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:
Jul. 12, 2011
Filed:
Mar. 24, 2010
Kouros Azimi, Center Valley, PA (US);
Mohammad S. Mobin, Orefield, PA (US);
Gregory W. Sheets, Breinigsville, PA (US);
Lane A. Smith, Easton, PA (US);
Kouros Azimi, Center Valley, PA (US);
Mohammad S. Mobin, Orefield, PA (US);
Gregory W. Sheets, Breinigsville, PA (US);
Lane A. Smith, Easton, PA (US);
Agere Systems Inc., Allentown, PA (US);
Abstract
Disclosed is a circuit that adjusts a characteristic of a signal transmitted from a transmitter to a receiver over a communication channel (e.g., a wire, a backplane, etc.). The circuit includes a latch that receives the signal at a predetermined point in the circuit and samples a voltage of the signal many times after a threshold voltage is applied to the latch. The circuit also includes a processor that determines the characteristic of the signal when the sampled voltages indicate a transition point and that adjusts the threshold voltage when the sampled voltages do not indicate a transition point. The processor adjusts the characteristic of the signal by adjusting at least one of a current and a voltage of the transmitter when the characteristic of the signal is outside a predetermined range.