JPS54141522A - Synthesizer of plurality of pictures of projection type - Google Patents

Synthesizer of plurality of pictures of projection type

Info

Publication number
JPS54141522A
JPS54141522A JP4962878A JP4962878A JPS54141522A JP S54141522 A JPS54141522 A JP S54141522A JP 4962878 A JP4962878 A JP 4962878A JP 4962878 A JP4962878 A JP 4962878A JP S54141522 A JPS54141522 A JP S54141522A
Authority
JP
Japan
Prior art keywords
picture
extended
erasing
space
less
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
JP4962878A
Other languages
Japanese (ja)
Other versions
JPS5911306B2 (en
Inventor
Sadayoshi Yoshikawa
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 Home Electronics Ltd
NEC Corp
Original Assignee
NEC Home Electronics Ltd
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 Home Electronics Ltd, Nippon Electric Co Ltd filed Critical NEC Home Electronics Ltd
Priority to JP53049628A priority Critical patent/JPS5911306B2/en
Publication of JPS54141522A publication Critical patent/JPS54141522A/en
Publication of JPS5911306B2 publication Critical patent/JPS5911306B2/en
Expired legal-status Critical Current

Links

Abstract

PURPOSE: To improve the deficiency of information for extended picture and the lowering in picture quality of the second picture, by providing the means erasing a part of the extended picture, the means erasing the second picture, and the means projecting the second picture to the erased space, in the projection type plurality picture synthesizer.
CONSTITUTION: The video erase signal generator 13 generates the signal erasing the video signal during specific period of field and line taking the synchronizing signal given from the circuit 12 as reference and this is given to the video amplifier 11. The picture displayed on the cathode ray tubes 16, 17, 18 is videoed out on the projective screen with the lenses 19, 20, 21. On the other hand, the second picture is displayed on the cathode ray tube 29, and it is projected on the space of extended picture on the screen with the lens 32. Since the second picture is not made less for the number of scanning lines, no deterioration of picture is present, and the erasing space can be less for the extended picture, then the information deficiency of the extended picture can be less.
COPYRIGHT: (C)1979,JPO&Japio
JP53049628A 1978-04-26 1978-04-26 Projection type multiple image synthesis device Expired JPS5911306B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP53049628A JPS5911306B2 (en) 1978-04-26 1978-04-26 Projection type multiple image synthesis device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP53049628A JPS5911306B2 (en) 1978-04-26 1978-04-26 Projection type multiple image synthesis device

Publications (2)

Publication Number Publication Date
JPS54141522A true JPS54141522A (en) 1979-11-02
JPS5911306B2 JPS5911306B2 (en) 1984-03-14

Family

ID=12836478

Family Applications (1)

Application Number Title Priority Date Filing Date
JP53049628A Expired JPS5911306B2 (en) 1978-04-26 1978-04-26 Projection type multiple image synthesis device

Country Status (1)

Country Link
JP (1) JPS5911306B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5545262A (en) * 1978-09-26 1980-03-29 Sharp Corp Projection-type television receiving unit
JPS5985504A (en) * 1982-11-09 1984-05-17 Meidensha Electric Mfg Co Ltd Video method for remote control supervision
JPS6041888A (en) * 1983-08-17 1985-03-05 I S S:Kk Method of apparatus for displaying two or more kind of video or picture simultaneously on the same screen

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3113180A (en) * 1960-09-28 1963-12-03 Philco Corp Composite image reproducing means
US3560644A (en) * 1968-02-29 1971-02-02 Us Navy Multiple projection television system
JPS5237712A (en) * 1975-09-20 1977-03-23 Sony Corp Picture reproduction equipment

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3113180A (en) * 1960-09-28 1963-12-03 Philco Corp Composite image reproducing means
US3560644A (en) * 1968-02-29 1971-02-02 Us Navy Multiple projection television system
JPS5237712A (en) * 1975-09-20 1977-03-23 Sony Corp Picture reproduction equipment

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5545262A (en) * 1978-09-26 1980-03-29 Sharp Corp Projection-type television receiving unit
JPS5985504A (en) * 1982-11-09 1984-05-17 Meidensha Electric Mfg Co Ltd Video method for remote control supervision
JPS6041888A (en) * 1983-08-17 1985-03-05 I S S:Kk Method of apparatus for displaying two or more kind of video or picture simultaneously on the same screen

Also Published As

Publication number Publication date
JPS5911306B2 (en) 1984-03-14

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