Television – Format – Including additional information
Patent
1998-05-27
2000-05-30
Kostak, Victor R.
Television
Format
Including additional information
386 94, 380 5, H04N 708
Patent
active
060696656
ABSTRACT:
Additional information is superimposed consistently while the disturbance of a picture due to excessive superimposition is suppressed. The device superimposes a spectrally spread additional information on a video signal. Inverse spread processing is performed on the video signal, and an SS additional information detection circuit detects whether additional information is superimposed already on the video signal. Based on the detection result performed by the additional information detection circuit, superimposition of the spectrally spread signal supplied from the spectrally spread signal generator on the video signal is controlled. A superimposition control method such as superimposition ON/OFF control, superimposition level control, or spread code string control is performed.
REFERENCES:
patent: 3984624 (1976-10-01), Waggener
patent: 5311323 (1994-05-01), Honda
patent: 5315448 (1994-05-01), Ryan
patent: 5459583 (1995-10-01), Nakata
patent: 5537216 (1996-07-01), Yamashita et al.
patent: 5761302 (1998-06-01), Park
patent: 5778064 (1998-07-01), Kori et al.
patent: 5953417 (1999-09-01), Quan
Ikeda Nozomu
Ogino Akira
Kostak Victor R.
Maioli Jay H.
Sony Corporation
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