Set top box with transcoding capabilities

• US 20080263621A1
• Filed: 04/17/2007
• Published: 10/23/2008
• Est. Priority Date: 04/17/2007
• Status: Abandoned Application

• Current Assignee: DigitalOptics Corporation International (Adeia, Inc.)
• Original Assignee: Horizon Semiconductors Ltd.
• Inventors: Yavits, Leonid, Morad, Amir, Austerlitz, Ofer
• Application Number:
  US11/785,397
• Publication Number:
  US 20080263621A1
• Time in Patent Office: Days
• US Class Current: 725/139
• CPC Class Codes: H04N 21/43615 Interfacing a Home Network, e.g. for connecting the client to a plurality of peripherals home Audio Video Interoperability [HAVI] data switching networks H04L12/2805
• CPC Class Codes: H04N 21/440218 by transcoding between formats or standards, e.g. from MPEG-2 to MPEG-4 conversion of standards in analogue television systems H04N7/01
• CPC Class Codes: H04N 21/440263 by altering the spatial resolution, e.g. for displaying on a connected PDA
• CPC Class Codes: H04N 21/4516 involving client characteristics, e.g. Set-Top-Box type, software version or amount of memory available
• CPC Class Codes: H04N 21/454 Content or additional data filtering, e.g. blocking advertisements

Abstract

A media stream transcoding set top box including an RF input interface, an RF receiver configured to receive from the RF input interface an RF signal including an original digital media stream, and produce an input digital media stream based, at least in part, on the original digital media stream, the input digital media stream including one or more channels, the channels carrying at least one media stream, a decoder configured to receive the input digital media stream and extract therefrom an uncompressed media stream, a processor configured to process the uncompressed media stream, to produce a processed media stream, an encoder configured to compress the processed media stream, to produce a compressed processed digital media stream, and an output interface configured to output the compressed processed digital media stream in a format suitable for a client device. Related apparatus and methods are also described.

Claims

1. A media stream transcoding set top box (STB) comprising:

an RF input interface;

an RF receiver configured to receive from the RF input interface an RF signal comprising an original digital media stream, and produce an input digital media stream based, at least in part, on the original digital media stream, the input digital media stream comprising one or more channels, the channels carrying at least one media stream;

a decoder configured to receive the input digital media stream and extract therefrom an uncompressed media stream;

a processor configured to process the uncompressed media stream, to produce a processed media stream;

an encoder configured to compress the processed media stream, to produce a compressed processed digital media stream; and

an output interface configured to output the compressed processed digital media stream in a format suitable for a client device.

2. The STB according to claim 1 and wherein the compressed processed digital media stream is encrypted before being output.

3. The STB according to claim 1 and wherein the processor is configured to deinterlace the uncompressed media stream.

4. The STB according to claim 1 and wherein the output interface comprises a wireless communication interface.

5. The STB according to claim 1 and wherein the output interface comprises a wireless communication interface operative for wireless transmission and for wireless reception.

6. The STB according to claim 1 and wherein the output interface is also configured to output the processed media stream and to output the uncompressed media stream.

7. The STB according to claim 6 and wherein:

the RF input interface comprises a plurality of RF input interfaces;

the RF receiver is configured to simultaneously receive a plurality of RF signals and to simultaneously produce a plurality of input digital media streams;

the decoder is configured to simultaneously receive a plurality of input digital media streams, and to simultaneously extract therefrom more than one uncompressed media stream;

the processor is configured to simultaneously process more than one uncompressed media stream and to simultaneously produce more than one processed media stream;

the encoder is configured simultaneously compress more than one processed media stream and to simultaneously produce more than one compressed processed digital media stream;

the output interface comprises a plurality of output interfaces; and

the output interface is configured to simultaneously output more than one compressed processed digital media stream, more than one processed media stream, and more than one uncompressed media stream, via respective more than one output interfaces.

8. The STB according to claim 7 and wherein at least one of the more than one compressed processed digital media stream is encrypted before being output.

9. The STB according to claim 1 comprised in one integrated circuit.

10. The STB according to claim 1 and further comprising an input interface configured to receive the uncompressed media stream from an external source.

