JP6474287B2 - Electronic device and electronic device control program - Google Patents

Electronic device and electronic device control program Download PDF

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JP6474287B2
JP6474287B2 JP2015051308A JP2015051308A JP6474287B2 JP 6474287 B2 JP6474287 B2 JP 6474287B2 JP 2015051308 A JP2015051308 A JP 2015051308A JP 2015051308 A JP2015051308 A JP 2015051308A JP 6474287 B2 JP6474287 B2 JP 6474287B2
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reception
electronic device
transmission
points
transmitted
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JP2016168274A (en
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哲也 野邉
哲也 野邉
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セイコーインスツル株式会社
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Description

  The present invention relates to an electronic device and a control program for the electronic device.

In order to automate tasks such as determining that the athlete has passed the measurement point and measuring the time that has passed in a sporting competition that aims at the goal while sequentially passing through the measurement points installed along the course, A measurement system using electronic equipment may be used. In addition, sports competitions that aim at a goal while sequentially passing through measurement points are, for example, marathons, triathlons, orienteering, and the like.
In such a measurement system, for example, an RFID (Radio Frequency Identification; small power saving IC communication technology) tag is attached to each athlete's race bib, shoes, wristband, wristwatch, or the like. Then, the RFID reader incorporated in the mat placed on the measurement point receives the radio wave from the RFID tag, thereby determining that the athlete has passed the measurement point.

  In this regard, for example, Patent Document 1 discloses a technique in which an electronic wristwatch and a reader device communicate using electromagnetic waves. In the technique described in Patent Document 1, reader devices are installed at a start point, a passage point, and a goal point, and an electronic wristwatch worn by a player receives electromagnetic waves emitted by the leader device. At that time, the electronic wristwatch transmits an electromagnetic wave including its own ID (Identifier) code to the reader device. The reader device transmits the received ID code to the timekeeping / recognition processing device, and the timekeeping / recognition processing device calculates a split time, a total time, and the like. Then, each time information calculated by the timing / recognition processing device is transmitted to the electronic wristwatch by the reader device, and the electronic wristwatch displays each time information on the display unit.

  Further, for example, Patent Document 2 discloses a technique for receiving a magnetic signal generated by a mat installed at a measurement point with an RFID tag and responding to the received signal. In the technique described in Patent Document 2, a player wears a personal exercise device including an RFID tag. In the measurement system, a plurality of mats for generating a magnetic field are installed along the race course. In the measurement system, as the athlete progresses along the course, the RFID tag is triggered by each mat, and the race data is displayed on the display of the personal exercise apparatus.

JP-A-5-172960 JP 2010-532673 A

  However, in the techniques described in Patent Document 1 and Patent Document 2, since the transmission / reception method is fixed to one of a plurality for each competition, the transmission signal transmitted from the mat for each competition is the electronic wristwatch. If it is different from the reception method, the electronic wristwatch may not be able to receive the transmission signal transmitted from the mat with a desired accuracy.

  The present invention has been made in view of the above circumstances, and provides an electronic device and a control program for an electronic device that can receive a transmission signal with desired accuracy even when there are a plurality of types of transmission signals. For the purpose.

  In order to achieve the above object, an electronic device according to one embodiment of the present invention receives an electromagnetic wave transmitted from a plurality of points including some points and other points by a transmission method unique to the measurement system. A receiving unit that receives the electromagnetic wave, a storage unit that stores information about the transmission method and information about a reception method capable of receiving the electromagnetic wave transmitted by the transmission method, and the reception unit receives the information By comparing the information included in the electromagnetic waves transmitted from some points with the information on the transmission method stored in the storage unit, the transmission method is specified, and the transmission method is determined based on the specified transmission method. A control unit that sets a reception method of electromagnetic waves transmitted from other points.

  Further, in the electronic device according to one aspect of the present invention, the some points include two points, and the control unit has the transmission method specified based on the electromagnetic waves received at the two points. When they match each other, a reception method for electromagnetic waves transmitted from the other points may be set based on the specified transmission method.

  In the electronic device according to one embodiment of the present invention, the transmission method includes information including at least one of a pattern of transmitted electromagnetic waves, a frequency of transmitted electromagnetic waves, and an intensity of transmitted electromagnetic waves. Also good.

  In the electronic device according to one aspect of the present invention, the reception method is associated with the transmission method, gain information when receiving the transmitted electromagnetic wave, and when receiving the transmitted electromagnetic wave. It may include at least one of band information of the filter, and the reception unit may include a setting switching unit that switches a setting to the reception method related to the transmission method.

  In the electronic device according to one aspect of the present invention, the control unit receives electromagnetic waves transmitted from a plurality of points according to the set reception method, and measures an interval between the reception times. Also good.

  Further, in the electronic device according to one aspect of the present invention, the electronic device has a clocking function for clocking time, a display unit capable of displaying information based on electromagnetic waves received by the set reception method, and the time. The electronic timepiece may have an electronic clock.

  In order to achieve the above object, a control program for an electronic device according to an aspect of the present invention stores information on an electromagnetic wave transmission method and information on a reception method capable of receiving an electromagnetic wave transmitted by the transmission method in a storage unit. Received by the reception procedure of receiving the electromagnetic wave to the computer of the electronic device that receives the electromagnetic wave transmitted from a plurality of points including some points and other points by a specific transmission method, and received by the reception procedure The information included in the electromagnetic wave transmitted from the part of the point is compared with the information regarding the transmission method stored in the storage unit, thereby specifying the transmission method and the specification procedure. And a procedure for setting a reception system for electromagnetic waves transmitted from the other points based on the transmission system.

  According to the present embodiment, even when there are a plurality of types of transmission signals, the transmission signals can be received with a desired accuracy.

It is the schematic which shows an example of the race hall which concerns on this embodiment. It is a schematic diagram showing an example of a measurement system concerning this embodiment. It is a block diagram which shows an example of a structure of the reader apparatus and electronic device which concern on this embodiment. It is a figure explaining an example of the operation part which concerns on this embodiment. It is a figure explaining the example of the transmission signal by the reader apparatus which concerns on this embodiment to an electronic device. It is a figure explaining an example of the relationship between the electric field strength for every transmission signal concerning this embodiment, and the distance from a mat | matte, and electric field strength. It is a figure explaining an example of the information regarding the transmission system memorize | stored in the memory | storage part which concerns on this embodiment. It is a figure explaining an example of the information regarding the receiving system memorize | stored in the memory | storage part which concerns on this embodiment. It is a flowchart of the process sequence which the control part which concerns on this embodiment performs. It is a flowchart of the process sequence which a control part performs when performing reception setting in the 2nd point which concerns on this embodiment. It is a block diagram which shows an example of a structure of the measurement system which concerns on this embodiment. It is a figure explaining an example of the information regarding the reception setting memorize | stored in the memory | storage part which concerns on this embodiment.

