JPS6446671A - Optical tracking device - Google Patents
Optical tracking deviceInfo
- Publication number
- JPS6446671A JPS6446671A JP20379787A JP20379787A JPS6446671A JP S6446671 A JPS6446671 A JP S6446671A JP 20379787 A JP20379787 A JP 20379787A JP 20379787 A JP20379787 A JP 20379787A JP S6446671 A JPS6446671 A JP S6446671A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- horizontal synchronizing
- synchronizing signal
- blanking periods
- transformer
- 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
Abstract
PURPOSE:To reduce the interference of noise in a video signal period and to track a target with high accuracy by putting generated noise of a switching power source in blanking periods of the horizontal synchronizing signal of an image pickup device. CONSTITUTION:A synchronizing circuit 18 receives the horizontal synchronizing signal from the image pickup device and actuates a driving circuit 12 to turn on and off a transistor TR11 while actuating an exciting energy absorbing circuit 20 through a gate circuit 19. At this time, when the charging voltage of a capacitor C15 exceeds a specific value, the circuit 20 is actuated through the circuit 19. Then the TR22 in the circuit 20 is turned on to supply a current from a DC power source 21 through the winding n3 of a transformer 17 and at the same time, the charged energy of the transformer 17 is regenerated on an input side. Then an absorbing circuit 20 operates in blanking periods of the horizontal synchronizing signal to regenerate the energy remaining in the transformer 17 on the power source input side. Consequently, the current of the winding n3 becomes zero in the blanking periods of the horizontal synchronizing signal and the generation of noise is put in the blanking periods.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP20379787A JPS6446671A (en) | 1987-08-17 | 1987-08-17 | Optical tracking device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP20379787A JPS6446671A (en) | 1987-08-17 | 1987-08-17 | Optical tracking device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6446671A true JPS6446671A (en) | 1989-02-21 |
Family
ID=16479902
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP20379787A Pending JPS6446671A (en) | 1987-08-17 | 1987-08-17 | Optical tracking device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6446671A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0552955A (en) * | 1991-08-27 | 1993-03-02 | Fujitsu Ltd | Infrared rays image device |
JPWO2015166714A1 (en) * | 2014-05-02 | 2017-04-20 | 富士フイルム株式会社 | Ranging device, ranging method, and ranging program |
-
1987
- 1987-08-17 JP JP20379787A patent/JPS6446671A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0552955A (en) * | 1991-08-27 | 1993-03-02 | Fujitsu Ltd | Infrared rays image device |
JPWO2015166714A1 (en) * | 2014-05-02 | 2017-04-20 | 富士フイルム株式会社 | Ranging device, ranging method, and ranging program |
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