JPS52108801A - Size detector for records - Google Patents
Size detector for recordsInfo
- Publication number
- JPS52108801A JPS52108801A JP2593776A JP2593776A JPS52108801A JP S52108801 A JPS52108801 A JP S52108801A JP 2593776 A JP2593776 A JP 2593776A JP 2593776 A JP2593776 A JP 2593776A JP S52108801 A JPS52108801 A JP S52108801A
- Authority
- JP
- Japan
- Prior art keywords
- records
- size detector
- record
- focusing
- simplify
- 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
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
- G11B19/02—Control of operating function, e.g. switching from recording to reproducing
- G11B19/12—Control of operating function, e.g. switching from recording to reproducing by sensing distinguishing features of or on records, e.g. diameter end mark
- G11B19/124—Control of operating function, e.g. switching from recording to reproducing by sensing distinguishing features of or on records, e.g. diameter end mark involving the detection of diameter of disks
Landscapes
- Automatic Focus Adjustment (AREA)
- Optical Head (AREA)
Abstract
PURPOSE:To obtain the size information of a record so as to simplify the construction by focusing the edge of the record on a screen to detect the focused position with the use of an optical detecting element.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2593776A JPS52108801A (en) | 1976-03-10 | 1976-03-10 | Size detector for records |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2593776A JPS52108801A (en) | 1976-03-10 | 1976-03-10 | Size detector for records |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS52108801A true JPS52108801A (en) | 1977-09-12 |
Family
ID=12179672
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2593776A Pending JPS52108801A (en) | 1976-03-10 | 1976-03-10 | Size detector for records |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS52108801A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5682763U (en) * | 1979-11-30 | 1981-07-03 | ||
JPS58100234A (en) * | 1981-12-10 | 1983-06-14 | Teac Co | Optical reproducing device |
JPS58102340A (en) * | 1981-12-11 | 1983-06-17 | Teac Co | Optical reproducing device |
JPH02138833A (en) * | 1988-11-18 | 1990-05-28 | Mitsubishi Motors Corp | Fire position detector within engine combustion chamber |
-
1976
- 1976-03-10 JP JP2593776A patent/JPS52108801A/en active Pending
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5682763U (en) * | 1979-11-30 | 1981-07-03 | ||
JPS58100234A (en) * | 1981-12-10 | 1983-06-14 | Teac Co | Optical reproducing device |
JPS6360448B2 (en) * | 1981-12-10 | 1988-11-24 | ||
JPS58102340A (en) * | 1981-12-11 | 1983-06-17 | Teac Co | Optical reproducing device |
JPS6343814B2 (en) * | 1981-12-11 | 1988-09-01 | Teac Corp | |
JPH02138833A (en) * | 1988-11-18 | 1990-05-28 | Mitsubishi Motors Corp | Fire position detector within engine combustion chamber |
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