two levels are symmetric, in respect of the sign to the third level which is "zero"

Industry

CPC
G11B20/1492

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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

G11B20/1492two levels are symmetric, in respect of the sign to the third level which is "zero"

Industries

Patents Grantslast 30 patents

Information Patent Grant
Adaptive correction of symmetrical and asymmetrical saturation in m...
- Patent number 9,305,591
- Issue date Apr 5, 2016
- Quantum Corporation
- Marc Feller
- G11 - INFORMATION STORAGE
Information Patent Grant
Adaptive correction of symmetrical and asymmetrical saturation in m...
- Patent number 8,760,789
- Issue date Jun 24, 2014
- Quantum Corporation
- Marc Feller
- G11 - INFORMATION STORAGE
Information Patent Grant
Detecting a periodic sequence of servo signals
- Patent number 8,139,302
- Issue date Mar 20, 2012
- International Business Machines Corporation
- Nhan X. Bui
- G11 - INFORMATION STORAGE
Information Patent Grant
Biphase multiple level communications
- Patent number 7,912,143
- Issue date Mar 22, 2011
- And Yet, Inc.
- Martin H. Graham
- G11 - INFORMATION STORAGE
Information Patent Grant
Apparatus, system, and method for detecting a periodic sequence of...
- Patent number 7,813,077
- Issue date Oct 12, 2010
- International Business Machines Corporation
- Nhan Xuan Bui
- G11 - INFORMATION STORAGE
Information Patent Grant
High-density recording method for hard disk drives and a pre-amplif...
- Patent number 7,701,657
- Issue date Apr 20, 2010
- Samsung Electronics Co., Ltd.
- Chul-woo Lee
- G11 - INFORMATION STORAGE
Information Patent Grant
Biphasic multiple level storage method
- Patent number 6,473,252
- Issue date Oct 29, 2002
- And Yet, Inc.
- Martin H. Graham
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical disk drive using y0+y1 signal detection
- Patent number 6,275,967
- Issue date Aug 14, 2001
- Texas Instruments Incorporated
- Ryohei Kuki
- G11 - INFORMATION STORAGE
Information Patent Grant
Playback data detecting apparatus
- Patent number 5,938,789
- Issue date Aug 17, 1999
- NEC Corporation
- Satoshi Itoi
- G11 - INFORMATION STORAGE
Information Patent Grant
Data processing apparatus and methods including a phase lock loop
- Patent number 5,896,067
- Issue date Apr 20, 1999
- Hewlett-Packard Company
- Christopher Huw Williams
- G11 - INFORMATION STORAGE
Information Patent Grant
Ternary code magnetic recording system
- Patent number 5,621,580
- Issue date Apr 15, 1997
- Joao R. Cruz
- G11 - INFORMATION STORAGE
Information Patent Grant
Digital coding technique which avoids loss of synchronization
- Patent number 5,461,379
- Issue date Oct 24, 1995
- AT&T IPM Corp.
- Joseph B. Weinman
- G11 - INFORMATION STORAGE
Information Patent Grant
Decision-directed digital phase locked loop
- Patent number 5,400,364
- Issue date Mar 21, 1995
- Sony Corporation
- Hiroaki Yada
- G11 - INFORMATION STORAGE
Information Patent Grant
Method and circuit for regenerating a binary bit stream from a tern...
- Patent number 5,367,535
- Issue date Nov 22, 1994
- Deutsche Thomson-Brandt GmbH
- Werner Scholz
- G11 - INFORMATION STORAGE
Information Patent Grant
Method for recording and/or reproducing a signal
- Patent number 5,148,333
- Issue date Sep 15, 1992
- Sony Corp.
- Yoshihide Shinpuku
- G11 - INFORMATION STORAGE
Information Patent Grant
Apparatus for encoding an NRZ digital signal as a BRZ synchronous F...
- Patent number 4,775,900
- Issue date Oct 4, 1988
- Eastman Kodak Company
- Kurt V. Blessinger
- G11 - INFORMATION STORAGE
Information Patent Grant
Installation for recording and recovering binary signals on a magne...
- Patent number 4,651,234
- Issue date Mar 17, 1987
- Norbert Bauer
- G11 - INFORMATION STORAGE
Information Patent Grant
Installation for recording and recovering binary signals on a magne...
- Patent number 4,600,954
- Issue date Jul 15, 1986
- Norbert Bauer
- G11 - INFORMATION STORAGE
Information Patent Grant
Direction-constrained ternary codes using peak and polarity detection
- Patent number 4,566,044
- Issue date Jan 21, 1986
- International Business Machines Corporation
- Glen G. Langdon
- G11 - INFORMATION STORAGE
Information Patent Grant
Controlled return to A.C. digital magnetic and reproducing system
- Patent number 4,470,081
- Issue date Sep 4, 1984
- Sperry Corporation
- Chao S. Chi
- G11 - INFORMATION STORAGE
Information Patent Grant
Automatic threshold tracking system
- Patent number 4,399,474
- Issue date Aug 16, 1983
- Ampex Corporation
- Charles H. Coleman
- G11 - INFORMATION STORAGE
Information Patent Grant
Tri-level differential line receiver
- Patent number 4,380,080
- Issue date Apr 12, 1983
- Sperry Corporation
- Glen D. Rattlingourd
- G11 - INFORMATION STORAGE
Information Patent Grant
A/D Dynamic range enhancing technique
- Patent number 4,352,095
- Issue date Sep 28, 1982
- The United States of America as represented by the Secretary of the Navy
- Gerald L. Assard
- G11 - INFORMATION STORAGE
Information Patent Grant
Tri-level digital recording
- Patent number 4,340,913
- Issue date Jul 20, 1982
- TBS International, Inc.
- Ellis K. Cave
- G11 - INFORMATION STORAGE
Information Patent Grant
Interleaved dipulse sequence generating apparatus for data transmis...
- Patent number 4,330,799
- Issue date May 18, 1982
- Sperry Corporation
- Robert Price
- G11 - INFORMATION STORAGE
Information Patent Grant
High density bias linearized magnetic recording system utilizing Ny...
- Patent number 4,195,318
- Issue date Mar 25, 1980
- Sperry Corporation
- Robert Price
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic storage systems for coded numerical data with reversible t...
- Patent number 4,186,375
- Issue date Jan 29, 1980
- Thomson-CSF
- Jean-Louis Castellani
- G11 - INFORMATION STORAGE
Information Patent Grant
Apparatus and method for timing recovery from a pseudo-ternary signal
- Patent number 4,122,397
- Issue date Oct 24, 1978
- GTE Automatic Electric Laboratories Incorporated
- Jay A. Thomas
- G11 - INFORMATION STORAGE
Information Patent Grant
System for transmission storage and/or multiplexing of information
- Patent number 4,103,234
- Issue date Jul 25, 1978
- General Dynamics Corp.
- William R. Frazier
- G11 - INFORMATION STORAGE
Information Patent Grant
Pulse code modulation recording and/or reproducing system
- Patent number 4,017,903
- Issue date Apr 12, 1977
- Hewlett-Packard Company
- Peter F. Chu
- G11 - INFORMATION STORAGE

