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:
Oct. 18, 2005
Filed:
May. 21, 2001
Applicants:
David Beryl Lazarus, Elkins Park, PA (US);
Yucheng Jin, Chalfont, PA (US);
Inventors:
David Beryl Lazarus, Elkins Park, PA (US);
Yucheng Jin, Chalfont, PA (US);
Assignee:
General Instrument Corporation, Horsham, PA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04J003/06 ;
U.S. Cl.
CPC ...
Abstract
A broadband terminal interface unit for use in an HFC communication network includes a phase-locked loop for providing a smooth transition between a CMTS-provided 'national' clock and a local clock when the CMTS clock is lost (or before it is required). By controlling the tracking range of the PLL, the sensitivity of the circuit is controlled so that some drift in the national clock can be accommodated without unnecessarily reducing the performance of the components within the broadband terminal interface unit.