Embodiments of the present invention will be described with reference to the drawings. In addition, the electronic device in the embodiment of the present invention will be described by exemplifying a sports watch worn on a wrist of a marathon competition athlete. During the competition, the competitor determines whether to increase or decrease the running pace by checking various time information displayed on the display of the sports watch.
The present invention is not limited to marathon competitions, and can be applied to, for example, triathlons, swimming competitions, bicycle competitions, speed skating competitions, mountain climbing, and orienteering. The present invention can also be applied to sports competitions that aim at a goal while sequentially passing through measurement points installed along a course, and recreation such as a scavenger hunt.

FIG. 1 is a schematic diagram illustrating an example of a race venue according to the present embodiment.
As shown in FIG. 1, the race venue includes a race course 40, a start point 30-1, barrier points 30-2 to 30-4, and a goal point 30-5. In addition, when one point is not specified among the start point 30-1, the barrier points 30-2 to 30-4, and the goal point 30-5, it is simply referred to as the point 30. Moreover, when one point is not specified among the gateway points 30-2 to 30-4, it is called the single gateway point 30.

  The race course 40 is a route on which the athlete runs in the marathon competition. The race course 40 is set up using, for example, an urban road. The athlete starts traveling from the start point 30-1, travels along the race course 40, and finishes traveling after reaching the goal point 30-5.

The start point 30-1 (first point) is a point where the athlete starts the competition, that is, a point where the run starts. A leader device 20-1 is installed at the start point 30-1. The leader device 20-1 is usually set in accordance with the position of the start line drawn on the road surface of the start point 30-1, for example. Here, when one reader device is not specified among the reader devices 20-1 to 20-5, it is simply referred to as the reader device 20. As will be described later, the reader device 20 transmits a transmission signal.
In particular, in marathon competitions where there are a large number of competitors participating, the starting point where the competitors start running is several tens to several hundred meters before the start line and is the starting point of the race course 40 There may be a point away from the point 30-1.

  The barrier points 30-2 to 30-4 are arranged along the race course 40 at points separated from each other. The barrier points 30-2 to 30-4 are points through which the athlete passes from the start point 30-1 to the goal point 30-5. Corresponding reader devices 20-2 to 20-4 are installed at the gateway points 30-2 to 30-4, respectively.

In the example shown in FIG. 1, the gateway point 30-2 is arranged at a point about 10 km from the start point 30-1 along the race course 40. Similarly, the gateway point 30-3 and the barrier point 30-4 are arranged along the race course 40 from the start point 30-1 and about 20 km and 30 km, respectively.
In addition, the reader apparatus 20 (except 20-1 and 20-5) may be installed apart from the points of the gateway points 30-2 to 30-4. The case where it is installed away from the points 30-2 to 30-4 is, for example, the number of points 30-2 before or after the 10 km point due to restrictions on road traffic used by the race course 40, etc. This is the case when it is necessary to install 10 meters to several hundred meters apart.

  The goal point 30-5 is a point where the athlete completes the race course 40 and finishes running. A leader device 20-5 is installed at the goal point 30-5.

Next, an outline of the measurement system will be described with reference to the drawings.
FIG. 2 is a schematic diagram illustrating an example of the measurement system 1 according to the present embodiment.
As shown in FIG. 2, the measurement system 1 includes a reader device 20 and an electronic device 10.

  The reader device 20 transmits a transmission signal (hereinafter also referred to as an electromagnetic wave) to the predetermined range by generating a magnetic field in the predetermined range. The transmission signal differs depending on the measurement system 1 used. As will be described later, the transmission signal is, for example, a 50 Hz signal, a signal containing information, a signal whose signal level does not change, and the like.

  The electronic device 10 is attached to the athlete's wrist. The electronic device 10 may be attached to shoes, wear, or the ankle, neck, head, etc. of the athlete. The electronic device 10 shown in FIG. 2 is a wristwatch type device. When a player wearing the electronic device 10 passes over the leader device 20, the electronic device 10 receives a transmission signal included in the magnetic field 25 generated by the leader device 20, and performs processing according to the received transmission signal. I do. The processing performed by the electronic device 10 will be described later.

(Configuration of reader device and electronic device)
Next, the configuration of the reader device 20 and the electronic device 10 will be described.
FIG. 3 is a block diagram illustrating an example of the configuration of the reader device 20 and the electronic device 10 according to the present embodiment.
First, the configuration of the reader device 20 will be described.
As shown in FIG. 3, the reader device 20 includes a control unit 21, a transmission circuit 22, and a mat 23. The mat 23 includes an antenna 231.

The control unit 21 generates a transmission signal and outputs the generated transmission signal to the transmission circuit 22.
The transmission circuit 22 is connected to the antenna 231. The transmission circuit 22 places the transmission signal output from the control unit 21 on the magnetic field 25 (FIG. 2) and transmits it via the antenna 231. The transmission circuit 22 performs encoding, modulation, and the like on the transmission signal according to the format of the transmission signal used in the measurement system 1.

The mat 23 is made of a member having appropriate hardness, thinness, size, and the like so that the rider can continue running without a sense of incompatibility when stepping over during the competition. Further, the mat 23 is durable enough for all participants in the competition to withstand the mat 23, impact resistance sufficient to protect the antenna 231 and the like included in the mat 23, and rain Even in this case, the antenna 231 is configured to have water resistance sufficient to protect the antenna 231.
The antenna 231 is embedded in the mat 23 and has, for example, a conductor portion formed into an annular coil.

Next, the configuration of the electronic device 10 will be described.
The electronic device 10 includes a timer unit 11, an antenna 12, a receiving circuit 13, a control unit 14, an operation unit 15, a display unit 16, a storage unit 17, and a power supply unit 18.

  The timer unit 11 includes a crystal resonator and generates an oscillation signal having a predetermined frequency (for example, 32 [kHz]) based on the vibration of the crystal resonator. The timer unit 11 divides the generated oscillation signal to generate a reference signal used for timing. The drive frequency of the reference signal is, for example, 1 [Hz]. The timekeeping unit 11 measures time using the generated reference signal and outputs the timed result to the control unit 14. The timed result includes the current time, the lap time for each point 30, the split time, the runtime, and the like.

