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:
Nov. 08, 2016
Filed:
Aug. 29, 2013
Advanced Micro Devices, Inc., Sunnyvale, CA (US);
Xin Liu, El Dorado Hills, CA (US);
Hai Nguyen, Los Altos, CA (US);
Advanced Micro Devices, Inc., Sunnyvale, CA (US);
Abstract
A system and method for efficient detection of Low Frequency Periodic Signaling (LFPS) input signals. A receiver receives two input differential signals that are LFPS input signals. The receiver increases the common-mode voltage for each of the two input differential signals and determines two polarity opposite differences between the level shifted intermediate differential signals. The differences are used to generate two series of relatively narrow pulses by comparisons with a given threshold. A wide continuous pulse is asserted when an initial pulse among the two series of pulses is detected. The wide continuous pulse is deasserted when a final pulse among the two series of pulses is detected. While the wide continuous pulse is asserted, control logic is awakened and performs a Universal Serial Bus (USB) protocol for processing data on the input differential signals.