DE2349678C2 - Method and device for suppressing interference signals - Google Patents
Method and device for suppressing interference signalsInfo
- Publication number
- DE2349678C2 DE2349678C2 DE19732349678 DE2349678A DE2349678C2 DE 2349678 C2 DE2349678 C2 DE 2349678C2 DE 19732349678 DE19732349678 DE 19732349678 DE 2349678 A DE2349678 A DE 2349678A DE 2349678 C2 DE2349678 C2 DE 2349678C2
- Authority
- DE
- Germany
- Prior art keywords
- signals
- scanning
- useful
- useful signals
- sampled
- 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
- 238000000034 method Methods 0.000 title claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 2
- 230000002452 interceptive effect Effects 0.000 claims description 2
- 238000005070 sampling Methods 0.000 claims 3
- 239000000969 carrier Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
Classifications
-
- 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
- G11B3/04—Multiple, convertible, or alternative transducing arrangements
-
- 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
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G5/00—Tone control or bandwidth control in amplifiers
- H03G5/16—Automatic control
Landscapes
- Holding Or Fastening Of Disk On Rotational Shaft (AREA)
- Moving Of Heads (AREA)
Description
3535
Die Erfindung betrifft ein Verfahren zur Unterdrückung von Störsignalen, die beim Abtasten von mechanisch aufgezeichneten Nutzsignalen mittels einer entsprechenden Abtasteinrichtung infolge von durch Erschütterungen des Informationsträgers verursachter Relativbewegungen zwischen dem Abtast-Stift dieser Abtasteinrichtung und dem sie abzutastenden Nutzsignale tragenden Informationsträger entstehen und den Nutzsignalen überlagert sind.The invention relates to a method of suppression of interfering signals when scanning mechanically recorded useful signals by means of a corresponding scanning device as a result of caused by vibrations of the information carrier Relative movements between the scanning pen of this scanning device and the one to be scanned Information carriers carrying useful signals arise and are superimposed on the useful signals.
Es ist z. B. bei Schallplattenwiedergabegeräten, bei welchen die Kraftübertragung vom Laufwerk ium Plattenteller über ein Reibrad erfolgt, bereits bekannt, zur Unterdrückung solcher Störsignale, die (als Folge unzulässiger Relativbewegungen zwischen Laufwerk und Abtastnadel des Tonabnehmers entstehen (Rumpeln), Filterkreiise zu verwenden, die das In Frage kommende Frequerizspektrum unterdrücken.It is Z. B. in record players in which the power transmission from the drive ium turntable is done via a friction wheel, already known to suppress such interference signals that (as a result of impermissible relative movements between Drive and stylus of the pickup arise (rumble), using filter circles that Suppress the relevant frequency spectrum.
uas erfindungsgemäße Verfahren wird bei einem Schallplattenwiedergabegerät zweckmäßig dadurch verwirklicht, daß auf der Unterseite des Plattentellers eine Schallplatte mit unmodulierten Rillen (Leerrillennlatte) vorgesehen ist und daß zur Abtastung dieser unmodulierten Rillen eine zusätzliche, aus Tonarm, Tonabnehmer und Abtastnadel bestehende Abtasteinrichtung vorgesehen ist.uas method according to the invention is thereby expedient in a record player realizes that on the underside of the turntable a record with unmodulated grooves (empty grooved staff) is provided and that an additional one for scanning these unmodulated grooves Tonearm, cartridge and stylus existing scanning device is provided.
Die Erfindung wird an Hand des gezeichneten Ausführungsbeispiels erläutert.The invention is explained with reference to the illustrated embodiment.
In der Figur ist mit 1 das Chassis eines Schallplattenwiedcrgabegerätes bezeichnet. 2 ist der mittels der Welle 3 drehbar gelagerte Plattenteller, welcher mittels des Motors 4 über die Abtriebswelle 5, die Stufenscheibe 6 und das am Plattentellerrand 7 bzw. an einem weiter innen vorgesehenen Reibrand Ta angreifende Reibrad 8 angetrieben wird.In the figure, 1 denotes the chassis of a record player. 2 is the turntable mounted rotatably by means of the shaft 3, which is driven by means of the motor 4 via the output shaft 5, the stepped pulley 6 and the friction wheel 8 acting on the turntable edge 7 or a friction rim Ta provided further inside.
