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:
Oct. 13, 1981
Filed:
Feb. 08, 1980
Jean-Pierre H Van Uffelen, Chevilly Larue, FR;
Abstract
This arrangement for restituting the clock is used to sample the demodulated signals formed by demodulation of the received signal by means of the signals which are in phase with and shifted through 90.degree. relative to a local carrier. The arrangement according to the invention comprises logic circuit to detect to which phase section out of n possible phase sections of the transmitted signals the phase of the received signal belongs at the sampling instants, and calculation to form the component which is in phase or shifted through 90.degree., of a signal derived from the received signal by means of a phase shift .DELTA..theta. to make its phase equal, at the sampling instants, to the center phase of the detected phase section. The zero-passages of this component are used to control the local clock.