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:
Jun. 18, 1996
Filed:
Jul. 05, 1995
Tuan H Bui, Phoenix, AZ (US);
Intel Corporation, Santa Clara, CA (US);
Abstract
A transform coefficient matrix is factorized in two submatrices of coefficients. One submatrix is applied to a subword formed of selected input data points and the other submatrix is applied to a subword formed of other selected input data points. This provides two sets of transformed output words. These transformed output data words are then combined. The two subwords may include, respectively, the odd data points and the even data points of the input data word. Alternately, the two subwords may include the high order data points and the low order data points. The transform performed by these operations may be the forward discrete cosine transform or the inverse discrete cosine transform. The submatrices of coefficients may be applied to differences of data points as well as to sums of data points. The differences and sums of data points may be applied to the submatrices of transform coefficients by the use of respective circular buffers.