JP2018025568A - Receiving device, electronic clock, radio wave reception method, and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress unnecessary power consumption due to GPS radio wave reception.SOLUTION: A GPS receiving device 1 comprises a GPS part 17, a walking state detection part 51, a walking information storage part 71, a walking determination part 52, and a GPS control part 53. The GPS part 17 receives a GPS radio wave. The walking state detection part 51 determines a walking state of a wearer continuously at predetermined intervals. The walking information storage part 71 stores the walking state determined by the walking state detection part 51. The walking determination part 52 determines whether the device is in a state in which the GPS radio wave can be received on the basis of a series of walking states stored by the walking information storage part 71. The GPS control part 53 makes GPS radio wave reception means receive the GPS radio wave when the walking determination part 52 determines that the device is in a state in which the radio wave can be received.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a GPS receiver, an electronic timepiece, a control method, and a program.

Conventionally, there is a clock that corrects the time by using GPS (Global Positioning System). In such a timepiece, GPS radio waves are received in order to adjust the time of the clock to the time using the accurate time of the rubidium atomic clock of the GPS satellite.
To receive GPS radio waves, you must be in an environment where GPS radio waves from GPS satellites can be acquired. If you are indoors, such as in a building, you cannot receive GPS radio waves from GPS satellites, so you can correct the time. There is no problem. Therefore, there is a technique for determining whether the time is indoor or outdoor based on the illuminance of sunlight hitting a solar panel as a charging device, and automatically adjusting the time (Patent Document 1).

JP 2008-39565 A

  However, the technique described in Patent Document 1 as described above is an effective method for a person who is active outdoors during daytime hours when sunlight is shining, but the watch is hidden under the long sleeves. If you cannot get enough illuminance or go out at night when there is no sunlight, it will be determined that the GPS signal is not receivable, so the time can be corrected automatically. There was a drawback of not.

  The present invention has been made in view of such a situation, and it is possible to determine whether GPS radio waves can be received without making the user aware of the situation, and to reliably receive GPS radio waves according to the determination. Further, an object of the present invention is to provide a GPS receiver, an electronic timepiece, a control method, and a program that suppress unnecessary power consumption because unnecessary GPS radio wave reception is not performed when reception is not possible.

In order to achieve the above object, a GPS receiver according to one aspect of the present invention provides:
GPS radio wave receiving means for receiving GPS radio waves;
Walking state determination means for continuously determining the walking state of the wearer at a predetermined interval;
Storage means for storing the walking state determined by the walking state determination means;
Determination means for determining whether or not GPS radio waves can be received based on the series of walking states stored in the storage means;
Control means for causing the GPS radio wave receiving means to receive GPS radio waves when it is determined by the determining means to be in a receivable state;
With
The determination means determines that a GPS radio wave can be received when the series of walking states are linear walkings and have continued for a predetermined time or longer.

  According to the present invention, it is possible to determine whether or not GPS radio wave reception can be received without making the user aware of it. If reception is possible, GPS radio wave reception can be reliably performed, and further reception is possible. If not, unnecessary GPS radio wave reception is not performed, so that power consumption can be suppressed.

It is a block diagram which shows the hardware constitutions of the GPS receiver which concerns on one Embodiment in the information processing apparatus of this invention. It is a functional block diagram which shows the functional structure for performing an automatic time correction process among the functional structures of the GPS receiver of FIG. 3 is a flowchart for explaining the flow of automatic time correction processing according to the first embodiment in the GPS receiver of FIG. 1 having the functional configuration of FIG. 3 is a flowchart for explaining the flow of automatic time correction processing of the second embodiment in the GPS receiver of FIG. 1 having the functional configuration of FIG. 2. FIG. 6 is a flowchart for explaining a flow of automatic time correction processing according to a third embodiment in the GPS receiver of FIG. 1 having the functional configuration of FIG. 2.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

<First Embodiment>
FIG. 1 is a block diagram showing a hardware configuration of a GPS receiver according to an embodiment of the information processing apparatus of the present invention.
The GPS receiver 1 is configured as a wristwatch type terminal, for example.

  The GPS receiver 1 includes a CPU (Central Processing Unit) 11, a ROM (Read Only Memory) 12, a RAM (Random Access Memory) 13, a bus 14, an input / output interface 15, a sensor unit 16, and a GPS unit. 17, an input unit 18, a clock unit 19, a storage unit 20, and a communication unit 21.

