DE949294C - Apparatus for magnetic recording and reproduction of television images - Google Patents

Apparatus for magnetic recording and reproduction of television images

Info

Publication number
DE949294C
DE949294C DEL19548A DEL0019548A DE949294C DE 949294 C DE949294 C DE 949294C DE L19548 A DEL19548 A DE L19548A DE L0019548 A DEL0019548 A DE L0019548A DE 949294 C DE949294 C DE 949294C
Authority
DE
Germany
Prior art keywords
drive
roller
reproduction
magnetic recording
heads
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
DEL19548A
Other languages
German (de)
Inventor
Dipl-Ing Rudolf Goetze
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.)
Telefunken AG
Original Assignee
Telefunken AG
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 Telefunken AG filed Critical Telefunken AG
Priority to DEL19548A priority Critical patent/DE949294C/en
Application granted granted Critical
Publication of DE949294C publication Critical patent/DE949294C/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
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/008—Recording on, or reproducing or erasing from, magnetic tapes, sheets, e.g. cards, or wires
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/78—Television signal recording using magnetic recording
    • H04N5/782—Television signal recording using magnetic recording on tape

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Recording Or Reproducing By Magnetic Means (AREA)

Description

Im Hauptpatent 927 999 äst eine Vorrichtung zur magnetischen Aufzeichnung .und Wiedergabe von Fernsehbildern unter Verwendung mindestens eines schnell rotierenden Magnetkopfes, der .auf einem demgegenüber langsam laufenden Tonträger eine Spur bestreicht, angegeben, die dadurch gekennzeichnet ist, daß mindestens eine um die Achse einer Walze rotierender Magnetisierungskopf, dessen Spalt in: der Oberfläche der Walze liegt, vorgesehen ist, und ein schräg auf die Walze,auflaufendes diese umschlingendes magnetisches- Band, insbesondere Pulverband, welches an dem Kopf anliegt, als Aufzeichnungsträger,dient.In main patent 927 999 there is a device for magnetic recording . and playback of television images using at least one rapidly rotating Magnetic head, which is a track on a slow-moving sound carrier coated, indicated, which is characterized in that at least one around the Axis of a roller rotating magnetizing head, its gap in: the surface the roller lies, is provided, and an inclined on the roller, accumulating this Wrapping magnetic tape, especially powder bandage, which is attached to the head is present, as a recording medium.

Für eine einwandfreie Aufzeichnung und Wiedergabe ist es erforderlich, daß ein starrer Synchronismus zwisdhen Bandgeschwindigkeit und Kopfgeschwindigkeit vorhanden ist, daß also z. B. ein starres Drehzahlverhältnis zwischen dem Antrieb der das perforierte Band transportierenden Zackenrolle und dem Antrieb der Köpfe vorhanden ist.For proper recording and playback it is necessary to that a rigid synchronism between tape speed and head speed is present, so that z. B. a rigid speed ratio between the drive the tooth roller transporting the perforated tape and the drive mechanism for the heads is available.

Gemäß der Zzs.atzerfindung wird dies dadurch erreicht, daß zum Antrieb der Zackenrolle, welche das Band -transportiert, und zurnAntrieb der Köpfe bzw. der Walze synchron laufende Antriebsmotoren dienen, -deren Antriebsenergie mittelbar vorn gleichen Wechselstromnetz geliefert wird, und @daß der Antrieb der Köpfe bzw. der Walze über einen eine Übersetzung ins Schnelle ermöglichenden Frequenzumformer erfolgt. Die Figur veranschaulicht ein Ausführungsbeispiel des Gegenstandes der Erfindung. Die Zackenrolle Z wird von dem Synchronmotor S, der von dem Wechselstromnetz N .gespeist wind, angetrieben. Das Band ist mit B bezeichnet. Die Walze W ibzw. die Köpfe werden von :dem Synchronmotor T ,angetrieben, der von einem Hilfsnetz höherer Frequenz, z. B. von einer Frequenz von 2ooo Hz, gespeist wird. Die 2ooo Hz werden von dem Generator G erzeugt, der mit dem Motor M gekuppelt ist, der seinerseits vom Wechselstromnetz N die erforderliche Antriebsenergie erhält.According to the Zzs.atzerfindung this is achieved in that the drive the tooth roller, which transports the tape, and to drive the heads or the roller is used by synchronously running drive motors, -whose drive energy is indirect is supplied from the same AC network, and @ that the drive for the heads or of the roller via a frequency converter that enables a translation into high speed he follows. The figure illustrates an embodiment of the subject matter of FIG Invention. The zigzag roller Z is controlled by the synchronous motor S, which is powered by the alternating current network N. Fed wind, driven. The band is labeled B. The roller W ibzw. the heads are driven by: the synchronous motor T, driven by an auxiliary network higher frequency, e.g. B. is fed by a frequency of 2,000 Hz. The 2ooo Hz are generated by the generator G, which is coupled to the motor M, which in turn receives the required drive energy from the alternating current network N.

Da alle Motoren synchron laufen, ist das erforderliche, aibsolut starre Drehzahlverhältnis. zwischen dem Antrieb des Bandes und dem Antrieb -der Köpfe vorhanden.Since all motors run synchronously, the required, absolutely rigid Speed ratio. between the drive of the tape and the drive of the heads.

Claims (1)

PATENTANSPRUCH: Vorrichtung zur .magnetischen Aufzeichnung und Wiedergabe von Fernsehbildern nach Patent 927 999, dadurch gekennzeichnet, -daß zum Antrieb der Zackenrolle, welche das Band transportiert, und zum Antrieb der Köpfe bzw. .der Walze synchron laufende Antriebsmotoren dienen, deren Antriebsenergie mittelbar vom gleichen. Wechselstromnetz geliefert -wird, und daß der Antrieb der Köpfe bzw. der Walze über einen eine Übersetzung ins Schnelle ermöglichenden Frequenzumformer erfolgt.PATENT CLAIM: Device for .magnetic recording and reproduction of television pictures according to patent 927 999, characterized in that the drive the tooth roller, which transports the tape, and to drive the heads or Roller synchronously running drive motors are used, the drive energy of which is indirect of the same. AC mains is supplied, and that the drive for the heads or of the roller via a frequency converter that enables a translation into high speed he follows.
DEL19548A 1954-08-06 1954-08-06 Apparatus for magnetic recording and reproduction of television images Expired DE949294C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEL19548A DE949294C (en) 1954-08-06 1954-08-06 Apparatus for magnetic recording and reproduction of television images

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEL19548A DE949294C (en) 1954-08-06 1954-08-06 Apparatus for magnetic recording and reproduction of television images

Publications (1)

Publication Number Publication Date
DE949294C true DE949294C (en) 1956-09-20

Family

ID=7261443

Family Applications (1)

Application Number Title Priority Date Filing Date
DEL19548A Expired DE949294C (en) 1954-08-06 1954-08-06 Apparatus for magnetic recording and reproduction of television images

Country Status (1)

Country Link
DE (1) DE949294C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1230451B (en) * 1961-11-30 1966-12-15 Loewe Opta Gmbh Device for recording and reproducing high-frequency and audio-frequency vibrations, in particular a mixture of television signals

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1230451B (en) * 1961-11-30 1966-12-15 Loewe Opta Gmbh Device for recording and reproducing high-frequency and audio-frequency vibrations, in particular a mixture of television signals

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