JPS6472668A - Signal generator - Google Patents

Signal generator

Info

Publication number
JPS6472668A
JPS6472668A JP62227571A JP22757187A JPS6472668A JP S6472668 A JPS6472668 A JP S6472668A JP 62227571 A JP62227571 A JP 62227571A JP 22757187 A JP22757187 A JP 22757187A JP S6472668 A JPS6472668 A JP S6472668A
Authority
JP
Japan
Prior art keywords
analogue
value information
line drawing
signal
high speed
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
JP62227571A
Other languages
Japanese (ja)
Inventor
Koji Shoji
Hidefumi Fujiwara
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.)
Anritsu Corp
Original Assignee
Anritsu 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 Anritsu Corp filed Critical Anritsu Corp
Priority to JP62227571A priority Critical patent/JPS6472668A/en
Publication of JPS6472668A publication Critical patent/JPS6472668A/en
Pending legal-status Critical Current

Links

Landscapes

  • Controls And Circuits For Display Device (AREA)
  • Studio Circuits (AREA)
  • Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)

Abstract

PURPOSE:To display a clear line drawing even if a video signal having acute rise and fall is generated and very high speed drawing is executed by making surface drawing value information and line drawing value information into analogue and generating a synthesized signal in a switching circuit which executes a high speed switching action. CONSTITUTION:A first digital-analogue converter 13 which makes surface drawing value information into analogue, a second digitalanalogue converter 14 which makes line drawing value information into analogue, and the switching circuit 15 switching a surface drawing signal and a line drawing signal both of which have respectively been made into analogue in the first and second digital-analogue converters 13 and 14 at high speed based on line drawing timing information overlapping a screen drawing with a line drawing. Next, the video signal having acute rise and fall is generated. Thus, screen drawing value information and line drawing value information are respectively made into analogue, and the synthesized signal where the surface drawing is overlapped with the line drawing by the switching action of the switching circuit which operates at high speed, whereby a signal which can examine the display of high definition and the like can be generated.
JP62227571A 1987-09-12 1987-09-12 Signal generator Pending JPS6472668A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62227571A JPS6472668A (en) 1987-09-12 1987-09-12 Signal generator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62227571A JPS6472668A (en) 1987-09-12 1987-09-12 Signal generator

Publications (1)

Publication Number Publication Date
JPS6472668A true JPS6472668A (en) 1989-03-17

Family

ID=16863000

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62227571A Pending JPS6472668A (en) 1987-09-12 1987-09-12 Signal generator

Country Status (1)

Country Link
JP (1) JPS6472668A (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5972872A (en) * 1982-10-20 1984-04-24 Toshiba Corp Signal switching device
JPS61283283A (en) * 1985-06-10 1986-12-13 Matsushita Electric Ind Co Ltd on-screen display device
JPS63114472A (en) * 1986-10-31 1988-05-19 Victor Co Of Japan Ltd Picture processor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5972872A (en) * 1982-10-20 1984-04-24 Toshiba Corp Signal switching device
JPS61283283A (en) * 1985-06-10 1986-12-13 Matsushita Electric Ind Co Ltd on-screen display device
JPS63114472A (en) * 1986-10-31 1988-05-19 Victor Co Of Japan Ltd Picture processor

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