JPS63253775A - Video signal synthesizer - Google Patents

Video signal synthesizer

Info

Publication number
JPS63253775A
JPS63253775A JP8803987A JP8803987A JPS63253775A JP S63253775 A JPS63253775 A JP S63253775A JP 8803987 A JP8803987 A JP 8803987A JP 8803987 A JP8803987 A JP 8803987A JP S63253775 A JPS63253775 A JP S63253775A
Authority
JP
Japan
Prior art keywords
control signal
detection
video signal
outputted
control
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
JP8803987A
Other languages
Japanese (ja)
Inventor
Shunichi Kajitani
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.)
NEC Corp
Original Assignee
NEC 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 NEC Corp filed Critical NEC Corp
Priority to JP8803987A priority Critical patent/JPS63253775A/en
Publication of JPS63253775A publication Critical patent/JPS63253775A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To enable an operator to accurately detect an ON-information representing a specified input video signal being displayed on the screen by providing a detection circuit to detect a control signal outputted from a control signal generating circuit to a multiplier.
CONSTITUTION: The detection circuits 61, 62,∼,6m are respectively connected to the control lines 31, 32,∼,3m of a video signal synthesizer. When the control signal generation circuit 3 outputs control signals to the control lines 31, 32,∼,3m, to which one of the lines 31, 32,∼,3m the control signal is outputted is detected by the detection circuits 61, 62,∼,6m, and detected outputs respectively are outputted to detection output terminals 71, 72,∼,7m. Accordingly, these detection outputs are used as the ON-information, and when used in the display device for an operator provided each equipment, the errorless ON-information can be informed to operators.
COPYRIGHT: (C)1988,JPO&Japio
JP8803987A 1987-04-10 1987-04-10 Video signal synthesizer Pending JPS63253775A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8803987A JPS63253775A (en) 1987-04-10 1987-04-10 Video signal synthesizer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8803987A JPS63253775A (en) 1987-04-10 1987-04-10 Video signal synthesizer

Publications (1)

Publication Number Publication Date
JPS63253775A true JPS63253775A (en) 1988-10-20

Family

ID=13931681

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8803987A Pending JPS63253775A (en) 1987-04-10 1987-04-10 Video signal synthesizer

Country Status (1)

Country Link
JP (1) JPS63253775A (en)

Similar Documents

Publication Publication Date Title
JPS63253775A (en) Video signal synthesizer
JPS5523551A (en) Control unit diagnostic equipment
JPS61262856A (en) Testing circuit
JPH03141796A (en) Plural-face display system for display board
JPH0327473A (en) Circuit diagram input device
JPH03214871A (en) Crt display device
JPS5824963A (en) Error display method in electronic apparatus
JPS57174979A (en) Picture synthesizer
JPH0275973A (en) Test device for multiconductor cable
JPS62133872A (en) Video signal switching circuit of display monitoring equipment
JPH02214921A (en) Fault detector for analog multiplexer
JPH02189420A (en) Digital panel meter
JPH04357473A (en) Electronic load device
JPH04236500A (en) Inspecting device for mounted polarity direction of polarized electronic component
JPS63236481A (en) Television receiver
JPH04280400A (en) Signal input device
JPH01274079A (en) Apparatus for checking control circuit
JPH01178233A (en) Image display apparatus of endoscope
JPH0236672A (en) Synchronizing signal generating circuit
JPH03269225A (en) Infrared-ray image apparatus
JPH0418674A (en) Circuit diagram input system
JPH01265294A (en) Data indicator
JPH02193488A (en) Video communication equipment
JPH01296312A (en) Device and method for debugging
JPH03226669A (en) Ultrasonic test device