Infrared emitter

Details Infrared emitter Infrared emitter

2005-08-16

2005-08-16

Grier, Laura A. (Department: 2644)

Electrical audio signal processing systems and devices

One-way audio signal program distribution

C381S309000, C381S311000, C381S074000, C381S002000, C381S085000, C381S009000, C381S001000, C455S041100, C455S041200

Reexamination Certificate

active

06931136

ABSTRACT:
An infrared emitter comprises a preamplifier, an infrared RF emitter, an infrared channel controller and a photodiode emitting-medium. With the emitter, by switching between two channels with an infrared channel controller, and by the mode of arrangement of a plurality of infrared emitting diodes and two Darlington amplifying circuits on the parts in a photodiode emitting-medium, crosstalk disturbance during transmitting carrier waves to a wireless earphone is inhibited. The emitter is applied to industries of audio/video playing, car audio/video equipment and hi-fi equipment.

REFERENCES:
patent: 2003/0210796 (2003-11-01), McCarty et al.

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