Data rate management system and method for A/V decoder
View Patent ↗Devices and methods are disclosed for managing an output of an output stream. One embodiment relates to a method of tracking an output of an A/V decoder. In this embodiment, indication of an output stream time reference and a location of at least one output sample are received. The received time reference is compared to the output sample and the output sample rate of the A/V decoder is adjusted.
1. A method of tracking an output of an A/V decoder comprising:
(a) receiving an indication of an input stream time reference signal;
(b) receiving a location of at least one output sample;
(c) comparing said time reference signal to said output sample; and
(d) adjusting an output sample rate of the A/V decoder.
2. The method of claim 1 , wherein step (b) further comprises receiving a location of a current output sample.
3. The method of claim 1 , wherein step (c) further comprises determining if said output sample location leads said time reference signal.
4. The method of claim 3 , wherein step (d) comprises slowing said output sample rate.
5. The method of claim 1 , wherein step (c) further comprises determining if said output sample location lags said time reference signal.
6. The method of claim 5 , wherein step (d) comprises speeding up said output sample rate.
7. The method of claim 1 , further comprising repeating steps (a) through (d).
8. The method of claim 1 , wherein step (d) comprises indirectly adjusting said output sample rate.
9. The method of claim 8 , wherein step (d) comprises indirectly adjusting said output sample rate using at least one rate control signal.
10. The method of claim 9 , wherein step (d) further comprises receiving at least one next sample request signal as feedback.
11. The method of claim 1 , wherein step (d) comprises directly adjusting said output sample rate.
12. The method of claim 11 , wherein step (d) comprises directly adjusting said output sample rate using at least one phase signal.
13. A method of tracking an output of an A/V decoder comprising:
(a) receiving an indication of an input stream system time reference signal;
(b) receiving a location of a current output sample;
(c) determining if said current output sample leads or lags said system time reference signal;
(d) slowing an output sample rate if said current output sample location leads said system time reference signal; and
(e) increasing said output sample rate if said current output sample location lags said system time reference signal.
14. The method of claim 13 , comprising repeating steps (a) through (e).