|  | H |
SECTION H — ELECTRICITY

|  | H |
Note(s) These Notes cover the basic principles and general instructions for use of section H. Section H covers: basic electric elements, which cover all electric units and the general mechanical structure of apparatus and circuits, including the assembly of various basic elements into what are called printed circuits and also cover to a certain extent the manufacture of these elements (when not covered elsewhere); generation of electricity, which covers the generation, conversion and distribution of electricity together with the controlling of the corresponding gear; applied electricity, which covers: general utilisation techniques, viz. those of electric heating and electric lighting circuits; some special utilisation techniques, either electric or electronic in the strict sense, which are not covered by other sections of the Classification, including: electric light sources, including lasers; electric X-ray technique; electric plasma technique and the generation and acceleration of electrically charged particles or neutrons; basic electronic circuits and their control; radio or electric communication technique; the use of a specified material for the manufacture of the article or element described. In this connection, paragraphs 88 to 90 of the Guide should be referred to. In this section, the following general rules apply: Subject to the exceptions stated in I(c), above, any electric aspect or part peculiar to a particular operation, process, apparatus, object or article, classified in one of the sections of the Classification other than section H, is always classified in the subclass for that operation, process, apparatus, object or article. Where common characteristics concerning technical subjects of similar nature have been brought out at class level, the electric aspect or part is classified, in conjunction with the operation, process, apparatus, object or article, in a subclass which covers entirely the general electrical applications for the technical subject in question; The electrical applications referred to under (a), above, either general or particular, include: the therapeutic processes and apparatus, in class Fulltext... Hierarchy... Expanded...A61; the electric processes and apparatus used in various laboratory or industrial operations, in classes Fulltext... Hierarchy... Expanded...B01 and Fulltext... Hierarchy... Expanded...B03 and in subclass Fulltext... Hierarchy... Expanded...B23K; the electricity supply, electric propulsion and electric lighting of vehicles in general and of particular vehicles, in the subsection "Transporting" of section B; the electric ignition systems of internal-combustion engines, in subclass Fulltext... Hierarchy... Expanded...F02P, and of combustion apparatus in general, in subclass Fulltext... Hierarchy... Expanded...F23Q; the whole electrical part of section G, i.e. measuring devices including apparatus for measuring electric variables, checking, signalling and calculating. Electricity in that section is generally dealt with as a means and not as an end in itself; All electrical applications, both general and particular, presuppose that the "basic electricity" aspect appears in section H (see I(a) above) as regards the electric "basic elements" which they comprise. This rule is also valid for applied electricity, referred to in I(c), above, which appears in section H itself. In this section, the following special cases occur: Among the general applications covered by sections other than section H, it is worth noting that electric heating in general is covered by subclasses Fulltext... Hierarchy... Expanded...F24D or Fulltext... Hierarchy... Expanded...F24H or class Fulltext... Hierarchy... Expanded...F27, and that electric lighting in general is partly covered by class Fulltext... Hierarchy... Expanded...F21, since in section H (see I(c), above) there are places in Fulltext... Hierarchy... Expanded...H05B which cover the same technical subjects; In the two cases referred to under (a), above, the subclasses of section F, which deal with the respective subjects, essentially cover in the first place the whole mechanical aspect of the apparatus or devices, whereas the electrical aspect, as such, is covered by subclass Fulltext... Hierarchy... Expanded...H05B; In the case of lighting, this mechanical aspect should be taken to cover the material arrangement of the various electric elements, i.e., their geometrical or physical position in relation to one another; this aspect is covered by subclass Fulltext... Hierarchy... Expanded...F21V, the elements themselves and the primary circuits remaining in section H. The same applies to electric light sources, when combined with light sources of a different kind. These are covered by subclass Fulltext... Hierarchy... Expanded...H05B, whereas the physical arrangement which their combination constitutes is covered by the various subclasses of class Fulltext... Hierarchy... Expanded...F21; As regards heating, not only the electric elements and circuitry designs, as such, are covered by subclass Fulltext... Hierarchy... Expanded...H05B, but also the electric aspects of their arrangement, where these concern cases of general application; electric furnaces being considered as such. The physical disposition of the electric elements in furnaces is covered by section F. If a comparison is made with electric welding circuits, which are covered by subclass Fulltext... Hierarchy... Expanded...B23K in connection with welding, it can be seen that electric heating is not covered by the general rule stated in II, above.

|  | H04 |
ELECTRIC COMMUNICATION TECHNIQUE

|  | H04 |
Note(s) This class covers electrical communication systems with propagation paths employing beams of corpuscular radiation, acoustic waves or electromagnetic waves, e.g. radio or optical communication. [4]

|  | H04N |
PICTORIAL COMMUNICATION, e.g. TELEVISION (measuring, testing Fulltext... Hierarchy... Expanded...G01; systems for autographic writing, e.g. writing telegraphy, which involve following an outline Fulltext... Hierarchy... Expanded...G08; information storage based on relative movement between record carrier and transducer Fulltext... Hierarchy... Expanded...G11B; coding, decoding or code conversion, in general Fulltext... Hierarchy... Expanded...H03M; broadcast distribution or the recording of use made thereof Fulltext... Hierarchy... Expanded...H04H) [4]