Patents Applicationslast 30 patents

Information Patent Application
ADAPTIVE CORRECTION OF SYMMETRICAL AND ASYMMETRICAL SATURATION IN M...
- Publication number 20140300986
- Publication date Oct 9, 2014
- Quantum Corporation
- Marc Feller
- G11 - INFORMATION STORAGE
Information Patent Application
Adaptive Correction of Symmetrical and Asymmetrical Saturation in M...
- Publication number 20130077187
- Publication date Mar 28, 2013
- Quantum Corporation
- Marc Feller
- G11 - INFORMATION STORAGE
Information Patent Application
DETECTING A PERIODIC SEQUENCE OF SERVO SIGNALS
- Publication number 20100302666
- Publication date Dec 2, 2010
- International Business Machines Corporation
- Nhan X. Bui
- G11 - INFORMATION STORAGE
Information Patent Application
APPARATUS, SYSTEM, AND METHOD FOR DETECTING A PERIODIC SEQUENCE OF...
- Publication number 20080055759
- Publication date Mar 6, 2008
- Nhan Xuan Bui
- G11 - INFORMATION STORAGE
Information Patent Application
High-density recording method for hard disk drives and a pre-amplif...
- Publication number 20070183072
- Publication date Aug 9, 2007
- Samsung Electronics Co., Ltd.
- Chul-Woo Lee
- G11 - INFORMATION STORAGE

two levels are symmetric, in respect of the sign to the third level which is "zero"

Industry

Parent Industries

Current Industry

Patents Grantslast 30 patents

Adaptive correction of symmetrical and asymmetrical saturation in m...

Adaptive correction of symmetrical and asymmetrical saturation in m...

Detecting a periodic sequence of servo signals

Biphase multiple level communications

Apparatus, system, and method for detecting a periodic sequence of...

High-density recording method for hard disk drives and a pre-amplif...

Biphasic multiple level storage method

Optical disk drive using y0&#x0002B;y1 signal detection

Playback data detecting apparatus

Data processing apparatus and methods including a phase lock loop

Ternary code magnetic recording system

Digital coding technique which avoids loss of synchronization

Decision-directed digital phase locked loop

Method and circuit for regenerating a binary bit stream from a tern...

Method for recording and/or reproducing a signal

Apparatus for encoding an NRZ digital signal as a BRZ synchronous F...

Installation for recording and recovering binary signals on a magne...

Installation for recording and recovering binary signals on a magne...

Direction-constrained ternary codes using peak and polarity detection

Controlled return to A.C. digital magnetic and reproducing system

Automatic threshold tracking system

Tri-level differential line receiver

A/D Dynamic range enhancing technique

Tri-level digital recording

Interleaved dipulse sequence generating apparatus for data transmis...

High density bias linearized magnetic recording system utilizing Ny...

Magnetic storage systems for coded numerical data with reversible t...

Apparatus and method for timing recovery from a pseudo-ternary signal

System for transmission storage and/or multiplexing of information

Pulse code modulation recording and/or reproducing system

Patents Applicationslast 30 patents

ADAPTIVE CORRECTION OF SYMMETRICAL AND ASYMMETRICAL SATURATION IN M...

Adaptive Correction of Symmetrical and Asymmetrical Saturation in M...

DETECTING A PERIODIC SEQUENCE OF SERVO SIGNALS

APPARATUS, SYSTEM, AND METHOD FOR DETECTING A PERIODIC SEQUENCE OF...

High-density recording method for hard disk drives and a pre-amplif...

Optical disk drive using y0+y1 signal detection