JP2004354095A - Communication device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent a traffic accident by watching position information displayed during driving. <P>SOLUTION: A control circuit makes, on receipt of position information A, a timer A start counting in step S3; calculates the distance between two positions, when acquisition of position information B is determined in step S4, from two pieces of position information stored in step S10; calculates the moving speed of the communication device from the calculated distance and the value counted by the timer A, or from the time necessary for movement between the two positions; and prohibits the display of position information when it is determined that the moving speed is a predetermined speed or more. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a communication device.
[0002]
[Prior art]
In recent years, a car navigation system equipped with a GPS (Global Positioning System) function has been commercialized.
[0003]
In a car navigation system equipped with a GPS function, a terminal such as a car navigation receives GPS data from an artificial satellite (GPS satellite), and the terminal converts the received GPS data into data such as longitude, latitude, and altitude. . The terminal can display the current position on the display unit based on the converted information such as longitude and latitude.
[0004]
By using such a GPS function, the driver of the car can know the current position and the route to the destination from the position information displayed on the display unit.
[0005]
In addition, portable telephone devices equipped with such a GPS function have been commercialized, and many technologies relating to portable telephone devices having a GPS function have been proposed. For example, a technique has been proposed in which information on the current position is acquired from a satellite using a GPS function, and information related to the current position is received via the Internet (see Patent Document 1).
[0006]
[Patent Document 1]
JP-A-2001-264101 (pages 3 to 4 and FIG. 1).
[0007]
[Problems to be solved by the invention]
By using such a telephone device having the GPS function, the user can easily know the current position. For this reason, it is conceivable to use a mobile phone with a GPS function instead of car navigation. When such a mobile phone with a GPS function is used in place of a car navigation, for example, the mobile phone is inserted into a drink holder in the car, and a user looks at position information displayed on a display unit of the mobile phone. Can be considered. However, the display of the mobile phone is very small and hard to see. There is no problem if the user looks at the display of the mobile phone while stopped in a parking area or the like, but looking at the display of the mobile phone with a small screen while driving is very dangerous and a traffic accident may occur. The danger is great.
[0008]
[Means for Solving the Problems]
The present invention is intended to solve such a problem, and a communication device according to claim 1 is a communication device capable of receiving a signal from a satellite and displaying current position information based on the received signal. The communication device, the speed calculating means for calculating the moving speed based on the received signal, display means for displaying position information, and when it is determined that the speed calculating means has calculated a speed equal to or greater than a predetermined, the And control means for controlling display of the acquired position information on display means.
[0009]
The communication device according to claim 2 is a communication device capable of receiving a signal from a satellite and displaying current position information based on the received signal, wherein the communication device includes a plurality of communication devices acquired from the received signal. Speed calculating means for calculating a moving speed of the communication device from two pieces of position information of the position information and a time required to move between the two positions; display means for displaying position information; When the means determines that the predetermined speed has been calculated, the control means controls to prohibit displaying the position information on the display means.
[0010]
The communication device according to claim 3, wherein the communication device is a communication device capable of receiving a signal from a satellite and displaying current position information based on the received signal, wherein the communication device has a moving speed based on the received signal. A speed calculating means for calculating the position information, a display means for displaying position information, and when the speed calculating means calculates a speed equal to or higher than a predetermined value, the display means is prohibited from displaying the position information. When the speed calculating means determines that the speed lower than the predetermined speed has been continuously calculated for a predetermined time, the control means controls the display means so as to display the position information.
[0011]
The communication device according to claim 4 is the communication device according to any one of claims 1 to 3, wherein the communication device further includes a sound notification unit that notifies position information by voice, and the control unit controls the position on the display unit. When performing control so as to prohibit displaying information, the notifying unit notifies the positional information by voice.
[0012]
A communication device according to a fifth aspect is the communication device according to the first to fourth aspects, wherein the control unit displays position information on the display unit when the control unit determines that the speed calculation unit has calculated a predetermined speed or more. And controlling the display means to display a message indicating that the current position information cannot be displayed on the display means.
[0013]
The communication device according to claim 6 is the communication device according to claims 1 to 5, wherein the control unit, when determining that the acquired position information is on a train line, displays the position information on the display unit. The display is controlled.
[0014]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment apparatus to which the present invention is applied will be described.
[0015]
FIG. 1 is a front perspective view of a communication device (for example, a mobile phone device with a GPS function) that is the device of the present embodiment.
