|  | G |
SECTION G — PHYSICS

INSTRUMENTS

|  | G11 |
INFORMATION STORAGE

|  | G11C |
STATIC STORES (recording and playback of information by relative movement between a record track and a transducer Fulltext... Hierarchy... Expanded...G11B; pulse technique in general Fulltext... Hierarchy... Expanded...H03K, e.g. electronic switches Fulltext... Hierarchy... Expanded...H03K 17/00)

|  | G11C |
Note(s) This sub-class deals with devices or arrangements for storage of digital or analogue information: in which no relative movement takes place between an information storage element and a transducer; which incorporate a selecting-device for writing-in or reading-out the information into or from the store. In this sub-class, a storage element is provided with means for writing-in and reading-out at least one item of information. Elements not adapted for storage and not provided with such means are classified in the appropriate sub-class, e.g. of Fulltext... Hierarchy... Expanded...H01, Fulltext... Hierarchy... Expanded...H03K.

|  | G11C 5/00 |
Details of stores covered by Fulltext... Hierarchy... Expanded...G11C 11/00

|  | G11C 5/02 |
· | Disposition of storage elements, e.g. in the form of a matrix array

|  | G11C 5/04 |
· · | Supports for storage elements; Mounting or fixing of storage elements on such supports

|  | G11C 5/05 |
· · · | Supporting of cores in matrix [2]

|  | G11C 5/06 |
· | Arrangements for interconnecting storage elements electrically, e.g. by wiring

|  | G11C 5/08 |
· · | for interconnecting magnetic elements, e.g. toroidal cores

|  | G11C 5/10 |
· · | for interconnecting capacitors

|  | G11C 5/12 |
· | Apparatus or processes for interconnecting storage elements, e.g. for threading magnetic cores

|  | G11C 7/00 |
Arrangements for writing information into, or reading information out from, a digital store (Fulltext... Hierarchy... Expanded...G11C 5/00, Fulltext... Hierarchy... Expanded...G11C 11/00 take precedence) [2]

|  | G11C 7/02 |
· | with means for avoiding parasitic signals

|  | G11C 7/04 |
· | with means for avoiding disturbances due to temperature effects

|  | G11C 7/06 |
· | Adaptations of amplifiers (amplifiers per se Fulltext... Hierarchy... Expanded...H03F, Fulltext... Hierarchy... Expanded...H03K)

|  | G11C 8/00 |
Arrangements for selecting an address in a digital store [2]

|  | G11C 8/02 |
· | using selecting matrix [2]

|  | G11C 9/00 |
Transmission of digital information between stores, e.g. of different types (in digital computing arrangements Fulltext... Hierarchy... Expanded...G06F 13/00)

|  | G11C 9/02 |
· | Transfer between registers [2]

|  | G11C 9/04 |
· | Transfer between location-addressed stores [2]

|  | G11C 9/06 |
· · | with hierarchically-ordered stores, e.g. between scratchpad and main store, between fast and slow stores, between small working stores and bulk stores; Block transfer, paging [2]

|  | G11C 9/08 |
· | between content-addressed and location-addressed stores [2]

|  | G11C 11/00 |
Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor (Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...G11C 15/00-G11C 21/00 take precedence)

|  | G11C 11/02 - G11C 11/54 |
Note(s) Group Fulltext... Hierarchy... Expanded...G11C 11/56 takes precedence over groups Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...G11C 11/02-G11C 11/54. [2]

|  | G11C 11/02 |
· | using magnetic elements

|  | G11C 11/04 |
· · | using storage elements having cylindrical form, e.g. rod, wire (Fulltext... Hierarchy... Expanded...G11C 11/12, Fulltext... Hierarchy... Expanded...G11C 11/14 take precedence) [2]

|  | G11C 11/06 |
· · | using single-aperture storage elements, e.g. ring core; using multi-aperture plates in which each individual aperture forms a storage element

|  | G11C 11/061 |
· · · | using elements with single aperture or magnetic loop for storage, one element per bit, and for destructive read-out [2]

