JP3721082B2 - Device for disconnecting portable terminal power supply and method for disconnecting the same - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
  The present invention relates to a mobile terminal power supply disconnecting device and a method for disconnecting the mobile terminal power supply, and more particularly to a mobile terminal power supply disconnecting device for turning off the power supply in a train and the disconnecting method thereof.
[0002]
[Prior art]
  With the widespread use of mobile communication networks, the number of portable mobile communication terminals that have a wireless unit and perform various functions and perform wireless communication is rapidly increasing. Although a small portable mobile communication terminal has an advantage that it is easy to carry, radio waves generated during communication have an adverse effect on persons with disabilities who use pacemakers and the like. In the worst case, possessing a terminal in a crowded train may kill the disabled. Turning off the terminal without fail in the train can be done even if it is troublesome, but it is impossible to avoid forgetting to turn off the power. Turning off the power when boarding a train impairs the convenience of a portable terminal having various functions other than communication.
[0003]
  As a technology for automatically turning off the power when riding a train, it may be proposed to equip a portable terminal with GPS for checking the moving speed and confirming the position, and a memory for storing map data. It is desirable to avoid installing such a technology in a portable terminal that is strongly required to be integrated.
[0004]
  Regardless of the intention of the owner of the portable terminal when boarding the train, it is required that the power of the portable terminal, particularly the power relating to the wireless communication function, can be automatically cut off. Furthermore, it is desired that the automatic disconnection function operates without placing an equipment burden on the mobile terminal and the station side.
[0005]
[Problems to be solved by the invention]
  An object of the present invention is to provide a mobile terminal power supply disconnecting device capable of automatically disconnecting the power supply of the mobile terminal, in particular, the power relating to the wireless communication function, regardless of the intention of the mobile terminal owner when riding the train, and its It is to provide a cutting method.
  It is another object of the present invention to provide a mobile terminal power supply disconnecting device capable of operating the automatic disconnecting function without applying a facility burden to the mobile terminal and the station side, and a disconnecting method thereof. .
[0006]
[Means for Solving the Problems]
  Means for solving the problem is expressed as follows. Technical matters appearing in the expression are appended with numbers, symbols, etc. in parentheses. The numbers, symbols, and the like are technical matters constituting at least one embodiment or a plurality of embodiments of the present invention, or a plurality of embodiments, in particular, the embodiments or examples. This corresponds to the reference numbers, reference symbols, and the like attached to the technical matters expressed in the drawings corresponding to. Such reference numbers and reference symbols clarify the correspondence and bridging between the technical matters described in the claims and the technical matters of the embodiments or examples. Such correspondence or bridging does not mean that the technical matters described in the claims are interpreted as being limited to the technical matters of the embodiments or examples.
[0007]
  The mobile terminal power disconnection device according to the present invention includes a wireless unit (2) that performs wireless transmission and reception, and an acquisition unit (6) that acquires a change in the reception level of radio waves transmitted from the base station (26-2). And a determination unit (7) for determining that the moving speed of the train moving in unison with the wireless unit (2) corresponding to the change amount exceeds the set reference value, and the wireless unit (2) based on the determination The power supply control unit (3) to turn off the power supplied to the power supply (it may be lowered to the extent that no adverse effects occur, and is substantially turned off);And a storage unit (14) for storing train time information (15). The time of determination by the determination unit (7) is represented by T1, and the arrival time at the next station of the train obtained based on the train time information (15) is represented by T2. And At this time, the power supply control unit (3) turns off the power supplied to the wireless unit (2) for a time ΔT: ΔT = T2−T1 expressed by the following equation.
  In the most part of the time of train movement, the wireless unit (2) is substantially in a power failure state, and no harmful radio waves are emitted. ON / OFF control of such wireless unitsIn the case where there is an accident on the route and the train operation time is not performed according to the timetable, the ON state may continue improperly. Is done. Specifically, the above time ΔT is estimated from the arrival time T2 obtained from the train time information (15) and the train travel start time T1 that can be physically measured, and the estimated time ΔT is calculated. Only the wireless unit (2) is substantially in a power outage state. When the train is not moving, the power of the wireless unit (2) is automatically restored to the ON state. The user's loss caused by turning off the power is effectively and minimized.
