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:
Mar. 29, 2011
Filed:
Jun. 26, 2008
Shingo Kazuma, Tokyo, JP;
Shingo Kazuma, Tokyo, JP;
Oki Semiconductor Co., Ltd., Tokyo, JP;
Abstract
An instruction code compression method and an instruction fetch circuit which are capable of reducing both the number of fetches and program codes. A reuse flag is provided in an upper bit group including operational codes, and a lower bit group including operands and having the same number of bits as the upper bit group. When 2N+1 (N is an integer of 1 or more) instruction codes having the same upper bit group continues in a series of instruction codes, respective reuse flags of the lower bit group of a 2n-th (n is an integer of 1 or more and N or less) instruction code and a (2n+1)-th instruction code in the series of instruction codes are set to '1', and the lower bit groups of the 2n-th and (2n+1)-th instruction codes are integreted into one compressed instruction code.