JP2008039565A - Electronic device and time adjustment method for electronic device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electronic apparatus etc. capable of preventing a power consumption from increasing and highly accurately correcting time. <P>SOLUTION: A wrist watch 10 with GPS is the electronic apparatus comprising both a GPS device 23, a reception part for capturing position information satellites etc. orbiting around the Earth and receiving signals from the position information satellites, and a time display part for generating time correction information on the basis of satellite signals received by the GPS device 23 and correcting and displaying display time information on the basis of the time correction information. The GPS device 23 is provided with a solar panel type charging device 24 and an acceleration-sensor output-waveform generating device 29 as indoor/outdoor determination parts which determine environments of the wrist watch 10 with GPS. The position information satellites etc. are captured in the case where it has been determined on the basis of the indoor/outdoor determination parts that the wrist watch 10 with GPS is outdoor. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an electronic device and a time correction method for an electric device that perform time correction based on a signal from, for example, a GPS satellite.

In the GPS (Global Positioning System) system, which is a system for positioning its own position, a GPS satellite having an orbit around the earth is used. This GPS satellite is equipped with an atomic clock and is extremely accurate. Time is being measured.
For the GPS receiver, a method for correcting the time of the clock in the GPS receiver using the data of the atomic clock that is a reference clock in the GPS satellite has been proposed in order to realize highly accurate positioning (for example, Patent Document 1).
However, in order to acquire atomic clock data from a GPS satellite, it is necessary to capture the GPS satellite and synchronize with the GPS satellite signal.
The GPS satellite is constantly moving, and in order to capture it, it is necessary to predict and capture the position of the GPS satellite from the orbit data of the GPS satellite.
Furthermore, in order to obtain accurate time display data, it is necessary to acquire at least four GPS satellites.
In addition, it usually takes time to capture four moving GPS satellites. In addition to this, if a watch that constantly moves with the user is equipped with a GPS satellite signal receiver, the receiver is also In some cases, the robot moves together, for example, indoors, in an environment where GPS satellites cannot be captured.
JP-A-8-15463 (paragraph "0001" etc.)

  In this way, even in an environment where GPS satellites cannot be captured, if the receiving unit of the GPS receiver is activated to capture GPS satellites, current consumption is applied, for example, about 100 mA at peak times. Therefore, when the receiving unit is mounted on a small electronic device such as a watch, there is a problem that the duration and the battery size are restricted.

  Accordingly, the present invention provides an electronic device and a time correction method for the electronic device that can reduce power consumption by minimizing the drive time of the receiving unit even in an electronic device that requires ultra-low power. The purpose is to do.

  According to the present invention, the problem is that, according to the present invention, a position information satellite that orbits the earth is captured and a signal is received from the position information satellite, and time correction information is based on the satellite signal received by the receiver. And a time information correction display unit that corrects and displays the display time information based on the time correction information, and the reception unit determines whether the environment of the electronic device is indoor or outdoor. And an electronic device configured to capture the position information satellite based on the indoor / outdoor determination unit.

According to the above configuration, the receiving unit that captures the position information satellite that orbits the earth and receives a signal from the position information satellite includes the indoor / outdoor determination unit that determines the environment of the electronic device, and the indoor / outdoor determination The position information satellite is captured based on the unit.
That is, in the above configuration, the receiving unit captures the position information satellite based on the result of determining the environment of the electronic device by the indoor / outdoor determination unit that determines the environment of the electronic device.

  Preferably, the indoor / outdoor determination unit includes a solar panel, a power generation amount detection data storage unit that detects a power generation amount from the solar panel and acquires and stores power generation amount detection data, and an indoor / outdoor of the reception unit. A power generation amount threshold value data storage unit that stores power generation amount threshold value data relating to a power generation amount threshold value for determining the power generation amount threshold value, and the indoor / outdoor determination unit includes the power generation amount detection data storage unit of the indoor / outdoor determination unit. This is achieved by an electronic device characterized in that the environment of the electronic device is determined based on the power generation amount data and the power generation amount threshold data of the power generation amount threshold data storage unit.

  In the above-described configuration, the indoor / outdoor determination unit includes a solar panel, a power generation amount detection data storage unit that detects a power generation amount from the solar panel and acquires and stores the power generation amount detection data, and a power generation unit that determines whether the reception unit is indoors or outdoors. A power generation amount threshold value data storage unit that stores power generation amount threshold value data relating to the amount threshold, and the power generation amount data of the power generation amount detection data storage unit of the indoor / outdoor determination unit and the power generation amount threshold value data storage unit The environment of the electronic device is determined based on the power generation amount threshold data.

The indoor / outdoor determination unit detects the power generation amount of the solar panel provided in the electronic device, and generates the power generation amount threshold value data storage unit that stores the detected power generation amount and a threshold value of the power generation amount that determines whether the electronic device is indoors or outdoors. The amount threshold value is compared to determine whether or not the threshold value is greater than or equal to the threshold value, and indoor / outdoor is determined. Based on this determination, the receiving unit determines whether or not to perform a receiving operation to acquire the position information satellite. Therefore, when the power generation amount is smaller than the threshold value, the indoor / outdoor determination unit determines that the electronic device is indoor, and the reception unit does not perform a reception operation based on this determination. Conversely, when the power generation amount is equal to or greater than the threshold, the indoor / outdoor determination unit determines that the electronic device is outdoors, and the reception unit performs a reception operation based on this determination.
For this reason, it is possible to prevent wasteful power consumption by performing a reception operation even in an environment where the reception unit cannot receive. Further, the battery can be charged by power generation from the solar panel, and the power lost by the receiving operation can be compensated.

