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 playedInfo
- 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
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.
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)
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2921016C2 (en) * | 1978-05-23 | 1985-06-13 | Pioneer Electronic Corp., Tokio/Tokyo | Control device for positioning a scanning arm arranged on a slide |
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 |
-
1971
- 1971-08-18 GB GB3884171A patent/GB1371197A/en not_active Expired
- 1971-08-19 NL NL7111427A patent/NL7111427A/xx not_active Application Discontinuation
- 1971-08-20 DE DE19712141900 patent/DE2141900C3/en not_active Expired
Cited By (4)
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 |
---|---|
NL7111427A (en) | 1972-02-22 |
DE2141900C3 (en) | 1979-01-11 |
DE2141900B2 (en) | 1978-05-11 |
DE2141900A1 (en) | 1972-03-09 |
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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 |