JPS54107310A - Optical type reproducer - Google Patents
Optical type reproducerInfo
- Publication number
- JPS54107310A JPS54107310A JP1378878A JP1378878A JPS54107310A JP S54107310 A JPS54107310 A JP S54107310A JP 1378878 A JP1378878 A JP 1378878A JP 1378878 A JP1378878 A JP 1378878A JP S54107310 A JPS54107310 A JP S54107310A
- Authority
- JP
- Japan
- Prior art keywords
- medium
- information
- detected
- phase
- controlling
- 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
- Automatic Focus Adjustment (AREA)
- Optical Recording Or Reproduction (AREA)
Abstract
PURPOSE: To achieve the stabilization of tracking controlling by vibrating the projection beam to a recording medium and detecting the reflected components thereof.
CONSTITUTION: A beam 4 is projected 3 to a medium 1 which has been recorded with information such as composite PCM signals including synchronizing signal, etc. through arraying of optically detectable unit recording regions. For the purpose of scanning, the medium 1 and apparatus 3 are moved and driven 5, 2 and the information is detected 13 by the reflected beam from the medium 1. Within the information detection range, the beam 4 is vibrated 10 and from the detection outputs, the vibtating frequency components of the beam 4 are detected 28 and the phase thereof and the phase of a reference signal 29 are compared to form 31 a tracking control signal, based on which controlling 23 is so performed as to project the beam 4 in the position optimum for information tracks.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1378878A JPS54107310A (en) | 1978-02-09 | 1978-02-09 | Optical type reproducer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1378878A JPS54107310A (en) | 1978-02-09 | 1978-02-09 | Optical type reproducer |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54107310A true JPS54107310A (en) | 1979-08-23 |
Family
ID=11842981
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1378878A Pending JPS54107310A (en) | 1978-02-09 | 1978-02-09 | Optical type reproducer |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54107310A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58203636A (en) * | 1982-05-20 | 1983-11-28 | Trio Kenwood Corp | Method and device for detection of tracking error signal with information reading device |
-
1978
- 1978-02-09 JP JP1378878A patent/JPS54107310A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58203636A (en) * | 1982-05-20 | 1983-11-28 | Trio Kenwood Corp | Method and device for detection of tracking error signal with information reading device |
JPH0318255B2 (en) * | 1982-05-20 | 1991-03-12 | Kenutsudo Kk |
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