DE923939C - Magnetic sound device with a tape or wire-shaped carrier and a device for stopping the carrier drive - Google Patents

Magnetic sound device with a tape or wire-shaped carrier and a device for stopping the carrier drive

Info

Publication number
DE923939C
DE923939C DESCH415A DESC000415A DE923939C DE 923939 C DE923939 C DE 923939C DE SCH415 A DESCH415 A DE SCH415A DE SC000415 A DESC000415 A DE SC000415A DE 923939 C DE923939 C DE 923939C
Authority
DE
Germany
Prior art keywords
carrier
tape
wire
stopping
drive
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
DESCH415A
Other languages
German (de)
Other versions
DE1616413U (en
Inventor
Rudolf Dr Bauer
Heinrich Dipl-Ing Doelz
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.)
G Schaub Apparatebau GmbH
Original Assignee
G Schaub Apparatebau GmbH
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 G Schaub Apparatebau GmbH filed Critical G Schaub Apparatebau GmbH
Priority to DESCH415A priority Critical patent/DE923939C/en
Application granted granted Critical
Publication of DE923939C publication Critical patent/DE923939C/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
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/19—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier
    • G11B27/22—Means responsive to presence or absence of recorded information signals
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
    • G11B15/02—Control of operating function, e.g. switching from recording to reproducing
    • G11B15/16—Control of operating function, e.g. switching from recording to reproducing by sensing presence, absence or position of record carrier or container
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
    • G11B15/18—Driving; Starting; Stopping; Arrangements for control or regulation thereof
    • G11B15/22—Stopping means

Landscapes

  • Recording Or Reproducing By Magnetic Means (AREA)

Description

Magnettongerät mit einem band- oder drahtförmigen Träger und einer Einrichtung zum Stillsetzen des Trägerantriebs Die Erfindung betrifft ein Magnettongerät mit einem band- oder drahtförmigen Träger für die Schallaufzeichnung und einer Einrichtung zum Stillsetzen des Trägerantriebs, die beim Bruch des Trägers wirksam wird.Magnetic sound device with a tape or wire-shaped carrier and a Device for stopping the carrier drive The invention relates to a magnetic sound device with a tape or wire-shaped carrier for sound recording and a device to stop the carrier drive, which takes effect if the carrier breaks.

Es sind Einrichtungen bekannt, bei denen die diese Vorgänge einleitenden Relais durch das Ausbleiben der auf dem Schallspeicher aufgezeichneten Sprechwechselströme erregt werden. Diese Einrichtungen sind aber nur während der Zeit einer Aufnahme oder Wiedergabe wirksam. Wenn der Schallspeicher im Leerlauf bricht, wirkt die bekannte Einrichtung nicht. Eine andere Einrichtung, die auch bei Rücklauf wirkt und das zugrunde liegende Problem löst, arbeitet in der Weise, daß zwei Kontakte den Schallträger zwischen sich aufnehmen und bei dessen Bruch einen den Antriebsmotor abschaltenden Stromkreis schließen. Das Schleifen der Kontakte auf den Träger ist aber unerwünscht und bedeutet einen erheblichen Nachteil. Außerdem erfordert diese Einrichtung einen besonderen Einbauplatz in der Trägerbahn. Nun ist aber bei magnetischen Schallspeichern gerade im Leerlauf (schneller Rücklauf) die Bruchgefahr besonders groß. Die Erfindung beseitigt nun die erwähnten Nachteile. Sie besteht darin, daß bei einem Magnettongerät mit einem band- oder drahtförmigen Träger für die Schallaufzeichnung und einer Einrichtung zum Stillsetzen des Trägerantriebs, die beim Bruch des Trägers wirksam wird, als das die Abschalteinrichtung für den Antrieb auslösende Ereignis die Änderungen im Sprechstromkreis dienen, die beim Bruch des Trägers durch das Ausbleiben des Rauschpegels oder der bei der Schallaufzeichnung verwendeten Hochfrequenzvormagnetisierung am Hörkopf entstehen.There are known facilities in which these processes initiate Relay due to the absence of the alternating speech currents recorded on the sound memory get excited. These facilities are only available during the recording period or playback effective. If the sound storage breaks while idling, the familiar one works Establishment not. Another device that also works with return and that solves underlying problem, works in such a way that two contacts connect the sound carrier take up between them and when it breaks, a shutdown of the drive motor Close circuit. The grinding of the contacts on the carrier is undesirable and means a significant disadvantage. Also, this setup requires a special installation location in the carrier track. But now it is with magnetic sound storage especially when idling (fast reverse) the risk of breakage is particularly high. the The invention now eliminates the disadvantages mentioned. It consists in the fact that with one Magnetic recorder with a tape or wire-shaped carrier for sound recording and a device for shutting down the carrier drive when the carrier breaks becomes effective than the event that triggered the disconnection device for the drive the changes in the speech circuit that occur when the wearer breaks through the Absence of the noise level or the high frequency bias used in the sound recording arise on the hearing head.

