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. 08, 2000
Filed:
Dec. 16, 1996
Applicant:
Inventor:
Norio Suzuki, Hamamatsu, JP;
Assignee:
Yahama Corporation, Shizuoka-ken, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
711147 ; 84630 ;
Abstract
In each sampling period, sample data and a count value WA of a ring buffer counter 11 are supplied to a RAM 202 through a bus control circuit 14 as write data and a write address. Each cache block stored in a data buffer DB.sub.0 and so on is used for executing an FIR filtering operation. As an amount of unused sample data in the cache block is decreased, subsequent cache blocks used for a subsequent FIR filtering operation are supplemented to the data buffers DB.sub.0 and so on by the cache counter units CC.sub.0 and so on.