US Patent No: 5,341,492

Number of patents in Portfolio can not be more than 2000

Frame conversion circuit including initial value input circuit

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Abstract

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A frame conversion circuit for changing data with different speeds to the same speed to thereby obtain data of the same frame length is provided with an initial value inputting circuit for writing an arbitrary initial value into a memory at each address each time data is sequentially read out according to a read address signal from the memory. Therefore, no error is produced in a sign bit check and the possibility of occurrence of erroneous synchronization is minimized. The initial value inputting circuit may be implemented using a plurality of pull-up resistors connected to a data bus.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
FUJITSU LIMITEDKAWASAKI23231

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Sakata, Tatsumi Fukuoka, JP 1 10

Cited Art Landscape

Patent Info (Count) # Cites Year
 
HEWLETT-PACKARD COMPANY (1)
4,186,379 High-speed data transfer apparatus 7 1977
 
Trio Kabushiki Kaisha (1)
4,873,684 Method and apparatus for multiplexing of input signals having differing frequencies and demultiplexing same 13 1988

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
MICRONAS GMBH (5)
7,085,320 Multiple format video compression 11 2001
7,219,173 System for video processing control and scheduling wherein commands are unaffected by signal interrupts and schedule commands are transmitted at precise time 6 2001
7,184,101 Address generation for video processing 1 2002
7,142,251 Video input processor in multi-format video compression system 11 2002
7,432,988 Address generation for video processing 0 2007
 
U.S. Philips Corporation (2)
6,172,710 Frame converter for asynchronous video signals 3 1998
6,317,160 Frame conversion for asynchronous input image signals 2 1998
 
ADVANTEST CORPORATION (1)
5,854,801 Pattern generation apparatus and method for SDRAM 7 1998
 
INTERNATIONAL BUSINESS MACHINES CORPORATION (1)
5,467,350 Conversion of ISDN LAPB and ISDN LAPD frames 4 1993
 
MOTOROLA MOBILITY LLC (1)
5,534,937 Minimum-delay jitter smoothing device and method for packet video communications 84 1994