|  | H04N |
Note(s) This subclass covers: transmission of pictures or their transient or permanent reproduction either locally or remotely, by methods involving both the following steps: step (a): the scanning of a picture, i.e. resolving the whole picture-containing area into individual picture-elements and the derivation of picture-representative electric signals related thereto, simultaneously or in sequence; step (b): the reproduction of the whole picture-containing area by the reproduction of individual picture-elements into which the picture is resolved by means of picture-representative electric signals derived therefrom, simultaneously or in sequence; [4] (in group Fulltext... Hierarchy... Expanded...H04N 1/00) systems for the transmission or the reproduction of arbitrarily composed pictures or patterns in which the local light variations composing a picture are not subject to variation with time, e.g. documents (both written and printed), maps, charts, photographs (other than cinematograph films); circuits specially designed for dealing with pictorial communication signals, e.g. television signals, as distinct from merely signals of a particular frequency range. This subclass does not cover: circuits or other parts of systems which form the subject of other subclasses, which are covered by the corresponding subclasses, e.g. Fulltext... Hierarchy... Expanded...H03C, Fulltext... Hierarchy... Expanded...H03F, Fulltext... Hierarchy... Expanded...H03J, Fulltext... Hierarchy... Expanded...H04B, Fulltext... Hierarchy... Expanded...H04H; systems in which legible alphanumeric or like character forms are analysed according to step (a) of Note (1) to derive an electric signal from which the character is recognised by comparison with stored information, which are covered by subclass Fulltext... Hierarchy... Expanded...G06K; systems for the direct photographic copying of an original picture in which an electric signal representative of the picture is derived according to the said step (a) and employed to modify the operation of the system, e.g. to control exposure, which are covered by class Fulltext... Hierarchy... Expanded...G03; systems for the reproduction according to step (b) of Note (1) of pictures comprising alphanumeric or like character forms but involving the production of the equivalent of a signal which would be derived according to the above-mentioned step (a), e.g. by cams, punched card or tape, coded control signal, or other means, which are covered by the subclass for the application, e.g. Fulltext... Hierarchy... Expanded...G01D, Fulltext... Hierarchy... Expanded...G06T, Fulltext... Hierarchy... Expanded...H04L; systems for the reproduction according to the above-mentioned step (b) of pictures comprising alphanumeric or like character forms and involving the generation according to the above-mentioned step (a) of picture-representative electric signals from a pre-arranged assembly of such characters, or records thereof, forming an integral part of the systems, which are covered by the subclass for the application, e.g. Fulltext... Hierarchy... Expanded...B41B, Fulltext... Hierarchy... Expanded...G06K, subject to those applications which are covered by this subclass; printing, duplication or marking processes, or materials therefor, which are covered by the relevant subclasses, e.g. Fulltext... Hierarchy... Expanded...B41C, Fulltext... Hierarchy... Expanded...B41J, Fulltext... Hierarchy... Expanded...B41M, Fulltext... Hierarchy... Expanded...G03C, Fulltext... Hierarchy... Expanded...G03F, Fulltext... Hierarchy... Expanded...G03G. [4] In this subclass, the following expression is used with the meaning indicated: "television systems" means those systems for the transmission and reproduction of arbitrarily composed pictures in which the local light variations composing a picture may change with time, e.g. natural "live" scenes, recordings of such scenes such as cinematograph films.

|  | H04N 1/00 - H04N 17/00 |
Note(s) In groups Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...H04N 1/00-H04N 17/00, it is desirable to add the indexing code of group Fulltext... Hierarchy... Expanded...H04N 101/00. [6]

P:0 |  | H04N 1/00 |
Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof [3,4]

|  | H04N 1/024 |
· | Details of scanning heads [3,4]

|  | H04N 1/028 |
· · | for picture-information pick-up [3,4]

|  | H04N 1/029 |
· · · | Heads optically focused on only one picture element at a time [6]

|  | H04N 1/03 |
· · · | with photodetectors arranged in a substantially linear array (scanning of linear arrays Fulltext... Hierarchy... Expanded...H04N 1/19) [6]

|  | H04N 1/031 |
· · · · | the photodetectors having a one-to-one and optically positive correspondence with the scanned picture elements, e.g. linear contact sensors [6]

|  | H04N 1/032 |
· · | for picture-information reproduction (engraving heads for the manufacture of printing formes Fulltext... Hierarchy... Expanded...B41C 1/02) [3,4]

|  | H04N 1/034 |
· · · | using ink, e.g. ink-jet heads [5]

|  | H04N 1/036 |
· · · | for optical reproduction [3,4]

|  | H04N 1/04 |
· | Scanning arrangements (Fulltext... Hierarchy... Expanded...H04N 1/387 takes precedence) [4]

|  | H04N 1/047 |
· · | Detection, control or error compensation of scanning velocity or position (Fulltext... Hierarchy... Expanded...H04N 1/17 takes precedence) [6]

|  | H04N 1/053 |
· · · | in main scanning direction, e.g. synchronisation of line start or picture elements in a line [6]

|  | H04N 1/06 |
· · | using cylindrical picture-bearing surfaces [4]

|  | H04N 1/08 |
· · · | Mechanisms for mounting or holding the sheet around the drum [4]

|  | H04N 1/10 |
· · | using flat picture-bearing surfaces [4]

|  | H04N 1/107 |
· · · | with manual scanning [6]

|  | H04N 1/113 |
· · | using oscillating or rotating mirrors [6]

|  | H04N 1/12 |
· · | using the sheet-feed movement as the slow scanning component (using multi-element arrays Fulltext... Hierarchy... Expanded...H04N 1/19) [4,6]

|  | H04N 1/14 |
· · · | using a rotating endless belt carrying the scanning heads [4]

|  | H04N 1/16 |
· · · | using a rotating helical element [4]

|  | H04N 1/17 |
· · | the scanning speed being dependent on content of picture [3,4]

|  | H04N 1/19 |
· · | using multi-element arrays [6]

|  | H04N 1/191 |
· · · | the array comprising a one-dimensional array [6]

|  | H04N 1/192 |
· · · · | Simultaneously scanning picture elements on one main scanning line [6]

|  | H04N 1/193 |
· · · · · | using electrically scanned linear arrays [6]

|  | H04N 1/195 |
· · · | the array comprising a two-dimensional array [6]

|  | H04N 1/203 |
· · | Simultaneous scanning of two or more separate pictures [6]

|  | H04N 1/207 |
· · | Simultaneous scanning of the original picture and the reproduced picture with a common scanning device [6]

|  | H04N 1/21 |
· | Intermediate information storage (Fulltext... Hierarchy... Expanded...H04N 1/387, Fulltext... Hierarchy... Expanded...H04N 1/41 take precedence; information storage in general Fulltext... Hierarchy... Expanded...G11) [4]

|  | H04N 1/23 |
· | Reproducing arrangements (details of scanning heads Fulltext... Hierarchy... Expanded...H04N 1/024; scanning arrangements therefor Fulltext... Hierarchy... Expanded...H04N 1/04) [4]

|  | H04N 1/27 |
· · | involving production of a magnetic intermediate picture [4]

|  | H04N 1/29 |
· · | involving production of an electrostatic intermediate picture [4]

|  | H04N 1/31 |
· · | Mechanical arrangements for picture transmission, e.g. adaptation of clutches, gearing, gear transmissions [4]

|  | H04N 1/32 |
· | Circuits or arrangements for control or supervision between transmitter and receiver

|  | H04N 1/327 |
· · | Initiating, continuing or ending a single-mode communication; Handshaking therefor [6]

|  | H04N 1/333 |
· · | Mode signalling or mode changing; Handshaking therefor [6]

|  | H04N 1/34 |
· · | for coin-freed systems

|  | H04N 1/36 |
· · | for synchronising or phasing transmitter and receiver

|  | H04N 1/38 |
· | Circuits or arrangements for blanking or otherwise eliminating unwanted parts of pictures (Fulltext... Hierarchy... Expanded...H04N 1/387 takes precedence) [4]

|  | H04N 1/387 |
· | Composing, repositioning or otherwise modifying originals (photoelectronic composing of characters Fulltext... Hierarchy... Expanded...B41B 19/00) [4]

|  | H04N 1/393 |
· · | Enlarging or reducing [4]

