INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER

Introduced: September 1968

Classification Context

Section:: PHYSICS
Class:: INFORMATION STORAGE
Subclass:: INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER

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.

Scope Notes

Glossary: record carrier Record carriers 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 head heads 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 near-field interaction near-field interactions means a very short distance interaction using scanning-probe techniques, e.g. quasi- contact or evanescent contact between head and record carrier | Limiting references: Recording measured values in a way that does not require playback through a transducer Recording or playback apparatus using mechanically marked tape, e.g. punched paper tape, or using unit records, e.g. punched or magnetically marked cards Transferring data from one type of record carrier to another type of record carrier Guiding cards or sheets Record carriers for use with machines and with at least a part designed to carry digital markings Details of scanning-probe apparatus Circuits for coupling output of reproducer to radio receiver Loudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducers or circuits therefor | Application references: Associated working of cameras or projectors with sound-recording or -reproducing means Substation equipment for recording telephonic conversations or messages for absent subscribers Television signal recording ,

Related Keywords

BOBBINS for record carriersCIRCUITS for data stores involving movementCOPYING of stored information by transcribing on to a record carrier of a different type, relative movement between transducer and the second record carriercutters for sharpening or repointing of gramophone styliDAMPING of moving-parts in information-recording apparatusDICTAPHONEERASING of records on record carriersFEEDING of record carriersGRAMOPHONE(S)GROOVING in record carriersHEAD(S) for recording or reproducing informationLABEL(S) on record carriersPHONOGRAPHSplayback of recorded informationgramophone RECORD(S)RECORD(S) carriersRECORD(S) carriers for recording of information by movement relative to the transducerRECORDING for subsequent reproduction, e.g. of soundREPOINTING of gramophone styliREPRODUCTION by relative movement between a transducer and a record carrierSAPPHIRES for information recording or playbackSCANNING-PROBE TECHNIQUES for recording or reproducing informationrecording or reproducing SOUND(S) by relative movement between transducer and record carrierrecording SPEECH for subsequent reproductionSPLICING of record carriersSPOOL(S) for record carriersSTORAGE of information requiring relative movement between record carrier and transducerSTYLI for recording and playback of informationTHREADING of record carriersTRANSDUCERS for recording and playback of informationTRANSDUCERS used in recording or reproducing headsTURNTABLES for record carriersvideo circuits in general

16 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 or means are covered by different main groups of groups or by different subgroups of group; Record carriers therefor
G11B 13/00 Recording simultaneously or selectively by methods or means covered by different main groups; Record carriers therefor; Reproducing simultaneously or selectively 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
G11B 17/00 Guiding record carriers not specifically of filamentary or web form, or of supports therefor
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 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
G11B 31/00 Arrangements for the associated working of recording or reproducing apparatus with related apparatus
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
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
G11B 9/00 Recording or reproducing using a method or means not covered by one of the main groups; Record carriers therefor