Dual mode transmission device

Details Dual mode transmission device Dual mode transmission device

2005-07-26

2005-07-26

Le, Huyen (Department: 2644)

Electrical audio signal processing systems and devices

Headphone circuits

C381S110000, C381S123000, C381S376000, C455S078000, C455S569100

Reexamination Certificate

active

06922473

ABSTRACT:
A dual-mode transmission device is provided for use with a radio device configured for either push-to-talk operation or voice-operated operation. The dual-mode transmission device includes a mode selecting apparatus that may be switched between a first position in which a push-to-talk mode is enabled and a second position in which the push-to-talk mode is disabled, allowing a single headset or similar device to be used in either mode.

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patent: 5715321 (1998-02-01), Andrea et al.
patent: 6272361 (2001-08-01), Courtis et al.
patent: 6608908 (2003-08-01), Galet et al.

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