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:
Jun. 21, 1988
Filed:
Aug. 07, 1987
Kenneth Martinez, Pinellas Park, FL (US);
William L Betts, St. Petersburg, FL (US);
Paradyne Corporation, Largo, FL (US);
Abstract
In a system encompassing the transmission of high speed data over a communication channel, a circuit provides information as to whether the modems of the system are in synchronism. The circuit first determines the number of points being received within a given time at a certain inner location in the signal constellation and at another certain outer location in the signal constellation. The circuit includes an up/down counter which is incremented for each inner point received by the circuit and decremented for each outer point received. The counter output is conveyed to a comparator which determines whether the counter output has reached a preselected threshold. At the time that the counter output reaches the preselected threshold, the comparator outputs a signal which is indicative of the fact that the modems of the system are out of synchronism and retraining of the system is required.