  The CPU 11 executes various processes according to a program recorded in the ROM 12 or a program loaded from the storage unit 20 to the RAM 13.

  The RAM 13 appropriately stores data necessary for the CPU 11 to execute various processes.

  The CPU 11, ROM 12, and RAM 13 are connected to each other via a bus 14. An input / output interface 15 is also connected to the bus 14. A sensor unit 16, a GPS unit 17, an input unit 18, a clock unit 19, a storage unit 20, and a communication unit 21 are connected to the input / output interface 15.

The sensor unit 16 is composed of a sensor that can detect the movement of the apparatus, and is composed of, for example, an acceleration sensor, a direction sensor, or the like.
The GPS unit 17 is configured to be able to receive GPS radio waves used for time correction from at least one satellite.

The input unit 18 includes various buttons and the like, and inputs various types of information according to user instruction operations.
The clock unit 19 is configured to be able to display a digital or analog clock.
The storage unit 20 is configured by a hard disk, a DRAM (Dynamic Random Access Memory), or the like, and stores various image data.
The communication unit 21 controls communication with other devices (not shown) via a network including the Internet.

The GPS receiving apparatus 1 configured as described above has a function of not performing the operation of receiving the GPS radio wave when it is in a place where the GPS radio wave cannot be received. For this reason, since the GPS receiver 1 does not perform unnecessary GPS radio wave reception operation, power consumption can be suppressed.
Specifically, the GPS receiver 1 estimates the state of the user wearing the device from the moving state of the device, and determines whether it is indoors where GPS radio waves cannot be received or outdoors where GPS radio waves can be received. When it is determined that the vehicle is outdoors, a GPS radio wave reception operation is performed.
In the present embodiment, the determination of being outdoors is performed based on whether or not the user is walking continuously for a predetermined time. This is because outdoor is a wide range, unlike indoors, and thus has a high probability of not walking continuously for a predetermined time. In addition, by making walking a periodic vibration, it is difficult to obtain a periodic vibration even if it moves cyclically in a narrow range such as indoors or moves irregularly. It can be determined as indoor.

FIG. 2 is a functional block diagram showing a functional configuration for executing the automatic time correction process among the functional configurations of the GPS receiver 1 as described above.
Automatic time correction processing determines whether GPS radio wave reception is possible, and if GPS radio wave reception is possible, performs the process of performing GPS radio wave reception and correcting the time. Say.

As shown in FIG. 2, in the automatic time correction process, in the CPU 11, a walking state detection unit 51, a walking determination unit 52, a GPS control unit 53, and a time correction unit 54 function.
A walking information storage unit 71 and a GPS information storage unit 72 are set in one area of the storage unit 20.

  The walking information storage unit 71 stores walking information on the walking state such as the number of steps, the walking pitch, and the walking direction acquired from the sensor unit 16. The walking information storage unit 71 also stores walking time. The walking information storage unit 71 stores walking vibration cycles of a general user (for example, a general adult male) or the walking vibrations calculated using the number of steps and the walking pitch in the past. The period is memorized.

  The GPS information storage unit 72 stores a GPS value acquired from the GPS unit 17. The GPS information storage unit 72 also stores the time when the GPS value was acquired in the past.

  The walking state detection unit 51 detects a walking state. Specifically, the walking state detection unit 51 detects the presence or absence of walking vibration from the sensor information from the sensor unit 16, and acquires walking information on the walking state such as the number of steps, the walking pitch, and the walking direction. The acquired walking information such as the number of steps, the walking pitch, and the walking direction is stored in the walking information storage unit 71.

The walking determination unit 52 determines whether or not it is outdoors where GPS radio waves can be received from the walking information of a series of walking states stored in the detected walking information storage unit 71. Specifically, the walking determination unit 52 determines that the walking state is the walking state when the detected walking pitch matches the past walking pitch (in this embodiment, 2 Hz which is a vibration cycle of a general user). Furthermore, if the time of continuous walking in the series of walking states is equal to or longer than a predetermined time (1 minute in the present embodiment), it is determined that the outdoor area is capable of receiving GPS radio waves.
In the present embodiment, the time during which the number of steps is counted, that is, the time during which walking is performed is used as an element for determining walking. However, the number of steps may be simply used as an element for determining walking. The past walking pitch may be a general walking pitch calculated from statistics or the like, or may be a user-specific walking pitch.
Further, the walking determination unit 52 may determine walking by considering past detection times in addition to the detected walking information of the walking state.

