Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
75 words
An efficient coding apparatus for use in a coding processing utilizing correlation between frames or fields of an image signal comprising: means for obtaining a signal component including a negative error signal provided by subtracting a reproduced image signal obtained by coding/decoding from an original image signal which has not undergone interframe/interfield coding processing, and means for adding the signal component including the negative error signal to input image signals of other frames or fields.
Claim 2
Dependent Claim
112 words
An efficient coding apparatus as set forth in claim 1, comprising: means for detecting the degree of matching every block or pixel of an image between frames or fields where interframe or interfield processing is carried out, and adding means such that when the degree of matching is high, the adding means is operative to increase the rate of a signal component including a negative error signal to add it to input image signals of other frames or fields, while when the degree of matching is low, the adding means is operative to decrease the rate of a signal component including a negative error signal to add it those input image signals.
Claim 3
Dependent Claim
83 words
An efficient coding apparatus as set forth in claim 1, comprising: means for detecting the degree of matching every block or pixel of an image between frames or fields where interframe or interfield processing is carried out, and quantization means such that when the degree of matching is high, the quantization means is operative to allow a quantization step to be coarse, while when the degree of matching is low, the quantization means is operative to allow the quantization step to be fine.
Claim 4
Dependent Claim
120 words
An efficient coding apparatus as set forth in claim 1, comprising: means for detecting the degree of matching every block or pixel of an image between frames or fields where interframe or interfield processing is carried out, means for controlling a quantization step, and adding means such that when the quantization step is caused to be coarse, the adding means is operative to increase the rate of a signal component including a negative error signal to input image signals of other frames or fields, while when the quantization step is caused to be fine, the adding means is operative to decrease the rate of a signal component including a negative error signal to add it to those input image signals.
Claim 5
Dependent Claim
42 words
An efficient decoding apparatus comprising means for adding reproduced image signals of other frames of fields to a current or present reproduced image signal in decoding coded data of an image in which error signals of other frames or fields are included.
Claim 6
Dependent Claim
114 words
An efficient decoding apparatus as set forth in claim 5, comprising means for detecting the degree of matching every block or pixel of a reproduced image between frames or fields where interframe or interfield processing is carried out, and adding means such that when the degree of the matching is high, the adding means is operative to increase the rate of reproduced image signals of other frames to add them to a current or present reproduced image signal, while when the degree of the matching is low, the adding means is operative to increase the rate of a current reproduced image signal to add it to reproduced image signals of other frames or fields.