JPS554770A - Linear tracking player device - Google Patents

Linear tracking player device

Info

Publication number
JPS554770A
JPS554770A JP7829878A JP7829878A JPS554770A JP S554770 A JPS554770 A JP S554770A JP 7829878 A JP7829878 A JP 7829878A JP 7829878 A JP7829878 A JP 7829878A JP S554770 A JPS554770 A JP S554770A
Authority
JP
Japan
Prior art keywords
pulse motor
tracking angle
horizontal tracking
pulse
negative
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
JP7829878A
Other languages
Japanese (ja)
Other versions
JPS611819B2 (en
Inventor
Satoru Yamamoto
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP7829878A priority Critical patent/JPS554770A/en
Publication of JPS554770A publication Critical patent/JPS554770A/en
Publication of JPS611819B2 publication Critical patent/JPS611819B2/ja
Granted legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE: To make the correction of a minute horizontal tracking angle, a large speed ratio, and a high-positional precision stop possible by using a pulse motor as a driving source.
CONSTITUTION: When tone arm 6 is rotated horizontally to generate a negative horizontal tracking angle, slit 13 is rotated while uniting with rotation axis 8, and a difference proportional to the horizontal tracking angle is generated between outputs of a pair of photo detectors 15a and 15b. This output difference is taken out as a negative voltage by differential amplifier 19. When this negative voltage becomes lower than the negative threshold voltage set by resistance 32a, the output of comparator 31a becomes high-level, and as a result, a prescribed output pulse is generated in pulse motor driving circuit 38, and pulse motor 30 is rotaed to move moving stand 16 in the inside direction of recording medium 1. Consequently, a minute horizontal tracking angle corresponding to one step of pulse motor 1 can be corrected surely, and a large speed ratio can be obtained only by changing the pulse frequency.
COPYRIGHT: (C)1980,JPO&Japio
JP7829878A 1978-06-28 1978-06-28 Linear tracking player device Granted JPS554770A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7829878A JPS554770A (en) 1978-06-28 1978-06-28 Linear tracking player device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7829878A JPS554770A (en) 1978-06-28 1978-06-28 Linear tracking player device

Publications (2)

Publication Number Publication Date
JPS554770A true JPS554770A (en) 1980-01-14
JPS611819B2 JPS611819B2 (en) 1986-01-20

Family

ID=13658014

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7829878A Granted JPS554770A (en) 1978-06-28 1978-06-28 Linear tracking player device

Country Status (1)

Country Link
JP (1) JPS554770A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57172570A (en) * 1981-04-16 1982-10-23 Sharp Corp Record player
JPS57191878A (en) * 1981-05-20 1982-11-25 Trio Kenwood Corp Linear tracking type record player
JPS58115656A (en) * 1981-12-28 1983-07-09 Fujitsu Ltd Optical disk device
JPS5940356A (en) * 1982-08-30 1984-03-06 Matsushita Electric Ind Co Ltd Pickup shift device
JPS5992477A (en) * 1982-11-18 1984-05-28 Matsushita Electric Ind Co Ltd Signal reproducer
EP0188380A2 (en) * 1985-01-18 1986-07-23 Minnesota Mining And Manufacturing Company Protective coating for phototools

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57172570A (en) * 1981-04-16 1982-10-23 Sharp Corp Record player
JPS57191878A (en) * 1981-05-20 1982-11-25 Trio Kenwood Corp Linear tracking type record player
JPS58115656A (en) * 1981-12-28 1983-07-09 Fujitsu Ltd Optical disk device
JPS5940356A (en) * 1982-08-30 1984-03-06 Matsushita Electric Ind Co Ltd Pickup shift device
JPS5992477A (en) * 1982-11-18 1984-05-28 Matsushita Electric Ind Co Ltd Signal reproducer
EP0188380A2 (en) * 1985-01-18 1986-07-23 Minnesota Mining And Manufacturing Company Protective coating for phototools

Also Published As

Publication number Publication date
JPS611819B2 (en) 1986-01-20

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