METHOD AND DEVICE OPERABLE TO STORE VIDEO AND AUDIO DATA

• US 20150128197A1
• Filed: 05/01/2014
• Published: 05/07/2015
• Est. Priority Date: 11/05/2013
• Status: Active Grant

• Current Assignee: Industrial Technology Research Institute
• Original Assignee: Industrial Technology Research Institute
• Inventors: SU, Yi-Yu, LO, Chi-Wen
• Granted Patent: US 10,165,331 B2
• Time in Patent Office: Days
• US Class Current: 725/100
• CPC Class Codes: H04N 21/23116 involving data replication, e.g. over plural servers synchronization of replicated data G06F11/1658; error detection or correction by means of data replication G06F11/2053; replication in distributed file systems G06F16/10; replication in distributed file systems G06F16/27; replication or mirroring of data in data networks H04L67/1095
• CPC Class Codes: H04N 21/433 Content storage operation, e.g. storage operation in response to a pause request, caching operations
• CPC Class Codes: H04N 21/437 Interfacing the upstream path of the transmission network, e.g. for transmitting client requests to a VOD server flow control in data networks H04L47/10; streaming protocols, e.g. RTP or RTCP, H04L65/65; scheduling or organising the servicing of application requests in data packet switching networks H04L67/60
• 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 21/47202 for requesting content on demand, e.g. video on demand
• CPC Class Codes: H04N 21/4788 communicating with other users, e.g. chatting arrangements for providing for computer conferences, e.g. chat rooms, to substation in data switching networks H04L12/1813; distributed application using peer-to-peer [P2P] networks H04L67/104
• CPC Class Codes: H04N 21/632 using a connection between clients on a wide area network, e.g. setting up a peer-to-peer communication via Internet for retrieving video segments from the hard-disk of other client devices broadcast-related systems characterised by transmission among terminal devices H04H60/80; distributed application using peer-to-peer [P2P] networks H04L67/104

Abstract

According to one exemplary embodiment, a method operable to store video data and/or audio data is adapted to a first peer of a video and audio data system having a plurality of peers, and each peer has a corresponding storage space. In the method, before the first peer has not received a service request of a second peer of the plurality of peers, determines whether the video and audio data received by the first peer is stored in its corresponding storage space with a dynamically adjustable first video and audio storing probability, and extends a time interval of the first peer for storing received video and audio data; and when the first peer receives the service request of the second peer, sets a second video and audio storing probability. Thereby the second peer obtains at least one stored video and audio data from the first peer.

Claims

1. A method operable to store video and audio data, and adapted to a first peer of a video and audio data system having a plurality of peers, wherein each peer has a corresponding storage space, the method comprising:

before the first peer has not received a service request of a second peer of the plurality of peers, determining whether at least one video and audio data received by the first peer is stored in its corresponding storage space, by using a first video and audio storing probability that is dynamically adjustable, and extending a time interval of the first peer for storing at least one received video and audio data; and

when the first peer receives the service request of the second peer, setting a second video and audio storing probability, thereby the second peer obtaining at least one stored video and audio data from the first peer.

2. The method as claimed in claim 1, wherein when the first peer has not received the service request from the second peer, the first peer receives the at least one video and audio data from a server or at least one other peer of the plurality of peers.

3. The method as claimed in claim 1, wherein when the first peer does not receive the service request from the second peer, the first peer adjusts the first video and audio storing probability in a waiting cycle of a waiting phase, and continues to wait for a next waiting cycle to check whether the service request of other peer of the plurality of peers is received.

4. The method as claimed in claim 1, wherein when the first peer receives the service request from the second peer, it sets the second video storing probability in a service cycle of a service phase.

5. The method as claimed in claim 1, wherein the second video and audio storing probability is set based on a service interval, a video and audio data bit rate, and a storage space limitation.

6. The method as claimed in claim 5, wherein the service interval represents a time length between two time points, wherein one of the two time point is a playing time point of latest data in a storage space corresponding to the first peer, and the other time point is a playing time point of the first peer storing the video and audio data in a specific cycle requested by the second peer.

7. The method as claimed in claim 1, wherein the first peer is a device with a limited storage space.

8. The method as claimed in claim 3, wherein the waiting phase includes at least one waiting cycle, and in each of the at least one waiting cycle, the first peer uses a parameter α

, 0≦

α

≦

1, to adjust the first video and audio storing probability.

9. The method as claimed in claim 1, wherein the first video storing probability and the second video storing probability are two dynamically adjustable probabilities for storing the at least one video and audio data, and the two probabilities are less than or equal to 1 and greater than or equal to 0.

10. The method as claimed in claim 1, wherein said method is executed by a processor of the first peer, and the storage space corresponding to the first peer is a storage medium of the first peer.

11. A device operable to store video and audio data, adapted to a first peer of a video and audio data system having a plurality of peers, and the device comprising:

a processor; and

a storage medium;

wherein the processor performs;

before the first peer has not received a service request of a second peer of the plurality of peers, determining whether at least one video and audio data received by the first peer is stored in the storage medium, by using a first video and audio storing probability that is dynamically adjustable, and extending a time interval of the first peer for storing at least one received video and audio data; and

when the first peer receives the service request of the second peer, setting a second video and audio storing probability;

thereby the second peer obtaining at least one stored video and audio data from the first peer.

12. The device as claimed in claim 11, wherein the processor and the storage medium are two components of a storage module of a plurality of modules of the first peer.

13. The device as claimed in claim 11, wherein the first peer is a device with a limited storage space.

14. The device as claimed in claim 11, wherein in the plurality of peers of the video and audio data system, the device provides a P2P sharing service of the at least one video and audio data.

15. The device as claimed in claim 11, wherein the first video storing probability and the second video storing probability are two dynamically adjustable probabilities for storing the at least one video and audio data, and the two probabilities are less than or equal to 1 and greater than or equal to 0.

16. The device as claimed in claim 11, wherein the processor refers to a service interval, a video and audio data bit rate, and a storage space limitation, to set the second video and audio storing probability.