Time-shift program service method, equipment and system

Abstract

The invention discloses a time-shift program service method, time-shift program service equipment and a time-shift program service system, and belongs to the field of communication. The method comprises the following steps of: receiving a time-shift service request of a terminal user, wherein the time-shift service request comprises a time-shift program identifier and a request playing range; judging whether a fragmentation file corresponding to the request playing range is locally cached, and when the fragmentation file is cached, directly reading the cached fragmentation file corresponding to the request playing range; when the fragmentation file is not locally cached, acquiring a top-level index corresponding to the time-shift program identifier from a superior node according to the time-shift program identifier, wherein the top-level index comprises a time-shift program content playing range corresponding to the time-shift program identifier and fragmentation information; and acquiring the fragmentation file corresponding to the request playing range from the superior node according to the request playing range, the time-shift program content playing range and the fragmentation information. On the premise that a content distribution network (CDN) is not changed, the problems of waste of storage resources and network jam which are caused by different heats of contents on demand are solved.

Description

technical field [0001] The invention relates to the communication field, in particular to a time-shifting program service method, device and system. Background technique [0002] IPTV (Internet Protocol Television, Interactive Network Television) is the product of the development of network technology and media technology to a certain stage. Compared with traditional one-way broadcast TV, IPTV is not limited by the broadcast time when watching TV programs, realizing Interaction between media provider and consumer. [0003] The services provided by IPTV include TSTV (Time-Shift TV, instant time-shifted TV) and TVOD (TV On Demand, menu time-shifted TV). Among them, TSTV supports users to review the programs being played within a certain time range, and can support the pause, fast rewind, fast forward (fast forward from real time shift state to live state), positioning and switching of live programs , status display, time display and other operations. TVOD, also known as TV ...

AI Technical Summary

Problems solved by technology

[0009] In order to solve the problem of wasting storage resources or causing network congestion due to different popularity of on-demand content on the premise that the CDN network remains unchanged, the embodiment of the present invention provides a time-shifted program service method, device and system

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