[0016]
The communication device of the present embodiment is a foldable mobile phone device, and as shown in FIG. 1, a first housing 110 and a second housing 120 are rotatably connected via a hinge portion, The first housing 110 or the second housing 120 can be opened and closed in the arrow direction in FIG.
[0017]
Further, the first housing 110 has a main display unit 15 composed of, for example, a liquid crystal display device. The main display unit 15 receives an input from an input unit 17 described later when making a call. A telephone number, information on the calling side at the time of an incoming call (name and telephone number of the calling side, etc.), current time, current position information of the mobile phone, and the like are displayed.
[0018]
On the other hand, the second housing 120 has an input unit 17 including various keys such as a numeric keypad, a call key, an off key, and a function key.
[0019]
FIG. 2 is a rear perspective view of the mobile phone device shown in FIG. 1, and a sub-display unit 16 made of, for example, a liquid crystal display device is arranged in the first housing 110. The sub-display unit 16 displays information on the calling side (for example, a telephone number and name) at the time of an incoming call, and can also display position information of the terminal.
[0020]
In addition, when the mobile phone device is opened, the user can see the main display unit 15, but when the mobile phone is closed, the user cannot see the main display unit 15 and sees only the sub display unit 16. It is possible.
[0021]
The second housing 120 illustrated in FIG. 2 has the antenna 2 and the imaging unit 18 formed of, for example, a CCD (Charge Coupled Device).
[0022]
The communication device of the present embodiment has a GPS antenna (not shown) inside the housing (or inside the antenna 2), but the GPS antenna is exposed to the outside in order to increase the receiving sensitivity. It may be mounted on a communication device.
[0023]
FIG. 3 is a block diagram of the apparatus of this embodiment.
[0024]
The telephone communication unit 1 transmits a signal from a baseband unit 3 described later to the base station via the antenna 2 and receives a radio wave from the base station via the antenna 2.
[0025]
The baseband unit 3 includes a CDMA processing circuit 31 and an audio codec 32. The CDMA processing circuit 31 performs code division multiple access, scrambling, error control, and timing detection. The audio codec 32 compresses (encodes) and expands (decodes) the audio, performs analog-to-digital conversion, and changes the reception volume and microphone sensitivity by an internal amplifier circuit (not shown).
[0026]
The speaker 4 used for transmitting and receiving the voice converts the electric signal of the baseband unit 3 amplified by the amplifier circuit 5 into a voice. The microphone 6 used in transmission and reception converts voice into an electric signal. The amplification circuit 7 amplifies the output of the microphone 6 and outputs it to the baseband unit 3.
[0027]
The speaker 8 converts the electric signal of the baseband unit 3 amplified by the amplifier circuit 9 into a sound. The speaker 8 also sounds an incoming call notification.
[0028]
The switching circuit 10 turns ON / OFF the connection between the three respective amplifier circuits 5, 7, 9 and the baseband unit 3 under the control of the control unit 11 described later. Note that these three amplifier circuits 5, 7, and 9 have fixed gains, and cannot change the reception volume or microphone sensitivity. The voice codec 32 of the baseband unit 3 changes the reception volume and microphone sensitivity under the control of the control unit 11.
[0029]
The control unit 11 controls each unit based on a system program stored in a first storage unit 12 composed of, for example, a ROM (Read Only Memory). The control section 11 has two timers A and B.
[0030]
The second storage unit 13 includes, for example, a flash memory, has two areas (area A and area B) for storing two pieces of position information (position information A and position information B), and stores a flag.
[0031]
The flag is a flag indicating whether or not the position information is not displayed on the display unit. When the flag is off, the position information is displayed on the display unit, and when the flag is on, the position information is not displayed on the display unit.
[0032]
The third storage unit 14 is composed of, for example, a ROM (Read Only Memory), and indicates a voice message for notifying the user of the position information (for example, indicates a course to be followed, such as “Please turn right at the next corner”). And a voice message indicating the current position, such as "The current position is 1-chome, Otsu-shi, Shiga Prefecture".
[0033]
The main display unit 15 and the sub display unit 16 are composed of, for example, a liquid crystal display device.
[0034]
The input unit 17 includes various keys such as a numeric keypad, a call key, a function key, an off key, and an instruction key for displaying position information.
