JP6563967B2 - Wireless viewing system and wireless viewing system control method - Google Patents

Description

  The present invention relates to a wireless viewing system and a method for controlling the wireless viewing system.

  Passenger moving bodies such as airplanes and railways provide movie and music viewing services customized for each passenger seat. In addition, at game halls (pachinko shops, game centers, etc.), theme parks, zoos, museums, etc., services are provided that provide music, voice, information, etc. relating to the respective gaming machines and exhibits. Providing these services in a wired manner increases the number of cables and troublesome connection. For this reason, in many cases, services are provided using radio that does not require a cable. At this time, if a normal Internet protocol is used, various services can be provided, but there is an annoyance of taking a two-way communication procedure every time an operation is performed. Therefore, there is a demand for a system that can receive a customized service with a simple operation. Furthermore, since the services required for each user are different, it is necessary to prevent interference from occurring in signals that provide services.

  For example, Patent Document 1 discloses a technique that meets such a demand. Patent Document 1 describes a technology of a wireless viewing system that transmits audio data by infrared rays from a seat terminal installed on a seat of an aircraft or the like toward headphones worn by a user. Here, by setting the infrared transmission beam to a desired opening angle and an appropriate intensity, it is possible to transmit audio data to the requesting passenger's headphones without interference between the seats. In addition, although patent document 1 can also provide the same service using a radio wave, there exists a description that the device which prevents the interference to the adjacent seat by reflection or a wraparound is needed in this case.

JP 2009-253943 A

  When the technique using the infrared transmission of Patent Document 1 is used, there is a problem that the terminal must be arranged at a place where infrared rays can be received. It is good if the position of the terminal that receives radio is almost fixed like an aircraft, but in other usage scenes, the position where the user holds the terminal is not constant or the user himself is within a certain range. There are many cases that move. In such a case, there arises a problem that the position of the terminal is easily deviated from the irradiation range of the infrared beam, and the service cannot be provided. On the other hand, if radio waves are used for signal transmission, this problem is solved. However, as described in Patent Document 1, when radio waves are used, a device for preventing interference is required separately. However, Patent Document 1 does not describe how to devise.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a wireless viewing system that can provide a service with a simple mechanism without causing interference.

  In order to solve the above problems, the wireless viewing system includes a weak wireless transmission device and a portable weak wireless reception device. The weak wireless transmission device includes a weak wireless signal transmission unit and a channel information transmission unit. The portable weak wireless receiver includes channel information receiving means, weak wireless signal receiving means, and viewing signal generating means. The weak wireless signal transmission means transmits a weak wireless signal that is a source for generating a viewing signal on the receiving side. The channel information receiving means transmits channel information including, for example, a weak wireless transmission frequency and a channel number associated with the frequency. The weak wireless reception means adjusts the reception channel based on the received channel information and receives a weak wireless signal. The viewing signal generating means generates a viewing signal that can be viewed by the user based on the received weak wireless signal.

  The effect of the present invention is to provide a wireless viewing system that can provide a service with a simple mechanism without causing interference.

1 is a block diagram illustrating a wireless viewing system according to a first embodiment. It is a block diagram which shows an example of the radio | wireless viewing-and-listening system of 2nd Embodiment. It is a block diagram which shows another example of the radio | wireless viewing-and-listening system of 2nd Embodiment. It is a block diagram which shows another example of the radio | wireless viewing-and-listening system of 2nd Embodiment. It is a block diagram which shows the radio | wireless viewing-and-listening system of 3rd Embodiment. It is a block diagram which shows the specific example of the radio | wireless viewing-and-listening system of 3rd Embodiment. It is a sequence diagram which shows operation | movement of the radio | wireless viewing-and-listening system of 3rd Embodiment. It is a block diagram which shows the specific example of the weak wireless transmission apparatus of 4th Embodiment. It is a block diagram which shows the specific example of the portable weak wireless receiver of 4th Embodiment. It is a block diagram which shows the specific example of the weak wireless transmission apparatus of 5th Embodiment. It is a block diagram which shows the specific example of the portable weak radio | wireless receiver of 5th Embodiment. It is a schematic diagram which shows an example of the wireless viewing-and-listening system of 5th Embodiment.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. However, the preferred embodiments described below are technically preferable for carrying out the present invention, but the scope of the invention is not limited to the following. In addition, the same number is attached | subjected to the same component of each drawing, and description may be abbreviate | omitted.

