JPS54140413A - Camera - Google Patents
CameraInfo
- Publication number
- JPS54140413A JPS54140413A JP4800278A JP4800278A JPS54140413A JP S54140413 A JPS54140413 A JP S54140413A JP 4800278 A JP4800278 A JP 4800278A JP 4800278 A JP4800278 A JP 4800278A JP S54140413 A JPS54140413 A JP S54140413A
- Authority
- JP
- Japan
- Prior art keywords
- laser
- supplied
- semiconductor laser
- medium
- output
- 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
- Thermal Transfer Or Thermal Recording In General (AREA)
- Optical Recording Or Reproduction (AREA)
Abstract
PURPOSE: To secure the semipermanent preservation by applying the recording/ reproducing method via the laser beam as the non-contact electronic recording/reproducing method.
CONSTITUTION: The picture supplied to optical system 1 is read out in the form of the time-series image information signal by the clock signal of scan control circuit 3 and through photoelectric converter 2 such as CCD or the like. This information signal is then supplied to semiconductor laser driving power source 5 to control the output of the semiconductor laser. And the output light is condensed on turning recording medium 7 by motor 10 and via optical system 6, and the heat of the condensing causes the change which can be detected optically between the medium 7 and the non-irradiation part. When the reflected light from medium 7 is returned to the active region of semiconductor laser 4, laser 4 cuases the quenching phenomenon to cause lowering of the terminal voltage. This terminal voltage is detected at detection circuit 19 and then supplied to central control circuit 20 to control the positions of laser 4 and system 6 as well as the laser output as a whole, etc.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4800278A JPS54140413A (en) | 1978-04-23 | 1978-04-23 | Camera |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4800278A JPS54140413A (en) | 1978-04-23 | 1978-04-23 | Camera |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54140413A true JPS54140413A (en) | 1979-10-31 |
Family
ID=12791093
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4800278A Pending JPS54140413A (en) | 1978-04-23 | 1978-04-23 | Camera |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54140413A (en) |
-
1978
- 1978-04-23 JP JP4800278A patent/JPS54140413A/en active Pending
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