JPS5494306A - Track tracking device - Google Patents

Track tracking device

Info

Publication number
JPS5494306A
JPS5494306A JP164378A JP164378A JPS5494306A JP S5494306 A JPS5494306 A JP S5494306A JP 164378 A JP164378 A JP 164378A JP 164378 A JP164378 A JP 164378A JP S5494306 A JPS5494306 A JP S5494306A
Authority
JP
Japan
Prior art keywords
information
transparent plate
information tracks
vibrates
disc
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
JP164378A
Other languages
Japanese (ja)
Other versions
JPS6037983B2 (en
Inventor
Kenjiro Kime
Mitsushige Kondo
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 JP53001643A priority Critical patent/JPS6037983B2/en
Publication of JPS5494306A publication Critical patent/JPS5494306A/en
Publication of JPS6037983B2 publication Critical patent/JPS6037983B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Mechanical Optical Scanning Systems (AREA)
  • Optical Recording Or Reproduction (AREA)

Abstract

PURPOSE: To track information tracks, facilitate vibrating and virtually eliminate the need for adjustment by placing a transparent body having a specified refractive index in the optical path of the optical system for information read-out and vibrating these.
CONSTITUTION: Light reflected to a disc 1 which is rotating in the arrow B direction forms its focus at a photo detector 16 by passing the reverse course, thus the outputs of the photo detector 16 are obtainable according to the information having been recorded in information tracks 2. The transparent plate 23 which is provided in said optical path and has a specified refractive index is vibrated as a piezoelectric crystal 24 is excited by the high frequency output of an oscillator 17. The transparent plate 23 vibrates with the phases of the applied voltage to the piezoelectric crystal 24. On account of diffraction by the transparent plate 23, the read-out bright point 9 of the luminous flux 5 vibrates in the direction of crossing the information tracks 2 over a disc 1 at an amplitude ▵, whereby the track tracking is accomplished.
COPYRIGHT: (C)1979,JPO&Japio
JP53001643A 1978-01-10 1978-01-10 truck tracking device Expired JPS6037983B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP53001643A JPS6037983B2 (en) 1978-01-10 1978-01-10 truck tracking device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP53001643A JPS6037983B2 (en) 1978-01-10 1978-01-10 truck tracking device

Publications (2)

Publication Number Publication Date
JPS5494306A true JPS5494306A (en) 1979-07-26
JPS6037983B2 JPS6037983B2 (en) 1985-08-29

Family

ID=11507194

Family Applications (1)

Application Number Title Priority Date Filing Date
JP53001643A Expired JPS6037983B2 (en) 1978-01-10 1978-01-10 truck tracking device

Country Status (1)

Country Link
JP (1) JPS6037983B2 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4977605A (en) * 1972-11-27 1974-07-26
JPS4994304A (en) * 1973-01-10 1974-09-07
JPS49126305A (en) * 1973-04-03 1974-12-03
JPS52147403A (en) * 1976-06-02 1977-12-07 Mitsubishi Electric Corp Signal generator

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4977605A (en) * 1972-11-27 1974-07-26
JPS4994304A (en) * 1973-01-10 1974-09-07
JPS49126305A (en) * 1973-04-03 1974-12-03
JPS52147403A (en) * 1976-06-02 1977-12-07 Mitsubishi Electric Corp Signal generator

Also Published As

Publication number Publication date
JPS6037983B2 (en) 1985-08-29

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