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characterised by the use of three levels
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CPC
G11B20/1488
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Parent Industries
G
PHYSICS
G11
Information storage
G11B
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
G11B20/00
Signal processing not specific to the method of recording or reproducing Circuits therefor
Current Industry
G11B20/1488
characterised by the use of three levels
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Patents Grants
last 30 patents
Information
Patent Grant
Recording device, recording/reproducing method, and reproducing method
Patent number
8,149,486
Issue date
Apr 3, 2012
Sony Corporation
Masaaki Hara
G11 - INFORMATION STORAGE
Information
Patent Grant
Information recording apparatus, information reading apparatus and...
Patent number
7,885,161
Issue date
Feb 8, 2011
Fuji Xerox Co., Ltd.
Tetsuya Kimura
G11 - INFORMATION STORAGE
Information
Patent Grant
Apparatus and method for demodulating signal
Patent number
7,317,766
Issue date
Jan 8, 2008
Samsung Electronics Co., Ltd.
Ki-hyun Kim
G11 - INFORMATION STORAGE
Information
Patent Grant
Optical disc medium, optical disc recording/reproducing apparatus a...
Patent number
7,095,700
Issue date
Aug 22, 2006
Sony Corporation
Seiji Kobayashi
G11 - INFORMATION STORAGE
Information
Patent Grant
Multi-value data recording and reproducing device
Patent number
7,027,375
Issue date
Apr 11, 2006
Ricoh Company, Ltd.
Akihiko Shimizu
G11 - INFORMATION STORAGE
Information
Patent Grant
Multilevel record modulator and demodulator
Patent number
6,778,483
Issue date
Aug 17, 2004
Matsushita Electric Industrial Co., Ltd.
Hiroki Mouri
G11 - INFORMATION STORAGE
Information
Patent Grant
PRML regenerating apparatus having adjusted slice levels
Patent number
6,002,538
Issue date
Dec 14, 1999
Fujitsu, Ltd.
Masahide Kanegae
G11 - INFORMATION STORAGE
Information
Patent Grant
Automatic clock signal phase adjustment in which a pattern includin...
Patent number
5,852,525
Issue date
Dec 22, 1998
Sony Corporation
Takahito Seki
G11 - INFORMATION STORAGE
Information
Patent Grant
PRML regenerating apparatus
Patent number
5,847,891
Issue date
Dec 8, 1998
Fujitsu Limited
Hideki Ohmori
G11 - INFORMATION STORAGE
Information
Patent Grant
PRML regenerating apparatus
Patent number
5,841,602
Issue date
Nov 24, 1998
Fujitsu Limited
Masahide Kanegae
G11 - INFORMATION STORAGE
Information
Patent Grant
PRML regenerating apparatus having reduced number of charge pump ci...
Patent number
5,825,570
Issue date
Oct 20, 1998
Fujitsu Limited
Masahide Kanegae
G11 - INFORMATION STORAGE
Information
Patent Grant
Automatic clock signal phase adjusting circuit
Patent number
5,615,059
Issue date
Mar 25, 1997
Sony Corporation
Takahito Seki
G11 - INFORMATION STORAGE
Information
Patent Grant
Automatic clock signal phase adjusting circuit utilizing level dete...
Patent number
5,615,060
Issue date
Mar 25, 1997
Sony Corporation
Takahito Seki
G11 - INFORMATION STORAGE
Information
Patent Grant
Method and apparatus for digital signal recording and/or reproduction
Patent number
5,552,940
Issue date
Sep 3, 1996
Hitachi, Ltd.
Masuo Umemoto
G11 - INFORMATION STORAGE
Information
Patent Grant
Data reproducing apparatus with means for differentiating a read he...
Patent number
5,357,378
Issue date
Oct 18, 1994
Sony Corporation
Yoshiyuki Urakawa
G11 - INFORMATION STORAGE
Information
Patent Grant
Eight-sample look-ahead for coded signal processing channels
Patent number
5,291,500
Issue date
Mar 1, 1994
International Business Machines Corporation
Arvind M. Patel
G11 - INFORMATION STORAGE
Information
Patent Grant
Method and apparatus for processing sample values in a coded signal...
Patent number
4,945,538
Issue date
Jul 31, 1990
International Business Machines Corporation
Arvind M. Patel
G11 - INFORMATION STORAGE
Information
Patent Grant
Encoding and decoding apparatus and method utilizing hierarchical c...
Patent number
4,551,773
Issue date
Nov 5, 1985
Sperry Corporation
Martin Cohn
G11 - INFORMATION STORAGE
Information
Patent Grant
Read signal detection in ternary 3PM magnetic recording
Patent number
4,544,963
Issue date
Oct 1, 1985
Sperry Corporation
George V. Jacoby
G11 - INFORMATION STORAGE
Information
Patent Grant
Ternary magnetic recording and reproducing system with simultaneous...
Patent number
4,482,927
Issue date
Nov 13, 1984
Sperry Corporation
Hartvig E. Melbye
G11 - INFORMATION STORAGE
Information
Patent Grant
Data conversion system
Patent number
4,201,942
Issue date
May 6, 1980
Edward W. Downer
G11 - INFORMATION STORAGE
Information
Patent Grant
3634855
Patent number
3,634,855
Issue date
Jan 11, 1972
G11 - INFORMATION STORAGE
Information
Patent Grant
3357003
Patent number
3,357,003
Issue date
Dec 5, 1967
G11 - INFORMATION STORAGE
Information
Patent Grant
3274611
Patent number
3,274,611
Issue date
Sep 20, 1966
G11 - INFORMATION STORAGE
Information
Patent Grant
2864078
Patent number
2,864,078
Issue date
Dec 9, 1958
G11 - INFORMATION STORAGE
Patents Applications
last 30 patents
Information
Patent Application
RECORDING DEVICE, RECORDING/REPRODUCING METHOD, AND REPRODUCING METHOD
Publication number
20090262406
Publication date
Oct 22, 2009
SONY CORPORATION
Masaaki Hara
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Application
INFORMATION RECORDING APPARATUS, INFORMATION READING APPARATUS AND...
Publication number
20090161514
Publication date
Jun 25, 2009
FUJI XEROX CO., LTD
Tetsuya KIMURA
G11 - INFORMATION STORAGE
Information
Patent Application
Optical disc medium, optical disc recording/reproducing apparatus a...
Publication number
20040081068
Publication date
Apr 29, 2004
Seiji Kobayashi
G11 - INFORMATION STORAGE
Information
Patent Application
Apparatus and method for demodulating signal
Publication number
20040028150
Publication date
Feb 12, 2004
Samsung Electronics Co., Ltd.
Ki-hyun Kim
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Application
Multi-value data recording and reproducing device
Publication number
20030210634
Publication date
Nov 13, 2003
Akihiko Shimizu
G11 - INFORMATION STORAGE
Information
Patent Application
Multilevel record modulator and demodulator
Publication number
20020054557
Publication date
May 9, 2002
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
Hiroki Mouri
G11 - INFORMATION STORAGE