JPS5646266A - Magnification variation controller of optical system scanning mechanism - Google Patents
Magnification variation controller of optical system scanning mechanismInfo
- Publication number
- JPS5646266A JPS5646266A JP12157579A JP12157579A JPS5646266A JP S5646266 A JPS5646266 A JP S5646266A JP 12157579 A JP12157579 A JP 12157579A JP 12157579 A JP12157579 A JP 12157579A JP S5646266 A JPS5646266 A JP S5646266A
- Authority
- JP
- Japan
- Prior art keywords
- pll
- drive part
- optical system
- scanning mechanism
- 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
Abstract
PURPOSE:To increase the number of set magnification variation modes while attaining high-speed operation and high reliability by supplying PLL with pulses obtained on the basis of reference drive and by using its output as the reference signal of a drive part for an optical system scanning mechanism. CONSTITUTION:Pulses generated by encoder 22 according to the operation of reference drive part 20 are supplied to PLL-1. The output of PLL-1 is supplied to PLL-2 and the drive system for the optical system scanning mechanism. The output of PLL-2 is fed back to PLL-2 via frequency-dividing pulse counter 30 and also to PLL-1 via variable-frequency-dividing pulse counter 31. On the other hand, drive part 21 for the optical system scanning mechanism operates synchronizing with drive part 20 and generated pulses from encoder 32 accompanying the operation of drive part 21 are supplied to phase comparator 34 and compared to the output of PLL-1. On the basis of its comparison output, drive part 21 is controlled.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12157579A JPS5646266A (en) | 1979-09-22 | 1979-09-22 | Magnification variation controller of optical system scanning mechanism |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12157579A JPS5646266A (en) | 1979-09-22 | 1979-09-22 | Magnification variation controller of optical system scanning mechanism |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5646266A true JPS5646266A (en) | 1981-04-27 |
Family
ID=14814622
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12157579A Pending JPS5646266A (en) | 1979-09-22 | 1979-09-22 | Magnification variation controller of optical system scanning mechanism |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5646266A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1698957A1 (en) * | 2005-03-04 | 2006-09-06 | Fanuc Ltd | a PLL for synchronous operation of a distributed control system |
-
1979
- 1979-09-22 JP JP12157579A patent/JPS5646266A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1698957A1 (en) * | 2005-03-04 | 2006-09-06 | Fanuc Ltd | a PLL for synchronous operation of a distributed control system |
US7432674B2 (en) | 2005-03-04 | 2008-10-07 | Fanuc Ltd. | Control system |
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