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:
May. 06, 1986
Filed:
Mar. 04, 1983
Leonard N Schiff, Lawrenceville, NJ (US);
RCA Corporation, Princeton, NJ (US);
Abstract
A low-power, spread spectrum synchronized communication system employing a satellite which continuously and iteratively re-transmits a PRS signal PRS.sub.m from a master earth station having a chip rate C.sub.m and a bit rate B.sub.m and comprising a plurality of ground stations each including a transmitter for transmitting a first PRS signal (PRS.sub.G) unique thereto and having a first chip rate C.sub.G and a first bit rate B.sub.G and a receiver for receiving and identifying PRS.sub.G after being returned by the satellite as PRS.sub.Gr with a chip rate C.sub.Gr and a bit rate B.sub.Gr. Also provided is a phase difference detector responsive to C.sub.m and C.sub.Gr to periodically produce a signal representative of the change of phase difference thereof and a frequency changing circuit responsive to such signal to change the chip rate C.sub.Gr by an amount which will cause the phase of C.sub.Gr to approach the phase of C.sub.m at a given rate.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile