characterised by the use of three levels

Industry

CPC
G11B20/1488

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Parent Industries

GPHYSICS G11Information storage G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER G11B20/00Signal processing not specific to the method of recording or reproducing Circuits therefor

Current Industry

G11B20/1488characterised by the use of three levels

Industries

Patents Grantslast 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 Applicationslast 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

characterised by the use of three levels

Industry

Parent Industries

Current Industry

Patents Grantslast 30 patents

Recording device, recording/reproducing method, and reproducing method

Information recording apparatus, information reading apparatus and...

Apparatus and method for demodulating signal

Optical disc medium, optical disc recording/reproducing apparatus a...

Multi-value data recording and reproducing device

Multilevel record modulator and demodulator

PRML regenerating apparatus having adjusted slice levels

Automatic clock signal phase adjustment in which a pattern includin...

PRML regenerating apparatus

PRML regenerating apparatus

PRML regenerating apparatus having reduced number of charge pump ci...

Automatic clock signal phase adjusting circuit

Automatic clock signal phase adjusting circuit utilizing level dete...

Method and apparatus for digital signal recording and/or reproduction

Data reproducing apparatus with means for differentiating a read he...

Eight-sample look-ahead for coded signal processing channels

Method and apparatus for processing sample values in a coded signal...

Encoding and decoding apparatus and method utilizing hierarchical c...

Read signal detection in ternary 3PM magnetic recording

Ternary magnetic recording and reproducing system with simultaneous...

Data conversion system

3634855

3357003

3274611

2864078

Patents Applicationslast 30 patents

RECORDING DEVICE, RECORDING/REPRODUCING METHOD, AND REPRODUCING METHOD

INFORMATION RECORDING APPARATUS, INFORMATION READING APPARATUS AND...

Optical disc medium, optical disc recording/reproducing apparatus a...

Apparatus and method for demodulating signal

Multi-value data recording and reproducing device

Multilevel record modulator and demodulator