(First embodiment)
FIG. 1 is a block diagram showing the wireless viewing system of the present embodiment. The wireless viewing system includes a weak wireless transmission device 100 and a portable weak wireless reception device 200. The weak wireless transmission device 100 includes a weak wireless signal transmission unit 110 and a channel information transmission unit 120. The portable weak radio receiving apparatus 200 includes a channel information receiving unit 210, a weak radio signal receiving unit 220, and a viewing signal generating unit 230.

  The weak wireless signal transmission unit 110 transmits a weak wireless signal that is a source for generating a viewing signal on the receiving side. The weak radio signal transmitting means 110 belongs to the “radio station that emits extremely weak radio waves” defined in Article 4 item 1 of the Radio Law, and “ “Small radio stations” are not included. Such small-scale radio stations include a wireless LAN (Local Area Network) using a 2.4-5.6 GHz band radio wave and Bluetooth (registered trademark). This is because if a plurality of the small-scale radio stations are operated in a limited space, interference is likely to occur. On the other hand, when a radio station that emits extremely weak radio waves is used, interference is unlikely to occur even in the same situation.

  The channel information receiving unit 210 transmits weak wireless channel information transmitted by the weak wireless transmission device 100. The channel information includes, for example, a frequency of a radio wave that transmits weak radio, a channel number assigned to the frequency, and the like. The weak radio signal receiving unit 220 adjusts the reception channel based on the received channel information and receives the weak radio signal. The viewing signal generation unit 230 generates a viewing signal that can be viewed by the user based on the received weak wireless signal.

  With the above-described configuration, the weak wireless range can be viewed according to the present embodiment, without being affected by interference, without being affected by interference.

(Second Embodiment)
FIG. 2 is a block diagram showing a wireless viewing system according to the second embodiment. This embodiment shows a specific example of the channel information transmitting unit 120 and the channel information receiving unit 210 in the configuration of the first embodiment. In the example of FIG. 2, channel information is transmitted by infrared rays. For this purpose, the channel information transmission unit 120 includes an infrared signal transmission unit 121, and the channel information reception unit 210 includes an infrared signal reception unit 211.

  Since infrared rays do not interfere with radio waves, channel information can be transmitted without affecting a weak radio signal for viewing.

  As a transmission wave that does not affect a weak radio signal, for example, there is an ultrasonic wave in addition to infrared rays. FIG. 3 is a block diagram illustrating an example of a wireless viewing system that uses ultrasonic waves for channel information transmission. The channel information transmission unit 120 includes an ultrasonic signal transmission unit 122, and the channel information reception unit 210 includes an ultrasonic signal light reception unit 212. Other configurations are the same as those in the example of FIG. In addition, it is also possible to transmit channel information using visible light without affecting a weak radio signal. However, when using visible light, there is a restriction that the communicable range is limited to the field of view viewed from the weak wireless transmission device 100.

  Error detection can also be performed during transmission and reception of channel information. Error detection can prevent erroneous channel settings. FIG. 4 is a block diagram showing a wireless viewing system having this function. The channel information transmission unit 120 includes an error detection code setting unit 123 that sets an error detection code for channel information. The channel information receiving unit 210 includes an error detection code check unit 213 that checks an error detection code and detects an error.

  As described above, according to the present embodiment, channel information can be transmitted and received without affecting the radio signal to be viewed. Further, the reliability of channel setting can be improved by error detection. As a result, the probability that interference will occur can be reduced.

(Third embodiment)
The channel information for the terminal to set the channel may not be transmitted independently from the weak wireless transmission device 100, but may be transmitted by an external request. FIG. 5 is a block diagram showing a wireless viewing system having this function. The weak wireless transmission device 100 includes channel information request signal receiving means 130. The portable weak radio receiving apparatus 200 includes a channel information request signal transmission unit 240. When channel information request signal transmitting means 240 transmits a channel information request signal, channel information request signal receiving means 130 receives the channel information request signal. In response to this reception, the channel information transmission means 120 starts transmission of channel information. The transmission period can be defined by, for example, the length of time or the number of repetitions.