Die modulierten Rillen der auf dem Plattenteller 2 liegenden Schallplatte 9 werden mittels der Abtasteinrichtung 20, bestehend aus der Abtastnadel 10. dem Tonkopf 11 und dem Tonarm 12 abgetastet. Diese abgetasteten Signalspannungen werden über die beiden Leitungen L1 und R1 dem Zweikanal-Verstärker 13 zugeführt. Mit 14 ist die auf der Unterseite des Plattentellers 2 vorgesehene Leerrillenplatte bezeichnet, die mittels einer weiteren Abtasteinrichtung 15, bestehend aus der Abtastnadel 16? dem Tonkopf 17 und dem Tonarm 18 abgetastet wird. Die von dem dort abgetasteten Rumpeln abgeleiteten Signalspannungen werden über die Leitungen L2 und R. dem Zweikanai-Verstärker 19 zugeführt. Die Ausgangsleitungen LA1, LA2 und RA1, RA, der beiden Verstärker 13 und 19 sind miteinander verbunden und werden als gemeinsame Leitungen L und R den (nicht dargestellten) Lautsprechern zugeführt.The modulated grooves of the record 9 lying on the turntable 2 are scanned by means of the scanning device 20, consisting of the scanning needle 10, the sound head 11 and the tonearm 12. These sampled signal voltages are fed to the two-channel amplifier 13 via the two lines L 1 and R 1. The empty grooved plate provided on the underside of the turntable 2 is designated by 14, which by means of a further scanning device 15, consisting of the scanning needle 16 ? the sound head 17 and the tonearm 18 is scanned. The signal voltages derived from the rumble sensed there are fed to the two-channel amplifier 19 via the lines L 2 and R. The output lines LA 1 , LA 2 and RA 1 , RA of the two amplifiers 13 and 19 are connected to one another and are fed as common lines L and R to the loudspeakers (not shown).
Durch die beschriebene Anordnung, die das erfiiidungsgemäße Verfahren verwirklicht, werden die Rumpelstörungen wenigstens weitgehend kompensiert, und zwar ohne Verlust von Nutzsignalen.Through the arrangement described, which the inventive If the procedure is implemented, the rumble disturbances are at least largely compensated, and without loss of useful signals.
Hierzu 1 Blatt Zeichnungen1 sheet of drawings
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19732349678 DE2349678C2 (en) | 1973-10-03 | 1973-10-03 | Method and device for suppressing interference signals |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19732349678 DE2349678C2 (en) | 1973-10-03 | 1973-10-03 | Method and device for suppressing interference signals |
Publications (2)
Publication Number | Publication Date |
---|---|
DE2349678B1 DE2349678B1 (en) | 1974-05-16 |
DE2349678C2 true DE2349678C2 (en) | 1975-01-09 |
Family
ID=5894427
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19732349678 Expired DE2349678C2 (en) | 1973-10-03 | 1973-10-03 | Method and device for suppressing interference signals |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE2349678C2 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES475897A1 (en) * | 1977-12-12 | 1979-12-01 | Dolby Ray Milton | Disc reproducing system for compensating mechanical imperfections |
-
1973
- 1973-10-03 DE DE19732349678 patent/DE2349678C2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE2349678B1 (en) | 1974-05-16 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE2452020C3 (en) | Control arrangement for positioning a magnetic head on a target track | |
DE2853590C2 (en) | ||
DE69220988T2 (en) | Device and method for setting the typing power of a laser | |
DE262690T1 (en) | POSITIONING CONTROL METHOD WITH BOTH CONTINUOUS AND ALSO ADDED INFORMATION FOR A MAGNETIC DISK STORAGE. | |
DE1562038B2 (en) | SYSTEM FOR RECORDING AND SCANNING IMAGE SIGNALS AND IMPULSES CORRESPONDING TO THE INTERFACE FREQUENCY, USING A DISC-SHAPED RECORDING MEDIUM | |
DE136785T1 (en) | DEVICE FOR POSITIONING ROTATING HEADS RELATIVE TO A RECORDER. | |
DE2349678C2 (en) | Method and device for suppressing interference signals | |
DE2364771C2 (en) | Record player | |
DE3943218C2 (en) | ||
DE69431223T2 (en) | Apparatus and method for sound transmission | |
DE3006621C2 (en) | Arrangement for recording information signals on a rotating recording medium | |
DE1412717B1 (en) | Magnetic tape recorder | |
DE3843621C2 (en) | ||
DE2911927C2 (en) | Automatically switchable SECAM comb filter | |
DE2156305B1 (en) | Device for recording and / or reproducing a television signal, in particular for an optical disc | |
DE3136006C2 (en) | Device for controlling the advance of a pick-up transducer in a playback device for rotatable recording media | |
DE2547431C3 (en) | Device for recording or playing back a video signal | |
DE1949535B2 (en) | ARRANGEMENT FOR READING STORED INFORMATION BY A BEAM OF LIGHT | |
DE2407748C2 (en) | Arrangement for a video magnetic tape recorder | |
DE1154505B (en) | Device for magnetic recording of images | |
DE2658944A1 (en) | PROCEDURE AND CIRCUIT ARRANGEMENT FOR FREQUENCY RESPONSE CORRECTION | |
DE3644641A1 (en) | RECORDING AND PLAYBACK DEVICE | |
DE2725433A1 (en) | Signal recording system with supplementary control signal - combines two analogue signals to obtain space for control signal | |
DE3844119C2 (en) | ||
DE3203095C2 (en) | Circuit arrangement for controlling the radial advance of a signal pick-up device in a device for reproducing the information stored on a rotating recording medium |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
E77 | Valid patent as to the heymanns-index 1977 | ||
EHJ | Ceased/non-payment of the annual fee |