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. 30, 2013
Filed:
Jun. 18, 2009
John M. Wilson, Raleigh, NC (US);
Aliazam Abbasfar, Menlo Park, CA (US);
John Eble, Iii, Chapel Hill, NC (US);
Lei Luo, Durham, NC (US);
Jade M. Kizer, Durham, NC (US);
Carl William Werner, Los Gatos, CA (US);
Wayne Dettloff, Cary, NC (US);
John M. Wilson, Raleigh, NC (US);
Aliazam Abbasfar, Menlo Park, CA (US);
John Eble, III, Chapel Hill, NC (US);
Lei Luo, Durham, NC (US);
Jade M. Kizer, Durham, NC (US);
Carl William Werner, Los Gatos, CA (US);
Wayne Dettloff, Cary, NC (US);
Rambus Inc., Sunnyvale, CA (US);
Abstract
A data systempermits bus encoding based on frequency of the bus; an encoding scheme may be implemented to avoid undesirable frequency conditions such as a resonant condition that may lead to degradation in system performance. The device or integrated circuit will typically include an encoder; in one embodiment, the encoder is a data bus inversion (DBI) circuit that selectively inverts all lines of a data bus. A detector that may include a band-pass or stop-band filter that, for example, evaluates data for transmission on the bus to detect frequency, for example, a predetermined frequency or a frequency range. The detector provides a control signal for the encoder to selectively apply an encoding scheme as a function of frequency.