  Preferably, the indoor / outdoor determination section includes an acceleration sensor, an acceleration sensor detection data storage section for storing acceleration sensor output waveform data obtained by detecting an output waveform from the acceleration sensor, and the acceleration sensor output waveform. A generated waveform amplitude data storage unit that generates and stores amplitude data from data, an acceleration threshold data storage unit that stores acceleration sensor output waveform amplitude threshold data related to the threshold value of the amplitude data that determines whether the receiving unit is indoors or outdoors, The indoor / outdoor determination unit is based on the amplitude data from the acceleration sensor of the indoor / outdoor determination unit and the acceleration sensor output waveform amplitude threshold data of the acceleration threshold data storage unit. This is achieved by an electronic device configured to determine the environment.

  In the above configuration, the indoor / outdoor determination unit generates amplitude data from the acceleration sensor, the acceleration sensor detection data storage unit that stores output waveform data obtained by detecting the output waveform from the acceleration sensor, and the output waveform data. And a generated waveform amplitude data storage unit for storing and an acceleration threshold value data storage unit for storing acceleration sensor output waveform amplitude threshold value data relating to the threshold value of the amplitude data for determining whether the reception unit is indoors or outdoors. The determination unit determines the environment of the electronic device based on the amplitude data and the acceleration sensor output waveform amplitude threshold data of the acceleration threshold data storage unit.

The indoor / outdoor determination unit detects an output waveform from an acceleration sensor provided in the electronic device, generates amplitude data of the waveform based on the detected output waveform, and determines the amplitude data and the amplitude for determining whether the electronic device is indoors or outdoors. The threshold data is compared to determine whether the amplitude data is equal to or greater than the threshold, thereby determining whether the electronic device is indoors or outdoors. Based on this determination, the receiving unit determines whether or not to perform a receiving operation in order to acquire the position information satellite. Therefore, when the amplitude data is smaller than the threshold value, the indoor / outdoor determination unit determines that the electronic device is indoors. Then, based on this determination, the receiving unit does not perform a receiving operation. Conversely, when the amplitude data is greater than or equal to the threshold value, the indoor / outdoor determination unit determines that the electronic device is outdoors. The receiving unit performs a receiving operation based on this determination.
For this reason, it is possible to prevent wasteful power consumption by performing a reception operation even in an environment where the reception unit cannot receive. And since it judges by the amplitude of the output waveform by an acceleration sensor, it becomes possible to judge indoors and outdoors regardless of day and night.

  Preferably, in addition to the configuration of the indoor / outdoor determination unit of the invention, the OLE_LINK3 indoor / outdoor determination unit detects a power generation amount from the solar panel and the solar panel, acquires power generation amount detection data, and stores the power generation amount detection data. An amount detection data storage unit, and a power generation amount threshold value data storage unit that stores power generation amount threshold value data relating to a threshold value of power generation amount for determining whether the reception unit is indoors or outdoors, and OLE_LINK3 The electronic device is configured to determine an environment of the electronic device based on the power generation amount detection data in the power generation amount detection data storage unit and the power generation amount threshold value data in the power generation amount threshold value data storage unit. Achieved by equipment.

  In the above configuration, in addition to the acceleration sensor, the indoor / outdoor determination unit further includes a solar panel, a power generation amount detection data storage unit that detects the power generation amount from the solar panel and acquires and stores the power generation amount detection data, A power generation amount threshold value data storage unit that stores power generation amount threshold value data relating to a power generation amount threshold value for determining whether the receiving unit is indoors or outdoors, and the indoor / outdoor determination unit stores the power generation amount detection data stored in the indoor / outdoor determination unit The environment of the electronic device is determined based on the power generation amount data of the unit and the power generation threshold value data of the power generation threshold value data storage unit.

In addition to the acceleration sensor, this indoor / outdoor determination unit further detects the power generation amount of the solar panel provided in the electronic device, and stores the detected power generation amount and the threshold value of the power generation amount for determining whether the electronic device is indoors or outdoors. It compares with the power generation amount threshold value of the power generation amount threshold value data storage section to determine whether or not the detected power generation amount is equal to or greater than the threshold value, and determines whether the electronic device is indoors or outdoors. Based on this determination, the receiving unit determines whether to perform a receiving operation in order to acquire the position information satellite. If the detected power generation amount is smaller than the power generation amount threshold value, it is determined that the electronic device is indoors, and based on this determination, the receiving unit does not perform a reception operation. Conversely, if the detected power generation amount is equal to or greater than the power generation amount threshold, it is determined that the electronic device is outdoors, and the receiving unit performs a reception operation based on this determination.
For this reason, since the indoor / outdoor determination unit includes both an acceleration sensor and a solar panel, it is possible to cope with any environment.

  Preferably, the indoor / outdoor determination unit includes a date data storage unit that stores date data of a date display unit provided in the electronic device, and a time data storage unit that stores time data of a time display unit provided in the electronic device. A use region data storage unit for inputting use region information where the receiving unit is located; a sunshine data table storage unit that stores each data table of a region data table, a date data table, and a sunshine time data table in advance; Sunshine time data extracted from the sunshine time data table and stored based on the date data, the use area information, and the area data table and the date data table of the sunshine data table storage unit. The extracted data storage unit compares the sunshine time data with the time data of the time data storage unit. It has a configuration having a power generation amount / acceleration selecting unit is achieved by an electronic apparatus according to claim.

  In the configuration, the indoor / outdoor determination unit includes a date data storage unit that stores date data of a date display unit provided in the electronic device, a time data storage unit that stores time data of a time display unit provided in the electronic device, and a reception A use region data storage unit for inputting the use region information where the department is located, and a sunshine data table storage unit that stores each data table of the region data table, the date data table, and the sunshine time data table in advance, A sunshine time extraction data storage unit that extracts and stores sunshine time data from the sunshine time data table based on the date data, the use region information, and the region data table and the date data table of the sunshine data table storage unit. Power generation amount / acceleration for comparing the sunshine time data and the time data of the time data storage unit With the selecting section.

