JPS5596764A - Half tone reproducing circuit - Google Patents
Half tone reproducing circuitInfo
- Publication number
- JPS5596764A JPS5596764A JP453479A JP453479A JPS5596764A JP S5596764 A JPS5596764 A JP S5596764A JP 453479 A JP453479 A JP 453479A JP 453479 A JP453479 A JP 453479A JP S5596764 A JPS5596764 A JP S5596764A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- voltage
- half tone
- comparator
- level output
- 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
Abstract
PURPOSE: To reproduce a half tone with a simple circuit constitution by utilizing effectively the state of the toggle of a JKFF in the facsimile receiving unit which reproduces the half tone by pulse number modulation.
CONSTITUTION: Picture signal (a) including a half tone transmitted from a transmission unit through input terminal 1 is inputted to the - terminal of comparator 2 and the + terminal of comparator 3. Comparator 2 compares picture signal (a) and reference voltage Vb with each other and outputs high-level output signal (b) for signal (a)<voltage Vb and outputs low-level output signal (b) for signal (a)> voltage Vb. Comparator 3 compares picture signal (a) and reference voltage Vc with each other and outputs low-level output signal (c) for signal (a)<voltage Vc and outputs high-level output signal (e) for signal (a)>voltage Vc. Outputs signals (b) and (c) of comparators 2 and 3 are inputted to JKFF 4.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP453479A JPS5596764A (en) | 1979-01-18 | 1979-01-18 | Half tone reproducing circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP453479A JPS5596764A (en) | 1979-01-18 | 1979-01-18 | Half tone reproducing circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5596764A true JPS5596764A (en) | 1980-07-23 |
Family
ID=11586703
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP453479A Pending JPS5596764A (en) | 1979-01-18 | 1979-01-18 | Half tone reproducing circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5596764A (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4996617A (en) * | 1972-11-03 | 1974-09-12 | ||
JPS5345537U (en) * | 1976-09-22 | 1978-04-18 |
-
1979
- 1979-01-18 JP JP453479A patent/JPS5596764A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4996617A (en) * | 1972-11-03 | 1974-09-12 | ||
JPS5345537U (en) * | 1976-09-22 | 1978-04-18 |
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