Pulse or digital communications – Bandwidth reduction or expansion – Television or motion video signal
Reexamination Certificate
2005-05-31
2010-10-19
Philippe, Gims S (Department: 2621)
Pulse or digital communications
Bandwidth reduction or expansion
Television or motion video signal
C382S236000
Reexamination Certificate
active
07817719
ABSTRACT:
An adaptation of the sum-of-absolute-differences (SAD) calculation is implemented by modifying existing circuitry in a microprocessor. The adaptation yields a reduction of over 30% for a current SAD calculation. The adaptation includes a first and second operand register, each storing respectively a first and second set of 2's complement binary data, an arithmetic logic unit (ALU), and a destination register. An add/subtract enable input on the ALU receives a most significant bit (MSB) of the second set of binary data. The ALU adds the first and second data sets if the MSB is a “0” and subtracts the second data set from the first data set if the MSB is a “1.” The add/subtract enable input has the effect of taking the absolute value of the second data set without having to first perform an absolute value determination, thus eliminating processing steps.
REFERENCES:
patent: 4422143 (1983-12-01), Guttag
patent: 4648059 (1987-03-01), Gregorcyk
patent: 4761759 (1988-08-01), Nakagawa
patent: 4814976 (1989-03-01), Hansen et al.
patent: 4849921 (1989-07-01), Yasumoto et al.
patent: 4953115 (1990-08-01), Kanoh
patent: 5148386 (1992-09-01), Hori
patent: 5305249 (1994-04-01), Yoshida
patent: 5379351 (1995-01-01), Fandrianto et al.
patent: 5485411 (1996-01-01), Guttag et al.
patent: 5563813 (1996-10-01), Chen et al.
patent: 5610850 (1997-03-01), Uratani et al.
patent: 5793655 (1998-08-01), Harlap et al.
patent: 5835389 (1998-11-01), Wong
patent: 5944771 (1999-08-01), Shiraishi
patent: 5957996 (1999-09-01), Shiraishi
patent: 6219688 (2001-04-01), Guttag et al.
patent: 6421698 (2002-07-01), Hong
patent: 6473529 (2002-10-01), Lin
patent: 6556716 (2003-04-01), Hong
patent: 2001/0046264 (2001-11-01), Fandrianto et al.
patent: 2005/0027969 (2005-02-01), Simon et al.
patent: WO-2006013023 (2006-12-01), None
patent: WO-2006130323 (2006-12-01), None
“Application Serial No. PCT/US2006/018310, International Search Report mailed Jul. 26, 2007”, 1 pg.
Pedersen Ronny
Renno Erik K.
Strom Oyvind
Atmel Corporation
Philippe Gims S
Schwegman Lundberg & Woessner, P.A.
LandOfFree
System for increasing the speed of a... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with System for increasing the speed of a..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System for increasing the speed of a... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4189599