JPS5651058A - Arm feed device for video disc player - Google Patents

Arm feed device for video disc player

Info

Publication number
JPS5651058A
JPS5651058A JP12402179A JP12402179A JPS5651058A JP S5651058 A JPS5651058 A JP S5651058A JP 12402179 A JP12402179 A JP 12402179A JP 12402179 A JP12402179 A JP 12402179A JP S5651058 A JPS5651058 A JP S5651058A
Authority
JP
Japan
Prior art keywords
pickup arm
driving
pickup
transistor
stylus
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.)
Granted
Application number
JP12402179A
Other languages
Japanese (ja)
Other versions
JPS6138540B2 (en
Inventor
Katsunobu Takeda
Yukio Fukui
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.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP12402179A priority Critical patent/JPS5651058A/en
Publication of JPS5651058A publication Critical patent/JPS5651058A/en
Publication of JPS6138540B2 publication Critical patent/JPS6138540B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE: To smoothly move the pickup arm, by driving a motor moving the pickup arm with a voltage rising with time.
CONSTITUTION: When the displacement of a pickup stylus 8 increases and the detected output of a coil drive circuit 5 driving it is more than a reference value, the output of a comparator 11 is changed into a differentiation signal through a capacitor C and a resistor R, triggering a monostable multivibrator 22 and a saw-tooth wave generating circuit 23. Thus, a transistor 14 is conducted and the conduction of a transistor 24 is controlled, thereby applying a drive voltage which gradually increases with time to a pickup arm driving motor 15. Accordingly, the pickup arm is smoothly moved to prevent rapid production of movement, allowing to avoid the distortion of playback picture via the stylus 8.
COPYRIGHT: (C)1981,JPO&Japio
JP12402179A 1979-09-28 1979-09-28 Arm feed device for video disc player Granted JPS5651058A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12402179A JPS5651058A (en) 1979-09-28 1979-09-28 Arm feed device for video disc player

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12402179A JPS5651058A (en) 1979-09-28 1979-09-28 Arm feed device for video disc player

Publications (2)

Publication Number Publication Date
JPS5651058A true JPS5651058A (en) 1981-05-08
JPS6138540B2 JPS6138540B2 (en) 1986-08-29

Family

ID=14875060

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12402179A Granted JPS5651058A (en) 1979-09-28 1979-09-28 Arm feed device for video disc player

Country Status (1)

Country Link
JP (1) JPS5651058A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61293752A (en) * 1985-06-21 1986-12-24 Mitsui Seiki Kogyo Kk Work measurement correcting device for numerically controlled machine tool

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61293752A (en) * 1985-06-21 1986-12-24 Mitsui Seiki Kogyo Kk Work measurement correcting device for numerically controlled machine tool

Also Published As

Publication number Publication date
JPS6138540B2 (en) 1986-08-29

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