METHOD, DEVICE AND SYSTEM OF ERROR-PROTECTION OF A WIRELESS VIDEO TRANSMISSION

• US 20070291855A1
• Filed: 06/26/2007
• Published: 12/20/2007
• Est. Priority Date: 12/19/2005
• Status: Abandoned Application

• Current Assignee: Amimon Limited (Vitec Group PLC)
• Original Assignee: Amimon Limited (Vitec Group PLC)
• Inventors: Freundlich, Shay, Feder, Meir, Reznic, Zvi
• Application Number:
  US11/768,583
• Publication Number:
  US 20070291855A1
• Time in Patent Office: Days
• US Class Current: 375/240.27
• CPC Class Codes: H04L 1/0089 in payload
• CPC Class Codes: H04N 19/36 Scalability techniques involving formatting the layers as a function of picture distortion after decoding, e.g. signal-to-noise [SNR] scalability
• CPC Class Codes: H04N 19/61 in combination with predictive coding
• CPC Class Codes: H04N 19/67 involving unequal error protection [UEP], i.e. providing protection according to the importance of the data
• CPC Class Codes: H04N 21/234327 by decomposing into layers, e.g. base layer and one or more enhancement layers
• CPC Class Codes: H04N 21/2347 involving video stream encryption
• CPC Class Codes: H04N 21/4353 involving decryption of additional data arrangements using cryptography for the use of broadcast information or broadcast-related information H04H60/23
• CPC Class Codes: H04N 21/43637 involving a wireless protocol, e.g. Bluetooth, RF or wireless LAN [IEEE 802.11] arrangements for wireless networking or broadcasting of information in indoor or near-field type systems H04B10/114
• CPC Class Codes: H04N 7/1675 Providing digital key or authorisation information for generation or regeneration of the scrambling sequence pseudo-random number generators in general G06F7/58

Abstract

Some demonstrative embodiments of the invention include devices, systems and/or methods of error-protection of a wireless video transmission. Some demonstrative embodiments of the invention include a wireless transmitter to transmit a wireless transmission including a data stream corresponding to at least a video signal. The data stream may include a plurality of data components, which are protected according to an unequal error protection scheme. At least first and second data components of the plurality of data components may be protected by first and second error protection mechanisms, respectively. Other embodiments are described and claimed.

Claims

1. A wireless transmitter to transmit a wireless transmission including a data stream corresponding to at least a video signal, said data stream including a plurality of data components, which are protected according to an unequal error protection scheme, wherein at least first and second data components of said plurality of data components are protected by first and second error protection mechanisms, respectively.

2. The wireless transmitter of claim 1, wherein said first and second error protection mechanisms comprise first and second types of error correction codes, respectively.

3. The wireless transmitter of claim 2, wherein the error correction code of said first type is stronger than the error correction code of said second type.

4. The wireless transmitter of claim 2, wherein said first and second types of error correction codes comprise error correction codes of first and second rates, respectively.

5. The wireless transmitter of claim 1, wherein said first and second error protection mechanisms correspond to first and second different modulation schemes.

6. The wireless transmitter of claim 5, wherein said first and second modulation schemes include first and second different numbers of constellation points.

7. The wireless transmitter of claim 1, wherein said first protection mechanism allows recovery of a larger number of erroneous bits than said second protection mechanism.

8. The wireless transmitter of claim 1, wherein said first component comprises a plurality of most-significant bits of a value corresponding to said video signal, and wherein said second component comprises a plurality of least-significant-bits of said value.

9. The wireless transmitter of claim 1, wherein a degree of protection provided by said first error protection mechanism is higher than a degree of protection provided by said second error protection mechanism.

10. The wireless transmitter of claim 9, wherein an importance level of said first data component is higher than an importance level of said second data component.

11. The wireless transmitter of claim 1, wherein said first data component comprises a quantized value of a transformation coefficient corresponding to said video signal, and wherein said second data component comprises a quantization-error value corresponding to said quantized value.

12. The wireless transmitter of claim 1, wherein at least one of said first and second data components is protected by a full error correction mechanism.

13. The wireless transmitter of claim 1, wherein at least one of said first and second data components is protected by a partial error correction mechanism.

