JPS55115780A - Estimate coding system for television signal - Google Patents
Estimate coding system for television signalInfo
- Publication number
- JPS55115780A JPS55115780A JP2295679A JP2295679A JPS55115780A JP S55115780 A JPS55115780 A JP S55115780A JP 2295679 A JP2295679 A JP 2295679A JP 2295679 A JP2295679 A JP 2295679A JP S55115780 A JPS55115780 A JP S55115780A
- Authority
- JP
- Japan
- Prior art keywords
- value
- circuit
- quantized
- reproduced
- noise
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/50—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
Abstract
PURPOSE:To improve the estimate coding efficiency, by suppressing the quantized error of reproduced picture through assembling the noise rejection filter in the estimate coding loop. CONSTITUTION:The difference between the input signal X1 and the estimate value -X1'' is taken with the differential circuit 11 of the coding unit 1', the estimated error O1 is quantized at the difference quantizing circuit 12, the difference quantized value Z1' and the estimated value -X1'' are added at the addition circuit 13 to form the value of video element decoding value X1'. This decoding value X1' is fed to the noise rejection filter circuit 32 reducing the noise together with the video element reproduced value up to now stored in the memory circuit 14, to form the reproduced value X1'' reducing noise. Further, the noise rejection filter circuit 32 is provided at the output side of the addition circuit 23 of the decoding unit 2' to output the reproduced value reducing noise. Further, the quantized error is reduced than the quantized value DELTAO1' in first rough quantization to obtain the reproduced value reducing noise and the estimate coding efficiency is increased.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2295679A JPS55115780A (en) | 1979-02-28 | 1979-02-28 | Estimate coding system for television signal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2295679A JPS55115780A (en) | 1979-02-28 | 1979-02-28 | Estimate coding system for television signal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS55115780A true JPS55115780A (en) | 1980-09-05 |
Family
ID=12097052
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2295679A Pending JPS55115780A (en) | 1979-02-28 | 1979-02-28 | Estimate coding system for television signal |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55115780A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4805017A (en) * | 1986-03-04 | 1989-02-14 | Kokusai Denshin Denwa Co., Ltd. | System for coding and transmitting motion image signals |
| US4837618A (en) * | 1986-11-10 | 1989-06-06 | Kokusai Denshin Denwa Co., Ltd. | Moving image signal coding system |
-
1979
- 1979-02-28 JP JP2295679A patent/JPS55115780A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4805017A (en) * | 1986-03-04 | 1989-02-14 | Kokusai Denshin Denwa Co., Ltd. | System for coding and transmitting motion image signals |
| US4837618A (en) * | 1986-11-10 | 1989-06-06 | Kokusai Denshin Denwa Co., Ltd. | Moving image signal coding system |
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