JPS5512586A - Position angle detector for pick up arm - Google Patents

Position angle detector for pick up arm

Info

Publication number
JPS5512586A
JPS5512586A JP8557978A JP8557978A JPS5512586A JP S5512586 A JPS5512586 A JP S5512586A JP 8557978 A JP8557978 A JP 8557978A JP 8557978 A JP8557978 A JP 8557978A JP S5512586 A JPS5512586 A JP S5512586A
Authority
JP
Japan
Prior art keywords
arm
layer
pick
photo
position angle
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
JP8557978A
Other languages
Japanese (ja)
Inventor
Akira Oinuma
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP8557978A priority Critical patent/JPS5512586A/en
Publication of JPS5512586A publication Critical patent/JPS5512586A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
    • G11B19/02—Control of operating function, e.g. switching from recording to reproducing
    • G11B19/14—Control of operating function, e.g. switching from recording to reproducing by sensing movement or position of head, e.g. means moving in correspondence with head movements

Landscapes

  • Length Measuring Devices By Optical Means (AREA)

Abstract

PURPOSE:To detect the position angle of the arm optically with non-contact, by providing the photo electric converter consisting of resistor and photo conductor three layer and the movable light means emitting light locally, and detecting the voltage produced between the two layers of the converter. CONSTITUTION:The beam light source 8 is fitted at one end of the sub-arm 7 fitted to the horizontal rotary axis 6 of the pick up arm 5, and the photo electric converter 11 having the resistor layer 1, photo conductor layer 2 and conductor layer 3 is provided at the position where the spot light from the light source 8 is collected, and the photo conductive layer 2 is constituted that it corresponds to the rotary locus of the spot light of the light source rotated unifiedly with the pick up arm 5. At the both ends of the resistor layer 1 of the converter 11, DC power supply 9 is connected and the DC voltmeter 10 is connected to respective one end of the resistor layer 1 and the conductive layer 3. Thus, the position angle of the pick up arm can optically be detected with non-contact.
JP8557978A 1978-07-12 1978-07-12 Position angle detector for pick up arm Pending JPS5512586A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8557978A JPS5512586A (en) 1978-07-12 1978-07-12 Position angle detector for pick up arm

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8557978A JPS5512586A (en) 1978-07-12 1978-07-12 Position angle detector for pick up arm

Publications (1)

Publication Number Publication Date
JPS5512586A true JPS5512586A (en) 1980-01-29

Family

ID=13862715

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8557978A Pending JPS5512586A (en) 1978-07-12 1978-07-12 Position angle detector for pick up arm

Country Status (1)

Country Link
JP (1) JPS5512586A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6225754A (en) * 1985-07-27 1987-02-03 Konishiroku Photo Ind Co Ltd Silver halide photographic sensitive material
JPS6243643A (en) * 1985-08-21 1987-02-25 Fuji Photo Film Co Ltd Color photographic sensitive material giving image with improved shelf stability
JPS63264748A (en) * 1987-04-22 1988-11-01 Fuji Photo Film Co Ltd Silver halide color photographic sensitive material
JPS63311354A (en) * 1987-06-15 1988-12-20 Fuji Photo Film Co Ltd Silver halide color photographic sensitive material

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6225754A (en) * 1985-07-27 1987-02-03 Konishiroku Photo Ind Co Ltd Silver halide photographic sensitive material
JPS6243643A (en) * 1985-08-21 1987-02-25 Fuji Photo Film Co Ltd Color photographic sensitive material giving image with improved shelf stability
JPS63264748A (en) * 1987-04-22 1988-11-01 Fuji Photo Film Co Ltd Silver halide color photographic sensitive material
JPS63311354A (en) * 1987-06-15 1988-12-20 Fuji Photo Film Co Ltd Silver halide color photographic sensitive material

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