Communications: electrical – Condition responsive indicating system – Specific condition
Reexamination Certificate
2010-04-14
2010-11-30
La, Anh V (Department: 2612)
Communications: electrical
Condition responsive indicating system
Specific condition
C340S573100, C340S521000, C381S312000
Reexamination Certificate
active
07843337
ABSTRACT:
This hearing aid comprises a microphone (1) for collecting sounds, an A/D converter (2) for converting an analog signal outputted from the microphone (1) into a digital signal, a hearing aid processor (3) for performing hearing aid processing on the digital signal outputted from the A/D converter (2), a D/A converter (4) for converting the signal that has undergone the hearing aid processing into an analog signal, and a receiver (5) for outputting the analog signal outputted from the D/A converter (4) as an acoustic signal to the surroundings. A mixer (6), in which a first input is connected to the output of the hearing aid processor (3) and its own output is connected to the input of the D/A converter (4), is interposed between the hearing aid processor (3) and the D/A converter (4). The output signal of an alert sound shaper (8) that shapes the alert sound signal produced by an alert sound producer (7) is connected to a second input of the mixer (6). The mixer (6) is connected to a controller (9) that produces a mix ratio signal for mixing the output signals of the hearing aid processor (3) and the alert sound shaper (8).
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Maruoka Kazutaka
Ochi Akira
La Anh V
Panasonic Corporation
Wenderoth , Lind & Ponack, L.L.P.
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