Method and apparatus for generating a phase dependent control signal

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 6931086
APP PUB NO 20020154721A1
SERIAL NO

10176852

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Abstract

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A phase detector generates a phase dependent control signal according to the phase relationship between a first and second clock signal. The phase detector includes first and second phase detector circuits receiving the first and second clock signals and generating select signals having duty cycles corresponding to the phase relationship between the clock edges of the first and second clock signals. The phase detector also includes a charge pump that receives select signals from the phase detector circuits and produces an increasing or decreasing control signal when the first and second clock signals do not have the predetermined phase relationship, and a non-varying control signal when the first and second clock signals do have the predetermined phase relationship. The control signal may be used to adjust the delay value of a voltage-controlled delay circuit in order to adjust the phase relationship between the first and second clock signals to have a predetermined phase relationship.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
ROUND ROCK RESEARCH, LLCBOISE, ID3508

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Harrison, Ronnie M Boise, ID 40 1124

Cited Art Landscape

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* Cited By Examiner

Patent Citation Ranking

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Patent Info (Count) # Cites Year
 
Other [Check patent profile for assignment information] (1)
* 2004/0153,684 Optimization of integrated circuit device I/O bus timing 1 2004
 
ROUND ROCK RESEARCH, LLC (5)
* 7889593 Method and apparatus for generating a sequence of clock signals 2 2007
* 8107580 Method and apparatus for generating a phase dependent control signal 1 2009
* 2010/0007,383 METHOD AND APPARATUS FOR GENERATING A PHASE DEPENDENT CONTROL SIGNAL 5 2009
8565008 Method and apparatus for generating a sequence of clock signals 0 2011
8433023 Method and apparatus for generating a phase dependent control signal 0 2012
 
INTEL CORPORATION (1)
* 7334148 Optimization of integrated circuit device I/O bus timing 2 2004
 
MICRON TECHNOLOGY, INC. (5)
7180370 CMOS amplifiers with frequency compensating capacitors 2 2004
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7705677 CMOS amplifiers with frequency compensating capacitors 4 2008
 
NATIONAL CHUNG CHENG UNIVERSITY (1)
* 7756236 Phase detector 0 2007
 
HYNIX SEMICONDUCTOR INC. (2)
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THALES (1)
* 2010/0208,773 Auto-Calibration Filtering Device 0 2009
 
HITACHI, LTD. (2)
* 8456205 Phase-frequency comparator and serial transmission device 3 2011
* 2011/0175,648 PHASE-FREQUENCY COMPARATOR AND SERIAL TRANSMISSION DEVICE 1 2011
 
AVAGO TECHNOLOGIES GENERAL IP (SINGAPORE) PTE. LTD. (2)
* 7020793 Circuit for aligning signal with reference signal 10 2003
* 9571263 Integrated circuit incorporating a low power data retiming circuit 0 2015
* Cited By Examiner

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