  FIG. 6 is a block diagram illustrating an example of a wireless viewing system that transmits a channel information request signal with visible light. The channel information request signal transmission unit 240 has a visible light signal transmission unit 241, and the channel information request signal reception unit 130 has a visible light signal reception unit 131. Other configurations are the same as those of the second embodiment shown in FIG.

  Next, the operation of the above example will be described. FIG. 7 is a sequence diagram showing the operation of the wireless viewing system. First, the portable weak radio receiving apparatus 200 transmits a channel information request signal with a visible light signal (S1). When the weak wireless transmission device 100 receives the channel information request signal, it transmits the channel information by infrared rays (S2). As described above, transmission of channel information may be repeated for a predetermined time or a predetermined number of times. Based on the received channel information, the portable weak radio receiving apparatus 200 sets a reception channel so that radio of the channel can be received (S3). The weak wireless transmission device 100 transmits a weak wireless signal by radio wave when transmitting channel information for a predetermined period (S4). Here, there is no problem even if the weak wireless transmission device continuously transmits weak wireless regardless of transmission / reception of channel information, but it is possible to save power by transmitting only when requested. When receiving the weak wireless signal, the portable weak wireless receiving device 200 performs processing such as amplification and noise removal to generate a viewing signal (S5). Note that the portable weak wireless receiving device 200 transmits a channel setting completion notification when the setting of the reception channel is completed, and the weak wireless transmitting device 100 starts transmission of the weak wireless signal when this notification is triggered. Good (S6).

  As described above, according to the present embodiment, the channel information request signal is transmitted using visible light that does not affect the weak radio signal, and the channel information is transmitted using infrared light. Therefore, the three signals interfere with each other. And a state in which weak radio can be viewed can be configured. Contrary to the above description, it is also possible to transmit the channel information request signal by infrared rays and transmit the channel information by visible light. Alternatively, ultrasonic waves may be used for either transmission.

(Fourth embodiment)
In the present embodiment, a specific configuration example of the apparatus will be described. FIG. 8 is a block diagram showing a specific example of the weak wireless transmission device 1000. The weak wireless transmission device 1000 includes an MCU 1100, an FM transmitter 1200, an antenna 1300, a visible light receiving unit 1400, an infrared LED 1500, and an audio mixer 1600. In addition, a microphone input terminal 1610, an external input terminal 1_1620, and an external input terminal 2_1630 are provided.

  An MCU (Micro Controller Unit) 1100 is a microprocessor in which a computer system is integrated into one integrated circuit, and controls the weak wireless transmission apparatus 1000. For this purpose, the MCU 1100 includes a processor, a memory, an input / output circuit, and the like.

  An FM (Frequency Modulation) transmitter 1200 converts a signal input from the audio mixer 1600 into a weak radio signal under the control of the MCU 1100. The converted signal is transmitted from the antenna 1300. The FM transmitter 1200 includes a frequency setting unit 1210, and the transmission frequency is controlled by a channel setting signal transmitted from the MCU 1100. The frequency of the weak radio signal can be set to 76-90 MHz, for example. When a plurality of weak wireless transmission apparatuses 1000 are used in a limited space, interference can be prevented by setting each transmission frequency to be different. The increment of the frequency setting can be set to 0.1 MHz, for example.

  The visible light receiving unit 1400 receives a visible light signal transmitted as a channel information request signal from the portable weak wireless reception device 2000 and converts it into an electrical signal. The MCU 1100 detects the reception of the channel information request signal by this electric signal and performs channel information transmission processing.

  An infrared LED (Light Emitting Diode) 1500 blinks under the control of the MCU 1100 and emits infrared rays through the lens 1510. Channel information is converted into an infrared signal by the blinking of the infrared LED 1500 and transmitted to the portable weak radio receiver 2000.

  The audio mixer 1600 mixes the acoustic signals input from the microphone input terminal 1610, the external input terminal 1_1620, and the external input terminal 2_1630, and outputs the acoustic signal to the FM transmitter 1200. The FM transmitter 1200 converts an acoustic signal into a weak radio signal and transmits it from the antenna 1300. Note that the above-described input signal is merely an example, and an arbitrary input signal can be used as the source of the weak radio signal.

