JP2001320473A - Communication device system capable of controlling power supply by gps and portable communication apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem that a conventional communication device system cannot have limited the use of a portable electronic device because a transmission radio wave from a GPS satellite cannot be received in the inside of a building or the like so as not to detect its own position. SOLUTION: The portable communication apparatus 10 of this invention receives a transmission radio wave from a GPS satellite 40 and a signal processing function section 23 detects its own position. When the own position is matched with a user limit area stored in a memory function section 24, a communication control function section 13 controls a speech control section 12 to interrupt a power supply. In a building where the transmission radio wave from the GPS satellite 30 cannot be received, a position information generator 30 transmits position information at which the apparatus 10 is installed. A signal control section 31 stores in advance the position information where the apparatus 10 is placed, and uses this information for a position signal to allow a transmission reception control section 32 and an antenna 33 to transmit a radio wave with a low output. The GPS and the position information transmitter are used in common for the communication system to limit the use of the portable communication apparatus 10.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a communication device system and a portable communication device capable of controlling power supply by GPS for restricting use of a portable communication device, and particularly to a portable communication device in an area where use of the portable communication device is restricted such as a hospital. The present invention relates to a communication device system capable of controlling power supply by GPS and a portable communication device capable of reliably restricting use of the portable communication device.

[0002]

2. Description of the Related Art In recent years, with the rapid increase in the number of users of portable communication devices, for example, portable telephones, the use of portable telephones in public places has become a problem. In particular, use in hospitals may cause medical electronic devices to malfunction, and we want to forcibly restrict the use of mobile phones, but for now we have to rely on the manners of users. In the situation.

[0003] For example, Japanese Patent Application Laid-Open No. H11-298947
Japanese Patent Application Publication No. JP-A-2005-115122 discloses a case where a GPS receiver receives a transmission radio wave from a GPS satellite, detects a self-position by a self-position detector from received information, and determines that the current self-position is within a preset area. A portable electronic device that cuts off its own power has been proposed.

[0004]

However, Japanese Patent Application Laid-Open No.
In what is described in JP-A-298947, GP
Since the transmission power of the radio wave transmitted from the S satellite is low, GP
If an object such as a wall of a building blocks the space between the S receiving unit and the GPS satellite, the transmission radio wave from the GPS satellite cannot be received. For this reason, the self-position cannot be detected in a building such as a hospital or inside a body of an aircraft, and there is a problem that the use of the portable electronic device cannot be restricted.

[0005] The present invention is based on the background
As a communication system using S, a communication device system and a portable communication device capable of restricting the use of the portable communication device in a specific area (use-restricted area where the use of the portable communication device is restricted) are provided. I do.

[0006]

In order to solve the above-mentioned problems, the present invention provides the following means.

The invention according to claim 1 of the present invention is characterized in that, when a portable communication device is receiving a transmission radio wave from a GPS satellite, the portable communication device receives the transmission radio wave from the GPS satellite and receives the transmission radio wave from the GPS satellite. When the self-position is detected and the self-position coincides with the use-restricted area of the portable communication device stored in advance, the power of the portable communication device is turned off, and the portable communication device transmits the signal from the GPS satellite. When no radio wave is received, the portable communication device is powered off by receiving position information related to the use restricted area transmitted from the position information transmitting device installed in the restricted use area. I do.

The invention according to claim 2 of the present invention is characterized in that, when the portable communication device is receiving a transmission radio wave from a GPS satellite, the portable communication device receives the transmission radio wave from the GPS satellite, and The self-position of the device is detected, and when the self-position matches the use-restricted area of the portable communication device obtained from the position information database installed at a place separated from the portable communication device, the power supply of the portable communication device Is disconnected, and when the portable communication device does not receive the transmission radio wave from the GPS satellite, the portable communication device receives the position information related to the use restricted area transmitted from the position information transmitting device installed in the use restricted area. And turning off the power of the portable communication device.