|  | H04N 1/40 |
· | Picture signal circuits (Fulltext... Hierarchy... Expanded...H04N 1/387 takes precedence) [4]

|  | H04N 1/401 |
· · | Compensating positionaly unequal response of the pick-up or reproducing head (Fulltext... Hierarchy... Expanded...H04N 1/403 takes precedence) [6]

|  | H04N 1/403 |
· · | Discrimination between the two tones in the picture signal of a two-tone original (shaping pulses by limiting or thresholding, in general Fulltext... Hierarchy... Expanded...H03K 5/08) [6]

|  | H04N 1/405 |
· · | Halftoning, i.e. converting the picture signal of a continuous-tone original into a corresponding signal showing only two levels [6]

|  | H04N 1/407 |
· · | Control or modification of tonal gradation or of extreme levels, e.g. background level [6]

|  | H04N 1/409 |
· · | Edge or detail enhancement; Noise or error suppression [6]

|  | H04N 1/41 |
· | Bandwidth or redundancy reduction (by scanning Fulltext... Hierarchy... Expanded...H04N 1/17) [3]

|  | H04N 1/411 |
· · | for the transmission or reproduction of two-tone pictures, e.g. black and white pictures [4]

|  | H04N 1/413 |
· · · | Systems or arrangements allowing the picture to be reproduced without loss or modification of picture-information [4]

|  | H04N 1/415 |
· · · · | in which the picture-elements are subdivided or grouped into fixed one-dimensional or two-dimensional blocks [4]

|  | H04N 1/417 |
· · · · | using predictive or differential encoding [4]

|  | H04N 1/419 |
· · · · | in which encoding of the length of a succession of picture-elements of the same value along a scanning line is the only encoding step [4]

|  | H04N 1/42 |
· | Systems for two-way working

|  | H04N 1/44 |
· | Secrecy systems

|  | H04N 1/46 |
· | Colour picture communication systems

|  | H04N 1/48 |
· · | Picture signal generators (for halftone screening Fulltext... Hierarchy... Expanded...H04N 1/52) [6]

|  | H04N 1/50 |
· · | Picture reproducers (for halftone screening Fulltext... Hierarchy... Expanded...H04N 1/52) [6]

|  | H04N 1/52 |
· · | Circuits or arrangements for halftone screening [6]

|  | H04N 1/54 |
· · | Conversion of colour picture signals to a plurality of signals some of which represent particular mixed colours, e.g. for textile printing [6]

|  | H04N 1/56 |
· · | Processing of colour picture signals (Fulltext... Hierarchy... Expanded...H04N 1/52 takes precedence) [6]

|  | H04N 1/58 |
· · · | Edge or detail enhancement; Noise or error suppression, e.g. colour misregistration correction (Fulltext... Hierarchy... Expanded...H04N 1/62 takes precedence) [6]

|  | H04N 1/60 |
· · · | Colour correction or control [6]

|  | H04N 1/62 |
· · · · | Retouching, i.e. modification of isolated colours only or in isolated picture areas only [6]

|  | H04N 1/64 |
· · | Systems for the transmission or the storage of the colour picture signal; Details therefor, e.g. coding or decoding means therefor [6]

P:70 |  | H04N 3/00 |
Scanning details of television systems; Combination thereof with generation of supply voltages [4]

|  | H04N 3/02 |
· | by optical-mechanical means only (Fulltext... Hierarchy... Expanded...H04N 3/36 takes precedence; optical scanning systems in general Fulltext... Hierarchy... Expanded...G02B 26/10) [2]

|  | H04N 3/04 |
· · | having a moving aperture

|  | H04N 3/06 |
· · | having a moving lens or other refractor

|  | H04N 3/08 |
· · | having a moving reflector

|  | H04N 3/09 |
· · · | for electromagnetic radiation in the invisible region, e.g. infra-red [4]

|  | H04N 3/10 |
· | by means not exclusively optical-mechanical (Fulltext... Hierarchy... Expanded...H04N 3/36 takes precedence; devices or arrangements for the electro-, magneto- or acousto-optical modulation or deflection of light beams Fulltext... Hierarchy... Expanded...G02F) [2]

|  | H04N 3/12 |
· · | by switched stationary formation of lamps, photocells, or light relays

|  | H04N 3/14 |
· · | by means of electrically scanned solid-state devices

|  | H04N 3/15 |
· · · | for picture signal generation [3]

|  | H04N 3/16 |
· · | by deflecting electron beam in cathode-ray tube (producing sawtooth waveforms Fulltext... Hierarchy... Expanded...H03K 4/00)

|  | H04N 3/18 |
· · · | Generation of supply voltages, in combination with electron beam deflecting [4]

|  | H04N 3/185 |
· · · · | Maintaining dc voltage constant (regulation of dc voltage in general Fulltext... Hierarchy... Expanded...G05F) [4]

|  | H04N 3/19 |
· · · · | Arrangements or assemblies in supply circuits for the purpose of withstanding high voltages [3]

|  | H04N 3/20 |
· · · | Prevention of damage to cathode-ray tubes in event of failure of scanning

|  | H04N 3/22 |
· · · | Circuits for controlling dimensions, shape or centering of picture on screen

|  | H04N 3/223 |
· · · · | Controlling dimensions (by maintaining the cathode-ray tube high voltage constant Fulltext... Hierarchy... Expanded...H04N 3/185) [4]

|  | H04N 3/227 |
· · · · | Centering [4]

|  | H04N 3/23 |
· · · · | Distortion correction, e.g. for pincushion distortion correction, S-correction [4]

|  | H04N 3/233 |
· · · · · | using active elements [4]

|  | H04N 3/237 |
· · · · · | using passive elements [4]

|  | H04N 3/24 |
· · · | Blanking circuits

|  | H04N 3/26 |
· · · | Modifications of scanning arrangements to improve focusing (focusing circuits in general Fulltext... Hierarchy... Expanded...H01J)

|  | H04N 3/27 |
· · · | Circuits special to multi-standard receivers (circuitry of multi-standard receivers in general Fulltext... Hierarchy... Expanded...H04N 5/46) [3,4]

|  | H04N 3/28 |
· · | producing multiple scanning, i.e. using more than one spot at the same time

|  | H04N 3/30 |
· · | otherwise than with constant velocity or otherwise than in pattern formed by unidirectional, straight, substantially horizontal or vertical lines

|  | H04N 3/32 |
· · · | Velocity varied in dependence upon picture information

|  | H04N 3/34 |
· · · | Elemental scanning area oscillated rapidly in direction transverse to main scanning direction

|  | H04N 3/36 |
· | Scanning of motion picture films, e.g. for telecine [2]

|  | H04N 3/38 |
· · | with continuously moving film [4]

|  | H04N 3/40 |
· · | with intermittently moving film [4]

