Meta channel caching and instant viewing related technology

• US 8,458,746 B2
• Filed: 02/05/2009
• Issued: 06/04/2013
• Est. Priority Date: 02/05/2009
• Status: Active Grant

• Current Assignee: PurpleComm Incorporated
• Original Assignee: PurpleComm Incorporated
• Inventors: Chang, Jack H., Sheu, William H., Tuan, Sherman
• Primary Examiner(s): Pendleton, Brian
• Assistant Examiner(s): LUONG, ALAN H
• Application Number:
  US12/366,337
• Publication Number:
  US 20100199311A1
• Time in Patent Office: 1,580 Days
• Field of Search: 725/39, 725/46, 725/131, 725/67, 725/91, 725/93, 725/94, 725/114, 725/116, 725/144, 725/146
• US Class Current: 725/46
• CPC Class Codes: H04N 21/4381 Recovering the multiplex stream from a specific network, e.g. recovering MPEG packets from ATM cells transmission of MPEG streams over ATM H04L12/5601
• CPC Class Codes: H04N 21/4384 involving operations to reduce the access time, e.g. fast-tuning for reducing channel switching latency
• CPC Class Codes: H04N 21/4821 using a grid, e.g. sorted out by channel and broadcast time

Abstract

Caching related technology, in which a time needed to begin rendering network-based video content without caching a decoded version of the content is determined and, the determined time to begin rendering the network-based video content is compared to a threshold time. When the determined time to begin rendering the network-based video content exceeds the threshold time, an initial portion of the network-based video content is pre-transcoded to a faster video codec format, and the pre-transcoded initial portion of the network-based video content is stored in electronic storage associated with a media system of a user.

Claims

1. A method of enabling a media system to render content, the method comprising:

storing, in first electronic storage, meta-channel information defining multiple meta-channels that identify content entries and that indicate an order with which to experience the content entries;

accessing, from the meta-channel information stored in the first electronic storage, content entries corresponding to content defined by each of the multiple meta-channels, the accessed content entries including at least one content entry that relates to a first type of content and at least one content entry that relates to a second type of content;

based on the accessed content entries, identifying a type of content defined by each of the multiple meta-channels;

based on the identified type of content defined by each of the multiple meta-channels, selecting a subset of the multiple meta-channels, the selected subset of meta-channels each defining the second type of content;

storing, in second electronic storage associated with a media system of a user, a decoded version of the content defined by each of the meta-channels included in the selected subset of meta-channels; and

in response to selection, by the user, of one of the meta-channels included in the selected subset of meta-channels, controlling the media system to render content defined by the selected meta-channel using the decoded version of the content stored in the second electronic storage associated with the media system of the user,

wherein selecting the subset of the multiple meta-channels comprises;

identifying a first meta-channel included in the multiple meta-channels that defines a first Internet video;

determining that the first Internet video is ready for viewing in a first time that is less than a threshold time;

identifying a second meta-channel included in the multiple meta-channels that defines a second Internet video;

determining that the second Internet video is ready for viewing in a second time that is more than the threshold time; and

based on the determination that the first Internet video is ready for viewing in the first time that is less than the threshold time and the determination that the second Internet video is ready for viewing in the second time that is more than the threshold time, including the second meta-channel in the selected subset of the multiple meta-channels while excluding the first meta-channel from the selected subset of the multiple meta-channels.

2. The method of claim 1 wherein controlling the media system comprises controlling the media system to render content defined by the selected meta-channel using the decoded version of the content stored in the second electronic storage, whereby using the decoded version enables a channel switching time for switching to the selected meta-channel to be comparable to a channel switching time for switching to a meta-channel the defines the first type of content, which is content broadcast by a content provider at a specific time.

3. The method of claim 1 wherein:

controlling the media system comprises controlling the media system to render content defined by the selected meta-channel using the decoded version of the content stored in the second electronic storage, whereby using the decoded version enables a channel switching time for switching to the selected meta-channel to be less than half a second; and

controlling the media system to render content defined by the selected meta-channel without using the decoded version of the content stored in the second electronic storage results in a channel switching time for switching to the selected meta-channel that is greater than half a second.

4. The method of claim 1 wherein controlling the media system comprises:

initially using the decoded version of the content stored in the second electronic storage to render the content defined by the selected meta-channel;

triggering a process to render an original version, other than the decoded version, of the content defined by the selected meta-channel, the process to render the original version of the content defined by the selected meta-channel having a longer delay to begin rendering of the content than initially using the decoded version of the content; and

when the original version of the content defined by the selected meta-channel is ready for rendering, transitioning from using the decoded version of the content to using the original version of the content.