[0008]
  The portable terminal power supply disconnecting apparatus according to the present invention further includes a determination unit (8). The determination unit (8) determines whether the determination time T1 by the determination unit (7) and the departure time of the train are within a predetermined set time range. When the determination unit (8) determines that the determination time T1 and the departure time are within the set time range, the power supply control unit (3) turns off the power.
[0009]
  The train time information (15) is received via the wireless unit (2). The train time information (15) is the train time information of the route (35-1, 2) in the base station area (27-2) to which the base station (26-2) where the wireless unit exists belongs, and the current time It is preferable that it is partial operation information in a time zone close to the time. Since unnecessary operation information is not acquired, the memory capacity of the storage unit (14) can be reduced.
[0010]
  The power supply control unit (3)ΔTAfter the time based on the elapses, the power supplied to the wireless unit (2) is restored to the original state.After the power is restored, the determination unit (7) determines again that the moving speed of the train exceeds the set reference value. The power supply control unit (3) repeatedly executes an operation to turn off the power every time the determination unit (7) makes a determination.Unless you get off the trainElectricThe alternating control of ON / OFF of the source is continued. Since the physical measurement of the movement / departure of the train is performed based on a speed of about 20 km / h, the traveling of the train can be easily distinguished from walking.
[0011]
  The portable terminal power-off method according to the present invention includes the following chain steps.A chain step means a combination of a plurality of steps. That is, the portable terminal power-off method according to the present invention is as follows.Judge that the speed of the mobile device exceeds the set speed value based on the reception level of the received radio waveStepAnd determineStepThe power supplied to the wireless unit (2) of the mobile terminal is turned off based onStepAnd.This cutting method isObtain train operation information (15) via wireless unit (2)StepFurther equippedThe here,Based on the operation information (15), from the time required for the train between the first specific station (37) and the second specific station (39) which is the next station of the first specific station (37), the first specific station ( The difference time obtained by subtracting the time from the departure time of the train 37) to the determination time for determination is the time for turning off the power.
[0012]
  Method for cutting off mobile terminal power supply according to the present inventionSet the train modeStepIs further provided. Set the train modeStepOn the basis of the,Step for determining aboveIs executed. The setting of the train mode is not limited to when the train enters the station, and can be set permanently. Even if the train mode is set, the terminalUnless moving with high-speed moving objectsIn a normal time zone such as when stopping or walking, the transmission / reception function of the terminal is not lost.
[0013]
  Method for cutting off mobile terminal power supply according to the present inventionTurn off the powerStepA signal to receive the answering machine service is transmitted via the wireless unit (2) in advance of time.The method further includes a step.The user's loss caused by turning off the power is virtually completely eliminated. The operation information (15) can be acquired when setting the train mode.
[0014]
  With such ON / OFF control, the wireless function is not operated while riding on the train, and the disabled person who uses the pacemakerAdverse effectA mode that does not give a value can be set automatically. In that mode, only the power supply of the wireless function is cut off, so functions other than communication can be used. There is no need for storage memory to store information such as GPS and map data for moving speed judgment and position confirmation so that the power is automatically turned off when you get on the train.The Therefore, Miniaturization and weight reduction of portable mobile communication terminalsAlmost no restrictions.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
  In FIG.The portable terminal used in the embodiment of the portable terminal power supply disconnecting apparatus according to the present invention is provided with an antenna and a wireless communication power supply together with a wireless communication unit. As shown in FIG. 1, the antenna 1 is bidirectionally connected to the wireless communication unit 2, and the power supply unit 3 is connected to the wireless communication unit 2 to supply power to the wireless communication unit 2. it can. The antenna 1 performs transmission / reception with a radio signal.
[0016]
  The wireless communication unit 2 is connected to the baseband processing unit 4 in both directions. In the baseband processing unit 4, modulation / demodulation of the input radio signal and the output radio signal is performed. The wireless communication unit 2 is connected to the reception level determination unit 5. In the reception level determination unit 5, the reception level is measured. The reception level determination unit 5 is connected to the level change amount acquisition unit 6. The level change amount acquisition unit 6 periodically and repeatedly acquires the reception level change amount between two different times based on the reception level measurement result measured by the reception level determination unit 5.