  Note that the lap time is the elapsed time in a predetermined section, and is the elapsed time required for movement from the start point 30-1 to the gateway point 30-2 in FIG. 1, for example. The runtime is the elapsed time required for the movement from the start point 30-1 to the goal point 30-5, and is the total time of the lap times in each section. Further, the split time is an intermediate elapsed time required for movement from the start point 30-1 to each point 30.

  The antenna 12 receives the magnetic field 25 generated by the reader device 20. The antenna 12 converts the received magnetic field 25 into an electric signal and outputs the converted electric signal to the receiving circuit 13. The antenna 12 may be an antenna that also serves as an antenna for receiving the standard radio wave transmitted from the transmitting station in addition to receiving the magnetic field 25. The transmitting station transmits a standard radio wave for a radio clock that adjusts the time by radio waves. That is, when the electronic device 10 is a radio clock, the antenna 12 may receive radio waves for the radio clock and the magnetic field 25 transmitted by the reader device 20.

The reception circuit 13 includes a setting switching unit 131, a filter 132, and an amplifier 133. The reception circuit 13 extracts a transmission signal from the electrical signal output from the antenna 12 using the filter 132 and the amplifier 133 switched by the setting switching unit 131. The receiving circuit 13 outputs the extracted transmission signal to the control unit 14. Note that the receiving circuit 13 may include a decoding circuit, a demodulation circuit, and the like.
The setting switching unit 131 switches settings of the filter 132 and the amplifier 133 under the control of the control unit 14. The filter 132 is, for example, a BPF (band pass filter). The amplifier 133 is an amplifier circuit.

  The control unit 14 identifies the transmission method of the transmission signal transmitted by the reader device 20 by comparing the information included in the transmission signal output from the reception circuit 13 with the information regarding the transmission method stored in the storage unit 17. To do. The control unit 14 specifies the reception method based on the specified transmission method. The control unit 14 selects a reception setting stored in the storage unit 17 based on the specified reception method, and switches the setting switching unit 131 according to the selected reception setting. Note that the control unit 14 may store information indicating the selected reception setting in the storage unit 17. Further, information on the transmission signal transmitted by the reader device 20 and reception settings will be described later.

  Further, the control unit 14 detects that a measurement mode such as marathon has been selected by the operation of the operation unit 15. When detecting that the measurement mode is selected, the control unit 14 controls the time measuring unit 11 to reset the lap time and the split time. The control unit 14 controls the timing unit 11 to start measuring the lap time and the split time when the transmission signal is received for the first time. When the transmission signal is received after the second time, the control unit 14 receives the previous transmission signal. The lap type from the received point 30 to the currently received point 30 is measured by controlling the timer unit 11. When the control unit 14 receives a transmission signal from the leader device 20 at the goal point 30-5 (FIG. 1), the runtime from the start point 30-1 (FIG. 1) to the goal point 30-5 (FIG. 1). Measure. The control unit 14 causes the display unit 16 to display the measured lap time and runtime. Note that the control unit 14 may associate and store the measurement results in the storage unit 17.

The operation unit 15 receives an operation input from the player and outputs the received operation result to the control unit 14. The operation unit 15 is a member such as an input button, a screw, a dial, a touch pad, or a pointing device, for example.
FIG. 4 is a diagram illustrating an example of the operation unit 15 according to the present embodiment. As shown in FIG. 4, the electronic device 10 includes five buttons (SWA, SWB, SWC, SWD, SWE) and a display unit 16. Buttons SWA, SWB, SWC, SWD, and SWE are the operation unit 15. In the example illustrated in FIG. 4, the example in which the operation unit 15 includes five switches is illustrated. However, the number of buttons is not limited to five, and may be six or more even if the number is four or less. Also good.

Returning to FIG. 3, the description of the electronic device 10 will be continued.
The display unit 16 displays time information, a lap time for each point 30, a split time, and the like under the control of the control unit 14. The display unit 16 is, for example, a liquid crystal (LCD, Liquid Crystal Display) panel, an organic EL (electroluminescence panel) panel, or the like. Or the display part 16 has a pointer and a dial.

  The storage unit 17 stores information related to the transmission method and information related to the reception method. The information on the transmission method includes a transmission signal (electromagnetic wave) pattern (hereinafter also referred to as a signal pattern), a transmission signal intensity (hereinafter also referred to as signal strength), and a transmission signal frequency (hereinafter also referred to as signal frequency). , Information on a modulation scheme, a coding scheme, and the like. The information related to the reception method is information related to the pattern of the reception signal, the strength of the reception signal, the frequency of the reception signal, the demodulation method, the decoding method, and the like. The reception setting is a combination of a received signal pattern, a received signal intensity, and a received signal frequency. Information regarding the transmission method, information regarding the reception method, and reception settings will be described later.

  The power supply unit 18 is a primary battery, for example, a 3 [V] coin lithium battery. In addition, the power supply part 18 may be provided with the solar panel and the secondary battery. The power supply unit 18 supplies power to the time measuring unit 11, the receiving circuit 13, the control unit 14, the display unit 16, and the storage unit 17 of the electronic device 10.

(Example of transmission signal)
Next, an example of a transmission signal transmitted from the reader device 20 to the electronic device 10 will be described.
FIG. 5 is a diagram illustrating an example of a transmission signal transmitted to the electronic device 10 by the reader device 20 according to the present embodiment. In FIG. 5, the horizontal axis represents time, and the vertical axis represents the signal level. Each of H1 to H3 represents a high level, and L represents a low level. Each of the waveforms g101 to g103 is a waveform of a transmission signal. Note that the reception signal received by the electronic device 10 is a signal based on the transmission signal shown in FIG.
As shown in FIG. 5, the waveform g101 has a high level value H1. In addition, the waveform g101 has one cycle of T1, a high level period of 50%, for example, and a low level period of 50%. In the present embodiment, the transmission signal having the waveform g101 is referred to as a signal pattern P1.

  The waveform g102 has a high level value H2. The waveform g102 has one period T2. Further, since the transmission signal of the waveform g102 is an example in which information is included, a high level period and a low level period differ depending on the information. In addition, information is information which shows the position (latitude, longitude) of each point 30, for example. In the present embodiment, the transmission signal having the waveform g102 is referred to as a signal pattern P2.

