JPS5671801A - Measuring device for record playing time - Google Patents
Measuring device for record playing timeInfo
- Publication number
- JPS5671801A JPS5671801A JP14685579A JP14685579A JPS5671801A JP S5671801 A JPS5671801 A JP S5671801A JP 14685579 A JP14685579 A JP 14685579A JP 14685579 A JP14685579 A JP 14685579A JP S5671801 A JPS5671801 A JP S5671801A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- disc
- time
- turntable
- revolution
- 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
- Indexing, Searching, Synchronizing, And The Amount Of Synchronization Travel Of Record Carriers (AREA)
Abstract
PURPOSE: To accurately measure the time for recorded music, by detecting the sound groove and lead groove of a record disc optically and operating a timer after converting the rotating angle of a turntable into time.
CONSTITUTION: Signal bands 3, 5 are provided on a signal disc 1 according to number of revolutions, and a 45-revolution signal 4 and a 331/3 signal 6 are concentrically provided. Further, the signal disc 1 and a servomotor 26 are fixed to a drive shaft 26a of the turntable 7 and a sensor 9 is provided opposingly to the signal disc 1. Accordingly, the signal disc rotates accompanied with the revolution of the turn table 7 and a signal is obtained from the sensor 9. This signal is fed to a pulse generator 10 to shape the waveform into pulse waves, and this number of pulses is counted at a pulse count timer 15 to display time.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14685579A JPS5671801A (en) | 1979-11-12 | 1979-11-12 | Measuring device for record playing time |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14685579A JPS5671801A (en) | 1979-11-12 | 1979-11-12 | Measuring device for record playing time |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5671801A true JPS5671801A (en) | 1981-06-15 |
Family
ID=15417071
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14685579A Pending JPS5671801A (en) | 1979-11-12 | 1979-11-12 | Measuring device for record playing time |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5671801A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20200062305A (en) | 2018-04-24 | 2020-06-03 | 닛폰세이테츠 가부시키가이샤 | How to charter charter |
-
1979
- 1979-11-12 JP JP14685579A patent/JPS5671801A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20200062305A (en) | 2018-04-24 | 2020-06-03 | 닛폰세이테츠 가부시키가이샤 | How to charter charter |
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