close

Вход

Забыли?

вход по аккаунту

?

DESCRIPTION JPH03243437

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 JPH03243437
[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an
on-vehicle acoustic device, and more particularly to an on-vehicle acoustic device having a socalled muting circuit. [Background Art] In recent years, automotive audio devices (car audios)
meet the needs for high-end, high-performance users by improving the performance of electronic
parts, improving the accuracy of mechanical parts, improving the performance, etc. In order to be
multifunctional and sophisticated. High performance has been achieved. For example, with the
pursuit of higher sound quality, music reproduction by analog signals using cassette tapes-music
reproduction using digital signals by CD (compact disc) etc. that were on the side can be seen a
lot. In addition, many products with various functions such as loudness and muting have come to
be seen. This muting function is used to instantly reduce the volume of the sound being played
by the button. This muting function, for example, temporarily reduces (attenuates) the volume of
the music being listened loudly to make it easier to hear the charge when paying a toll at an
expressway, or makes a warning sound at a railroad crossing It is convenient for confirmation.
[Problem to be Solved by the Invention] However, in the conventional car audio system, since the
operator has to operate the button (or key) to activate and deactivate the muting function, the
toll booth, When switching, etc., you have to operate a button for muting, and when listening to
music with loud noise while parking, it may cause trouble to others when the door is opened
carelessly. SUMMARY OF THE INVENTION The present invention has been made in view of the
problems of the prior art, and it is an object of the present invention that a driver opens a
window at a toll booth, a level crossing or the like while listening to music with a loud sound. It is
an object of the present invention to provide an on-vehicle acoustic device that performs muting
automatically when the door is inadvertently opened while in the park. [Means for Solving the
Problems] The present invention inputs a source such as an FM, AM receiving circuit or cassette
deck, a CD player, and an audio signal output from the source, and also transmits the audio signal
10-04-2019
1
to the speaker side. And a muting circuit that attenuates the output according to an external
command. The muting circuit is provided with a control unit for controlling the muting circuit,
and the control unit is provided with an auto mute selection means for outputting an auto mute
selection command in response to an external operation, and a door of the vehicle is opened.
Door opening / closing detection means for detecting this, window opening / closing detection
means for detecting this when the window is opened a predetermined amount or more, vehicle
speed for detecting the traveling speed of the vehicle and outputting a detection signal
proportional to the speed It also has detection means.
Then, whether the door is opened by the first determination function in which the control unit
determines whether or not the auto mute is in the selected state based on the presence or
absence of the auto mute selection command, and by the presence or absence of the detection
signal of the door opening / closing detection means Is stopped by the output of the vehicle
speed detection means, and the third judgment function of judging whether the window has been
opened by a predetermined amount or more according to the presence or absence of the
detection signal of the window opening / closing detection means A fourth muting function to
judge whether or not the auto mute is selected, a first muting function to control the muting
circuit to attenuate the audio signal output when the door is opened in the auto mute selected
state, and the auto mute selected state And a second muting function for controlling the muting
circuit to attenuate the audio signal output when the window is opened more than a
predetermined amount. You have me. By this, it is intended to achieve the above-mentioned
purpose. An embodiment of the present invention will be described below with reference to FIGS.
1 and 2. FIG. In the embodiment shown in FIG. 1, a cassette deck 1 as a source and an analog
audio signal recorded on a cassette tape (not shown) reproduced by the cassette deck 1 are
input, and the speaker 5 side of the audio signal is input. The muting circuit 2 for attenuating the
output of the muting circuit according to an external command, and the volume and sound
quality of the audio signal output from the muting circuit 2 when the muting function of the
muting circuit 2 is not working It comprises a volume / sound quality adjustment circuit 3 for
adjustment, and a power amplifier 4 for amplifying the output of the volume / sound quality
adjustment circuit 3 and outputting it to a speaker 5. Further, a control unit 6 for controlling the
muting circuit 2 is provided side by side with the heating circuit 2. The control unit 6 is actually
configured by a microcomputer. Further, the control unit 6 includes an auto mute selection
screen as an auto mute selection means for outputting an auto mute selection command
according to an external operation, and a door opening / closing for detecting a door of a vehicle
not shown. A door open / close detection swin 8 as detection means, a window open / close
