Operation processing apparatus

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 4677582
SERIAL NO

06484846

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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An operation processing apparatus executes an instruction accompanied by addition/subtraction for one word and halfword operands at a high speed. An expander expands the sign of a second operand in its upper halfword bits to produce an expanded second operand having the same length as that of a first operand. An arithmetic unit operates the first operand and the expanded second operand.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
HITACHI, LTD.TOKYO13715

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Nagafuji, Motonobu Hadano, JP 4 112

Cited Art Landscape

Patent Info (Count) # Cites Year
 
AKAMAI TECHNOLOGIES, INC. (2)
* 2009/0132,648 CONTENT DELIVERY AND GLOBAL TRAFFIC MANAGEMENT NETWORK SYSTEM 87 2009
* 2009/0132,648 CONTENT DELIVERY AND GLOBAL TRAFFIC MANAGEMENT NETWORK SYSTEM 87 2009
 
MICRON TECHNOLOGY, INC. (1)
* 4507731 Bidirectional data byte aligner 41 1982
 
RPX CORPORATION (1)
* 2004/0133,803 Methods and apparatus for protecting information 10 2003
 
DATA GENERAL CORPORATION (1)
* 4434459 Data processing system having instruction responsive apparatus for both a basic and an extended instruction set 46 1980
 
TEXAS INSTRUMENTS INCORPORATED (1)
* 4491910 Microcomputer having data shift within memory 35 1982
* Cited By Examiner

Patent Citation Ranking

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Patent Info (Count) # Cites Year
 
Other [Check patent profile for assignment information] (2)
* 2005/0216,706 Executing partial-width packed data instructions 1 2005
* 2009/0265,409 PROCESSOR FOR PERFORMING MULTIPLY-ADD OPERATIONS ON PACKED DATA 2 2009
 
INTEL CORPORATION (19)
6970994 Executing partial-width packed data instructions 4 2001
* 2002/0010,847 Executing partial-width packed data instructions 5 2001
7424505 Method and apparatus for performing multiply-add operations on packed data 2 2001
* 2002/0059,355 Method and apparatus for performing multiply-add operations on packed data 39 2001
7430578 Method and apparatus for performing multiply-add operations on packed byte data 50 2003
7395298 Method and apparatus for performing multiply-add operations on packed data 53 2003
* 2004/0117,422 Method and apparatus for performing multiply-add operations on packed data 4 2003
* 2004/0073,589 Method and apparatus for performing multiply-add operations on packed byte data 1 2003
6925553 Staggering execution of a single packed data instruction using the same circuit 4 2003
7509367 Method and apparatus for performing multiply-add operations on packed data 0 2004
7366881 Method and apparatus for staggering execution of an instruction 2 2005
7467286 Executing partial-width packed data instructions 2 2005
8185571 Processor for performing multiply-add operations on packed data 1 2009
8626814 Method and apparatus for performing multiply-add operations on packed data 0 2011
8725787 Processor for performing multiply-add operations on packed data 0 2012
8396915 Processor for performing multiply-add operations on packed data 3 2012
8495123 Processor for performing multiply-add operations on packed data 0 2012
8793299 Processor for performing multiply-add operations on packed data 0 2013
8745119 Processor for performing multiply-add operations on packed data 0 2013
 
RPX CORPORATION (1)
* 4809166 Data assembly apparatus and method 11 1986
 
MITSUBISHI DENKI KABUSHIKI KAISHA (1)
* 5307474 Apparatus and method for processing literal operand computer instructions 1 1992
 
SAMSUNG ELECTRONICS CO., LTD. (1)
* 2007/0260,458 Subword parallelism method for processing multimedia data and apparatus for processing data using the same 0 2007
 
UNISYS CORPORATION (1)
* 5101370 Programmable digital accumulate and scale circuit 6 1990
 
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. (1)
* 5440504 Arithmetic apparatus for digital signal processor 15 1994
* Cited By Examiner