This indoor / outdoor determination unit includes both a solar panel and an acceleration sensor. The switching of both means is performed by comparing the date data of the date display unit provided in the electronic device and the use region information where the receiving unit is located, with the region data table stored in advance in the electronic device and the date data table. Then, extract the sunshine time data of the regional data table corresponding to the date data and the usage area information and the sunshine time table corresponding to the date data table, compare the sunshine time data with the time display of the electronic device, and If it is during the time, it will be judged by the solar panel, and if it is outside the sunshine hours, it will be judged by the acceleration sensor, and the judgment means will be selected effectively. Like that.
For this reason, it becomes possible to select switching of the indoor / outdoor determination unit in accordance with the environment of the electronic device.

In addition, preferably, the use area information is achieved by a self-position of a receiving unit that captures based on the satellite signal received from the position information satellite.
In the said structure, use area information is a self-position of the receiving part captured based on the satellite signal received from the positional information satellite.
For this reason, since the use area information is acquired by capturing the satellite signal received from the position information satellite, the area information can be known even if the user does not input it again. Then, the sunshine duration data can be extracted from the area information and the electronic device date information, and the indoor / outdoor determination unit can be switched based on the sunshine duration data. Therefore, it is necessary to input and set the usage region information again. Absent.

Preferably, the indoor / outdoor determination unit includes an indoor / outdoor determination data storage unit that stores a time zone for capturing the position information satellite of the reception unit, and the reception unit stores the indoor / outdoor determination data storage. This is achieved by a configuration that captures the position information satellite based on the time zone of the unit.
In the above-described configuration, the indoor / outdoor determination unit has an indoor / outdoor determination data storage unit that stores a time zone in which the position information satellite of the reception unit is captured, and accumulates and uses indoor / outdoor determination data for a certain period. According to the person's behavior pattern, the indoor / outdoor determination means can be switched.

  Preferably, the indoor / outdoor determination unit includes a temperature sensor, a power generation amount detection data storage unit that detects a power generation amount from the temperature sensor to acquire and store power generation amount detection data, and an indoor / outdoor of the reception unit. A power generation amount threshold value data storage unit that stores power generation amount threshold value data relating to a power generation amount threshold value for determining the power generation amount threshold value, and the indoor / outdoor determination unit includes the power generation amount detection data storage unit of the indoor / outdoor determination unit. This is achieved by an electronic device that is configured to determine an environment of the electronic device based on the power generation amount detection data and the power generation amount threshold value data of the power generation amount threshold value data storage unit.

  In the above-described configuration, the indoor / outdoor determination unit detects the power generation amount from the temperature sensor, acquires the power generation amount detection data, and stores the power generation amount detection data storage unit. A power generation amount threshold value data storage unit that stores power generation amount threshold value data relating to the amount threshold, and the power generation amount data of the power generation amount detection data storage unit of the indoor / outdoor determination unit and the power generation amount threshold value data storage unit The environment of the electronic device is determined based on the power generation amount threshold data.

This indoor / outdoor determination unit generates power when the temperature sensor provided in the electronic device generates a temperature difference. Therefore, the indoor / outdoor determination unit detects this power generation amount, and determines the detected power generation amount and the threshold value of the power generation amount for determining whether the electronic device is indoors or outdoors. The power generation amount threshold value stored in the data storage unit is compared with the power generation amount threshold value to determine whether or not the threshold value is greater than or equal to the threshold value. Based on this determination, the receiving unit determines whether or not to perform a receiving operation to acquire the position information satellite. Therefore, when the power generation amount is smaller than the threshold value, the indoor / outdoor determination unit determines that the electronic device is indoor, and the reception unit does not perform a reception operation based on this determination. Conversely, when the power generation amount is equal to or greater than the threshold, the indoor / outdoor determination unit determines that the electronic device is outdoors, and the reception unit performs a reception operation based on this determination.
For this reason, it is possible to prevent wasteful power consumption by performing a reception operation even in an environment where the reception unit cannot receive. In addition, electric energy generated by the temperature difference of the temperature sensor can be stored in the battery, and the power lost by the receiving operation can be compensated.

  According to the present invention, the subject is a step of receiving a satellite signal from a position information satellite orbiting the earth, a step of capturing the position information satellite, and a time correction section of a satellite received by the reception section. A time correction method for a timepiece device, comprising: a time correction information generation step for generating time correction information based on a signal; and a display time information correction step for the display information correction unit to correct display time information based on the time correction information. In the step of capturing the position information satellite, the reception unit includes an indoor / outdoor determination unit that determines an environment of the timepiece device, and the indoor / outdoor determination unit detects a power generation amount from the solar panel. The power generation amount threshold value data of the power generation amount threshold value data storage unit that stores the power generation amount threshold value data relating to the threshold value of the power generation amount that discriminates the indoor and outdoor of the receiving unit is compared with the power generation amount data. And a power generation amount detecting step, wherein the receiving unit is based on the time adjustment method of an electronic device that is an electronic device that captures the position information satellite based on the indoor / outdoor determination unit. Achieved.

  According to the present invention, the subject is a step of receiving a satellite signal from a position information satellite orbiting the earth, a step of capturing the position information satellite, and a time correction section of a satellite received by the reception section. A time correction method for a timepiece device, comprising: a time correction information generation step for generating time correction information based on a signal; and a display time information correction step for the display information correction unit to correct display time information based on the time correction information. In the step of capturing the position information satellite, the reception unit includes an indoor / outdoor determination unit that determines an environment of the timepiece device, and the indoor / outdoor determination unit detects output waveform data from the acceleration sensor. A step of generating and storing amplitude data from the output waveform data, and an acceleration sensor output waveform amplitude threshold related to a threshold of the amplitude data for determining whether the receiving unit is indoors or outdoors And an acceleration sensor output waveform detection step having a step of comparing the data and the amplitude data, and the receiving unit captures the position information satellite based on the indoor / outdoor determination unit This is achieved by the time adjustment method of the electronic device.