5. The method of claim 4 wherein transitioning from using the decoded version of the content to using the original version of the content comprises:

identifying an amount of content that has been rendered using the decoded version of the content;

identifying a transition point in the original version of the content that corresponds to the amount of content that has been rendered using the decoded version of the content; and

beginning using the original version of the content at the transition point to enable smooth transition from the decoded version of the content to the original version of the content.

6. The method of claim 4 wherein triggering the process to render the original version, other than the decoded version, of the content defined by the selected meta-channel comprises decoding the original version of the content defined by the selected meta-channel using a video codec.

7. The method of claim 6 wherein triggering the process to render the original version, other than the decoded version, of the content defined by the selected meta-channel further comprises:

sending, over a network, a request to a content provider serving the original version of the content defined by the selected meta-channel; and

downloading, over the network from the content provider, the original version of the content defined by the selected meta-channel.

14. The method of claim 1 wherein selecting the subset of the multiple meta-channels comprises selecting a plurality of the multiple meta-channels.

15. The method of claim 14 wherein selecting the plurality of the multiple meta-channels comprises:

selecting a first meta-channel that defines a first Internet video; and

selecting a second meta-channel that defines a second Internet video, the second meta-channel being different than the first meta-channel and the second Internet video being different than the first Internet video.

16. The method of claim 15 wherein storing a decoded version of the content defined by each of the meta-channels included in the selected subset of meta-channels comprises:

determining a portion of the first Internet video to store based on time needed to render the first Internet video without caching, the portion of the first Internet video being less than all of the first Internet video;

caching a decoded version of the determined portion of the first Internet video prior to rendering;

determining a portion of the second Internet video to store based on time needed to render the second Internet video without caching, the portion of the second Internet video being less than all of the second Internet video and being larger than the portion of the first Internet video; and

caching a decoded version of the determined portion of the second Internet video prior to rendering.

17. The method of claim 16, further comprising:

determining that a particular time frame related to rendering the first Internet video and the second Internet video has passed; and

based on the determination that the particular time frame has passed, removing, from the second electronic storage device, the decoded version of the determined portion of the first Internet video and the decoded version of the determined portion of the second Internet video.

18. The method of claim 17 wherein at least one of the decoded version of the determined portion of the first Internet video and the decoded version of the determined portion of the second Internet video is removed without having been rendered by the media system.

8. A method of enabling a media system to render content, the method comprising:

storing, in first electronic storage, meta-channel information defining multiple meta-channels that identify content entries and that indicate an order with which to experience the content entries;

accessing, from the meta-channel information stored in the first electronic storage, content entries corresponding to content defined by each of the multiple meta-channels for a particular time frame, the accessed content entries including at least one content entry that relates to a first type of content broadcast by a content provider at a specific time and at least one content entry that relates to a second type of content made available, over a network, by a content provider in response to user requests;

based on the accessed content entries, identifying a type of content defined by each of the multiple meta-channels for the particular time frame;

based on the identified type of content defined by each of the multiple meta-channels for the particular time frame, selecting a subset of the multiple meta-channels, the selected subset of meta-channels each defining, for the particular time frame, the second type of content made available, over a network, by a content provider in response to user requests;

storing, in second electronic storage associated with a media system of a user, a decoded version of the content defined for the particular time frame by each of the meta-channels included in the selected subset of meta-channels; and

in response to selection, by the user during the particular time frame, of one of the meta-channels included in the selected subset of meta-channels, controlling the media system to render content defined by the selected meta-channel using the decoded version of the content stored in the second electronic storage associated with the media system of the use,

wherein selecting the subset of the multiple meta-channels comprises;

identifying the multiple meta-channels that define, for the particular time frame, the second type of content made available, over a network, by a content provider in response to user requests and for which a time needed to begin rendering content defined by the meta-channel without storing, in the second electronic storage associated with the media system of the user, a decoded version of the content exceeds a threshold time;

for each of the identified meta-channels, determining an amount of content needed to be stored, in the second electronic storage associated with the media system of the user, to enable transition from using a decoded version of the content to using an original version of the content without a break in content rendering;

determining whether the second electronic storage associated with the media system of the user has the ability to store the determined amount of content for each of the identified meta-channels prior to the particular time frame;

conditioned on determining that the second electronic storage associated with the media system of the user has the ability to store the determined amount of content for each of the identified meta-channels prior to the particular time frame, selecting all of the identified meta-channels as the subset of the multiple meta-channels; and

conditioned on determining that the second electronic storage associated with the media system of the user does not have the ability to store the determined amount of content for each of the identified meta-channels prior to the particular time frame, selecting a subset of the identified meta-channels as the subset of the multiple meta-channels.

