close

Вход

Забыли?

вход по аккаунту

JP2000287289

код для вставкиСкачать
Patent Translate
Powered by EPO and Google
Notice
This translation is machine-generated. It cannot be guaranteed that it is intelligible, accurate,
complete, reliable or fit for specific purposes. Critical decisions, such as commercially relevant or
financial decisions, should not be based on machine-translation output.
DESCRIPTION JP2000287289
[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an
audio output apparatus to which headphones can be connected, and in particular, detects a
switch for adjusting the volume on the left and right headphones and detects that the switch is
pressed on the main unit The present invention relates to an audio signal processing technique
for providing a level detection circuit for controlling audio output.
[0002]
2. Description of the Related Art In a conventional audio output device, as shown in FIG. 2, a
switch or knob 113 for volume control is provided on a main body 1 or a cable.
[0003]
In this case, according to the volume control signal from the switch or the knob 113, the output
volume is adjusted by the volume adjustment unit 11 and output from the amplification unit 12.
[0004]
As described above, in the conventional audio output device, since the switch or knob for
adjusting the volume is provided on the main body side or the cable, the volume adjustment is
performed when adjusting the volume. There is a problem that it is necessary to take out a main
body or a cable provided with a switch or knob for use.
10-05-2019
1
[0005]
Therefore, an object of the present invention is to provide an audio output device capable of
adjusting the volume without removing the main body or the cable.
[0006]
SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the audio
output device of the present invention is incorporated in a main body, a headphone with a cable
connected to one end of the main body, and the headphone A switch for adjusting the volume, a
detection unit for detecting the volume adjustment signal of Volume Up / Volume Down from the
headphone, a volume adjustment unit for adjusting the volume by the volume control signal from
the detection unit, and the volume adjustment An amplification unit that performs amplification
control on the audio signal adjusted by the control unit according to a control signal from the
detection unit, and a storage unit that stores Up / Down information of the volume detected by
the detection unit. The sound volume adjustment signal is superimposed on an audio signal line.
[0007]
DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an audio output apparatus according to
an embodiment of the present invention will be described with reference to the drawings.
[0008]
FIG. 1 is a block diagram (A) of a voice output device according to an embodiment of the present
invention, and a reference voltage fluctuation curve diagram (B).
[0009]
As shown in FIG. 1A, the audio output device according to one embodiment of the present
invention is built in the main body 1, a headphone 2 with a cable connected to one end of the
main body 1, and the headphone 2 The switch 21 for adjusting the volume, the detection unit 13
for detecting the volume adjustment signal (Volume Up / Volume Down) from the headphone 2,
and the adjustment of the volume by the volume control signal from the detection unit 13
Volume control unit 11 for performing the control, amplification unit 12 for performing
amplification control of the audio signal adjusted by the volume control unit 11 by the control
signal from the detection unit 13, and Up / of the sound volume detected by the detection unit
13. A storage unit 14 for storing Down information is mainly characterized in that a volume
adjustment signal is superimposed on two audio signal lines.
[0010]
10-05-2019
2
Next, the operation of the voice output device according to one embodiment of the present
invention will be described with reference to the drawings.
[0011]
The operation of the audio output device according to the embodiment of the present invention
operates the volume adjustment signal (Volume Up / Volume Down signal) superimposed on the
audio signal line by operating the switch 21 built in the headphone 2 at the time of volume
adjustment. Is output to the detection unit 13 inside the main body 1, the detection unit 13
receives the volume adjustment signal from the switch 21 inside the headphone 2, identifies
whether the switch 21 is operated, and adjusts the volume control signal Send to section 11.
[0012]
The detection unit 13 also detects the level of the audio signal from the volume adjustment unit
11, and also outputs a control signal for setting the amplification degree of the signal and the
reference voltage level to the amplification unit 12.
The level of the reference voltage is set low in the signal non-input state and set high each time
the signal level increases, as shown in FIG. 1B, and the volume adjustment unit 11 controls the
volume from the detection unit 13 The sound volume of the signal is adjusted by the signal, and
an audio signal is output to the amplifier 12 and the detector 13.
[0013]
Therefore, the amplification unit 12 sets the amplification degree of the signal and the reference
voltage level according to the control signal from the detection unit 13, performs amplification
processing on the audio signal from the volume adjustment unit 11, and detects the storage unit
14 The volume setting information is received from the unit 13 and stored, and read out when
the switch 21 is operated or when the power is turned on.
[0014]
As described above, according to the audio output apparatus of the present invention, it is
possible to provide an apparatus capable of adjusting the volume by the switch incorporated in
the headphone without taking out the main body or the cable. Can.
10-05-2019
3
1/--страниц
Пожаловаться на содержимое документа