IP TV queuing time/channel change operation

• US 8,151,301 B2
• Filed: 11/26/2008
• Issued: 04/03/2012
• Est. Priority Date: 08/06/2008
• Status: Active Grant

• Current Assignee: Avago Technologies International Sales Pte Limited (Broadcom, Inc.)
• Original Assignee: Broadcom Corporation (Broadcom, Inc.)
• Inventors: Bennett, James D.
• Primary Examiner(s): Saltarelli, Dominic D
• Assistant Examiner(s): CHUNG, JASON
• Application Number:
  US12/324,819
• Publication Number:
  US 20100037267A1
• Time in Patent Office: 1,224 Days
• Field of Search: None
• US Class Current: 725/41
• CPC Class Codes: H04L 63/08 for authentication of entities cryptographic mechanisms or cryptographic arrangements for entity authentication H04L9/32
• CPC Class Codes: H04N 21/23106 involving caching operations prefetching while addressing of a memory level in which the access to the desired data or data block requires associative addressing means within memory systems or architectures G06F12/0862; caching at an intermediate stage in a data network H04L67/568
• CPC Class Codes: H04N 21/234354 by altering signal-to-noise ratio parameters, e.g. requantization
• CPC Class Codes: H04N 21/234363 by altering the spatial resolution, e.g. for clients with a lower screen resolution
• CPC Class Codes: H04N 21/234381 by altering the temporal resolution, e.g. decreasing the frame rate by frame skipping
• CPC Class Codes: H04N 21/2665 Gathering content from different sources, e.g. Internet and satellite
• CPC Class Codes: H04N 21/6125 involving transmission via Internet transmission by internet of broadcast information H04H60/82
• CPC Class Codes: H04N 21/8549 Creating video summaries, e.g. movie trailer retrieval in video databases by using presentations in form of a video summary G06F16/739
• CPC Class Codes: H04N 7/165 Centralised control of user terminal subsequent to an upstream request signal H04N7/17345; Registering at central by two-way working H04N7/17309
• CPC Class Codes: H04N 7/173 with two-way working, e.g. subscriber sending a programme selection signal

Abstract

An Internet based television program delivery server, communicatively coupled to a plurality of television source devices and a plurality of recipient devices, that receives a plurality of Internet protocol television programs, buffers them, converts recipient device selected Internet protocol television programs to preview Internet television programs (having reduced per video frame data size) and transmits the preview Internet protocol television programs to the recipient device, for a short duration, until full scale Internet protocol television programs become available for viewing on the recipient device. A video conversion circuitry built into the Internet based television program delivery server performs the conversion of some of these television video contents to preview television video contents, to compensate for delay in full scale television program delivery during. The conversion itself includes reductions in frame rate, color and pixel resolutions, screen size and aspect ratios such that it produces lower bandwidth Internet protocol television program packets, during channel changing.

Claims

1. An Internet based television program delivery server, communicatively coupled to a plurality of television source devices and a plurality of recipient devices, the Internet based television program delivery server comprising:

at least one network interface that receives television video content from at least one of the plurality of television source devices;

a memory that stores the television video content;

a video conversion circuitry that converts at least some of the television video content to preview television video content, the preview television video content having reduced per video frame data size and frame rate as compared to the television video content, wherein the reduced per video frame data size of the preview television video content having reduced pixel resolution, reduced aspect ratio, reduced color resolution, and reduced screen size than the received television content;

an audio synchronization circuitry to synchronize audio of the received television video content to audio for the preview television video content to compensate for dropped frames;

an audio encoding module; and

a video encoding module, wherein the audio and video encoding modules encode and packetize the preview television video content for transmission;

the at least one network interface receiving a channel preview request from a recipient device; and

the at least one network interface transmitting corresponding preview television video content to the recipient device in response to the channel preview request.

2. The Internet based television program delivery server of claim 1:

further comprising;

authentication modules;

buffer storage units;

queuing modules;

wherein the video conversion circuitry comprises at least one video frame adaptation module that adapts a plurality of television programs to compensate for delay in full scale television program delivery during, channel changing;

wherein the queuing modules temporarily store Internet protocol television program packets arriving from each of the plurality of television source devices in various buffer storage units;

wherein the authentication modules, via login interfaces, authenticates the first recipient device;

wherein the video frame adaptation module adapts a television program requested by the recipient device to compensate for the delay in television program delivery, to produce lower bandwidth Internet protocol television program packets, during channel changing; and

the Internet based television program delivery server delivers the lower bandwidth Internet protocol television program packets to the recipient device, during initial periods of channel changing at the recipient device, until full scale television program becomes available.

3. The Internet based television program delivery server of claim 1:

further comprising video guide generation circuitry operable to produce a video guide based upon the television video content from the plurality of television source devices; and

wherein the at least one network interface transmitting the video guide to the recipient device.

4. The Internet based television program delivery server of claim 3, wherein the video guide comprises:

video content representative of television video content corresponding to at least some of the plurality of television source devices; and

respective program information for the video content.

5. The Internet based television program delivery server of claim 1, further comprising processing circuitry that coordinates handover of the recipient device from receipt of the preview television video content to receipt of corresponding television video content.

6. The Internet based television program delivery server of claim 1, wherein the plurality of television source devices produce Internet protocol television program packets having respective protocol standards.

7. The Internet based television program delivery server of claim 1, wherein the video conversion circuitry adapts the television video content of differing protocol standards to a format corresponding to the recipient device.

8. The Internet based television program delivery server of claim 1, wherein the at least one network interface transmitting both the preview television video content and the television video content to the recipient device.

9. The Internet based television program delivery server of claim 1, wherein the at least one network interface transmits both the preview television video content and the television video content to the recipient device in response to a corresponding channel selection request received from the recipient device.

10. A method performed by an Internet based television program delivery server that supports delivery of television programs to a recipient device, the method comprising:

receiving a plurality of Internet protocol television programs;

buffering the Internet protocol television programs;

converting at least some of the Internet protocol television programs to preview Internet protocol television programs, the preview Internet protocol television programs having reduced per video frame data size and frame rate as compared to the received Internet protocol television programs, wherein the reduced per video frame data size of the preview Internet protocol television programs having reduced pixel resolution, reduced aspect ratio, reduced color resolution, and reduced screen size than the received Internet protocol television programs;

synchronizing audio of the received Internet protocol television programs to audio for the preview Internet protocol television programs to compensate for dropped frames;

encoding and packetizing the preview Internet protocol television programs for transmission; and

transmitting the preview Internet protocol television programs that correspond to selected received Internet protocol television programs to the recipient device, for a short duration, until respective received Internet protocol television programs become available for viewing on the recipient device.

11. The method of claim 10, further comprising transmitting the Internet protocol television programs to the recipient device while also transmitting the preview Internet protocol television programs.