JPS546427A - Crt display unit - Google Patents

Crt display unit

Info

Publication number
JPS546427A
JPS546427A JP7053777A JP7053777A JPS546427A JP S546427 A JPS546427 A JP S546427A JP 7053777 A JP7053777 A JP 7053777A JP 7053777 A JP7053777 A JP 7053777A JP S546427 A JPS546427 A JP S546427A
Authority
JP
Japan
Prior art keywords
display unit
crt display
pen
counter
malfunction
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
JP7053777A
Other languages
Japanese (ja)
Inventor
Shoichi Ito
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP7053777A priority Critical patent/JPS546427A/en
Publication of JPS546427A publication Critical patent/JPS546427A/en
Pending legal-status Critical Current

Links

Landscapes

  • Position Input By Displaying (AREA)

Abstract

PURPOSE: To eliminate the trouble on operation in case of operating a light pen on a part except the display screen by mistake, by providing a counter which counts up simultaneously to the operation of the pen and by detecting the malfunction of the pen judging from the excessive time of the counter.
COPYRIGHT: (C)1979,JPO&Japio
JP7053777A 1977-06-16 1977-06-16 Crt display unit Pending JPS546427A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7053777A JPS546427A (en) 1977-06-16 1977-06-16 Crt display unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7053777A JPS546427A (en) 1977-06-16 1977-06-16 Crt display unit

Publications (1)

Publication Number Publication Date
JPS546427A true JPS546427A (en) 1979-01-18

Family

ID=13434375

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7053777A Pending JPS546427A (en) 1977-06-16 1977-06-16 Crt display unit

Country Status (1)

Country Link
JP (1) JPS546427A (en)

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