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:
Aug. 19, 2014
Filed:
Jun. 26, 2009
Masakazu Ehama, Sagamihara, JP;
Koji Hosogi, Hiratsuka, JP;
Masakazu Ehama, Sagamihara, JP;
Koji Hosogi, Hiratsuka, JP;
Renesas Electronics Corporation, Kawasaki-shi, JP;
Abstract
The present invention provides a technique for changing the number of taps in filter processing without the need for execution of branch processing. A filter processing device comprises: an arithmetic circuit that performs arithmetic processing for filtering operation; an internal register that retains data to be subjected to arithmetic processing in the arithmetic circuit and that receives the result of arithmetic processing from the arithmetic circuit as data to be written back thereto; and a data generator that generates data to be fed to the arithmetic circuit through use of the data retained in the internal register. Further, in the filter processing device, there is disposed a tap number control circuit that is capable of controlling the number of taps in filter processing according to a tap control signal applied thereto. In this configuration, no branch processing is required for controlling the number of taps by the use of the tap number control circuit.