Further, according to a third aspect of the present invention, there is provided a portable communication device for receiving a transmission radio wave from a GPS satellite, and positional information installed in a use restricted area in which use of the portable communication device is to be restricted. A communication device system capable of power control by GPS including a transmitting device, wherein the portable communication device receives a transmission radio wave from the GPS satellite and detects a self-position of the portable communication device. Means, a comparing means for comparing whether the self-position and the pre-stored use-restricted area match, and a notifying means for notifying prohibition of radio wave transmission when the self-position matches the use-restricted area. , Receiving position information transmitted from the position information transmission device, and transmission and reception control means for transmitting to the notification means, the position information transmission device,
In the case where the position information relating to the position where the self is installed is stored in advance, and position information control means for transmitting the position information is provided, and the portable communication device is receiving a transmission radio wave from the GPS satellite, When the transmission radio wave from the GPS satellite is received, and when the self-position coincides with the use restriction area, the transmission of the radio wave is prohibited and the power of the portable communication device is turned off. When no transmission radio wave is received from the portable communication device, the portable communication device is powered off by receiving the position information transmitted from the position information transmission device.

Further, according to a fourth aspect of the present invention, there is provided a portable communication device for receiving a transmission radio wave from a GPS satellite, and positional information installed in a restricted use area where use of the portable communication device is to be restricted. A communication device system capable of controlling power by GPS including a transmitting device, wherein the position information database stores the position information of the use-restricted area, and is installed in a place away from the portable communication device;
A base station that transmits position information from the position information database;
Self-position detecting means for receiving a transmission radio wave from the S satellite and detecting the self-position of the portable communication device; memory means for storing the use-restricted area; and the use-restricted area of the self-position and the memory means A comparison unit for comparing whether or not the position information coincides with, a notifying unit for notifying the prohibition of radio wave transmission when the self-position coincides with the use restriction area, and receiving position information transmitted from the position information transmission device. With transmission and reception control means for receiving the position information from the position information database, and transmitting to the notification means,
The position information transmitting device stores position information relating to a position where the device is installed in advance, and includes position information control means for transmitting the position information, and the portable communication device is stored in the position information database. Acquiring location information about the restricted use area via the base station,
When the portable communication device is receiving the transmission radio wave from the GPS satellite, the mobile communication device receives the transmission radio wave from the GPS satellite, and the self-position matches the use restricted area acquired from the position information database. Then, notification of prohibition of radio wave transmission is made, the power of the portable communication device is turned off, and when the portable communication device has not received the transmission radio wave from the GPS satellite, the portable communication device is transmitted from the position information transmitting device. The portable communication device is powered off by receiving the position information.

Further, in the invention according to claim 5 of the present invention, the output of a radio wave transmitted from the position information transmitting device according to any one of claims 1 to 4 does not affect devices in the restricted use area. It is characterized by low output.

[0012] Further, the invention according to claim 6 of the present invention is a portable communication device for receiving a transmission radio wave from a GPS satellite, wherein the portable communication device receives the transmission radio wave from the GPS satellite. Receiving the transmitted radio wave from the satellite,
When the self-position is detected and the self-position and the pre-stored use-restricted area of the portable communication device coincide with each other, the power of the self-station is cut off, and if the transmission radio wave from the GPS satellite is not received, The apparatus is characterized in that it receives the position information on the use-restricted area transmitted from the position information transmitting device installed in the use-restricted area and turns off its own power supply.

Further, according to a seventh aspect of the present invention, there is provided a portable communication device for receiving a radio wave transmitted from a GPS satellite, wherein the portable radio device receives the radio wave transmitted from the GPS satellite. Receiving the transmitted radio wave from the satellite,
When the self-position is detected, and the self-position and the use-restricted area of the portable communication device obtained from the position information database installed at a location separated from the portable communication device match, the power supply of the portable device is cut off, When a transmission radio wave from a GPS satellite is not received, the terminal receives power from the location information transmitting device installed in the restricted use area and receives the positional information related to the restricted use area, and turns off its own power source. And

Further, the invention according to claim 8 of the present invention is a portable communication device for receiving a transmission radio wave from a GPS satellite, wherein the portable communication device receives the transmission radio wave from the GPS satellite,
Self-position detecting means for detecting the self-position of the portable communication device, and comparing means for comparing whether the self-position matches a use-restricted area in which use of the portable communication device stored in advance is desired to be restricted, Notifying means for notifying the prohibition of radio wave transmission when the self-position coincides with the restricted use area, and receiving position information transmitted from a positional information transmitting device installed in the restricted use area, and transmitting to the notifying means Transmission / reception control means for receiving the transmission radio wave from the GPS satellite, receiving the transmission radio wave from the GPS satellite, detecting the self-position, and setting the self-position to the use-restricted area. When they match, it notifies the transmission prohibition of the radio wave and turns off its own power source. If the transmission radio wave from the GPS satellite is not received, the radio wave transmitted from the position information transmission device is transmitted. It receives location information relating to use restricted area, characterized in that cutting its own power supply.