  The GPS control unit 53 controls activation and reception of the GPS unit 17 and stores the received GPS value in the GPS information storage unit 72. Specifically, the GPS control unit 53, such as a GPS unit that activates the GPS unit 17 to enable reception of radio waves from GPS when the walking determination unit 52 determines that it is walking. 17 is controlled. In addition, the GPS control unit 53 confirms and determines the reception intensity of radio waves from the GPS in the GPS unit 17.

  The time correction unit 54 corrects the time of the clock unit 19 based on the GPS value stored in the GPS information storage unit 72.

FIG. 3 is a flowchart for explaining the flow of automatic time correction processing executed by the GPS receiver 1 of FIG. 1 having the functional configuration of FIG.
The automatic time correction process is started when a time correction timing that is a predetermined reception time comes in step S11.

In step S11, the CPU 11 determines whether it is time correction timing. That is, the CPU 11 determines whether or not the predetermined reception time has come and the time correction time has come.
When it is not the time correction timing, it is determined as NO in step S11, and it is in a standby state until the time correction timing is reached.
If it is time correction timing, YES is determined in step S11, and the process proceeds to step S12.

  In step S12, the CPU 11 starts counting time-out.

In step S <b> 13, the CPU 11 determines whether there is vibration based on the sensor information from the sensor unit 16.
If there is no vibration, it is determined as NO in step S13, and the automatic time correction process ends.
If there is vibration, YES is determined in step S13, and the process proceeds to step S14.

In step S14, the CPU 11 determines whether or not a timeout has occurred. That is, the CPU 11 determines whether or not a predetermined time has elapsed since the start of the timeout count and the timeout has occurred.
If timed out, it is determined as NO in step S14, and the automatic time correction process ends.
If not timed out, YES is determined in step S14, and the process proceeds to step S15.

In step S <b> 15, the walking state detection unit 51 determines whether or not the walking state is based on the sensor information from the sensor unit 16.
When it is not a walking state, it determines with NO in step S15, and a process progresses to step S24. The processing after step S24 will be described later.
If it is a walking state, it is determined as YES in Step S15, and the process proceeds to Step S16.

  In step S <b> 16, the walking state detection unit 51 acquires the number of steps and the walking pitch from the sensor information from the sensor unit 16, and stores it in the walking information storage unit 71.

In step S17, the walking determination unit 52 determines whether or not the walking pitch is stable. In this example, when the walking pitch of 2 Hz is stably detected, it is determined that the walking is stable.
If the walking pitch is not stable, NO is determined in step S17, and the process proceeds to step S24.
If the walking pitch is stable, YES is determined in step S17, and the process proceeds to step S18.

  In step S18, the walking determination unit 52 counts the continuous walking time for determination of outdoor walking.

In step S19, the walking determination unit 52 performs outdoor determination. That is, the walking determination unit 52 determines outdoor as the outdoor determination in this example when the continuous walking time of 1 minute or more is counted, and determines indoor when it is less than 1 minute.
If the outdoor determination is made indoor, it is determined NO in step S19, and the process returns to step S13.
If the outdoor determination is made outdoor, YES is determined in step S19, and the process proceeds to step S20.

  In step S <b> 20, the GPS control unit 53 activates the GPS unit 17 because the walking determination unit 52 determines that the walking is outdoors.

In step S21, the GPS control unit 53 determines whether or not the GPS unit 17 has high GPS radio wave reception sensitivity.
If the reception sensitivity is low, NO is determined in step S21, and the process proceeds to step S25. The processing after step S25 will be described later.
If the reception sensitivity is high, YES is determined in step S21, and the process proceeds to step S22.

  In step S22, the GPS control unit 53 receives the GPS radio wave from the GPS unit 17. The GPS control unit 53 stores the received GPS radio wave as a GPS value in the GPS information storage unit 72.