  According to the present invention, the subject is a step of receiving a satellite signal from a position information satellite orbiting the earth, a step of capturing the position information satellite, and a time correction section of a satellite received by the reception section. A time correction method for a timepiece device, comprising: a time correction information generation step for generating time correction information based on a signal; and a display time information correction step for the display information correction unit to correct display time information based on the time correction information. In the step of capturing the position information satellite, the reception unit includes an indoor / outdoor determination unit that determines an environment of the timepiece device, and the indoor / outdoor determination unit detects a power generation amount from the solar panel. The power generation amount threshold value data of the power generation amount threshold value data storage unit that stores the power generation amount threshold value data relating to the threshold value of the power generation amount that discriminates the indoor and outdoor of the receiving unit is compared with the power generation amount data. And a step of detecting and storing output waveform data from the acceleration sensor, a step of generating and storing amplitude data from the output waveform data, and an indoor / outdoor of the receiving unit. An acceleration sensor output waveform detection step comprising: comparing the amplitude data with acceleration sensor output waveform amplitude threshold data relating to the amplitude data to be determined; and the receiving unit is the indoor / outdoor determination unit And the time correction method of the electronic device that is the electronic device that captures the position information satellite.

According to this configuration, the receiving unit includes the indoor / outdoor determination unit, and the indoor / outdoor determination unit is based on the result of performing the indoor / outdoor determination by either the solar panel or the acceleration sensor, or by both the solar panel and the acceleration sensor. Thus, the position information satellite is received, and therefore it is possible to prevent wasteful power consumption by performing a reception operation even in an environment where the reception unit cannot receive.
And according to both, since it can also mutually complement, it becomes a more preferable structure.
Further, when the receiving unit performs a receiving operation, the battery can be charged by power generation from the solar panel.

Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings.
The embodiments described below are preferred specific examples of the present invention, and thus various technically preferable limitations are given. However, the scope of the present invention is particularly limited in the following description. Unless otherwise stated, the present invention is not limited to these embodiments.

FIG. 1 is a schematic view showing a wristwatch 10 with a GPS time correction device (hereinafter referred to as “GPS wristwatch”) as an example of an electronic apparatus according to the present invention, and FIG. 2 is a cross-sectional view of the GPS wristwatch 10 of FIG. FIG.
As shown in FIGS. 1 and 2, the GPS wristwatch 10 includes a time display unit 16 on which a dial 12, a second hand 13b, a minute hand 13a, and an hour hand 13c are arranged, and an LCD display panel on which various messages are displayed. A display 14 including 30 and a date display unit 22 for displaying the date are formed. And the operation part 17 which a user operates according to the instruction | indication of the message of the display 14 is formed.

  2 shows the schematic structure of the interior of the GPS wristwatch 10. The solar panel 27 is provided on the surface opposite to the time display surface of the dial 12 (hereinafter referred to as the back surface). It is arranged and forms a part of a solar panel charging device 24 which is a solar cell described later. This solar panel 27 absorbs light from sunlight and generates electric power so that a battery (not shown) can be charged. Here, it is preferable that the dial 12 has translucency so that light from sunlight reaches the solar panel 27. A glass 33 is disposed on the surface side of the dial 12. An acceleration sensor 25 is disposed in the space between the back cover 31 below the dial 12 and forms a part of an acceleration sensor output waveform generation device 29 described later. The acceleration sensor 25 detects the movement of the user of the GPS wristwatch 10.

As shown in FIGS. 1 and 2, the GPS wristwatch 10 has an antenna 11, which is a GPS satellite 15a, 15b, 15c orbiting the earth over a predetermined orbit. , 15d is received.
The GPS satellite 15a and the like are an example of a position information satellite.

FIG. 3 is a schematic diagram showing the main hardware configuration and the like inside the GPS wristwatch 10. As shown in FIG. 3, the GPS wristwatch 10 includes a clock device 28, a GPS device 23, a battery 26, a solar panel charging device 24, and the like, and has a configuration that also functions as a computer.
That is, the GPS wristwatch 10 in the present embodiment is a so-called electronic timepiece.

Hereinafter, each configuration shown in FIG. 3 will be described.
As shown in FIG. 3, the GPS wristwatch 10 includes a bus 18 to which a CPU (Central Processing Unit) 19, a RAM (Random Access Memory) 20, a ROM (Read Only Memory) 21, and the like are connected. ing.
The bus 18 is also connected with, for example, a GPS device 23 that is a receiving unit that receives satellite signals from the GPS satellites 15a and the like. Specifically, the GPS device 23 includes an antenna 11, a filter (SAW) (not shown), RF, baseband, and the like.
That is, the GPS device 23 is configured to receive satellite signals from the GPS satellites 15a and the like in FIG. 1 and extract them from the antenna 11 as signals in the baseband via filters and RF. Details of signals received from the GPS satellites 15a and the like will be described later.

Further, for example, a clock device 28 that is a time information generation unit that generates time information is also connected to the bus 18. Specifically, the timepiece device 28 includes a real-time clock (RTC), a crystal oscillation circuit with a temperature compensation circuit (TCXO), a date display unit 22, and the like.
In addition, a battery 26 that is a power source is connected to the bus 18, and a solar panel charging device 24 that is a solar battery for charging the battery 26 is also connected.
For this reason, the power generated by the solar panel charging device 24 is supplied to the battery 26.
Furthermore, an acceleration sensor output waveform generation device 29 is also connected to detect the output of the acceleration sensor 25 and generate a waveform.

Further, the display 14 and the like shown in FIG.
As described above, the bus 18 has a function of connecting all devices and is an internal bus having an address and a data path. The RAM 20 controls a ROM 21 and the like connected to the bus 18 in addition to processing a predetermined program. The ROM 21 stores various programs and various information.

