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. 29, 1992
Filed:
Sep. 11, 1990
Mark Medlicott, Illkirch, FR;
Alcatel Business Systems, Paris, FR;
Abstract
A dual-mode synchronization device is designed in particular to recover the phase of the frame clock in a half-duplex transmission system. It is included in a receiver in a half-duplex digital transmission system in which a receiver receives frames only at regular intervals. The device comprises an energy sensing phase locking first system and a phase recovery second system which senses a reference pattern. A selector system selects one of the phase difference indications supplied by the first and second systems, under the control of a respective binary indication of loss or acquisition of synchronization. A particular application of the invention is to half-duplex transmission using the WAL2 code.