In step S <b> 23, the time correction unit 54 corrects the time of the clock unit 19 based on the GPS value stored in the GPS information storage unit 72.
As a result, the GPS receiving apparatus 1 can suppress wasteful power consumption without performing GPS reception when it is not outdoors, and can perform time correction by GPS only when it is outdoors where GPS can be received.

  In step S24, the walking determination unit 52 resets the continuous walking time.

In step S25, the CPU 11 determines whether or not FG = 1. That is, the CPU 11 checks the flag because the reception sensitivity is low and an accurate GPS radio wave cannot be received.
When FG = 0, the retry flag is not set. When FG = 1, the reception sensitivity after the retry flag is already set is in a low state. Therefore, the automatic time correction process is terminated in order to reduce power consumption.
In the case of FG = 1, it is determined as YES in Step S25, and the automatic time correction process is ended.
If FG = 1 is not satisfied, NO is determined in step S25, and the process proceeds to step S26.

  In step S26, the CPU 11 sets a retry FG (FG = 1). Then, the process returns to step S13.

<Second Embodiment>
In the first embodiment, the outdoor determination is configured to count the continuous walking time, and when the continuous walking time is counted for a predetermined time or more, it is determined to be outdoor. On the other hand, in the second embodiment, the outdoor determination is performed by counting the time when the user walks linearly in the same direction from the traveling direction (hereinafter referred to as “straight walk time”), and the straight walk time is equal to or longer than a predetermined time. Is counted, it is determined to be outdoor. The reason why the vehicle continuously moves in a specific direction is that it is not a narrow indoor space but has a high probability of outdoor, and thus becomes a criterion for outdoor determination.
In the following description, the description is omitted when the configuration is the same as that of the first embodiment.

When executing the automatic time correction process in the second embodiment, in the CPU 11, the walking state detection unit 51 and the walking determination unit 52 are different from those in the first embodiment.
That is, the walking state detection unit 51 acquires the traveling direction from the sensor unit 16. Thereafter, the walking state detection unit 51 stores the acquired traveling direction information in the walking information storage unit 71.
The walking determination unit 52 counts the straight walking time. And the walk determination part 52 determines with the outdoors, when the counted straight walk time is more than fixed time.

FIG. 4 is a flowchart for explaining the flow of the automatic time correction process of the second embodiment in the GPS receiver of FIG. 1 having the functional configuration of FIG.
In this example, steps S116 to S119 and step S124 are different from the flowchart of FIG. 3 of the first embodiment.

  In step S <b> 116, the walking state detection unit 51 acquires the traveling direction from the sensor information from the sensor unit 16 and stores it in the walking information storage unit 71.

In step S117, the walking determination unit 52 determines whether or not the vehicle travels straight on the basis of the traveling direction.
If it is not a straight line, NO is determined in step S117, and the process proceeds to step S124.
In the case of straight progress, YES is determined in step S117, and the process proceeds to step S118.

  In step S118, the walking determination unit 52 counts the straight traveling time for determination of outdoor walking.

In step S119, the walking determination unit 52 performs outdoor determination. In other words, as an outdoor determination, the walking determination unit 52 determines outdoor when the straight traveling time of 1 minute or more is counted, and determines indoor when it is less than 1 minute.
If the outdoor determination is made indoor, it is determined NO in step S119, and the process returns to step S113.
If the outdoor determination is made outdoor, YES is determined in step S119, and the process proceeds to step S120.
By configuring the automatic time correction process of the second embodiment as described above, a case where a predetermined direction is walked for a predetermined time can be determined as outdoor, and GPS radio waves can be received under the circumstances. it can.

<Third Embodiment>
In the first embodiment, the outdoor determination is configured to count the continuous walking time, and when the continuous walking time is counted for a predetermined time or more, it is determined to be outdoor. On the other hand, in the third embodiment, outdoor determination counts the cumulative time of walking within a certain time (hereinafter referred to as “cumulative walking time”), and counts the cumulative walking time over a predetermined time. If so, it is determined to be outdoor.
In the following description, the description is omitted when the configuration is the same as that of the first embodiment.

When executing the automatic time correction processing in the third embodiment, the walking determination unit 52 is different from the first embodiment in the CPU 11.
That is, the walking determination unit 52 counts the accumulated walking time. And the walk determination part 52 determines with the outdoors, when the accumulation walk time within a fixed time is more than fixed time.

