Recording and reproducing apparatus with limited digital copying
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Oct 15, 1991
Grant Date -
N/A
app pub date -
Feb 8, 1989
filing date -
Feb 10, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A composite digital signal received by a recording and reproducing apparatus includes a digital information signal and a control signal. The control signal represents a number of digital copy generation of the associated information signal. The information signal of the received digital composite signal is recorded into recording medium. The information signal is reproduced from the recording medium. During the reproduction of the information signal, a new control signal is generated which represents a number equal to one plus the number represented by the control signal of the received composite digital signal. The new control signal and the reproduced information signal are combined into a new composite digital signal. The new composite digital signal is outputted. A check is made as to whether or not the number represented by the control signal of the received composite digital signal is equal to a predetermined number. When the number represented by the control signal of the received composite digital signal is equal to the predetermined number, the recording of the information signal of the received composite digital signal is inhibited.
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