JPS5674739A - Light pen indicating position deciding method in crt display - Google Patents

Light pen indicating position deciding method in crt display

Info

Publication number
JPS5674739A
JPS5674739A JP15168179A JP15168179A JPS5674739A JP S5674739 A JPS5674739 A JP S5674739A JP 15168179 A JP15168179 A JP 15168179A JP 15168179 A JP15168179 A JP 15168179A JP S5674739 A JPS5674739 A JP S5674739A
Authority
JP
Japan
Prior art keywords
light pen
field
pulse outputs
crt display
indicating position
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.)
Granted
Application number
JP15168179A
Other languages
Japanese (ja)
Other versions
JPS5926052B2 (en
Inventor
Hideji Yanase
Yoshitaka Omori
Osamu Suzuki
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.)
Sanyo Electric Co Ltd
Original Assignee
Sanyo 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 Sanyo Electric Co Ltd filed Critical Sanyo Electric Co Ltd
Priority to JP54151681A priority Critical patent/JPS5926052B2/en
Publication of JPS5674739A publication Critical patent/JPS5674739A/en
Publication of JPS5926052B2 publication Critical patent/JPS5926052B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Position Input By Displaying (AREA)

Abstract

PURPOSE: To display a pattern so that the position in the horizontal direction of the near-by part opposed to the light pen can be recognized stably, by deciding the address of the memory to be written in accordance with the second and subsequent pulse outputs of the light pen in one field.
CONSTITUTION: As for this CRT display, the light pen 13 is opposed close to the picture of CRT12, and when it is moved, a pattern following its moving locus is displayed on the CRT picture. This light pen 13 detects plural scanning lines per 1 field, sets the sensitivity in order to obtain the pulse outputs corresponding to the respective lines, and decides the address of the digital memory 11 in which a necessary data is to be written, in accordance with the second and subsequent pulse outputs of the light pen 13 in 1 field. Accordingly, it is possible to get rid of the inconvenience that the horizontal direction coordinate of the light pen 13 indicating position remarkably varies by slight variation in the vertical direction of the light pen 13.
COPYRIGHT: (C)1981,JPO&Japio
JP54151681A 1979-11-21 1979-11-21 How to determine the position of a light pen on a CRT display Expired JPS5926052B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54151681A JPS5926052B2 (en) 1979-11-21 1979-11-21 How to determine the position of a light pen on a CRT display

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54151681A JPS5926052B2 (en) 1979-11-21 1979-11-21 How to determine the position of a light pen on a CRT display

Publications (2)

Publication Number Publication Date
JPS5674739A true JPS5674739A (en) 1981-06-20
JPS5926052B2 JPS5926052B2 (en) 1984-06-23

Family

ID=15523922

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54151681A Expired JPS5926052B2 (en) 1979-11-21 1979-11-21 How to determine the position of a light pen on a CRT display

Country Status (1)

Country Link
JP (1) JPS5926052B2 (en)

Also Published As

Publication number Publication date
JPS5926052B2 (en) 1984-06-23

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