detection switch 9 as window open / close detection means for detecting a window having a
predetermined distance or more, detection speed proportional to the speed detected A vehicle
speed sensor lO as vehicle speed detection means for outputting a signal is also provided. Among
them, as the door open / close detection screw 8, one which is interposed between the vehicle
body and the door and which becomes the door "detects when open j and turns on" is used.
10-04-2019
2
In addition, as the window opening / closing detection window 9, one that is installed near the
regulator handle of the door and that detects when the window is opened by, for example, 90
percent, turns "ON". As the vehicle speed sensor 10, one that detects the vehicle speed by using
an input terminal to a speed meter (not shown) is used. Here, the overall operation of this
embodiment will be described. First, when the muting function of the muting circuit 2 is not
working, the analog audio signal reproduced by the cassette 1 bypasses the muting circuit 2 and
the operator (user) prefers the volume / sound quality adjusting circuit 3 The sound volume is
adjusted to the sound quality, the sound is sent to the speaker 5 through the power amplifier 4,
the sound is converted, and the sound is output to the vehicle interior. Next, a control program of
the control section 6 related to the automatic mute, which is a feature of the present
embodiment, will be described along the flowchart of FIG. First, the CPU (not shown) of the
control unit 6 determines whether or not the auto mute is in the selected state based on the
presence or absence of the auto mute selection command from the auto mute selection switch 7
(step 5 IOI) (first determination function). When the auto mute is not selected, there is no need
for muting, so the control operation is ended. On the other hand, when the auto mute is selected,
it is judged whether the door is open or not by the presence or absence of the detection signal
from the door open / close detection swin 8 (S102) (second judgment function). Then, when the
door is opened, the muting circuit 2 is controlled to attenuate the audio signal output (S105)
(first muting function). In this way, the crawling is automatically performed. On the other hand,
when the door is not opened, it is judged from the output of the vehicle speed sensor 10 whether
or not the vehicle is stopped (S103) (fourth judgment function). Then, when the vehicle is not
stopped, that is, when it is traveling, there is no need for muting, so the control operation is
ended. If the window is stopped, it is determined whether the window has a predetermined
amount (for example, 80 percent) or more according to the presence or absence of the detection
signal from the window opening / closing detection switch 9 (S104) (third determination)
function]. Then, when the window does not have a predetermined amount or more, the control
operation is ended since there is no need for muting. On the other hand, when the window is at
least a predetermined amount, the muting circuit 2 is controlled to attenuate the audio signal
output [second muting function]. Thus, muting is performed automatically.
According to this embodiment described above, when the vehicle is stopped at a toll booth or the
like and the window is opened, the audio output from the speaker is automatically muted, which
makes it easier to listen to the fee and also takes time and effort because it is auto muting. Even if
you are listening to music loudly while parking in a parking lot etc., even if the door is opened
inadvertently, the audio output from the speaker will be muted automatically, which will bother
others. There is no fear of missing. Further, since the auto mute selection switch 7 is provided,
the auto mute selection function can be canceled when it is not necessary. In the above-described
embodiment, the case of using Kasenotoke 1 as a source is exemplified, but the present invention
10-04-2019
3
is not limited to this, and FM. Of course, other sources such as an AM radio or a CD player may
be used. (Effects of the Invention) The present invention is configured and functions as described
above. The second judgment function and the first muting function mute the audio output
automatically when the door is opened inadvertently when listening to music with loud noise
while parking etc. There is no risk of losing troubles, and the control unit 1st. Third. If you stop
at the toll plaza, crossings, etc. and open the window by the 4th function and the 2nd muting
function, the voice output from the speaker will be muted automatically, so the charge. It is
possible to provide an excellent on-vehicle acoustic device which is conventionally not found to
be easy to hear an alarm sound and the like, and to take time and effort because it is auto muting.
[0002]
Brief description of the drawings
[0003]
FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention,
and FIG. 2 is a flow chart showing a main control program of the control unit of FIG.
1 · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · ·.
Automatic mute selection switch as an automatic mute selection means, 8 · · · · · · · · · door opening
and closing detection switch as door opening and closing detection means, · · · · · · · · window
opening and closing detection switch as window opening and closing detection means, vehicle
speed detection means As a vehicle speed sensor.
10-04-2019
4
Документ
Категория
Без категории
Просмотров
0
Размер файла
13 Кб
Теги
description, jph03243437
1/--страниц
Пожаловаться на содержимое документа