JP2006352251A - Communication terminal and communication control system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide technology of preventing passengers from being troubled by placing a limit on the use of communication terminals such as mobile phones depending on regions. <P>SOLUTION: A plurality of transmission apparatuses 4a, 4b are installed in control regions (1), (2) wherein the communication terminals 3a to 3c are controlled, and each of the communication terminals 3a to 3c is provided with a control circuit 308 for receiving control signals from the transmission apparatuses 4a, 4b and controlling the communication of the communication terminals 3a to 3c depending on the strength ratio of the control signals. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a communication terminal device such as a mobile phone that performs voice and data communication with a base station and a communication control system that automatically controls its operation mode.

  Generally, a priority seat and other general passenger seats are provided in a boarding section of a public transportation vehicle. Depending on these two seats, different manners are required regarding the use of communication terminal devices such as mobile phones and PHS. In priority seats, passengers who need medical equipment that malfunctions due to electromagnetic waves, etc. are seated, so it is required to turn off the power, while in general passenger seats, it does not disturb other passengers It is necessary to stop the call function and ringtone to a certain extent.

  Regarding the manner control of the communication terminal device in the mobile body as described above, Patent Literature 1 describes the attribute of whether the user of the mobile phone in the mobile body is driving or a passenger and the moving speed of the mobile body. A communication terminal device that can control a transmission / reception function is disclosed.

  The invention disclosed in Patent Document 2 controls transmission / reception of a communication terminal device in a public transportation vehicle. In this invention, the interval time for switching the reception channel when moving from the radio zone of one base station to the radio zone of another adjacent base station is measured, and the average train speed and the average distance between base stations are measured. A control signal for setting ON / OFF of the manner mode is determined by setting a determination reference time calculated based on the result, comparing the measured channel switching interval time and the determination reference time to determine whether or not the vehicle is on the vehicle. It is possible to output.

  The invention disclosed in Patent Document 3 is a communication terminal device capable of controlling a transmission / reception function of a communication terminal according to a moving speed, a place of use, and a use state of the communication terminal device in a private car and public transportation. And a communication control system. Furthermore, according to the present invention, in public transportation, by providing a transmission device that emits a control signal to the deck unit and the riding unit, forcibly restricting the use of the communication terminal device according to the position in the vehicle. It is possible.

JP 2004-015728 A, paragraph 0026, FIG. JP2003-0661153, paragraph 0029, FIG. JP2004-242174, paragraph 0043, FIGS.

  However, in the conventional communication terminal device and the system described above, for example, different functional restrictions are not applied between the vicinity of the priority seat in the public transportation vehicle and the others. Therefore, even in places other than the vicinity of the priority seat, the same control such as “stop transmission / reception of the communication terminal device” as in the priority seat is executed. Further, in the prior art, since a control signal having a constant frequency and intensity is transmitted to the entire vehicle, there is a problem that radio waves in the vicinity of the priority seat affect a pacemaker or the like.

  The present invention has been made in view of the above-described problems. The first area where the function should be restricted and the second area where the function should be stopped are identified, and the function restriction control is performed according to each area. It is an object of the present invention to provide a communication terminal device and a communication control system that can suppress the occurrence of radio wave interference in two areas.

  According to the communication control system according to the present invention, the communication terminal apparatus that performs voice and data communication with a base station, and the communication terminal apparatus communicate with the communication terminal apparatus separately from the communication with the base station. A communication control system including a control unit that controls a function of the communication terminal device, wherein the control unit is provided in a first region where the function of the communication terminal device is to be restricted, and the function of the communication terminal device is controlled. First signal generating means for emitting a first signal for restriction; first signal transmitting means provided in the first region for transmitting the first signal from the first signal generating means to the communication terminal device; A second signal generating means for emitting a second signal for stopping the function of the communication terminal device, provided in a second region adjacent to the first region and which should stop the function of the communication terminal device; The second signal provided in the region Second signal transmission means for transmitting the second signal from the live means to the communication terminal apparatus with lower power than the first signal, wherein the communication terminal apparatus comprises the first signal transmission means and the second signal transmission means. A receiving means for receiving the first and second signals respectively transmitted from the signal transmitting means, and a function for limiting or stopping the function of the communication terminal apparatus based on the received intensity ratio of the first and second signals And a limiting means.