|  | G11C 11/063 |
· · · · | bit-organised, such as, 2 L/2 D-, 3D-organisation, i.e. for selection of an element by means of at least two coincident partial currents both for reading and for writing [2]

|  | G11C 11/065 |
· · · · | word-organised, such as 2 D-organisation, or linear selection, i.e. for selection of all the elements of a word by means of a single full current for reading [2]

|  | G11C 11/067 |
· · · | using elements with single aperture or magnetic loop for storage, one element per bit, and for non-destructive read-out [2]

|  | G11C 11/08 |
· · | using multi-aperture storage elements, e.g. using transfluxors; using plates incorporating several individual multi-aperture storage elements (Fulltext... Hierarchy... Expanded...G11C 11/10 takes precedence; using multi-aperture plates in which each individual aperture forms a storage element Fulltext... Hierarchy... Expanded...G11C 11/06) [2]

|  | G11C 11/10 |
· · | using multi-axial storage elements

|  | G11C 11/12 |
· · | using tensors; using twistors, i.e. elements in which one axis of magnetisation is twisted

|  | G11C 11/14 |
· · | using thin-film elements

|  | G11C 11/15 |
· · · | using multiple magnetic layers (Fulltext... Hierarchy... Expanded...G11C 11/155 takes precedence) [2]

|  | G11C 11/155 |
· · · | with cylindrical configuration [2]

|  | G11C 11/16 |
· · | using elements in which the storage effect is based on magnetic spin effect

|  | G11C 11/18 |
· | using Hall-effect devices

|  | G11C 11/19 |
· | using non-linear reactive devices in resonant circuits [2]

|  | G11C 11/20 |
· · | using parametrons [2]

|  | G11C 11/21 |
· | using electric elements [2]

|  | G11C 11/22 |
· · | using ferroelectric elements [2]

|  | G11C 11/23 |
· · | using electrostatic storage on a common layer, e.g. Forrester-Haeff tubes (Fulltext... Hierarchy... Expanded...G11C 11/22 takes precedence) [2]

|  | G11C 11/24 |
· · | using capacitors (Fulltext... Hierarchy... Expanded...G11C 11/22 takes precedence) [2]

|  | G11C 11/26 |
· · | using discharge tubes [2]

|  | G11C 11/28 |
· · · | using gas-filled tubes [2]

|  | G11C 11/30 |
· · · | using vacuum tubes (Fulltext... Hierarchy... Expanded...G11C 11/23 takes precedence) [2]

|  | G11C 11/32 |
( transferred to Fulltext... Hierarchy... Expanded...G11C 11/23 )

|  | G11C 11/34 |
· · | using semiconductor devices [2]

|  | G11C 11/36 |
· · · | using diodes, e.g. as threshold elements [2]

|  | G11C 11/38 |
· · · · | using tunnel diodes [2]

|  | G11C 11/40 |
· · · | using transistors [2]

|  | G11C 11/42 |
· · | using electro-optical elements [2]

|  | G11C 11/44 |
· · | using super-conductive elements, e.g. cryotron [2]

|  | G11C 11/46 |
· | using thermoplastic elements

|  | G11C 11/48 |
· | using displaceable coupling elements, e.g. ferromagnetic cores, to produce change between different states of mutual or self-inductance

|  | G11C 11/50 |
· | using actuation of electric contacts to store the information (mechanical stores Fulltext... Hierarchy... Expanded...G11C 23/00; switches providing a selected number of consecutive operations of the contacts by a single manual actuation of the operating part Fulltext... Hierarchy... Expanded...H01H 41/00)

|  | G11C 11/52 |
· · | using electromagnetic relays

|  | G11C 11/54 |
· | using elements simulating biological cells, e.g. neuron

|  | G11C 11/56 |
· | Storage elements with more than two stable states represented by steps, e.g. of voltage, current, phase, frequency (counting arrangements comprising multi-stable elements of this type Fulltext... Hierarchy... Expanded...H03K 25/00, Fulltext... Hierarchy... Expanded...H03K 29/00) [2]

