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:
Jul. 01, 2008
Filed:
Jun. 30, 2005
Masaki Maeda, Osaka, JP;
Hiroyuki Morishita, Toyonaka, JP;
Takeshi Tanaka, Moriguchi, JP;
Tokuzo Kiyohara, Osaka, JP;
Masaki Maeda, Osaka, JP;
Hiroyuki Morishita, Toyonaka, JP;
Takeshi Tanaka, Moriguchi, JP;
Tokuzo Kiyohara, Osaka, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A processor system includes a main processor having registers and an instruction decode control unit, and a coprocessor. When the main processor performs an operation in accordance with an instruction, the registers store data to be used for the operation and data obtained by the operation, and the control unit sequentially decodes an instruction, and performs a control based on the instruction. When decoding a coprocessor operation instruction to request the coprocessor to perform an operation, which includes operands designating a type of an operation to be performed by the coprocessor, a first register storing data to be used for the operation, and a second register to store data obtained by the operation, the control unit requests the coprocessor to perform the designated type of operation by using a content in the first register, and causes the second register to store a result of the operation.