[0017]
  The level change amount acquisition unit 6 is connected to the movement speed determination unit 7. The moving speed determination unit 7 is a portable terminal when the received level change amount acquired by the level change amount acquisition unit 6 exceeds the set reference value.Moving withIt is determined that the speed state of the train is “high speed”, and when the received level change amount does not exceed the set reference value, it is determined that the speed state is “low speed”. The level change amount acquisition unit 6 compares the two reception levels determined by the reception level determination unit 5 at the first timing and the second timing after the set time has elapsed from the first timing, and is the difference between the two reception levels. Determine the amount of reception level change described aboveThe The level change amount acquisition unit 6 thenTime interval longer than the set timeso,ChronologicallyReceive level changeRepeat to find out. The level of the received radio wave varies with the travel (high speed movement) of the train on which the terminal owner is riding. As the train speed increases, the amount of change in reception level increases.
[0018]
  The moving speed determination unit 7 is connected to the MCPU 8. The MCPU 8 is a circuit that controls functional operations. A clock circuit 9 is connected to the MCPU 8. The clock circuit 9 is used for calculating an operation timing clock and time information. The MCPU 8 has a built-in train information management unit 11. The train information management unit 11 manages train information and base station area information in the base station area communicating at the current time.
[0019]
  A train mode memory 12 is connected to the train information management unit 11. The train mode memory 12 stores a mode signal 13 indicating whether or not to turn off the power of the wireless unit when riding on the train..The train mode is a mode in which the power supply of the wireless unit is turned off when the train rides. A train time information memory 14 is connected to the train information management unit 11. The train time information memory 14 stores train time information 15 read from the MCPU 8 side. A base station information memory 16 is connected to the train information management unit 11. The base station information memory 16 stores base station area information 17 read from the MCPU 8 side.
[0020]
  The wireless unit OFF time calculating unit 18 calculates a power OFF duration time ΔTx (sec) during which the wireless communication unit 2 is turned OFF. The wireless unit OFF time counting unit 19 uses the clock circuit 9 to count the power supply OFF duration time ΔTx calculated and determined by the wireless unit OFF time calculating unit 18 from the count start time. The current time counting unit 21 uses the clock circuit 9 to count the time from the current count start time to the current time.
[0021]
  The power supply 22 is a power supply that distributes power to the entire terminal, and supplies power to the power supply unit 3. The power supply unit 3 supplies power to the wireless communication unit 2 and the MCPU 8. A user IF unit 24 to which the keyboard 23 is connected is connected to the MCPU 8. The user IF unit 24 is a circuit unit that recognizes an input signal of a keyboard 23 having a plurality of key buttons and transmits the input signal 25 to the MCPU 8.
[0022]
  FIG. 2 shows a system block of the embodiment of the portable terminal power-off device according to the present invention. Four base stations 26-1 to 26-4 are illustrated and arranged.Each of the areas 27-1 to 4 corresponds to overlap with the base stations 26-1 to 26-4.A radio telephone exchange 30 is wirelessly connected to the base stations 26-1 to 4-4 in both directions.
[0023]
  The radio telephone exchange 30 is connected to the answering machine service system 28 in both directions. A train time information management system 29 is connected to the radio telephone exchange 30 in both directions. The train time information management system 29 includes a control unit 31, a train time information storage unit 32, and a train time information calculation unit 33. The train time information storage unit 32 and the train time information calculation unit 33 are bidirectionally connected to the control unit 31, respectively.
[0024]
  The train time information storage unit 32 stores operation information formed from station / track / departure time / stop time / required time information in each base station area. The control unit 31 controls the operation of each of the plurality of units in the train time information management system 29. The train time information management system 29 reads the operation information from the train time information storage unit 32 and uses the time when the terminal communicates with the base station as a reference.TheIn a certain time rangeInformation is selected from operation information as partial operation information.Thus, since the amount of information in the train time information storage unit 32 corresponding to the base station area is large, a small amount of data can be selected only within an appropriate time range. The control unit 31 transmits the specific base station area information, which is the selected partial operation information, to the corresponding base station 26-2 communicating at the current time.