FIG. 5 is a flowchart for explaining the flow of the automatic time correction process of the third embodiment in the GPS receiver of FIG. 1 having the functional configuration of FIG.
In this example, steps S218 and S219 are different from the flowchart of FIG. 3 of the first embodiment. Moreover, the process of step S24-step S26 of 1st Embodiment is simplified and abbreviate | omitted.

  In step S218, the walking determination unit 52 counts the accumulated walking time for determination of outdoor walking.

In step S219, the walking determination unit 52 performs outdoor determination. That is, in this example, the walking determination unit 52 determines that the walking time is 5 minutes or more within 10 minutes before the time-out, and the walking determination unit 52 determines that it is outdoor and is less than 5 minutes. In the case, it is determined to be indoor.
When the outdoor determination is made indoor, it is determined NO in step S219, and the process returns to step S213.
If the outdoor determination is made outdoor, YES is determined in step S219, and the process proceeds to step S220.
By configuring the automatic time correction process of the third embodiment as described above, it is possible to determine a cumulative walking time of a predetermined time or more as outdoor, and to receive GPS radio waves under the circumstances. it can.

The GPS receiver 1 configured as described above includes the GPS unit 17, the walking state detection unit 51, the walking information storage unit 71, the walking determination unit 52, and the GPS control unit 53.
The GPS unit 17 receives GPS radio waves.
The walking state detection unit 51 continuously determines the walking state of the wearer at predetermined intervals.
The walking information storage unit 71 stores the walking state determined by the walking state detection unit 51.
The walking determination unit 52 determines whether the GPS radio wave can be received based on a series of walking states stored in the walking information storage unit 71.
When it is determined by the walking determination unit 52 that the GPS control unit 53 is in a receivable state, the GPS control unit 53 causes the GPS radio wave receiving means to receive GPS radio waves.
Thereby, in the GPS receiver 1, it is possible to determine whether or not GPS can be received even during the day and night by using the walking state as a determination criterion, and perform a reception operation in a state where GPS reception is not possible. Therefore, GPS can be reliably received and used for time correction without consuming unnecessary power. In other words, the GPS receiver 1 can determine whether or not GPS radio wave reception can be received without making the user aware of it, and can reliably receive GPS radio waves if it can be received. If it is not receivable, unnecessary GPS radio wave reception is not performed, so that power consumption can be suppressed.

The walking determination unit 52 determines that a GPS radio wave can be received when the series of walking states stored in the detected walking information storage unit 71 continues for a predetermined time or longer. .
As a result, the GPS receiving device 1 can reliably determine the walking state, and since the receiving operation is not performed in a state where GPS reception is not possible, the GPS receiving device 1 can be surely received without consuming unnecessary power. Can be received and used for time correction.

In addition, the walking determination unit 52 determines that the GPS radio wave can be received when the series of walking states is linear walking and continues for a predetermined time or more.
Thereby, in the GPS receiver 1, it becomes possible to reliably determine the walking state by using the linear movement (traveling azimuth) and the movement time as the determination elements, and the GPS reception is not possible. Since no operation is performed, GPS can be reliably received and time correction can be performed without consuming unnecessary power.

In addition, the walking determination unit 52 determines that the GPS radio wave can be received when the cumulative walking time of the series of walking states within a predetermined time is equal to or longer than a predetermined time.
This makes it possible to reliably determine the walking state by using the accumulated walking time within a certain time as a determination factor, and unnecessary power consumption because the receiving operation is not performed in a state where GPS reception is not possible. The GPS can be reliably received and time correction can be performed without the need to

  In addition, this invention is not limited to the above-mentioned embodiment, The deformation | transformation in the range which can achieve the objective of this invention, improvement, etc. are included in this invention.

  In the above-described embodiment, the walking state is detected from the sensor unit 16. However, the present invention is not limited to this. For example, the walking state information may be acquired from an external device provided with sensor means. it can.

  In the above-described embodiment, the wristwatch type terminal having the GPS receiving function is configured. However, the GPS function is configured to be mounted on an external device, and the devices, for example, BLE (Bluetooth (registered trademark)) Watch, etc. Between a watch-type terminal equipped with a communication function and a GPS-Pod or a watch-type terminal equipped with a communication function such as BLE Watch and a GPS-equipped terminal (for example, a smartphone). If it is installed, the same function can be realized by estimating outdoor walking.

