METHOD FOR EFFECTIVELY IMPLEMENTING A MULTI-ROOM TELEVISION SYSTEM

• US 20130003822A1
• Filed: 09/10/2012
• Published: 01/03/2013
• Est. Priority Date: 05/26/1999
• Status: Active Grant

• Current Assignee: Sling Media LLC (Echostar Corporation)
• Original Assignee: Sling Media Incorporated (Echostar Corporation)
• Inventors: Margulis, Neal
• Granted Patent: US 9,491,523 B2
• Time in Patent Office: Days
• US Class Current: 375/240.01
• CPC Class Codes: H04L 1/0041 Arrangements at the transmitter end
• CPC Class Codes: H04L 12/2838 Distribution of signals within a home automation network, e.g. involving splitting/multiplexing signals to/from different paths adaptations of television systems for transmission by electric cable for domestic distribution H04N7/106; hybrid transport H04L12/6418; home network arrangements specially adapted for distribution of digital video signals H04N7/24
• CPC Class Codes: H04L 2012/2849 Audio/video appliances
• CPC Class Codes: H04L 65/1101 Session protocols
• CPC Class Codes: H04L 65/752 adapting media to network capabilities
• CPC Class Codes: H04L 65/762 at the source reformatting of additional data in video distribution servers H04N21/2355
• CPC Class Codes: H04N 21/4227 Providing Remote input by a user located remotely from the client device, e.g. at work
• CPC Class Codes: H04N 21/426 Internal components of the client ; Characteristics thereof H04N5/44 takes precedence
• 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 21/43632 involving a wired protocol, e.g. IEEE 1394 high-speed IEEE 1394 serial bus H04L12/40052
• 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 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 21/440227 by decomposing into layers, e.g. base layer and one or more enhancement layers
• CPC Class Codes: H04N 21/44227 Monitoring of local network, e.g. connection or bandwidth variations; Detecting new devices in the local network configuring of peripheral devices in general G06F9/4411; monitoring connectivity in data switched networks H04L43/0811
• CPC Class Codes: H04N 21/4621 Controlling the complexity of the content stream or additional data, e.g. lowering the resolution or bit-rate of the video stream for a mobile client with a small screen arrangements for using the results of monitoring on user's side in broadcast systems H04H60/65; flow control in packet networks H04L47/10
• CPC Class Codes: H04N 21/4622 Retrieving content or additional data from different sources, e.g. from a broadcast channel and the Internet web site content organization and management for information retrieval from the Internet G06F16/958; transmission by internet of broadcast information H04H60/82; stock exchange data over packet-switching network H04L12/1804; push services including data channel over packet-switching network H04L12/1859
• CPC Class Codes: H04N 21/84 Generation or processing of descriptive data, e.g. content descriptors systems specially adapted for using meta-information in broadcast systems H04H60/73
• CPC Class Codes: H04N 5/38 Transmitter circuitry for the transmission of television signals according to analogue transmission standards H04N5/14 takes precedence
• CPC Class Codes: H04N 7/106 for domestic distribution
• CPC Class Codes: H04W 84/12 WLAN [Wireless Local Area Networks]

Abstract

A method for effectively implementing a multi-room television system includes a digital base station that processes and combines various program sources to produce a processed stream. A communications processor then responsively transmits the processed stream as a local composite output stream to various wired and wireless display devices for flexible viewing at variable remote locations. The transmission path performance is used to determine the video encoding process, and special attention is taken to assure that all users have low-latency interactive capabilities.

Claims

1-45. -45. (canceled)

46. An apparatus that provides an output stream to a display device over a network comprising a radio frequency (RF) transmission channel, the apparatus comprising:

an input configured to receive video information comprising television programming from a program source, wherein the video information is selected responsive to control information received from the display device via the network that identifies the selected video information based upon an input received from a viewer at the display device;

a processing unit configured to encode the selected video information to create a processed stream, to receive network feedback information that describes a characteristic of the network, and to adapt the encoding of the received video information based on the characteristic of the network described in the network feedback information, wherein the network feedback information comprises information about the RF transmission channel, and wherein the processing unit is configured to use the information about the RF transmission channel to adapt the encoding based on the RF transmission channel information;

a communications unit configured to manipulate the processed stream to produce an output stream; and

a wireless transmitter configured to transmit the output stream to the display device via the network.

