Method for effectively implementing a multi-room television system

• US 9,491,523 B2
• Filed: 09/10/2012
• Issued: 11/08/2016
• Est. Priority Date: 05/26/1999
• Status: Expired due to Fees

• Current Assignee: Sling Media LLC (Dish Network Corporation)
• Original Assignee: Echostar Technologies LLC (Echostar Corporation)
• Inventors: Margulis, Neal
• Primary Examiner(s): Dubasky, Gigi L
• Application Number:
  US13/609,033
• Publication Number:
  US 20130003822A1
• Time in Patent Office: 1,520 Days
• Field of Search: 725 79- 82, 725/85, 725/120
• US Class Current: 1/1
• 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. 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 as the selected video information is received, wherein the processed stream comprises video frames of the selected video information that are encoded into a plurality of subbands each representing a different resolution of the video frame and each having an error resiliency, and wherein the processing unit is further configured to receive network feedback information comprising information about the RF transmission channel, and to adapt the encoding of the selected video information by adjusting the error resiliencies for the plurality of subbands as the selected video information is received based on the characteristic of the network described in the network feedback information so that the subband representing the lowest resolution of the video frame is more error resilient than the subband representing the highest resolution of the video information frame;

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;

wherein each of the plurality of subbands is simultaneously transmitted to the display device on the wireless network using a plurality of channels each having a different transmission quality, and wherein the error resiliency of each subband is adapted by matching the subbands having lower resolutions to the channels having higher transmission qualities.

2. The apparatus of claim 1 wherein said error resiliency is adapted by changing a number of forward error correcting (FEC) bits.

3. The apparatus of claim 1 wherein each of said subbands comprises wavelet transforms of said video information.

4. The apparatus of claim 1 wherein said transmitter utilizes an IEEE 802.11 protocol.

5. The apparatus of claim 1 wherein said processed stream follows conventions of 3D wavelet transform data.

6. 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 video information selected by the viewer as the selected video information is received to create a processed stream comprising a plurality of subbands representing video frames of the video information, each subband representing a different video resolution of the video frame and having an error resiliency;

adjusting the encoding of the selected video information as the selected video information is received based on information about the wireless network to adjust the error resiliencies of the plurality of subbands so that the subband representing the lowest video resolution of the video frame is more error resilient than the subband representing the highest video resolution of the video frame;

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

transmitting the transmitter-ready stream via the wireless network using a plurality of channels, and wherein the unequal error resiliences are adapted by matching the subbands having the lower resolutions to the channels having higher transmission qualities.

7. The method of claim 6 further comprising monitoring channel error characteristics of an RF transmission channel to thereby generate the information about the wireless network.

8. The method of claim 7 wherein the adjusting comprises adjusting the error resiliency for at least one of the subband based upon the monitored channel error characteristics of the wireless network.

9. The method of claim 6 wherein the processed video stream comprises a wavelet-encoded video stream in which the plurality of subbands of video have unequal error resilience.

10. The method of claim 9 wherein each of said subbands comprises wavelet transforms of said video information.

11. The method of claim 9 wherein said error resilience of at least one of the subbands is adapted by changing a number of forward error correcting (FEC) bits.

12. The method of claim 6 wherein signals are combined from two or more program sources to produce the processed video stream as a combined video stream.

13. The method of claim 6 further comprising converting the video information from an analog format to a digital format.

14. 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 selected program information as the selected program information is received to generate a processed stream comprising a plurality of subbands each representing video frames of the program information with different video resolutions and each having an error resiliency, to adapt the encoding of the selected program information as the selected program information is received to thereby adjust the error resiliencies of the subbands based on the characteristics of the RF transmission channel described in the network feedback information so that the subband representing the lowest video resolution of the video frame is more error resilient than the subband representing the highest video resolution of the video frame, 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, wherein each of the subbands 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 lowest video resolution to the channels having higher transmission qualities.

15. The base station of claim 14 wherein the subband encodings each comprise a wavelet transform of said video frame.

16. The base station of claim 14 wherein the encoding is adapted by 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.