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. 07, 1995
Filed:
Mar. 12, 1993
Aoi Kitaura, Tenri, JP;
Kenji Kawahara, Nara, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
An apparatus for performing an inverse discrete cosine transform, which reduces the number of operation times of the inverse discrete cosine transform including a row and column priority determining unit 10 for determining a priority direction of an operation at a time when a two-dimensional inverse discrete cosine transform is replaced with at least one one-dimensional inverse discrete cosine transform, one-dimensional inverse DCT operating units 11, 13 connected to the row and column priority determining unit 10 for detecting zero elements and for performing a multiply-addition according to a result of the detection, and a random access memory 12, connected to the one-dimensional inverse DCT operating units 11, 13 for storing a result of the multiply-addition performed by the one-dimensional inverse DCT operating unit 11.