In the above-described embodiment, it is only necessary to be able to determine whether it is outdoor or indoor. For example, by using the characteristic that the atmospheric pressure differs between indoor and outdoor, it is determined whether it is indoor or outdoor by looking at the atmospheric pressure state of the atmospheric pressure sensor means You may comprise.
Specifically, the determination means provided in the GPS receiver 1 may be configured to use the movement direction and the movement time as the determination elements for the walking state.

In the above-described embodiment, there is an outdoor determination element that uses a specific state continuously for a predetermined time or more as a determination element. However, the present invention is not limited to this, and the specific state is discontinuous. However, it can be configured so that the cumulative element is determined as a determination factor.
Specifically, the walking determination unit 52 is configured to use a cumulative time instead of a continuous time as a determination element for a walking state when time is used as a determination element.

In the above-described embodiment, the GPS receiver 1 to which the present invention is applied has been described using a wristwatch type terminal as an example, but is not particularly limited thereto.
For example, the present invention can be applied to general electronic devices having an automatic time correction processing function. Specifically, for example, the present invention can be applied to a notebook personal computer, a printer, a television receiver, a video camera, a portable navigation device, a mobile phone, a smartphone, a portable game machine, and the like.

The series of processes described above can be executed by hardware or can be executed by software.
In other words, the functional configuration of FIG. 2 is merely an example and is not particularly limited. That is, it is sufficient that the GPS receiving apparatus 1 has a function capable of executing the above-described series of processing as a whole, and what kind of functional block is used to realize this function is not particularly limited to the example of FIG. .
In addition, one functional block may be constituted by hardware alone, software alone, or a combination thereof.

When a series of processing is executed by software, a program constituting the software is installed on a computer or the like from a network or a recording medium.
The computer may be a computer incorporated in dedicated hardware. The computer may be a computer capable of executing various functions by installing various programs, for example, a general-purpose personal computer.

  A recording medium including such a program includes a recording medium provided to the user in a state of being incorporated in advance in the apparatus main body distributed separately from the apparatus main body in order to provide the user with the program. The recording medium is composed of, for example, a magnetic disk (including a floppy disk), an optical disk, a magneto-optical disk, or the like. The optical disc is composed of, for example, a CD-ROM (Compact Disk-Read Only Memory), a DVD (Digital Versatile Disc), a Blu-ray Disc (Blu-ray Disc) (registered trademark), and the like. The magneto-optical disk is configured by an MD (Mini-Disk) or the like. In addition, the recording medium provided to the user in a state of being preliminarily incorporated in the apparatus main body includes, for example, the ROM 12 in FIG. 1 in which a program is recorded, the hard disk included in the storage unit 20 in FIG.

  In the present specification, the step of describing the program recorded on the recording medium is not limited to the processing performed in time series along the order, but is not necessarily performed in time series, either in parallel or individually. The process to be executed is also included.

  As mentioned above, although several embodiment of this invention was described, these embodiment is only an illustration and does not limit the technical scope of this invention. The present invention can take other various embodiments, and various modifications such as omission and replacement can be made without departing from the gist of the present invention. These embodiments and modifications thereof are included in the scope and gist of the invention described in this specification and the like, and are included in the invention described in the claims and the equivalent scope thereof.

