JPS6478589A - Picture decoder - Google Patents
Picture decoderInfo
- Publication number
- JPS6478589A JPS6478589A JP62236526A JP23652687A JPS6478589A JP S6478589 A JPS6478589 A JP S6478589A JP 62236526 A JP62236526 A JP 62236526A JP 23652687 A JP23652687 A JP 23652687A JP S6478589 A JPS6478589 A JP S6478589A
- Authority
- JP
- Japan
- Prior art keywords
- data
- register
- output
- code
- loaded
- 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
Landscapes
- Compression Or Coding Systems Of Tv Signals (AREA)
Abstract
PURPOSE:To improve the efficiency in decoding a picture signal by comparing the change part of a picture signal with the evaluation function of a monotone decrease and using the code of a distance and a change direction between samples in the sample having a large changes as input data. CONSTITUTION:The data inputted from a data input terminal 1 is stored in a buffer memory 3, the data Di indicating a horizontal distance between the sample values in this data is loaded in a register 4 and further loaded to a down counter. The output of the register 4 is applied as the address of a ROM 5. The code Si of a displacement direction in the data is fed to an adder/ subtracter 8, when the code Si is positive the output of the register and the output of the ROM 5 are added and when it is negative, they are subtracted. The down counter 6 is counted down from the value Di loaded by a clock Fs added to a terminal 4, outputs a borrow signal at the time of 0, to update the value of a register 7 and maintain the output of the adder/subtracter 8 at that time.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62236526A JPS6478589A (en) | 1987-09-21 | 1987-09-21 | Picture decoder |
EP88306679A EP0300775B1 (en) | 1987-07-21 | 1988-07-20 | Signal encoding and decoding method and device |
DE3853899T DE3853899T2 (en) | 1987-07-21 | 1988-07-20 | Method and device for coding and decoding a signal. |
US07/222,171 US4953214A (en) | 1987-07-21 | 1988-07-21 | Signal encoding and decoding method and device |
KR1019880009095A KR920003860B1 (en) | 1987-07-21 | 1988-07-21 | Coding decoding circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62236526A JPS6478589A (en) | 1987-09-21 | 1987-09-21 | Picture decoder |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6478589A true JPS6478589A (en) | 1989-03-24 |
Family
ID=17001995
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62236526A Pending JPS6478589A (en) | 1987-07-21 | 1987-09-21 | Picture decoder |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6478589A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0659016A2 (en) * | 1993-12-17 | 1995-06-21 | Nippon Telegraph And Telephone Corporation | Method and apparatus for video cut detection |
-
1987
- 1987-09-21 JP JP62236526A patent/JPS6478589A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0659016A2 (en) * | 1993-12-17 | 1995-06-21 | Nippon Telegraph And Telephone Corporation | Method and apparatus for video cut detection |
US5642294A (en) * | 1993-12-17 | 1997-06-24 | Nippon Telegraph And Telephone Corporation | Method and apparatus for video cut detection |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS6439185A (en) | Enhancing circuit | |
JPS6478589A (en) | Picture decoder | |
GB1460370A (en) | Digital f'lter | |
JPS54122043A (en) | Electronic computer | |
JPS5761387A (en) | Encoder between frames | |
JPS56143018A (en) | Noise rejecting circuit | |
CA2072265A1 (en) | Overflow detection system and its circuit for use in addition and subtraction | |
JPS56154819A (en) | Waveform shaping circuit for digital signal | |
JPS6478588A (en) | Picture encoder | |
JPS5750060A (en) | Memory controlling circuit | |
JPS5785162A (en) | Picture memory access control system | |
JPS5634264A (en) | Code detecting circuit | |
JPS56108146A (en) | Clocking device | |
JPS5719869A (en) | Input information processor | |
JPS57125439A (en) | Buffering system | |
JPS57106240A (en) | Up/down counter circuit | |
JPS57174722A (en) | Data processor | |
JPS55139618A (en) | Coding method | |
JPS54107641A (en) | Data processor | |
JPS57140054A (en) | Ami coding circuit | |
JPS57181223A (en) | Frequency discriminator | |
JPS5779552A (en) | Data processor | |
JPS57169856A (en) | Instruction execution system | |
JPS5734226A (en) | Trigonometrical function conversion circuit for oscillation calculating panel | |
JPS6453396A (en) | Output buffer circuit |