JPS55105855A - Control unit for trace arm of record player - Google Patents
Control unit for trace arm of record playerInfo
- Publication number
- JPS55105855A JPS55105855A JP1240779A JP1240779A JPS55105855A JP S55105855 A JPS55105855 A JP S55105855A JP 1240779 A JP1240779 A JP 1240779A JP 1240779 A JP1240779 A JP 1240779A JP S55105855 A JPS55105855 A JP S55105855A
- Authority
- JP
- Japan
- Prior art keywords
- arm
- detector
- voltage
- trace
- supplied
- 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 increase the lead-in positioning accuracy and facilitate the position setting by supplying the output of both the arm position detector and the arm stop position setter into the servo amplifier and then performing the arm driving by the output of the servo amplifier.
CONSTITUTION: The control unit comprises arm position detector 1, arm stop position setter 4, servo amplifier 8, arm driving unit 9 and others. Detector 1 is a variable resistor which detects the position of the trace arm and then generates voltage Va in accordance with shift amount L1 of slider 1a contained in arm base 2. Setter 4 sets the stop position of the trace arm and consists of resistor 5 and change- over switch 6 with the correspondence secured between the voltage of each contact of switch 6 and the lead-in position. Then voltage Vb of output terminal 7 is supplied to one side of amplifier 8, and at the same time voltage Va of output terminal 3 in detector 1 is supplied to the other side respectively. Thus differential voltage Vr is delivered and then supplied to unit 9 and level detector 10. In such way, the trace arm is shifted, put under the tracing state or under the reset state each.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1240779A JPS55105855A (en) | 1979-02-06 | 1979-02-06 | Control unit for trace arm of record player |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1240779A JPS55105855A (en) | 1979-02-06 | 1979-02-06 | Control unit for trace arm of record player |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55105855A true JPS55105855A (en) | 1980-08-13 |
Family
ID=11804399
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1240779A Pending JPS55105855A (en) | 1979-02-06 | 1979-02-06 | Control unit for trace arm of record player |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55105855A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5928269A (en) * | 1982-08-07 | 1984-02-14 | Akai Electric Co Ltd | Automatic music selector of record player |
FR2561424A1 (en) * | 1983-11-30 | 1985-09-20 | Pioneer Electronic Corp | APPARATUS FOR POSITIONING THE READER OF A DATA READING APPARATUS |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5023610A (en) * | 1973-06-30 | 1975-03-13 |
-
1979
- 1979-02-06 JP JP1240779A patent/JPS55105855A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5023610A (en) * | 1973-06-30 | 1975-03-13 |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5928269A (en) * | 1982-08-07 | 1984-02-14 | Akai Electric Co Ltd | Automatic music selector of record player |
FR2561424A1 (en) * | 1983-11-30 | 1985-09-20 | Pioneer Electronic Corp | APPARATUS FOR POSITIONING THE READER OF A DATA READING APPARATUS |
US4646278A (en) * | 1983-11-30 | 1987-02-24 | Pioneer Electronic Corporation | Pick-up positioning apparatus for data playback apparatus |
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