TH68089A - Methods and encoding devices that achieve rapid channel changeover of recorded video. - Google Patents

Abstract

DC60 (07/09/45), video encoders (100, 300, 500) and corresponding methods (800) have been described. To achieve a fast channel change of recorded video where the input Video code (100, 300, 500) for receiving input images and to provide the received stream information. The recording includes regular encoding sections (130, 330, 530) for receiving input images and for Provides normal stream data. Lower quality encoders (140, 340, 540) for input image acquisition and provision of transponder flow information and multiplexers (150, 350, 550) in signal communications. With each part of the normal part and Lower quality sections for receiving and merging normal streams and transitions video encoder streams. (100,300,500) and the corresponding method (800) have been described. To achieve fast channel switching of recorded video, where video codecs (100, 300, 500) for input image acquisition and to provide the received stream information. The recording includes regular encoding sections (130, 330, 530) for Wednesday image capture and for Provides normal stream data. Lower quality encoders (140, 340, 540) for Wednesday image capture and for the provision of transponder streams and multiplexers (150, 350, 550) in signal communication with Each part of the normal part and Lower quality section for receiving and merging normal and switching streams.

Claims (5)

1. Video Encoders (100) for receiving input images and for preparing the received stream information. The compression which the encoder consists of Normal encoding (130) for receiving input images and for preparing normal stream data, lower quality encoding (140) for receiving input images and for preparation. The transponder and multiplexer (150) data in the signal communication with each segment from the quality section. Normal and lower quality sections for receiving and mixing normal and stream streams. 2. Video Encoder as described in Clause 1, which also includes: A low pass filter (332) in signal communication with a lower quality encoding segment (340) to provide a low-pass filtered input image to the encoding segment. Lower quality 3. The video encoder as described in Clause 1, which also includes The downward sampling unit (534) in signal communication with the lower quality encoding section (540) to provide the down-sampled input image to the lower-quality encoding segment. 4. Video encoder as described in Clause 1, which also contains A device for generating a transponder flow. Along with the pictures that have been entered An intrinsic code with a higher frequency in the corresponding normal current than in the corresponding normal stream. 5. Video encoders, as noted in Clause 4, which also include: Device for downstream sampling to visualize the transition stream Lower resolution 6. Video encoder as described in Claim 1, which also includes JVT compliant syntax encoder device 7. Video encoder as described in Clause 1, which also includes: Device for image encoding, channel transitions to compliant user data. Corresponding normal stream image 8. The video encoder as described in Claim 1, which also contains A device for transmitting the signal to the encoder using either a normal current image or an image. The channel switching stream for the segment-encoded image in the current Change the channel that follows later 9. The video encoder as described in Clause 1, which also includes Image options for signaling connections with lower quality encoding segments for better Selects a subset of the input image to encode in the channel switching stream 1 0. One (800) video encoding method for obtaining input images and for data preparation. Compressed currents and methods consisting of Receiving the input image (812) Encoding the normal stream data from the received input image (8147 Coding the switching signal stream from the received input image (816) in which the data stream The said channel change contains information that has been Encoding of lower quality than normal stream data and multiplexing normal stream and converting the input channel to the combined output-output stream (818) 11 video encoding methods as has been specified. In Clause 10, which additionally includes With at least one of Frequency generation of segment-encoded image transitions In the channel changing stream than the corresponding normal current Downstream sampling to generate lower resolution channel transition visualization, syntax encoding, redundant images compatible with the JVT standard, symbolic channel transition image encoding to the user data of the corresponding normal stream image. And sending a signal to the decoder whether it provides a normal current or a transition The channel for segment-encoded images in the channel change stream. Post-follow signal 1 2. The video encoding method as described in Clause 10, which additionally includes By selecting a subset of the input image to be encoded in the transition stream 1 3.Video encoding device for receiving input images and for preparing the output stream. Get a compression, which includes Device for receiving input images A device for encoding a normal stream of information from a received input image. A device for encoding the transponder stream data from the received input image, which contains the transposed data. The encoder of quality is lower than that of the normal data stream and devices for the normal combination of stream and channel switching streams. Signal to is merged output current 1 4. The digital video disc is encoded with a signal containing a coefficient. Block transformation for each normal stream data segment and transposition coefficient data stream, which indicates the original signal sequence. Normal stream data of Digital sidio discs with coefficients that define their nature, sequence, normal quality and The channel transition flow of a digital video disc has a coefficient that Define the nature of the sequence of reduced quality data. Sequence of quality data that Has been reduced containing an additional internally encrypted image At least one picture 1 5. Digital video discs, as stated in Clause 14, the order of your information The reduced image is encrypted in the said visual user data.