The waveform g103 has a high level value H3. The waveform g103 has a high level period of 100%. In the present embodiment, the transmission signal having the waveform g103 is referred to as a signal pattern P3.
In addition, the signal pattern of the transmission signal shown in FIG. 5 is an example, and is not limited to this.

  When the transmission signal is the first transmission method, the control unit 14 detects that the transmission signal changes between the H level and the L level, and detects that the transmission signal from the reader device 20 has been received. Moreover, the control part 14 extracts the information contained in a transmission signal, when a transmission signal is a 2nd transmission system. Furthermore, when the transmission signal is the third transmission method, the control unit 14 receives the H level transmission signal and detects that the transmission signal from the reader device 20 has been received.

Next, the intensity of the received signal will be described.
FIG. 6 is a diagram for explaining an example of the relationship between the electric field strength for each transmission signal and the relationship between the distance from the mat 23 and the electric field strength according to the present embodiment. In FIG. 6, the horizontal axis represents the distance [m] from the mat 23, and the vertical axis represents the electric field strength [V / m].
A solid line g201 is a transmission signal having a characteristic that the electric field strength when the distance from the mat 23 is L1 is E1, and the electric field strength when the distance from the mat 23 is L2 is E11.
A broken line g202 is a transmission signal having a characteristic that the electric field strength when the distance from the mat 23 is L1 is E2, and the electric field strength when the distance from the mat 23 is L2 is E12.
An alternate long and short dash line g203 is a transmission signal having a characteristic that the electric field strength when the distance from the mat 23 is L1 is E3 and the electric field strength when the distance from the mat 23 is L2 is E13.

  The electric field strength E1 is larger than the electric field strengths E11, E2, and E3. Further, the electric field strength E2 is larger than the electric field strengths E12 and E3. Furthermore, the electric field strength E3 is larger than the electric field strength E13. Further, the distance L1 is smaller than the distance L2. That is, the position of the distance L1 is closer to the mat 23 than the position of the distance L2.

For example, the transmission signal of the first reader device 20 has the characteristics of the signal pattern 1 and the electric field strength of the solid line g201, and the transmission signal of the second reader device 20 has the characteristics of the signal pattern 2 and the electric field strength of the broken line g202. Yes, the transmission signal of the third reader device 20 has the characteristics of the signal pattern 3 and the electric field strength of the alternate long and short dash line g203.
Alternatively, the transmission signal of the first reader device 20 is the signal pattern 1 and the electric field strength characteristic is a solid line g201, and the transmission signal of the second reader device 20 is the signal pattern 1 and the electric field strength characteristic is a broken line g202. In addition, the transmission signal of the third reader device 20 may be the signal pattern 1 and the electric field strength characteristic of the one-dot chain line g203.
The intensity of the transmission signal (electromagnetic wave) illustrated in FIG. 6 is an example, and the intensity of the transmission signal may be, for example, a magnetic field intensity [A / m]. Even when the intensity of the transmission signal is the magnetic field intensity, the magnetic field intensity for each transmission signal is different, and the magnetic field intensity of each transmission signal changes according to the distance from the mat.

Next, an example of information stored in the storage unit 17 will be described.
FIG. 7 is a diagram for explaining an example of information related to the transmission method stored in the storage unit 17 according to the present embodiment.
As illustrated in FIG. 7, the signal pattern, the signal strength, and the signal frequency are stored in the storage unit 17 in association with each measurement system 1. For example, for the first system, the signal pattern P1, the signal intensity I1, and the signal frequency F1 are associated and stored in the storage unit 17. As details of the signal pattern, the time or frequency of one cycle, the duty of the signal, the format of the signal when information is included, and the like are stored in association with each other (not shown). For example, when the signal pattern is P1, one cycle is associated with T1 and a duty of 50%. Further, as shown in FIG. 6, the signal strength is the electric field strength at a predetermined distance from the mat 23, for example, the distance L1. Further, the signal frequency is a frequency of one cycle of the transmission signal, for example, 50 Hz.

FIG. 8 is a diagram for explaining an example of information regarding the reception method stored in the storage unit 17 according to the present embodiment.
As shown in FIG. 8, the storage unit 17 stores a signal pattern, a gain for the amplifier 133, and a BPF setting for the filter 132 in association with the reception setting. For example, for the first reception setting, the signal pattern P1, the gain G1, and the BPF setting FL1 are associated with each other and stored in the storage unit 17.

(Explanation of judgment and setting process, timing process)
Next, the determination, setting process procedure, and time measurement process procedure will be described.
FIG. 9 is a flowchart of a processing procedure performed by the control unit 14 according to the present embodiment. In the example shown in FIG. 9, there are three types of transmission patterns shown in FIG. In addition, the control unit 14 performs the following processing after it is detected that the operation unit 15 is operated by the athlete and, for example, the marathon mode is selected.

(Step S1) The control unit 14 controls the setting switching unit 131 to switch the gain of the amplifier 133 of the reception circuit 13 to H (high).
(Step S <b> 2) The control unit 14 determines whether or not a transmission signal is received via the antenna 12 and the reception circuit 13. When it is determined that the transmission signal is received (step S2; YES), the control unit 14 proceeds to step S3, and when it is determined that the transmission signal is not received (step S2; NO), the process of step S2 is performed. repeat.

(Step S3) The control unit 14 determines whether or not there is a pattern in the received transmission signal. When it is determined that the received transmission signal has a pattern (step S3; YES), the control unit 14 proceeds to step S4, and when it is determined that the received transmission signal has no pattern (step S3; NO), The process proceeds to step S7.
A signal having a pattern is a signal having a high level and a low level, and is the signal pattern P1 or the signal pattern P2 in FIG. Further, the signal having no pattern is a signal having only a high level or only a low level, and is the signal pattern P3 in FIG.

(Step S4) Based on the information stored in the storage unit 17, the control unit 14 specifies whether the signal pattern is P1 or P2. When the control unit 14 specifies that the signal pattern is P1 (step S4; signal pattern P1), the process proceeds to step S5, and when the signal pattern is specified as P2 (step S4; signal pattern P2), The process proceeds to step S6.

(Step S5) The control unit 14 identifies the transmission method of the received transmission signal as the transmission method of the first system (FIG. 7), and identifies the reception method according to the identified transmission method. Subsequently, the control unit 14 selects reception setting 1 (FIG. 8) based on the specified reception method. Subsequently, the control unit 14 controls the setting switching unit 131 to switch to the reception setting 1. Specifically, as shown in FIG. 8, the control unit 14 switches the received signal pattern to P1, the gain of the amplifier 133 to G1, and the setting of the filter 132 to FL1. The control part 14 advances a process to step S10.

