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:
Sep. 23, 2003
Filed:
Jun. 14, 1999
Applicant:
Inventors:
Changming Zhou, Tokyo, JP;
Kunihiko Suzuki, Tokyo, JP;
Assignee:
Yozan Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04L 2/706 ;
U.S. Cl.
CPC ...
H04L 2/706 ;
Abstract
A matched filter having a set of registers to successively store a digital voltage. The matched filter includes a cumulative shift register, a number of exclusive-or circuits, and an analog adder. The cumulative shift register has a number of stages in which each stage has one bit corresponding to the shift register. The exclusive-or circuits each perform an exclusive-or function on each bit of the digital data and the one bit coefficient while the analog adder sums outputs from the exclusive-or circuits.