ES475897A1 - Disc reproducing system for compensating mechanical imperfections - Google Patents
Disc reproducing system for compensating mechanical imperfectionsInfo
- Publication number
- ES475897A1 ES475897A1 ES475897A ES475897A ES475897A1 ES 475897 A1 ES475897 A1 ES 475897A1 ES 475897 A ES475897 A ES 475897A ES 475897 A ES475897 A ES 475897A ES 475897 A1 ES475897 A1 ES 475897A1
- Authority
- ES
- Spain
- Prior art keywords
- reference path
- signal
- disc
- stylus
- tracked
- 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
- G11B19/20—Driving; Starting; Stopping; Control thereof
- G11B19/2009—Turntables, hubs and motors for disk drives; Mounting of motors in the drive
-
- 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
- G11B3/10—Arranging, supporting, or driving of heads or of transducers relatively to record carriers
-
- 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
- G11B3/60—Turntables for record carriers
Landscapes
- Moving Of Heads (AREA)
- Optical Recording Or Reproduction (AREA)
- Holding Or Fastening Of Disk On Rotational Shaft (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- Electrophonic Musical Instruments (AREA)
- Moving Of The Head To Find And Align With The Track (AREA)
- Manufacturing Of Magnetic Record Carriers (AREA)
- Supporting Of Heads In Record-Carrier Devices (AREA)
- Reciprocating, Oscillating Or Vibrating Motors (AREA)
- Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
- Indicating And Signalling Devices For Elevators (AREA)
- Interconnected Communication Systems, Intercoms, And Interphones (AREA)
- Telephonic Communication Services (AREA)
- Electrolytic Production Of Metals (AREA)
Abstract
The effects of vertical perturbations of a gramophone disc record surface resulting from e.g. record warp and rumble are reduced by sensing the perturbations and compensating therefor by closed loop or open loop means. Thus a reference path adjacent the groove tracked by the main stylus may be tracked, e.g. by a supplementary stylus riding on the lands of the disc surface or photoelectrically. A reference path signal may then be derived by a reference path sensor 104, and this signal is then applied to a preferably closed loop servo 95, 98, 100, 112, 114, 97 which moves the disc 9 itself up and down to tend to null out the reference path signal. Alternatively the compensation is applied by causing the tone arm to track the reference path by a servo technique or by mechanical coupling within the cartridge or electrically by subtracting the reference path signal from the main stylus signal, or by a combination of such techniques.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US85979977A | 1977-12-12 | 1977-12-12 | |
| US96542378A | 1978-12-01 | 1978-12-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES475897A1 true ES475897A1 (en) | 1979-12-01 |
Family
ID=27127539
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES475897A Expired ES475897A1 (en) | 1977-12-12 | 1978-12-11 | Disc reproducing system for compensating mechanical imperfections |
Country Status (15)
| Country | Link |
|---|---|
| JP (3) | JPH0766483B2 (en) |
| AT (2) | AT370895B (en) |
| AU (1) | AU530071B2 (en) |
| BE (1) | BE872692A (en) |
| CA (2) | CA1147268A (en) |
| CH (1) | CH645744A5 (en) |
| DE (1) | DE2853478A1 (en) |
| DK (6) | DK557378A (en) |
| ES (1) | ES475897A1 (en) |
| FR (1) | FR2411461B1 (en) |
| GB (6) | GB2067341B (en) |
| MY (6) | MY8500410A (en) |
| NL (1) | NL7812032A (en) |
| NO (6) | NO155418C (en) |
| SE (6) | SE441634B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4712208A (en) * | 1977-12-12 | 1987-12-08 | Dolby Ray Milton | Disc reproducing system for compensating mechanical imperfections |
| US4340956A (en) * | 1980-04-10 | 1982-07-20 | Rca Corporation | Minimum tracking force stylus |
| DE3440999A1 (en) * | 1984-11-09 | 1986-05-15 | Deutsche Thomson-Brandt Gmbh, 7730 Villingen-Schwenningen | TURNTABLE WITH MEANS FOR DETECTING RECORDING AND SCANING TRACK ANGLE |
| JPH0520759A (en) * | 1991-04-19 | 1993-01-29 | Sony Corp | Disk driving device |
| JP4788984B2 (en) * | 2000-04-11 | 2011-10-05 | ベスタクス株式会社 | Tonearm and record player |
Family Cites Families (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2488936A (en) * | 1940-12-12 | 1949-11-22 | Rca Corp | Frequency-modulation recording and reproducing and its combination with a radio receiver |
| US2328862A (en) * | 1941-12-24 | 1943-09-07 | Soundscriber Corp | Phonograph record scanning device |