(Step S6) The control unit 14 specifies the transmission method of the received transmission signal as the transmission method of the second system (FIG. 7), and specifies the reception method according to the specific transmission method. Subsequently, the control unit 14 selects reception setting 2 (FIG. 8) based on the specified reception method. Subsequently, the control unit 14 controls the setting switching unit 131 to switch to the reception setting 2. Specifically, as illustrated in FIG. 8, the control unit 14 switches the received signal pattern to P2, the gain of the amplifier 133 to G2, and the setting of the filter 132 to FL2. The control part 14 advances a process to step S10.

(Step S7) The control unit 14 controls the setting switching unit 131 to switch the gain of the amplifier 133 to L (low). The meaning of this process is to separate whether the received signal is a transmission signal transmitted from the reader device 20 or noise. The control unit 14 proceeds with the process to step S8.

(Step S <b> 8) The control unit 14 determines whether a signal is received via the antenna 12 and the receiving circuit 13. When it is determined that the transmission signal is received (step S8; YES), the control unit 14 proceeds to step S9. Or the control part 14 returns a process to step S2, when it determines with not having received the signal (step S8; NO).

(Step S9) The control unit 14 specifies the transmission method of the received transmission signal as the transmission method of the third system (FIG. 7), and specifies the reception method according to the specific transmission method. Subsequently, the control unit 14 selects the reception setting 3 (FIG. 8) based on the specified reception method, and advances the process to step S10. Subsequently, the control unit 14 operates the setting switching unit 131 to switch to the reception setting 3. Specifically, as shown in FIG. 8, the control unit 14 switches the received signal pattern to P3, the gain of the amplifier 133 to G3, and the setting of the filter 132 to FL3. The control part 14 advances a process to step S10.

(Step S10) Whether or not the control unit 14 has received a transmission signal via the antenna 12 and the reception circuit 13 set to reception setting by any one of steps S5, S6, or S9. Is determined. When it is determined that the transmission signal is received (step S10; YES), the control unit 14 proceeds to step S11, and when it is determined that the transmission signal is not received (step S10; NO), step S10. Repeat the process.
Here, the reason why the process of step S10 is performed will be described. When the player is in front of the start point 30-1, the electronic device 10 receives a signal by the process of step S1, and the reception setting is completed by the processes of steps S1 to S9. However, when the gain of the amplifier 133 becomes smaller than H after the reception setting is completed, the electronic device 10 cannot receive a transmission signal at a point where the athlete exists. And when a player starts a movement and approaches the leader device 20, the electronic device 10 can receive a transmission signal. For this reason, the electronic device 10 receives the transmission signal from the reader device 20 at the start point 30-1 after the reception setting by the process of step S10.

(Step S11) When the transmission unit 14 can receive the transmission signal in Step S10, the control unit 14 determines the time (hereinafter also referred to as time determination) using the time when the transmission signal can be received as the start time.
(Step S12) After the time is determined in step S11, the control unit 14 waits for reception for a predetermined time so that the time is not determined again at the same point 30. After a predetermined time has elapsed, the control unit 14 advances the process to step S13.

(Step S <b> 13) The control unit 14 determines whether or not a transmission signal is received via the antenna 12 and the reception circuit 13. When it is determined that the signal is received (step S13; YES), the control unit 14 proceeds to step S14, and when it is determined that the signal is not received (step S13; NO), the process of step S13 is performed. repeat.

(Step S14) When the control unit 14 receives the transmission signal in Step S13, the control unit 14 determines the time when the transmission signal is received as the time when the gateway point 30 is passed.
(Step S15) The control unit 14 determines whether the goal point 30-5 has been reached and the marathon mode is ended by the player, that is, whether the measurement is ended. When it is determined that the measurement has not ended (step S15; NO), the control unit 14 returns the process to step S12. Or the control part 14 complete | finishes a process, when it determines with the measurement having been complete | finished (step S15; YES).
In addition, the control part 14 repeats the process of step S12-step S15 for every barrier point 30. FIG.

  Note that the value of the gain H in step S1 and the value of the gain L of the amplifier 133 in step S7 are set in advance by the setter of the electronic device 10, for example, by actual measurement.

Moreover, the control part 14 measures the time interval after receiving a transmission signal, specifying a transmission system, and receiving a transmission signal again. As described in step S12, the control unit 14 waits for a predetermined time, and determines that the received transmission signal is a transmission signal at the same point when the measured time interval is shorter than the predetermined time. And the control part 14 discriminate | determines that the received transmission signal is a transmission signal of a different point, when the measured time interval is longer than predetermined time. Further, the control unit 14 does not determine the time based on the transmission signal determined to be the same point.
Thereby, the electronic device 10 does not perform reception setting many times at the same point, can prevent malfunction due to noise, and can further reduce power consumption. In addition, the electronic device 10 can prevent malfunctions that determine time multiple times at the same point, and can further reduce power consumption.

Here, a specific example of processing performed by the control unit 14 will be described with reference to FIGS. 1, 2, and 9.
As described above, when the number of participants in the competition is large, the athlete may be in front of the start point 30-1 (FIG. 1) before the start time. In such a case, after the athlete operates the operation unit 15 of the electronic device 10 to select the marathon mode, the process shown in FIG. 9 is started. In step S1, since the gain of the amplifier 133 is switched to H, the control unit 14 receives the transmission signal transmitted by the reader device 20 at a point before the start point 30-1. The control unit 14 performs the processing from step S2 to step S5 to identify, for example, the transmission signal as the signal pattern P1, that is, the first transmission method. And the control part 14 specifies a receiving system based on the specified transmission system, and sets the receiving circuit 13 to the reception setting 1 by the specified receiving system (step S5). In this way, when the control unit 14 first receives a transmission signal, the control unit 14 compares the information included in the received transmission signal (electromagnetic wave) with the information related to the transmission method stored in the storage unit 17 to transmit the transmission signal. The signal pattern of the signal, that is, the type of the measurement system 1 is specified. Then, the control unit 14 selects a reception setting based on the identified result and the information stored in the storage unit 17, and sets the setting switching unit 131 to the selected reception setting.
And as a result of setting to the reception setting 1, the control unit 14 becomes unable to receive a transmission signal at a point before the start point 30-1, and controls to a reception standby state (step S10).

