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. 16, 2004
Filed:
Jan. 13, 2000
Applicant:
Inventors:
Ichiro Imaizumi, Tokyo, JP;
Osamu Sato, Tokyo, JP;
Hisashi Kawai, Tokyo, JP;
Tetsuhiko Miyatani, Tokyo, JP;
Takahiro Todate, Tokyo, JP;
Kouya Hoshina, Tokyo, JP;
Assignee:
Kokusai Electric Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B 1/707 ;
U.S. Cl.
CPC ...
H04B 1/707 ;
Abstract
There is disclosed a synchronous circuit and a receiver in which a long code for use in communication can be determined in a short time, and circuit scale can be reduced. Upon receiving input of a data stop signal from a control unit, a matched filter continues to hold the signal held at the time, performs a product sum operation of a spreading code successively inputted from a spreading code generator and the held signal, and successively outputs correlation signals in the synchronous circuit and the receiver.