Nothing Special   »   [go: up one dir, main page]

GB1371197A - Detecting the entry of a gramophone stylus into the run-out groove of a record being played - Google Patents

Detecting the entry of a gramophone stylus into the run-out groove of a record being played

Info

Publication number
GB1371197A
GB1371197A GB3884171A GB3884171A GB1371197A GB 1371197 A GB1371197 A GB 1371197A GB 3884171 A GB3884171 A GB 3884171A GB 3884171 A GB3884171 A GB 3884171A GB 1371197 A GB1371197 A GB 1371197A
Authority
GB
United Kingdom
Prior art keywords
record
out groove
pick
stylus
arm
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.)
Expired
Application number
GB3884171A
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.)
Onkyo Corp
Original Assignee
Onkyo 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 Onkyo Corp filed Critical Onkyo Corp
Publication of GB1371197A publication Critical patent/GB1371197A/en
Expired 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
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B3/00—Recording by mechanical cutting, deforming or pressing, e.g. of grooves or pits; Reproducing by mechanical sensing; Record carriers therefor
    • G11B3/02—Arrangements of heads
    • G11B3/08—Raising, lowering, traversing otherwise than for transducing, arresting, or holding-up heads against record carriers
    • G11B3/085—Raising, lowering, traversing otherwise than for transducing, arresting, or holding-up heads against record carriers using automatic means
    • G11B3/08503—Control of drive of the head
    • G11B3/08506—Control of drive of the head for pivoting pick-up arms
    • G11B3/08512—Control of drive of the head for pivoting pick-up arms using optical detecting means

Landscapes

  • Optical Recording Or Reproduction (AREA)
  • Testing Of Balance (AREA)

Abstract

1371197 Measuring angular velocity photoelectrically ONKYO K K 18 Aug 1971 [20 Aug 1970] 38841/71 Heading G1A [Also in Division G5] In an arrangement for determining when a stylus of a gramophone pick-up arm enters the run out groove of a record, a transparent sector shaped plate 11 is fixedly mounted on the pick up arm shaft and carries a pattern 14 of alternate transparent and opaque stripes which is disposed between a light source 20 provided with a similarly patterned mask 23 and a photo-cell 21. The frequency of the variation in amplitude of the light received by the cell increases as the stylus enters a record run out groove and this increase is detected by an R-C circuit which when its output exceeds a set level triggers a flip-flop which actuates a pick-up arm return apparatus. The sector shaped plate 11 and/or the mask 23 can be opaque with the light transmitting stripes formed by slots cut therein.
GB3884171A 1970-08-20 1971-08-18 Detecting the entry of a gramophone stylus into the run-out groove of a record being played Expired GB1371197A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8316070 1970-08-20

Publications (1)

Publication Number Publication Date
GB1371197A true GB1371197A (en) 1974-10-23

Family

ID=13794482

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3884171A Expired GB1371197A (en) 1970-08-20 1971-08-18 Detecting the entry of a gramophone stylus into the run-out groove of a record being played

Country Status (3)

Country Link
DE (1) DE2141900C3 (en)
GB (1) GB1371197A (en)
NL (1) NL7111427A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2447586A1 (en) * 1979-01-26 1980-08-22 Thomson Brandt Automatic arrest of record player - employs plate on pick=up arm pivot to blank photo-detector circuit
EP0048161A1 (en) * 1980-09-15 1982-03-24 Mattel, Inc. Phonograph
CN103761976A (en) * 2014-02-20 2014-04-30 蒋大龙 Stylus sliding mechanism and player comprising same

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2023881B (en) * 1978-05-23 1982-11-17 Pioneer Electronic Corp Linear-tracking pick-up arm drive assembly
US4230323A (en) * 1978-09-26 1980-10-28 Sharp Kabushiki Kaisha Automatic record player
US4226425A (en) * 1978-09-28 1980-10-07 Sharp Kabushiki Kaisha Nonrecorded section detection in an automatic record

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2447586A1 (en) * 1979-01-26 1980-08-22 Thomson Brandt Automatic arrest of record player - employs plate on pick=up arm pivot to blank photo-detector circuit
EP0048161A1 (en) * 1980-09-15 1982-03-24 Mattel, Inc. Phonograph
CN103761976A (en) * 2014-02-20 2014-04-30 蒋大龙 Stylus sliding mechanism and player comprising same
CN103761976B (en) * 2014-02-20 2016-06-01 蒋大龙 A kind of stylus slip mechanism and comprise the phonograph of described stylus slip mechanism

Also Published As

Publication number Publication date
DE2141900A1 (en) 1972-03-09
NL7111427A (en) 1972-02-22
DE2141900B2 (en) 1978-05-11
DE2141900C3 (en) 1979-01-11

Similar Documents

Publication Publication Date Title
GB1482797A (en) Pulse generators
GB1371197A (en) Detecting the entry of a gramophone stylus into the run-out groove of a record being played
GB1281568A (en) Photoelectric switching arrangement for a record player
JPS56133607A (en) Rotation-angle detector
ATE187558T1 (en) DEVICE FOR OPTICALLY MEASURING THE ROTATIONAL SPEED OF AN OBJECT
JPS5411708A (en) Peak detecting system
GB1065270A (en) Photoelectric scanning of measuring marks
JPS52108801A (en) Size detector for records
EP0226548A3 (en) Method for the in-line measurement of background noise for mti radar with suppression of samples not originating from noise, and digital device embodying said method
GB1331812A (en) Neutron detector
IL38855A0 (en) Circuitry for detecting low amplitude rapid variations in a high amplitude output signal
JPS53130002A (en) Tone arm revolution detector
GB1044950A (en) Improvements in or relating to optical elements for photo-electric sensing devices
JPS52141607A (en) Automatic return of pick-up arm
JPS51150346A (en) Scattering radial bundle reading method
JPS52126207A (en) Magnetic disc rotary direction detector
JPS5263379A (en) Measurement of space filter speeds using coherent light
JPS5251918A (en) Constant revolution detecting circuit for magnetic discs
JPS54157609A (en) Goodness or not alarm device of pcm recording and reproducing system
JPS573233A (en) Detecting method for track on optical disk
EP0311113A3 (en) Device for measuring distance along curve
JPS5273786A (en) Object abnormality detector
JPS55113171A (en) Arm position detector
GB1280908A (en) Areal scanning type photo densitometer
JPS5362503A (en) Rotor's protrusion detector

Legal Events

Date Code Title Description
PS Patent sealed
435 Patent endorsed 'licences of right' on the date specified (sect. 35/1949)
PCNP Patent ceased through non-payment of renewal fee