When the athlete reaches the predetermined range of the start point 30-1, the control unit 14 determines that the start point 30-1 has been reached, and determines the start time (step S11).
Thereafter, the control unit 14 receives a transmission signal every time it reaches the gateway point 30-2,..., And determines the received time as the time passing through the point 30.
Until the goal point 30-5 is reached and the marathon mode is ended by the athlete, the control unit 14 repeats the processes of step S12 to step S15.

As described above, in this embodiment, the reception setting set at the first point (start point 30-1) is also used at other points.
Note that the control unit 14 may perform determination of presence / absence of a signal pattern, determination of a signal pattern, and reception setting for each gateway point.

  As described above, the electronic apparatus 10 according to the present embodiment is configured so that a part of the electronic device 10 (for example, the start point 30) is transmitted by a transmission method unique to the measurement system 1 (for example, any one of the first to third transmission methods). -1, the gateway point 30-2,..., Electromagnetic waves transmitted from a plurality of points including any one of the barrier points 30-4) and other points (points other than some points) ( In the electronic device 10 that receives the magnetic field 25 (transmission signal), the reception unit (reception circuit 13) that receives the electromagnetic wave, and the information related to the transmission method and the information related to the reception method capable of receiving the electromagnetic wave transmitted by the transmission method are stored. The transmission unit is identified by comparing the information contained in the electromagnetic wave transmitted from some points received by the storage unit 17 and the reception unit with the information on the transmission method stored in the storage unit. ,specific And a control unit 14 for setting a reception mode of the electromagnetic waves transmitted from other points, the based on the transmission scheme.

  With this configuration, the electronic apparatus 10 according to the present embodiment can receive a transmission signal with a desired accuracy even when there are a plurality of types of transmission signals.

In the electronic apparatus 10 of the present embodiment, the transmission method (for example, any one of the first to third transmission methods) is a pattern (signal pattern) of electromagnetic waves (magnetic field 25, transmission signal) to be transmitted. , Information including at least one of the frequency (transmission frequency) of the transmitted electromagnetic wave and the intensity (signal intensity) of the transmitted electromagnetic wave.
In the electronic apparatus 10 of the present embodiment, the reception method (for example, any one of the first to third transmission methods) is transmitted electromagnetic waves (magnetic field 25, transmission signal) associated with the transmission method. At least one of gain information (for example, gain G1, G2,...) And filter band information (for example, FL1, FL2,...) When receiving transmitted electromagnetic waves. In addition, the reception unit (reception circuit 13) includes a setting switching unit 131 that switches the setting to a reception method related to the transmission method.

With this configuration, the electronic apparatus 10 according to the present embodiment specifies the transmission method received by the reception circuit 13 even when there are a plurality of types of transmission signals, and specifies the reception method based on the specified transmission method. The transmission signal can be received by switching to the specified reception setting.
Also, with this configuration, the electronic device 10 according to the present embodiment can receive a transmission signal by switching the gain of the reception circuit 13 even when there are a plurality of types of transmission signals.
Also, with this configuration, the electronic device 10 of the present embodiment can receive the transmission signal by switching the filter setting of the reception circuit 13 even when there are a plurality of types of transmission signals.

  Moreover, in the electronic device 10 of the present embodiment, the control unit 14 uses a plurality of points (for example, the gateway point 30-2,..., The gateway point 30-4, the goal point 30-5) according to the set reception method. The electromagnetic wave transmitted from any point) is received, and the interval of the received time is measured.

  With this configuration, the electronic device 10 according to the present embodiment does not perform reception setting many times at the same point, can prevent malfunction due to noise, and can further reduce power consumption. In addition, the electronic device 10 can prevent malfunctions that determine time multiple times at the same point, and can further reduce power consumption.

In the example illustrated in FIG. 9, the example in which the three transmission signals are determined as illustrated in FIG. 5 and the reception setting is performed based on the determined result is described, but the present invention is not limited thereto. It is sufficient if there are two or more signal patterns. For example, if four types (P1, P2, P4 (not shown), P5 (not shown)) of communication methods having patterns in the signal are known, the electronic device 10 determines that the signal pattern is P1 in step S4 of FIG. , P2, P4, or P5, and the transmission method is specified according to the specified signal pattern. Then, the electronic device 10 identifies the reception method based on the identified transmission method, sets the reception setting 4 when the signal pattern is P4, and receives when the signal pattern is P5 based on the identified reception method. You may make it set to the setting 5.
Moreover, the signal pattern shown in FIG. 5 is an example, and other signal patterns may be used.

<Example of receiving settings at the second point>
In the example shown in FIG. 9, the reception setting is confirmed at the start point 30-1 and is set at the start point 30-1 at the subsequent points (gate points 30-2 to 30-4 and goal point 30-5). Although an example in which the electronic device 10 receives a transmission signal from the reader device 20 using the received reception settings has been described, the present invention is not limited to this.
The control unit 14 performs reception setting at the start point 30-1, and performs determination of presence / absence of a signal pattern, determination of a signal pattern, and reception setting also at the next point (for example, the gateway point 30-2). Also good.

FIG. 10 is a flowchart of a processing procedure performed by the control unit 14 when reception setting is performed at the second point according to the present embodiment.
(Step S101) The control unit 14 performs reception settings at the start point 30-1 by performing the processes of steps S1 to S9 in FIG. Note that the control unit 14 does not determine the reception setting. For example, the control unit 14 causes the storage unit 17 to store information indicating that the reception setting has not been confirmed.
(Step S102) The control unit 14 measures the time at the start point 30-1 by performing the processes of steps S10 and S11 of FIG.

(Step S103) The control unit 14 determines whether or not the reception setting has been confirmed based on the information indicating whether or not the reception setting stored in the storage unit 17 has been confirmed. When it is determined that the reception setting has been confirmed (step S103; YES), the control unit 14 proceeds to the process of step S107, and when it is determined that the reception setting has not been confirmed (step S103; NO), step S104. Proceed to the process. Specifically, since the reception setting has not yet been confirmed at the gateway point 30-2 (FIG. 1), the control unit 14 proceeds to the process of step S104 and performs the second reception setting.

