JPS5596764A - Half tone reproducing circuit - Google Patents

Half tone reproducing circuit

Info

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
Application number
JP453479A
Other languages
Japanese (ja)
Inventor
Hideaki Ohira
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic System Solutions Japan Co Ltd
Original Assignee
Matsushita Graphic Communication Systems Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Matsushita Graphic Communication Systems Inc filed Critical Matsushita Graphic Communication Systems Inc
Priority to JP453479A priority Critical patent/JPS5596764A/en
Publication of JPS5596764A publication Critical patent/JPS5596764A/en
Pending legal-status Critical Current

Links

Landscapes

  • Facsimile Image Signal Circuits (AREA)

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
JP453479A 1979-01-18 1979-01-18 Half tone reproducing circuit Pending JPS5596764A (en)

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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4996617A (en) * 1972-11-03 1974-09-12
JPS5345537U (en) * 1976-09-22 1978-04-18

Patent Citations (2)

* Cited by examiner, † Cited by third party
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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