JP2007243672A - Wireless terminal control system and method, wireless terminal, and signal generator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a system capable of on/off controlling a power supply of a wireless terminal without using a transmission function of a wireless terminal side. <P>SOLUTION: A pseudo signal generation part 3 is provided for generating a GPS (Global Positioning System) pseudo signal and transmitting an electric wave of the GPS pseudo signal from an antenna 4 to a predetermined cellular phone disabled area 2. The cellular phone 1 includes a GPS receiving part for controlling on/off of a power supply in response to the received GPS pseudo signal. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a technology for controlling a wireless terminal such as a mobile terminal, and more particularly to a system, method, and apparatus suitable for application to automatic power on / off of a mobile terminal.

  As mobile terminals such as mobile phones become widespread, regulations on the use of mobile phones are being strengthened. As a device that emits radio waves, and from the viewpoint of manners by voice calls, use in specific places such as hospitals, airplanes, trains, concert venues, etc., and regulations on power-off have been tightened. .

  The operation of turning off the power of the mobile phone is manually performed by the user of the mobile phone, and there are disadvantages and annoyance caused by forgetting to turn off the power.

JP 2001-359149 A JP 2001-094518 A

  As a technique for solving this problem, for example, as shown in FIG. 13A, a radio wave of a specific signal is transmitted to a specific area (mobile phone use prohibited area) and detected. Communication means include WCDMA (Wide-Band CDMA), GSM (Global System for Mobile Communications), CDMA (Code Division Multiple Access), PDC (Personal Digital Cellular), PHS (Personal Handy-phone System), etc. However, all of them use a transmission / reception function, that is, a transmission function as well as reception. However, in mobile phone use-prohibited areas, it is the original purpose to prevent malfunctions to instruments such as pacemakers, hospitals / airplanes, etc. by transmitting radio waves from mobile phones. Using the communication function causes a malfunction of the pacemaker or the device, and conversely becomes a problem.

  In Patent Document 1, an option of a wireless device is transmitted from the BTS into the update zone and based on reception of the update signal (the ringing braking is changed from ringing to vibration, and the wireless device or the transmission unit of the wireless device is disabled). A method and apparatus for performing the update are disclosed. This method corresponds to the method of FIG. Patent Document 2 also discloses a system in which a wireless base station transmits value-added information to a mobile phone using a broadcast channel.

  As another communication function that uses weak radio waves, there is a contactless IC card as shown in FIG. 13C, for example. However, there is a possibility that the communication distance is short and it cannot be detected that the mobile phone has entered the area. In practice, this is insufficient.

  Further, as shown in FIG. 13B, the transmission function of the mobile phone works even when the off control is performed using the communication by Bluetooth. As a result, as in the case of FIG. May also cause malfunction.

  Accordingly, an object of the present invention is to provide a system, a method, an apparatus, and a wireless terminal that enable power control of the wireless terminal without using a transmission function on the wireless terminal side such as a mobile terminal.

  In order to solve the above-described problems, the present invention is generally configured as follows.

  A wireless terminal control system according to one aspect of the present invention generates a GPS (Global Positioning System) pseudo signal to indicate a specific area where the operation of the wireless terminal needs to be controlled, The area includes GPS pseudo signal generation means for transmitting radio waves of the GPS pseudo signal, and the wireless terminal receives a GPS signal, and the GPS pseudo signal received by the GPS receiver in the area. And a means for controlling the operation of the wireless terminal according to

  In the present invention, the wireless terminal includes power control means for controlling power of at least the communication unit of the wireless terminal according to the received GPS pseudo signal, and the wireless terminal enters the area in a power-on state. At that time, the power of the communication unit of the wireless terminal is automatically turned off based on the received GPS pseudo signal. In the present invention, when the wireless terminal leaves the area, the power control means automatically turns on the power of the communication unit of the wireless terminal.

  In the present invention, the wireless terminal does not use the transmission function of the wireless terminal in power control within the area.

  In the present invention, the GPS pseudo signal generating means includes means for generating a GPS pseudo signal obtained by synthesizing an identification signal indicating that the area is the specific area with a GPS signal received in the area. .

  In the present invention, the GPS pseudo signal generation means may include a means for generating a GPS pseudo signal obtained by combining a GPS signal received in the area with a signal corresponding to an additional GPS satellite. The wireless terminal includes an additional GPS satellite detection circuit that detects a signal corresponding to an additional GPS satellite from a GPS signal received by the GPS receiver, and detects a signal corresponding to the additional GPS satellite in the additional GPS satellite detection circuit. Based on the result, the power is turned on / off.