[0035]
The imaging unit 18 is composed of, for example, a CCD (Charge Coupled Device).
[0036]
The image processing unit 19 performs compression processing and the like on the image information input from the imaging unit 18 and transmits the image information to the control unit 11.
[0037]
The opening / closing detection unit 20 detects whether the housing of the communication device has been opened.
[0038]
4 and 5 are flowcharts showing the operation of the apparatus of the present embodiment.
[0039]
Hereinafter, the operation of the apparatus of this embodiment will be described with reference to FIGS.
[0040]
Before the control unit 11 processes the step S1 in FIG. 4, the control unit 11 performs, for example, the current position of the communication device as shown in FIG. It is assumed that the map is displayed on the main display unit 15 or the sub display unit 16. It is also assumed that the flag stored in the third storage unit 13 is off.
[0041]
In step S1 of FIG. 4, when the control unit 11 determines that the GPS receiving unit 17 has received the position information, the control unit 11 proceeds to step S2.
[0042]
In step S2, the control unit 11 stores the position information (referred to as position information A) received in step S1 in the area A of the second storage unit 13, and proceeds to step S3.
[0043]
In step S3, the control unit 11 causes the timer A stored inside the control unit 11 to start counting, and proceeds to step S4.
[0044]
In step S4, when the control unit 11 determines that the GPS receiving unit 17 has received the position information, the control unit 11 proceeds to step S5.
[0045]
In step S5, the control unit 11 determines whether or not the position information A is stored in the second storage unit 13. Specifically, if the control unit 11 determines that the position information A is stored in the area A of the second storage unit 13, the process proceeds to step S8, and if not, the process proceeds to step S6.
[0046]
In step S6, the control unit 11 stores the position information received in step S4 in the area A of the second storage unit 13, and proceeds to step S7.
[0047]
In step S7, the control unit 11 causes the timer A to start counting time, and returns to step S4.
[0048]
The reason that the timer A was started to measure time in the steps S3 and S7 is that when calculating the speed of the communication device from the two position information and the travel time between the two positions in the step S10 described later, This is because the moving time, that is, the time measured by the timer A is required.
[0049]
In step S8, the control unit 11 stores the position information received in step S4 (here, position information B) in the area B, and proceeds to step S9.
[0050]
In step S9, the control unit 11 stops the timer A that has started counting in step S3 or S7, clears the counted value, and proceeds to step S10.
[0051]
In step S10, the control unit 11 stores the position information A stored in the area A of the second storage unit 13 in step S6 (or step S2) and the position information A stored in the area B of the second storage unit 13 in step S8. The speed is calculated from the position information B and the time measured from the step S3 or S7. Specifically, the control unit 11 calculates the distance between the two points of the position information A and the position information B, and calculates the time required to move the distance from the position information A to the position information B ( The moving speed of the communication device is calculated by dividing by the time measured by the timer A). After that, the control unit 11 proceeds with the process to step S11 (FIG. 5).
[0052]
As described above, in steps S1 to S10, it is possible to calculate the moving speed of the communication device from the two position information and the moving time between the two positions.
[0053]
In step S11 of FIG. 5, if the control unit 11 determines that the speed calculated in step S10 (FIG. 4) is equal to or higher than a predetermined speed (for example, 40 km / h), the control unit 11 proceeds to step S12. If not, the process proceeds to step S19.
[0054]
The reason why it is determined in step S11 whether the speed is 40 km / h or more is because the speed at which the user moves by car is approximately 40 km / h or more. In step S11, the user may be able to set a numerical value such that the speed to be determined is, for example, 60 km / h or more, or 30 km / h or more.
[0055]
In step S12, when the control unit 11 determines that the flag stored in the second storage unit 13 is on, the process proceeds to step S17, and otherwise, proceeds to step S13.
[0056]
In step S13, when the control unit 11 detects a signal indicating that the housing is open from the open / close detection unit, the control unit 11 proceeds to step S14. Otherwise, the control unit 11 proceeds to step S15.
[0057]
In step S14, the control unit 11 controls so that the position information is not displayed on both the main display unit 15 and the sub display unit 16, and based on the position information received from the GPS receiving unit 17, a voice message indicating the current position. From the third storage unit 14 and output from the speaker 8 via the switching circuit 10 and the amplifier 9. After that, the control unit 11 proceeds to step S16.