  FIG. 9 is a block diagram illustrating a specific example of the portable weak wireless reception device 2000. The portable weak wireless reception device 2000 includes an MCU 2100, an FM receiver 2200, an antenna 2300, a visible light LED 2400, a lens 2410, and an infrared light receiving unit 2500. It also has a headphone terminal 2600, a push button switch 2700, and a battery 2800 serving as a power source.

  The MCU 2100 is a microprocessor including a processor, a memory, an input / output circuit, and the like, in which a computer system is integrated in one integrated circuit, and controls the portable weak wireless reception device 2000.

  The FM receiver 2200 receives a weak radio signal transmitted from the weak radio transmission apparatus 1000 via the antenna 2300. The channel (frequency) received at this time is set based on the channel information signal received from the infrared light receiving unit 2500. The MCU 2100 transmits a channel setting signal for controlling the reception frequency to the FM receiver 2200 based on the received channel information. The frequency setting unit 2210 held by the FM receiver 2200 sets the reception frequency of the FM receiver 2200 so that the weak radio having the frequency indicated by the channel setting signal can be received.

  The visible light LED 2400 blinks under the control of the MCU 2100, converts the channel information request signal into a visible light signal, and emits it through the lens 2410. As a result, the channel information request signal can be transmitted to the weak wireless transmission apparatus 1000. In this example, the channel information request signal is emitted by pressing the push button switch 2700. The user can transmit a channel information request signal by pointing the lens 2410 toward the weak wireless transmission device 1000 and pressing a push button switch.

  The infrared light receiving unit 2500 receives infrared light transmitted as a channel information signal. The received signal is converted into an electrical signal and output to the MCU 2100. The MCU analyzes channel information from the input signal and adjusts the reception frequency of the FM receiver 2200 so that the frequency transmitted by the weak wireless transmission apparatus 1000 can be received.

  A headphone terminal 2600 is a terminal for connecting headphones. The user can view sound such as music transmitted from the weak wireless transmission device 1000 by connecting headphones here. Note that the output destination of the sound is not limited to this, and may be another output device such as a speaker.

  As described above, according to the present embodiment, a user-friendly wireless viewing system can be constructed. In the above description, the signal to be transmitted is an acoustic signal. However, a signal of another format such as a video signal can be transmitted by the same mechanism.

(Fifth embodiment)
In the fourth embodiment, an example has been described in which a channel information request signal is transmitted with visible light from a portable weak wireless reception device, and the weak wireless transmission device that receives this signal transmits channel information with infrared light. Other schemes are possible. In this embodiment, an example in which ultrasonic waves are used for the above communication will be described.

  FIG. 10 is a block diagram showing the weak wireless transmission device 3000 of this embodiment. The weak wireless transmission device 3000 includes an MCU 3100, an FM transmitter 3200, an antenna 3300, an ultrasonic microphone 3400, an ultrasonic speaker 3500, and an audio mixer 3600. In addition, a microphone input terminal 3610, an external input terminal 1_3620, and an external input terminal 2_3630 are provided.

  The configurations and operations of the MCU 3100, the FM transmitter 3200, the antenna 3300, and the audio mixer 3600 are the same as those in the fourth embodiment. For this reason, detailed description is omitted. The difference from the fourth embodiment is that the channel information request signal is received by ultrasonic waves and the channel information is transmitted by ultrasonic waves.

  The weak wireless transmission device 3000 includes an ultrasonic microphone 3400 that receives a channel information request signal and an ultrasonic speaker 3500 that transmits channel information in order to realize the above-described operation.

  The channel information request signal received by the input-side ultrasonic microphone 3400 is amplified by the input amplifier 3410, unnecessary signals are removed by the band-pass filter 3420, and reach the MCU 3100. For example, the band pass filter 3420 passes only the signal of the frequency A band. The frequency A is set different from the frequency B of the ultrasonic wave that transmits the channel information. Thereby, interference of two signals can be prevented.

  The channel information output from the MCU 3100 is amplified by the output amplifier 3510 and output from the ultrasonic speaker 3500 as an ultrasonic signal. The transmission frequency B at this time is set to be different from the frequency A of the channel information request signal as described above.

