Infrared communication system and infrared signal receiving...

Details Infrared communication system and infrared signal receiving... Infrared communication system and infrared signal receiving...

2005-07-13

2008-11-25

Perkey, W. B. (Department: 2862)

Photography

Having wireless remote control circuit

Camera aiming

C348S211200

Reexamination Certificate

active

07457534

ABSTRACT:
An infrared communication system is disclosed, that has a transmitter and a receiver. The transmitter includes a modulator, a first converter, an infrared transmission section. The modulator modulates a first electric signal and generates a second signal as a modulated signal. The first converter converts the second signal into an infrared signal. The infrared transmission section transmits the infrared signal to the receiver. The receiver includes a filter, a second converter, and a demodulator. The filter restrains rays having a spectrum whose peak is present at a predetermined wavelength emitted by a plasma display panel. The second converter converts the infrared signal passed through the filter into a third electric signal. The demodulator demodulates the third electric signal.

REFERENCES:
patent: 5223878 (1993-06-01), Shintani et al.
patent: 6037721 (2000-03-01), Lansing et al.
patent: 2005/0047794 (2005-03-01), Quintanar

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