[0058]
In step S15, the control unit 11 controls the sub-display unit 16 so that the position information is not displayed and, based on the position information received from the GPS receiving unit 17, sends the voice message indicating the current position from the third storage unit 14 The data is read and output from the speaker 8 via the switching circuit 10 and the amplifier 9. After that, the control unit 11 proceeds to step S16.
[0059]
Note that the user may be notified of not only the current position but also a route to the destination by a voice message.
[0060]
The control in steps S14 and S15 is performed because the position information is displayed only on the sub-display unit 16 when the housing is closed, and the position information is displayed on the sub-display unit 16 when the housing is open. This is because it is displayed on both the main display unit 15.
[0061]
In steps S14 and S15, the display unit does not display the position information, and a message indicating the reason why the position information cannot be displayed, for example, "currently driving! Cannot be displayed!" It may be displayed. With such a configuration, since the position information is not displayed when the user looks at the display unit, it is possible to avoid a situation in which the user assumes that the communication device has failed or the battery has run out. .
[0062]
In step S16, the control unit 11 turns on the flag stored in the second storage unit 13, and proceeds to step S17.
[0063]
In step S17, if the control unit 11 determines that the timer B is counting, the process proceeds to step S18, and if not, the process returns to step S4 shown in FIG.
[0064]
In step S18, the control unit 11 clears the timer B, and returns the processing to step S4 shown in FIG.
[0065]
The timer B is used to count whether or not the communication device is moving at a speed of less than 40 km / h continuously for a predetermined time or more. Therefore, when the moving speed of the communication device becomes 40 km / h or more, the timer B is used. Stop the timing of B and clear the count value.
[0066]
In step S19, if the control unit 11 determines that the flag stored in the second storage unit 13 is ON, the process proceeds to step S20, and otherwise returns to step S4 shown in FIG.
[0067]
In step S20, if the control unit 11 determines that the timer B is counting time, the process proceeds to step S22; otherwise, the process proceeds to step S21.
[0068]
In step S21, the control unit 11 causes the timer B to start measuring time, and proceeds to step S22.
[0069]
The reason why the timer B is started in step S21 is that the moving speed of the communication device is from 40 km / h or more to less than 40 km / h and the moving speed is continuously less than 40 km / h for a predetermined time or more. This is because it is determined in step S22 to be described later.
[0070]
In step S22, when the control unit 11 determines that the timer B has finished measuring a predetermined time (for example, one minute), the control unit 11 proceeds to step S23, and otherwise proceeds to step S4 in FIG.
[0071]
In step S23, the control unit 11 controls the display unit to display the position information, and proceeds to step S24.
[0072]
In step S23, the position information displayed on the display unit may be position information received from a satellite, or may be position information calculated on the communication device side based on information received from a satellite.
[0073]
Further, the reason why the control unit 11 determines whether or not the timer B has counted a predetermined time in the step S22 may be, for example, that the user temporarily stops at a traffic light or the like while moving by car. In this case, if the position information is immediately displayed on the display unit, the user cannot concentrate on driving. However, even if the user stops, the position information is not displayed until the stopped state or the state where the user is moving at a speed lower than the predetermined speed does not elapse after a predetermined time, so that the user can concentrate on driving. Is possible.
[0074]
Further, the predetermined time in step S22 is, for example, 1 minute, but the user may be able to set the predetermined time.
[0075]
In step S24, the control unit 11 turns off the flag stored in the second storage unit 13, stops counting the time of the timer B, clears the count of the timer B, and returns to the step S4 shown in FIG. .
[0076]
As described above, in steps S11 to S24, if the communication device is moving at a moving speed of a predetermined time or more and less than 40 km / h or is stopped, it is possible to display the position information on the display unit. It is possible.
[0077]
As described above, in the present embodiment, the moving speed is calculated from the two position information and the moving time between the two positions, and if the calculated speed is equal to or higher than the predetermined speed, the position is displayed on the display unit. Displaying information is prohibited. By adopting such a configuration, it is possible to prevent a traffic accident from occurring when the user drives while looking at the small screen of the mobile phone, for example.
[0078]
Also, while the display of the position information is prohibited, the user is notified of the current position and the route to the destination by voice, so that the user can know where the current position is.
