Abstract: A method, device and system for broadcast service grouping are provided. The method includes: receiving, by a terminal, at least one virtual channel table delivered by a network side, where the virtual channel table includes a first checksum and a data object that are generated by the network side, and the data object includes channel information; using a preset broadcast service group identifier and the data object of the virtual channel table to acquire a second checksum of the preset broadcast service group identifier and the data object of the virtual channel table; and acquiring a virtual channel table that passes check from the at least one virtual channel table delivered by the network side, when the first checksum matches the second checksum.

Abstract: A method, a device and a system for implementing seeking play of stream media are provided. The method for implementing seeking play of stream media includes: sending a seeking play request to a stream media server; receiving preview key frames for seeking play sent from the stream media server according to a predefined buffer capacity range and storing the preview key frames for seeking play; displaying the preview key frames for seeking play; and initiating a stream media play according to preview key frames selected by a seeking of a user. This invention can improve the seeking operation experience of the user, control the downloading time of the extracted program, and reduce requirements of storage capability of the stream media terminal.

Abstract: A method, a recording terminal, a server, and a system for repairing media file recording errors are disclosed in embodiments of the present invention. The method includes: generating description information about a recording error when a recording terminal identifies the recording error in live recording of a media file; sending a recording error repair request that carries the description information to a network device; and repairing the media file recorded by the recording terminal according to repair information when receiving the repair information sent by the network device according to the description information. With the present invention, the recording errors are repaired through a bidirectional network between the recording terminal and the network device, and reliability of repairing the recording errors is ensured.

Abstract: A method for implementing audio connector interface conversion is provided in an embodiment of the present invention. The method includes installing a 4-pin jack of an audio connector inside a terminal device, and connecting the power end, signal end, and grounding end of an infrared interface on the terminal service control unit and the serial signal transmitting end, serial signal receiving end, power end, and grounding end on the terminal service control unit directly or through a logical circuit unit to the four connecting ends on the jack of the audio connector. In the technical scheme provided in an embodiment of the present invention, control and switching can be performed on the basis of the working mode, so that the electronic terminal device with an audio interface can use its audio interface to provide an infrared signal interface and a serial communication port.

Abstract: A method, device and system for broadcast service grouping are provided. The method includes: receiving, by a terminal, at least one virtual channel table delivered by a network side, where the virtual channel table includes a first checksum and a data object that are generated by the network side, and the data object includes channel information; using a preset broadcast service group identifier and the data object of the virtual channel table to acquire a second checksum of the preset broadcast service group identifier and the data object of the virtual channel table; and acquiring a virtual channel table that passes check from the at least one virtual channel table delivered by the network side, when the first checksum matches the second checksum.

Abstract: A method, a recording terminal, a server, and a system for repairing media file recording errors are disclosed in embodiments of the present invention. The method includes: generating description information about a recording error when a recording terminal identifies the recording error in live recording of a media file; sending a recording error repair request that carries the description information to a network device; and repairing the media file recorded by the recording terminal according to repair information when receiving the repair information sent by the network device according to the description information. With the present invention, the recording errors are repaired through a bidirectional network between the recording terminal and the network device, and reliability of repairing the recording errors is ensured.

Abstract: A method for implementing audio connector interface conversion is provided in an embodiment of the present invention. The method includes installing a 4-pin jack of an audio connector inside a terminal device, and connecting the power end, signal end, and grounding end of an infrared interface on the terminal service control unit and the serial signal transmitting end, serial signal receiving end, power end, and grounding end on the terminal service control unit directly or through a logical circuit unit to the four connecting ends on the jack of the audio connector. In the technical scheme provided in an embodiment of the present invention, control and switching can be performed on the basis of the working mode, so that the electronic terminal device with an audio interface can use its audio interface to provide an infrared signal interface and a serial communication port.

Abstract: A method for starting an Internet Protocol Television (IPTV) service is provided, which includes the following steps. Before the terminal accesses an IP network, an Internet Group Management Protocol (IGMP)-based join request message carrying multicast program channel data is sent via a physical link connection. Then, a media stream of a multicast group which the join request message requests to join in is acquired. A device and a system for starting an IPTV service and an IPTV terminal are also provided. The IPTV service startup speed is accelerated, and the time spent on waiting for the startup of the IPTV services is shortened.

Abstract: A method, a device and a system for implementing seeking play of stream media are provided. The method for implementing seeking play of stream media includes: sending a seeking play request to a stream media server; receiving preview key frames for seeking play sent from the stream media server according to a predefined buffer capacity range and storing the preview key frames for seeking play; displaying the preview key frames for seeking play; and initiating a stream media play according to preview key frames selected by a seeking of a user. This invention can improve the seeking operation experience of the user, control the downloading time of the extracted program, and reduce requirements of storage capability of the stream media terminal.

Abstract: A method for controlling the data flow of the time-shift TV is disreleased and includes: establishing and holding a control channel between a playing terminal and a media server; transmitting a time-shift playing command to the media server by the playing terminal through the control channel; and upon receiving the time-shift playing command, performing a operation corresponding to the time-shift playing command by the media server. A playing terminal, a media server and a time-shift TV system are also disreleased. Using the control channel, the time-shift playing command can be transmitted to the media server and the time-shift player can transmit the time-shift data flow and the live data flow to the playing terminal, improving the speed of implementing the time-shift playing, providing better experiences for subscribers and being good for the development and application of the time-shift TV technique.