The invention described in the scope of claims at the beginning of the filing of the present application will be appended.
[Appendix 1]
GPS radio wave receiving means for receiving GPS radio waves;
Walking state determination means for continuously determining the walking state of the wearer at a predetermined interval;
Storage means for storing the walking state determined by the walking state determination means;
Determination means for determining whether or not GPS radio waves can be received based on the series of walking states stored in the storage means;
Control means for causing the GPS radio wave receiving means to receive GPS radio waves when it is determined by the determining means to be in a receivable state;
A GPS receiving device comprising:
[Appendix 2]
The determination means determines that a GPS radio wave can be received in a case where the series of walking states are continuous for a predetermined time or more,
The GPS receiver according to appendix 1, wherein:
[Appendix 3]
The determination means determines that the GPS radio wave can be received when the series of walking states is linear walking and has continued for a predetermined time or more.
The GPS receiver according to appendix 2, wherein
[Appendix 4]
The determination means determines that a GPS radio wave can be received when a cumulative walking time of the series of walking states within a predetermined time is a predetermined time or more,
The GPS receiver according to appendix 1, wherein:
[Appendix 5]
An electronic timepiece comprising the GPS receiver according to any one of appendix 1 to appendix 4.
[Appendix 6]
A control method executed by a GPS receiver,
A GPS radio wave receiving step for receiving GPS radio waves;
A walking state determination step for continuously determining the walking state of the wearer at predetermined intervals;
A storage step for storing the walking state determined by the walking state determination step;
A determination step of determining whether or not GPS radio waves can be received based on the series of walking states stored in the storage step;
A control step that causes the GPS radio wave reception step to receive a GPS radio wave when it is determined that the signal is receivable by the determination step;
The control method characterized by including.
[Appendix 7]
A computer that controls the GPS receiver;
GPS radio wave receiving means for receiving GPS radio waves,
Walking state determining means for continuously determining the walking state of the wearer at predetermined intervals;
Storage means for storing the walking state determined by the walking state determination means;
Determination means for determining whether or not GPS radio waves can be received based on the series of walking states stored in the storage means;
Control means for causing the GPS radio wave reception means to receive GPS radio waves when the determination means determines that the signal can be received;
A program characterized by functioning as

  DESCRIPTION OF SYMBOLS 1 ... GPS receiver, 11 ... CPU, 12 ... ROM, 13 ... RAM, 14 ... Bus, 15 ... Input / output interface, 16 ... Sensor part 16 ... GPS unit, 18 ... input unit, 19 ... clock unit, 20 ... storage unit, 21 ... communication unit, 51 ... walking state detection unit, 52 ... walking determination unit 52 ... GPS control unit, 54 ... time correction unit, 71 ... walking information storage unit, 72 ..., GPS information storage unit

The present invention, receiving device, an electronic timepiece, for radio receiving method and a program.

To achieve the above object, receiving device of one embodiment of the present invention,
A satellite radio receiver for receiving radio waves from a satellite,
A detector that detects movement at predetermined intervals;
A control unit;
With
The controller is
The receiving operation of the satellite radio wave receiving unit is controlled based on a detection time of linear movement by the detecting unit .

Claims (5)

GPS radio wave receiving means for receiving GPS radio waves;
Walking state determination means for continuously determining the walking state of the wearer at a predetermined interval;
Storage means for storing the walking state determined by the walking state determination means;
Determination means for determining whether or not GPS radio waves can be received based on the series of walking states stored in the storage means;
Control means for causing the GPS radio wave receiving means to receive GPS radio waves when it is determined by the determining means to be in a receivable state;
With
The GPS receiver according to claim 1, wherein the determination unit determines that the GPS radio wave can be received when the series of walking states are linear walkings and are continued for a predetermined time or more. The determination means determines that a GPS radio wave can be received when a cumulative walking time of the series of walking states within a predetermined time is a predetermined time or more,
The GPS receiver according to claim 1.   An electronic timepiece comprising the GPS receiver according to claim 1. A control method executed by a GPS receiver,
A GPS radio wave receiving step for receiving GPS radio waves;
A walking state determination step for continuously determining the walking state of the wearer at predetermined intervals;
A storage step for storing the walking state determined by the walking state determination step;
A determination step of determining whether or not GPS radio waves can be received based on the series of walking states stored in the storage step;
A control step that causes the GPS radio wave reception step to receive a GPS radio wave when it is determined that the signal is receivable by the determination step;
Including
The determination step is characterized by determining that a GPS radio wave is receivable when the series of walking states is linear walking and continues for a predetermined time or more. A computer that controls the GPS receiver;
GPS radio wave receiving means for receiving GPS radio waves,
Walking state determining means for continuously determining the walking state of the wearer at predetermined intervals;
Storage means for storing the walking state determined by the walking state determination means;
Determination means for determining whether or not GPS radio waves can be received based on the series of walking states stored in the storage means;
Control means for causing the GPS radio wave reception means to receive GPS radio waves when the determination means determines that the signal can be received;
Function as
The determination means determines that a GPS radio wave can be received when the series of walking states are linear walkings and have continued for a predetermined time or more.

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