11. The STB according to claim 10 and wherein the input interface comprises a wireless communication interface.

12. The STB according to claim 10 and wherein the input interface comprises a plurality of input interfaces.

13. The STB according to claim 10 and wherein the processor is configured to receive uncompressed media streams simultaneously from the decoder and from the input interface.

14. The STB according to claim 10 and wherein the external source is one of a group of sources consisting of:

a Local Area Network (LAN), a World Wide Web connection, a DVD player, a video player, an HD-DVD player, a Blu-ray player, a Portable Media Player (PMP), a mobile phone, a Consumer Electronic (CE) device, a camcorder, a digital camera, and a hard disk.

15. The STB according to claim 1 and wherein the processor is configured to modify the uncompressed media stream, and the encoder is configured to compress the modified processed media stream.

16. The STB according to claim 15 and wherein the modifying comprises changing a video resolution of the uncompressed media stream.

17. The STB according to claim 15 and wherein the modifying comprises de-interlacing the uncompressed media stream.

18. The STB according to claim 15 and wherein the modifying comprises changing a frame rate of the uncompressed media stream.

19. The STB according to claim 1 and wherein the encoder is configured to compress the processed media stream using a different compression standard than was used for the input digital media stream.

20. The STB according to claim 1 and wherein the encoder is configured to compress the processed media stream according to a compression standard based, at least in part, on a compression standard associated with the client device.

21. The STB according to claim 1 and wherein the processor is configured to process the uncompressed media stream to provide an advanced service for the client device, and wherein the advanced service is at least one of a group consisting of:

EPG, e-mail, internet access, voice over IP, performing personal video recording, providing video on demand, and enabling video gaming.

22. The STB according to claim 1 and wherein the processor is configured to produce a processed media stream comprising a composite layout, the composite layout combining content of one of the uncompressed media streams with additional content.

23. The STB according to claim 22 and wherein the additional content comprises at least one of a still image, a graphic, and data.

24. The STB according to claim 1 and wherein the processor is configured to produce a processed media stream comprising a composite layout, the composite layout comprising content from two or more of the uncompressed media streams.

25. The STB according to claim 24 and wherein the composite layout is one of a group consisting of:

a picture in picture comprised of content from the two or more uncompressed media streams, an EPG, and a mosaic comprised of content from more than one uncompressed media stream.

26. The STB according to claim 1 and wherein the client device is one of a group consisting of:

a display device, a TV set, a TV display, a computer display, a set top box, an audio device, a home sound system, an audio-visual storage device, a mobile phone, a Portable Media Player (PMP), an MP3 player, and an MP4 player.

27. The STB according to claim 1 and wherein the encoder is configured to compress the processed media stream to comprise a bandwidth, based, at least in part, on a bandwidth associated with a transmission channel to the client device.

28. The STB according to claim 27 and wherein the encoder is configured to compress the processed media stream to comprise the bandwidth using rate control.

29. The STB according to claim 27 and wherein the encoder is configured to compress the processed media stream to comprise the bandwidth using statistical multiplexing.

30. The STB according to claim 27 and wherein the transmission channel is one of a group consisting of:

a home network, a Local Area Network, a Wide Area Network, a wireless network, an optic fiber, and the Internet.

31. The STB according to claim 1 and wherein the encoder is configured to compress the processed media stream to comprise a bandwidth based, at least in part, on a bandwidth associated with the client device.

32. The STB according to claim 1 and wherein the encoder is configured to produce the compressed processed digital media stream to comprise DRM.

33. The STB according to claim 32 and wherein the DRM is based, at least in part, on DRM comprised in the input digital media stream.

34. The STB according to claim 32 and wherein the output interface is configured to output the compressed processed digital media stream only after performing an authentication handshake procedure with the client device.

35. The STB according to claim 32 and wherein the output interface is configured to block output of the compressed processed digital media stream based, at least in part, on DRM data comprised in the compressed processed digital media stream.

36. The STB according to claim 1 and wherein the encoder is configured to compress the processed media stream to produce a compressed processed digital media stream suitable for trick mode playback.

37. The STB according to claim 1 and wherein the encoder is configured to produce the compressed processed digital media stream in a manner suitable for trick mode playback, based, at least in part, on analysis performed by the processor.

