JPS5683874A - Reproducing device - Google Patents
Reproducing deviceInfo
- Publication number
- JPS5683874A JPS5683874A JP16177279A JP16177279A JPS5683874A JP S5683874 A JPS5683874 A JP S5683874A JP 16177279 A JP16177279 A JP 16177279A JP 16177279 A JP16177279 A JP 16177279A JP S5683874 A JPS5683874 A JP S5683874A
- Authority
- JP
- Japan
- Prior art keywords
- tracks
- light beam
- scanning
- detected
- track
- 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
- Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
- Indexing, Searching, Synchronizing, And The Amount Of Synchronization Travel Of Record Carriers (AREA)
- Moving Of Head For Track Selection And Changing (AREA)
Abstract
PURPOSE: To make stable retrieval possible, by scanning the light beam in the direction vertical to tracks and by controlling the scanning beam according to a desired number of tracks.
CONSTITUTION: Light beam 2 is caused to scan in the direction vertical to tracks of recording carrier 7 by reflective mirror 5, and it is detected by 20 that the light beam went across tracks in this scanning, and the light beam is moved by a desired number of tracks by 15. It is detected by track deciding means 25 that the tracks by 15. It is detected by track deciding means 25 that the light beam is not moved, and in this case, scanning of the light beam is performed for the number of tracks larger than the desired that. As the result, stable retrieval is possible independently of track pitch variance, eccentricity, and so on even if drop-out and so on exist between tracks.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16177279A JPS5683874A (en) | 1979-12-12 | 1979-12-12 | Reproducing device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16177279A JPS5683874A (en) | 1979-12-12 | 1979-12-12 | Reproducing device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5683874A true JPS5683874A (en) | 1981-07-08 |
JPS6214910B2 JPS6214910B2 (en) | 1987-04-04 |
Family
ID=15741602
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16177279A Granted JPS5683874A (en) | 1979-12-12 | 1979-12-12 | Reproducing device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5683874A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5960768A (en) * | 1982-09-30 | 1984-04-06 | Toshiba Corp | Disk record reproducer |
US4539664A (en) * | 1978-08-25 | 1985-09-03 | Matsushita Electric Industrial Co., Ltd. | Control system for optical information signal reproduction device |
US4811316A (en) * | 1984-01-10 | 1989-03-07 | Canon Kabushiki Kaisha | Apparatus for seeking a track of an optical information carrier in which a loss of detection signal is compensated for |
-
1979
- 1979-12-12 JP JP16177279A patent/JPS5683874A/en active Granted
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4539664A (en) * | 1978-08-25 | 1985-09-03 | Matsushita Electric Industrial Co., Ltd. | Control system for optical information signal reproduction device |
JPS5960768A (en) * | 1982-09-30 | 1984-04-06 | Toshiba Corp | Disk record reproducer |
JPH0437505B2 (en) * | 1982-09-30 | 1992-06-19 | Tokyo Shibaura Electric Co | |
US4811316A (en) * | 1984-01-10 | 1989-03-07 | Canon Kabushiki Kaisha | Apparatus for seeking a track of an optical information carrier in which a loss of detection signal is compensated for |
Also Published As
Publication number | Publication date |
---|---|
JPS6214910B2 (en) | 1987-04-04 |
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