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:
Feb. 06, 2001
Filed:
Mar. 10, 1998
Other;
Abstract
One multiplier,operated at a normalized frequency,is provided to multiply the elements of DCT transformation coefficients and the elements of input data, and the multiplication results are added by a cumulative adder,to determine cumulative addition results corresponding to the sum (x,+x,) and the difference (x,−x,) of a pair of elements (x,x,) of data to be outputted from a one-dimensional DCT operation circuit,The paired cumulative addition results are added and subtracted by an adder,and a subtracter,respectively, to determine the elements (x,x,). The operations are performed specific times the number of which is one half of the number of elements of a column of the matrix of the input data to determine the elements of a column of the matrix of the output data and are performed specific times the number of which is equal to the number of elements of a row of the matrix or the input data to determine all the elements of the matrix of the output data. As a result, the scale of the DCT operation circuit is reduced, thereby reducing the power consumption.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile