Television – Basic receiver with additional function – For display of additional information
Reexamination Certificate
2005-06-07
2005-06-07
Hsia, Sherrie (Department: 2614)
Television
Basic receiver with additional function
For display of additional information
C348S568000
Reexamination Certificate
active
06903781
ABSTRACT:
A video signal processing apparatus comprises a sub-screen processing integrated circuit for subjecting a sub-screen video signal to scale-down processing to reduce its display region and output the sub-screen video signal, and a main-screen processing integrated circuit comprising: a switching circuit for receiving a main-screen video signal and the scaled-down sub-screen video signal which is outputted from the sub-screen processing integrated circuit, and selecting the main-screen video signal for a main-screen display region while selecting the sub-screen video signal for a sub-screen display region; an A/D conversion circuit for converting the video signal outputted from the switching circuit into a digital video signal; a digital signal processing circuit for digitally processing the digital video signal outputted from the A/D conversion circuit; and a D/A conversion circuit for converting the digitally-processed video signal into an analog video signal. Therefore, the main-screen video signal and the sub-screen video signal can be combined so that these signals are displayed on a single screen, and the circuit scale of the video signal processing apparatus can be minimized.
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Kageyama Atsuhisa
Shibutani Ryuichi
Tanigawa Satoru
Hsia Sherrie
Parkhurst & Wendel L.L.P.
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