JPS5730144A - Disk motor driving circuit for video disk player - Google Patents

Disk motor driving circuit for video disk player

Info

Publication number
JPS5730144A
JPS5730144A JP10251980A JP10251980A JPS5730144A JP S5730144 A JPS5730144 A JP S5730144A JP 10251980 A JP10251980 A JP 10251980A JP 10251980 A JP10251980 A JP 10251980A JP S5730144 A JPS5730144 A JP S5730144A
Authority
JP
Japan
Prior art keywords
voltage
frequency
pickup
comparator
resistance
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
JP10251980A
Other languages
Japanese (ja)
Inventor
Junichi Ikoma
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 JP10251980A priority Critical patent/JPS5730144A/en
Publication of JPS5730144A publication Critical patent/JPS5730144A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To shorten the setting time of a motor driving circuit by determining voltage for a speed control loop corresponding to the position of a pickup.
CONSTITUTION: The slider of a resistance 4 coupled mechanically with a pickup 3 is connected to the connection point between the resistance 4 and a resistance 5, and a potential at this point is sent as a reference voltage to a control circuit. The reference voltage is compared with a feedback voltage by a comparator 7 and inputted via a servo amplifier 8 to a motor 9, whose output is inputted to a frequency generator 10 and a frequency-voltage converter 11. Its output is added by an adder 12 to the error voltage of a phase control system consisting of a reference frequency voltage phase 15, a comparator 16, a synchronizing signal 13, and a transfer function 14, and the sum is the feedback voltage of the comparator 7. The voltage of the slider, the voltage of a battery 6 or the transfer function of the frequency generator 10 and frequency-voltage converter 11 are adjusted to obtain a desired turning speed without reference to the position of the pickup.
COPYRIGHT: (C)1982,JPO&Japio
JP10251980A 1980-07-28 1980-07-28 Disk motor driving circuit for video disk player Pending JPS5730144A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10251980A JPS5730144A (en) 1980-07-28 1980-07-28 Disk motor driving circuit for video disk player

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10251980A JPS5730144A (en) 1980-07-28 1980-07-28 Disk motor driving circuit for video disk player

Publications (1)

Publication Number Publication Date
JPS5730144A true JPS5730144A (en) 1982-02-18

Family

ID=14329590

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10251980A Pending JPS5730144A (en) 1980-07-28 1980-07-28 Disk motor driving circuit for video disk player

Country Status (1)

Country Link
JP (1) JPS5730144A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6059567A (en) * 1983-09-09 1985-04-05 Sony Corp Spindle servo mechanism having fixed linear velocity
JPS6231068A (en) * 1985-08-02 1987-02-10 Mitsubishi Electric Corp Speed controller for digital signal reproducing device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6059567A (en) * 1983-09-09 1985-04-05 Sony Corp Spindle servo mechanism having fixed linear velocity
JPH0527185B2 (en) * 1983-09-09 1993-04-20 Sony Corp
JPS6231068A (en) * 1985-08-02 1987-02-10 Mitsubishi Electric Corp Speed controller for digital signal reproducing device

Similar Documents

Publication Publication Date Title
JPS5730144A (en) Disk motor driving circuit for video disk player
JPS5570907A (en) Correction system for time axis
JPS57120269A (en) Disk recording and reproducing device
JPS5541582A (en) Speed servo control system
JPS5394911A (en) Magnetic recorder-reproducer
JPS5616968A (en) Speed control system of data converter in data memory unit
JPS5625266A (en) Positioning system for magnetic head
JPS5674702A (en) Automatic estimation control system
JPS5769423A (en) Rotation controller
JPS5750323A (en) Video signal recording and reproducing device
JPS54111070A (en) Phase controlling circuit
JPS5625272A (en) Rotary phase modification system of vtr
JPS57100649A (en) Controller for running speed of magnetic tape
JPS5764804A (en) Digital servo system
JPS5739686A (en) Timing axis error compensator
JPS5740710A (en) Correction device for time axis of audio signal
JPS54137222A (en) Displacement control system for magnetic converter head
JPS5629702A (en) Digital positioning device
JPH0222821Y2 (en)
JPS5573970A (en) Automatic gain control system
JPS5528551A (en) Tone arm device
JPS5611639A (en) Drive unit for tape winding frame
JPS5561200A (en) Audio image positioner
JPS5593536A (en) Video signal recording and reproducing system
JPS5542306A (en) Speed control servo circuit of magnetic disc unit