| US2572712A (en) * | 1948-11-06 | 1951-10-23 | Gen Instrument Corp | Dual purpose pickup assembly and relief member therefor |
| DE1109394B (en) * | 1958-03-10 | 1961-06-22 | Emi Ltd | Device for controlling the cutting depth of record grooves as a function of surface unevenness |
| GB908892A (en) * | 1958-03-10 | 1962-10-24 | Emi Ltd | Improvements in or relating to methods and apparatus for recording signals |
| US2955827A (en) * | 1959-08-28 | 1960-10-11 | William T Moore | Guide means for phonograph needle |
| US3228700A (en) * | 1962-12-05 | 1966-01-11 | Rca Corp | Suspension systems for phonograph pickups |
| FR1546954A (en) * | 1966-12-22 | 1968-11-22 | Teldec Telefunken Decca | Method for etching a groove on the surface of a signal recording medium |
| US3830505A (en) * | 1971-11-22 | 1974-08-20 | J Rabinow | Vertical stabilizer for phonograph arms |
| JPS4963323A (en) * | 1972-10-19 | 1974-06-19 | ||
| JPS5116557B2 (en) * | 1972-12-12 | 1976-05-25 | ||
| JPS4991603A (en) * | 1972-12-30 | 1974-09-02 | ||
| JPS524169B2 (en) * | 1973-08-15 | 1977-02-02 | ||
| DE2349678C2 (en) * | 1973-10-03 | 1975-01-09 | Electroacustic Gmbh, 2300 Kiel | Method and device for suppressing interference signals |
| JPS5110906A (en) * | 1974-07-18 | 1976-01-28 | Victor Company Of Japan | KOMITSUDOJOHOKIROKUENBANSAISEISOCHI |
| JPS585829B2 (en) * | 1974-10-21 | 1983-02-01 | 株式会社小松製作所 | Soukishiyariyouno Soukou Souchi |
-
1978
- 1978-12-11 SE SE7812712A patent/SE441634B/en unknown
- 1978-12-11 NO NO78784165A patent/NO155418C/en unknown
- 1978-12-11 FR FR7834763A patent/FR2411461B1/en not_active Expired
- 1978-12-11 CH CH1261078A patent/CH645744A5/en not_active IP Right Cessation
- 1978-12-11 JP JP53154074A patent/JPH0766483B2/en not_active Expired - Lifetime
- 1978-12-11 ES ES475897A patent/ES475897A1/en not_active Expired
- 1978-12-11 DE DE19782853478 patent/DE2853478A1/en not_active Ceased
- 1978-12-11 NL NL7812032A patent/NL7812032A/en unknown
- 1978-12-12 GB GB8100422A patent/GB2067341B/en not_active Expired
- 1978-12-12 AT AT0885178A patent/AT370895B/en not_active IP Right Cessation
- 1978-12-12 CA CA000317805A patent/CA1147268A/en not_active Expired
- 1978-12-12 BE BE192267A patent/BE872692A/en not_active IP Right Cessation
- 1978-12-12 DK DK557378A patent/DK557378A/en not_active Application Discontinuation
- 1978-12-12 GB GB7848108A patent/GB2013957B/en not_active Expired
- 1978-12-12 GB GB8100421A patent/GB2067340B/en not_active Expired
- 1978-12-12 AU AU42432/78A patent/AU530071B2/en not_active Expired
- 1978-12-12 GB GB8100420A patent/GB2067339B/en not_active Expired
- 1978-12-12 GB GB8100418A patent/GB2068627B/en not_active Expired
- 1978-12-12 GB GB8100419A patent/GB2067820B/en not_active Expired
-
1981
- 1981-10-19 AT AT0447181A patent/AT376312B/en not_active IP Right Cessation
-
1983
- 1983-05-30 CA CA000429247A patent/CA1180663A/en not_active Expired
-
1985
- 1985-01-24 SE SE8500332A patent/SE8500332D0/en not_active Application Discontinuation
- 1985-01-24 SE SE8500334A patent/SE8500334L/en not_active Application Discontinuation
- 1985-01-24 SE SE8500331A patent/SE8500331D0/en not_active Application Discontinuation
- 1985-01-24 SE SE8500333A patent/SE8500333L/en not_active Application Discontinuation
- 1985-01-24 SE SE8500330A patent/SE8500330D0/en not_active Application Discontinuation
- 1985-12-30 MY MY410/85A patent/MY8500410A/en unknown
- 1985-12-30 MY MY414/85A patent/MY8500414A/en unknown
- 1985-12-30 MY MY413/85A patent/MY8500413A/en unknown
- 1985-12-30 MY MY412/85A patent/MY8500412A/en unknown
- 1985-12-30 MY MY411/85A patent/MY8500411A/en unknown
- 1985-12-30 MY MY415/85A patent/MY8500415A/en unknown
-
1986
- 1986-05-22 NO NO862029A patent/NO862029L/en unknown
- 1986-05-22 NO NO862027A patent/NO862027L/en unknown
- 1986-05-22 NO NO862026A patent/NO862026L/en unknown
- 1986-05-22 NO NO862028A patent/NO862028L/en unknown
- 1986-05-22 NO NO862030A patent/NO862030L/en unknown
- 1986-07-23 DK DK350886A patent/DK350886A/en not_active Application Discontinuation
- 1986-07-23 DK DK350986A patent/DK350986A/en not_active Application Discontinuation
- 1986-07-23 DK DK351286A patent/DK351286D0/en not_active Application Discontinuation
- 1986-07-23 DK DK351186A patent/DK351186A/en not_active Application Discontinuation
- 1986-07-23 DK DK351086A patent/DK351086A/en not_active Application Discontinuation
-
1994
- 1994-12-21 JP JP6335164A patent/JP2673170B2/en not_active Expired - Lifetime
- 1994-12-21 JP JP6335165A patent/JPH08161701A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FD1A | Patent lapsed |
Effective date: 20010301 |