(Step S104) The control unit 14 performs reception settings at the second and subsequent points 30 by performing the processes of steps S1 to S9 in FIG.
(Step S105) The control unit 14 determines whether or not the reception settings at the two points 30 are the same. When it is determined that the reception settings at the two points 30 are the same (step S105; YES), the control unit 14 proceeds to step S106 and determines that the reception settings at the two points 30 are not the same. If so (step S105; NO), the process proceeds to step S107. The two points are two consecutive points 30, for example, a start point 30-1 and a barrier point 30-2. If it is determined that the reception settings at the two points 30 are not the same at the gateway point 30-2, for example, in the second round of steps S103 to S108, for example, the continuous gateway point 30-2 and the gateway point You may make it compare each 30-3 reception setting. If the reception settings do not match, it is possible that either one of the reception settings set at the start point 30-1 or the reception settings set at other points 30 is affected by noise and is not a correct reception setting. There is sex. For this reason, the control unit 14 does not determine the reception setting when the reception settings do not match.

(Step S106) The control unit 14 determines the reception setting set in step S101 or step S104 as the reception setting used at the subsequent point 30. The control unit 14 proceeds with the process to step S107.
(Step S107) The control part 14 performs the time measurement in the point 30 after the gateway point 30-2 by performing the process of step S12 to S14 of FIG.

(Step S108) The control unit 14 determines whether or not the marathon mode has been completed by the athlete, that is, the measurement has been completed, after reaching the goal point 30-5. When it is determined that the measurement has not ended (step S108; NO), the control unit 14 returns the process to step S103. Or the control part 14 complete | finishes a process, when it determines with the measurement having been complete | finished (step S108; YES).
In addition, the control part 14 repeats the process of step S103-step S108 for every barrier point 30. FIG.

  In the above-described example, if the reception setting set at the start point 30-1 does not match the reception setting set at the gateway point 30-2 in step S105, the second round of steps S103 to S108 is performed. In the processing, the example in which the reception settings at two consecutive points 30 are compared has been described, but the present invention is not limited to this. For example, when there are two matching reception settings among the reception settings set at the start point 30-1, the gateway point 30-2, and the gateway point 30-3, for example, the control unit 14 sets the matching reception setting. You may make it confirm as a reception setting used by the subsequent points 30. FIG.

  As described above, in the electronic device 10 of the present embodiment, some points include two points (for example, the start point 30-1 and the gateway point 30-2), and the control unit 14 receives at the two points. Based on the specified transmission method when the transmission method (for example, any one of the first to third transmission methods) identified based on the electromagnetic wave (magnetic field 25, transmission signal) matches each other. A reception method for electromagnetic waves transmitted from other points (for example, the gateway point 30-3,...) Is set.

  With this configuration, for example, the electronic device 10 of the present embodiment allows the reception setting at the next point even when the reception setting selected at the start point 30-1 is not properly selected due to the influence of noise or the like. By selecting this, the influence of noise can be reduced.

In this embodiment, the example in which the electronic device 10 receives the transmission signal transmitted by the reader device 20 has been described, but the present invention is not limited to this. For example, the electronic device 10 may transmit information including an identifier (ID) that can identify the electronic device 10 to the reader device 20A as illustrated in FIG.
FIG. 11 is a block diagram showing an example of the configuration of the measurement system 1A according to the present embodiment.
As illustrated in FIG. 11, the measurement system 1 </ b> A includes an electronic device 10 </ b> A instead of the electronic device 10, and includes a reader device 20 </ b> A instead of the reader device 20. In addition, the description which abbreviate | omits the function part which has the same function as the electronic device 10 or the reader apparatus 20 using the same code | symbol.

The electronic device 10 </ b> A further includes a transmission circuit 19.
The storage unit 17 further stores transmission settings. As illustrated in FIG. 12, the signal pattern, the gain, and the BPF setting are stored in the storage unit 17 in association with the transmission setting. Further, this transmission setting is stored in association with the reception setting as shown in FIG. FIG. 12 is a diagram for explaining an example of information related to reception settings stored in the storage unit 17 according to the present embodiment. As shown in FIG. 12, for example, reception setting 1 and transmission setting 1 are associated with each other. Further, for example, as transmission setting 1, the signal pattern P11, the gain G11, and the BPF setting FL11 are associated with each other and stored in the storage unit 17.

Returning to FIG. 11, the description of the electronic apparatus 10A will be continued.
The control unit 14 identifies the transmission method by comparing the information included in the received transmission signal with the information on the transmission method stored in the storage unit 17, and identifies the reception setting based on the identified transmission method. . Furthermore, the control unit 14 selects a transmission setting corresponding to the specified reception setting. Then, the control unit 14 switches the setting switching unit 191 according to the selected transmission setting. Further, the control unit 14 generates a transmission signal including information indicating an identifier (ID), and outputs the generated transmission signal to the transmission circuit 19.

The transmission circuit 19 includes a setting switching unit 191, a filter 192, and an amplifier 193. The transmission circuit 19 transmits the transmission signal output from the control unit 14 using the filter 132 and the amplifier 133 switched by the setting switching unit 191 via the antenna 12. The transmission circuit 19 may include an encoding circuit and a modulation circuit.
The setting switching unit 191 switches settings of the filter 192 and the amplifier 193 under the control of the control unit 14. The filter 192 is, for example, a BPF (band pass filter). The amplifier 193 is an amplifier circuit.

Next, the reader device 20A will be described.
The reader device 20A further includes a receiving circuit 24.
The reception circuit 24 receives the transmission signal transmitted by the electronic device 10 </ b> A via the antenna 231. The receiving circuit 24 outputs the received transmission signal to the control unit 21.
The control unit 21 performs a decoding process and a demodulation process on the transmission signal output from the receiving circuit 24, and extracts, for example, information indicating an identifier. Then, the athlete wearing the electronic device 10A that has transmitted the transmission signal associates the time when the player passed the point 30 (FIG. 1) where the leader device 20A is installed with the identifier, and outputs it to an external device, for example.
Note that the receiving circuit 24 may perform, for example, decoding processing and demodulation processing on the received transmission signal.

  With this configuration, the electronic device 10A can transmit a transmission method based on a transmission signal transmitted by the reader device 20A even when there are a plurality of communication methods that can be received by the reader device 20A and the communication method is not known in advance. Can also be determined. As a result, the electronic device 10A can transmit a transmission signal to the reader device 20A in accordance with the communication method of the reader device 20A. The reader device 20A can receive the transmission signal transmitted by the electronic device 10A.

