Patent · US Active

Method and apparatus for on-chip voltage controlled oscillator function

US8165199B2 · kind B2 · utility

2Cited by

4References

4Claims

0Family size

Assignee

TEXAS INSTRUMENTS INCORPORATED · US

Inventors

Liming Xiu · Plano, US
Grady Cook · Plano, US
Daniel Dudek · Salzweg, DE
Hongbing Lian · Plano, US
Yihe Hu · Frisco, US
Christopher S. Tracy · Frisco, US

Key dates

Filing date	Oct 20, 2008
Grant date	Apr 24, 2012
Priority date	—
Expiry date	Feb 23, 2031

Classification

Technology area (CPC H)Electricity
CPC primaryH04N21/434
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

This invention uses a flying adder frequency synthesis circuit to provide the required frequency adjustments to accommodate the varying encoding density of a MPEG2 video data stream. This invention adjusts the local clock based on the information extracted from the program clock reference signal in the incoming data. This invention replaces an external or internal voltage-controlled crystal oscillator using a phase locked loop circuit on the video processing integrated circuit.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.