EP0557684A2
Expired / Lapsed
EP
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A moving picture receiving method and apparatus
Assignee: Mitsubishi Electric Corp
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Filing: 1993-01-05
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Granted: —
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Expires: 2013-01-05
Abstract
Abstract A moving picture receiving method for receiving a moving picture by block unit includes steps of detecting a lost block which can not be reproduced in the receiving image signal, calculating an average value of blocks adjacent to the lost block which can not be reproduced, adaptively substituting the lost block by an average value of the block adjacent to the lost block or a block at the same location corresponding to the preceding frame in case that the block is lost in the receiving signal.
Inventors
- 👤 Taku c/o Mitsubishi Denki K.K. Saito
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 07:48
CPC Classifications
H; H04; H04N; H04N19/00; H04N19/85; H04N19/89; H04N19/895; H04N19/60; H04N19/65
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
88 words
A moving picture receiving method for receiving a moving picture by block unit, characterized by the steps of: detecting a lost block which can not be reproduced in the receiving image signal; calculating an average value of blocks adjacent to the lost block which can not be reproduced; adaptively substituting the lost block by an average value of the block adjacent to the lost block or a block at the same location corresponding to the preceding frame in case that the block is lost in the receiving signal.
Claim 2
Dependent Claim
38 words
A moving picture receiving method according to claim 1: wherein a block corresponding to a preceding field is selected instead of said block at the same location corresponding to the preceding frame, in case of an interlace signal.
Claim 3
Dependent Claim
53 words
A moving picture receiving method according to claim 1: wherein a direct current signal level is directly selected instead of calculating an average value from the adjacent blocks, in case that there are many signals most of which have substantially the same level as a direct current component level of the adjacent blocks.
Claim 4
Dependent Claim
164 words
A moving picture receiving apparatus for receiving a moving picture by block unit, characterized by: a lost block detection means which detects a lost block in the receiving signal; a block average value calculation portion which calculates a block average value; a substitution control means for detecting a change of an average value of the block adjacent to the lost block by obtaining subtraction between an average value of a block adjacent to the lost block and an average value of the adjacent block at the same location corresponding to the preceding frame, and outputs a control signal; a frame memory means for providing an image block corresponding to the preceding frame; an adjacent block average value calculation means for calculating an adjacent block average value; a selector means selects either an output average value of the frame memory means or an output block of the adjacent block average value calculation portion in response to the output control signal of the substitution control means.
Claim 5
Dependent Claim
44 words
A moving picture receiving apparatus for receiving a moving picture according to claim 1, further comprising: a decoding means for decoding a receiving signal; a block disassembling means for disassembling an output signal of the selector means and for outputting a moving picture signal.
Claim 6
Dependent Claim
41 words
A moving picture receiving apparatus for receiving a moving picture according to claim 1: wherein the selector means selects a block corresponding to a preceding field instead of a block corresponding to the preceding frame, in case of an interlace signal.
Claim 7
Dependent Claim
60 words
A moving picture receiving apparatus for receiving a moving picture according to claim 1: wherein the selector means selects directly a direct current signal level in case that there are many signals most of which have substantially the same level as a direct current component level of the adjacent blocks, instead of calculating an average value from the adjacent blocks.
References Cited (Backward Citations)
No citation records indexed.
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