  In the examples shown in FIGS. 7, 8, and 12, the information about the transmission signal and the information about the reception setting are each of three types. However, the number of combinations of information to be stored is limited to this. Absent. The number of combinations of information stored in the storage unit 17 may be two or more. In addition, the control unit 14 acquires, for example, information related to these signals and information related to reception settings via the antenna 12 or an external terminal (not shown), and stores the acquired information in the storage unit 17. Also good. Further, the control unit 14 may update the information stored in the storage unit 17 based on the acquired information. As a result, the electronic device 10 or 10A can determine the type of transmission signal even when a combination of transmission signals not stored in the storage unit 17 is newly used, and according to the determination result. The reception setting can be switched. As a result, according to the present embodiment, the electronic device 10 or 10A can optimize the transmission signal without the competitor being aware of the format of the transmission signal transmitted by the leader device 20 or the leader device 20A used in the marathon event. Can be received in settings.

  The embodiment of the present invention has been described in detail above, but the specific configuration is not limited to the above-described one, and various design changes and the like can be made without departing from the scope of the present invention. is there.

In addition, you may make it implement | achieve part or all of the electronic devices 10 or 10A in embodiment mentioned above with a computer. In that case, the program for realizing the control function may be recorded on a computer-readable recording medium, and the program recorded on the recording medium may be read by the computer system and executed.
Here, the “computer system” is a computer system built in the electronic device 10 and includes an OS and hardware such as peripheral devices. The “computer-readable recording medium” is a portable medium such as a flexible disk, a magneto-optical disk, a flash memory, an EEPROM, a ROM, a RAM, a CD-ROM, or a storage device such as a hard disk built in a computer system. Or a storage medium configured by any combination thereof.

  Furthermore, the “computer-readable recording medium” means that the program is dynamically held for a short time, like a communication line when transmitting a program via a communication network such as the Internet or a communication line such as a telephone line. In this case, a volatile memory inside a computer system serving as a server or a client in that case may be included and a program held for a certain period of time. The program may be a program for realizing a part of the functions described above, and may be a program capable of realizing the functions described above in combination with a program already recorded in a computer system.

  Moreover, you may implement | achieve part or all of the electronic device 10 in embodiment mentioned above as integrated circuits, such as LSI (Large Scale Integration). Each functional block of the electronic device 10 may be individually made into a processor, or a part or all of them may be integrated into a processor. Further, the method of circuit integration is not limited to LSI, and may be realized by a dedicated circuit or a general-purpose processor. In addition, when an integrated circuit technology that replaces LSI appears due to the advancement of semiconductor technology, an integrated circuit based on the technology may be used.

DESCRIPTION OF SYMBOLS 1, 1A ... Measurement system 10, 10A ... Electronic device, 11 ... Time measuring part, 12 ... Antenna, 13 ... Reception circuit, 14 ... Control part, 15 ... Operation part, 16 ... Display part, 17 ... Memory | storage part, 18 ... Power supply unit, 19 ... transmission circuit, 20, 20A ... reader device, 21 ... control unit, 22 ... transmission circuit, 23 ... mat, 24 ... reception circuit, 30-1 ... start point, 30-2 to 30-4 ... gate Point, 30-5 ... Goal point, 131, 191 ... Setting switching unit, 132, 192 ... Filter, 133, 193 ... Amplifier, 231 ... Antenna

Claims (7)

  1. In an electronic device that receives electromagnetic waves transmitted from multiple points including some points and other points by a transmission method unique to the measurement system,
    A receiver for receiving the electromagnetic wave;
    A storage unit storing information related to the transmission method and information related to a reception method capable of receiving electromagnetic waves transmitted by the transmission method;
    The transmission method is identified and identified by comparing information included in the electromagnetic wave transmitted from the part received by the reception unit with information on the transmission method stored in the storage unit. A control unit for setting a reception method of an electromagnetic wave transmitted from the other point based on the transmission method;
    Electronic equipment comprising.
  2. The partial point includes two points,
    The controller is
    The method of setting the reception method of electromagnetic waves transmitted from the other points based on the specified transmission method when the transmission methods specified based on the electromagnetic wave received at the two points match each other. 1. The electronic device according to 1.
  3.   The electronic device according to claim 1, wherein the transmission method includes information including at least one of a pattern of an electromagnetic wave to be transmitted, a frequency of the electromagnetic wave to be transmitted, and an intensity of the electromagnetic wave to be transmitted.
  4. The reception method includes at least one of gain information associated with the transmission method when receiving the transmitted electromagnetic wave, and band information of a filter when receiving the transmitted electromagnetic wave,
    The receiver is
    4. The electronic device according to claim 1, further comprising a setting switching unit that switches a setting to the reception method associated with the transmission method. 5.
  5.   5. The electron according to claim 1, wherein the control unit receives an electromagnetic wave transmitted from a plurality of points according to the set reception method, and measures an interval between the received times. 6. machine.
  6.   2. The electronic timepiece according to claim 1, wherein the electronic device is an electronic timepiece having a timekeeping function for measuring time, and a display unit capable of displaying information based on electromagnetic waves received by the set reception method and the time. The electronic device according to any one of 5.
  7. Information on the electromagnetic wave transmission method and information on the reception method capable of receiving the electromagnetic wave transmitted by the transmission method are stored in the storage unit, and a plurality of points including some points and other points by a specific transmission method To the computer of the electronic device that receives the electromagnetic waves transmitted from
    A receiving procedure for receiving electromagnetic waves;
    A specific procedure for identifying the transmission method by comparing information included in the electromagnetic wave transmitted from the part of the points received by the reception procedure with information on the transmission method stored in the storage unit; ,
    A procedure for setting a reception method for electromagnetic waves transmitted from the other points based on the transmission method specified by the specification procedure;
    An electronic device control program that executes
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JPH06289162A (en) * 1993-04-01 1994-10-18 Seiko Epson Corp Stopwatch device
JP4824195B2 (en) * 2001-05-18 2011-11-30 日本信号株式会社 Writer and a control method thereof for contactless ic card
JP4810484B2 (en) * 2007-03-29 2011-11-09 シチズンホールディングス株式会社 Radio-controlled timepiece
US7969314B2 (en) * 2007-03-30 2011-06-28 Nike, Inc. RFID triggered personal athletic device
JP5113566B2 (en) * 2008-03-13 2013-01-09 公益財団法人鉄道総合技術研究所 A communication control method, guiding cane, a portable electronic device and control program
US9607443B2 (en) * 2013-02-25 2017-03-28 Peter Randall Harvey Portable race device for displaying real-time race information

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