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:
Dec. 02, 2008
Filed:
Aug. 31, 2005
Kazufumi Tanoue, Osaka, JP;
Daisuke Takeuchi, Osaka, JP;
Tomoko Chiba, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
When a barrel shift device is divided into pipeline registers and a shift process is executed in a multistage process stage, by decoding a second control signal for controlling a shift amount of a second shift circuitusing a decoding circuitit is detected at what digit positions in intermediate data in an intermediate data holding circuitdata elements which are to be finally output as output data from the second shift circuitare located. Based on a result of the detection of digit positions by the decoding circuitthe intermediate data holding circuitholds only data elements to be finally output, among data elements in the intermediate data, and does not hold unnecessary data elements which are not included in the output data. Therefore, by controlling a data storage operation in the intermediate data holding circuitan increase in power due to the pipeline structure is suppressed.