Discrete cosine transform calculation processor

Details Discrete cosine transform calculation processor Discrete cosine transform calculation processor

1985-03-08

1987-06-23

Malzahn, David H.

Boots, shoes, and leggings

G06F 15332

Patent

active

046758364

ABSTRACT:
A discrete cosine transform calculation processor, suitable for compressing a television signal, comprises a processor module consisting of four successive stages. The first stage, the input stage of the module, comprises a first adder/subtracter. The second stage comprises a second adder/subtracter with two input buses each selectively connected to an output bus of the first stage or to an output bus of an input register of the second stage, loaded from an output bus of the first or fourth stage. The third stage comprises a multiplier connected to a cosine/sine function value store and to an output bus of the second stage. The fourth stage, the module output stage, comprises a third adder/subtracter with two input buses each selectively connected to an output bus of the third stage or to an output bus of an input register of this stage loaded from the multiplier.

REFERENCES:
patent: 4196448 (1980-04-01), Whitehouse et al.
patent: 4288858 (1981-09-01), Merola et al.
patent: 4293920 (1981-10-01), Merola
patent: 4385363 (1983-05-01), Widergren et al.
patent: 4449194 (1984-05-01), Wilhelm
Nussbaumer, "Fast Multidimensional Discrete Cosine Transforms" IBM Tech. Disclosure Bulletin, vol. 23, No. 5, Oct. 80, pp. 1976-1981.
Nussbaumer, "Improved Approach for the Computation of Multidimensional Cosine Transforms" IBM Tech. Discl. Bulletin, vol. 23, No. 10, Mar. '81, pp. 4517-4521.
IEEE Transactions on Communications, vol. COM-25, No. 9, Sep. 1977, W. H. Chen et al., "A Fast Computational Algorithm for the Discrete Cosine Transform", pp. 1004-1009.
IEEE Transactions on Electromagnetic Compatibility, vol. EMC-24, No. 2, May 1982, A. Jalali et al.: "A High Speed FDCT Processor for Real Time Processing of NTSC Color TV Signal", pp. 278-286.
IEEE Transactions on Computers, vol. C-31, No. 9, Sep. 1982, F. A. Kamangar et al., "Fast Algorithsm for the 2-D Discrete Cosine Transforms", pp. 899-906.

Affiliated with

Also associated with

Rating

Discrete cosine transform calculation processor does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Discrete cosine transform calculation processor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Discrete cosine transform calculation processor will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-726271