JPS5599879A - Virtuous reproduction method for intermediate tone - Google Patents
Virtuous reproduction method for intermediate toneInfo
- Publication number
- JPS5599879A JPS5599879A JP599579A JP599579A JPS5599879A JP S5599879 A JPS5599879 A JP S5599879A JP 599579 A JP599579 A JP 599579A JP 599579 A JP599579 A JP 599579A JP S5599879 A JPS5599879 A JP S5599879A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- video signal
- output
- integration
- density
- 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
- Facsimile Image Signal Circuits (AREA)
Abstract
PURPOSE: To virtually reproduce the intermediate tone even in the unit reporudcing only two value of white and black, by controlling the location density of recording dots in response to the concentration distribution of original picture.
CONSTITUTION: The system consists of the integration circuit 1 with reset terminal, comparison circuit 2, FF3, and input terminal 5 of reference voltage. The video signal inputted to the input terminal 4 is integrated for time with the circuit 1 and fed to the circuit 2. The circuit 2 inverts the output from low to high level when the input integration voltage reaches the reference value e. As soon as the output of the circuit 2 inverts to high level, the information is transferred to FF3 and it is held for the time corresponding to the 1 clock period. The circuit 1 is reset at the same time and the integration of the video signal is started again. With this constitution, if the output of FF3 is recorded as the video signal, the higher the manuscript density is, the higher is the arrangement density of the recording dots, to express the tone.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP599579A JPS5599879A (en) | 1979-01-24 | 1979-01-24 | Virtuous reproduction method for intermediate tone |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP599579A JPS5599879A (en) | 1979-01-24 | 1979-01-24 | Virtuous reproduction method for intermediate tone |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5599879A true JPS5599879A (en) | 1980-07-30 |
Family
ID=11626360
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP599579A Pending JPS5599879A (en) | 1979-01-24 | 1979-01-24 | Virtuous reproduction method for intermediate tone |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5599879A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62232270A (en) * | 1986-04-02 | 1987-10-12 | Matsushita Graphic Commun Syst Inc | Half tone picture processor |
JPS63310271A (en) * | 1987-06-11 | 1988-12-19 | Canon Inc | Image processor |
-
1979
- 1979-01-24 JP JP599579A patent/JPS5599879A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62232270A (en) * | 1986-04-02 | 1987-10-12 | Matsushita Graphic Commun Syst Inc | Half tone picture processor |
JPS63310271A (en) * | 1987-06-11 | 1988-12-19 | Canon Inc | Image processor |
JPH0691607B2 (en) * | 1987-06-11 | 1994-11-14 | キヤノン株式会社 | Image processing method |
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