  In the present invention, the GPS pseudo signal generating means may include a means for generating a GPS pseudo signal obtained by adding an identification signal to a part of a navigation message to a GPS signal received in the area. The wireless terminal includes an identification signal detection circuit that detects an identification signal in a navigation message from a GPS signal received by the GPS receiver, and the power is turned on based on the detection result of the identification signal in the identification signal detection circuit. Control off.

  In the present invention, the GPS pseudo signal generation means generates a GPS pseudo signal in which a pseudo distance error between a predetermined GPS satellite and a GPS receiver is set to a value different from an actual value in the GPS signal received in the area. It is good also as a structure provided with the means to do. The wireless terminal includes an error determination circuit that detects a value that is different from an actual pseudorange error from the GPS signal received by the GPS receiver, and the power is turned on based on the detection result of the identification signal in the error determination circuit. Control off.

  In the present invention, the GPS pseudo signal generation means may include a means for generating a GPS pseudo signal indicating specific position information determined in advance for a GPS signal received in the area. The wireless terminal performs power on / off control in accordance with whether or not specific position information determined in advance is indicated from a GPS signal received by the GPS receiver.

In the method according to the present invention, the GPS pseudo signal generating means generates a GPS pseudo signal to indicate that the specific area needs to control the operation of the wireless terminal, and the GPS pseudo signal is generated in the area. The process of transmitting
The wireless terminal receives a GPS signal, and controls the operation of the wireless terminal according to the GPS pseudo signal received by the GPS receiver in the area;
including.

  In the method according to another aspect of the present invention, the wireless terminal controls at least a power supply of a communication unit of the wireless terminal according to the received GPS pseudo signal, and the wireless terminal enters the area in a power-on state. When entered, the power of the communication unit of the wireless terminal is automatically turned off based on the received GPS pseudo signal. When the wireless terminal leaves the area, the power of the communication unit of the wireless terminal is automatically turned on.

  In the method according to the present invention, the wireless terminal does not use the transmission function of the wireless terminal in the power on / off control in the area.

  In the method according to the present invention, the GPS pseudo signal generating means generates a GPS pseudo signal obtained by synthesizing the GPS signal received in the area with an identification signal that indicates the specific area.

In the method according to the present invention, the GPS pseudo signal is:
A signal formed by combining a GPS signal received in the area with a signal corresponding to an additional GPS satellite,
A signal obtained by adding an identification signal to a part of the navigation message to the GPS signal received in the area,
A GPS signal received in the area, a signal obtained by setting a pseudo-range error between a predetermined GPS satellite and a GPS receiver to a value different from the actual value,
A signal indicating specific position information determined in advance in the GPS signal received in the area,
Any one of them.

A wireless terminal according to still another aspect of the present invention includes a GPS receiving unit that receives a GPS signal,
When the GPS signal received by the GPS receiver is a GPS pseudo signal indicating that the specific area needs to control the operation of the wireless terminal, the operation of the wireless terminal is controlled according to the GPS pseudo signal. And means for controlling.

  The wireless terminal according to the present invention comprises power control means for controlling at least the power of the communication unit of the wireless terminal according to the received GPS pseudo signal, and when the wireless terminal enters the area in a power-on state May be configured to automatically power off the communication unit of the wireless terminal based on the received GPS pseudo signal. In the wireless terminal according to the present invention, when the wireless terminal leaves the area, the power control unit may automatically turn on the power of the communication unit of the wireless terminal.

  In the wireless terminal according to the present invention, the transmission function of the wireless terminal is not used in power control in the area.

  The wireless terminal according to the present invention includes an additional GPS satellite detection circuit that detects a signal corresponding to the additional GPS satellite from the GPS signal received by the GPS receiver, and corresponds to the additional GPS satellite in the additional GPS satellite detection circuit. The power supply may be turned on / off based on the detection result of the signal.

  The wireless terminal according to the present invention includes an identification signal detection circuit that detects an identification signal in a navigation message from a GPS signal received by the GPS receiver, and a power source based on a detection result of the identification signal by the identification signal detection circuit It is good also as a structure which carries out on / off control.

