Interactive video distribution systems – Operator interface – To facilitate tuning or selection of video signal
Reexamination Certificate
2006-07-18
2006-07-18
Srivastava, Vivek (Department: 2623)
Interactive video distribution systems
Operator interface
To facilitate tuning or selection of video signal
C348S731000, C348S732000
Reexamination Certificate
active
07080393
ABSTRACT:
A receiver includes a CPU. The CPU, when executing preset registration, in step S1first searches for the presence or absence of receivable channels. If there are receivable channels, received data (center frequency, etc.) is registered in step S2. If the received channel is a TV channel, filtering is carried out in step S4to count only the channels existing within a range of ± approximately 200 kHz of a center frequency. If it is a CATV channel, counting is further made in step S5on the channels existing within the range of ± approximately 200 kHz of the center frequency, and a filter process is carried out in order to remove the channels within the range of ± approximately 200 kHz of the center frequency +2 MHz of a CATV UHF-band channel overlapped with a TV channel.
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Morisada Katsuhiro
Sakakibara Shigeto
Funai Electric Co. Ltd.
Greenspan, Esq. Myron
Hossain Farzana E.
Lackenbach & Siegel LLP
Srivastava Vivek
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