Electrical computers: arithmetic processing and calculating – Electrical digital calculating computer – Particular function performed
Patent
1997-12-15
2000-09-19
Mai, Tan V.
Electrical computers: arithmetic processing and calculating
Electrical digital calculating computer
Particular function performed
708303, G06F 1710
Patent
active
06122653&
ABSTRACT:
A block infinite impulse response (IIR) processor has a first input register storing data of the block length "L" and capable of shifting the stored data by an integer times the data word length, a first coefficient register file, a second input register, a second coefficient register file, a third input register, a third coefficient register file, a register, a shift register, an accumulator and a multiply-and-accumulate unit for multiplying respective data blocks in the register by a least significant word in the shift register, and for adding the result of the multiplication to a value of the accumulator, for executing a parallel operation of "L" multiply-and-accumulate operations. Thus, by adopting the block IIR filter algorithm which makes it possible to simultaneously calculate a plurality of samples in a processor having a divided-ALU instructions for executing a plurality of multiply-and-accumulate operations in parallel to one another, the filter operation can be speeded up by use of the parallel arithmetic operation. The operation can be also speeded up by reducing the number of multiply-and-accumulate operations in accordance with the order of the filter because of the nature of coefficients.
REFERENCES:
patent: 5319584 (1994-06-01), Ooyabu
patent: 5636150 (1997-06-01), Okamoto
"MC88110 Second Generation RISC Microprocessor User's Manual", Motorola Inc., pp. 5-1 to 5-26, 1991.
Jackson, "Digital Filters and Signal Processing", Kluwer Academic Publishers, 1986, pp. 229-234.
Craig Hansen, "Architecture of a Broadband Mediaprocessor", 1996, pp. 334-340.
Curtis Abbott,"Broadband Algorithms with the MicroUnity Mediaprocessor", 1996, pp. 349-354.
Mai Tan V.
NEC Corporation
LandOfFree
Block IIR processor utilizing divided ALU operation instructions does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Block IIR processor utilizing divided ALU operation instructions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Block IIR processor utilizing divided ALU operation instructions will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1083501