4 to 7 are schematic diagrams showing the main software configuration of the GPS wristwatch 10, and FIG. 4 is an overall view.
As shown in FIG. 4, the GPS wristwatch 10 includes a control unit 35. The control unit 35 includes a GPS device 23, a clock device 28, a battery 26, a solar panel charging device 24, and an acceleration sensor output waveform generation device 29. The time correction program 36, various data in the first storage unit 40, various data in the second storage unit 50, and various programs in the indoor / outdoor determination program storage unit 60 are processed.
FIG. 4 shows the time correction program 36, the first storage unit 40, the second storage unit 50, and the indoor / outdoor determination program storage unit 60 separately, but actually the data is stored separately in this way. They are not shown here, but are shown separately for convenience of explanation.
The first storage unit 40 in FIG. 4 mainly shows data stored in advance. The second storage unit 50 mainly shows data after processing the data in the first storage unit 40 with various programs in the indoor / outdoor determination program storage unit 60, data obtained in the course of the program processing, and the like. ing.
FIG. 5 is a schematic diagram showing data in the first storage unit 40 of FIG. 4, and FIG. 6 is a schematic diagram showing data in the second storage unit 50 of FIG. FIG. 7 is a schematic diagram showing a program in the indoor / outdoor determination program storage unit 60 of FIG.
8 to 11 are schematic flowcharts showing main operations and the like of the GPS wristwatch 10 according to the present embodiment.

Hereinafter, the operations of the GPS wristwatch 10 according to the present embodiment will be described according to the flowcharts of FIGS. 8 to 11, and the various programs and various data of FIGS.
First, the GPS wristwatch 10 in FIG. 1 is configured to correct the time of the clock device 28 at a certain time. This time correction is performed by receiving a signal from the GPS satellite 15a or the like, as will be described later.
Accordingly, in order to determine whether or not the GPS wristwatch 10 is in a state capable of receiving signals from the GPS satellite 15a or the like, that is, indoors or outdoors, as a step before receiving a signal from the GPS satellite 15a or the like, FIG. As shown in ST1, any or more of various programs stored in the indoor / outdoor determination program storage unit 60 are selected and executed. In the following, when any one or more of the various programs in the indoor / outdoor determination program storage unit 60 are pointed out, they are described as the indoor / outdoor determination program 601, and when describing each of the programs, the indoor / outdoor determination program 601 is selected The program to be executed is shown and described.
Then, the process proceeds to ST2, where it is determined whether or not the indoor / outdoor determination program 601 has been normally completed. If the indoor / outdoor determination program 601 has been normally completed, it is determined that the outdoor is capable of receiving the GPS satellite 15a and the like. Advance, for example, capture four or more GPS satellites 15a and the like. Specifically, the GPS device 23 of FIG. 3 operates, receives a GPS signal from the antenna 11, and searches for a GPS satellite 15a that can be captured. Next, the process proceeds to ST6, the time correction program 36 of FIG. 4 is executed, and the process proceeds to ST7. Specifically, the time is corrected in the following steps.

Here, before explaining the process of ST7, satellite signals of the GPS satellite 15a and the like will be explained. FIG. 16 is a schematic explanatory diagram showing satellite signals of the GPS satellite 15a and the like.
As shown in FIG. 16, the signals from the GPS satellites 15a and the like include satellite correction data including information indicating the state of the GPS satellites that are transmitting the signals, and ephemeris information about the orbits of the GPS satellites. Other satellite simple data including almanac information relating to the orbit information of all GPS satellites is included, and navigation message information is composed of these data as a whole.
The navigation message information is composed of one frame consisting of 1 to 5 subframes, and the other satellite simple data is divided into 1 to 25 pages. Then, it takes 30 seconds to transmit this one frame (the subframe is 6 seconds and 5 subframes), and it is transmitted every frame.

Further, the contents of different pages are transmitted in order for each frame, and information on the entire navigation message information is transmitted. From this GPS satellite, 1023 (1023 chips) C / A code consisting of 1 or 0 is repeatedly transmitted every 1 millisecond on a carrier wave of 1574.2 Hz, superimposed on the navigation message information described above, Has been sent.
Each subframe has 10 words (one word is 0.6 seconds), and the first word of each subframe is a TLM word in which TLM (Telemetry word) data is stored. This TLM In the word, as shown in FIG. 16B, preamble data is stored at the head. A word following the TLM is a HOW word in which HOW (Hand Over word) data is stored, and GPS time information of a GPS satellite called TOW (Time of Week) is stored at the top thereof.

This C / A code displays GPS time every second from midnight on Sunday, and is reset to 0 at the beginning of the week (Sunday at 0:00 on the next week). And since the week number of GPS is attached | subjected about this one week, it has the structure by which the receiving side can acquire GPS time by acquiring the data of a week number and elapsed time (second). The starting point of this GPS time is UTC (at the time of global agreement).
And in order to acquire the navigation message information from such GPS satellite 15a etc., the receiving side needs to synchronize with the signal of GPS satellite 15 grade | etc.,. In this case, a C / A code (1023 chip (1 ms)) is used for synchronization in units of 1 ms.

  Since the signal from the GPS satellite 15a and the like is transmitted as described above, in this embodiment, as shown in ST7 of FIG. 8, it is synchronized with the C / A code from the GPS satellite 15a and the like as shown in FIG. Synchronize with the TLM word preamble and HOW word TOW shown in b). Then, the GPS wristwatch 10 acquires navigation data such as the four GPS satellites 15a.

Next, the process proceeds to ST8, and the propagation delay time of signals from these four GPS satellites 15a and the like (time to reach the GPS wristwatch 10 from the GPS satellites) is measured using the clock device 28, and the speed of light (c ) Based on the data, the pseudo satellite distance between the GPS satellite 15a and the like and the GPS wristwatch 10 is calculated. Then, based on the pseudo-satellite distance from the four GPS satellites 15a and the like, the position, altitude, and true propagation delay time of the GPS wristwatch 10 are calculated by four simultaneous equations, and the GPS wristwatch 10 position and position information and true The propagation delay time is calculated.
As a result, the true propagation delay time and the propagation delay time actually measured by the clock device 28 can be acquired.

