JPS63318898A - Remote controller position detector - Google Patents

Abstract

PURPOSE:To constitute a remote control system small in size and compact in volume by constituting the respective photodetector parts of a remote controller position detecting signal photodetecting means and an ordinary signaling means in common. CONSTITUTION:While an ordinary signal is transmitted from a remote controller, a remote controller position signal-ordinary signal switch signal D is made to be L, and photodetector switching signals A-C are made to be H. A summed signal from photodetectors 21-23 is outputted as the ordinary signal through an amplification circuit 28, a tuning.detection circuit 29 and a waveform shaping circuit 30. While a position detecting signal is transmitted from the remote controller, the remote controller position signal-ordinary signal switch signal is made to be H, and the photodetector switching signals A-C are successively switched to H. Correspondingly to this switching, the signal from the photodetectors 21-23 is outputted as the remote controller position signal through the amplification circuit 26 and the tuning.detection circuit 27.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a position detection device for a wireless remote control using infrared light as a medium.

Conventional technology As a position detection device for a remote control, a position detection signal output from the remote control via an infrared light emitting diode with a wide directional output is received by multiple light receiving elements with narrow directional characteristics arranged in different directions. However, a method has been devised that compares the intensity of each received light output and detects the position and direction of the remote control.

Problems to be Solved by the Invention However, in the above-mentioned prior art, the position detection function of the remote control is only considered as an independent function. The light-receiving means was considered completely separately.

The present invention focuses on the above-mentioned problem, and provides a remote control position detection device that is configured with a small number of light receiving means, and that these light receiving means have both the functions of remote control position detection and normal signal reception, and operate effectively. It is.

Means for Solving the Problems In order to solve the above problems, the remote control position detection device of the present invention includes a remote control position detection signal generating means, a normal signal generating means comprising a plurality of commands as digital codes, and a remote control position detection signal generating means. a remote control having an infrared signal generating means for outputting signals from the detection signal generating means and the normal signal generating means as infrared light; and a remote control having an infrared signal generating means for outputting signals from the detection signal generating means and the normal signal generating means as infrared light; The remote control position detection signal light receiving means and the normal signal light receiving means are provided, and the respective light receiving element portions of the remote control position detection signal light receiving means and the normal signal light receiving means have a common structure.

Operation According to the present invention, by using the light receiving element portions of the remote control position detection signal light receiving means and the normal signal light receiving means in common, it is possible to construct a remote control system with a small size and compact volume.

Embodiment Hereinafter, a remote control position detection device according to an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a shape diagram of a remote control position detection device in an embodiment of the present invention. In FIG. 1, 1 is a remote control, and 2 is a light receiving section provided with remote control position detection means and normal signal detection means. A signal from the remote control 1 to the light receiving section 2 is sent in the form of infrared light. Further, the remote control position detection function is detected based on the angle of incidence of infrared light on the light receiving section 2.

FIG. 2 is an internal block diagram of the remote control 1.

The remote control 1 has a built-in remote control position detection signal generation means, a normal signal generation means, and an infrared signal generation means, and the remote control position detection signal generation means and the normal signal generation means each generate signals at different timings. A signal is sent out via the signal generating means.

FIG. 3, FIG. 4, and FIG. 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 and normal signal detection;
Reference numeral 4 denotes a reflector for narrowing the directivity of the light receiving elements 21, 22 and 23. Light receiving elements 21, 22, 23
are fixed in different directions and have narrow directivity due to the reflector 24, and the optical directivity of each receiving sensitivity is 21' in FIG. 4.

22' and 23'. Therefore, the directionality of infrared light from the remote controller can be determined based on the output current level of the light receiving elements 21, 22, and 23. In addition, the receiving sensitivity of the light receiving elements 21, 22, and 23 is determined by adding the respective outputs.
It has wide directivity, so it can receive normal signals from any direction.

Next, the internal circuit configuration of the light receiving section 2 will be explained with reference to FIGS. 6 and 7. In FIG. 6, 25 is a switching circuit for a remote control position detection signal and a normal signal, 26.28 is an amplifier circuit, 27.29 is a tuning/detection circuit, and 30 is a waveform shaping circuit. Further, the amplifier circuit 26 and the tuning/detection circuit 27 constitute a circuit section for a remote control position detection signal.
8. The tuning/detection circuit 29 and the waveform shaping circuit 30 constitute a circuit section for normal signals. When a normal signal is being sent from the remote control 1, the remote control position signal-normal signal switching signal O is set to "L", and the light receiving element switching signals A, El,
By setting C to "'H", the light receiving elements 21, 22 .
The added signal from 23 is outputted as a normal signal through an amplifier circuit 28, a tuning/detection circuit 29, and a waveform shaping circuit 3o. Next, when the position detection signal is being sent from remote control 1, the remote control position signal - normal signal switching signal is
By sequentially switching the light-receiving element switching signals A, B, and C to "H", the signals from the remote control position detection light-receiving elements 21, 22, and 23 are output to the amplifier circuit 26 and the tuning signal respectively. - Passes through the detection circuit 27 and is output as a remote control position signal.

The remote control position detection circuit and the normal reception circuit are designed according to the required characteristics of each. For example, the gain of the amplifier circuit is usually set higher for the receiver circuit due to the necessity of waveform shaping, and the detection time constant of the detector circuit for the remote control position detection circuit is set larger for noise removal.

Effects of the Invention As described above, the present invention enables a remote control system to be configured in a small and compact volume by making the light receiving element portions of the remote control position detection signal light receiving means and the normal signal light receiving means common. It has great effects.

[Brief explanation of the drawing]

Fig. 1 is a shape diagram of a remote control position detection device according to an embodiment of the present invention, and Fig. 2 is a diagram showing the positional relationship between the remote control and the light receiving section.
The figure is an internal block diagram of the same remote control, Figures 3, 4, and 5 are explanatory diagrams showing the directivity of the reception sensitivity of the light receiving section, respectively, Figure 6 is an internal circuit diagram of the same light receiving section, and Figure 7 6 is a timing diagram of signals of each part in FIG. 6. FIG. 1...Remote control, 2...Light receiving section, 21
, 22゜23... Light receiving element, 24...
Reflector, 21'. 22', 23'... Light receiving element, 21, 22.2
3 optical directivity characteristics, 25...Remote control position detection signal and normal signal switching circuit, 26.28...
Amplifier circuit, 27.29...Tuning/detection circuit, 3
o... Waveform shaping circuit. Name of agent: Patent attorney Toshio Nakao and 1 other person1-
m-remote control? ---Yaku Part 9 Figure 1 Figure 2 Figure 3 Row 5 Figure

Claims (1)

[Claims] A remote control position detection signal generation means, a normal signal generation means comprising a plurality of commands as digital codes, and an infrared signal generation means for outputting 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 light receiving means and a normal signal light receiving means each receiving an infrared signal transmitted from the remote control and each comprising a light receiving element section and a circuit section, the remote control position detection signal light receiving means and the remote control position detection signal light receiving means. A remote control position detection device in which each of the light receiving element portions of the normal signal light receiving means has a common configuration.