JPS57166637A - Light pen for video projector - Google Patents

Light pen for video projector

Info

Publication number
JPS57166637A
JPS57166637A JP56050157A JP5015781A JPS57166637A JP S57166637 A JPS57166637 A JP S57166637A JP 56050157 A JP56050157 A JP 56050157A JP 5015781 A JP5015781 A JP 5015781A JP S57166637 A JPS57166637 A JP S57166637A
Authority
JP
Japan
Prior art keywords
picture
computer
signal
projector
switch
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
JP56050157A
Other languages
Japanese (ja)
Inventor
Katsuro Osawa
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP56050157A priority Critical patent/JPS57166637A/en
Publication of JPS57166637A publication Critical patent/JPS57166637A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/042—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means
    • G06F3/0425—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means using a single imaging device like a video camera for tracking the absolute position of a single or a plurality of objects with respect to an imaged reference surface, e.g. video camera imaging a display or a projection screen, a table or a wall surface, on which a computer generated image is displayed or projected
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
    • G06F3/037—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor using the raster scan of a cathode-ray tube [CRT] for detecting the position of the member, e.g. light pens cooperating with CRT monitors

Abstract

PURPOSE:To switch to a picture which an operator desires, by putting the tip of an indicating bar to a computer processing picture, receiving an optical scanning signal from a projector with a photodetector, converting it to an electric signal, and transmitting it to a receiver. CONSTITUTION:A video projector 3 is direct-coupled with an electronic computer 5, and a computer processing picture outputted from the computer 5 is projected on a screen 1 by the projector 3. In this state, when it is desired to switch a picture, the tip of an indicating bar 2 is put on a desired spot of the picture, for instance, Z by operating a switch 7. As a result, an optical scanning signal from the projector 3 is received by a photodetector 6, and is converted to an electric signal. This signal is transmitted to a receiver 4 through a transmitting circuit 9. Subsequently, the receiever 4 sends a receiving signal to the computer 5, and in accordance with its signal, the computer 5 switches to a picture which an operator desires.
JP56050157A 1981-04-03 1981-04-03 Light pen for video projector Pending JPS57166637A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56050157A JPS57166637A (en) 1981-04-03 1981-04-03 Light pen for video projector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56050157A JPS57166637A (en) 1981-04-03 1981-04-03 Light pen for video projector

Publications (1)

Publication Number Publication Date
JPS57166637A true JPS57166637A (en) 1982-10-14

Family

ID=12851349

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56050157A Pending JPS57166637A (en) 1981-04-03 1981-04-03 Light pen for video projector

Country Status (1)

Country Link
JP (1) JPS57166637A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01147498A (en) * 1987-10-22 1989-06-09 Wang Lab Inc Electronic light pointer for projection type monitor
JPH02171822A (en) * 1988-12-23 1990-07-03 Mitsubishi Electric Corp Large screen system device
EP1510407A3 (en) * 2003-09-01 2005-07-27 Matsushita Electric Industrial Co., Ltd. Image displaying apparatus

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4841880U (en) * 1971-09-25 1973-05-29
JPS49115432A (en) * 1973-03-03 1974-11-05
JPS5051727A (en) * 1973-09-06 1975-05-08
JPS5468117A (en) * 1977-10-31 1979-06-01 Ibm Talkie protector indicator

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4841880U (en) * 1971-09-25 1973-05-29
JPS49115432A (en) * 1973-03-03 1974-11-05
JPS5051727A (en) * 1973-09-06 1975-05-08
JPS5468117A (en) * 1977-10-31 1979-06-01 Ibm Talkie protector indicator

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01147498A (en) * 1987-10-22 1989-06-09 Wang Lab Inc Electronic light pointer for projection type monitor
JPH02171822A (en) * 1988-12-23 1990-07-03 Mitsubishi Electric Corp Large screen system device
EP1510407A3 (en) * 2003-09-01 2005-07-27 Matsushita Electric Industrial Co., Ltd. Image displaying apparatus

Similar Documents

Publication Publication Date Title
KR900017381A (en) User programmable switching device
MY110481A (en) System for wireless transmitting and receiving a video
DE69321575T2 (en) Broadcast signal receiver
JPS54100222A (en) Remote control device
KR900017293A (en) Audio and video switching device
MY108004A (en) Image signal processing apparatus.
JPS57166637A (en) Light pen for video projector
JPS5710594A (en) Remote control originating device
JPS5469031A (en) Electronic desk computer
JPS5548976A (en) Photoelectric conversion element
JPS51128571A (en) Portable electronic watch
JPS579182A (en) Signal source switching device for television picture receiver
KR950006051B1 (en) Projection tv used as electronic black board too
JPS53105933A (en) Television receiver equipped with picture magnifying function
JPS6444179A (en) Television receiver
JPS5674733A (en) Data input device
JPS57150836A (en) Remote control release device of camera
JPS5513579A (en) Remote control unit for television receiver
DE3850302D1 (en) Device for tuning a video recorder.
JPS53117929A (en) Power circuit
JPS5398719A (en) Letter and picture communication unit
JPS5397323A (en) Still picture scanning carving system
JPS5423425A (en) Beam index color television picture receiver
JPS57202172A (en) Picture input and output device
JPS54144818A (en) Remote control unit for color television receiver