JPS5243325A - Threshold value decisive system for detecting light-pen signal - Google Patents

Threshold value decisive system for detecting light-pen signal

Info

Publication number
JPS5243325A
JPS5243325A JP50117725A JP11772575A JPS5243325A JP S5243325 A JPS5243325 A JP S5243325A JP 50117725 A JP50117725 A JP 50117725A JP 11772575 A JP11772575 A JP 11772575A JP S5243325 A JPS5243325 A JP S5243325A
Authority
JP
Japan
Prior art keywords
threshold value
detecting light
pen signal
pen
value decisive
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
JP50117725A
Other languages
English (en)
Other versions
JPS5843773B2 (ja
Inventor
Masashi Hino
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP50117725A priority Critical patent/JPS5843773B2/ja
Publication of JPS5243325A publication Critical patent/JPS5243325A/ja
Publication of JPS5843773B2 publication Critical patent/JPS5843773B2/ja
Expired legal-status Critical Current

Links

Landscapes

  • Position Input By Displaying (AREA)
JP50117725A 1975-10-01 1975-10-01 ライトペンシンゴウケンシユツノシキイチセツテイホウシキ Expired JPS5843773B2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP50117725A JPS5843773B2 (ja) 1975-10-01 1975-10-01 ライトペンシンゴウケンシユツノシキイチセツテイホウシキ

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50117725A JPS5843773B2 (ja) 1975-10-01 1975-10-01 ライトペンシンゴウケンシユツノシキイチセツテイホウシキ

Publications (2)

Publication Number Publication Date
JPS5243325A true JPS5243325A (en) 1977-04-05
JPS5843773B2 JPS5843773B2 (ja) 1983-09-29

Family

ID=14718731

Family Applications (1)

Application Number Title Priority Date Filing Date
JP50117725A Expired JPS5843773B2 (ja) 1975-10-01 1975-10-01 ライトペンシンゴウケンシユツノシキイチセツテイホウシキ

Country Status (1)

Country Link
JP (1) JPS5843773B2 (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07897B1 (ja) * 1988-12-16 1995-01-11

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4949544A (ja) * 1972-09-14 1974-05-14
JPS4973030A (ja) * 1972-11-13 1974-07-15

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4949544A (ja) * 1972-09-14 1974-05-14
JPS4973030A (ja) * 1972-11-13 1974-07-15

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07897B1 (ja) * 1988-12-16 1995-01-11

Also Published As

Publication number Publication date
JPS5843773B2 (ja) 1983-09-29

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