JPS55105775A - Binary coding system - Google Patents
Binary coding systemInfo
- Publication number
- JPS55105775A JPS55105775A JP1225979A JP1225979A JPS55105775A JP S55105775 A JPS55105775 A JP S55105775A JP 1225979 A JP1225979 A JP 1225979A JP 1225979 A JP1225979 A JP 1225979A JP S55105775 A JPS55105775 A JP S55105775A
- Authority
- JP
- Japan
- Prior art keywords
- video signal
- multiplexer
- signal
- binary
- slice level
- 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
- Character Input (AREA)
- Manipulation Of Pulses (AREA)
Abstract
PURPOSE: To correctly binarize the thin line adjacent to thick line, by changing the binary reference method of video signal with the binary output comparing the signal greater by a given amount than white level being the reference of video signal with the video signal.
CONSTITUTION: The peak value of video signal and the slice level dropped with a given time constant are one input T2 of the multiplexer 54 via the voltage followers 51, 52. Another input T1 of the multiplexer 54 is the slice level VT1 being the fixed value greater by a given amount than the white level being the reference of video signal. Further, video signal enters the comparator 53 via the voltage follower 51 and outputs the control signal S of the multiplexer 54 with another input VT13. The output of the multiplexer is the slice level T1 or T2 with this control signal S, which is compared with the video signal at the comparator 55 to be binary coding signal.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1225979A JPS55105775A (en) | 1979-02-07 | 1979-02-07 | Binary coding system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1225979A JPS55105775A (en) | 1979-02-07 | 1979-02-07 | Binary coding system |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS55105775A true JPS55105775A (en) | 1980-08-13 |
JPS629956B2 JPS629956B2 (en) | 1987-03-03 |
Family
ID=11800363
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1225979A Granted JPS55105775A (en) | 1979-02-07 | 1979-02-07 | Binary coding system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55105775A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59221026A (en) * | 1983-05-30 | 1984-12-12 | Matsushita Electric Works Ltd | Receiving circuit of digital signal |
JPS61293053A (en) * | 1985-06-20 | 1986-12-23 | Sumitomo Electric Ind Ltd | Reception circuit |
JPS6297079A (en) * | 1985-10-24 | 1987-05-06 | Hitachi Ltd | Binary coding circuit for video signal |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS511542A (en) * | 1974-05-24 | 1976-01-08 | Ooto Meeku Atsupu Ab | |
JPS52151513A (en) * | 1976-06-11 | 1977-12-16 | Hitachi Ltd | Binary signal generation device |
JPS5372419A (en) * | 1976-12-09 | 1978-06-27 | Matsushita Graphic Communic | Binary discriminator |
-
1979
- 1979-02-07 JP JP1225979A patent/JPS55105775A/en active Granted
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS511542A (en) * | 1974-05-24 | 1976-01-08 | Ooto Meeku Atsupu Ab | |
JPS52151513A (en) * | 1976-06-11 | 1977-12-16 | Hitachi Ltd | Binary signal generation device |
JPS5372419A (en) * | 1976-12-09 | 1978-06-27 | Matsushita Graphic Communic | Binary discriminator |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59221026A (en) * | 1983-05-30 | 1984-12-12 | Matsushita Electric Works Ltd | Receiving circuit of digital signal |
JPS61293053A (en) * | 1985-06-20 | 1986-12-23 | Sumitomo Electric Ind Ltd | Reception circuit |
JPS6297079A (en) * | 1985-10-24 | 1987-05-06 | Hitachi Ltd | Binary coding circuit for video signal |
Also Published As
Publication number | Publication date |
---|---|
JPS629956B2 (en) | 1987-03-03 |
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