  In addition, the communication terminal apparatus according to the present invention performs voice and data communication with the base station, and for the function restriction transmitted from the first signal transmission means provided in the first region where the function restriction is to be performed. Of the first signal and the second signal transmitting means provided in the second region to be deactivated adjacent to the first region, the power is smaller than that of the first signal, and the first signal for halting the function is transmitted. A communication terminal device that receives two signals separately from the communication with the base station and restricts or stops its function, receiving means for receiving the first and second signals, and the reception And a function restricting means for restricting or stopping the function based on the intensity ratio of the first and second signals.

  According to the present invention, the first signal from the first signal transmitting means provided in the first area where the function is restricted and the second signal from the second signal transmitting means provided in the second area where the function is to be stopped are provided. From the intensity ratio with the signal, it recognizes whether the communication terminal device is located in the first or second area, and performs function restriction based on the first or second signal according to each area. Function restriction control suitable for each area becomes possible.

  In addition, according to the present invention, since the second signal emitted from the second area is transmitted with lower power than the first signal emitted from the first area, the occurrence of radio interference in the second area is suppressed. can do.

Hereinafter, an embodiment according to the present invention will be described with reference to the drawings.
FIG. 1 is a schematic diagram of a mobile communication system according to an embodiment of the present invention.

  As shown in FIG. 1, a general passenger area (1) is often provided in a place excluding the front and rear portions in a moving body 1 that is generally a train vehicle, and a priority seat area (2) is often provided in the front and rear portions.

  A user possesses communication terminal apparatuses 3a to 3c and gets in the mobile body 1. Transmitters 4 a and 4 a are provided on the ceiling of the priority seat area (2) at both ends of the mobile body 1, and a transmitter 4 b is provided on the ceiling of the general passenger area (1) in the center of the mobile body 1.

  Further, as shown in FIG. 1, the system is not limited to a specific number of three transmission devices and three communication terminal devices, and may be a system including a plurality of transmission devices and one to a plurality of communication terminal devices.

  FIG. 2 is a functional block diagram of the communication terminal device 3 according to an embodiment of the present invention.

  The communication terminal device 3 includes a display device 301, a key input device 302, a transmission / reception unit 303, an antenna 303a, an audio processing circuit 304, a speaker 304a, a microphone 304b, a reception antenna 305, a reception circuit 306, a storage unit 307, a control circuit 308, and a battery 309. It has.

  The display device 301 is a liquid crystal display, an organic EL display, or the like, for example, and displays character information, still image information, and moving image information. While confirming the display device 301, a character or symbol is input by the key input device 302. The key input device 302 includes various keys such as a call start key, a redial key, a call end / power key, and numeric keys “0” to “9”.

  The antenna 303a is connected to a wireless communication line, and executes wireless communication processing with the base station based on a control command from the control circuit 308. The transmission / reception unit 303 has a function of transmitting / receiving voice information, character information, a control signal, and the like via the antenna 303a. The audio processing circuit 304 decodes the audio data supplied from the control circuit 308 and outputs it from the speaker 304a or encodes the audio signal input from the microphone 304b. The reception antenna 305 receives a signal having position specifying information transmitted from the transmission device 4 separately from communication with the base station. The receiving circuit 306 demodulates and decodes the received signal, and outputs it to the control circuit 308. The storage unit 307 stores a telephone number, a name, a number, a character, a figure, an image registered by the user, information for specifying a position to be described later, and the like. Such information is read or written by the control circuit 308. The control circuit 308 controls the transmission / reception unit 303, the display device 301, and the sound processing circuit 304 in accordance with instructions from the key input device 302. Further, the main power supply is stopped or the communication function is restricted based on the intensity ratio of the control signal. The control circuit 308 is driven by being supplied with electric power from the battery 309 and supplies electric power to the units 301 to 307. Further, when the control circuit 308 executes the stop of the main power supply, the control circuit 308 stops the power supply to other than the control circuit 308 and stops the transmission and reception of radio waves with the base station. After that, if the control circuit 308 determines that the time required for recovery has elapsed, the power supply stop is released. Here, the restriction of the communication function includes control for stopping the ringtone and control for making the call impossible.

