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:
Aug. 21, 2001
Filed:
Jun. 17, 1998
Thierry Fensch, Grenoble, FR;
SGS-Thomson Microelectronics S.A., Gentilly, FR;
Abstract
The present invention relates to a master transceiver circuit meant to be coupled by a telephone line to a slave transceiver circuit, the master circuit including a digital phase-locked loop for reconstructing a clock from an incoming bit flow, the phase difference between the reconstructed clock and an internal clock corresponding to the content of a phase counter of the phase-locked loop. The circuit includes a bit counter clocked by the internal clock, initialized upon transmission of a predetermined signal, and stopped upon detection of the return of the predetermined signal transmitted back by the slave transceiver circuit; and means for calculating the delay introduced by the telephone line based on the contents of the phase and bit counters.