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:
Apr. 02, 2002
Filed:
Jul. 23, 1998
Clarion Co., Ltd., Tokyo, JP;
Abstract
A spread spectrum communication system including a transmission side for transmitting a frame-structured transmission signal containing at least one preamble (having information on a transmission destination) and data subsequent to the preamble(s) while spread-spectrum-modulating the transmission signal with a PN code, and a reception side having a correlator for performing correlation between the PN code of the transmission signal and a reference PN code and a PN code generator for generating the reference PN code. At the reception side, the PN code of the preamble of the transmission signal and the reference PN code are correlated with each other to obtain correlation peaks, and the periodicity of the correlation peaks is detected and a prescribed number of correlation peaks is counted, thereby identifying the transmission signal as being addressed to the receiver.