US Patent No: 6,879,654

Number of patents in Portfolio can not be more than 2000

Non-integer frequency divider circuit

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ALSO PUBLISHED AS: 20040213369
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Importance

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Abstract

A non-integer frequency divider is disclosed. The non-integer frequency divider circuit includes several base stages connected to each other. The non-integer frequency divider circuit also includes a clocking circuit for passing an enable bit from one of the base stages to another such that only one of the base stages is enabled at any give time. The enable bit has a pulse width of one clock cycle. The outputs from the base stages are grouped together by an OR gate to generate a single output that is a fraction of an input clock signal.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
INTERNATIONAL BUSINESS MACHINES CORPORATIONARMONK, NY68180

International Classification(s)

  • [Classification Symbol]
  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Austin, John S Winooski, VT 20 147

Cited Art

Patent Info (Count) # Cites Year
 
ADVANCED MICRO DEVICES, INC. (1)
6,121,801 Non-integer clock divider 12 1997
 
ALCATEL NETWORK SYSTEMS, INC. (1)
4,348,640 Divide by three clock divider with symmertical output 17 1980
 
INTERNATIONAL BUSINESS MACHINES CORPORATION (1)
5,774,511 Processor clock circuit 11 1996
 
LUCENT TECHNOLOGIES INC. (1)
6,157,694 Fractional frequency divider 45 1998
 
RCA CORPORATION (1)
4,477,918 Multiple synchronous counters with ripple read 10 1981
 
SGS-THOMSON MICROELECTRONICS S.A. (1)
5,448,191 Frequency synthesizer using noninteger division and phase selection 37 1994
 
TELASIC COMMUNICATIONS (1)
4,975,931 High speed programmable divider 21 1988
 
U.S. PHILIPS CORPORATION (1)
4,295,158 Digital frequency divider 10 1979

Patent Citation Ranking

Forward Cites

Patent Info (Count) # Cites Year
 
HYNIX SEMICONDUCTOR INC. (3)
7,760,847 Counting circuit and address counter using the same 0 2008
8,023,614 Counting circuit and address counter using the same 0 2010
8,165,263 Counting circuit and address counter using the same 0 2011
 
FREESCALE SEMICONDUCTOR, INC. (1)
8,093,929 Programmable digital clock signal frequency divider module and modular divider circuit 0 2010
 
INTERNATIONAL BUSINESS MACHINES CORPORATION (1)
7,444,534 Method and apparatus for dividing a digital signal by X.5 in an information handling system 1 2006
 
NEC CORPORATION (1)
8,081,017 Clock signal frequency dividing circuit and clock signal frequency dividing method 1 2007
 
XILINX, INC. (1)
7,149,275 Integrated circuit and method of implementing a counter in an integrated circuit 7 2004

Maintenance Fees

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11.5 Year Payment $7400.00 $3700.00 $1850.00 Oct 12, 2016
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