9. The method of claim 8 wherein determining whether the second electronic storage associated with the media system of the user has the ability to store the determined amount of content for each of the identified meta-channels prior to the particular time frame comprises determining whether the amount of content for the identified meta-channels exceeds an amount of available storage in the second electronic storage associated with the media system of the user.

10. The method of claim 8 wherein determining whether the second electronic storage associated with the media system of the user has the ability to store the determined amount of content for each of the identified meta-channels prior to the particular time frame comprises determining whether an amount of time remaining until a start of the particular time frame exceeds an amount of time needed for the media system to download, decode, and store the determined amount of content for each of the identified meta-channels.

11. The method of claim 8 wherein selecting the subset of the identified meta-channels as the subset of the multiple meta-channels comprises:

identifying combinations of the identified meta-channels for which the second electronic storage associated with the media system of the user has the ability to store, prior to the particular time frame, the determined amount of content for each of the meta-channels included in the combination; and

selecting, from among the identified combinations, a combination of the identified meta-channels that includes the highest number of channels.

12. The method of claim 8 wherein selecting the subset of the identified meta-channels as the subset of the multiple meta-channels comprises:

accessing historical viewing patterns that indicate one or more categories of content the user has experienced during past time frames that are similar to the particular time frame;

comparing the content defined by each of the identified meta-channels to the accessed historical viewing patterns;

determining a subset of the identified meta-channels that the user is mostly to experience during the particular time frame based on the comparison of the content defined by each of the identified meta-channels to the accessed historical viewing patterns; and

selecting the determined subset of the identified meta-channels.

13. The method of claim 8 wherein selecting the subset of the identified meta-channels as the subset of the multiple meta-channels comprises:

determining a meta-channel being experienced by the user at the time of selecting;

accessing information that identifies one or more meta-channels the user typically selects subsequent to experiencing the meta-channel being experienced by the user at the time of selecting;

comparing the accessed information to the identified meta-channels;

determining a subset of the identified meta-channels that the user is most likely to experience during the particular time frame based on the comparison of the accessed information to the identified meta-channels; and

selecting the determined subset of the identified meta-channels.

19. A method of enabling a media system to render content, the method comprising:

storing, in first electronic storage, meta-channel information defining multiple meta-channels that identify content entries and that indicate an order with which to experience the content entries;

accessing, from the meta-channel information stored in the first electronic storage, content entries corresponding to content defined by each of the multiple meta-channels, the accessed content entries including at least one content entry that relates to a first type of content and at least one content entry that relates to a second type of content;

based on the accessed content entries, identifying a type of content defined by each of the multiple meta-channels;

based on the identified type of content defined by each of the multiple meta-channels, selecting a subset of the multiple meta-channels, the selected subset of meta-channels each defining the second type of content;

storing, in second electronic storage associated with a media system of a user, a decoded version of the content defined by each of the meta-channels included in the selected subset of meta-channels; and

in response to selection, by the user, of one of the meta-channels included in the selected subset of meta-channels, controlling the media system to render content defined by the selected meta-channel using the decoded version of the content stored in the second electronic storage associated with the media system of the user,

wherein selecting the subset of the multiple meta-channels comprises;

determining that it is not possible to cache portions of all Internet videos scheduled for rendering; and

based on the determination that it is not possible to cache portions of all Internet videos scheduled for rendering, selecting meta-channels corresponding to a subset of the Internet videos scheduled for rendering.

20. The method of claim 19 wherein determining that it is not possible to cache portions of all Internet videos scheduled for rendering comprises determining that the second electronic storage device associated with the media system of the user does not have enough space to store portions of all Internet videos scheduled for rendering.

21. The method of claim 19 wherein determining that it is not possible to cache portions of all Internet videos scheduled for rendering comprises determining that, between a current time and a particular time frame at which the Internet videos are scheduled to be rendered, insufficient time exists to download and transcode portions of all Internet videos scheduled for the particular time frame.

22. The method of claim 19, further comprising:

detecting ending of at least a portion of a first Internet video included in the subset of the Internet videos cached in the second electronic storage device associated with the media system of the user;

clearing the portion of the first Internet video from the second electronic storage device associated with the media system of the user;

in response to the clearing of the portion of the first Internet video from the second electronic storage device associated with the media system of the user;

selecting a new meta-channel that was not previously selected and that defines a previously-uncached Internet video; and

caching at least a portion of the previously-uncached Internet video.

23. The method of claim 22:

wherein detecting ending of at least a portion of the first Internet video in the subset of the Internet videos cached in the second electronic storage device associated with the media system of the user comprises detecting ending of the portion of the first Internet video; and

wherein clearing the portion of the first Internet video from the second electronic storage device associated with the media system of the user comprises clearing the portion of the first Internet video even though an original version of the first Internet video is still being rendered by the media system.