Apparatus and method for preventing unauthorized dubbing of a re

Details Apparatus and method for preventing unauthorized dubbing of a re Apparatus and method for preventing unauthorized dubbing of a re

1986-12-02

1988-10-04

Canney, Vincent P.

Dynamic magnetic information storage or retrieval

General recording or reproducing

Recording-or erasing-prevention

G11B 1504

Patent

active

047759011

ABSTRACT:
In a reproducing and recording or dubbing system there are provided a reproducing apparatus for reproducing from a first tape recorded composite data which includes pulse code modulated information data mixed with control data having first and second states for indicating that re-recording of the associated information data is to be prevented and permitted, respectively, a recording apparatus for recording on a second tape composite data reproduced from the first tape, a detector for detecting the states of the control data in the composite data reproduced from the first tape, a generator for generating a dubbing protect control signal in response to detection of the first state of the control data, a line for transmitting the reproduced composite data from the reproducing apparatus to the recording apparatus, and a switch interposed in the line for transmitting the reproduced composite data and being operated by the dubbing protect control signal to interrupt the transmission of the reproduced composite data to the recording apparatus and thereby prevent recording or copying of the reproduced composite data on the second tape.

REFERENCES:
Minutes of the 6th General Meeting of the DAT Conference held 7/19/85.

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