TH33785B - Devices and Methods for Digital Video Encoding - Google Patents

Abstract

Digital video encoders and decoders operate to enable To have a reproduction at high and low speeds of digital video data encoded at variable rates by transcoding and decoding intraframe encoding frame which is identified by the encryption framework. Previously replicated intraframes In encoders, for example, digital video data encoded with variable rate The input point, encode the interframe and the intraframe (i.e., the starting position) of the video data encoded to the selected cipher. will be specified and which will represent the video frame produced at a pre-determined time interval. (eg 1, 2, and 4s) in a video of the specified input point data. These locations are generated and added to the encrypted video data before the video data is created. recorded on one recording medium When the encrypted data is extracted from the recording medium, the input point data is extracted from that section. and is stored intraframe encoding frame The sequence identified by the extracted input point data is replicated and decrypted. invention will still Provided for one recording medium On which there is an encrypted digital video signal. and will still be provided for the corresponding decoders and encoders. which will encrypt and decrypt in order of digital audio and still images within which there is an entry point to refer to each slide and still Refers to a specific duration of audio data.

Claims (8)

1. A device for encoding a bit stream of a number of digital still images and audio data. That includes A path (1,2) for encoding the bit stream of a number of digital still images and audio data. With variable rates To produce data encoded at variable rates Route (31) for identifying the points of entry representing various positions. In the slides in the aforementioned encoded data, the method (8,32) for generating various locating entry points is Of the specified entry point In the said encrypted data The path (6,7) for adding the generated input point data to the said encoded data and the route for saving the encrypted data with the generated input point was added. Onto the recording medium (10), where the input point data is composed of a number of input packages (B), which are recorded with encoded data at a predetermined transient duration of the audio data by Each of the certain admission packages (B) indicates the location of the previous slide. Direct and the slide that follows the next image. 2. Device according to claim 1, in which the encryption method includes Route (1) for digital still image encoding and path (2) for encoding audio data with variable rate. 3. Equipment according to claim 1 or 2, where the entry point information is included with the package Receive (B) that is inserted into the encrypted bit stream at a predetermined transient period. Of audio data 4. The device according to claim 3, in which the input point data is composed of an input package (A) when the input package (A) is inserted into the encrypted bit stream immediately before each slide. 5.A method for encoding a bit stream of a number of digital still images and audio data. That includes the steps of Encoding (1,2) bit stream of a number of digital still images and audio data at a Variable to produce coded data at variable rates Identification of (31) points of entry representing positions In the slide in the encrypted data Creation of (8,32) Entry Point data specifying the locations of the Entry Point identified in the Encrypted Data Adding (6,7) the generated Entry Point data to the Encrypted Data and the Encrypted Recordings. With the generated input point data added on the medium Used to record (10) in which the entry point data is made up of a number of admission packages (B) which are Recorded with encoded data at a predetermined transient duration of the audio data, with each input pack (B) directly indicating the location of the previous slide and the slide that was recorded. Following the next picture 6.Method according to claim 5, in which the encoding process consists of encoding (1) digital still images and encoding of audio data at variable rates (2). 7. Methods according to claim 5 or 6 in which the information of the entry point includes an admission package. (B) that was interpolated in the encoded bit stream at a predetermined transient duration of the audio data. 8. Method according to claim 7 in which the input point data is composed of an input package (A) when the input package (A) is inserted into the encrypted bit stream immediately before each slide. image