G
SECTION G — PHYSICS
  
INSTRUMENTS
 G11
INFORMATION STORAGE
 G11B
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER (recording measured values in a way that does not require playback through a transducer G01D; photochemical processing of recordings G03C; electrography, electrophotography, magnetography G03G; recording or playback apparatus using mechanically marked tape, e.g. punched paper tape, or using unit records, e.g. punched or magnetically marked cards, G06K; transferring data from one type of record carrier to another G06K 1/18; printing of data from record carriers G06K 3/00; arrangements for producing a permanent visual presentation of the output data G06K 15/00; arrangements or circuits for control of indicating devices using static means to present variable information G09G; coding, decoding or code conversion, in general H03M; circuits for coupling output of reproducer to radio receiver H04B 1/20; circuits specially adapted for television signal recording H04N 5/76, H04N 9/79; electromechanical transducers or circuits therefor H04R)
 G11B

Note(s)

  1. This subclass covers:
    • recording or playback of information by relative movement between a record track and a transducer, the transducer directly producing, or being directly actuated by, modulation in the track being recorded or played-back, and the extent of modulation corresponding to the signal being recorded or played-back;
    • apparatus and machines for recording or playback, and parts thereof, such as heads;
    • record carriers for use with such apparatus and machines;
    • associated working of other apparatus with such apparatus and machines.
  2. In this subclass, the following terms or expressions are used with the meanings indicated:
    • "head" includes any means for converting sinusoidal or non-sinusoidal electric wave-forms into variations of the physical condition of at least the adjacent surface of the record carrier, or vice versa;
    • "record carrier" means a body, such as a cylinder, disc, card, tape, or wire, capable of permanently holding information, which can be read-off by a sensing element movable relatively to the record carrier.

 G11C
STATIC STORES (information storage based on relative movement between record carrier and transducer G11B; pulse technique in general H03K, e.g. electronic switches H03K 17/00)
 G11C

Note(s)

  1. This subclass covers devices or arrangements for storage of digital or analogue information:
    1. in which no relative movement takes place between an information storage element and a transducer;
    2. which incorporate a selecting-device for writing-in or reading-out the information into or from the store.
  2. This subclass does not cover elements not adapted for storage and not provided with such means as referred to in Note (3) below, which elements are classified in the appropriate subclass, e.g. of H01, H03K.
  3. In this subclass, a storage element is provided with means for writing-in and reading-out at least one item of information.

 G11D
( transferred to G06F 12/00, G06F 13/00 )