JPS6454411A - Synchronizing signal generating method - Google Patents
Synchronizing signal generating methodInfo
- Publication number
- JPS6454411A JPS6454411A JP62210654A JP21065487A JPS6454411A JP S6454411 A JPS6454411 A JP S6454411A JP 62210654 A JP62210654 A JP 62210654A JP 21065487 A JP21065487 A JP 21065487A JP S6454411 A JPS6454411 A JP S6454411A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- circuit
- inputted
- synchronizing signal
- image
- 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 simplify the structure and reduce the size by smoothing a speed signal obtained by differentiating a position signal from an optical deflector, then performing voltage-frequency conversion and multiplication, and using the resulting signal as a synchronizing signal for reading or recording an image, etc. CONSTITUTION:The position signal P from a position sensor incorporated in a galvanometer mirror 10 is inputted to a differentiating circuit 34. The output signal of the differentiating circuit 34 is inputted to an N-multiplying PLL (NPLL) circuit 38 through a voltage-frequency (V/F) converting circuit 36 and the output signal of the NPLL circuit 38 is inputted to the 1st synchronizing signal input terminal of an A/D converting circuit 46 as the synchronizing signal. The output signal of a comparing circuit 50, on the other hand, is inputted as a start point control signal 52 to the 2nd synchronizing signal input terminal of the A/D converting circuit 46. Then the output signal of the A/D converting circuit 46 is image-processed at need and then inputted to an image reproducing device such as a CRT and a laser printer to reproduce a visual image. Consequently, the constitution is simplified and reduced in size.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62210654A JPS6454411A (en) | 1987-08-24 | 1987-08-24 | Synchronizing signal generating method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62210654A JPS6454411A (en) | 1987-08-24 | 1987-08-24 | Synchronizing signal generating method |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6454411A true JPS6454411A (en) | 1989-03-01 |
Family
ID=16592889
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62210654A Pending JPS6454411A (en) | 1987-08-24 | 1987-08-24 | Synchronizing signal generating method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6454411A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19806664C1 (en) * | 1998-02-18 | 1999-04-08 | Fraunhofer Ges Forschung | Image spot clock generator for digital exposure device |
-
1987
- 1987-08-24 JP JP62210654A patent/JPS6454411A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19806664C1 (en) * | 1998-02-18 | 1999-04-08 | Fraunhofer Ges Forschung | Image spot clock generator for digital exposure device |
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