[0025]
  A first railroad track 35-1 and a second railroad track 35-2 run between the areas of the plural areas 27-1 to 27-4, and six stations 36 to 42 are located in the plural areas 27-1 to 27-4. Exists. When the train 43 on which the terminal owner is boarding departs from the station 37 in the area 27-2 to which the base station 26-2 belongs, the terminal determines its own moving speed. If the terminal determines that its movement state is “high speed (moving on the train)”, the terminal inquires about the train time information of the stations in the area from the base station 26-2. If the train time information management system 29 has a request to provide the information from the base station 26-2, the train time information management system 29 will connect the station 37 and the station in the area 27-2 corresponding to the base station 26-2. 38 partial operation information as described above is transmitted to the terminal via the base station 26-2.
[0026]
  High-speed determination time when the terminal is determined to be “high-speed”(Hereinafter referred to as T1)When,DDeparture time when train 43 departs from stations 37 and 38 in rear 27-2(Hereinafter referred to as T0)Compare withTo do. Here, the departure time T0 isReceived from base station 26-2Partial service information NewsIt is the time obtained from Fast judgment timeT1And its departure timeT0And are within the set time range (high-speed judgment timeT1And its departure timeT0) And generally match)The deviceThe power of the wireless communication unit 2 is turned off. Departure time at station 37T0And station 38 departure timeT0If both times are the same or approximate, the power-off state is controlled for both routes. Departure time of station 37 and station 38T0The time it takes to travel to the nearest stop(Hereinafter referred to as arrival time T2)To fast judgment timeT1Minus the time(T2-T1)Is estimated to be the time that the train should be movingThe Therefore, the terminal calculates the estimated travel time ΔTx (ΔTx = T2−T1) as the time during which the train should surely move. The estimated movement time ΔTx can be rewritten as ΔTx = (T2−T1) − (T1−T0). At this time, (T2-T1) indicates the difference between the arrival time T2 and the departure time T0, that is, the time between stations. Further, (T1-T0) indicates the time from the departure time T0 to the high speed determination time T1.
[0027]
  Partial flight information is illustrated as follows:
Station 37-> Station 39: 10 minutes
Station 37-> Station 36: 11 minutes
Station 38 → Station 41: 7 minutes
Station 38-> Station 42: 13 minutes
Fast judgment timeT1Faster time than past timeT1Departure time closest toT0Is the departure time of station 37, the departure timeT0High-speed judgment time from (time obtained from partial flight information)T1Time until (physically measured time)(T1-T0)Is determined to be 2 minutes,The estimated travel time ΔTx is8 minutes (ΔTx =(T2-T1)-(T1-T0)= 10-2). hereThe station-to-station time (T2-T1) selected is10 minutes from station 37 to station 39Not limited to.For example, the 10 minutes closest to the average of four station times of 10, 11, 7, and 13 minutes is adopted.May be. High-speed judgment is when the train speed reaches a speed of about 20 km / h.Is preferable.The above two minutes are actuallyFrom the train operation statistics ofIt can be replaced with a shorter time. In this example, fast judgment timeT1The wireless communication unit 2 is controlled to be in a power OFF state for 8 minutes after
[0028]
  The terminal counts the time, and when 8 minutes have elapsed, returns the wireless communication unit 2 to the ON state, and checks and determines the moving speed again. For high speed (still on the train)The terminalCheck the train time information and base station information in the base station area again. After 8 minutes, it will be in area 27-3.The terminalGet time information of station 39 and station 41 from base station 26-3To do. And the terminalTime when high-speed judgment was made againT1And received time informationOn the basis of the,Travel time to the nearest stopBecauseThe train is always movingEstimated movementTime ΔTx (x = x + 1) is calculated.This estimated movement time ΔTx is the above-described time difference based on the time T1 at which it is determined that the speed is high again.Or later,The terminalRepeat the same calculation. If low speed (get off the train) is determined,The terminalReturn to normal standby state.
