JPS5514770A - Pseudo color display circuit - Google Patents

Pseudo color display circuit

Info

Publication number
JPS5514770A
JPS5514770A JP8786778A JP8786778A JPS5514770A JP S5514770 A JPS5514770 A JP S5514770A JP 8786778 A JP8786778 A JP 8786778A JP 8786778 A JP8786778 A JP 8786778A JP S5514770 A JPS5514770 A JP S5514770A
Authority
JP
Japan
Prior art keywords
signal
black
white
color display
optional
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
JP8786778A
Other languages
Japanese (ja)
Inventor
Shiyuuji Itou
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP8786778A priority Critical patent/JPS5514770A/en
Publication of JPS5514770A publication Critical patent/JPS5514770A/en
Pending legal-status Critical Current

Links

Landscapes

  • Color Television Systems (AREA)

Abstract

PURPOSE: To ensure expression of the minute detail variation with reduced change of the gradation levels in case the black/white TV signal undergoes the pseudo color display by giving the color display of an optional width at an optional level of the black/white TV signal.
CONSTITUTION: In case the pseudo color display is given to the black/white TV signal, the reference current flowing to resistances 9∼11, variable resistances 18 and 19 plus resistance 17 is made constant via constant current diode 16 connected to power terminal 2. And then voltage VM and VL applied to wind comparators 12∼ 14 are made constant. Variation of voltage VM and VL is secured by resistance 18 and 19, and thus optional level VL is decided by resistance 19. At the same time, optional level width VM-VL is decided by resistance 18. The black/white TV signal is applied to each of comparators 12∼14 from input terminal 1, the output of 12∼14 are applied to color encoder 15, and the color TV signal of an optional width is delivered at an optional level of the black/white TV signal to output terminals 4∼ 5 of encoder 15.
COPYRIGHT: (C)1980,JPO&Japio
JP8786778A 1978-07-18 1978-07-18 Pseudo color display circuit Pending JPS5514770A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8786778A JPS5514770A (en) 1978-07-18 1978-07-18 Pseudo color display circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8786778A JPS5514770A (en) 1978-07-18 1978-07-18 Pseudo color display circuit

Publications (1)

Publication Number Publication Date
JPS5514770A true JPS5514770A (en) 1980-02-01

Family

ID=13926817

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8786778A Pending JPS5514770A (en) 1978-07-18 1978-07-18 Pseudo color display circuit

Country Status (1)

Country Link
JP (1) JPS5514770A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59128888A (en) * 1983-01-14 1984-07-25 Nippon Furnace Kogyo Kaisha Ltd Method and circuit for making pseudo color
JPS59128887A (en) * 1983-01-14 1984-07-25 Nippon Furnace Kogyo Kaisha Ltd Method and circuit for making pseudo color
JPS59128886A (en) * 1983-01-14 1984-07-25 Nippon Furnace Kogyo Kaisha Ltd Method and circuit for making pseudo color
JPH07306666A (en) * 1994-05-13 1995-11-21 Sony Corp Monitor

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59128888A (en) * 1983-01-14 1984-07-25 Nippon Furnace Kogyo Kaisha Ltd Method and circuit for making pseudo color
JPS59128887A (en) * 1983-01-14 1984-07-25 Nippon Furnace Kogyo Kaisha Ltd Method and circuit for making pseudo color
JPS59128886A (en) * 1983-01-14 1984-07-25 Nippon Furnace Kogyo Kaisha Ltd Method and circuit for making pseudo color
JPH07306666A (en) * 1994-05-13 1995-11-21 Sony Corp Monitor

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