JPS5539950A - Superposition writing preventing system in projection type display system - Google Patents

Superposition writing preventing system in projection type display system

Info

Publication number
JPS5539950A
JPS5539950A JP11221978A JP11221978A JPS5539950A JP S5539950 A JPS5539950 A JP S5539950A JP 11221978 A JP11221978 A JP 11221978A JP 11221978 A JP11221978 A JP 11221978A JP S5539950 A JPS5539950 A JP S5539950A
Authority
JP
Japan
Prior art keywords
display
case
areas
space area
memorized
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
JP11221978A
Other languages
Japanese (ja)
Inventor
Ikuo Nunomura
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 Denshi KK
Original Assignee
Hitachi Denshi KK
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 Denshi KK filed Critical Hitachi Denshi KK
Priority to JP11221978A priority Critical patent/JPS5539950A/en
Publication of JPS5539950A publication Critical patent/JPS5539950A/en
Pending legal-status Critical Current

Links

Landscapes

  • Digital Computer Display Output (AREA)

Abstract

PURPOSE: To obtain the projection image surface to be easily seen by serching for the space area in the case of the display area being superposed on the other and displaying the first found space area.
CONSTITUTION: The data display is inputted to the display data input portion 1, the position and the pattern of the data are generated in the display pattern generating portion 2, and the displayed area is memorized in the memory portion 3 correspondingly to the bit. In this place, the display image surface is divided into N×M areas and one of the divided areas is made correspond to one bit on the memory 3, in the case of empty, it is memorized at "0", and in the case of the finish of displaying, it is memorized at "1". In the case of superposing the display areas with one another, the space area is sought for and the firstly found space area is used for displaying. Thus, the display areas are not superposed nor displayed and the projection image surface to be easily seen can be obtained.
COPYRIGHT: (C)1980,JPO&Japio
JP11221978A 1978-09-14 1978-09-14 Superposition writing preventing system in projection type display system Pending JPS5539950A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11221978A JPS5539950A (en) 1978-09-14 1978-09-14 Superposition writing preventing system in projection type display system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11221978A JPS5539950A (en) 1978-09-14 1978-09-14 Superposition writing preventing system in projection type display system

Publications (1)

Publication Number Publication Date
JPS5539950A true JPS5539950A (en) 1980-03-21

Family

ID=14581225

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11221978A Pending JPS5539950A (en) 1978-09-14 1978-09-14 Superposition writing preventing system in projection type display system

Country Status (1)

Country Link
JP (1) JPS5539950A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60130294A (en) * 1983-12-19 1985-07-11 Matsushita Electric Ind Co Ltd Sampling method of color television signal
JPS63108453A (en) * 1986-10-27 1988-05-13 Canon Inc Electronic equipment
JPH01216612A (en) * 1988-02-24 1989-08-30 Canon Inc Digital filter
JPH01216613A (en) * 1988-02-24 1989-08-30 Canon Inc Digital filter

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60130294A (en) * 1983-12-19 1985-07-11 Matsushita Electric Ind Co Ltd Sampling method of color television signal
JPH038635B2 (en) * 1983-12-19 1991-02-06 Matsushita Electric Ind Co Ltd
JPS63108453A (en) * 1986-10-27 1988-05-13 Canon Inc Electronic equipment
JPH01216612A (en) * 1988-02-24 1989-08-30 Canon Inc Digital filter
JPH01216613A (en) * 1988-02-24 1989-08-30 Canon Inc Digital filter

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