Thus, the positional information and the true propagation delay of the GPS wristwatch 10 obtained by calculation with reference to the propagation delay time actually measured for the time until the signals transmitted from the four GPS satellites 15a are received. Time and a propagation delay time that is a measurement value measured by the clock device 28 are generated.
Next, in ST9, the clock device 28 is offset (corrected) based on difference data between the true propagation delay time obtained by calculation and the propagation delay time actually measured by the clock device 28.

Subsequently, as shown in ST10, the time display of the time display unit 16 on the dial 12 of FIG. 1 is corrected based on the data of the timepiece device 28 corrected by the UTC reference acquired from the GPS satellite 15a or the like, The time display of the time display unit 16 is a time information correction display unit.
Therefore, for example, Japan time considering the time difference is displayed.
This completes the time correction using the four satellites. Since the clock device 28 of the GPS wristwatch 10 can be corrected according to the time information of the GPS satellite 15a having the atomic clock, the time of the GPS wristwatch 10 can be corrected with high accuracy.
If it is determined in ST2 that the process has not ended normally, the process proceeds to ST3, the indoor / outdoor determination program 601 is forcibly terminated, and a message indicating that the GPS satellite cannot be captured is displayed on the display 14. To inform users. The user recognizes the display, and in ST4, a display indicating that the time should be adjusted manually is made by user judgment, and the process ends.

This completes the time correction in FIG.
Here, in the present embodiment, the case where a plurality of satellites of four or more satellites is mainly described as the time correction. However, the present invention is not limited to this, and the time correction by one satellite may be performed.
In that case, the self position, that is, the position of the GPS wristwatch 10 is assumed to be known. One satellite is captured, C / A code is synchronized, preamble and TOW are synchronized, and ephemeris information is acquired. Then, the position information on the orbit of the captured GPS satellite 15a or the like is acquired from the ephemeris information, and the true propagation delay time (pseudo satellite distance) of the signal from the GPS satellite 15a or the like is obtained together with the already known position. Obtain by calculation.

  Next, the propagation delay time of the signal actually received from the GPS satellite 15a is acquired using a clock device. Thus, the actual propagation delay time and the true propagation delay time can be acquired. The subsequent steps are the same as ST8 and ST9 in FIG. 8 in the case of the four satellites described above. Then, the one satellite time correction mode ends.

In the one-satellite time correction mode, it is only necessary to capture one GPS satellite 15a and receive data, so that power consumption can be significantly reduced compared to the case of capturing four GPS satellites 15a and the like. In this way, the time correction of four satellites and the time correction of one satellite may be used in combination, and the power consumption can be reduced while maintaining the time correction with high accuracy.
The individual indoor / outdoor determination program 601 will be described below.

  In ST1 of FIG. 8, the indoor / outdoor determination program 601 is executed. The indoor / outdoor determination program 601 includes the power generation amount detection program 61 of FIG. 7 related to the solar panel charging device 24 of FIGS. 9 showing the operation, and the acceleration sensor output waveform detection program 63 of FIG. 7 and the schematic flowchart of FIG. 10 showing the operation related to the acceleration sensor output device waveform generation device 29 of FIGS. 3 and 4. In addition, in accordance with the power generation amount detection program 61 and the acceleration sensor output waveform detection program 63, the sunshine table extraction program 62, the power generation amount / acceleration selection program 64 in FIG. There are cases where it relates to a flowchart.

  Regarding the point of judging the situation of the GPS wristwatch 10 indoors and outdoors, for example, from the GPS satellite 15a orbiting around the earth in order to correct the time even though the GPS wristwatch 10 is indoors. A reception operation is started to receive a signal. Since this reception operation is usually set to try several times, the reception operation is not immediately terminated even if the reception unit fails in reception. Therefore, power is continuously consumed during that time. In such a case, since the battery 26 mounted on a small device such as the GPS wristwatch 10 is not usually large in capacity, there arises a problem that the time for running out of the battery is shortened.

Therefore, when it is determined by the indoor / outdoor determination program 601 that the GPS wristwatch 10 is in an indoor environment, the reception unit does not perform the reception operation, and the reception operation is started only when it is determined that it is outdoors. As a result, the power consumption is reduced and the time for running out of the battery becomes longer, so that the GPS device can be mounted on a small device having a limited battery capacity.
The individual indoor / outdoor determination program 601 will be described below.

(Power generation detection program 61)
A case where the power generation amount detection program 61 of FIG. 7 is selected as the indoor / outdoor determination program 601 will be described.
The power generation amount detection program 61 relates to the solar panel charging device 24 of FIGS. 3 and 4 and its operation is shown in the schematic flowchart of FIG.
When the indoor / outdoor determination program 601 in ST1 in FIG. 8 is executed, the power generation amount detection program 61 in FIG. 7 is selected, and the power generation amount detection program is executed in ST100 in FIG. 9, so that the GPS wristwatch 10 is outdoors. It is intended to determine whether it is indoors from the amount of power generated by the solar cell.
That is, if the GPS wristwatch 10 is placed outdoors, the amount of power generation increases, and conversely, if it is placed indoors, the amount of power generation decreases. To do.

FIG. 12 is a graph showing the relationship between the relative power generation amount and the illuminance in the solar panel charging device 24 of FIG. 3 which is a solar cell. The illuminance of this graph is low indoors (indoors) and high outdoors.
Then, the relative power generation amount changes in correspondence with the illuminance. In FIG. 12, when the relative power generation amount is less than 0.5 (5,000 lx), the probability of being indoor is high, and when it is 0.5 or more, the probability of being outdoor is high.
Therefore, in the present embodiment, for example, 0.5 (lx) is set in advance as the power generation threshold data 43a stored in the power generation threshold data storage 43 shown in FIG. When the power generation amount detected in the above is 0.5 (lx) or more, it is assumed that the environment of the GPS wristwatch 10 is outdoors, and when it is less than 0.5 (lx), the environment of the GPS wristwatch 10 is indoors. Judge that there is.