P:80 |  | H04N 5/00 |
Details of television systems (scanning details or combination thereof with generation of supply voltages Fulltext... Hierarchy... Expanded...H04N 3/00; specially adapted for colour television Fulltext... Hierarchy... Expanded...H04N 9/00) [4]

|  | H04N 5/04 |
· | Synchronising (for television systems using pulse code modulation Fulltext... Hierarchy... Expanded...H04N 7/24; in general Fulltext... Hierarchy... Expanded...H03L 7/00) [4]

|  | H04N 5/05 |
· · | Synchronising circuits with arrangements for extending range of synchronisation, e.g. by using switching between several time constants [2]

|  | H04N 5/06 |
· · | Generation of synchronising signals

|  | H04N 5/067 |
· · · | Arrangements or circuits at the transmitter end [4]

|  | H04N 5/073 |
· · · · | for mutually locking plural sources of synchronising signals, e.g. studios or relay stations [4]

|  | H04N 5/08 |
· · | Separation of synchronising signals from picture signals

|  | H04N 5/10 |
· · · | Separation of line synchronising signal from frame synchronising signal

|  | H04N 5/12 |
· · | Devices in which the synchronising signals are only operative if a phase difference occurs between synchronising and synchronised scanning devices, e.g. flywheel synchronising [2]

|  | H04N 5/14 |
· | Picture signal circuitry for video frequency region (Fulltext... Hierarchy... Expanded...H04N 5/222 takes precedence) [2]

|  | H04N 5/16 |
· · | Circuitry for reinsertion of dc and slowly varying components of signal; Circuitry for preservation of black or white level

|  | H04N 5/18 |
· · · | by means of "clamp" circuit operated by switching circuit

|  | H04N 5/20 |
· · | Circuitry for controlling amplitude response

|  | H04N 5/202 |
· · · | Gamma control [4]

|  | H04N 5/205 |
· · · | for correcting amplitude versus frequency characteristic [4]

|  | H04N 5/208 |
· · · · | for compensating for attenuation of high frequency components, e.g. crispening, aperture distortion correction [4]

|  | H04N 5/21 |
· · | Circuitry for suppressing or minimising disturbance, e.g. moire, halo (suppression of noise in television recording Fulltext... Hierarchy... Expanded...H04N 5/911)

|  | H04N 5/213 |
· · · | Circuitry for suppressing or minimising impulsive noise (Fulltext... Hierarchy... Expanded...H04N 5/217 takes precedence) [4]

|  | H04N 5/217 |
· · · | in picture signal generation [4]

|  | H04N 5/222 |
· | Studio circuitry; Studio devices; Studio equipment [4]

|  | H04N 5/225 |
· · | Television cameras [4]

|  | H04N 5/228 |
· · · | Circuit details for pick-up tubes [4]

|  | H04N 5/232 |
· · · | Devices for controlling television cameras, e.g. remote control (Fulltext... Hierarchy... Expanded...H04N 5/235 takes precedence; control of exposure in cameras by setting shutters, diaphragms or filters separately or conjointly Fulltext... Hierarchy... Expanded...G03B 7/00; focusing for cameras Fulltext... Hierarchy... Expanded...G03B 13/00; varying magnification for cameras Fulltext... Hierarchy... Expanded...G03B 17/00) [4]

|  | H04N 5/235 |
· · · | Circuitry for compensating for variation in the brightness of the object [4]

|  | H04N 5/238 |
· · · · | by influencing optical part of the camera [4]

|  | H04N 5/243 |
· · · · | by influencing the picture signal [4]

|  | H04N 5/247 |
· · · | Arrangement of television cameras [4]

|  | H04N 5/253 |
· · | Picture signal generating by scanning motion picture films or slide opaques, e.g. for telecine (scanning details therefor Fulltext... Hierarchy... Expanded...H04N 3/36) [4]

|  | H04N 5/257 |
· · | Picture signal generators using flying-spot scanners (Fulltext... Hierarchy... Expanded...H04N 5/253 takes precedence) [4]

|  | H04N 5/262 |
· · | Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects [4]

|  | H04N 5/265 |
· · · | Mixing [4]

|  | H04N 5/268 |
· · · | Signal distribution or switching (for broadcasting Fulltext... Hierarchy... Expanded...H04H 20/00) [4]

|  | H04N 5/272 |
· · · | Means for inserting a foreground image in a background image, i.e. inlay, outlay [4]

|  | H04N 5/275 |
· · · · | Generation of keying signals [4]

|  | H04N 5/278 |
· · · | Subtitling [4]

|  | H04N 5/28 |
· · | Mobile studios

|  | H04N 5/30 |
· | Transforming light or analogous information into electric information (Fulltext... Hierarchy... Expanded...H04N 5/222 takes precedence; scanning details Fulltext... Hierarchy... Expanded...H04N 3/00; transforming acoustic waves into electric information Fulltext... Hierarchy... Expanded...G01S 7/52, Fulltext... Hierarchy... Expanded...G01S 15/89; light transforming elements Fulltext... Hierarchy... Expanded...H01J, Fulltext... Hierarchy... Expanded...H01L) [2,4,7]

|  | H04N 5/32 |
· · | Transforming X-rays

|  | H04N 5/321 |
· · · | with video transmission of fluoroscopic images [5]

|  | H04N 5/325 |
· · · · | Image enhancement, e.g. by subtraction techniques using polyenergetic X-rays [5]

|  | H04N 5/33 |
· · | Transforming infra-red radiation [2]

|  | H04N 5/335 |
· · | using electrically scanned solid-state devices (Fulltext... Hierarchy... Expanded...H04N 5/32, Fulltext... Hierarchy... Expanded...H04N 5/33 take precedence) [4]

|  | H04N 5/38 |
· | Transmitter circuitry (Fulltext... Hierarchy... Expanded...H04N 5/14 takes precedence) [4]

|  | H04N 5/40 |
· · | Modulation circuits

|  | H04N 5/42 |
· · | for transmitting at will black-and-white or colour signals

|  | H04N 5/44 |
· | Receiver circuitry (Fulltext... Hierarchy... Expanded...H04N 5/14 takes precedence) [4]

|  | H04N 5/445 |
· · | for displaying additional information (Fulltext... Hierarchy... Expanded...H04N 5/50 takes precedence) [4]

|  | H04N 5/45 |
· · · | Picture in picture [4]

|  | H04N 5/455 |
· · | Demodulation-circuits (demodulation in general Fulltext... Hierarchy... Expanded...H03D) [4]

|  | H04N 5/46 |
· · | for receiving on more than one standard at will (deflecting circuits of multi-standard receivers Fulltext... Hierarchy... Expanded...H04N 3/27) [4]

|  | H04N 5/50 |
· · | Tuning indicators; Automatic tuning control (tuning control in general Fulltext... Hierarchy... Expanded...H03J) [4]

