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. 21, 1981
Filed:
Jun. 18, 1979
Pierre Deman, Paris, FR;
Thomson-CSF, Paris, FR;
Abstract
An apparatus for synchronization in digital transmission makes it possible to control a clock circuit on the basis of the timing of a digital message having indexing bits followed by information bits. For this purpose it contains a control system, including a clock circuit, with an input connected either to the input or the output of a delay line by means of a switching system. The phase control begins with the first indexing bit received at the input of the delay line. When this control is established the input of the control system is connected to the output of the delay line. This connection brings the clock into operation on the basis of the control established and then sets off a 'follow-up' operation as soon as the first indexing bit reaches the output of the delay line.