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:
Dec. 17, 1985
Filed:
Oct. 14, 1983
Applicant:
Inventors:
Kazutoshi Kan, Ibaraki, JP;
Junichi Oizumi, Ibaraki, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L / ;
U.S. Cl.
CPC ...
375-1 ; 370 18 ;
Abstract
A spread-spectrum communication system includes a transmitter for transmitting a spectrum-spread signal and a receiver for receiving the data signal. To establish synchronism between the signals transmitted and received, the receiver includes a first loop circuit for establishing synchronism in frequency and phase of a carrier for the spectrum-spread data signal, and a second loop circuit for detecting the synchronism of spectrum spreading code signal of a spectrum spread data signal after the carrier has been removed by said first loop circuit.