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JPH01109898

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DESCRIPTION JPH01109898
[0001]
TECHNICAL FIELD The present invention relates to a position detection apparatus for stereo
wireless remote control using infrared light as a medium. In the prior art stereo, the remote
control device used a wired or wireless remote control to operate the balance of the left and right
speakers while confirming with the user's ear. Problems to be Solved by the Invention However,
in the above-mentioned prior art, the user mainly operates while checking with his / her ear, and
the user takes unnecessary time and effort. The present invention focuses on the above
problems, and provides a system capable of directing a plurality of speakers in the direction of
the user by means of a remote control position detection device using infrared light. Means for
Solving the Problems In order to solve the above problems, the remote control position detection
device for stereo according to the present invention comprises a remote control position
detection signal generation means and a normal signal-earth means comprising a plurality of
instructions in digital code. A remote control having infrared signal generation means for
outputting the signals from the remote control position detection signal generation means and
the normal signal generation means as infrared light, and a remote control position detection
signal reception means for receiving an infrared signal transmitted from the remote control.
Means and normal signal light receiving means, the speaker main body supporting portion and
the main body are connected by a rotating body, the output of the remote control position
detection signal light receiving means is received, and the central axis of the speaker main body
It is to turn. Operation The present invention can configure a remote control system capable of
directing a plurality of speakers in the direction in which the user is present by the above
configuration. Embodiment A stereo remote control position detection apparatus according to an
embodiment of the present invention will be described with reference to the drawings. FIG. 1
shows a remote control position detection apparatus according to an embodiment of the present
invention. In the figure, reference numeral 1 denotes a remote control, and 2 denotes a light
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receiving unit provided with remote control position detection means and normal signal
detection means. A signal from the remote control 1 to the light receiving unit 2 is sent as
infrared light. The remote control position detection function is detected by the incident angle of
infrared light to the light receiving unit 2. FIG. 2 is an internal block diagram of the remote
control 1. The remote control 1 incorporates remote control position detection signal generation
means, normal signal generation means and infrared signal generation means, and the remote
control position detection signal generation means and normal signal generation means generate
signals at different timings, respectively, A signal is sent out via the signal generating means.
FIGS. 3, 4 and 5 are explanatory diagrams showing the directivity of the reception sensitivity of
the light receiving section.
In FIG. 3, 21.22.23 is a light receiving element for remote control position detection, 24 is a light
flare for narrowing the directivity of the light receiving element 21.22.23, and 25 is a light
receiving element for normal signal detection. is there. The light receiving element 21.22.23 is
fixed in its mounting direction by changing its direction, and has a narrow directivity by the
reflector 24, and the optical directivity of each receiving sensitivity is 21 'and 22 in FIG. It looks
like ', 23'. Therefore, the directivity of the infrared light from the remote control can be
determined by the output current level of the light receiving element 21.22.23. The light
receiving element 25 has a wide directivity as shown at 25 'in FIG. 5, and can receive a normal
signal from any direction. Next, the internal circuit configuration of the light receiving unit 2 will
be described with reference to FIG. In the figure, reference numeral 26 denotes a switching
circuit of the remote control position detection signal and the normal signal, 27 denotes an
amplification circuit, 28 denotes a tuning / detection circuit, and 29 denotes a waveform shaping
circuit. When a normal signal is sent from the remote controller 1, the signal from the light
receiving element for normal signal detection is output as a normal signal through the
amplification circuit 27, the tuning / detection circuit 28, and the waveform shaping circuit 29
by the normal signal operation signal. Ru. Next, when the position detection signal is sent from
the remote control 1, the remote control position detection operation signals A, B and C are
sequentially switched, and the signal from the light receiving element 21.22.23 for remote
control position detection corresponding to each. Through an amplification circuit 27 and a
tuning / detection circuit 28 and output as a remote control position signal. According to the
above embodiments, the remote control position detection circuit and the normal reception
circuit are shared except for the respective light receiving elements, but as another embodiment,
the directivity of the light receiving element for remote control position detection is an
appropriate value It is also conceivable to share the respective light receiving elements by
adopting the above. Next, an embodiment of the stereo remote control position detection
apparatus according to the present invention will be described with reference to FIG. The same
figure (-is a side view, (B) is a top view. In the figure, 31.32 denotes a speaker, 34 denotes a
motor, 33 denotes a user, 30 denotes an amplifier for stereo, a tuner, and the like. The light
receiving unit 2 is attached to a stereo amplifier and a tuner unit, and the speaker 31.32 is fixed
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to a base via a motor 34. When the user operates the remote control 1, the light receiving unit 2
detects the direction of the remote control 1, detects the difference in angle with the central axis
of the speaker 31. 32, rotates the motor 34, and The central axis is directed to the remote control
1.
As described above, according to the present invention, by adding the remote control position
detection function to the stereo, the speaker can be oriented in the direction of the user
regardless of where the user is in the room, and the best stereo sound can be enjoyed.
[0002]
Brief description of the drawings
[0003]
FIG. 1 is a view showing the positional relationship between the remote control and the light
receiving portion of the remote control position detection apparatus in the embodiment of the
present invention, FIG. 2 is an internal block diagram of the remote control 1, FIG. 3, FIG. FIG. 6 is
a circuit diagram showing an internal circuit configuration of a light receiving unit, and FIG. 7 is
an implementation diagram of a stereo remote control position detecting device.
1 ...... remote control, 2 ...... light receiving unit, 21.22.23 ...... remote position detecting lightreceiving element, 24 ...... reflector, 25 ... ... Light receiving element for normal signal detection,
21 ', 22', 23 '..... Optical directivity characteristic of the light receiving element 21.22.23, 25'-.....
Optical pointing of the light receiving element 25 Characteristics, 26 · · · · · · · · · · · · · · · · · · · · · · · · · ·
· · · · · · · · · · · · · · · · · · · · · amplification circuit, 28 · · · · · · · · · · · · · · · · · · · · · · Shaper circuit, 3 ° · · · · ·
· · · · · · · · · stereo amplifier, 31 · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · ·
························································································
· · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · . Name of Agent Attorney Nakao Toshio
Other 1 person Figure 3 Figure 5 Figure 7
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