[0029]
  FIG. 3 shows the operation when the train mode is set, and FIG. 4 shows the operation in the train mode. Step S1 is a normal mode. A train mode switching signal 25 for switching from the normal mode to the train mode is input from the keyboard 23 to the MCPU 8 by the user's keyboard operation (step S2). The train mode switching signal 25 is reported from the keyboard 23 to the MCPU 9 via the user IF unit 24, and the MCPU 8 sends it to the train mode memory 12.TrainMode ON is set (step S3). If there is no input from the keyboard, it waits for the input (step S2), and returns to the normal mode when the setting is completed (step S4).
[0030]
  As shown in FIG. 4, when the power is turned on (step S11), the MCPU 8 reads the mode from the train mode memory 12 (step S12). If “train mode is set” (step S13), the level change amount acquisition unit 6 measures the reception level (step S14). In the case of “no train mode setting”, as shown in FIG. 6A, a transition is made to the normal standby mode via the step branch point A (step S28).
[0031]
  Next, the moving speed determination unit 7 determines whether the speed is high or low.Yeah.If the determination is “high speed (on the train)”, the moving speed determination unit 7 tentatively determines that the terminal is on the train (step S16), and determines the train time for the communicating base station 26-2. A request is made to read specific base station area information (partial operation information described above) including information (step S17). The base station 26-2 makes a request to the train time information management system 29 through the radio telephone exchange 30 and confirms the train time information (partial operation information) for the base station area 27-2.
[0032]
  The train time information calculation unit 34 of the train time information management system 29 communicates with the time of communication with the terminal side and the station / track / departure time / stop time / base time of the base station area 27-2 where the communication is performed. The specific base station area information including the required time information is read from the train time information storage unit 32, and only partial operation information for a certain time is extracted and selected. Since the amount of operation information in the train time information storage unit 32 corresponding to the base station area 27-2 is enormous, partial operation information, which is information of the necessary minimum amount, is selected. The control unit 31 transmits the partial operation information thus selected to the base station 26-2 to be communicated. The base station transmits the partial operation information to the terminal in the train 43.
[0033]
  The train information management unit 11 of the MCPU 8 of the terminal stores the received partial operation information in the train time information memory 14 and the base station information memory 16, respectively. Based on the partial flight information, high-speed judgment timeT1Departure time of station 43 or 38 in the base station areaT0(A step S18) is confirmed. Fast judgment timeT1Departure timeT0For example, the departure time of the station 37T0When the radio unit OFF time calculating unit 18 approximately matches the time, the time (next station arrival time) when the required time to the next stop station closest to the departure station has elapsed based on the received partial flight information.T2) To fast judgment timeT1Is calculated, that is, a time ΔTx estimated that the train is moving (step S19).
[0034]
  When the train 43 departs from the station 37 in the base station area 27-2, the example described above:
Station 37-> Station 39: 10 minutes
Station 37-> Station 36: 11 minutes
Station 38 → Station 41: 7 minutes
Station 38-> Station 42: 13 minutes
Then, ΔT1(X = 1)Set to 8 minutes.
[0035]
  Next, the MCPU 8 transmits to the power supply unit power supply unit 3 command information “wireless unit power OFF”. The power supply unit 3 stops the power supply to the wireless communication unit 2 based on the command information (step S20). At the time of this stop, before turning off the wireless communication unit 2, it is possible to transmit an answering machine service setting command to the answering machine service system 28 via the base station 26-2 and the wireless telephone exchange 30.
[0036]
  The train information management unit 11 is operated by the current time counting unit 21.Estimated movementTime ΔT1 (x = 1) is counted (step S21).Estimated movementWhen the counting of the time ΔT1 is completed (step S22), the MCPU 8 transmits command information for “wireless unit power ON” to the power supply unit 3, and the power supply unit 3 resumes power supply to the wireless communication unit 2 (step S23). ).Estimated movementWhen the time ΔT1 is not counted, the process waits for the completion (steps S21 and S22). If power supply to the wireless communication unit 2 is started, the moving speed is determined again via the step branch point B as shown in FIG. 5 (step S24). If it is determined that the train is on the high speed (on the train), a request to read train time information and base station area information is made again to the currently communicating base station (step S25). If there is a low speed determination, as shown in FIG. 6A, the normal standby mode is entered at step branch point A (step S28), and the normal operation mode is maintained. At this time, if an answering machine is set in the answering machine service system 28, an answering machine setting release command is transmitted to the answering machine service system 28 via the base station 26-2 and the wireless telephone exchange 30. Is possible.