Further, according to a ninth aspect of the present invention, there is provided a portable communication device for receiving a transmission radio wave from a GPS satellite, the radio communication device receiving the transmission radio wave from the GPS satellite,
Self-position detecting means for detecting the self-position of the portable communication device; memory means for storing a use-restricted area of the portable communication device; and the self-position coincides with the use-restricted area in the memory means. Comparing means for comparing whether the self-position coincides with the use-restricted area, a notifying means for notifying prohibition of transmission of radio waves, and position information transmitted from a position-information transmitting device installed in the use-restricted area. Transmission / reception control means for receiving and receiving position information on the use-restricted area from a position information database installed at a location separated from the portable communication device, and transmitting the information to the notifying means; If a radio wave is being received, a radio wave transmitted from the GPS satellite is received, the self-position is detected, and the self-position is indicated by the position information data. When the location coincides with the use-restricted area obtained from the database, the mobile station turns off its power by notifying the prohibition of radio wave transmission, and transmits the radio wave from the position information transmitting device when the transmission radio wave from the GPS satellite is not received. The apparatus is characterized in that its own power supply is turned off by receiving position information.

Further, according to a tenth aspect of the present invention, the output of the radio wave transmitted from the position information transmitting device according to any one of the sixth to ninth aspects does not affect devices in the restricted use area. Low output.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS (First Embodiment) Next, a first embodiment of the present invention will be described in detail with reference to the drawings. Referring to the block diagram of FIG. 1, the first embodiment of the present invention includes a portable communication device 10 and a position information transmitting device 30. Portable communication device 10
Is a power supply 11, a call control function unit 12, a communication control function unit 1.
3, includes a transmission / reception control unit 14, an antenna 15, and a GPS signal processing unit 20. The GPS signal processing unit 20 includes a GPS antenna 21, a GPS receiving unit 22, a signal processing function unit 23, and a memory function unit 24. The position information transmitting device 30 includes a signal control unit 31, a transmission / reception control unit 32, and an antenna 33.

The power supply 11 is a power supply for the portable communication device 10 and is turned on (turned on) / off (disconnected). The transmission / reception control unit 14 controls transmission / reception of communication radio waves using the antenna 15. The communication control function unit 13 includes the transmission / reception control unit 1
The mobile communication device 10 is controlled according to the signal received by the communication device 4. The call control function unit 12 controls a call in communication.

In the GPS signal processing section 20, the GPS receiving section 22 uses the GPS antenna 21 and the GPS satellite 4
The transmission radio wave from 0 is received. The signal processing function unit 23
The position (self-position) of the portable communication device 10 is detected from the received radio wave. The memory function unit 24 includes the portable communication device 10
The position information of the use-restricted area for restricting the use of is stored in advance. The restricted use area may be a medical institution such as a hospital, a public facility such as a library, a museum, a movie theater, a concert hall, an airfield, or inside a train.

In the position information transmitting device 30, the signal control section 31 stores in advance position information on the position where the position information transmitting device 30 is installed. The position information transmitting device 30 is installed inside or near the use restricted area. For example, if the use restricted area is a building, it may be installed at an entrance or inside. The transmission / reception control unit 32 uses the antenna 33 to transmit a radio wave as a position signal using the position information transmitted from the signal control unit 31 with a low output that does not affect devices in the restricted use area. The radio wave transmitted at this low output is received by the portable communication device 10.

Next, the operation of the first embodiment of the present invention will be described in detail with reference to the block diagram of FIG. 1 and the flowchart of FIG. The flowchart showing the operation of the portable communication device 10 shows the operation of confirming the prohibition / permission of communication when the portable communication device 10 attempts to start communication.