[0079]
Furthermore, when the communication device moves at a speed less than the predetermined speed or stops for a predetermined time or more, the position information is displayed on the display unit. It is possible to see location information. Further, with such a configuration, when the vehicle on which the communication device is mounted is stopped for a short time at a traffic light or the like, the position information can be prevented from being displayed on the display unit as much as possible. For this reason, it is possible to create an environment in which the user can concentrate on driving as much as possible even when the vehicle is stopped.For example, by viewing the position information displayed by the user while the vehicle is stopped such as at a traffic light, the signal changes from red to blue. It is possible to avoid as much as possible, for example, a horn being sounded by the following vehicle without notice of the change or a sudden transmission operation when suddenly noticing that the signal has changed, for example, causing an engine stall.
[0080]
In this embodiment, the present invention is applied to a mobile phone. However, the present invention can be applied to a portable information terminal such as a PDA (Personal Digital Assistants) or a car navigation system.
[0081]
Further, in the present embodiment, the position information is not displayed on the display unit when moving at a predetermined speed or more, but, for example, when the user is on a train or the like, the user is displayed on the display unit. There is no problem even if the user sees the displayed position information, and in such a case, if the position information is not displayed on the display unit, it may be inconvenient. In order to avoid such a situation, for example, the route information of the train is stored in a communication terminal or the like in advance, and the communication device refers to the route information to determine whether the communication device is present in the train. If it is determined that the communication device is in the train, the position information may be displayed on the display unit even if the communication device is moving at a predetermined speed or higher.
[0082]
Further, the communication device receives the route information from the server, and the communication device determines whether the communication device is currently on the route, or the server calculates the moving speed of the communication device and moves to the communication device. It may be configured to notify the speed.
[0083]
Further, since the time data is included in the data received from the GPS satellites, it is needless to say that this time information may be used in place of the time information measured by the timer A of this embodiment.
[0084]
【The invention's effect】
By viewing the position information displayed on the display unit of the communication device while the user is driving, it is possible to prevent an accident from occurring.
[Brief description of the drawings]
FIG. 1 is a front perspective view of an apparatus according to an embodiment of the present invention.
FIG. 2 is a rear perspective view of the apparatus according to the embodiment to which the present invention is applied.
FIG. 3 is a block diagram of the apparatus according to the embodiment.
FIG. 4 is a flowchart showing the operation of the apparatus of the embodiment.
FIG. 5 is a flowchart showing the operation of the apparatus of the embodiment.
FIG. 6 is a diagram illustrating a display mode of a display unit of the apparatus according to the embodiment.
[Explanation of symbols]
1 Communication Unit 11 Control Unit 13 Second Storage Unit 14 Third Storage Unit 15 Main Display Unit 16 Sub Display Unit 17 GPS Receiver

Claims (6)

A communication device that can receive a signal from a satellite and display current position information based on the received signal,
The communication device, a speed calculating means for calculating a moving speed based on the received signal, a display means for displaying position information, and the display means when it is determined that the speed calculating means has calculated a speed equal to or more than a predetermined speed Control means for controlling display of the acquired position information to be prohibited. A communication device that can receive a signal from a satellite and display current position information based on the received signal,
A speed calculator configured to calculate a moving speed of the communication device from two pieces of position information of the plurality of pieces of position information acquired from the received signal and a time required to move between the two positions; Display means for displaying position information; and control means for controlling so as to prohibit display of the position information on the display means when the speed calculation means determines that the predetermined speed has been calculated. A communication device characterized by the above-mentioned. A communication device that can receive a signal from a satellite and display current position information based on the received signal,
The communication device, a speed calculating unit that calculates a moving speed based on the received signal, a display unit that displays position information,
When the speed calculating means calculates a speed equal to or higher than a predetermined speed, display of the position information is prohibited on the display means. And a control means for controlling the display means so as to display the position information when it is determined that the calculation has been performed. A communication device according to claim 1, wherein
The communication device further has a voice notification unit that notifies the position information by voice,
A communication device, wherein when the control unit controls to prohibit displaying the position information on the display unit, the notifying unit notifies the position information by voice. A communication device according to claim 1, wherein:
If the control means determines that the speed calculation means has calculated a predetermined speed or more, the control means prohibits displaying the position information on the display means and indicates that the current position information cannot be displayed on the display means. A communication device that controls the display so as to display a message. A communication device according to claim 1, wherein:
The communication device according to claim 1, wherein the control unit controls the display unit to display the position information when the obtained position information is determined to be on a train line.

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