  The wireless terminal according to the present invention includes an error determination circuit that detects a pseudo-range error from a value different from an actual value from a GPS signal received by the GPS receiver, and a power source based on the detection result of the identification signal in the error determination circuit It is good also as a structure which carries out on / off control.

  In the wireless terminal according to the present invention, the power supply may be controlled to be turned on / off depending on whether or not specific position information determined in advance is indicated from the GPS signal received by the GPS receiver.

  A signal generator (GPS pseudo signal generator) according to another aspect of the present invention generates a GPS pseudo signal to indicate that the specific area needs to control the operation of a wireless terminal, and the area In addition, GPS pseudo signal generation means for transmitting radio waves of the GPS pseudo signal from an antenna is provided, and the radio terminal controls the operation of the radio terminal according to the GPS pseudo signal received in the area.

  The signal generator according to the present invention further includes means for generating a GPS pseudo signal obtained by synthesizing the GPS signal received in the area with an identification signal that indicates the specific area.

  Alternatively, the signal generator according to the present invention may be configured to include means for generating a GPS pseudo signal obtained by synthesizing a GPS signal received in the area with a signal corresponding to an additional GPS satellite.

  Alternatively, the signal generator according to the present invention may be configured to include means for generating a GPS pseudo signal obtained by adding an identification signal to a part of the navigation message to the GPS signal received in the area.

  Alternatively, in the signal generator according to the present invention, a GPS pseudo signal is generated by setting a pseudo distance error between a predetermined GPS satellite and a GPS receiver to a value different from the actual value in the GPS signal received in the area. It is good also as a structure provided with the means to do.

  Alternatively, the signal generation device according to the present invention may be configured to include means for generating a GPS pseudo signal indicating specific position information determined in advance in a GPS signal received in the area.

  According to the present invention, it is possible to control the power supply of the wireless terminal without using the transmission function on the wireless terminal side, and avoid the influence on the pacemaker and various devices due to the wireless transmission from the wireless terminal in the use prohibited area. is doing. In addition, according to the present invention, the problem of forgetting to turn off the power is eliminated, the manual operation of turning on / off the power is unnecessary, and the convenience of the user can be improved.

  The above-described present invention will be described with reference to the accompanying drawings in order to explain in more detail. In the present invention, when a wireless terminal such as a mobile phone enters an area where the power must be turned off (use prohibited area) using a GPS (Global Positioning System) reception function, In response to receiving a GPS pseudo signal transmitted by radio waves, at least the communication unit of the wireless terminal is turned off, and only the GPS receiving unit of the wireless terminal is in a reception state (ON) or intermittently in a reception state (ON). Is set as follows. When moving from the use prohibited area to the useable area, control is performed to automatically turn on the power of the communication unit of the wireless terminal that has been turned off. In the present invention, the power-off control sequence in the prohibited area is performed in response to the reception of the GPS pseudo signal, and no signal is transmitted from the communication unit (RF unit) of the wireless terminal.

  As described above, according to the present invention, the GPS function can be used to determine the area without using the GPS signal reception function alone, and the GPS receiver can receive in a radio wave environment of −130 dBm or less, for example. That is, the transmission power does not require strong transmission power that causes the instrument to malfunction. GPS mobile phones are commercially available, and it is thought that the GPS function itself will be installed as a standard function of mobile phones, such as the start of emergency call response services. The Ministry of Internal Affairs and Communications is also promoting the installation of GPS functions in mobile phones, and the third generation (3G) mobile phones sold after April 2007 are targeted to be equipped with GPS location information notification functions. Yes. Hereinafter, description will be made with reference to examples.

  FIG. 1 is a diagram for explaining the configuration of an embodiment of the present invention. Referring to FIG. 1, an embodiment of the present invention is a GPS pseudo signal transmitting antenna for transmitting a GPS pseudo signal to a mobile phone 1 having a GPS receiver and a mobile phone use prohibition area 2 (off-necessary area). 4 and a pseudo signal generator 3 for sending a GPS pseudo signal to the antenna 4. A GPS pseudo signal is transmitted from the GPS pseudo signal transmitting antenna 4 in the cell phone use prohibition area 2, and the mobile phone 1 including the GPS receiver turns off the power when receiving the GPS pseudo signal. In addition, when the GPS pseudo signal is not received in the power-off state due to the reception of the GPS pseudo signal, the power is automatically turned on. The GPS pseudo signal includes a signal for identifying that the area 2 is a predetermined cell phone use prohibited area.

