Method and apparatus for wireless clock regeneration
Methods and systems for operating a wireless clock system for multimedia datastream transmission and display. Source clock frames are compared with a reference clock frames and the clock difference are transmitted to a wireless clock receiver which also receives the same reference clock frames. Source clock frames are re-constructed using the reference clock frames, clock difference information and the receiver's local clock system.
1. A method for synchronizing wireless data, comprising:
receiving first source clock frames of a datastream and receiving the clock frames of a Wi-Fi beacon by a transmitter;
calculating a clock difference between said Wi-Fi beacon clock frames and said first source clock frames; and
transmitting said clock difference wirelessly; and further comprising:
receiving said Wi-Fi beacon clock frames by a receiver; and
obtaining the timestamp of said received Wi-Fi beacon clock frames.
2. The method of claim 1 , further comprising: receiving said clock difference by the receiver; and constructing second source clock frames using said received clock difference and said timestamp.
3. The method of claim 2 , further comprising:
calculating an Initial Phase Difference between the local clock frames of the receiver and said second source clock frames;
constructing third source clock frames using said Initial Phase Difference and said second source clock frames; and
sending said third source clock frames to a destination player.
4. The method of claim 3 , further comprising: synchronizing said third source clock frames with said first source clock frames periodically.
5. The method of claim 3 , further comprising:
synchronizing said third source clock frames with said first source clock frames at request.
6. The method of claim 3 , further comprising: synchronizing said third source clock frames with said first source clock frames automatically when a pre-set jitter threshold is reached.
7. The method of claim 3 , further comprising:
making said datastream ready for output when said third source clock occurs; and
sending said datastream to said destination player simultaneously when said third source clock frames are sent to said player.
8. The method of claim 3 , wherein said datastream is one of or the combination of high definition video stream, high definition audio stream, digital gaming datastream, interne content, IPTV signals, digital satellite signals, and 2G/3G digital cellular signals.
9. A method for synchronizing a wireless HDMI datastream, comprising:
receiving first source clock frames of an HDMI datastream and receiving the clock frames of a Wi-Fi beacon by a wireless transmitter;
calculating a clock difference between said Wi-Fi beacon clock frames and said first source clock frames; and
transmitting said clock difference wirelessly; and further comprising:
receiving the clock frames of said Wi-Fi beacon by a receiver; and
obtaining a timestamp of said received Wi-Fi beacon clock frames.
10. The method of claim 9 , further comprising:
receiving said clock difference by the receiver; and
constructing second source clock frames using said clock difference and said timestamp.
11. The method of claim 10 , further comprising:
calculating an Initial Phase Difference between the local clock frames of the receiver and said second source clock frames;
constructing third source clock frames using said second source clock frames and said Initial Phase Difference; and
sending said third source clock frames to a display.
12. The method of claim 11 , further comprising:
synchronizing said third source clock frames with said first source clock frames periodically.
13. The method of claim 11 , further comprising:
synchronizing said third source clock frames with said first source clock frames at request.
14. The method of claim 11 , further comprising:
synchronizing said third source clock frames with said first source clock frames automatically as a pre-set jitter threshold is reached.
15. The method of claim 11 , further comprising:
making said HDMI datastream ready for output when said third source clock occurs; and
sending said HDMI datastream to said display simultaneously as said third source clock frames are sent to said display.
16. A method for wirelessly transmitting a HDMI datastream comprising the actions of:
multiplexing a HDMI datastream into a plurality of channels of data substreams;
obtaining first source clock frame information of said HDMI datastream;
calculating a clock difference between said first source clock frames and the clock frames of a Wi-Fi beacon; and
wirelessly transmitting said data substreams and said clock difference to a receiver to which said Wi-Fi beacon is also available; and further comprising:
receiving said plurality of channels of data substreams by said receiver;
processing said data substreams to make them ready for output;
receiving said clock difference by said receiver;
receiving the clock frames of said Wi-Fi beacon by said receiver;
constructing a second Wi-Fi beacon reference clock frames using the timestamps of said received Wi-Fi beacon reference clock frames;
constructing second source clock frames using said second Wi-Fi beacon reference clock frames and said clock difference.
17. The method of claim 16 , further comprising:
calculating the Initial Phase Difference between the local clock frames of the receiver and said second source clock frames;
constructing third source clock frames using said Initial Phase Difference and said second source clock frames;
making said datastream ready for output before said third source clock frames start; and
outputting said datastream and said third source clock frames simultaneously.