|  | H04N 5/52 |
· · | Automatic gain control [4]

|  | H04N 5/53 |
· · · | Keyed automatic gain control [4]

|  | H04N 5/54 |
· · · | for positively-modulated picture signals (Fulltext... Hierarchy... Expanded...H04N 5/53 takes precedence) [4]

|  | H04N 5/56 |
· · · | for negatively-modulated picture signals (Fulltext... Hierarchy... Expanded...H04N 5/53 takes precedence) [4]

|  | H04N 5/57 |
· · | Control of contrast or brightness [4]

|  | H04N 5/58 |
· · · | in dependence upon ambient light [4]

|  | H04N 5/59 |
· · · | in dependence upon beam current of cathode ray tube [4]

|  | H04N 5/60 |
· · | for the sound signals

|  | H04N 5/62 |
· · · | Intercarrier circuits, i.e. heterodyning sound and vision carriers

|  | H04N 5/63 |
· | Generation or supply of power specially adapted for television receivers (generation of supply voltages in combination with electron beam deflecting Fulltext... Hierarchy... Expanded...H04N 3/18; regulating of voltage or current in general Fulltext... Hierarchy... Expanded...G05F; transformers Fulltext... Hierarchy... Expanded...H01F; supplying or distributing electric power, in general Fulltext... Hierarchy... Expanded...H02J; static converters Fulltext... Hierarchy... Expanded...H02M) [4]

|  | H04N 5/64 |
· | Constructional details of receivers, e.g. cabinets, dust covers (furniture aspects Fulltext... Hierarchy... Expanded...A47B, e.g. Fulltext... Hierarchy... Expanded...A47B 81/06) [2]

|  | H04N 5/645 |
· · | Mounting of picture tube on chassis or in housing

|  | H04N 5/65 |
· · | Holding-devices for protective discs or for picture masks

|  | H04N 5/655 |
· · | Construction or mounting of chassis, e.g. for varying the elevation of the tube

|  | H04N 5/66 |
· | Transforming electric information into light information (scanning details Fulltext... Hierarchy... Expanded...H04N 3/00)

|  | H04N 5/68 |
· · | Circuit details for cathode-ray display tubes

|  | H04N 5/70 |
· · | Circuit details for electroluminescent devices

|  | H04N 5/72 |
· | Modifying the appearance of television pictures by optical filters or diffusing screens (optical filters or diffusing screens per se Fulltext... Hierarchy... Expanded...G02B 5/00)

|  | H04N 5/74 |
· | Projection arrangements for image reproduction, e.g. using eidophor (optical systems in general Fulltext... Hierarchy... Expanded...G02B)

|  | H04N 5/76 |
· | Television signal recording (diagnosis, testing or measuring of television signal recorders Fulltext... Hierarchy... Expanded...H04N 17/06; recording in connection with measuring Fulltext... Hierarchy... Expanded...G01D; information storage in general Fulltext... Hierarchy... Expanded...G11, e.g. Fulltext... Hierarchy... Expanded...G11B) [3,4]

|  | H04N 5/761 |
· · | Systems for programming the time at which predetermined television channels will be selected for recording [7]

|  | H04N 5/7613 |
· · · | by using data entered by the user and a reference timing clock incorporated in the recorder [7]

|  | H04N 5/7617 |
· · · | by using data entered by the user and reference data transmitted by the broadcasting station [7]

|  | H04N 5/765 |
· · | Interface circuits between an apparatus for recording and another apparatus (associated working of recording or reproducing apparatus with a television camera or receiver in which the television signal is not significantly involved Fulltext... Hierarchy... Expanded...G11B 31/00) [6]

|  | H04N 5/77 |
· · · | between a recording apparatus and a television camera [6]

|  | H04N 5/775 |
· · · | between a recording apparatus and a television receiver [6]

|  | H04N 5/78 |
· · | using magnetic recording (Fulltext... Hierarchy... Expanded...H04N 5/91 takes precedence) [3]

|  | H04N 5/781 |
· · · | on discs or drums [3]

|  | H04N 5/782 |
· · · | on tape [3]

|  | H04N 5/7822 |
· · · · | with stationary magnetic heads [6]

|  | H04N 5/7824 |
· · · · | with rotating magnetic heads [6]

|  | H04N 5/7826 |
· · · · · | involving helical scanning of the magnetic tape [6]

|  | H04N 5/7828 |
· · · · · | involving transversal scanning of the magnetic tape [6]

|  | H04N 5/783 |
· · · · | Adaptations for reproducing at a rate different from the recording rate [3]

|  | H04N 5/784 |
· · · | on a sheet [6]

|  | H04N 5/80 |
· · | using electrostatic recording (Fulltext... Hierarchy... Expanded...H04N 5/91 takes precedence) [3]

|  | H04N 5/82 |
· · · | using deformable thermoplastic recording medium

|  | H04N 5/83 |
· · · · | on discs or drums [3]

|  | H04N 5/84 |
· · | using optical recording (Fulltext... Hierarchy... Expanded...H04N 5/80, Fulltext... Hierarchy... Expanded...H04N 5/89, Fulltext... Hierarchy... Expanded...H04N 5/91 take precedence) [3,4]

|  | H04N 5/85 |
· · · | on discs or drums [3]

|  | H04N 5/87 |
· · · | Producing a motion picture film from a television signal (scanning of motion picture films for television signal generation Fulltext... Hierarchy... Expanded...H04N 3/36; television signal generation by scanning a motion picture film Fulltext... Hierarchy... Expanded...H04N 5/253, Fulltext... Hierarchy... Expanded...H04N 9/11) [3,4]

|  | H04N 5/89 |
· · | using holographic recording (Fulltext... Hierarchy... Expanded...H04N 5/91 take precedence) [3]

|  | H04N 5/90 |
· · · | on discs or drums [3]

|  | H04N 5/903 |
· · | using variable electrical capacitive recording (Fulltext... Hierarchy... Expanded...H04N 5/91 takes precedence) [4]

|  | H04N 5/907 |
· · | using static stores, e.g. storage tubes, semiconductor memories (Fulltext... Hierarchy... Expanded...H04N 5/91 takes precedence; based on relative movement between record carrier and transducer Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...H04N 5/78-H04N 5/903) [4]

|  | H04N 5/91 |
· · | Television signal processing therefor (of colour signals Fulltext... Hierarchy... Expanded...H04N 9/79) [3]

|  | H04N 5/911 |
· · · | for the suppression of noise [6]

|  | H04N 5/913 |
· · · | for scrambling (scrambling of a television signal for transmission Fulltext... Hierarchy... Expanded...H04N 7/167) [6]

|  | H04N 5/915 |
· · · | for field- or frame-skip recording or reproducing [6]