First, when communication is to be started from the power supply 11 being turned on (turned on) or turned off (disconnected),
(Step S1 in FIG. 2), the signal processing function unit 23
It is determined whether a transmission radio wave from the S satellite 40 has been received (step S2). If the transmission radio wave is being received (YES in step S2), the signal processing function unit 23 detects the self-position, and uses the self-position and the restricted use area (communication prohibited area) stored in the memory function unit 24. Are compared with each other (step S3). If the area is not the use restriction area (NO in step S3), the signal processing function unit 23 notifies the communication control function unit 13 of permission to transmit radio waves (step S3).
4) Then, communication is started (step S1). During communication, the signal processing function unit 23 is receiving a transmission radio wave from the GPS satellite 40 or is in a standby state.

If the area is a use restricted area (YES in step S3), the signal processing function unit 23 notifies the communication control function unit 13 of prohibition of radio wave transmission. The communication control function unit 13 notifies the call control function unit 12 of outgoing call prohibition (step S5). For example, it notifies the liquid crystal screen of the portable communication device 10 that it is a communication prohibited area. Thereafter, the power supply 11 is turned off (step S6). As a result, transmission of radio waves from the portable communication device 10 is prohibited.

On the other hand, when the signal processing function unit 23 determines that the transmission radio wave from the GPS satellite 40 is not received (NO in step S2), for example, the portable communication device 10 is located inside a hospital building. In the case, the communication control function unit 13
Determines whether the position information transmitted from the position information transmitting device 30 has been received (step S7). When the position information has not been received (NO in step S7), the communication control function unit 13 notifies the transmission / reception control unit 14 of permission of transmission of a radio wave (step S8) because it is outside the use restriction area, and starts communication. (Step S1). During the communication, the communication control function unit 13 receives the position information transmitted from the position information transmitting device 30 or is in a standby state. When the position information is received (YES in step S7), the communication control function unit 13 is in the use restriction area, and the communication control function unit 13
2 is notified of the prohibition of radio wave transmission (step S5),
1 is turned off (step S6). As a result, transmission of radio waves from the portable communication device 10 is prohibited.

(Second Embodiment) Next, a second embodiment of the present invention will be described with reference to the drawings. FIG. 3 shows a block diagram of the second embodiment. The second embodiment is different from the first embodiment in FIG. 1 in that position information of a use-restricted area is obtained from a position information database 60 installed on a network via a base station 50. ing.

In FIG. 1, the location information of the restricted area is stored in the memory function unit 24 of the portable communication device 10 in advance. Storing information increases the required memory size. Further, when the use-restricted area newly increases, the data of the position information must be newly rewritten. Therefore, in the second embodiment, a position information database 60 storing position information of the use-restricted area is installed at a place separated from the portable communication device 10 and connected to a network.
The portable communication device 10 acquires the position information of the position information database 60 via the base station 50. Other operations are the same as those in the flowchart of FIG.

The operation of acquiring position information from the position information database 60 installed on the network according to the second embodiment via the base station 50 will be described in detail with reference to the flowchart of FIG.

From the location information database 60, the base station 50
FIG. 4 is a flowchart showing the operation of acquiring position information via the. Step S1 of the flowchart of FIG.
1 and S12 are steps S1 and S2 in the first embodiment of FIG.
1 and S2, respectively, and the description is omitted. G
When the transmission radio wave is received from the PS satellite 40 (YES in step S12 in FIG. 4), the signal processing function unit 23 detects its own position, and stores the position stored in the communication control function unit 13 from the position information database 60. An instruction is issued to acquire information (step S13). A comparison is made as to whether the use-restricted area (communication prohibited area) acquired from the position information database 60 matches the own position (step S14).
Steps S15, S16, S17 indicating subsequent operations,
Steps S18 and S19 are the same as steps S4, S5, S6, S7 and S8 of the first embodiment in FIG.

In the description of the operation of the first and second embodiments, the antenna 15 and the GPS antenna 2
Although the case has been described in which the antenna 1 is used, an antenna that can be used in common by the portable communication device 10 and the GPS signal processing unit 20 (for example, by switching and using the antenna) may be used. In the above description, since the GPS antenna 21 and the antenna 15 operate independently, the GPS antenna 21 and the antenna 15 may receive the GPS satellite 40 and the position information transmitting device 30 at the same time.

