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:
Dec. 09, 2008
Filed:
Feb. 23, 2004
Erik Berg, Laguna Beach, CA (US);
Gopal Venkatesan, Aliso Viejo, CA (US);
Hosahalli Srinivas, Irvine, CA (US);
Amy Hundhausen, Laguna Beach, CA (US);
Erik Berg, Laguna Beach, CA (US);
Gopal Venkatesan, Aliso Viejo, CA (US);
Hosahalli Srinivas, Irvine, CA (US);
Amy Hundhausen, Laguna Beach, CA (US);
Broadcom Corporation, Irvine, CA (US);
Abstract
An integrated digital BTSC encoder with an improved pilot signal generator substantially implemented on a single CMOS integrated circuit is described. By digitally generating a sinusoid that is frequency locked to a two-state input reference signal using a high rate internal clock, a hardware-efficient BTSC pilot signal generator is provided with good acquisition and tracking performance. Implemented efficiently as a simple phase detector, a low-complexity loop filter, a pilot frequency offset adder, a phase accumulator and a sinusoidal generator, the invention enables lower-rate post-processing of the pilot tone without a costly variable interpolator decimator structures.