JPH08102702A - Wireless signal transmission system - Google Patents

Abstract

PURPOSE: To easily detect the direction of a radio transmission device against a reception device based on a fact that the radio signals transmitted from plural radio signal transmission devices have the waveforms different from each other and also show the directivity in the directions different from each other. CONSTITUTION: A radio signal transmission system consists of a radio signal transmission device 1 which transmits a radio signal αhaving its directivity in the horizontal direction, radio signal transmission device 2 which transmits a radio signal β having its directivity in the vertical direction, a headset 3, and a radio signal reception device 4. The headset 3 serves as a placing stand which is attached to both devices 1 and 2. The frequency of both signals αand β are previously set at different levels together with the intensity of both signals set previously at a fixed ratio respectively. The device 4 receives the signals α and β and identifies them. The intensity of these two signals are measured, and the reception intensity ratio is compared with that which is previously set. So that the horizontal and vertical directions of the headset 3 are detected against the device 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wireless signal transmission system having a plurality of wireless signal transmitters and a plurality of wireless signal receivers.

[0002]

2. Description of the Related Art For information processing devices such as computers,
A keyboard, a mouse, a trackball, a tablet, a touch panel, etc. are generally used as a data input device for inputting data interpretable by the information processing device.

In addition, virtual reality
A data glove is known as a data input device in the system.

[0004]

Problems to be Solved by the Invention Keyboard, mouse,
A trackball, a tablet, a touch panel, or a data probe is a data input device that converts the motion of a human hand into predetermined data. In addition, there are many kinds of information that humans can communicate with each other in their daily lives other than the movements of their hands, and information such as voices, facial expressions, and facial and body movements is particularly important.

However, it is not easy to input voices, facial expressions, actions, etc. as data that can be easily interpreted by the information processing apparatus.

With respect to voice, in particular, a very limited word can be recognized by digitizing a voice signal input from a microphone, performing a predetermined conversion, and comparing it with voice data registered in advance. However, the number of words that can be recognized is very small, and the information processing apparatus requires a high level of information processing capability, and thus is not often used.

As for facial expressions, it is possible to digitize a moving image input from a camera and obtain it as moving image data. However, the moving image data is processed in real time by a commonly used information processing device, Is very difficult to interpret.

Regarding the movement of the face or body, 3
Although it is difficult to obtain detailed three-dimensional motion information and interpret it, a simple motion such as shaking the head vertically or horizontally greatly increases the possibility of interpretation. However, at the present time, there are few devices that use these operation information, except for large-scale devices in the virtual reality system.

Therefore, the first object of the present invention is that it can be used as a device for inputting angle information to an information processing device such as a computer, and the angle information is further used as position information (pointing information) on a logical plane. It is to provide a wireless signal transmission system that can be converted into and used.

A second object of the present invention is to provide a radio signal transmission system capable of easily detecting the direction in which the radio signal transmitting device faces the radio signal receiving device.

[0011]

In order to achieve the above object, a radio signal transmission system according to the present invention includes a plurality of radio signal transmission devices for transmitting radio signals having directivity,
A wireless signal receiving device that receives wireless signals transmitted from the plurality of wireless signal transmitting devices, wherein the wireless signals transmitted from the plurality of wireless signal transmitting devices have different frequencies or different waveforms. Together, they both show directivity in different directions,
In addition, the positional relationship between the plurality of wireless signal transmission devices is fixed.

[0012]

By adopting the above configuration of the present invention, it is possible to realize a radio signal transmission system capable of easily detecting the direction in which the radio signal transmission device faces the radio signal reception device.

Thus, it can be used as a device for inputting angle information to an information processing device such as a computer, and further, the angle information is used after being converted into position information (pointing information) on a logical plane. It also becomes possible.

[0014]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows an embodiment of the present invention. In the figure, 1 is a radio signal transmitting apparatus that transmits a radio signal α having directivity in the horizontal direction: 2 is a radio signal transmitting apparatus that transmits a radio signal β that has directivity in the vertical direction: 3 is a headset: 4 is a radio signal receiving device:
Is.

Since the headset 3 serves as a stand attached to the first wireless signal transmitting apparatus 1 and the second wireless signal transmitting apparatus 2, instead of the headset 3, headphones and a head mounted display are provided. , A remote control, or just a stand can be used.

The frequency of the radio signal α and the frequency of the radio signal β are preset to different values. Alternatively,
Instead of using different values for the frequencies, the waveforms of the wireless signal α and the wireless signal β may be different waveforms. Other,
If the characteristics are such that two types of wireless signals can be distinguished,
Any characteristic can be substituted for frequency.

The transmission intensity of the radio signal α and the transmission intensity of the radio signal β are set in advance to values having a constant ratio, as illustrated in FIG.

The radio signal α and the radio signal β are both received by the radio signal receiving device 4.

The radio signal receiving device 4 distinguishes the radio signal α from the radio signal β based on the difference in frequency or waveform.

Further, by measuring the reception intensity of the radio signal α and the reception intensity of the radio signal β and comparing the ratio of the preset transmission intensity with the ratio of the measured reception intensity, the radio signal receiving apparatus The horizontal orientation (angle) and the vertical orientation (angle) of the headset 3 with respect to 4 can be determined.

The angle information in the horizontal direction and the angle information in the vertical direction obtained by the above-mentioned method can be used as pointing information by mapping on the logical plane by the correspondence relationship shown in FIG. 3, for example.

FIG. 4 is a conceptual diagram showing a system configuration when the present invention is used with a computer. As shown in the figure, according to this embodiment, the computer can be operated only by the vertical movement of the face and the voice command.

[0024]

As described above, according to the present invention, a plurality of radio signal transmitters for transmitting radio signals having directivity and a radio signal for receiving radio signals transmitted from the plurality of radio signal transmitters. A radio signal transmitted from the plurality of radio signal transmission devices is provided with a receiving device, and both have different frequencies or different waveforms from each other, and both show directivities in different directions, and the plurality of radio signals. Since the positional relationship between the signal transmitting devices is fixed, the direction in which the wireless signal transmitting device faces the wireless signal receiving device can be easily detected.

That is, a device for inputting angle information to an information processing device such as a computer can be easily realized, and the angle information can be easily converted into position information (pointing information) on a logical plane for use. It becomes feasible.

[Brief description of drawings]

FIG. 1 is a diagram showing an embodiment of the present invention.

FIG. 2 is a diagram exemplifying a transmission intensity of a radio signal α and a transmission intensity of a radio signal β in a horizontal direction and a vertical direction.

FIG. 3 is a diagram illustrating an example of a conversion rule for converting angle information into position information.

FIG. 4 is a conceptual diagram showing a system configuration when an embodiment of the present invention is used with a computer.

[Explanation of symbols]

1 Radio signal transmitting device for transmitting radio signal α having directivity in the horizontal direction 2 Radio signal transmitting device for transmitting radio signal β having directivity in the vertical direction 3 Headset 4 Radio signal receiving device

Claims (1)

[Claims] 1. A plurality of wireless signal transmitters for transmitting wireless signals having directivity, and a wireless signal receiver for receiving wireless signals transmitted from the plurality of wireless signal transmitters. The radio signals transmitted from the signal transmitters have different frequencies or different waveforms from each other, and both show directivity in different directions, and the positional relationship between the plurality of radio signal transmitters is fixed. A radio signal transmission system characterized by being provided.