38. The STB according to claim 37 and wherein the analysis comprises one of a group of analyses consisting of:

scene change detection, zoom in/out detection, fade-in/out detection, 3;

2 pull-down detection, and 2;

2 pull-down detection.

39. A method of transcoding a media stream comprising:

receiving an RF signal comprising an original digital media stream;

producing an input digital media stream based, at least in part, on the original digital media stream, the input digital media stream comprising one or more channels, the channels carrying at least one media stream;

extracting an uncompressed media stream from the input digital media stream;

processing the uncompressed media stream, producing a processed media stream; and

compressing the processed media stream, producing a compressed processed digital media stream; and

outputting the compressed processed digital media stream in a format suitable for a client device.

40. The method according to claim 39 and wherein the outputting comprises wireless outputting.

41. The method according to claim 39 and wherein the outputting comprises encryption.

42. The method according to claim 39 and wherein the outputting additionally comprises outputting the processed media stream and outputting the uncompressed media stream.

43. The method according to claim 42 and wherein

the receiving comprises simultaneously receiving a plurality of RF signals;

the producing an input digital media stream comprises simultaneously producing a plurality of input digital media streams;

the extracting comprises simultaneously extracting a plurality of uncompressed media streams;

the processing comprises simultaneously processing a plurality of uncompressed media streams and simultaneously producing a plurality of processed media streams;

the compressing comprises simultaneously compressing a plurality of processed digital media streams and simultaneously producing a plurality of compressed processed digital media streams; and

the outputting comprises simultaneously outputting a plurality of processed media streams and compressed processed digital media streams to a plurality of respective client devices.

44. The method according to claim 39 and wherein the receiving further comprises receiving the input digital media stream from an external source.

45. The method according to claim 44 and wherein receiving comprises receiving the input digital media stream from an external source via wireless.

46. The method according to claim 44 and wherein the receiving the input digital media stream from an external source occurs simultaneously with producing an input digital media stream based, at least in part, on the original digital media stream.

47. The method according to claim 39 and wherein the processing comprises modifying the uncompressed media stream, and the compressing comprises compressing the modified uncompressed media stream.

48. The method according to claim 47 and wherein the modifying comprises at least one of a group consisting of:

changing a video resolution of the uncompressed media stream, de-interlacing the uncompressed media stream, changing a frame rate of the uncompressed media stream, compressing the processed media stream in a trick-play friendly format, and compressing the processed media stream using a different compression standard than was used for the input digital media stream.

49. The method according to claim 39 and wherein the processing comprises processing the uncompressed media stream to provide an advanced service for the client device, and wherein the advanced service is at least one of a group consisting of:

EPG, e-mail, internet access, voice over IP, performing personal video recording, providing video on demand, and enabling video gaming.

50. The method according to claim 39 and wherein the processing comprises producing the processed media stream to comprise a composite layout, the composite layout combining content of one of the uncompressed media streams with additional content.

51. The method according to claim 50 and wherein the additional content comprises at least one of a still image, a graphic, and data.

52. The method according to claim 39 and wherein the processing comprises producing the processed media stream to comprise a composite layout, the composite layout comprising content from two or more uncompressed media streams.

53. The method according to claim 52 and wherein the composite layout is one of a group consisting of:

a picture in picture comprised of content from the two or more uncompressed media streams, an EPG, and a mosaic comprised of content from more than one uncompressed media stream.

54. The method according to claim 39 and wherein the compressing comprises compressing the processed media stream to comprise a bandwidth based, at least in part, on a bandwidth associated with a transmission channel to the client device.

55. The method according to claim 39 and wherein the compressing comprises compressing the processed media stream to comprise a bandwidth based, at least in part, on a bandwidth associated with the client device.

56. The method according to claim 39 and wherein the compressing comprises producing the compressed processed digital media stream to comprise DRM, based, at least in part, on DRM comprised in the input digital media stream.

57. The method according to claim 56 and wherein the outputting the compressed processed digital media stream is performed only after performing an authentication handshake procedure with the client device.

58. The method according to claim 39 and wherein the outputting is blocked based, at least in part, on DRM data associated with the compressed processed digital media stream.

59. The method according to claim 39 and wherein the compressing comprises producing the compressed processed digital media stream in a manner suitable for trick mode playback, based, at least in part, on analysis performed by the processing.