[0030]

The first effect is to provide a communication device system and a portable communication device that can reliably restrict the use of the portable communication device in a specific area (such as a restricted use area). . The reason is that as a communication system system that restricts the use of portable communication devices, GPS
And a position information transmitting device.

A second effect is that even when the portable communication device is in use, if the user enters a specific area, the power supply of the portable communication device can be automatically controlled. The reason is G
This is because the power control of the portable communication device is performed by judging the content of the transmission radio wave from the PS satellite and the position information transmitted from the position information transmitting device.

[Brief description of the drawings]

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

FIG. 2 is a flowchart according to the first embodiment of the present invention.

FIG. 3 is a block diagram showing a second embodiment of the present invention.

FIG. 4 is a flowchart of a second embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Portable communication device 11 Power supply 12 Call control function part 13 Communication control function part 14 Transmission / reception control part 15 Antenna 20 GPS signal processing part 21 GPS antenna 22 GPS receiving part 23 Signal processing function part 24 Memory function part 30 Location information transmission device 31 Signal control unit 32 Transmission / reception control unit 33 Antenna 40 GPS satellite 50 Base station 60 Location information database

Claims (10)

[Claims] When a portable communication device receives a transmission wave from a GPS satellite, the portable communication device receives a transmission wave from the GPS satellite, detects a self-position of the portable communication device, and detects the self-position. When the use-restricted area of the portable communication device stored in advance matches, the power supply of the portable communication device is turned off, and when the portable communication device has not received the transmission radio wave from the GPS satellite, A communication device controllable by a GPS, comprising: receiving position information on the use-restricted area transmitted from a position-information transmitting device installed in the use-restricted area; and turning off the power of the portable communication device. system. 2. When the portable communication device receives a transmission radio wave from a GPS satellite, it receives a transmission radio wave from the GPS satellite, detects a self-position of the portable communication device, and detects the self-position. When the use-restricted area of the portable communication device obtained from the position information database installed at a location separated from the portable communication device matches, the power supply of the portable communication device is turned off, and the portable communication device When the transmission radio wave from the GPS satellite is not received, the portable communication device is powered off by receiving the position information relating to the restricted use area transmitted from the positional information transmitting device installed in the restricted use area. G characterized by
Communication equipment system that can control power supply by PS. 3. Power controllable by a GPS including a portable communication device for receiving a transmission radio wave from a GPS satellite and a position information transmitting device installed in a restricted use area where use of the portable communication device is to be restricted. A communication device system, wherein the portable communication device receives a transmission radio wave from the GPS satellite and detects a self-position of the portable communication device; and the self-position is stored in advance. Comparing means for comparing whether the use-restricted area matches; notification means for notifying prohibition of radio wave transmission when the self-position matches the use-restricted area; and a position transmitted from the position information transmitting device. Receiving information, and transmission and reception control means for transmitting to the notifying means, the position information transmitting device stores the position information on the position where the self is installed in advance, The mobile communication device further includes a position information control unit that transmits the position information, and when the portable communication device is receiving a transmission wave from the GPS satellite, the portable communication device receives a transmission wave from the GPS satellite, and the self-position is determined by the mobile terminal. When the usage coincides with the use restriction area, the mobile communication device is notified of prohibition of radio wave transmission, and the power of the portable communication device is turned off.
When a transmission radio wave from a PS satellite is not received, power of the portable communication device is turned off by receiving the position information transmitted from the position information transmission device, and power control is performed by a GPS. Possible communication equipment system. 4. A power supply controllable by a GPS including a portable communication device for receiving a transmission radio wave from a GPS satellite and a position information transmitting device installed in a restricted use area where use of the portable communication device is to be restricted. A communication device system, which stores the position information of the use-restricted area, a position information database installed at a location separated from the portable communication device, and a base station that transmits position information from the position information database. Furthermore, the portable communication device receives a transmission radio wave from the GPS satellite, and detects a position of the portable communication device.
