Apparatus for changing coefficients utilized to perform a convol

Details Apparatus for changing coefficients utilized to perform a convol Apparatus for changing coefficients utilized to perform a convol

1997-03-21

1998-01-13

An, Meng-Al T.

39542107, G06F 1204, G06F 1300

Patent

active

057088420

ABSTRACT:
A digital signal processing circuit, which is embodied by a digital signal processor (i.e., DSP), comprises at least an address counter and a coefficient RAM which is provided to store coefficients used for convolution processing to be performed. An overall storage area of the coefficient RAM exists between a first address and a last address. An external device provides control information including an initial count number and up/down information. The address counter counts a number of pulses included in a timing signal, which is produced in synchronism with bit clocks in a sampling period, so as to output a count number as a write address for the coefficient RAM. The address counter performs either an up-counting or a down-counting in accordance with the up/down information; and the count number thereof is increased or decreased from the initial count number. Hence, the coefficients sequentially inputted are written into the coefficient RAM at the respective write addresses. When the write address is increased to the last address or is decreased to the first address, the address counter outputs a carry signal, by which the coefficients inputted afterwards are not written into the coefficient RAM but are automatically transferred to the next DSP in which they are stored.

REFERENCES:
patent: Re29642 (1978-05-01), Kwiatkowski et al.
patent: 4099230 (1978-07-01), Mead
patent: 4257108 (1981-03-01), Igel
patent: 4583163 (1986-04-01), Kobayashi et al.
patent: 4604695 (1986-08-01), Widen et al.
patent: 5163018 (1992-11-01), Ikegaya et al.
patent: 5307472 (1994-04-01), Chateau et al.
David E. Borth, et al., "A Flexible Adaptive FIR Filter VLSI IC", IEEE Journal on Selected Areas in Communications, Apr. 1988, Vo. 6, No. 3, pp. 494-503.
J. O'Brien, et al.,"Digital Video & Image PRocessors A 200 MIPS Single-Chip IK FFT Processor", IEEE Internatinal Solid State Circuits Conference, Feb. 1, 1989, Vo. 32, pp. 166-167, 327.
Warner, B.H. Jr.; "Very Long Shift Registers Can be Built with RAM"; Electronic Design; vol. 25, No. 1, p. 128.
Pancost, R. & Linde, Y; "Shift Register FIFO"; Motorola Technical Development vol. 3, pp. 79-80, Mar. 1983.

Affiliated with

Also associated with

Rating

Apparatus for changing coefficients utilized to perform a convol does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Apparatus for changing coefficients utilized to perform a convol, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for changing coefficients utilized to perform a convol will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-334767