Systems and methods for multiple stream encoded digital video
View Patent ↗The digital video communications device includes a scalable video coding (SVC) controller including an encoder and associated block equalizer. The encoder is configured to receive digital video, and encode received digital video into a plurality of related streams including a base layer having a first modulation type, and scaled enhancement layers having different modulation types. The block equalizer is configured to generate a waveform by sequentially interleaving the plurality of related streams with equalizer probes. The digital video transmission approach allows the receiver to automatically provide the best video quality that the channel will support without negotiation with the transmitter.
1. A digital video communications device comprising:
a scalable video coding (SVC) controller including an encoder and associated block equalizer;
the encoder configured to
receive digital video, and
encode received digital video into a plurality of layers including a base layer having a first modulation type, and scaled enhancement layers, each scaled enhancement layer having a different modulation type from the base layer and each other scaled enhancement layer; and
the block equalizer configured to generate a waveform by sequentially interleaving the scaled enhancement layers with modulation independent equalizer probes comprising a known sequence of bits so that each scaled enhancement layer is independently evaluated based on received checking data and decoded from the base layer and each other scaled enhancement layer of the waveform upon being received and is thereafter combined with upper scaled enhancement layers.
2. The digital video communications device according to claim 1 , wherein the first modulation type and the different modulation types comprise different modulation and coding schemes (MCS).
3. The digital video communications device according to claim 1 , wherein the first modulation type and the different modulation types include at least a plurality of phase-shift keying (PSK) digital modulation schemes and quadrature-amplitude modulation (QAM) schemes.
4. The digital video communications device according to claim 1 , wherein the scaled enhancement layers are spatially scaled.
5. The digital video communications device according to claim 1 , wherein the scaled enhancement layers are temporally scaled.
6. The digital video communications device according to claim 1 , wherein the scaled enhancement layers are fidelity scaled.
7. The digital video communications device according to claim 1 , further comprising a digital video source configured to provide digital video to the SVC controller.
8. The digital video communications device according to claim 1 , further comprising a wireless transmitter configured to transmit the waveform.
9. A digital video communications system comprising:
a transmitting unit comprising a digital video source and a scalable video coding (SVC) controller configured to
receive digital video from the digital video source,
encode received digital video into a plurality of layers including a base layer having a first modulation type, and scaled enhancement layers, each scaled enhancement layer having a different modulation type from the base layer and each other scaled enhancement layer, and
generate a waveform by sequentially interleaving the scaled enhancement layers with modulation independent equalizer probes comprising a known sequence of bits so that each scaled enhancement layer is independently evaluated based on received checking data and decoded from the base layer and each other scaled enhancement layer of the waveform upon being received and is thereafter combined with upper scaled enhancement layers; and
a receiving unit configured to receive the waveform and comprising a receiver, associated demultiplexer and a plurality of output buffers;
the receiver configured to independently decode each of the layers of the waveform; and
the demultiplexer configured to divide the decoded layers into respective output buffers.
10. The digital video communications system according to claim 9 , wherein the first modulation type and the different modulation types comprise different modulation and coding schemes (MCS).
11. The digital video communications system according to claim 9 , wherein the first modulation type and the different modulation types include at least a plurality of phase-shift keying (PSK) digital modulation schemes and quadrature-amplitude modulation (QAM) schemes.
12. The digital video communications system according to claim 9 , wherein the scaled enhancement layers are spatially scaled with respect to resolution.
13. The digital video communications system according to claim 9 , wherein the scaled enhancement layers are temporally scaled with respect to framerate.
14. The digital video communications system according to claim 9 , wherein the scaled enhancement layers are fidelity scaled with respect to signal-to-noise ratio (SNR).
15. The digital video communications system according to claim 10 , wherein the transmitting unit further comprises a wireless transmitter configured to transmit the waveform.
16. A digital video communications method comprising:
providing a scalable video coding (SVC) controller including an encoder and associated block equalizer;
receiving digital video at the encoder, and encoding the received digital video into a plurality of layers including a base layer having a first modulation type, and scaled enhancement layers, each scaled enhancement layer having a different modulation type from the base layer and each other scaled enhancement layer; and
generating a waveform at the block equalizer by sequentially interleaving the scaled enhancement layers with modulation independent equalizer probes comprising a known sequence of bits so that each scaled enhancement layer is independently evaluated based on received checking data and decoded from the base layer and each other scaled enhancement layer of the waveform upon being received and is thereafter combined with upper scaled enhancement layers.
17. The digital video communications method according to claim 16 , wherein receiving includes the first modulation type and the different modulation types comprising different modulation and coding schemes (MCS).
18. The digital video communications method according to claim 16 , wherein receiving includes the first modulation type and the different modulation types comprising at least a plurality of phase-shift keying (PSK) digital modulation schemes and quadrature-amplitude modulation (QAM) schemes.
19. The digital video communications method according to claim 16 , wherein receiving includes the scaled enhancement layers being spatially scaled.
20. The digital video communications method according to claim 16 , wherein receiving includes the scaled enhancement layers being temporally scaled.
21. The digital video communications method according to claim 16 , wherein receiving includes the scaled enhancement layers being fidelity scaled.
22. The digital video communications method according to claim 16 , further comprising providing the digital video to the SVC controller from a digital video source.
23. The digital video communications method according to claim 16 , further comprising transmitting the waveform with a wireless transceiver.