JPS5579483A - Reconstruction system of hologram signal - Google Patents
Reconstruction system of hologram signalInfo
- Publication number
- JPS5579483A JPS5579483A JP15456278A JP15456278A JPS5579483A JP S5579483 A JPS5579483 A JP S5579483A JP 15456278 A JP15456278 A JP 15456278A JP 15456278 A JP15456278 A JP 15456278A JP S5579483 A JPS5579483 A JP S5579483A
- Authority
- JP
- Japan
- Prior art keywords
- saw tooth
- binary
- pulse
- signal
- comparators
- 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
- Holo Graphy (AREA)
Abstract
PURPOSE: To enable correct signals to be read without causing division and missing of binary codes by lighting and driving light sources with the saw tooth wave currents having suitable periods and peak values.
CONSTITUTION: Light sources are lighted and driven by saw tooth wave currents and the output signals of photo sensors 21W25 are inputted to current-voltage converting circuits 511W515. Here, the periods of the saw tooth wave current are made sufficiently high and the peak values sufficiently high as well. If it is assumed that the sensors 21, 22 be photo detecting bits, then the saw tooth waves appear only at V1, V2 of voltage signals V1WV5 and the square wave pulse signifying 1 appears only at the binary signal D1' through comparators 521W525, binary converting circuit 53, integrating circuits 541..., comparators 551... Now, when the sensor 23 receives noise light, the pulse P3 becomes the one having a shorter time width than P1, P2 and no change is seen in the pulse number in the binary signal D1 of the circuit 53, hence the signal D1' is obtained and 1 may be read out correctly.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15456278A JPS5579483A (en) | 1978-12-12 | 1978-12-12 | Reconstruction system of hologram signal |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15456278A JPS5579483A (en) | 1978-12-12 | 1978-12-12 | Reconstruction system of hologram signal |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5579483A true JPS5579483A (en) | 1980-06-14 |
Family
ID=15586950
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15456278A Pending JPS5579483A (en) | 1978-12-12 | 1978-12-12 | Reconstruction system of hologram signal |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5579483A (en) |
-
1978
- 1978-12-12 JP JP15456278A patent/JPS5579483A/en active Pending
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