  FIG. 2 is a diagram showing a configuration of the mobile phone 1 of FIG. A mobile phone communication unit 11 and a GPS receiving unit 12 are provided. When receiving the GPS pseudo signal, the GPS receiving unit 12 performs control to turn off the power. The GPS receiving unit 12 is in a state of receiving GPS signals intermittently or continuously. That is, the GPS receiving unit 12 is supplied with power and is activated or intermittently activated in order to be able to receive GPS signals. When reception of the GPS pseudo signal is detected, a control circuit (not shown in FIG. 2) (see 13 in FIG. 5) automatically turns off the power of the mobile phone communication unit 11. If it is determined by reception of the GPS pseudo signal that the area is an area where the use of the mobile phone is prohibited, the liquid crystal display unit, CPU, etc., as well as the mobile phone communication unit 11, are turned off. Of course, it is also good.

  FIG. 3 is a flowchart for explaining the operation of the embodiment of the present invention. The GPS receiver 12 receives the GPS signal (step S11), and when the received signal is an identification signal that is a cell phone use prohibited area, the power of the cell phone communication unit 11 is turned off (step S13). If an identification signal that is a cell phone use prohibition area has not been received, the cell phone communication unit 11 is turned on (step S14). By such a control operation, the power of the mobile phone 1 is automatically set off in the cell phone use prohibition area 2 and the power of the mobile phone 1 is automatically set on outside the cell phone use area 2. Is done.

  FIG. 4 is a diagram showing a configuration of the GPS pseudo signal generator 3 of FIG. A GPS signal that can be received by the mobile phone 1 in the prohibited area is received by the receiving antenna 33. The pseudo satellite signal generator 31 causes the mixer 32 to superimpose a new GPS satellite signal (virtual GPS satellite signal) that is not currently used on the GPS signal received by the receiving antenna 33. New GPS satellites that are not currently used are selected differently from C / A codes that are conventionally used. In the GPS signal, all GPS satellites use the same frequency, and the C / A code (private) and P (Y) code (US military personnel only) are modulated with pseudo-random noise (PRN), which is a Gold code. The C / A code is measured by the C / A code placed at L1 = 15574.42 MHz.

  The signal synthesized by the mixer 32 (GPS pseudo signal) is transmitted as a signal indicating a specific area such as the cell phone use prohibition area 2 by the transmission antenna 4.

  FIG. 5 is a diagram illustrating a configuration of the GPS receiving unit 12 of FIG. Referring to FIG. 5, a GPS receiver 122 and an additional GPS satellite detection circuit 123 are provided. An existing GPS receiver 122 (chip or the like) is used. The detection result signal from the additional GPS satellite detection circuit 123 is supplied to the automatic power ON / OFF circuit 13. The additional GPS satellite detection circuit 123 is a circuit that demodulates the GPS satellite signal, is capable of receiving a new C / A code, and has received an additional GPS satellite signal from the GPS signal received by the GPS receiver 122? By recognizing whether or not, the automatic power supply ON / OFF circuit 13 performs on / off control of the power supply of the mobile phone communication unit 11. That is, when a new C / A code (GPS pseudo signal) is received by the GPS receiver 122, the mobile phone communication unit 11 is automatically turned off because it is determined as the mobile phone use prohibited area 2. When the newly provided GPS signal is not received, it is determined that the mobile phone can be used (a general place and not a specific area), and the mobile phone communication unit 11 that has been turned off is automatically turned on. And

  As described above, according to the present embodiment, when the mobile phone enters an area where the power of the mobile phone must be turned off, for example, in a hospital, an airplane, a train, or a concert hall, the mobile phone is automatically turned on. When the mobile phone is prohibited from being turned off and the mobile phone is prohibited from being used, the mobile phone can be automatically turned on. In addition, according to the present embodiment, it is possible to solve the problem of forgetting to turn off the power and the user does not need to perform the troublesome work of manually turning off the power, which can be improved manually. It becomes. When the mobile phone use prohibition area 2 is indoors, for example, the GPS signal power from the GPS satellite (5-1, 5-2, 5-3 in FIG. 4) received by the mobile phone 1 is particularly weak (or received). If the power (weak) of the GPS pseudo signal from the GPS pseudo signal transmitting antenna 4 is set slightly larger than the original GPS received signal, the GPS pseudo signal in the mobile phone 1 can be easily detected, By using a pseudo spread code or the like, the GPS pseudo signal is detected separately from the GPS signal from the GPS satellite.