[0037]
  Next, the MCPU 8 compares the base station area information (partial operation information) received from the base station 26-2 with the base station information stored in the base station information memory 16. If the base station area information has changed (step S26 in FIG. 5), the train information management unit 11 calculates the moving direction of the train 43, and the base station information isBase station information memory 16Write to. Wireless unit OFF time calculation unit 18IsNext, a time ΔT2 that should surely move (difference from time T1 determined to be high again: step S20, x = 2) is calculated (step S27 in FIG. 5).. after that,The process proceeds to step S20 via the step branch point D,The power supply unit 3The power is turned off, and the power of the wireless communication unit 2 is turned on again through steps 21 and 22 (step S23). Such a process is repeated until the terminal owner gets off the train.That meansX of ΔTx is expressed as x = x + 1 for each process. During train modeAnd moreThe power OFF control is continued. When the vehicle is stationary or walking on the road, the power-off state is canceled even if the train mode is forgotten.
[0038]
  RoadIn the worst case, when there is an accident on the line and the train operation time is not performed according to the timetable, the ON state may continue improperly. Be controlled. Originally, you should ride with the antenna power turned off completely, but it is easy to forget to turn off the power just before boarding, and the time of improper ON state by switching to train mode when entering the station The band can be greatly reduced. An answering machine service can be automatically received during the power-off period.
[0039]
  If the base station information is the same in step S26 of FIG. 5, the process proceeds to step S29 of FIG.TransferThe time ΔT2 (x = 2) that must be moved is calculated, and the process proceeds to step S19. In this case, writing to the base station information memory 16 is not necessary. At the same time, the received train time information is written into the train time information memory 14. For example, the terminal counts time, and when 8 minutes (= ΔT1) has elapsed, the wireless communication unit 2 is turned on and the movement speed is confirmed again. In the case of high speed (still on the train), the train time information and base station information in the base station area are checked again. After 8 minutes, you are in base station area 27-3, so base station 26-3OrGet time information of station 39, 41To do. The wireless unit OFF time calculation unit 18 again performs the high speed determination time T1.And receivedElectric trainBased on the time information, the time ΔT2 during which the train is always moving between the nearest next stop station (difference from the time when it is determined to be high again: x = 2) is calculated. Thereafter, the same operation as described above is repeated (x = x + 1) until the user gets off the train (until it is determined that the speed is low).
[0040]
  FIG. 7 shows another embodiment of the portable terminal power supply disconnecting apparatus according to the present invention. In this embodiment, a train time information memory 31 corresponding to the base station area is provided instead of the train time information memory 14 and the base station information memory 16 of the embodiment shown in FIG. This is different from the previous embodiment.The train time information memory 31 stores train time information for the base station area. This train time information is read out when the train mode is set.In the present embodiment, the train time information management system 29 of FIG. 2 is unnecessary.
[0041]
  8 and 9 show the operation of this embodiment. FIG. 8 shows the operation when the train mode is set, and FIG. 9 shows the operation in the train mode. As shown in FIG. 8, step S31 is added and inserted between step S2 and step S3 of FIG. The train information management unit 11 in the MCPU 8 reads the train time information and the base station area information all at once, and stores them in the train time information memory 31 for the base station.Train information management unit 11The necessary information is taken in from an information organization that provides train time information (eg, an i-mode train time site) and stored.
[0042]
  As shown in FIG. 9, in step S32 instead of step S17 in the previous embodiment, if it is temporarily determined in step S16 that the train is being boarded, the train information management unit 11 in the terminal MCPU 8 communicates. The base station area information is requested to be read from a certain base station, and the base station information and the train time information stored in the train time information memory 31 for the base station area are read. Time determined to be high speed based on train time information in the base station area currently communicatingT1Departure time of stations in the base station areaT0To see if it matches. In a step (not shown) replacing step S25 in FIG. 5, base station information and train time information are read from the communicating base station.