47. The apparatus of claim 46 wherein the selected video information is encoded into a plurality of subbands to create the processed stream.

48. The apparatus of claim 47 wherein the encoding is adapted by adjusting an error resiliency for each of the plurality of subbands.

49. The apparatus of claim 48 wherein said error resiliency is adapted by changing a number of forward error correcting (FEC) bits.

50. The apparatus of claim 47 wherein each of said subbands comprises wavelet transforms of said video information.

51. The apparatus of claim 46 wherein said transmitter utilizes an IEEE 802.11 protocol.

52. The apparatus of claim 46 wherein said processed stream follows conventions of 3D wavelet transform data.

53. The apparatus of claim 46 wherein the selected video information is encoded into a plurality of subbands each having an error resiliency to create the processed stream, and wherein the plurality of subbands is transmitted on the wireless network using a plurality of channels, and wherein the error resiliency of each subband is adapted by matching the subbands having greater image densities to the channels having higher transmission qualities.

54. A method comprising the steps of:

receiving control information from a display device via a wireless network having at least one radio frequency (RF) transmission channel, wherein the control information identifies video information selected by a viewer for presentation on the display device;

responsive to the control information, receiving the video information selected by the viewer from a program source that provides television programming;

encoding the received video information to create a processed stream;

adjusting the encoding based on information about the wireless network;

processing the processed stream to generate a transmitter-ready stream; and

transmitting said transmitter-ready stream via the network.

55. The method of claim 54 further comprising monitoring channel error characteristics of an RF transmission channel to thereby generate the information about the wireless network.

56. The method of claim 55 wherein the processed stream comprises a plurality of subband encodings, and wherein the adjusting comprises adjusting an error resiliency for at least one of the subband encodings based upon the monitored channel error characteristics of the wireless network.

57. The method of claim 54 wherein the processed video stream comprises a wavelet-encoded video stream in which a plurality of subbands of video have unequal error resilience.

58. The method of claim 57 wherein each of said subbands comprises wavelet transforms of said video information.

59. The method of claim 57 wherein said error resilience of at least one of the subbands is adapted by changing a number of forward error correcting (FEC) bits.

60. The method of claim 57 wherein the subbands are transmitted on the wireless network using a plurality of channels, and wherein the unequal error resiliences are adapted by matching the subbands having the greatest image densities to the channels having higher transmission qualities.

61. The method of claim 54 wherein signals are combined from two or more program sources to produce the processed video stream as a combined video stream.

62. The method of claim 54 further comprising converting the video information from an analog format to a digital format.

63. A base station configured to process program information selected by a viewer of a display system communicating with the base station over a network comprising a radio frequency (RF) transmission channel, the base station comprising:

processing circuitry configured to receive the selected program information, to receive network feedback information describing characteristics of the RF transmission channel, to encode the program information to generate a processed stream, to adapt the encoding of the program information based on the characteristics of the RF transmission channel described in the network feedback information, and to manipulate the processed stream to produce the output stream for transmission; and

a network interface configured to transmit the output stream over the network to the display system.

64. The base station of claim 63 wherein the processed stream comprises a plurality of subband encodings each comprising a wavelet transform of said video information.

65. The base station of claim 64 wherein the encoding is adapted changing a number of forward error correcting (FEC) bits in at least one of said subband encodings based upon the characteristics of the RF transmission channel.

66. The base station of claim 64 wherein each of the subband encodings is transmitted on the wireless network using a separate one of a plurality of channels, and wherein the encoding of the processed stream is adapted by matching the subbands having the greatest image densities to the channels having higher transmission qualities.