Optical: systems and elements – Deflection using a moving element – Using a periodically moving element
Patent
1996-06-07
1998-10-06
Bacares, Rafael
Optical: systems and elements
Deflection using a moving element
Using a periodically moving element
359164, 359172, 348 15, 379202, H04J 1402
Patent
active
058186166
ABSTRACT:
In a conference system of the present invention, a terminal modulates a sound signal taken by a micro-phone which is connected to the terminal, a coordinate information signal which is designated using a digitizer, and a video signal. The terminal converts the modulated signals to an optical signal by frequency multiplexing, and send the optical signal to the central device of the system. After the central device receives the optical signal, the device separates and extracts a sound signal, a coordinate signal, and a video signal from the optical signal. Each of these separated signals is sent to a corresponding demodulating circuit to be demodulated, outputted as sound or an image afterwards. Further, the coordinate information signal is processed, for instance, as a command data from a conference attendant.
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Bacares Rafael
Canon Kabushiki Kaisha
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