That is, in ST100, the power generation amount detection program is executed, and then the process proceeds to ST101 where the power generation amount from the solar panel charging device 24 is detected and stored in the power generation amount detection data storage unit 52 of FIG. Next, in ST102, the power generation amount detection data 52a in the power generation amount detection data storage unit 52 in FIG. 6 is compared with the power generation amount threshold value data 43a in the power generation amount threshold value data storage unit 43 in FIG. Specifically, it is determined whether or not the relative power generation amount as the power generation amount detection data 52a in FIG. 6 is 0.5 (lx) or more shown in FIG. Then, the process proceeds to ST103, and if the power generation amount detection data 52a is equal to or greater than the power generation amount threshold data 43a0.5 (lx), the process proceeds to ST105, where a GPS satellite can be captured, that is, the GPS wristwatch 10 is outdoors. Thus, the power generation amount detection program is terminated, and the process returns to the above-described ST2 in FIG. 8 and is normally terminated. Then, the process proceeds to ST5, a GPS satellite scan is started, and four or more GPS satellites are captured. Then, the self position is determined by the operations of ST6 to ST10 described above, and the time is corrected.
However, if the power generation amount detection data 52a is less than the power generation amount threshold value data 43a (0.5 (lx)) in ST103, the process proceeds to ST104, and several times, for example, N = 5 times, the operation from ST101 to ST103. When the power generation amount detection data 52a is less than the power generation amount threshold data 43a (0.5 (lx)) five times or more, this program is forcibly terminated, and the process returns to ST2 in FIG. If it is not completed normally, the process proceeds to ST3 to display to the user that the GPS satellite cannot be captured, and as described above, in ST4, to indicate that the time should be corrected manually by user judgment, finish.
Therefore, in this embodiment, the GPS wristwatch 10 is configured to accurately determine whether the GPS wristwatch 10 is located indoors or outdoors.

In this way, the power generation amount detection program 61 acquires the power generation amount detection data 52a that is information on the environment of the reception unit (GPS device 23), and the reception unit (GPS device 23) based on the power generation amount detection data 52a. This is an example of an indoor / outdoor determination unit that determines the reception environment (indoor / outdoor).
Then, if reception is possible, the reception unit performs reception operation, measures its position, and corrects the time, but if reception is not possible, the reception unit does not perform reception operation. Power can be reduced.
In addition, when the power generation amount detection data 52a obtained when the power generation amount detection program 61 is executed here is equal to or greater than the threshold value of the power generation amount threshold data 43a, and below the threshold value of the power generation amount threshold data 43a. If a certain time zone is stored in the indoor / outdoor judgment data storage unit 58 in FIG. 6, it is possible to determine the time zone for capturing the position information satellite based on the time zone in the indoor / outdoor judgment data storage unit 58. is there. Therefore, since it is not always necessary to detect the power generation amount of the solar panel charging device 24, it is convenient for the user.

(Acceleration sensor output waveform detection program 63)
The case where the acceleration sensor output waveform detection program 63 of FIG. 7 is selected as the indoor / outdoor determination program 601 of FIG. 7 will be described. The acceleration sensor output waveform detection program 63 relates to the acceleration sensor output waveform generation device 29 of FIGS. 3 and 4, and its operation is shown in the schematic flowchart of FIG.
When the indoor / outdoor determination program 601 is executed in ST1 of FIG. 8, the acceleration sensor output waveform detection program 63 of FIG. 7 is selected, the power generation amount detection program of ST200 of FIG. 10 is executed, and the GPS wristwatch 10 Whether the vehicle is indoors or indoors is determined by the amplitude of the output waveform of the acceleration sensor 25.
That is, when the GPS wristwatch 10 is disposed outdoors, the amplitude of the output waveform of the acceleration sensor 25 is increased to some extent, and conversely, if the GPS wristwatch 10 is disposed indoors, the amplitude of the output waveform is decreased. This is an indoor / outdoor determination based on the amplitude of the waveform. Alternatively, frequency analysis is performed based on the output waveform obtained by the acceleration sensor output waveform generation device 29 together with the amplitude, and the indoor / outdoor determination can be performed based on whether or not the period of the waveform can be obtained. it can. In this case, if the GPS wristwatch 10 is disposed outdoors, the waveform is periodically obtained as a result of frequency analysis. Conversely, if the GPS wristwatch 10 is disposed indoors, the periodic waveform cannot be obtained and is random. It becomes.

  FIGS. 13 to 15 are graphs showing (a) an acceleration sensor output waveform and (b) frequency analysis data in an acceleration sensor output waveform generation device 29 including the acceleration sensor 25. 13 and 14 show the case of outdoor, FIG. 13 shows the case of walking outdoors, and FIG. 14 shows the case of running outdoors. FIG. 15 shows the case of indoor activity. Comparing the amplitude of the acceleration sensor output waveform of FIG. 13 and FIG. 14 with the amplitude of the acceleration sensor output waveform of FIG. 15, FIG. 13 and FIG. 14 are larger. Even when the outdoor walking in FIG. 13 and the indoor activity in FIG. 15 are compared, the amplitude in FIG. 13 is about three times as large. Further, when comparing the frequency analysis data, there is a periodic waveform in the case of the outdoor in FIGS. 13 and 14, but no waveform appears periodically in the case of the indoor in FIG. 15. Therefore, with respect to the amplitude of the output waveform of the acceleration sensor, the case where the amplitude of the output waveform obtained from the acceleration sensor output waveform generation device 29 is small with the outdoor walking in FIG. That is, in the present embodiment, with reference to the time of outdoor walking in FIG. 13, the acceleration sensor output waveform amplitude threshold value data 441 of the acceleration threshold data storage unit 44 is set as, for example, the amplitude at the time of outdoor walking in FIG. When the amplitude of the output waveform obtained from the acceleration sensor output waveform generation device 29 is 1 or more, the environment of the GPS wristwatch 10 is assumed to be outdoors. When the amplitude is less than 1, the environment of the GPS wristwatch 10 is Judge as indoor.

