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 G01D9/00; 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 G06K1/18; circuits for coupling output of reproducer to radio receiver H04B1/20; gramophone pick-ups or like acoustic electromechanical transducers or circuits therefor H04R)

Description

G11B covers magnetic, optical, and mechanical information storage systems where data is recorded on and read from a carrier medium through relative motion between the medium and a transducer. This includes magnetic tape recorders, cassettes, reels, cartridges, and disk drives; optical disks such as CDs and DVDs; and mechanical storage devices utilizing grooves or similar features. The classification encompasses the physical media, transport mechanisms, read/write heads, and playback apparatus, but excludes static storage methods covered by G11C (semiconductor memory) and purely optical recording without transducer movement.

18 direct subcodes

Child Classifications

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G11B 11/00 Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
G11B 13/00 Recording simultaneously or selectively by methods covered by different main groups ; Record carriers therefor ; Reproducing therefrom
G11B 15/00 Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function (driving or guiding heads G11B3/00 - G11B7/00, G11B21/00)
G11B 17/00 Guiding record carriers not specifically of filamentary or web form, or of supports therefor (guiding cards or sheets G06K13/00)
G11B 19/00 Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function
G11B 20/00 Signal processing not specific to the method of recording or reproducing; Circuits therefor
G11B 21/00 Head arrangements not specific to the method of recording or reproducing
G11B 2209/00 Recording or reproducing using a method not covered elsewhere in this subclass
G11B 2220/00 Record carriers by type
G11B 23/00 Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus
G11B 25/00 Apparatus characterised by the shape of record carrier employed but not specific to the method of recording or reproducing
G11B 27/00 Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
G11B 3/00 Recording by mechanical cutting, deforming or pressing, e.g. of grooves or pits; Reproducing by mechanical sensing; Record carriers therefor (G11B11/00, take precedence)
G11B 31/00 Arrangements for the associated working of recording or reproducing apparatus with related apparatus (with cameras or projectors G03B31/00 )
G11B 33/00 Constructional parts, details or accessories not provided for in the other groups of this subclass
G11B 5/00 Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor (G11B11/00 take precedence)
G11B 7/00 Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation , reproducing using an optical beam at lower power ; Record carriers therefor (G11B11/00, G11B13/00 take precedence)
G11B 9/00 Recording or reproducing using a method not covered by one of the main groups G11B3/00 - G11B7/00; Record carriers therefor (G11B11/00 takes precedence )