Method and apparatus for low jitter clock recovery in wireless display extensions

US9723342B2 · kind B2 · utility

Assignee

• Intel Corporation · US

Inventors

• Guoqing Li · Campbell, US
• Joseph A. Bennett · Roseville, US
• Gideon Prat · Haifa, IL
• Solomon Trainin · Haifa, IL
• Sang-Hee Lee · Santa Clara, US
• Vallabhajosyula Z. Somayazulu · Portland, US
• George R. Hayek · Cameron Park, US
• Pat Brouillette · Tempe, US
• Dmitrii Loukianov · Chandler, US

Key dates

• Filing date: Dec 21, 2011
• Grant date: Aug 1, 2017
• Expiry date: Feb 2, 2032

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04N21/6131
• WIPO field: Audio-visual technology
• WIPO sector: Electrical engineering

Abstract

An approach is provided for determining a program clock reference (PCR) value validity, for avoiding inaccurate variable delay reference (VDR) values, and for avoiding a mismatch in a data packet between a sequence number and a packet number for a wireless display extension. The approach involves determining to generate a data packet carrier having an optional PCR value, a VDR) value, and a validity indicator. The approach may further involve processing the data packet carrier to determine whether the data packet carrier has the optional PCR value. The approach may also involve causing, at least in part, a surrogate PCR value to be generated based, at least in part, on a determined absence of the optional PCR value from the data packet carrier.