  Next, the configuration of the transmission device 4 will be described with reference to FIG. FIG. 3 is a functional block diagram of the transmission device 4 according to an embodiment of the present invention. The transmission device 4 includes position information data 401, a transmission interval generation circuit 402, a position information transmission circuit 403, an encoding circuit 404, a transmission circuit 405, and a transmission antenna 406.

  The position information data 401 stores signal information that causes the communication terminal device 3 to specify a position. The transmission interval generation circuit 402 has a function of outputting a clock frequency so that signals are transmitted at regular intervals. It is sufficient that the clock frequency interval is 10 seconds or less. The position information transmission circuit 403 generates a signal including position information based on the position information data 401 and the signal input from the transmission interval generation circuit 402 and outputs the signal to the encoding circuit 404. The encoding circuit 404 encodes the control signal and outputs it to the transmission circuit 405. The transmission circuit 405 generates a transmission signal by modulating the signal output from the encoding circuit 404 with a predetermined frequency, and supplies the transmission signal to the transmission antenna 406. Based on the control signal emitted from the transmission antenna 406, the communication terminal device 3 executes communication control.

  Next, a method for determining the position of the communication terminal device 3 will be described with reference to FIGS. FIG. 4 is a diagram showing the relationship between the signal strength and the position of the moving body. Reference numerals 5a and 5b represent control signals 5 transmitted from the respective transmission devices 4a and 4b.

  Here, the communication method applied between the communication terminal device 3 and the transmission device 4 described above has little influence on the human body such as gigahertz band communication (Bluetooth, IEEE802.11a, IEEE802.11b, IEEE802.11g). Communication means are suitable. This type of wireless communication can be used even if there is an obstacle as long as the distance between the devices is within about 10 m. Accordingly, as shown in FIG. 1, a plurality of transmission devices 4a and 4b are arranged in the mobile body 1, and radio waves specific to the area can be transmitted to the general passenger area (1) and the priority seat area (2), respectively. Is possible. In addition, it is also possible to use infrared communication.

  Further, in order not to cause a malfunction of the medical device, control is performed with a lower output than the transmission device 4a arranged in the priority seat area (2) as compared with the transmission device 4b arranged in the general riding area (1). Signal 5a is transmitted. The control signals 5a and 5b have different oscillation frequencies. In particular, the control signal 5a oscillates in a wavelength band that does not affect the medical device.

As shown in FIG. 4, the strengths of the control signals 5a and 5b are attenuated as the distance from each transmission device 4a and 4b increases. The control circuit 308 calculates the intensity ratio of the control signal 5 and recognizes the position in the moving body 1. When the intensity of the control signals 5a and 5b is S _f5a and S _f5b , and the intensity ratio of the control signal 5a to the control signal 5b on the boundary line A between the general passenger area (1) and the priority seat area (2) is S _Th The determination as to whether or not the area is the passenger area (1) can be performed by determining whether or not S _f5a / S _f5b ≧ S _Th . It should be noted that the intensity ratio _{STh serving as the} determination criterion is stored in the storage unit 307.

  Next, an operation process of the communication terminal device 3 in the mobile body 1 will be described with reference to the flowchart of FIG. In the following flowchart, the step is represented by S.

  First, in the mobile 1, the control circuit 308 of the communication terminal device 3 determines whether or not the reception circuit 306 has received the control signal 5 from the transmission device 4 (S 501).

  If the control signal 5 is received (S501, Yes), the control circuit 308 discriminates the control signals 5a and 5b by frequency and calculates the intensity ratio between them (S502). On the other hand, if the control signal 5 has not been received (S501, No), this control ends.

Next, the control circuit 308 reads S _Th that is a determination criterion for the intensity ratio from the storage unit 307, and based on the received intensity ratio, whether or not the position in the moving body 1 is the priority seat area (2). Is determined (S503). Here, when the intensity ratio (S _f5a / S _f5b ) is less than S _Th , it is determined that the area is a general passenger area (1) (S503, No), and the intensity ratio (S _f5a / S _f5b ) is greater than or _equal to S _Th . Is determined to be the priority seat area (2) (S503, Yes).

