Patent · US Expired

Process and device for copying magnetic tapes containing both program material and control data

US5434715A · kind A · utility

1Cited by

4References

1Claims

0Family size

Assignee

Deutsche Thomson-Brandt GmbH · DE

Inventors

Norbert Eigeldinger · Villingen-Schwenningen, DE
Michael Bildl · Pfohren, DE

Key dates

Filing date	Jul 16, 1993
Grant date	Jul 18, 1995
Priority date	—
Expiry date	Jul 16, 2013

Classification

Technology area (CPC G)Physics
CPC primaryG11B2220/91
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

A method of copying magnetic tapes having a message information track and a control track with supplementary information formatted as a digital word encoded as a plurality of successive data bits. The method includes the steps of playing the tape and reproducing the message track and the control track. The message information is coupled to a second playback/record device for recording. The plurality of successive data bits reproduced from the control track is stored in a digital memory to decode the digital word. The stored digital word is transferred to the second playback/record device and is reencoded as a plurality of successive data bits and recorded in the control track of the second playback/record device.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.