Apparatus and method for transmitting and receiving multiple...

Details Apparatus and method for transmitting and receiving multiple... Apparatus and method for transmitting and receiving multiple...

2004-10-20

2008-03-18

Hsia, Sherrie (Department: 2622)

Television

Television transmitter circuitry

Modulator

C348S726000

Reexamination Certificate

active

07345715

ABSTRACT:
An apparatus and method for transmitting and receiving multiple signals inclusively in one channel are provided. The apparatus for transmitting multiple signals inclusively includes a single-sideband signal synthesis unit which synthesizes single-sideband signals having predetermined bands to generate an inclusive single-sideband signal which includes the bands of the single-sideband signals; a main modulation unit which modulates an inclusive single-sideband signal with a primary carrier frequency to generate an inclusive double-sideband signal where the primary carrier frequency is the center frequency; a main band pass filter which allows only any one single-sideband signal of an inclusive double-sideband signal to generate an inclusive single-sideband signal where a primary carrier frequency is an edge frequency of the inclusive band; and an inclusive single-sideband signal transmission unit which transmits an inclusive single-sideband signal. By transmitting and receiving multiple signals inclusively in one channel, the apparatus can efficiently process transmission and reception of multiple signals.

REFERENCES:
patent: 5585850 (1996-12-01), Schwaller
patent: 6559898 (2003-05-01), Citta et al.
patent: 6680971 (2004-01-01), Tazebay et al.
patent: 09-261611 (1997-10-01), None
patent: 2001-0063823 (2001-07-01), None
patent: 2003-0027467 (2003-04-01), None
patent: 2003-0046733 (2003-06-01), None

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