Caching data from multiple channels simultaneously

• US 20050044570A1
• Filed: 08/20/2003
• Published: 02/24/2005
• Est. Priority Date: 08/20/2003
• Status: Abandoned Application

• Current Assignee: Sony Corporation (Sony Group Corp.), Sony Electronics Inc. (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.), Sony Electronics Inc. (Sony Group Corp.)
• Inventors: Poslinski, Thomas
• Application Number:
  US10/645,790
• Publication Number:
  US 20050044570A1
• Time in Patent Office: Days
• US Class Current: 725/48
• CPC Class Codes: H04N 21/4147 PVR [Personal Video Recorder] H04N5/76 takes precedence ; arrangements for broadcast with accumulation-type receivers H04H20/40
• CPC Class Codes: H04N 21/426 Internal components of the client ; Characteristics thereof H04N5/44 takes precedence
• CPC Class Codes: H04N 21/4263 involving specific tuning arrangements, e.g. two tuners
• CPC Class Codes: H04N 21/4316 for displaying supplemental content in a region of the screen, e.g. an advertisement in a separate window
• CPC Class Codes: H04N 21/4331 Caching operations, e.g. of an advertisement for later insertion during playback
• CPC Class Codes: H04N 21/4383 Accessing a communication channel
• CPC Class Codes: H04N 21/44016 involving splicing one content stream with another content stream, e.g. for substituting a video clip
• CPC Class Codes: H04N 21/440281 by altering the temporal resolution, e.g. by frame skipping television signal recording using magnetic recording on tape for reproducing at a rate different from the recording rate H04N5/783
• CPC Class Codes: H04N 21/4532 involving end-user characteristics, e.g. viewer profile, preferences monitoring of user activities for profile generation for accessing a video database G06F16/739; user profiles in network data switching protocols H04L67/306; processing of user preferences or user profiles in wireless networks H04W8/18
• CPC Class Codes: H04N 5/45 Picture in picture , e.g. displaying simultaneously another television channel in a region of the screen
• CPC Class Codes: H04N 5/76 Television signal recording
• CPC Class Codes: H04N 5/781 on disks or drums
• CPC Class Codes: H04N 5/783 Adaptations for reproducing at a rate different from the recording rate
• CPC Class Codes: H04N 5/85 on discs or drums
• CPC Class Codes: H04N 9/8042 involving data reduction

Abstract

Methods and systems for caching data from multiple channels simultaneously. Data specifying a set of channels and a prioritization of the set of channels is received. Channels from the set of channels are selected for which to assign tuners to and then cache data based on the prioritization. Data for the selected channels is cached simultaneously. The tuners may be within a set-top-box. Trick modes may be used to view portions of programs represented by the cached data.

Claims

1. A method of caching data from multiple channels simultaneously, the method comprising:

accessing data specifying a set of channels;

accessing data specifying a prioritization of the set of channels;

selecting channels for which to cache data from the set of channels based on the prioritization; and

caching data for the selected channels simultaneously.

2. The method of claim 1, wherein the set of channels are favorite channels.

3. The method of claim 1, further comprising:

performing a video operation to allow viewing the cached data.

4. The method of claim 1, further comprising:

receiving a switch operation from a first channel for which data is being cached to a second channel for which data is not being cached; and

in response to receiving the switch operation, de-allocating the data for the first channel.

5. The method of claim 4, wherein the first channel is a non-favorite channel.

6. The method of claim 1, further comprising:

receiving a switch operation from a first channel to a second channel, wherein data is being cached for both the first and second channels; and

in response to receiving the switch operation, maintaining the data that is being cached for the first channel.

7. The method of claim 6, wherein the first channel is a favorite channel.

8. The method of claim 1, wherein in response to caching capabilities from a first channel becoming available:

selecting the channels further comprises selecting a second channel with the highest priority of the channels that are not being cached; and

caching the data further comprises using the caching capabilities from the first channel to cache the data for the second channel.

9. The method of claim 1, further comprising:

receiving a request to cache data for a first channel for which data is not being cached;

selecting a second channel with the lowest priority to remove caching capabilities from; and

reassigning the caching capabilities to the first channel to satisfy the request to cache data for the first channel.

10. An electronic device comprising:

a memory unit; and

a processor coupled to the memory unit, the processor for executing a method for caching data from multiple channels simultaneously, the method comprising;

accessing data specifying a set of channels;

accessing data specifying a prioritization of the set of channels;

selecting channels for which to cache data from the set of channels based on the prioritization;

selecting channels for which to cache data from channels selected for viewing; and

caching data for the selected channels simultaneously.

11. The electronic device of claim 10, wherein the method further comprises:

receiving a switch operation from a first channel for which data is being cached to a second channel for which data is not being cached; and

in response to receiving the switch operation, de-allocating the data for the first channel.

12. The electronic device of claim 10, wherein the method further comprises:

receiving a switch operation from a first channel to a second channel, wherein data is being cached for both the first and second channels; and

in response to receiving the switch operation, maintaining the data that is being cached for the first channel.

13. The electronic device of claim 10, wherein in response to caching capabilities from a first channel becoming available:

selecting the channels further comprises selecting a second channel with the highest priority of the channels that are not being cached; and

caching the data further comprises using the caching capabilities from the first channel to cache the data for the second channel.

14. The electronic device of claim 10, wherein the method further comprises:

receiving a request to cache data for a first channel for which data is not being cached;

selecting a second channel with the lowest priority to remove caching capabilities from; and

reassigning the caching capabilities to the first channel to satisfy the request to cache data for the first channel.

15. The electronic device of claim 10, wherein the electronic device is a set-top box device and wherein the set of channels are favorite channels.

16. An electronic device comprising:

a plurality of tuners;

a memory storage device coupled to said plurality of tuners;

a memory-stored list of channels having a channel ordering; and

a processor for selecting a first set of channels in response to viewing requests and for assigning a first set of tuners thereto,

wherein said processor is also for selecting a second set of channels based on said list of channels and for assigning a second set of tuners thereto,

wherein said memory storage device simultaneously caches outputs of said first and second set of tuners.

17. An electronic device as described in claim 16 wherein said list of channels is a favorite channels list and wherein said channel ordering is a priority ordering of said favorite channels list.

18. An electronic device as described in claim 17 further comprising a remote data entry device and wherein said favorite channels list and said channel ordering are obtained from said remote data entry device.

19. An electronic device as described in claim 16 wherein said plurality of tuners is also for providing picture-in-picture capabilities for output to a display device and wherein further said first set of channels comprise:

a first channel selected for viewing on a main screen of said display device; and

a second channel selected for viewing as a picture-in-picture window on said display device.

20. An electronic device as described in claim 16 wherein said processor is also for altering said first and second set of channels in response to a channel change request regarding a channel to be viewed.

21. An electronic device as described in claim 16 wherein said processor alters said second set of channels in response to a change in said channel ordering.

22. An electronic device as described in claim 21 wherein said list of channels is a favorite channels list and wherein said channel ordering is a priority ordering of said favorite channels list.

23. An electronic device as described in claim 22 wherein said plurality of tuners is also for providing picture-in-picture capabilities for output to a display device.