System and Method for Managing Cache Storage in Adaptive Video Streaming System
A plurality of encoded video segments that are stored in a cache memory and associated with every n th video segment in a sequence of video segments of a video program is selected, where n is an integer. The selected encoded video segments are removed from the cache memory. Each video segment in the sequence may be associated with a respective plurality of encoded video segments encoded at different respective encoding rates.
1 . A method for removing video data stored in a cache, the method comprising:
selecting a plurality of encoded video segments that are stored in a cache memory and associated with every n th video segment in a sequence of video segments of a video program, where n is an integer; and
removing the plurality of selected encoded video segments from the cache memory.
2 . The method of claim 1 , wherein each video segment in the sequence is associated with a respective plurality of encoded video segments encoded at different respective encoding rates.
3 . The method of claim 1 , wherein the step of selecting a plurality of encoded video segments comprises selecting encoded video segments that are stored in a cache memory and associated with every second video segment in a sequence of video segments of a video program.
4 . The method of claim 1 , wherein the cache memory comprises a random access memory in a cache device, the method further comprising:
storing the removed segments in a storage in the cache device that is different from the cache memory.
5 . The method of claim 1 , further comprising:
storing one or more second encoded video segments in the cache memory after removing the selected encoded video segments.
6 . An apparatus for removing video data stored in a cache, the apparatus comprising:
means for selecting a plurality of encoded video segments that are stored in a cache memory and associated with every n th video segment in a sequence of video segments of a video program, where n is an integer; and
means for removing the selected encoded video segments from the cache memory.
7 . The apparatus of claim 6 , wherein each video segment in the sequence is associated with a respective plurality of encoded video segments encoded at different respective encoding rates.
8 . The apparatus of claim 6 , wherein the means for selecting a plurality of encoded video segments comprises means for selecting encoded video segments stored in a cache memory associated with every 2 nd video segment in a sequence of video segments of a video program.
9 . The apparatus of claim 6 , wherein the cache memory comprises a random access memory in a cache device, the apparatus further comprising:
means for storing the removed segments in a storage in the cache device that is different from the cache memory.
10 . The apparatus of claim 6 , further comprising:
means for storing one or more second encoded video segments in the cache memory after removing the selected encoded video segments.
11 . A non-transitory computer readable medium having program instructions stored thereon, the instructions capable of execution by a processor and defining the steps of:
selecting a plurality of encoded video segments that are stored in a cache memory and associated with every n th video segment in a sequence of video segments of a video program, where n is an integer; and
removing the selected encoded video segments from the cache memory.
12 . The non-transitory computer readable medium of claim 11 , wherein each video segment in the sequence is associated with a respective plurality of encoded video segments encoded at different respective encoding rates.
13 . The non-transitory computer readable medium of claim 11 , wherein the instructions defining the step of selecting a plurality of encoded video segments further comprise instructions defining the step of selecting encoded video segments stored in a cache memory associated with every 2 nd video segment in a sequence of video segments of a video program.
14 . The non-transitory computer readable medium of claim 11 , wherein the cache memory comprises a random access memory in a cache device, wherein the instructions further comprise instructions defining the step of:
storing the removed segments in a storage in the cache device that is different from the cache memory.
15 . The non-transitory computer readable medium of claim 11 , further comprising instructions defining the step of:
storing one or more second encoded video segments in the cache memory after removing the selected encoded video segments.
16 . A method for removing video data stored in a cache, the method comprising:
selecting a plurality of encoded video segments that are stored in a cache memory and associated with n consecutive video segments in a sequence of video segments of a video program, in accordance with a predetermined repeating pattern, where n is an integer not exceeding a predetermined limit; and
removing the plurality of selected encoded video segments from the cache memory.
17 . The method of claim 16 , wherein each video segment in the sequence is associated with a respective plurality of encoded video segments encoded at different respective encoding rates.
18 . The method of claim 16 , wherein the cache memory comprises a random access memory in a cache device, the method further comprising:
storing the removed segments in a storage in the cache device that is different from the cache memory.
19 . The method of claim 16 , further comprising:
storing one or more second encoded video segments in the cache memory after removing the selected encoded video segments.
20 . A method for storing video data in a cache, the method comprising:
selecting a plurality of encoded video segments associated with every n th video segment in a sequence of video segments of a video program, where n is an integer; and
transmitting the plurality of selected encoded video segments to a cache memory.
21 . The method of claim 20 , wherein each video segment in the sequence is associated with a respective plurality of encoded video segments encoded at different respective encoding rates.
22 . The method of claim 20 , wherein the step of selecting a plurality of encoded video segments comprises selecting encoded video segments associated with every second video segment in a sequence of video segments of a video program.