  Next, a second embodiment of the present invention will be described. In this embodiment, similar to the above embodiment, in a certain area, the GPS identification signal sent to the area is received and the mobile phone communication unit 11 is automatically turned on / off. The configurations of the signal generator and the receiving unit of the mobile phone are different. That is, the GPS pseudo signal generator 3 (FIG. 1) transmits an identification signal as to whether it is a specific area using the GPS reception function, and the identification signal adding device includes the identification signal in the navigation message of the GPS signal. Is added.

  FIG. 6 is a diagram showing the configuration of the pseudo signal generator 3 in the second embodiment of the present invention. A GPS signal receivable at the place is received by the receiving antenna 33, and the identification signal adding device 34 adds a special identification signal to a part of the navigation message of the received GPS signal. The GPS signal having the navigation message to which the identification signal is added is transmitted as a signal indicating a specific place such as the cell phone use prohibited area 2 by the transmission antenna 4. The navigation data includes satellite orbit information, satellite clock information, ionosphere correction data, position information of other satellites, and the like.

  FIG. 7 is a diagram showing the configuration of the GPS receiver 12 (see FIG. 2) of the second embodiment of the present invention. Referring to FIG. 7, a GPS receiver (GPS receiver) 122 and an identification signal detection circuit 124 are provided. An existing GPS receiver 122 is used. The identification signal detection circuit 124 detects an identification signal in the navigation message added on the transmission side. Depending on whether or not the identification signal detection circuit 124 has received the identification signal, the automatic power ON / OFF circuit 13 performs on / off control of the power supply of the mobile phone communication unit 11 (FIG. 2). That is, when the GPS receiver 122 receives the identification signal, it is considered to be a cell phone use prohibition area 2. Therefore, when the cell phone communication unit 11 is automatically turned off and the identification signal cannot be received, Since it can be recognized as a telephone usable area (a general place and not a specific area), the power supply of the mobile phone communication unit 11 is automatically turned on.

  Next, a third embodiment of the present invention will be described. In the present embodiment, as in the previous embodiment, in a specific area, the GPS identification signal sent to that area is received and the on / off of the mobile phone communication unit 11 is automatically controlled. The configurations of the pseudo signal generator and the receiving unit of the mobile phone are different. The pseudo signal generator uses the GPS reception function to transmit an identification signal as to whether it is a specific area, and in the GPS pseudo distance error addition circuit, the pseudo distance error of a specific satellite having a GPS signal actually present is transmitted. Change to a value different from the actual value.

  FIG. 8 is a sky view showing the satellite arrangement. In this embodiment, the pseudorange error of one or a plurality of GPS satellites is changed to a value different from the actual value in FIG.

  FIG. 9 is a diagram showing the configuration of the pseudo signal generator 3 of the third embodiment of the present invention. A GPS signal receivable at the location is received by the receiving antenna 33, and the GPS pseudorange error adding circuit 35 changes the pseudorange error of one or more GPS satellites of the signal to a value different from the actual value. The GPS signal after the change is transmitted as a signal indicating a specific place such as the cell phone use prohibition area 2 by the transmission antenna 4.

  The pseudorange error is a parameter representing the distance between the GPS satellite and the GPS receiver, and the GPS receiver uses the pseudorange error as a positioning result at a point that intersects at a distance from a plurality of GPS satellites to the observation point. calculate.

  Deliberately changing the pseudorange error only for a certain satellite is clearly a strange result (error) when considering the distance from multiple GPS satellites, and based on this result, it can be determined that it is a pseudo signal It is.

  FIG. 10 is a diagram for explaining a third embodiment of the present invention. All the results other than the GPS satellite (SV6) indicate the point A, but the pseudorange error of the GPS satellite (SV6) is intentionally changed, which is contradictory and can be determined as an error. In general, the same phenomenon can occur in the actual GPS positioning environment due to the effects of multipath, etc., but by changing to a pseudo-range error with a large difference that is not possible in practice, it is classified into signals that have been intentionally changed. Is possible.

