NCO based timebase recovery system and method for A/V decoder
AssigneeBroadcom Corporation
InventorBrian Schoner
Life of this patent
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Abstract
Systems and methods are disclosed for recovering a clock or time reference for A/V systems. One method comprises receiving at least one input time reference generated using a first clock and generating, using a second clock asynchronous to the first clock, at least one time reference value representative of the at least one input time reference. The method further comprises outputting the generated time reference value used by the A/V system.
Claims20
A method for recovering a time reference in an A/V system comprising:
- (a) receiving at least one input time reference generated using a first clock;
- (b) generating, using a second clock that is asynchronous to said first clock, at least one time reference value representative of said at least one input time reference;
- (c) outputting said at least one generated time reference value.
A method of processing data in a data stream using an A/V decoder comprising:
- (a) receiving at least one input time reference value from the data;
- (b) generating at least one system time reference value;
- (b) comparing said system time reference value to said input time reference value;
- (c) locking said system time reference value to said input time reference value, forming at least one recovered system time reference value;
- and
- (d) outputting said recovered system time reference value.
A time reference recovery device comprising:
- a comparator adapted to receive at least one timebase value from an input stream;
- and
- a numerically controlled oscillator adapted to lock at least one recovered timebase signal to said at least one timebase value.
An A/V decoder adapted to decode data in one or more data streams, comprising:
- a system time reference recovery device, said system time reference recovery device comprising:
- a comparator adapted to receive at least one timebase value from an input stream;
- and
- a numerically controlled oscillator adapted to lock at least one recovered timebase signal to said timebase value.
Dependencies are inferred from the claim text.