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:
Jan. 26, 1999
Filed:
Aug. 05, 1997
Shinji Toyoyama, Nara, JP;
Yuichi Sato, Mie, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
A discrete cosine transformer capable of real time processing without a multiplier having small circuit scale and small power consumption includes an adder/subtractor receiving a plurality of image data items for outputting a plurality of image data item addition/subtraction values in accordance with a prescribed rule, a bit distributor connected to the adder/subtractor, receiving the plurality of image data item addition/subtraction values for outputting a plurality of bit trains consisting of bits at same bit position of the plurality of image data item addition/subtraction values, a selection signal generating circuit for successively generating a selection signal of a DCT coefficient, and a DCT coefficient generating circuit connected to the bit distributor and to the selection signal generating circuit, receiving a plurality of bit trains and responsive to the successively generated selection signal, for performing calculation of the DCT coefficient in time-divisional manner.