JPS5597780A - Signal processing system - Google Patents
Signal processing systemInfo
- Publication number
- JPS5597780A JPS5597780A JP885479A JP885479A JPS5597780A JP S5597780 A JPS5597780 A JP S5597780A JP 885479 A JP885479 A JP 885479A JP 885479 A JP885479 A JP 885479A JP S5597780 A JPS5597780 A JP S5597780A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- analog signal
- converted
- picture element
- coder
- 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
Abstract
PURPOSE: To compress the band of an analog signal by obtaining a signal with its entropy reduced by attaining the digital band compression processing of an analog signal and then by converting the obtained signal into an analog signal.
CONSTITUTION: A time-series video signal inputted to input terminal 1 is supplied to differential amplifier 12 to calculate a difference from a signal one picture element before, which is converted into a difference signal of its digital value. Non-linear quantizing unit 13 consists of level comparators 11a∼11d, and coder 16 assigning previously-fixed codes corresponding to their outputs. Comparators 11a∼11d perform quantization finely when the absolute value of the quantization level is small or coarsely when large. Coder 16 assigns a short code to a signal high in generation probability. Although the coded signal is outputted from terminal 19, part of it is decoded 14 and added 15 to signal 17 preceding by one picture element. To process a next picture element, it is converted 18 into an analog signal, which is inputted to amplifier 12. The signal processed in this way is converted into an analog signal, which is further compressed and modulated into a signal adequate for recording before being outputted.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP885479A JPS5597780A (en) | 1979-01-29 | 1979-01-29 | Signal processing system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP885479A JPS5597780A (en) | 1979-01-29 | 1979-01-29 | Signal processing system |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14553878A Division JPS5571354A (en) | 1978-11-25 | 1978-11-25 | Signal processing method |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5597780A true JPS5597780A (en) | 1980-07-25 |
JPH0152953B2 JPH0152953B2 (en) | 1989-11-10 |
Family
ID=11704313
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP885479A Granted JPS5597780A (en) | 1979-01-29 | 1979-01-29 | Signal processing system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5597780A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5797224A (en) * | 1980-12-09 | 1982-06-16 | Nec Corp | Forecasting coder |
JPS57104321A (en) * | 1980-12-22 | 1982-06-29 | Nec Corp | Forecasting encoder |
JPS61252792A (en) * | 1985-05-02 | 1986-11-10 | Hitachi Ltd | Method for processing encoding of color picture image information |
JPS6394780A (en) * | 1986-10-09 | 1988-04-25 | Nippon Board Computer Kk | Compressing method for information quantity of picture |
JPS63190473A (en) * | 1986-09-25 | 1988-08-08 | Nippon Board Computer Kk | Method and apparatus for compressing quantity of information on multi-gradation picture data |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5219730A (en) * | 1975-08-08 | 1977-02-15 | Fujikawa Kenzai Kogyo Kk | Facing materials for textiles to present uneven surfaces of a porous s tructure |
-
1979
- 1979-01-29 JP JP885479A patent/JPS5597780A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5219730A (en) * | 1975-08-08 | 1977-02-15 | Fujikawa Kenzai Kogyo Kk | Facing materials for textiles to present uneven surfaces of a porous s tructure |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5797224A (en) * | 1980-12-09 | 1982-06-16 | Nec Corp | Forecasting coder |
JPS628054B2 (en) * | 1980-12-09 | 1987-02-20 | Nippon Electric Co | |
JPS57104321A (en) * | 1980-12-22 | 1982-06-29 | Nec Corp | Forecasting encoder |
JPS628055B2 (en) * | 1980-12-22 | 1987-02-20 | Nippon Electric Co | |
JPS61252792A (en) * | 1985-05-02 | 1986-11-10 | Hitachi Ltd | Method for processing encoding of color picture image information |
JPS63190473A (en) * | 1986-09-25 | 1988-08-08 | Nippon Board Computer Kk | Method and apparatus for compressing quantity of information on multi-gradation picture data |
JPS6394780A (en) * | 1986-10-09 | 1988-04-25 | Nippon Board Computer Kk | Compressing method for information quantity of picture |
Also Published As
Publication number | Publication date |
---|---|
JPH0152953B2 (en) | 1989-11-10 |
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