The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 10, 1996
Filed:
Dec. 27, 1994
Yoshifumi Matsumoto, Osaka, JP;
Masaki Toyokura, Minoo, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
The two-dimensional DCT (discrete cosine transform) of plural n.times.n data items is carried out at high speed, with requiring less hardware. X(h) is an operation in which row vectors of A(h) are sequentially transmitted from a first memory to a one-dimensional DCT processor for product-of-matrices computations and the products thus found are sequentially written to at addresses of corresponding row vectors of B(h) of a second memory. Y(h) is an operation in which column vectors of B(h) are sequentially transmitted from the second memory to the one-dimensional DCT processor for product-of-matrices computations and the products thus found are sequentially written to at addresses of corresponding column vectors of C(h) of the first memory. The operation X(h) starts at h=1 and ends at h=m. Then, the operation Y(h) starts at h=1 and ends at h=m. The one-dimensional DCT processor performs the pipelining operation of n-element one-dimensional vectors for product-of-matrices computations.