JPS6436178A - Decoder for picture block code signal - Google Patents
Decoder for picture block code signalInfo
- Publication number
- JPS6436178A JPS6436178A JP19002887A JP19002887A JPS6436178A JP S6436178 A JPS6436178 A JP S6436178A JP 19002887 A JP19002887 A JP 19002887A JP 19002887 A JP19002887 A JP 19002887A JP S6436178 A JPS6436178 A JP S6436178A
- Authority
- JP
- Japan
- Prior art keywords
- distortion
- block
- circuit
- elimination
- decoder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Image Processing (AREA)
- Compression Or Coding Systems Of Tv Signals (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
Abstract
PURPOSE:To simplify the elimination circuit for block distortion by applying distortion elimination only to a picture element at a border of blocks where distortion is especially remarkable and displaying other elements as they are. CONSTITUTION:A distortion elimination circuit 5 applies low pass filtering with a characteristic to a picture signal decoded by a decoding circuit 2, a switch 6 is thrown upward position only when the picture elements at the outer circumference of a block are outputted and the distortion elimination circuit is sent to a D/A conversion circuit 3. In other cases, the output of the decoding circuit 2 is sent to the D/A conversion circuit 3 as it is. Thus, only the picture elements on the outer circumference of the block where block distortion is especially remarkable are eliminated for the distortion and the block distortion caused by the block coding is reduced by the addition of a simple circuit.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19002887A JP2793586B2 (en) | 1987-07-31 | 1987-07-31 | Image block code signal decoding apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19002887A JP2793586B2 (en) | 1987-07-31 | 1987-07-31 | Image block code signal decoding apparatus |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6436178A true JPS6436178A (en) | 1989-02-07 |
JP2793586B2 JP2793586B2 (en) | 1998-09-03 |
Family
ID=16251169
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP19002887A Expired - Lifetime JP2793586B2 (en) | 1987-07-31 | 1987-07-31 | Image block code signal decoding apparatus |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2793586B2 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0346482A (en) * | 1989-07-14 | 1991-02-27 | Kokusai Denshin Denwa Co Ltd <Kdd> | Method and apparatus for eliminating block distortion for moving picture coding |
JPH04318784A (en) * | 1991-04-18 | 1992-11-10 | Matsushita Electric Ind Co Ltd | Signal processing method and recording/reproducing device |
JPH0514735A (en) * | 1991-07-01 | 1993-01-22 | Kubota Corp | Picture processor |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63104586A (en) * | 1986-10-21 | 1988-05-10 | Sony Corp | Decoding device for block coded picture signal |
-
1987
- 1987-07-31 JP JP19002887A patent/JP2793586B2/en not_active Expired - Lifetime
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63104586A (en) * | 1986-10-21 | 1988-05-10 | Sony Corp | Decoding device for block coded picture signal |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0346482A (en) * | 1989-07-14 | 1991-02-27 | Kokusai Denshin Denwa Co Ltd <Kdd> | Method and apparatus for eliminating block distortion for moving picture coding |
JPH04318784A (en) * | 1991-04-18 | 1992-11-10 | Matsushita Electric Ind Co Ltd | Signal processing method and recording/reproducing device |
JPH0514735A (en) * | 1991-07-01 | 1993-01-22 | Kubota Corp | Picture processor |
Also Published As
Publication number | Publication date |
---|---|
JP2793586B2 (en) | 1998-09-03 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CA2073921A1 (en) | Picture codec and teleconference terminal equipment | |
EP0592104A3 (en) | Coding and decoding of digital signals. | |
EP0614317A3 (en) | Video signal decoding. | |
EP0576290A3 (en) | Picture signal coding and decoding | |
AU3247393A (en) | Circuitry for decoding huffman codes | |
CA2014943A1 (en) | Entropy encoder/decoder including a context extractor | |
EP0618731A3 (en) | High efficiency encoding of picture signals. | |
EP0616471A3 (en) | Coding of digital signals. | |
EP0593046A3 (en) | Huffman code decoding circuit | |
NO178680C (en) | Color television system with circuits for coding and decoding of color television signals | |
EP0622961A3 (en) | Picture signal coding/decoding methods and devices. | |
EP0620685A3 (en) | Digital video signal encoding. | |
GB8608081D0 (en) | Encoding & decoding digital video signals | |
AU4974185A (en) | Coding video signal in block units | |
EP0229379A3 (en) | Digital picture signal coding/decoding circuit | |
JPS6436178A (en) | Decoder for picture block code signal | |
GB8707497D0 (en) | Vestigial sideband signal decoder | |
CA2016996A1 (en) | Codec system encoding and decoding an image signal at a high speed | |
AU562461B2 (en) | Encoding/decoding colour video signal and digital data | |
AU577186B2 (en) | Encoding or decoding circuit | |
JPS53139426A (en) | Decoding device | |
GB2023368B (en) | Circuit for decoding chrominance signals in the secam television system | |
EP0737959A4 (en) | Coded data decoding device and video/audio multiplexed data decoding device using it | |
JPS5387121A (en) | Method and apparatus for coding of color pattern | |
DE68904656D1 (en) | COLOR TV SIGNAL DECODER. |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
EXPY | Cancellation because of completion of term | ||
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080619 Year of fee payment: 10 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080619 Year of fee payment: 10 |