|  | H04N 5/917 |
· · · | for bandwidth reduction (bandwidth reduction Fulltext... Hierarchy... Expanded...H04N 7/12; using pulse code modulation Fulltext... Hierarchy... Expanded...H04N 7/24) [6]

|  | H04N 5/919 |
· · · · | by dividing samples or signal segments, e.g. television lines, among a plurality of recording channels [6]

|  | H04N 5/92 |
· · · | Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback [3]

|  | H04N 5/921 |
· · · · | by recording or reproducing the baseband signal [6]

|  | H04N 5/922 |
· · · · | by modulation of the signal on a carrier wave, e.g. amplitude or frequency modulation [6]

|  | H04N 5/923 |
· · · · | using preemphasis of the signal before modulation and deemphasis of the signal after demodulation [6]

|  | H04N 5/924 |
· · · · | using duty cycle modulation [6]

|  | H04N 5/926 |
· · · · | by pulse code modulation (Fulltext... Hierarchy... Expanded...H04N 5/919 takes precedence) [6]

|  | H04N 5/928 |
· · · · | the sound signal being pulse code modulated and recorded in time division multiplex with the modulated video signal [6]

|  | H04N 5/93 |
· · · | Regeneration of the television signal or of selected parts thereof [3]

|  | H04N 5/931 |
· · · · | for restoring the level of the reproduced signal [6]

|  | H04N 5/932 |
· · · · | Regeneration of analogue synchronisation signals [6]

|  | H04N 5/935 |
· · · · | Regeneration of digital synchronisation signals [6]

|  | H04N 5/937 |
· · · · | by assembling picture element blocks in an intermediate store [6]

|  | H04N 5/94 |
· · · · | Signal drop-out compensation [3]

|  | H04N 5/945 |
· · · · · | for signals recorded by pulse code modulation (error detection or correction of digital signals for recording in general Fulltext... Hierarchy... Expanded...G11B 20/18) [6]

|  | H04N 5/95 |
· · · · | Time-base error compensation [3]

|  | H04N 5/953 |
· · · · · | by using an analogue memory, e.g. a CCD-shift register, the delay of which is controlled by a voltage controlled oscillator [6]

|  | H04N 5/956 |
· · · · · | by using a digital memory with independent write-in and read-out clock generators [6]

P:60 |  | H04N 7/00 |
Television systems (details Fulltext... Hierarchy... Expanded...H04N 3/00, Fulltext... Hierarchy... Expanded...H04N 5/00; specially adapted for colour television Fulltext... Hierarchy... Expanded...H04N 11/00; stereoscopic television systems Fulltext... Hierarchy... Expanded...H04N 13/00) [4]

|  | H04N 7/01 |
· | Conversion of standards [4]

|  | H04N 7/015 |
· | High-definition television systems [6]

|  | H04N 7/025 |
· | Systems for transmission of digital non-picture data, e.g. of text during the active part of a television frame [6]

|  | H04N 7/03 |
· · | Subscription systems therefor [6]

|  | H04N 7/035 |
· · | Circuits for the digital non-picture data signal, e.g. for slicing of the data signal, for regeneration of the data-clock signal, for error detection or correction of the data signal [6]

|  | H04N 7/04 |
· | Systems for the transmission of one television signal, i.e. both picture and sound, by a single carrier [4]

|  | H04N 7/045 |
· · | the carrier being frequency modulated [6]

|  | H04N 7/06 |
· | Systems for the simultaneous transmission of one television signal, i.e. both picture and sound, by more than one carrier [4]

|  | H04N 7/08 |
· | Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band [4,6]

|  | H04N 7/081 |
· · | the additional information signals being transmitted by means of a subcarrier [6]

|  | H04N 7/083 |
· · | with signal insertion during the vertical and the horizontal blanking interval [6]

|  | H04N 7/084 |
· · | with signal insertion during the horizontal blanking interval [6]

|  | H04N 7/085 |
· · · | the inserted signal being digital [6]

|  | H04N 7/087 |
· · | with signal insertion during the vertical blanking interval [4]

|  | H04N 7/088 |
· · · | the inserted signal being digital [6]

|  | H04N 7/10 |
· | Adaptations for transmission by electrical cable (Fulltext... Hierarchy... Expanded...H04N 7/12 takes precedence) [4]

|  | H04N 7/12 |
· | Systems in which the television signal is transmitted via one channel or a plurality of parallel channels, the bandwidth of each channel being less than the bandwidth of the television signal (Fulltext... Hierarchy... Expanded...H04N 7/24 takes precedence; high-definition television systems Fulltext... Hierarchy... Expanded...H04N 7/015) [4]

|  | H04N 7/14 |
· | Systems for two-way working (Fulltext... Hierarchy... Expanded...H04N 7/173 takes precedence) [4]

|  | H04N 7/15 |
· · | Conference systems (telephonic conference arrangements Fulltext... Hierarchy... Expanded...H04M 3/56) [5]

|  | H04N 7/16 |
· | Secrecy systems; Subscription systems

|  | H04N 7/167 |
· · | Systems rendering the television signal unintelligible and subsequently intelligible [4]

|  | H04N 7/169 |
· · · | Systems operating in the time domain of the television signal [6]

|  | H04N 7/171 |
· · · | Systems operating in the amplitude domain of the television signal [6]

|  | H04N 7/173 |
· · | with two-way working, e.g. subscriber sending a programme selection signal [4]

|  | H04N 7/18 |
· | Closed-circuit television systems, i.e. systems in which the signal is not broadcast

|  | H04N 7/20 |
· | Adaptations for transmission via a GHz frequency band, e.g. via satellite [4]

|  | H04N 7/22 |
· | Adaptations for optical transmission [4]

|  | H04N 7/24 |
· | Systems for the transmission of television signals using pulse code modulation [6]

|  | H04N 7/26 |
· · | using bandwidth reduction (information reduction by code conversion in general Fulltext... Hierarchy... Expanded...H03M 7/30) [6]

|  | H04N 7/28 |
· · · | using vector coding [6]

|  | H04N 7/30 |
· · · | involving transform coding (Fulltext... Hierarchy... Expanded...H04N 7/50 takes precedence; digital computers for performing complex mathematical operations, e.g. domain transformation, Fulltext... Hierarchy... Expanded...G06F 17/14) [6]

|  | H04N 7/32 |
· · · | involving predictive coding (Fulltext... Hierarchy... Expanded...H04N 7/48, Fulltext... Hierarchy... Expanded...H04N 7/50 take precedence) [6]

|  | H04N 7/34 |
· · · · | using spatial prediction [6]

|  | H04N 7/36 |
· · · · | using temporal prediction [6]

|  | H04N 7/38 |
· · · · | involving delta modulation (systems using differential pulse code modulation in general Fulltext... Hierarchy... Expanded...H04B 14/06) [6]

