JPS5571354A - Signal processing method - Google Patents
Signal processing methodInfo
- Publication number
- JPS5571354A JPS5571354A JP14553878A JP14553878A JPS5571354A JP S5571354 A JPS5571354 A JP S5571354A JP 14553878 A JP14553878 A JP 14553878A JP 14553878 A JP14553878 A JP 14553878A JP S5571354 A JPS5571354 A JP S5571354A
- Authority
- JP
- Japan
- Prior art keywords
- signals
- digital
- register
- analogue
- inputted
- 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
- Color Television Systems (AREA)
Abstract
PURPOSE: To compress the band of analogue signals by subjecting analogue signals having multi-level amplitude information to a digital band compression processing and converting them to analogue signals after making them of small-redundancy digital signals.
CONSTITUTION: Time series video signals inputted to an input terminal are applied to differential amplifier 12 incorporated in digital band compression processing circuit 2, and difference between these video signals and signals preceding them by one picture element is taken and is converted to digital difference signal, and this signal is compressed and coded by level comparators 11a∼11d and coder 16 and is outputted to terminal 19. Meanwhile, a part of the output is inputted to decoder 14 and is decoded and is added to adder 15 and is added to the output of register 17 and is stored in register 17 for the next picture element processing. D/A converter 18 converts signals of register 17 to analogue signals. These signals are modulated to signals suitable for recording by modulator 4 and are outputted from output terminal 5. Reproducing signals inputted to input terminal 6 are demodulated by demodulator 7 and are converted to A/D signals and are decoded to original signals by decoder 9.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14553878A JPS5571354A (en) | 1978-11-25 | 1978-11-25 | Signal processing method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14553878A JPS5571354A (en) | 1978-11-25 | 1978-11-25 | Signal processing method |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP885479A Division JPS5597780A (en) | 1979-01-29 | 1979-01-29 | Signal processing system |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5571354A true JPS5571354A (en) | 1980-05-29 |
JPS6249784B2 JPS6249784B2 (en) | 1987-10-21 |
Family
ID=15387502
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14553878A Granted JPS5571354A (en) | 1978-11-25 | 1978-11-25 | Signal processing method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5571354A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6337963B1 (en) | 1998-10-27 | 2002-01-08 | Nec Corporation | Toner recovery system with electrical potential separation for a wet image-forming apparatus |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4890122A (en) * | 1972-02-25 | 1973-11-24 | ||
JPS4929718A (en) * | 1972-07-19 | 1974-03-16 | ||
JPS5187915A (en) * | 1975-01-31 | 1976-07-31 | Hitachi Ltd | DEIJITARU KARAAENKOODA |
JPS5255314A (en) * | 1975-10-30 | 1977-05-06 | Mitsubishi Electric Corp | Band compressoring unit |
JPS5434614A (en) * | 1977-08-24 | 1979-03-14 | Hitachi Ltd | Picture dignal transmission system |
-
1978
- 1978-11-25 JP JP14553878A patent/JPS5571354A/en active Granted
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4890122A (en) * | 1972-02-25 | 1973-11-24 | ||
JPS4929718A (en) * | 1972-07-19 | 1974-03-16 | ||
JPS5187915A (en) * | 1975-01-31 | 1976-07-31 | Hitachi Ltd | DEIJITARU KARAAENKOODA |
JPS5255314A (en) * | 1975-10-30 | 1977-05-06 | Mitsubishi Electric Corp | Band compressoring unit |
JPS5434614A (en) * | 1977-08-24 | 1979-03-14 | Hitachi Ltd | Picture dignal transmission system |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6337963B1 (en) | 1998-10-27 | 2002-01-08 | Nec Corporation | Toner recovery system with electrical potential separation for a wet image-forming apparatus |
Also Published As
Publication number | Publication date |
---|---|
JPS6249784B2 (en) | 1987-10-21 |
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