KR970701973A - Video signal coding method and video coder / decoder - Google Patents

Abstract

The present invention relates to the encoding of a video signal, wherein the method of a video signal representing a moving picture comprises at least one other set representing a first set of digital signals representing a first sequence of frames of the video signal and another sequence of frames of the video signal. Generating a set, wherein the other sequence comprises m + 1, m + 2n, m + 3n... Where n is an integer other than 0 or 1. The or each other sequence of frames may be a subset of the first sequence, and an interactive video system may be accessed and transmitted as a user's request without further processing of the digital signal.

[Selectivity: FIG. 1]

Description

Video signal coding method and audio coder / decoder

Since this is an open matter, no full text was included.

1 is an encoder according to the present invention,

FIG. 2 is a schematic diagram showing coded sequences made by the encoder of FIG. 1,

3 is an interactive video system according to the present invention.

Claims (18)

A method of encoding a video signal representing a moving image, comprising: generating a first set of digital signals representing a first sequence of frames of a video signal and at least one other set of digital signals representing another sequence of frames of the video signals And the other sequence includes m + n, m + 2n, m + 3n, m + 4n, ... of the video signal. And n is an integer other than 0 or 1, wherein the frame is a frame. 2. The method of claim 1, wherein said other sequence of frames is a subset of said frame represented by said first sequence. 3. A method according to claim 1 or 2, wherein said first set of digital signals represents every frame of said video signal. The video signal encoding method according to any one of claims 1 to 3, wherein each sequence is generated by the same encoding method. The video signal encoding method according to any one of claims 1 to 4, wherein the sequences are generated using inter-frame difference coding. Switching means for switching between a first sequential file and a second sequential file of the recording medium; A position calculator for recording the current position in the sequence file being operated; And means for determining a corresponding position on the other sequential file in response to the position calculator and the information stored on the recording medium. 7. The apparatus according to claim 6, wherein said determining means, in response to information stored on said recording medium relating to the length of said sequential file, calculates a ratio of the length of said sequential file operated by said current position in said sequential file, And calculating the position in the other sequential file at a ratio equal to the length of the other sequential file. 7. The apparatus according to claim 6, wherein said determining means, in response to information stored on said recording medium relating to the length of said sequential file, calculates a remaining ratio of the length of said sequential file operated by said current position in said sequential file. And calculate the position in the other sequential file that matches the remaining proportion of the operated sequential file. The apparatus of claim 6, further comprising: means for processing a signal from at least one remote location; Means for accessing a sequential file on the recording medium, the means for responding to a signal from a remote location; And means for outputting a suitable signal for transmission to said remote location. A first set of encoded digital signals representing a first sequence of frames of a video signal and a second set of encoded digital signals representing a second different sequence of frames are recorded, wherein each frame of the second sequence is a frame within the first frame. Wherein each frame of the second sequence (not the last sequence) is preceded by a frame other than the frame following the frame in the first sequence. 11. The data carrier of claim 10, wherein said second sequence of frames is a subset of said first sequence. 11. The method of claim 10, wherein frame k + 1 follows each frame k in the first sequence, and frame m + n follows each frame m in the second sequence, where n is a positive or negative integer greater than zero or one. Characterized by a data carrier. 13. A data carrier as claimed in any of claims 10 to 12, wherein in use each set of digital signals is read from the data carrier according to the same decoding algorithm. A pre-processor for selecting a frame of the video signal; A first set of digital signals representing a first sequence of frames of the video signal and m, m + n, m + 2n, m + 3n... Encoding means for generating at least one other set of digital signals representing different sequences of frames; And means for recording the sequence on a data carrier, wherein n is an integer other than zero or one. 15. The video encoder of claim 14, wherein another sequence of digital signals represents a sequence of frames that is a subset of the first sequence. 16. The video encoder of claim 14 or 15, wherein said video encoder is operable to encode every frame of a video signal to generate said first sequence. 17. The video encoder of claim 16, wherein the first sequence indicates an operation mode of the video signal, and the other sequence indicates a fast forward mode. 18. The video encoder according to any one of claims 14 to 17, wherein the encoding means includes inter-frame difference encoding means. ※ Note: The disclosure is based on the initial application.