JPS55921A - Automatic controller - Google Patents
Automatic controllerInfo
- Publication number
- JPS55921A JPS55921A JP7321278A JP7321278A JPS55921A JP S55921 A JPS55921 A JP S55921A JP 7321278 A JP7321278 A JP 7321278A JP 7321278 A JP7321278 A JP 7321278A JP S55921 A JPS55921 A JP S55921A
- Authority
- JP
- Japan
- Prior art keywords
- relatively
- lens
- ringing voltage
- disc
- signal processing
- 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
- Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
- Control Of Position Or Direction (AREA)
- Automatic Focus Adjustment (AREA)
Abstract
PURPOSE: To improve leading-in performance and also to realize the simplification and cost reduction of an automatic control system by allowing a disc to stay in the range of a detector at a relatively-slow speed relatively to a lens when leading the system in.
CONSTITUTION: Ringing voltage generating circuit 4, consisting of a capacitor and inductance, applies its output to signal processing circuit 2. Switch 5, interlocking to the regenerative-mode operation button, is at the ON side for regeneration and at the OFF side for other operations. The ON-side terminal is connected to power supply +E. Because of the above-mentioned consitution, a ringing voltage is applied to signal processing circuit 2 for a certain time after the regenerative operation, and the voice coil lens moved vertically according to the ringing voltage. Consequently, both the disc and lens are allowed to stay relatively within the range of the detector moving at a relatively-slow speed, so that the system can be led in.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7321278A JPS55921A (en) | 1978-06-19 | 1978-06-19 | Automatic controller |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7321278A JPS55921A (en) | 1978-06-19 | 1978-06-19 | Automatic controller |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55921A true JPS55921A (en) | 1980-01-07 |
Family
ID=13511617
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7321278A Pending JPS55921A (en) | 1978-06-19 | 1978-06-19 | Automatic controller |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55921A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62239327A (en) * | 1986-04-09 | 1987-10-20 | Sanyo Electric Co Ltd | Focus searching circuit |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5197320A (en) * | 1975-02-21 | 1976-08-26 |
-
1978
- 1978-06-19 JP JP7321278A patent/JPS55921A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5197320A (en) * | 1975-02-21 | 1976-08-26 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62239327A (en) * | 1986-04-09 | 1987-10-20 | Sanyo Electric Co Ltd | Focus searching circuit |
JPH071549B2 (en) * | 1986-04-09 | 1995-01-11 | 三洋電機株式会社 | Focus search circuit |
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