|  | H04N 7/40 |
· · · · · | adaptive [6]

|  | H04N 7/42 |
· · · · | involving differential modulation (systems using differential pulse code modulation in general Fulltext... Hierarchy... Expanded...H04B 14/06) [6]

|  | H04N 7/44 |
· · · · · | adaptive [6]

|  | H04N 7/46 |
· · · · | using subsampling at the coder and sample restitution by interpolation at the coder or decoder [6]

|  | H04N 7/48 |
· · · | involving pulse code modulation and predictive coding [6]

|  | H04N 7/50 |
· · · | involving transform and predictive coding [6]

|  | H04N 7/52 |
· · | Systems for transmission of a pulse code modulated video signal with one or more other pulse code modulated signals, e.g. an audio signal, a synchronising signal [6]

|  | H04N 7/54 |
· · · | the signals being synchronous [6]

|  | H04N 7/56 |
· · · · | Synchronising systems therefor [6]

|  | H04N 7/58 |
· · · | involving more than one video signal [6]

|  | H04N 7/60 |
· · · | the signals being asynchronous [6]

|  | H04N 7/62 |
· · · · | Synchronising systems therefor [6]

|  | H04N 7/64 |
· · | Systems for detection or correction of transmission errors (coding, decoding or code conversion for error detection or error correction in general Fulltext... Hierarchy... Expanded...H03M 13/00) [6]

|  | H04N 7/66 |
· · · | using redundant codes [6]

|  | H04N 7/68 |
· · · | using error concealment [6]

P:50 |  | H04N 9/00 |
Details of colour television systems [4]

|  | H04N 9/04 |
· | Picture signal generators [4]

|  | H04N 9/07 |
· · | with one pick-up device only [2,4]

|  | H04N 9/077 |
· · · | whereby the colour signals are characterised by their phase [4]

|  | H04N 9/083 |
· · · | whereby the colour signals are characterised by their frequency [4]

|  | H04N 9/09 |
· · | with more than one pick-up device [4]

|  | H04N 9/093 |
· · · | Systems for avoiding or correcting misregistration of video signals [4]

|  | H04N 9/097 |
· · · | Optical arrangements associated therewith, e.g. for beam-splitting, for colour correction (beam-splitting in general Fulltext... Hierarchy... Expanded...G02B 27/10) [4]

|  | H04N 9/10 |
· · | using optical-mechanical scanning means only (Fulltext... Hierarchy... Expanded...H04N 9/11 takes precedence; optical scanning systems in general Fulltext... Hierarchy... Expanded...G02B 26/10) [2,4]

|  | H04N 9/11 |
· · | Scanning of colour motion picture films, e.g. for telecine [2,4]

|  | H04N 9/12 |
· | Picture reproducers (Fulltext... Hierarchy... Expanded...H04N 9/11 takes precedence; devices or arrangements for the electro-, magneto- or acousto-optical modulation or deflection of light beams Fulltext... Hierarchy... Expanded...G02F) [2,4]

|  | H04N 9/14 |
· · | using optical-mechanical scanning means only (optical scanning systems in general Fulltext... Hierarchy... Expanded...G02B 26/10) [2,4]

|  | H04N 9/16 |
· · | using cathode ray tubes (Fulltext... Hierarchy... Expanded...H04N 9/11 takes precedence; cathode-ray tubes Fulltext... Hierarchy... Expanded...H01J 31/00) [2,4]

|  | H04N 9/18 |
· · · | using separate electron beams for the primary colour signals (Fulltext... Hierarchy... Expanded...H04N 9/27 takes precedence) [2,4]

|  | H04N 9/20 |
· · · · | with more than one beam in a tube [4]

|  | H04N 9/22 |
· · · | using the same beam for more than one primary colour information (Fulltext... Hierarchy... Expanded...H04N 9/27 takes precedence) [2,4]

|  | H04N 9/24 |
· · · · | using means, integral with, or external to, the tube, for producing signal indicating instantaneous beam position [4]

|  | H04N 9/26 |
· · · · | using electron-optical colour selection means, e.g. line grid, deflection means in or near the gun or near the phosphor screen [4]

|  | H04N 9/27 |
· · · | with variable depth of penetration of electron beam into the luminescent layer, e.g. penetrons [2,4]

|  | H04N 9/28 |
· · · | Arrangements for convergence or focusing [4]

|  | H04N 9/285 |
· · · · | using quadrupole lenses (quadrupole lenses per se Fulltext... Hierarchy... Expanded...G21K 1/08, Fulltext... Hierarchy... Expanded...H01J 3/14, Fulltext... Hierarchy... Expanded...H01J 29/58, Fulltext... Hierarchy... Expanded...H01J 37/10) [4]

|  | H04N 9/29 |
· · · | using demagnetisation or compensation of external magnetic fields [2,4]

|  | H04N 9/30 |
· · | using solid-state colour display devices [4]

|  | H04N 9/31 |
· · | Projection devices for colour picture display [2,4]

|  | H04N 9/43 |
· | Conversion of monochrome picture signals to colour picture signals for colour picture display [4]

|  | H04N 9/44 |
· | Colour synchronisation [4]

|  | H04N 9/45 |
· · | Generation or recovery of colour sub-carriers [4]

|  | H04N 9/455 |
· · | Generation of colour burst signals; Insertion of colour burst signals in colour picture signals or separation of colour burst signals from colour picture signals (Fulltext... Hierarchy... Expanded...H04N 9/45 takes precedence) [4]

|  | H04N 9/465 |
· · | Synchronisation of the PAL-switch [4]

|  | H04N 9/47 |
· · | for sequential signals [2,4]

|  | H04N 9/475 |
· · | for mutually locking different synchronisation sources [4]

|  | H04N 9/64 |
· | Circuits for processing colour signals (Fulltext... Hierarchy... Expanded...H04N 9/77 takes precedence) [4]

|  | H04N 9/65 |
· · | for synchronous modulators [4]

|  | H04N 9/66 |
· · | for synchronous demodulators [4]

|  | H04N 9/67 |
· · | for matrixing [4]

|  | H04N 9/68 |
· · | for controlling the amplitude of colour signals, e.g. automatic chroma control circuits (Fulltext... Hierarchy... Expanded...H04N 9/71, Fulltext... Hierarchy... Expanded...H04N 9/73 take precedence) [4]

|  | H04N 9/69 |
· · · | for modifying the colour signals by gamma correction [4]

|  | H04N 9/70 |
· · | for colour killing [4]

|  | H04N 9/71 |
· · · | combined with colour gain control [4]

|  | H04N 9/72 |
· · | for reinsertion of dc and slowly varying components of colour signals [4]

|  | H04N 9/73 |
· · | colour balance circuits, e.g. white balance circuits, colour temperature control [4]