Memory means for storing the use-restricted area, comparison means for comparing whether the self-position matches the use-restricted area of the memory means, and a radio wave signal when the self-position matches the use-restricted area. Notifying means for notifying transmission prohibition, and transmission / reception control means for receiving position information transmitted from the position information transmitting device, receiving position information from the position information database, and transmitting the received position information to the notifying means, The position information transmitting device includes position information control means for storing position information relating to a position where the device is installed in advance and transmitting the position information, and the portable communication device is stored in the position information database. Acquiring position information on the restricted area via the base station, and the portable communication device receives a transmission radio wave from the GPS satellite If the mobile communication device receives the transmission radio wave from the GPS satellite and notifies the self-position and the use-restricted area obtained from the position information database that the radio wave transmission is prohibited, the power source of the portable communication device is notified. When the portable communication device does not receive the transmission radio wave from the GPS satellite, the portable communication device receives the position information transmitted from the position information transmitting device, thereby turning off the power of the portable communication device. G characterized by cutting
Communication equipment system that can control power supply by PS. 5. The output of a radio wave transmitted from the position information transmitting device is a low output that does not affect devices in the restricted use area.
A communication device system capable of power control by the GPS described in the above. 6. A portable communication device for receiving a radio wave transmitted from a GPS satellite, and when receiving a radio wave transmitted from the GPS satellite, receiving a radio wave transmitted from the GPS satellite, When the self-position matches the pre-stored use-restricted area of the portable communication device, the power of the self-device is turned off, and when the transmission radio wave from the GPS satellite is not received, the use restriction is performed. A portable communication device capable of power control by GPS, comprising receiving position information on the use-restricted area transmitted from a position information transmission device installed in an area and cutting off its own power. 7. A portable communication device for receiving a radio wave transmitted from a GPS satellite, and when receiving a radio wave transmitted from the GPS satellite, receiving a radio wave transmitted from the GPS satellite, When the self-position coincides with the use-restricted area of the portable communication device obtained from the position information database installed at a location separated from the portable communication device, the self-power supply is turned off, and the GPS satellite is turned off. When no transmission radio wave is received from the device, the terminal receives the position information related to the use-restricted area transmitted from the position-information transmitting device installed in the use-restricted area and turns off its own power. A portable communication device whose power can be controlled by GPS. 8. A portable communication device for receiving a radio wave transmitted from a GPS satellite, comprising: self-position detecting means for receiving a radio wave transmitted from the GPS satellite and detecting a self-position of the portable communication device; Comparing means for comparing whether the self-position matches a pre-stored use-restricted area in which use of the portable communication device is to be restricted, and prohibiting transmission of radio waves when the self-position matches the use-restricted area Notification means, and transmission / reception control means for receiving position information transmitted from a position information transmission device installed in the use-restricted area and transmitting the position information to the notification means, and receiving transmission radio waves from the GPS satellites. If the mobile station receives the transmitted radio wave from the GPS satellite, detects the self-position, and notifies the mobile phone of the prohibition of radio wave transmission when the self-position coincides with the restricted area. Shut off its own power supply and, if it does not receive a transmission radio wave from the GPS satellite, receive position information on the use-restricted area transmitted from the position information transmission device and turn off its own power supply. A portable communication device capable of power control by GPS. 9. A portable communication device for receiving a radio wave transmitted from a GPS satellite, comprising: self-position detecting means for receiving a radio wave transmitted from the GPS satellite and detecting a self-position of the portable communication device; Memory means for storing a use-restricted area of the portable communication device, comparing means for comparing whether the self-position matches the use-restricted area in the memory means, and the self-position is the use-restricted area. Notifying means for notifying the prohibition of transmission of radio waves when they match each other, and receiving the position information transmitted from the position information transmitting device installed in the use restricted area and the position information installed in a place away from the portable communication device Transmission / reception control means for receiving position information on the use-restricted area from a database and transmitting the position information to the notification means, and transmitting a transmission radio wave from the GPS satellite. If it is received, it receives the transmission radio wave from the GPS satellite, detects the self-position, and notifies the transmission prohibition of the radio wave when the self-position coincides with the use restricted area obtained from the position information database. And cuts off its own power by receiving the position information transmitted from the position information transmitting device when the transmission radio wave from the GPS satellite is not received. A portable communication device whose power can be controlled by GPS. 10. The output of a radio wave transmitted from the position information transmitting device is a low output that does not affect devices in the restricted use area.
A portable communication device capable of power control by the described GPS.