14. The wireless transmitter of claim 1, wherein at least one of said first and second data components is protected by an error detection mechanism.

15. The wireless transmitter of claim 1, wherein said plurality of data components comprise de-correlation components resulting from applying a de-correlation transformation to said video signal.

16. The wireless transmitter of claim 15, wherein said de-correlation transformation comprises at least one of a discrete cosine transform and a wavelet.

17. The wireless transmitter of claim 1, wherein said first and second data components are encrypted according to at least one encryption scheme.

18. The wireless transmitter of claim 16, wherein said first and second data components are encrypted according to first and second different encryption schemes, respectively.

19. The wireless transmitter of claim 1, wherein said video signal comprises a high-definition-television video signal.

20. The wireless transmitter of claim 19, wherein said high-definition-television video signal comprises an uncompressed high-definition-television video signal.

21. The wireless transmitter of claim 1, wherein said wireless transmission comprises a multiple-input-multiple-output transmission.

22. The wireless transmitter of claim 1, wherein said wireless transmission comprises an orthogonal-frequency-division-multiplexing transmission.

23. A system comprising:

a video source to generate a video signal; and

a wireless transmitter to transmit a wireless transmission including a data stream corresponding to said video signal, said data stream including a plurality of data components, which are protected according to an unequal error protection scheme, wherein first and second data components of said plurality of data components are protected by first and second error protection mechanisms, respectively.

24. The system of claim 23 comprising:

a video destination; and

a wireless receiver to receive said wireless transmission and to provide said video destination with an input corresponding to the transmitted video signal.

25. The system of claim 23, wherein said first and second error protection mechanisms comprise first and second types of error correction codes, respectively.

26. The system of claim 23, wherein said first and second error protection mechanisms correspond to first and second different modulation schemes.

27. The system of claim 23, wherein said first protection mechanism allows recovery of a larger number of erroneous bits than said second protection mechanism.

28. The system of claim 23, wherein said first component comprises a plurality of most-significant bits of a value corresponding to said video signal, and wherein said second component comprises a plurality of least-significant-bits of said value.

29. The system of claim 23, wherein a degree of protection provided by said first error protection mechanism is higher than a degree of protection provided by said second error protection mechanism.

30. The system of claim 23, wherein said first and second data components are encrypted according to at least one encryption scheme.

31. The system of claim 23, wherein said video signal comprises a high-definition-television video signal.

32. A wireless receiver to receive a wireless transmission including a data stream representing a video signal and to generate an output corresponding to the transmitted video signal, said data stream including a plurality of data components, which are protected according to an unequal error protection scheme, wherein first and second data components of said plurality of data components are protected by first and second error protection mechanisms, respectively.

33. The wireless receiver of claim 32, wherein said first and second error protection mechanisms comprise first and second types of error correction codes, respectively.

34. The wireless receiver of claim 32, wherein said first and second error protection mechanisms correspond to first and second different modulation schemes.

35. The wireless receiver of claim 32, wherein said first component comprises a plurality of most-significant bits of a value corresponding to said video signal, and wherein said second component comprises a plurality of least-significant-bits of said value.

36. The wireless receiver of claim 32, wherein said first and second data components are encrypted according to at least one encryption scheme, and wherein said receiver is to decrypt said first and second data components.

37. The wireless receiver of claim 32, wherein said video signal comprises a high-definition-television video signal.

38. A method comprising transmitting a wireless transmission including a data stream corresponding to a video signal, said data stream including a plurality of data components, which are protected according to an unequal error protection scheme, wherein first and second data components of said plurality of data components are protected by first and second error protection mechanisms, respectively.

39. The method of claim 38 comprising:

receiving said wireless transmission; and

generating an output corresponding to the transmitted video signal.

40. The method of claim 38, wherein said first and second error protection mechanisms comprise first and second types of error correction codes, respectively.

41. The method of claim 38, wherein said first and second error protection mechanisms correspond to first and second different modulation schemes.

42. The method of claim 38, wherein said first component comprises a plurality of most-significant bits of a value corresponding to said video signal, and wherein said second component comprises a plurality of least-significant-bits of said value.

43. The method of claim 38 comprising encrypting said first and second data components according to at least one encryption scheme.