JPS5758266A - Automatic music selecting device - Google Patents
Automatic music selecting deviceInfo
- Publication number
- JPS5758266A JPS5758266A JP13149980A JP13149980A JPS5758266A JP S5758266 A JPS5758266 A JP S5758266A JP 13149980 A JP13149980 A JP 13149980A JP 13149980 A JP13149980 A JP 13149980A JP S5758266 A JPS5758266 A JP S5758266A
- Authority
- JP
- Japan
- Prior art keywords
- intermusic
- output
- level
- arm
- sensor
- 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
Abstract
PURPOSE: To easily correct a shift of position between the end point of the stylus of the carridge and the intermusic sensor, by level shifting one output level when the output level of the intermusic sensor when the arm is stopped and the intermusic output level thereafter are compared.
CONSTITUTION: Since the holding voltage of a voltage holding section 5b is applied at the time of inversional input of an operational amplifier OP3 of a differential amplifier 5c and the output level of an intermusic sensor after an arm is stopped is applied through a level shift section 5d at the time of noninversional input, a differential voltage of both the inputs is generated to the output of the amplifier 5c. When an eccentricity or a warp exists in a disk, the output of the intermusic sensor changes and the signals having a size and polarity corresponding to the difference are generated to the output of the amplifier 5c. Then, an arm driving section makes fine adjustment to silghtly move the arm in the direction which corresponds to the signal, and, when the difference level becomes larger than a fixed a pulse-like signal is generated to the output and thus detections of intermusic are informed.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13149980A JPS5758266A (en) | 1980-09-24 | 1980-09-24 | Automatic music selecting device |
US06/283,855 US4375092A (en) | 1980-07-17 | 1981-07-16 | Automatic music selecting device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13149980A JPS5758266A (en) | 1980-09-24 | 1980-09-24 | Automatic music selecting device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5758266A true JPS5758266A (en) | 1982-04-07 |
Family
ID=15059432
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13149980A Pending JPS5758266A (en) | 1980-07-17 | 1980-09-24 | Automatic music selecting device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5758266A (en) |
-
1980
- 1980-09-24 JP JP13149980A patent/JPS5758266A/en active Pending
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