JPS5466857A - Video information read system - Google Patents

Video information read system

Info

Publication number
JPS5466857A
JPS5466857A JP13302477A JP13302477A JPS5466857A JP S5466857 A JPS5466857 A JP S5466857A JP 13302477 A JP13302477 A JP 13302477A JP 13302477 A JP13302477 A JP 13302477A JP S5466857 A JPS5466857 A JP S5466857A
Authority
JP
Japan
Prior art keywords
video information
analyzer
dichromaticity
photo
correspondence
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
JP13302477A
Other languages
Japanese (ja)
Inventor
Yasuo Kishi
Toshiaki Yokoo
Takeo Fukatsu
Taketo Yazaki
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.)
National Institute of Advanced Industrial Science and Technology AIST
Original Assignee
Agency of Industrial Science and Technology
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 Agency of Industrial Science and Technology filed Critical Agency of Industrial Science and Technology
Priority to JP13302477A priority Critical patent/JPS5466857A/en
Publication of JPS5466857A publication Critical patent/JPS5466857A/en
Pending legal-status Critical Current

Links

Landscapes

  • Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)

Abstract

PURPOSE: To improve the contrast of reconstructed images by interposing an auxiliary analyzer between a video information memory plate and an analyzer.
CONSTITUTION: An auxiliary analyzer 14 which has the photo dicharomaticity of the same size as that of the region 10b of the lower half having been written so as to reduce the photo dichromaticity in correspondence to the image dark parts in a video information memory plate 10 and of the direction orthogonal thereto is interposed between the video information memory plate 10 to the region 10a of the upper half whereof writing has been so performed that the pthoto dichromaticity becomes largest in correspondence to the image bright parts and to the region 10b of the lower half whereof writing has been so performed that the photo dichromaticity becomes small in correspondence to the image dark parts. and an analyzer 12. Then, the bright part 13a is recontructed in the upper half on the screen 13 and the dark part 13b in the lower half with infinite contrast by the light from the read light source immediate before the polarizer 11.
COPYRIGHT: (C)1979,JPO&Japio
JP13302477A 1977-11-08 1977-11-08 Video information read system Pending JPS5466857A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13302477A JPS5466857A (en) 1977-11-08 1977-11-08 Video information read system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13302477A JPS5466857A (en) 1977-11-08 1977-11-08 Video information read system

Publications (1)

Publication Number Publication Date
JPS5466857A true JPS5466857A (en) 1979-05-29

Family

ID=15095003

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13302477A Pending JPS5466857A (en) 1977-11-08 1977-11-08 Video information read system

Country Status (1)

Country Link
JP (1) JPS5466857A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS523445A (en) * 1975-06-27 1977-01-11 Agency Of Ind Science & Technol Reading out device for optical information

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS523445A (en) * 1975-06-27 1977-01-11 Agency Of Ind Science & Technol Reading out device for optical information

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