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.

Date of Patent:
Jun. 05, 2001

Filed:

Oct. 08, 1999
Applicant:
Inventors:

James Liu, San Jose, CA (US);

Wen Fang, San Jose, CA (US);

Wen-Chung Wu, Cupertino, CA (US);

Assignee:

Altima Communication, Inc., Irvine, CA (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03L 5/00 ; H03K 5/01 ;
U.S. Cl.
CPC ...
H03L 5/00 ; H03K 5/01 ;
Abstract

Circuits for the restoration of a drooped signal are disclosed. In the asynchronous mode circuit, the drooped signal can be restored by detecting the peak of the positive amplitude and the peak of the negative amplitude and take the difference between the two peaks. This difference signal is fed back the equalizer. In the synchronous mode circuit, the drooped signal is sliced and passed to a regeneration circuit. The regeneration circuit uses reference voltage signals and phase information from the slicer to generate a regenerated signal. The regenerated signal is compared with the equalized signal to generate a difference signal, again fed back to the equalizer. The sliced signal is also fed to a clock recovery circuit which recovers the clock signal embedded in the received signal. The two circuits can be combined to provide an optimal circuit for the restoration of a drooped signal.


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