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. 28, 1999
Filed:
Jan. 31, 1997
Applicant:
Inventor:
Hidenori Maruyama, Tokyo, JP;
Assignee:
NEC Corporation, , JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04B / ; H04K / ; H04L / ;
U.S. Cl.
CPC ...
375200 ; 375326 ;
Abstract
A correlator 1 and an amplitude detection section 2 detect a correlation value of a spectrum spread signal. A maximum value detection section 5 detects a maximum correlation value for each symbol, which is then sequentially added by an adder section 6. A carrier detection section 4 compares the added value with a threshold value so as to detect presence/absence of carrier.