JPS5523653A - Reproducing method of intermediate tone - Google Patents
Reproducing method of intermediate toneInfo
- Publication number
- JPS5523653A JPS5523653A JP9639178A JP9639178A JPS5523653A JP S5523653 A JPS5523653 A JP S5523653A JP 9639178 A JP9639178 A JP 9639178A JP 9639178 A JP9639178 A JP 9639178A JP S5523653 A JPS5523653 A JP S5523653A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- address
- concentration
- intermediate tone
- video element
- 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 improve the quality of the intermediate tone reproducing picture with a simple method, by quantizing the picture concentration including intermediate tone, splitting the input video element regions into video element, and giving black to the video element unit sequentially from the center according to increased concentration level.
CONSTITUTION: The quantizing unit 51 quantizes the concentration signal S in five value to output the concentration signal Sq, and the buffer memory 52 stores the signal Sq for one line's share toward main scanning direction. The address controller 53 outputs the address signal with the control of the system controller 54 to read out the signal Sq from the memory 52. On the other hand, the address signal is converted into the address signal of the threshold (SH) matrix MT with the address converter 56 to output SHMT from the threshold level set memory 57. The comparator 55 compares the signal Sq with SHMT to output the signal giving black or white to the video elements 31a to 31d accoridng to the value of the signal Sq to the plotter control 58. The control 58 controls the block according to the video element address from the converter 56 to obtain the intermediate tone reproduction picture corresponding to the concentration signal.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9639178A JPS5523653A (en) | 1978-08-08 | 1978-08-08 | Reproducing method of intermediate tone |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9639178A JPS5523653A (en) | 1978-08-08 | 1978-08-08 | Reproducing method of intermediate tone |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5523653A true JPS5523653A (en) | 1980-02-20 |
Family
ID=14163650
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9639178A Pending JPS5523653A (en) | 1978-08-08 | 1978-08-08 | Reproducing method of intermediate tone |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5523653A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5799866A (en) * | 1980-12-15 | 1982-06-21 | Canon Inc | Picture image binary-coding method |
JPS5844860A (en) * | 1981-09-11 | 1983-03-15 | Nippon Telegr & Teleph Corp <Ntt> | Processing method for intermediate tone |
JPS59191967A (en) * | 1983-04-14 | 1984-10-31 | Mitsubishi Electric Corp | Recording method of half-tone picture |
JPS59229971A (en) * | 1983-06-10 | 1984-12-24 | Mitsubishi Electric Corp | Color thermal transfer recording method |
JPS60248074A (en) * | 1984-05-23 | 1985-12-07 | Sharp Corp | Thermal transfer heat sensing recorder |
US4987484A (en) * | 1983-03-06 | 1991-01-22 | Canon Kabushiki Kaisha | Halftone image signal processing apparatus in which pixels of a dither threshold pattern are each divided into an operator-selected number of micropixels |
-
1978
- 1978-08-08 JP JP9639178A patent/JPS5523653A/en active Pending
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5799866A (en) * | 1980-12-15 | 1982-06-21 | Canon Inc | Picture image binary-coding method |
JPS5844860A (en) * | 1981-09-11 | 1983-03-15 | Nippon Telegr & Teleph Corp <Ntt> | Processing method for intermediate tone |
US4987484A (en) * | 1983-03-06 | 1991-01-22 | Canon Kabushiki Kaisha | Halftone image signal processing apparatus in which pixels of a dither threshold pattern are each divided into an operator-selected number of micropixels |
JPS59191967A (en) * | 1983-04-14 | 1984-10-31 | Mitsubishi Electric Corp | Recording method of half-tone picture |
JPS59229971A (en) * | 1983-06-10 | 1984-12-24 | Mitsubishi Electric Corp | Color thermal transfer recording method |
JPH027221B2 (en) * | 1983-06-10 | 1990-02-16 | Mitsubishi Electric Corp | |
JPS60248074A (en) * | 1984-05-23 | 1985-12-07 | Sharp Corp | Thermal transfer heat sensing recorder |
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