JPS564834A - Photo detection control system by light pen - Google Patents

Photo detection control system by light pen

Info

Publication number
JPS564834A
JPS564834A JP7904079A JP7904079A JPS564834A JP S564834 A JPS564834 A JP S564834A JP 7904079 A JP7904079 A JP 7904079A JP 7904079 A JP7904079 A JP 7904079A JP S564834 A JPS564834 A JP S564834A
Authority
JP
Japan
Prior art keywords
light
light pen
detection signal
detected
control system
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
JP7904079A
Other languages
Japanese (ja)
Inventor
Kozo Ishikawa
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP7904079A priority Critical patent/JPS564834A/en
Publication of JPS564834A publication Critical patent/JPS564834A/en
Pending legal-status Critical Current

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Abstract

PURPOSE: To exclude the incorrect signal based on the malfunction of light pen, by monitoring the timing to detect the light at the N+Kth rester, after detecting the light of the Nth raster by the light pen.
CONSTITUTION: The detection range of a light pen covers several rasters. Further, since the rester scanning is made with a given order and a given constant speed, each raster is sequentially detected at a given time. First, when the first light point A is detected, the light detection signal is input to FF and attached clock. When the detection signal for the second light spot B is in agreement with the output of the counter corresponding to the detected time interval between specified rasters, both the output signals are input to the gate to obtain normal light detection signal.
COPYRIGHT: (C)1981,JPO&Japio
JP7904079A 1979-06-25 1979-06-25 Photo detection control system by light pen Pending JPS564834A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7904079A JPS564834A (en) 1979-06-25 1979-06-25 Photo detection control system by light pen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7904079A JPS564834A (en) 1979-06-25 1979-06-25 Photo detection control system by light pen

Publications (1)

Publication Number Publication Date
JPS564834A true JPS564834A (en) 1981-01-19

Family

ID=13678795

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7904079A Pending JPS564834A (en) 1979-06-25 1979-06-25 Photo detection control system by light pen

Country Status (1)

Country Link
JP (1) JPS564834A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5872237A (en) * 1981-10-27 1983-04-30 Hitachi Ltd Picture element detecting device using light pen
JPS62175588A (en) * 1985-10-02 1987-08-01 モダイン・マニユフアクチヤリング・カンパニ− Condenser with flow path having small fluid diameter
JPS62207572A (en) * 1986-03-03 1987-09-11 モダイン・マニユフアクチヤリング・カンパニ− Production of heat exchanger
JPH02127966U (en) * 1989-03-30 1990-10-22

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5872237A (en) * 1981-10-27 1983-04-30 Hitachi Ltd Picture element detecting device using light pen
JPH0315769B2 (en) * 1981-10-27 1991-03-01 Hitachi Ltd
JPS62175588A (en) * 1985-10-02 1987-08-01 モダイン・マニユフアクチヤリング・カンパニ− Condenser with flow path having small fluid diameter
JPH0587752B2 (en) * 1985-10-02 1993-12-17 Modine Mfg Co
JPS62207572A (en) * 1986-03-03 1987-09-11 モダイン・マニユフアクチヤリング・カンパニ− Production of heat exchanger
JPH078430B2 (en) * 1986-03-03 1995-02-01 モダイン・マニユフアクチヤリング・カンパニ− How to make a heat exchanger
JPH02127966U (en) * 1989-03-30 1990-10-22

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