JPS5698754A - Setting device for stop position of pickup arm - Google Patents

Setting device for stop position of pickup arm

Info

Publication number
JPS5698754A
JPS5698754A JP110980A JP110980A JPS5698754A JP S5698754 A JPS5698754 A JP S5698754A JP 110980 A JP110980 A JP 110980A JP 110980 A JP110980 A JP 110980A JP S5698754 A JPS5698754 A JP S5698754A
Authority
JP
Japan
Prior art keywords
stop position
stop
output
pickup arm
prescribed
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
Application number
JP110980A
Other languages
Japanese (ja)
Inventor
Atsuo Ikeda
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Pioneer Corp
Original Assignee
Pioneer Electronic Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Pioneer Electronic Corp filed Critical Pioneer Electronic Corp
Priority to JP110980A priority Critical patent/JPS5698754A/en
Publication of JPS5698754A publication Critical patent/JPS5698754A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To stop a pickup arm at a prescribed position with high precision by controlling the moving speed of the pickup arm near the stop position corresponding to the output of a comparing means and that of a speed detecting means.
CONSTITUTION: The moving speed of tone arm 1 is constant in an area sufficiently away from a prescribed position, and decreases in prescribed mode in an area near a stop position as its moving position approaches to the stop position; and the current flowing through coil 10 is so controlled that it will stop in the area including the stop position. This control is exercised by control circuit 26 having time-current characteristics whose gradient becomes gentle as the tone arm approaches to the stop position. The gradient of time-coil current characteristics is determined by the output of D/A converter 25, and the coil current is determined according to the output of speed detecting circuit 28 for the tone arm.
COPYRIGHT: (C)1981,JPO&Japio
JP110980A 1980-01-09 1980-01-09 Setting device for stop position of pickup arm Pending JPS5698754A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP110980A JPS5698754A (en) 1980-01-09 1980-01-09 Setting device for stop position of pickup arm

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP110980A JPS5698754A (en) 1980-01-09 1980-01-09 Setting device for stop position of pickup arm

Publications (1)

Publication Number Publication Date
JPS5698754A true JPS5698754A (en) 1981-08-08

Family

ID=11492295

Family Applications (1)

Application Number Title Priority Date Filing Date
JP110980A Pending JPS5698754A (en) 1980-01-09 1980-01-09 Setting device for stop position of pickup arm

Country Status (1)

Country Link
JP (1) JPS5698754A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS601682A (en) * 1983-06-20 1985-01-07 Toshiba Corp Head speed control system
EP0131469A2 (en) * 1983-07-12 1985-01-16 Memorex Corporation Disk drive positioning system providing passive head crash protection

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS517798A (en) * 1974-03-12 1976-01-22 Teruaki Fujii Birukasaiji no hinansochi

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS517798A (en) * 1974-03-12 1976-01-22 Teruaki Fujii Birukasaiji no hinansochi

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS601682A (en) * 1983-06-20 1985-01-07 Toshiba Corp Head speed control system
EP0131469A2 (en) * 1983-07-12 1985-01-16 Memorex Corporation Disk drive positioning system providing passive head crash protection

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