Program guiding information generating device and television receiver

Abstract

The invention relates to sign information generation equipment and a television receiving device. The sign information generation equipment comprises an unpacker, a demultiplexer, a channel information controller, a frame selector, a multiplexer and a packer, wherein the unpacker unpacks a data packet into a television programme multiplexing stream; the demultiplexer demultiplexes a video stream and channel information from the television programme multiplexing stream; the channel information controller generates sign channel information according to the channel information; the frame selector selects a plurality of frames from the video stream; the multiplexer multiplexes the selected frames and the sign channel information into an information stream of a sign channel; and the packer packs the information stream of the sign channel into a data packet added with the sign information.

Description

technical field [0001] The present invention relates to digital television, video coding technology and transmission technology, especially processing the transmission IP packet on the IPTV transmission network node, generating a program guide channel containing still and moving images, and decoding and displaying it in the receiving terminal technology. Background technique [0002] IPTV is a digital television system based on Internet Protocol (IP) over a broadband network for signal transmission. At the sending end, digitized video, audio and other data signals are compressed into specific encoding formats, such as MPEG-2 video, MPEG-4 video, H.264, AAC audio format and SI, etc. These data formats help reduce the bit rate of the original signal. Furthermore, they are segmented and packaged according to a specific format to maintain synchronization between data, network performance and overall bit rate control. Such packaging formats include MPEG-2TS, RTP or RTSP packet...

AI Technical Summary

Problems solved by technology

If the TV broadcast network has more than one provider, the user must receive multiple guide channels, and switching between these channels is inconvenient

At the same time, once the guide channel is generated, it cannot adapt to different subscriber groups at different locations in the network. If the guide channel is specially generated for each subscriber group, it will occupy a large number of channels at the sending end

Moreover, the added guidance information channel will occupy the entire bandwidth from the sending end to the receiving end, and most of the lines are not directly connected to the receiver

In another case where the receiving end is implemented, in order to provide real-time multi-channel still or moving picture thumbnails, the guide function placed in the receiver requires additional demodulators, demultiplexers and video decoders, which significantly increases receiver complexity

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