JPS5494306A - Track tracking device - Google Patents
Track tracking deviceInfo
- Publication number
- JPS5494306A JPS5494306A JP164378A JP164378A JPS5494306A JP S5494306 A JPS5494306 A JP S5494306A JP 164378 A JP164378 A JP 164378A JP 164378 A JP164378 A JP 164378A JP S5494306 A JPS5494306 A JP S5494306A
- Authority
- JP
- Japan
- Prior art keywords
- information
- transparent plate
- information tracks
- vibrates
- disc
- 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.)
- Granted
Links
Landscapes
- Mechanical Optical Scanning Systems (AREA)
- Optical Recording Or Reproduction (AREA)
Abstract
PURPOSE: To track information tracks, facilitate vibrating and virtually eliminate the need for adjustment by placing a transparent body having a specified refractive index in the optical path of the optical system for information read-out and vibrating these.
CONSTITUTION: Light reflected to a disc 1 which is rotating in the arrow B direction forms its focus at a photo detector 16 by passing the reverse course, thus the outputs of the photo detector 16 are obtainable according to the information having been recorded in information tracks 2. The transparent plate 23 which is provided in said optical path and has a specified refractive index is vibrated as a piezoelectric crystal 24 is excited by the high frequency output of an oscillator 17. The transparent plate 23 vibrates with the phases of the applied voltage to the piezoelectric crystal 24. On account of diffraction by the transparent plate 23, the read-out bright point 9 of the luminous flux 5 vibrates in the direction of crossing the information tracks 2 over a disc 1 at an amplitude ▵, whereby the track tracking is accomplished.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53001643A JPS6037983B2 (en) | 1978-01-10 | 1978-01-10 | truck tracking device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53001643A JPS6037983B2 (en) | 1978-01-10 | 1978-01-10 | truck tracking device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5494306A true JPS5494306A (en) | 1979-07-26 |
JPS6037983B2 JPS6037983B2 (en) | 1985-08-29 |
Family
ID=11507194
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP53001643A Expired JPS6037983B2 (en) | 1978-01-10 | 1978-01-10 | truck tracking device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6037983B2 (en) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4977605A (en) * | 1972-11-27 | 1974-07-26 | ||
JPS4994304A (en) * | 1973-01-10 | 1974-09-07 | ||
JPS49126305A (en) * | 1973-04-03 | 1974-12-03 | ||
JPS52147403A (en) * | 1976-06-02 | 1977-12-07 | Mitsubishi Electric Corp | Signal generator |
-
1978
- 1978-01-10 JP JP53001643A patent/JPS6037983B2/en not_active Expired
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4977605A (en) * | 1972-11-27 | 1974-07-26 | ||
JPS4994304A (en) * | 1973-01-10 | 1974-09-07 | ||
JPS49126305A (en) * | 1973-04-03 | 1974-12-03 | ||
JPS52147403A (en) * | 1976-06-02 | 1977-12-07 | Mitsubishi Electric Corp | Signal generator |
Also Published As
Publication number | Publication date |
---|---|
JPS6037983B2 (en) | 1985-08-29 |
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