JPS5693144A - Arm sending device of video disk player - Google Patents

Arm sending device of video disk player

Info

Publication number
JPS5693144A
JPS5693144A JP16836779A JP16836779A JPS5693144A JP S5693144 A JPS5693144 A JP S5693144A JP 16836779 A JP16836779 A JP 16836779A JP 16836779 A JP16836779 A JP 16836779A JP S5693144 A JPS5693144 A JP S5693144A
Authority
JP
Japan
Prior art keywords
arm
degree
displacement
stylus
voltage
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
JP16836779A
Other languages
Japanese (ja)
Other versions
JPS6146902B2 (en
Inventor
Katsunobu Takeda
Kichizaemon Okazaki
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 JP16836779A priority Critical patent/JPS5693144A/en
Publication of JPS5693144A publication Critical patent/JPS5693144A/en
Publication of JPS6146902B2 publication Critical patent/JPS6146902B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Moving Of The Head To Find And Align With The Track (AREA)

Abstract

PURPOSE: To enhance the reliability for the arm sending of a video disk player, by installing the means that detects the degree of displacement of the pickup stylus to the arm and then shifts the arm when the degree of displacement reaches the prescribed value.
CONSTITUTION: The degree of displacement of the pickup stylus 2a to the ram 15 is detected by the resistance 16 and the current flowing to the stylus control coil 9 in the form of a change of voltage. This change of voltage is then applied to the hysteresis comparator 18 after eliminating the high frequency component through the low pass filter 17. The comparator 18 operates to secure a high-level output when the signal sent from the filter 17 exceeds the set voltage 19. Accordingly, the output of the comparator 18 has a high level when the degree of displacement of the stylus 2a exceeds the level set previously. Then the pulse motor driving circuit 10 operates to shift the arm 15.
COPYRIGHT: (C)1981,JPO&Japio
JP16836779A 1979-12-26 1979-12-26 Arm sending device of video disk player Granted JPS5693144A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16836779A JPS5693144A (en) 1979-12-26 1979-12-26 Arm sending device of video disk player

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16836779A JPS5693144A (en) 1979-12-26 1979-12-26 Arm sending device of video disk player

Publications (2)

Publication Number Publication Date
JPS5693144A true JPS5693144A (en) 1981-07-28
JPS6146902B2 JPS6146902B2 (en) 1986-10-16

Family

ID=15866767

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16836779A Granted JPS5693144A (en) 1979-12-26 1979-12-26 Arm sending device of video disk player

Country Status (1)

Country Link
JP (1) JPS5693144A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5823363A (en) * 1981-07-30 1983-02-12 Akai Electric Co Ltd Radial feed servo system in disc player
JPS58114562U (en) * 1982-01-25 1983-08-05 株式会社三協精機製作所 record player
JPS59116972A (en) * 1982-12-23 1984-07-06 Olympus Optical Co Ltd Operation center detecting device of actuator
US4562562A (en) * 1982-03-26 1985-12-31 Matsushita Electric Industrial Co., Ltd. Tracking system for controlling the radial positioning of a transducer on a disc medium
US4614986A (en) * 1983-10-31 1986-09-30 Labudde Edward V Magnetic servo with improved tracking system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5491306A (en) * 1977-12-28 1979-07-19 Victor Co Of Japan Ltd Automatic feed follower of information signal reproducer

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5491306A (en) * 1977-12-28 1979-07-19 Victor Co Of Japan Ltd Automatic feed follower of information signal reproducer

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5823363A (en) * 1981-07-30 1983-02-12 Akai Electric Co Ltd Radial feed servo system in disc player
JPS58114562U (en) * 1982-01-25 1983-08-05 株式会社三協精機製作所 record player
US4562562A (en) * 1982-03-26 1985-12-31 Matsushita Electric Industrial Co., Ltd. Tracking system for controlling the radial positioning of a transducer on a disc medium
JPS59116972A (en) * 1982-12-23 1984-07-06 Olympus Optical Co Ltd Operation center detecting device of actuator
US4614986A (en) * 1983-10-31 1986-09-30 Labudde Edward V Magnetic servo with improved tracking system

Also Published As

Publication number Publication date
JPS6146902B2 (en) 1986-10-16

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