|  | H04N 9/74 |
· · | for obtaining special effects (Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...H04N 9/65-H04N 9/73 take precedence) [4]

|  | H04N 9/75 |
· · · | Chroma key [4]

|  | H04N 9/76 |
· · · | for mixing of colour signals (Fulltext... Hierarchy... Expanded...H04N 9/75 takes precedence) [4]

|  | H04N 9/77 |
· | Circuits for processing the brightness signal and the chrominance signal relative to each other, e.g. adjusting the phase of the brightness signal relative to the colour signal, correcting differential gain or differential phase (circuits for matrixing Fulltext... Hierarchy... Expanded...H04N 9/67) [4]

|  | H04N 9/78 |
· · | for separating the brightness signal or the chrominance signal from the colour television signal, e.g. using comb filter [4]

|  | H04N 9/79 |
· | Processing of colour television signals in connection with recording [4]

|  | H04N 9/793 |
· · | for controlling the level of the chrominance signal, e.g. by means of automatic chroma control circuits [6]

|  | H04N 9/797 |
· · | for recording the signal in a plurality of channels, the bandwidth of each channel being less than the bandwidth of the signal (Fulltext... Hierarchy... Expanded...H04N 9/804, Fulltext... Hierarchy... Expanded...H04N 9/81, Fulltext... Hierarchy... Expanded...H04N 9/82 take precedence) [6]

|  | H04N 9/80 |
· · | Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback [4]

|  | H04N 9/802 |
· · · | involving processing of the sound signal (Fulltext... Hierarchy... Expanded...H04N 9/806, Fulltext... Hierarchy... Expanded...H04N 9/835 take precedence) [6]

|  | H04N 9/804 |
· · · | involving pulse code modulation of the colour picture signal components [6]

|  | H04N 9/806 |
· · · · | with processing of the sound signal [6]

|  | H04N 9/808 |
· · · | involving pulse code modulation of the composite colour video-signal [6]

|  | H04N 9/81 |
· · · | the individual colour picture signal components being recorded sequentially only [4]

|  | H04N 9/815 |
· · · · | the luminance signal and the sequential colour component signals being recorded in separate recording channels [6]

|  | H04N 9/82 |
· · · | the individual colour picture signal components being recorded simultaneously only [4]

|  | H04N 9/825 |
· · · · | the luminance and chrominance signals being recorded in separate channels [6]

|  | H04N 9/83 |
· · · · | the recorded chrominance signal occupying a frequency band under the frequency band of the recorded brightness signal [4]

|  | H04N 9/835 |
· · · · · | involving processing of the sound signal [6]

|  | H04N 9/84 |
· · · · · | the recorded signal showing a feature, which is different in adjacent track parts, e.g. different phase or frequency [4]

|  | H04N 9/85 |
· · · · | the recorded brightness signal occupying a frequency band totally overlapping the frequency band of the recorded chrominance signal, e.g. frequency interleaving [4]

|  | H04N 9/86 |
· · · | the individual colour picture signal components being recorded sequentially and simultaneously, e.g. corresponding to SECAM-system [4]

|  | H04N 9/87 |
· · | Regeneration of colour television signals (Fulltext... Hierarchy... Expanded...H04N 9/80 takes precedence) [4]

|  | H04N 9/873 |
· · · | for restoring the colour component sequence of the reproduced signal [6]

|  | H04N 9/877 |
· · · | by assembling picture element blocks in an intermediate memory [6]

|  | H04N 9/88 |
· · · | Signal drop-out compensation [4]

|  | H04N 9/882 |
· · · · | the signal being a composite colour television signal [6]

|  | H04N 9/885 |
· · · · · | using a digital intermediate memory [6]

|  | H04N 9/888 |
· · · · | for signals recorded by pulse code modulation (error detection or correction of digital signals for recording in general Fulltext... Hierarchy... Expanded...G11B 20/18) [6]

|  | H04N 9/89 |
· · · | Time-base error compensation [4]

|  | H04N 9/893 |
· · · · | using an analogue memory, e.g. a CCD-shift register, the delay of which is controlled by a voltage controlled oscillator [6]

|  | H04N 9/896 |
· · · · | using a digital memory with independent write-in and read-out clock generators [6]

|  | H04N 9/898 |
· · · | using frequency multiplication of the reproduced colour signal with another auxiliary reproduced signal, e.g. a pilot signal carrier [6]

P:40 |  | H04N 11/00 |
Colour television systems (details Fulltext... Hierarchy... Expanded...H04N 9/00; stereoscopic Fulltext... Hierarchy... Expanded...H04N 15/00) [4]

|  | H04N 11/02 |
· | with bandwidth reduction (Fulltext... Hierarchy... Expanded...H04N 11/04 takes precedence) [4]

|  | H04N 11/04 |
· | using pulse code modulation [4]

|  | H04N 11/06 |
· | Transmission systems characterised by the manner in which the individual colour picture signal components are combined [4]

|  | H04N 11/08 |
· · | using sequential signals only (dot sequential systems Fulltext... Hierarchy... Expanded...H04N 11/12) [4]

|  | H04N 11/10 |
· · · | in which colour signals are inserted in the blanking interval of brightness signal [4]

|  | H04N 11/12 |
· · | using simultaneous signals only [4]

|  | H04N 11/14 |
· · · | in which one signal, modulated in phase and amplitude, conveys colour information and a second signal conveys brightness information, e.g. NTSC-system [4]

|  | H04N 11/16 |
· · · · | the chrominance signal alternating in phase, e.g. PAL-system [4]

|  | H04N 11/18 |
· · | using simultaneous and sequential signals, e.g. SECAM-system [4]

|  | H04N 11/20 |
· · | Conversion of the manner in which the individual colour picture signal components are combined, e.g. conversion of colour television standards [4]

|  | H04N 11/22 |
· · · | in which simultaneous signals are converted into sequential signals or vice versa [4]

|  | H04N 11/24 |
· | High-definition television systems [6]

P:30 |  | H04N 13/00 |
Stereoscopic television systems; Details thereof (specially adapted for colour television Fulltext... Hierarchy... Expanded...H04N 15/00) [4]

|  | H04N 13/02 |
· | Picture signal generators [4]

|  | H04N 13/04 |
· | Picture reproducers [4]

P:20 |  | H04N 15/00 |
Stereoscopic colour television systems; Details thereof [4]

P:10 |  | H04N 17/00 |
Diagnosis, testing or measuring for television systems or their details [4]

|  | H04N 17/02 |
· | for colour television signals [4]

|  | H04N 17/04 |
· | for receivers [4]

|  | H04N 17/06 |
· | for recorders [4]

|  | H04N 101/00 |
Indexing scheme associated with groups Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...H04N 1/00-H04N 17/00, relating to still video cameras. [6]

P:90 |  | H04N 101/00 |
Still video cameras [6]