Methods circuits devices and systems for wireless communication of video information
Disclosed are methods, circuits, devices systems for wireless communication of video information. According to some embodiments, an energy level of one or a group of transmit video block(s) to be transmitted as part of a wireless transmission frame may be adjusted so at to maintain a substantially constant transmission power (e.g. within a range of transmission power levels).
1. A wireless video source transceiver comprising:
a transmission block generator adapted to convert a set of pixel values into a video transmission block suitable for transmission;
adjustment control logic adapted to determine an energy adjustment factor to be applied to said video transmission block such that transmission power fluctuation of a functionally associated transmitter is mitigated during transmission of said block; and
a video block energy estimator adapted to estimate or measure an energy level or value for said transmission block prior to transmission;
wherein said energy adjustment factor is based on said estimated or measured energy level or value for said transmission block.
2. The wireless video source transceiver according to claim 1 , wherein said video block energy estimator is further adapted to estimate the energy level of a set of video transmission blocks to be transmitted together.
3. The wireless video source transceiver according to claim 2 , wherein said digital control logic is further adapted to determine a common energy adjustment factor to be applied to the set of video transmission blocks.
4. The wireless video source transceiver according to claim 3 , wherein the common energy adjustment factor to be applied to the set of video transmission blocks is selected such that a total energy value of the set of blocks is adjusted to a value within a target energy range.
5. The wireless video source transceiver according to claim 4 , wherein the target energy range is substantially constant across multiple video transmission block sets.
6. The wireless video source transceiver according to claim 3 , wherein said digital control logic is further adapted to determine whether to apply a common energy adjustment factor to a given video transmission block in the set based on an output of said video block energy estimator.
7. The wireless video source transceiver according to claim 1 , wherein values within two or more video transmission blocks are transposed or scrambled such that energy value deviations across the two or more video transmission blocks is mitigated.
8. The wireless video source transceiver according to claim 1 , further comprising a transmitter adapted to transmit a set of video transmission blocks, wherein transmission of a given set of blocks includes transmission of information relating to energy value adjustments performed on one or more video transmission blocks in the set.
9. The wireless video source transceiver according to claim 8 , wherein transmission of a given set of blocks includes transmission of information relating to a common gain factor associated with the set of blocks.
10. A method of wireless video transmission comprising:
converting a set of pixel values into a video transmission block suitable for transmission;
estimating or measuring an energy level or value for said transmission block prior to transmission;
determining an energy adjustment factor to be applied to said video transmission block such that transmission power fluctuation of a functionally associated transmitter is mitigated during transmission of said block;
wherein said energy adjustment factor is based on said estimated or measured energy level or value for said transmission block.
11. The method according to claim 10 , further comprising estimating the energy level of a set of video transmission blocks to be transmitted together.
12. The method according to claim 11 , determining a common energy adjustment factor to be applied to the set of video transmission blocks.
13. The method according to claim 12 , wherein the common energy adjustment factor to be applied to the set of video transmission blocks is selected such that a total energy value of the set of blocks is adjusted to a value within a target energy range.
14. The method according to claim 13 , wherein the target energy range is substantially constant across multiple video transmission block sets.