Motion video signal processing for recording or reproducing – Local trick play processing – With randomly accessible medium
Patent
1997-11-12
2000-08-29
Garber, Wendy
Motion video signal processing for recording or reproducing
Local trick play processing
With randomly accessible medium
386 95, 380203, 360 60, H04N 591
Patent
active
061120081
ABSTRACT:
The invention intends to reliably the control of duplicating information signals. In the duplication control method according to the invention, a main information signal containing a duplication control information transformed into a spread spectrum signal to be superimposed and a duplication control information superimposed by a processing different from the spectrum spreading is transmitted. The duplication control information transformed into a spread spectrum signal is extracted from the main information signal by reverse spectrum spreading, and the duplication control information superimposed by the different processing is extracted from the main information signal. Information closest to duplication prohibition is selected as an output duplication control information out of the plural extracted duplication control information. On the basis of the selected output duplication control information, the main information signal is controlled on duplication.
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Ogino Akira
Sugita Takehiro
Usui Takashi
Boccio Vincent F.
Garber Wendy
Maioli Jay H.
Sony Corporation
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