  When it is determined that the area is the general passenger area (1) (No in S503), the control circuit 308 controls the manner mode (ringing tone stop mode) so that the call cannot be performed (S505).

  On the other hand, when it is determined that it is the priority seat area (2) (S503, Yes), the control circuit 308 stops the main power supply of the communication terminal device 3 (S504). When the functions such as S504 and S505 are limited, the control circuit 308 determines that a certain period of time has elapsed (S506, S507), and returns to the normal use state (S508). As described above, the present control process ends. However, in the area where the control signal 5 is received, the above-described control process is repeatedly performed, and the predetermined time passes from the area where the control signal 5 is received. Can be removed.

  As mentioned above, although embodiment of invention was described, this invention is not limited to this. For example, in the above-described embodiment, the present invention is applied to the function restriction in a train. However, the present invention can be applied to the function restriction such as a bus or a hospital.

1 is a schematic diagram of a mobile communication system according to an embodiment of the present invention. It is a block diagram which shows the structure of the communication terminal device which concerns on one Embodiment of this invention. It is a block diagram which shows the structure of the transmitter which concerns on one Embodiment of this invention. It is a figure which shows the relationship between the intensity | strength of the control signal which the transmitter transmitted in the mobile communication system which concerns on one Embodiment of this invention, and the position of a mobile body. It is a flowchart which shows the operation | movement procedure of the communication terminal device which concerns on one Embodiment of this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Mobile body, 3 ... Communication terminal device, 301 ... Display apparatus, 302 ... Key input device, 303 ... Transmission / reception part, 303a ... Antenna, 304 ... Voice processing circuit , 304a ... Speaker, 304b ... Microphone, 305 ... Reception antenna, 306 ... Reception circuit, 307 ... Storage unit, 308 ... Control circuit, 309 ... Battery, ... Transmission device 401: Position information data 402 ... Transmission interval generation circuit 403 ... Position information transmission circuit 404 ... Coding circuit 405 ... Transmission circuit 406 ... Transmission antenna 5 ... Control signal

Claims (5)

A communication terminal device that performs voice and data communication with a base station;
A communication control system comprising control means for controlling the function of the communication terminal device by performing communication with the communication terminal device separately from the communication with the base station,
The control means includes
First signal generating means for emitting a first signal for limiting the function of the communication terminal device, provided in a first region where the function of the communication terminal device should be limited;
First signal transmitting means provided in the first region for transmitting a first signal from the first signal generating means to the communication terminal device;
A second signal generating means for emitting a second signal for stopping the function of the communication terminal device provided in a second region adjacent to the first region and which should stop the function of the communication terminal device;
A second signal transmitting means provided in the second region for transmitting the second signal from the second signal generating means to the communication terminal device with lower power than the first signal;
The communication terminal device
Receiving means for receiving first and second signals respectively transmitted from the first signal transmitting means and the second signal transmitting means;
A function control means for limiting or stopping the function of the communication terminal device on the basis of the received intensity ratio of the first and second signals.   2. The communication control system according to claim 1, wherein the first signal transmission unit and the second signal transmission unit transmit the first signal and the second signal at different oscillation frequencies.   The communication control system according to claim 1 or 2, wherein communication between the first signal transmission unit and the second signal transmission unit and the reception unit is infrared communication or gigahertz band wireless communication. Voice and data communication with the base station, and a first signal for function restriction transmitted from the first signal transmitting means provided in the first area where the function is restricted, and the first area Communication with the base station of a second signal for stopping the function, which is transmitted from the second signal transmitting means provided in the adjacent second region where the function is to be stopped, and whose power is smaller than that of the first signal. A communication terminal device that is received separately and restricts or stops its function,
Receiving means for receiving the first and second signals;
And a function limiting unit that limits or stops the function based on the received intensity ratio of the first and second signals.   5. The communication terminal apparatus according to claim 4, wherein the receiving means is infrared communication or gigahertz band wireless communication.

Images