  FIG. 11 is a diagram showing the configuration of the GPS receiver 12 (see FIG. 2) according to the third embodiment of the present invention. The GPS receiver 122 has a built-in circuit (not shown) that detects whether the positioning result is appropriate from a plurality of GPS satellites. In this embodiment, the GPS receiver 122 can use an existing product as it is. it can. An error determination circuit 125 for determining the degree of uncertainty of the pseudorange error output from the GPS receiver 122 is provided, and it is determined whether or not the pseudorange error is intentionally added by the GPS pseudorange error addition circuit 35. Based on the determination result of the error determination circuit 125, the automatic power ON / OFF circuit 13 performs on / off control of the power supply of the mobile phone communication unit 11. That is, when the GPS receiver 122 receives a deliberate pseudo distance error, the current area is considered to be a cell phone use prohibition area 2, so the mobile phone 1 is automatically turned off and the deliberate pseudo distance error is detected. If the mobile phone cannot be received, the mobile phone can be recognized as an area where the mobile phone can be used (a general place and not a specific mobile phone use prohibited area 2), so the mobile phone is automatically turned on.

  Next, a fourth embodiment of the present invention will be described. In this embodiment, in the mobile phone use prohibition area 2, the basic configuration of receiving the GPS identification signal transmitted to the area and automatically turning on / off the power of the mobile phone communication unit 11 is as follows. Although it is the same as that of the said 1st Example, the structure of the receiving part of a GPS pseudo signal generator and a mobile telephone is different. In the present embodiment, identification is performed using a GPS pseudo signal indicating a specific point (latitude / longitude).

  As shown in FIG. 12, the GPS signal that can be actually received at the location should indicate the A point, but the GPS pseudo signal indicating the predetermined Z point is prohibited by the transmitting antenna 4 from using the mobile phone. A signal indicating a specific place such as area 2 is transmitted. In this case, as the Z point, a place where the mobile phone 1 cannot actually be used, for example, the sea, a volcanic crater, or the like is set.

  When the mobile phone 1 receives a GPS pseudo signal indicating such a preset location, the mobile phone 1 determines that the mobile phone is prohibited to use area 2, automatically turns off the mobile phone, If the GPS pseudo signal indicating the place cannot be received, it can be recognized as a mobile phone usable area (a general place and not a specific area), so the power of the mobile phone is automatically turned on.

  In the above embodiment, a mobile phone has been described as an example of a wireless terminal that receives a GPS pseudo signal and controls power on / off. However, in the present invention, the wireless terminal is not limited to a mobile phone. Of course, the present invention can be applied to any mobile terminal (PDA (Personal Digital Assistants), mobile PC, etc.) having a communication function in addition to the PHS terminal. Further, as a typical example of a wireless terminal using a GPS pseudo signal, the power on / off of the mobile phone communication unit has been described as an example, but the power on / off of the mobile phone communication unit is not limited, and the liquid crystal display unit, Of course, other than the GPS receiving unit, such as the unit, may be turned off. In the cellular phone use prohibition area, the GPS receiving unit may be intermittently turned on. Of course, in addition to power supply control, the operation mode of the wireless terminal may be variably controlled by a GPS pseudo signal.

  Although the present invention has been described with reference to the above-described embodiments, the present invention is not limited to the configurations of the above-described embodiments, and various modifications that can be made by those skilled in the art within the scope of the present invention. Of course, including modifications.

It is a figure for demonstrating one Example of this invention. It is a figure which shows the structure of the mobile telephone of the 1st Example of this invention. It is a flowchart for demonstrating operation | movement of the 1st Example of this invention. It is a figure for demonstrating the structure of the pseudo | simulation signal generation part of 1st Example of this invention. It is a figure which shows the structure of the GPS receiving part of the mobile telephone of 1st Example of this invention. It is a figure for demonstrating the structure of the pseudo signal generation part of the 2nd Example of this invention. It is a figure which shows the structure of the GPS receiving part of the mobile telephone of the 2nd Example of this invention. It is a figure for demonstrating the 3rd Example of this invention. It is a figure for demonstrating the structure of the pseudo signal generation part of the 3rd Example of this invention. It is a figure for demonstrating the 3rd Example of this invention. It is a figure which shows the structure of the GPS receiving part of the mobile telephone of the 3rd Example of this invention. It is a figure for demonstrating the 4th Example of this invention. (A), (B), (C) is a figure for demonstrating the automatic control system of the power-on / off of a mobile telephone.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Cellular phone 2 Cell phone use prohibition area 3 Pseudo signal generator 4 GPS pseudo signal transmission antenna 5-1 to 5-3 GPS satellite 11 Cell phone communication unit 12 GPS receiver 13 Automatic power on / off circuit 31 Pseudo satellite signal generation Device 32 Mixer 33 Reception antenna 34 Identification signal addition device 35 GPS pseudorange error addition circuit 121 GPS reception antenna 122 GPS receiver 123 Additional GPS satellite detection circuit 124 Identification signal detection circuit 125 Error discrimination circuit

