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:
Nov. 02, 1999
Filed:
Sep. 18, 1997
Eiji Tsuboi, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
A two-dimensional inverse discrete cosine transformation circuit of an MPEG2 video decoder including a one-dimensional inverse discrete cosine transformation circuit, an input switching circuit for receiving input of new data and data already subjected to first one-dimensional inverse discrete cosine transformation and sending one of them to the one-dimensional inverse discrete cosine transformation circuit, an input switching control circuit for controlling the input switching circuit so as to alternately and continuously output data output from a first serial-parallel conversion circuit and data output from a second serial-parallel conversion circuit, and a data allocation circuit for switching and controlling an output destination of output data of the one-dimensional inverse discrete cosine transformation circuit based on the timing of switching by the input switching control circuit.