Die Erfindung ist auch in den Fällen anwendbar, wo der Hörkopf beim Rücklauf abgehoben wird, damit dieser durch das Band oder den Draht nicht unnötig abgeschliffen wird. Es kann nämlich das Abheben des Hörkopfes in einem solchen geringen Maße vorgenommen werden, daß die Hochfrequenzaufzeichnung oder der Rauschpegel in ihm noch wirksam bleiben, wobei es auf die Wiedergabe der Schallaufzeichnung nicht ankommt.The invention is also applicable in cases where the hearing head at Return is lifted so that it is not unnecessary through the tape or wire is abraded. Namely, it can take off the ear head in such a small amount Measures can be made that the high frequency recording or the noise level in it still remains effective, whereby it does not affect the playback of the sound recording arrives.

Claims (1)

PATENTANSPRUCH: Magnettongerät mit einem band- oder drahtförmigen Träger für die Schallaufzeichnung und einer Einrichtung zum Stillsetzen des Trägerantriebs, die beim Bruch des Trägers wirksam wird, dadurch gekennzeichnet, daß als das die Abschalteinrichtung für den Antrieb auslösende Ereignis die Änderungen im Sprechstromkreis dienen, die beim Bruch des Trägers durch das Ausbleiben des Rauschpegels oder der bei der Schallaufzeichnung verwendeten Hochfrequenzvormagnetisierung am Hörkopf entstehen. Angezogene Druckschriften: Deutsche Patentschrift Nr. 655 0r7.PATENT CLAIM: Magnetic recorder with a tape or wire-shaped Carrier for sound recording and a device for shutting down the carrier drive, which is effective when the carrier breaks, characterized in that as the Switch-off device for the event triggering the changes in the speech circuit serve when the carrier breaks due to the absence of the noise level or the High-frequency bias on the hearing head used in sound recording develop. Referenced publications: German patent specification No. 655 0r7.
DESCH415A 1949-03-17 1949-03-17 Magnetic sound device with a tape or wire-shaped carrier and a device for stopping the carrier drive Expired DE923939C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DESCH415A DE923939C (en) 1949-03-17 1949-03-17 Magnetic sound device with a tape or wire-shaped carrier and a device for stopping the carrier drive

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DESCH415A DE923939C (en) 1949-03-17 1949-03-17 Magnetic sound device with a tape or wire-shaped carrier and a device for stopping the carrier drive

Publications (1)

Publication Number Publication Date
DE923939C true DE923939C (en) 1955-02-24

Family

ID=7422378

Family Applications (1)

Application Number Title Priority Date Filing Date
DESCH415A Expired DE923939C (en) 1949-03-17 1949-03-17 Magnetic sound device with a tape or wire-shaped carrier and a device for stopping the carrier drive

Country Status (1)

Country Link
DE (1) DE923939C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1028797B (en) * 1957-01-05 1958-04-24 Dipl Holzw Wolfgang Heller Automatic switch-off device for sound carriers after a selectable number of performances

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE655017C (en) * 1938-01-06 Aeg Device for the automatic shutdown of the drive of sound recording devices with tape-shaped recording media

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE655017C (en) * 1938-01-06 Aeg Device for the automatic shutdown of the drive of sound recording devices with tape-shaped recording media

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1028797B (en) * 1957-01-05 1958-04-24 Dipl Holzw Wolfgang Heller Automatic switch-off device for sound carriers after a selectable number of performances

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