Claims (35)

Generating a GPS (Global Positioning System) pseudo signal to indicate that it is a specific area where the operation of the wireless terminal needs to be controlled, and generating a GPS pseudo signal for transmitting the radio wave of the GPS pseudo signal to the area With means,
The wireless terminal includes: a GPS receiving unit that receives a GPS signal; and a unit that controls the operation of the wireless terminal according to the GPS pseudo signal received by the GPS receiving unit in the area. A wireless terminal control system. The wireless terminal includes power control means for controlling the power of at least the communication unit of the wireless terminal according to the received GPS pseudo signal,
2. The wireless device according to claim 1, wherein when the wireless terminal enters the area in a power-on state, the power of the communication unit of the wireless terminal is automatically turned off based on the received GPS pseudo signal. Terminal control system.   3. The wireless terminal control system according to claim 2, wherein when the wireless terminal leaves the area, the power control means automatically turns on the power of the communication unit of the wireless terminal.   4. The wireless terminal control system according to claim 2, wherein the wireless terminal does not use a transmission function of the wireless terminal in power control within the area.   The GPS pseudo signal generating means includes means for generating a GPS pseudo signal obtained by synthesizing an identification signal indicating that the specific area is included in a GPS signal received in the area. The wireless terminal control system according to claim 1.   2. The GPS pseudo signal generating means includes means for generating a GPS pseudo signal obtained by synthesizing a GPS signal received in the area with a signal corresponding to an additional GPS satellite. The wireless terminal control system described.   The wireless terminal includes an additional GPS satellite detection circuit that detects a signal corresponding to an additional GPS satellite from a GPS signal received by the GPS receiver, and detects a signal corresponding to the additional GPS satellite in the additional GPS satellite detection circuit. 7. The wireless terminal control system according to claim 6, wherein the power source is turned on / off based on the result.   The GPS pseudo signal generating means includes means for generating a GPS pseudo signal obtained by adding an identification signal to a part of a navigation message to a GPS signal received in the area. The wireless terminal control system according to 1.   The wireless terminal includes an identification signal detection circuit that detects an identification signal in a navigation message from a GPS signal received by the GPS receiver, and the power is turned on based on the detection result of the identification signal in the identification signal detection circuit. 9. The wireless terminal control system according to claim 8, wherein the wireless terminal control system is turned off.   The GPS pseudo signal generating means includes means for generating a GPS pseudo signal in which a pseudo distance error between a predetermined GPS satellite and a GPS receiver is set to a value different from the actual GPS signal received in the area. The wireless terminal control system according to claim 1, wherein:   The wireless terminal includes an error determination circuit that detects a value that is different from an actual pseudorange error from the GPS signal received by the GPS receiver, and the power is turned on based on the detection result of the identification signal in the error determination circuit. The wireless terminal control system according to claim 10, wherein the wireless terminal control system performs off control.   The said GPS pseudo signal generation means is provided with the means to produce | generate the GPS pseudo signal which shows the predetermined specific positional information on the GPS signal received in the said area, The characterized by the above-mentioned. Wireless terminal control system.   13. The wireless terminal performs power on / off control according to whether or not predetermined position information is indicated from a GPS signal received by the GPS receiver. Wireless terminal control system.   The wireless terminal control system according to claim 1, wherein the wireless terminal is a mobile phone. A GPS (Global Positioning System) pseudo signal generating means generates a GPS pseudo signal to indicate that the area is a specific area where the operation of the wireless terminal needs to be controlled. Sending
The wireless terminal receives a GPS signal, and controls the operation of the wireless terminal according to the GPS pseudo signal received by the GPS receiver in the area;
A wireless terminal control method comprising:   The wireless terminal controls at least the power of the communication unit of the wireless terminal according to the received GPS pseudo signal, and when the wireless terminal enters the area in a power-on state, the received GPS pseudo signal The wireless terminal control method according to claim 15, wherein the power of the communication unit of the wireless terminal is automatically turned off based on the above.   16. The wireless terminal control method according to claim 15, wherein when the wireless terminal leaves the area, the power of the communication unit of the wireless terminal is automatically turned on.   The radio terminal control method according to claim 16 or 17, wherein the radio terminal does not use a transmission function of the radio terminal in power on / off control in the area.   16. The GPS pseudo signal generation means generates a GPS pseudo signal obtained by synthesizing an identification signal indicating that the specific area is included in a GPS signal received in the area. The wireless terminal control method described. The GPS pseudo signal is
