JPS5466857A - Video information read system - Google Patents
Video information read systemInfo
- 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
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
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)
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 |
-
1977
- 1977-11-08 JP JP13302477A patent/JPS5466857A/en active Pending
Patent Citations (1)
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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