|  | G11C 13/00 |
Digital stores characterised by the use of storage elements not covered by groups Fulltext... Hierarchy... Expanded...G11C 11/00, Fulltext... Hierarchy... Expanded...G11C 23/00, or Fulltext... Hierarchy... Expanded...G11C 25/00

|  | G11C 13/02 |
· | using elements whose operation depends upon chemical change (using electrochemical charge Fulltext... Hierarchy... Expanded...G11C 11/00)

|  | G11C 13/04 |
· | using optical elements

|  | G11C 13/06 |
· · | using magneto-optical elements (magneto-optics in general Fulltext... Hierarchy... Expanded...G02F) [2]

|  | G11C 13/08 |
· · | using electro-optical elements (electro-optics in general Fulltext... Hierarchy... Expanded...G02F) [2]

|  | G11C 15/00 |
Digital stores in which information comprising one or more characteristic parts is written into the store and in which information is read-out by searching for one or more of these characteristic parts, i.e. associative or content-addressed stores (in which information is addressed to a specific location Fulltext... Hierarchy... Expanded...G11C 11/00) [2]

|  | G11C 15/02 |
· | using magnetic elements [2]

|  | G11C 15/04 |
· | using semiconductor elements [2]

|  | G11C 15/06 |
· | using cryogenic elements [2]

|  | G11C 17/00 |
Permanent stores with provision only for reading-out of information, i.e. read-only memories; Semi-permanent stores, e.g. manually-replaceable information cards (coders, decoders Fulltext... Hierarchy... Expanded...H03K 13/24) [2]

|  | G11C 17/02 |
· | using magnetic or inductive elements or coupling [2]

|  | G11C 17/04 |
· | using capacitive elements or coupling (Fulltext... Hierarchy... Expanded...G11C 17/06 takes precedence) [2]

|  | G11C 17/06 |
· | using diode elements or coupling [2]

|  | G11C 19/00 |
Digital stores in which the information is moved stepwise, e.g. shift register (counting chains Fulltext... Hierarchy... Expanded...H03K 23/00) [2]

|  | G11C 19/02 |
· | using magnetic elements (Fulltext... Hierarchy... Expanded...G11C 19/14 takes precedence) [2]

|  | G11C 19/04 |
· · | using cores with one aperture or magnetic loop [2]

|  | G11C 19/06 |
· · | using structures with a number of apertures or magnetic loops, e.g. transfluxors [2]

|  | G11C 19/08 |
· · | using thin films in plane structure [2]

|  | G11C 19/10 |
· · | using thin films on rods; with twistors [2]

|  | G11C 19/12 |
· | using non-linear reactive devices in resonant circuits [2]

|  | G11C 19/14 |
· | using magnetic elements in combination with active elements, e.g. discharge tubes, semiconductor elements [2]

|  | G11C 19/18 |
· | using capacitors as main elements of the stages [2]

|  | G11C 19/20 |
· | using discharge tubes (Fulltext... Hierarchy... Expanded...G11C 19/14 takes precedence) [2]

|  | G11C 19/28 |
· | using semiconductor elements (Fulltext... Hierarchy... Expanded...G11C 19/14 takes precedence) [2]

|  | G11C 19/30 |
· | using opto-electronic devices, i.e. light-emitting and photoelectric devices electrically- or optically-coupled [2]

|  | G11C 19/32 |
· | using super-conductive elements [2]

|  | G11C 21/00 |
Digital stores in which the information circulates (stepwise Fulltext... Hierarchy... Expanded...G11C 19/00)

|  | G11C 21/02 |
· | using electromechanical delay lines, e.g. using a mercury tank

|  | G11C 23/00 |
Digital stores characterised by movement of mechanical parts to effect storage, e.g. using balls; Storage elements therefor (storing by actuating contacts Fulltext... Hierarchy... Expanded...G11C 11/48)

|  | G11C 25/00 |
Digital stores characterised by the use of flowing media; Storage elements therefor

|  | G11C 27/00 |
Electric analogue stores, e.g. for storing instantaneous values

|  | G11C 27/02 |
· | Sample-and-hold arrangements [2]

|  | G11C 29/00 |
Checking stores for correct operation