A signal formed by combining a GPS signal received in the area with a signal corresponding to an additional GPS satellite,
A signal obtained by adding an identification signal to a part of the navigation message to the GPS signal received in the area,
A GPS signal received in the area, a signal obtained by setting a pseudo-range error between a predetermined GPS satellite and a GPS receiver to a value different from the actual value,
A signal indicating specific position information determined in advance in the GPS signal received in the area,
The wireless terminal control method according to any one of claims 15 to 19, wherein the wireless terminal control method is any one of the following.   The radio terminal control method according to any one of claims 15 to 20, wherein the radio terminal is a mobile phone. A GPS receiver that receives a GPS (Global Positioning System) signal;
When the GPS signal received by the GPS receiver is a GPS pseudo signal indicating that the specific area needs to control the operation of the wireless terminal, the operation of the wireless terminal is controlled according to the GPS pseudo signal. Means for controlling;
A wireless terminal comprising: In accordance with the received GPS pseudo signal, at least power supply control means for controlling the power supply of the communication unit of the wireless terminal,
23. The wireless device according to claim 22, wherein when the wireless terminal enters the area with the power on, the wireless terminal automatically turns off the communication unit based on the received GPS pseudo signal. Terminal.   23. The wireless terminal according to claim 22, wherein when the wireless terminal leaves the area, the power control means automatically turns on the power of the communication unit of the wireless terminal.   The wireless terminal according to claim 23 or 24, wherein a transmission function of the wireless terminal is not used in power control in the area.   An additional GPS satellite detection circuit for detecting a signal corresponding to an additional GPS satellite from a GPS signal received by the GPS receiver, and a power source based on a detection result of the signal corresponding to the additional GPS satellite in the additional GPS satellite detection circuit The wireless terminal according to claim 22, wherein on / off control is performed.   The wireless terminal includes an identification signal detection circuit that detects an identification signal in a navigation message from a GPS signal received by the GPS receiver, and the power is turned on based on the detection result of the identification signal in the identification signal detection circuit. The wireless terminal according to claim 22, wherein the wireless terminal is turned off.   An error discriminating circuit for detecting a pseudo-range error different from the actual value from the GPS signal received by the GPS receiving unit, and turning on / off the power based on the detection result of the identification signal in the error discriminating circuit The wireless terminal according to claim 22.   23. The on / off control of the wireless terminal according to claim 22, wherein the wireless terminal performs power on / off control according to whether or not a specific position information predetermined from a GPS signal received by the GPS receiving unit is indicated. Wireless terminal.   A GPS (Global Positioning System) pseudo signal is generated to indicate a specific area where the operation of the wireless terminal needs to be controlled, and a radio wave of the GPS pseudo signal is transmitted from the antenna to the area. A signal generating apparatus comprising: a pseudo signal generating means, wherein the radio terminal controls an operation of the radio terminal according to the GPS pseudo signal received in the area.   31. A means for generating a GPS pseudo signal obtained by synthesizing an identification signal indicating that the specific area is included in a GPS signal received in the area. Signal generator.   31. The signal generator according to claim 30, further comprising means for generating a GPS pseudo signal obtained by synthesizing a signal corresponding to an additional GPS satellite with a GPS signal received in the area.   31. The signal generating device according to claim 30, further comprising means for generating a GPS pseudo signal obtained by adding an identification signal to a part of a navigation message to a GPS signal received in the area.   The GPS signal received in the area includes means for generating a GPS pseudo signal in which a pseudo-range error between a predetermined GPS satellite and a GPS receiver is set to a value different from the actual value. The signal generator according to claim 30.   31. The signal generating apparatus according to claim 30, further comprising means for generating a GPS pseudo signal indicating predetermined specific position information in a GPS signal received in the area.

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