Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
119 words
A compression method for interlaced moving image signals, comprising: a step that adopts an input frame image formed by a plural number of field images after dividing said input frame image into a plural number of input field images; a step that adopts a comparison frame image corresponding to said input frame image, after dividing said comparison frame image into a plural number of comparison field images; a step that detects a motion vector between said input image and each comparison field image that configures said comparison frame image; and a step that performs motion compensation prediction coding by selecting and using a minimum value for evalution of prediction error from said motion vector detected in said third step.
Claim 2
Dependent Claim
59 words
The compression method of claim 1, further comprising: a step of coding a motion vector value after transforming a value in a vertical direction in a motion vector obtained between said input field image and said comparison field image into a motion vector value between a comparison frame image and an input frame image as an interlaced frame image.
Claim 3
Dependent Claim
99 words
The compensation method of claim 1, wherein said plural number of field images are two field images constructing said frame, and further comprising: a step of coding said motion vector value by adding a value in a vertical dierection in a motion vector of said input field image corresponding to said comparison field image with one bit information which is formed at an undermost bit by multiplying twice said value in a vertical direction in a motion vector for estimating it either a motion vector with a first field image or a motion vector with a seconf field image.
Claim 4
Dependent Claim
122 words
A prediction coding method for interlaced moving image signals formed by one frame image by moving image signals divided into two fields, and comprising: a step that sets a reference frame for each predetermined frame interval; a step that performs intra-field coding so that a first field image signal of said reference frame are combined inside that field; a step that performs inter-field coding so that an image signal of a second field which,is another field of said reference frame are predicted from said first field; and a step that performs inter-frame coding, and corresponding to image signals of a field corresponding to a reference frame temporally either forward or after an image signal of a frame other than said reference frame.
Claim 5
Dependent Claim
37 words
The prediction coding method of claim 4, further comprising: a step for performing inter-field coding of image signals of said second field, corresponding to signals that are said first field image signals that have undergone coding processing.
Claim 6
Dependent Claim
53 words
The prediction coding method of claim 4, further comprising: a step for performing inter-frame coding of image signals of a frame other than said reference frame, corresponding to signals that are said image signals of a field corresponding to a reference frame temporally either forward or after and that have undergone coding processing.
Claim 7
Dependent Claim
29 words
The prediction coding method of claim 4, further comprising: a step for performing intra-field coding so that said second field of said reference frame are combined inside that field.
Claim 8
Dependent Claim
66 words
The prediction coding method of claim 7, further comprising: a step of outputting a prediction error value when an inter-field prediction is performed between said image signals of said first field of said reference frame and said second field of said reference frame; and a step of adaptively selecting,a performance of said second field either intra-field coding or inter-field coding corresponding to said prediction error value.