  As described above, the weak wireless transmission device 3000 according to the present embodiment transmits channel information using ultrasonic waves having different frequencies in response to the channel information request signal received using ultrasonic waves. Other configurations and operations are the same as those of the weak wireless transmission device 1000 according to the fourth embodiment.

  Next, the portable weak radio receiving apparatus 4000 of this embodiment will be described. The portable weak wireless reception device 4000 includes an MCU 4100, an FM receiver 4200, an antenna 4300, an ultrasonic speaker 4400, and an ultrasonic microphone 4500. In addition, a headphone terminal 4600, a push button switch 4700, and a battery 4800 serving as a power source are provided.

  The configurations and operations of the MCU 4100, the FM receiver 4200, the antenna 4300, the headphone terminal 4600, and the battery 4800 are the same as those in the fourth embodiment. For this reason, detailed description is omitted. The difference from the fourth embodiment is that the channel information request signal is transmitted by ultrasonic waves and the channel information is received by ultrasonic waves.

  The ultrasonic speaker 4400 transmits the channel information request signal output from the MCU 4100 and amplified by the output amplifier 4410 as an ultrasonic signal. The frequency at this time is the frequency A described above. As a result, the channel information request signal can be transmitted to the weak wireless transmission device 3000. In this example, the channel information request signal is transmitted by pressing the push button switch 4700. The user can transmit a channel information request signal by pointing the ultrasonic speaker 4400 toward the weak wireless transmission device 3000 and pressing a push button switch.

  The ultrasonic microphone 4500 receives an ultrasonic signal transmitted as channel information. The received signal is converted into an electric signal, amplified by an input amplifier 4510, a signal having an unnecessary frequency is removed by a band-pass filter 4520, and reaches the MCU 4100. The band pass filter 4520 passes only the signal of the frequency B band. As described above, since the frequency B is different from the frequency A of the channel information request signal, interference between the two signals can be prevented. The MCU 4100 analyzes the channel information from the input signal and adjusts the reception frequency of the FM receiver 4200 so that the weak radio of the frequency transmitted by the weak radio transmission apparatus 3000 can be received.

  As described above, according to the present embodiment, a user-friendly wireless viewing system can be constructed as in the fourth embodiment.

  By selecting the fourth and fifth embodiments as appropriate, for example, optical communication is used in a noisy place, and ultrasonic waves are used in a bright place such as sunlight. A user-friendly viewing system can be constructed by selecting a communication method. In the above description, the signal to be transmitted is an acoustic signal. However, a signal of another format such as a video signal can be transmitted by the same mechanism.

(Sixth embodiment)
When the wireless viewing system described in the first to fifth embodiments is used, it is possible to construct a wireless viewing system in which interference is unlikely to occur. With this feature, these wireless viewing systems are particularly useful when a large number of wireless viewing systems are installed in a limited space. Hereinafter, a specific example will be described.

  FIG. 12 shows an example in which the weak wireless transmission device 1000 according to the fourth embodiment is installed on a game machine 5000 in a game hall (pachinko parlor), and a user 6000 views an acoustic signal with the portable weak wireless reception device 2000. It is a schematic diagram which shows. One weak wireless transmission device 1000 is installed in each gaming machine 5000, and a different channel (frequency) is assigned to each weak wireless transmission device 1000. The channel number can be set to be the same as the unit number, for example.

  The user 6000 points the portable weak wireless reception device 2000 toward the weak wireless transmission device 1000 installed on the game machine 5000, and presses the push button switch 2700. Then, the reception channel can be set by the operation described in the fourth embodiment. That is, simply pointing the portable weak wireless receiving device 2000 to the game machine 5000 and pressing the push button switch 2700 allows the user to view sound without interference. Note that if a frequency is assigned to a combination of a plurality of game machines that are close to each other so that a difference in frequency is large, it is possible to make interference less likely to occur.

  On the other hand, if the same viewing system is constructed with a GHz-band wireless LAN or Bluetooth (registered trademark), there is a risk that interference will occur frequently and the system will not function.

  As described above, according to the present embodiment, when a large number of wireless viewing systems are installed in a limited space, it is possible to efficiently prevent interference and to construct a comfortable wireless viewing system. In the above description, a game hall is used, but the same system can be applied to a game center, a theme park, a zoo, a museum, an aircraft, a train, a bus, and the like.