[0043]
【The invention's effect】
  According to the portable terminal power supply disconnection apparatus and the disconnection method thereof according to the present invention, the time zone of the improper ON state during boarding can be greatly reduced while avoiding a significant increase in memory capacity. The position can be confirmed from the train time information and the high-speed determination time, and the position confirmation equipment such as the GPS and the station side equipment is unnecessary, so that it is not necessary to newly install the equipment.
[Brief description of the drawings]
FIG. 1 is a circuit block diagram showing an embodiment of a portable terminal power supply disconnecting device according to the present invention.
FIG. 2 is a system block diagram showing an embodiment of a portable terminal power supply disconnecting device according to the present invention.
FIG. 3 is a flowchart showing a mode setting flow;
FIG. 4 is a flowchart showing the main operation of the embodiment of the portable terminal power-off method according to the present invention.
FIG. 5 is a flowchart showing the replenishment operation of the embodiment of the method of turning off the mobile terminal power supply according to the present invention.
FIGS. 6A and 6B are flowcharts respectively showing another replenishment operation of the embodiment of the portable terminal power-off method according to the present invention.
FIG. 7 is a circuit block diagram showing another embodiment of the portable terminal power-off method according to the present invention.
FIG. 8 is a flowchart showing another replenishment operation of the embodiment of the portable terminal power-off method according to the present invention.
FIG. 9 is a flowchart showing another main operation of the embodiment of the method of turning off the portable terminal power supply according to the present invention.
[Explanation of symbols]
2 ... Wireless unit
3. Power supply control unit
6 ... Acquisition unit
7: Judgment unit
8 ... Judgment unit
14 ... Storage unit
15 ... Train time information
26-2 ... Base station
27-2 ... Base station area
37 ... 1st specific station
39 ... Second specific station

Claims (9)

A wireless unit for wireless transmission and reception;
An acquisition unit for acquiring the amount of change in the reception level of radio waves transmitted from the base station;
A determination unit that determines that the moving speed of the train that moves in unison with the wireless unit in response to the change amount exceeds a set reference value;
A power control unit that turns off power supplied to the wireless unit based on the determination ;
A storage unit for storing train time information,
The arrival time at the next station of the train obtained based on the train time information is represented by T2, and the determination time is represented by T1.
The power control unit has a time difference ΔT expressed by the following equation:
ΔT = T2-T1
A power-off device for the portable terminal that turns off the power for a time based on the above . A determination unit for determining whether the determination time and the train departure time are within a set time range;
When the determination unit determines that the determination time and the departure time are within the set time range,
The power control unit turns off the power
The portable terminal power supply disconnecting device according to claim 1. The train time information is received via the wireless unit, and the train time information is train time information of a route in a base station area to which a base station in which the wireless unit exists belongs and is close to the current time. The mobile terminal power supply disconnecting device according to claim 1 , wherein the mobile terminal power supply disconnecting device is band partial operation information. The mobile terminal power supply disconnecting device according to claim 1, wherein the power supply control unit returns the power supplied to the wireless unit to an original state after a time based on the ΔT has elapsed. After the power is restored, the determination unit again determines that the moving speed of the train exceeds the set reference value, and the power control unit turns off the power every time the determination is performed. Repeat operation
The portable terminal power supply disconnecting device according to claim 4. The following chain steps:
Determining that the speed of the mobile device exceeds the set speed value based on the received signal reception level,
Reducing power supplied to the wireless unit of the mobile terminal based on the determination ;
Including obtaining train operation information via the wireless unit;
Based on the operation information, the determination is made from the time required for the train between the first specific station and the second specific station, which is the next station of the first specific station, from the departure time of the train at the first specific station. The portable terminal power-off method, wherein the difference time obtained by subtracting the time until the determination time is the time for reducing the power . The chain step includes
Further comprising setting a train mode;
The mobile terminal power-off method according to claim 6, wherein the determination is performed based on setting the train mode. The chain step includes
The method for cutting off the mobile terminal power supply according to claim 6 or 7, further comprising transmitting a signal for receiving an answering service through the wireless unit in advance of reducing the power. Obtaining the flight information
The method for cutting off the mobile terminal power supply according to claim 7, further comprising acquiring the operation information when setting the train mode.

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