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 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)
Introduced: September 1968
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.
Title
Titles differ between systems:
IPC: INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
CPC: 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)
Full Title
Full titles differ between systems:
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
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)
Additional Content IPC
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 ,
Of 18 combined children, 16 exist in both systems.
2 codes are CPC-only extensions.
Note: 2 CPC extensions are marked as secondary classification only.
9 shared codes have differing titles between IPC and CPC.
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 +1 CPC IPC+CPC Available in IPC and CPC
- G11B 13/00 Recording simultaneously or selectively by methods covered by different main groups ; Record carriers therefor ; Reproducing therefrom IPC+CPC Available in IPC and CPC
- 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) +1 CPC IPC+CPC Available in IPC and CPC
- G11B 17/00 Guiding record carriers not specifically of filamentary or web form, or of supports therefor (guiding cards or sheets G06K13/00) +1 CPC IPC+CPC Available in IPC and CPC
- 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 IPC+CPC Available in IPC and CPC
- G11B 20/00 Signal processing not specific to the method of recording or reproducing; Circuits therefor since 1985 +3 CPC IPC+CPC Available in IPC and CPC
- G11B 21/00 Head arrangements not specific to the method of recording or reproducing +1 CPC IPC+CPC Available in IPC and CPC
- G11B 2209/00 Recording or reproducing using a method not covered elsewhere in this subclass 2nd only +1 CPC CPC only CPC only
- 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 +3 CPC IPC+CPC Available in IPC and CPC
- G11B 25/00 Apparatus characterised by the shape of record carrier employed but not specific to the method of recording or reproducing IPC+CPC Available in IPC and CPC
- G11B 27/00 Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel +2 CPC IPC+CPC Available in IPC and CPC
- 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) +4 CPC IPC+CPC Available in IPC and CPC
- G11B 31/00 Arrangements for the associated working of recording or reproducing apparatus with related apparatus (with cameras or projectors G03B31/00 ) +2 CPC IPC+CPC Available in IPC and CPC
- G11B 33/00 Constructional parts, details or accessories not provided for in the other groups of this subclass since 1985 +1 CPC IPC+CPC Available in IPC and CPC
- G11B 5/00 Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor (G11B11/00 take precedence) +1 CPC IPC+CPC Available in IPC and CPC
- 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) +1 CPC −1 IPC IPC+CPC Available in IPC and CPC
- 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 ) IPC+CPC Available in IPC and CPC
Top Applicants
Top Applicants (IPC)
Class G11,2013–2023, worldwide · Source: EPO PATSTAT
- MICRON TECHNOLOGY US 10,574
- SK HYNIX KR 9,138
- SAMSUNG ELECTRONICS COMPANY KR 9,004
- TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY TW 3,739
- IBM (INTERNATIONAL BUSINESS MACHINES CORPORATION) US 3,443
- INTEL CORPORATION US 2,952
- SANDISK TECHNOLOGIES US 2,905
- WESTERN DIGITAL TECHNOLOGIES US 2,630
- TOSHIBA CORPORATION JP 2,593
- SEAGATE TECHNOLOGY US 2,472
Top Applicants (CPC)
Class G11,2013–2023, worldwide · Source: EPO PATSTAT
- MICRON TECHNOLOGY US 12,397
- SAMSUNG ELECTRONICS COMPANY KR 12,238
- SK HYNIX KR 11,371
- TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY TW 4,601
- INTEL CORPORATION US 3,874
- IBM (INTERNATIONAL BUSINESS MACHINES CORPORATION) US 3,866
- SANDISK TECHNOLOGIES US 3,151
- SK HYNIX 3,143
- SAMSUNG ELECTRONICS COMPANY 3,073
- WESTERN DIGITAL TECHNOLOGIES US 2,961