TH41402B - Decoding methods and devices that achieve fast channel switching of recorded video. - Google Patents

Abstract

DC60 (07/09/45) video decoders (200, 600, 700) and corresponding methods (900) have been described to achieve fast channel switching of the recorded video. Which video decoders (200, 600, 700) for receiving the compressed stream and to organize Prepare decompressed video output, including multiplexers (210, 610, 710) for receiving compressed stream information and for normal separation and switching streams. Normal decoding (212, 612, 712) in signal communication with a multiplex decoding to receive normal and compressed channel change streams and to Provides compression-reduced video output and normal frame storage in communication communications. Signal with normal decoding segment for storing reference images. Video decoders (200, 600, 700) and their corresponding methods (900) have been described to achieve fast channel switching of recorded video. Which video decoders (200, 600, 700) for receiving the compressed stream and to organize Prepare decompressed video output, including multiplexers (210, 610, 710) for receiving compressed stream information and for normal separation and switching streams. Normal decoding (212, 612, 712) in signal communication with a multiplex decoding to receive normal and compressed channel change streams and to Provides compression-reduced video output and normal frame storage in communication communications. Signal with normal decoding segment for storing reference images.

Claims (2)

1. Video Decoder (200) for getting the compressed stream for preparation. Export the reduced-compression video. The said decoder consists of 2. Video decoders as described in Clause 1, which also contains: Lower resolution decoding (618) in signal communication with the modal Tiplex to receive compressed channel change streams. Lower resolution decoding (618) in signal communication with demul-tiplex for receiving the compressed channel change stream. At least one transponder frame (620) is stored in the communication Signals with lower resolution decoding segments for stored reference images. Upward Sampling Unit (622) in signal communication with decoding section. Lower resolution for more sampling, reduced compression video data and Selective export of such data to at least one of the normal number of frames is stored. At least one location and at least one display. 3. Video decoder as described in Clause 1, which also includes: Post-processing filter (716) in signal communication with normal decoding section. For post-processing, reduced compression and output of video data Categorically say at least one of the number of normal frames to be stored. And at least one display segment 4. Video Decoder as described in Claim No. 1, which also contains A device for selecting images that have been compressed to decode from a certain number of streams. Normal Stream and Transition Stream 5. The video decoder, as described in Clause 4, also includes Equipment for up-to-date sampling, stream image, lower resolution channel transition. 6. Video decoder as described in Claim No. 1, which also includes: ITU-T H.264 [ISO / IEC MPEG 14496-10 syntax decoding device as well?] 7. Video decoder as described in Clause 1. Assemble With a device for decoding the image, changing the channel from the user data of the picture. Consistent normal stream 8. Video decoder, as described in Claim 1, which additionally contains A device in response to the signal from the encoder indicates that the normal current image is used. Or a transitional stream image for an internally encoded image 9. The video decoder, as outlined in Clause 4, also includes Equipment for postprocessing, normal decoder output, to reduce the Continuous transition from lower quality output to normal quality output 1 0. Video decoding method (900) for getting the compressed stream information and to provide Exporting videos that have been reduced to compression. Which the above methods consist of Receiving the compressed stream data (912) and the separation of the normal and normal current Switching channel (914) Receiving at least one current from the normal current and the switching channel at It has been recorded and provides a decompressed video output (916) and a reference image storage for use in decoding the encoded images. Between (918) 1 1. How to decode the video as described in Clause 10, which in addition Consists of at least one of Selection of compressed images to decode from one stream of normal current and From the current of changing the channel, which Take up samples, stream images, change channels, lower resolution. JVT-compliant image syntax decoding, decoding of the channel transition image from user data of the corresponding normal stream image, which responds to the signal from the encoder indicating that the normal stream image or image is used. The transponder stream for the internally encoded image. Post-channel switching and normal decoder post-output processing to reduce discontinuity. Of transition from lower quality output to normal quality output 1 2. The compressed digital video signal that contains One number of block conversion coefficients corresponding to the normal video quality stream and a second number of block conversion coefficients corresponding to the transition stream.