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. 09, 1999
Filed:
Jul. 22, 1996
Yoshifumi Fujikawa, Yokohama, JP;
Keiji Kojima, Sagamihara, JP;
Kiyokazu Nishioka, Odawara, JP;
Tohru Nojiri, Shinjuku-ku, JP;
Kazuhiko Tanaka, Fujisawa, JP;
Masao Ishiguro, Yokohama, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
An object of the present invention is to provide a processor which can execute calculation between data of a data length larger than the data length of the register file at high speed without the cost of the hardware being increased so much and the first long register 12 and the second long register 13 having a bit width which is two times of the bit width of the register file and the long register update device 14 for updating the data of the second long register 13 partially are installed between the register file 2 and the pixel calculator 11. When the long register update pixel calculation instruction is stored in the instruction register 31, the long register update device 14 connects a part of the data of the second long register 13 and a part of data read from the register file 2 and sends them to the pixel calculator 11 and the second long register 13 via the selector 15. The pixel calculator 11 executes calculation between the data of the first long register 12 and the data given from the selector 15.