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:
May. 10, 2016
Filed:
Jan. 30, 2012
John W. Poulton, Chapel Hill, NC (US);
Thomas Hastings Greer, Iii, Chapel Hill, NC (US);
William J. Dally, Los Altos Hills, CA (US);
John W. Poulton, Chapel Hill, NC (US);
Thomas Hastings Greer, III, Chapel Hill, NC (US);
William J. Dally, Los Altos Hills, CA (US);
NVIDIA Corporation, Santa Clara, CA (US);
Abstract
One embodiment of the present invention sets forth a mechanism for transmitting and receiving differential signals. A transmitter combines a direct current (DC) to DC converter including a capacitor with a 2:1 multiplexer to drive a pair of differential signaling lines. The transmitter drives a pair of voltages that are symmetric about the ground power supply level. Signaling currents are returned to the ground plane to minimize the generation of noise that is a source of crosstalk between different differential signaling pairs. Noise introduced through the power supply is correlated with the switching rate of the data and may be reduced using an equalizer circuit.