  The present invention has been described above using the above-described embodiment as an exemplary example. However, the present invention is not limited to the above embodiment. That is, the present invention can apply various modes that can be understood by those skilled in the art within the scope of the present invention.

100, 1000, 3000 Weak wireless transmitter 110 Weak wireless signal transmitter 120 Channel information transmitter 121 Infrared signal transmitter 130 Channel information request signal receiver 131 Visible light signal receiver 200, 2000, 4000 Portable weak wireless receiver 210 Channel information receiving unit 211 Infrared signal receiving unit 220 Weak wireless signal receiving unit 230 Viewing signal generating unit 240 Channel information request signal transmitting unit 241 Visible light signal transmitting unit 1100, 2100 MCU
1200 FM transmitter 1300, 2300 Antenna 1400 Visible light receiver 1500 Infrared LED
1510, 2410 Lens 1600 Audio mixer 2200 FM receiver 2400 Visible light LED
2500 Infrared light receiver 3400, 4500 Ultrasonic microphone 3500, 4400 Ultrasonic speaker 5000 Amusement stand 6000 User

Claims (8)

A weak wireless transmission device that transmits weak wireless;
A portable weak wireless reception device that can be carried by a user who receives the weak wireless;
The weak wireless transmission device is:
Weak wireless signal transmission means for transmitting a weak wireless signal on a channel of a predetermined frequency;
Channel information transmitting means for transmitting channel information relating to the channel;
The portable weak wireless receiver is:
Channel information receiving means for receiving the channel information;
Weak wireless signal receiving means for receiving the weak wireless signal by setting a reception channel based on the channel information;
That having a the viewing signal generating means for the user to generate a view signal viewable on the basis of the weak radio signal received by the receiving channel
A facility with a viewing system having a wireless viewing system,
A plurality of the weak wireless transmission devices are installed in a predetermined space,
Among the plurality of weak wireless transmission devices, the weak wireless transmission device pair having a short distance between the devices is assigned the frequency of the weak wireless device having a large frequency difference within a predetermined range.
A facility with a viewing system. The weak wireless signal receiving means is
The facility with a viewing system according to claim 1, wherein the channel information receiving unit sets the reception channel in response to reception of the channel information. The channel information transmitting means comprises:
The facility with a viewing system according to claim 1 or 2, wherein the channel information is transmitted by a transmission wave that does not affect the weak radio. The facility with a viewing system according to claim 3, wherein the transmission wave is infrared rays or ultrasonic waves. The portable weak wireless receiver is
Channel information request signal transmission means for transmitting a channel information request signal for requesting transmission of the channel information to the weak wireless transmission device ;
The weak wireless transmission device is
Channel information request signal receiving means for receiving the channel information request signal;
The facility with a viewing system according to any one of claims 1 to 4, wherein the channel information is transmitted in response to reception of the channel information request signal. The facility with a viewing system according to claim 5, wherein the channel information request signal is visible light or ultrasonic waves. A weak wireless transmission device that transmits weak wireless;
A portable weak wireless reception device that can be carried by a user who receives the weak wireless;
The weak wireless transmission device is:
Weak wireless signal transmission means for transmitting a weak wireless signal on a channel of a predetermined frequency;
Channel information transmitting means for transmitting channel information relating to the channel;
The portable weak wireless receiver is:
Channel information receiving means for receiving the channel information;
Weak wireless signal receiving means for receiving the weak wireless signal by setting a reception channel based on the channel information;
Viewing signal generation means for generating a viewing signal that can be viewed by the user based on the weak wireless signal received by the reception channel.
Wireless viewing system
A facility for controlling a facility with a viewing system comprising:
A plurality of the weak wireless transmission devices are installed in a predetermined space,
Among the plurality of weak wireless transmitters, the weak wireless transmitter pair having a short distance between the devices is assigned the weak wireless frequency having a large frequency difference within a predetermined range.
A control method for a facility with a viewing system . The portable weak wireless receiver is
Transmitting a channel information request signal for requesting transmission of the channel information to the weak wireless transmission device;
The weak wireless transmission device is
Receiving the channel information request signal;
The channel information is transmitted in response to reception of the channel information request signal.
The method for controlling a facility with a viewing system according to claim 7 .

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