That is, when the acceleration sensor output waveform detection program 63 is executed in ST200, the acceleration sensor output waveform and / or frequency analysis data from the acceleration sensor output waveform generation device 29 including the acceleration sensor 25 is acquired in ST201. The data is stored in the acceleration sensor detection data storage unit 54 of FIG. Next, in ST202, amplitude data 57a and / or frequency period data 57b are acquired from the acceleration sensor output waveform 54a and / or frequency analysis data 54b accommodated in the acceleration sensor detection data storage unit 54, and FIG. The generated waveform amplitude data storage unit 57 stores the generated waveform amplitude data.
In ST203, the amplitude data 57a stored in the generated waveform amplitude data storage unit 57 and the outdoor walking of FIG. 13 which is the acceleration sensor output waveform amplitude threshold data 441 of the acceleration threshold data storage unit 44 of FIG. Compared to the reference amplitude data (for example, 1), in ST204, it is determined whether or not acceleration sensor output waveform amplitude threshold data 441 or more and / or frequency frequency data is obtained. If the acceleration sensor output waveform amplitude threshold data 441 is greater than or equal to 441 and / or the frequency period data 57b is obtained, the process proceeds to ST209 and the output time of the acceleration sensor output waveform generation device 29 including the acceleration sensor 25 is set. measure. Then, the process proceeds to ST211 and it is determined whether or not the output time continues for a predetermined time or more, for example, 1 minute or more. If the output time continues for 1 minute or more, the process proceeds to ST212 and the GPS satellite can be captured. If so, the program ends. That is, it is determined that the GPS wristwatch 10 is outdoors, the acceleration sensor output waveform detection program 63 is terminated, the process returns to ST2 in FIG. 8 described above, and the process ends normally. Then, 4 GPS satellites or more are captured. Then, the self position is determined by the operations of ST6 to ST10 described above, and the time is corrected.

  In ST211, it is determined whether N minutes or more, for example, N = 5 times. If it is outdoors and there is no output from the acceleration sensor for less than 1 minute, for example, the user may stop moving because of waiting for a signal. Have been to. If N = 5 times or more and the output time is less than 1 minute, the process proceeds to ST207, where the time measurement timer is stopped, and in ST208, the time measurement timer is reset and forcibly terminated. Then, returning to ST2 in FIG. 8, assuming that the operation has not been completed normally, the process proceeds to ST3 to display to the user that the GPS satellite cannot be captured. Display that it should be corrected, and exit.

Next, the process returns to ST204. Here, when the acceleration sensor output waveform amplitude threshold data 441 is less than 441 and / or the frequency period data 57b is not obtained, the time measurement timer is started in ST205. The time during which the acceleration sensor output waveform amplitude threshold data 441 is less and / or the frequency period data 57b cannot be obtained is measured. In ST206, it is measured whether or not a predetermined time, for example, about one week, is less than the acceleration sensor output waveform amplitude threshold data 441 and / or a time during which the frequency period data 57b is not obtained continues. If the acceleration sensor output waveform amplitude threshold data 441 is less than 441 and / or the period in which the frequency period data 57b cannot be obtained continues for one week or longer, the process proceeds to ST207, the time measurement timer is stopped, and the time is measured in ST208. Reset the measurement timer and kill it. Then, as described above, the process returns to ST2 in FIG. 8, and it is determined that the process has not been completed normally. The process proceeds to ST3 to display to the user that the GPS satellite cannot be captured. To indicate that the time should be adjusted manually, and the process is terminated.
Therefore, in this embodiment, the GPS wristwatch 10 is configured to accurately determine whether the GPS wristwatch 10 is located indoors or outdoors.

In this way, the acceleration sensor output waveform detection program 63 acquires the amplitude data 57a and / or frequency period data 57b, which is information on the environment of the receiver (GPS device 23), and obtains the amplitude data 57a and / or frequency information. This is an example of an indoor / outdoor determination unit that determines the reception environment (indoor / outdoor) of the reception unit (GPS device 23) based on the periodic data 57b.
When the acceleration sensor output waveform detection program 63 is executed here, the amplitude data 57a is greater than or equal to the acceleration sensor output waveform amplitude threshold data 441 and / or the time period in which the frequency period data 57b is obtained. When the acceleration sensor output waveform amplitude threshold value data 441 or less and / or the time period when the frequency period data 57b is not obtained are stored in the indoor / outdoor determination data storage unit 58 in FIG. Based on the inside / outside judgment data storage unit 58, it is possible to determine a time zone for capturing the position information satellite. Therefore, it is not necessary to always detect with the acceleration sensor, which is convenient for the user.

  As described above, according to the present embodiment, the GPS wristwatch 10 determines whether the reception environment is indoor or outdoor, and selects an appropriate GPS satellite 15a or the like from the almanac information based on the determination result. Since it captures and receives a signal, measures its own position, and corrects the time, the time can be adjusted with low power consumption and high accuracy. In particular, this embodiment has the most effective configuration for an electronic device that requires ultra-low power and highly accurate time adjustment, such as a watch.

(Sunshine table extraction program 62 and power generation / acceleration selection program 64)
A case where the sunshine table extraction program 62 and the power generation / acceleration selection program 64 of FIG. 6 are further selected as the indoor / outdoor determination program 601 of FIG. 7 will be described.
The sunshine table extraction program 62 and the power generation amount / acceleration selection program 64 select which of the above-described programs of the power generation amount detection program 61 and the acceleration sensor output waveform detection program 63 should be executed in relation to the sunshine duration. The power generation amount detection program 61 and the acceleration sensor output waveform detection program 63 complement each other. The operation is shown in the schematic flowchart of FIG.
Here, the operation of each of the power generation amount detection program 61 and the acceleration sensor output waveform detection program 63 is as described above, and therefore, redundant description will be omitted here, and different points will be described in detail.

  When the indoor / outdoor determination program 601 is executed in ST1 of FIG. 8, the process proceeds to ST300 of FIG. In ST300, it is determined whether or not sunshine data has been set in advance by the user. If the sunshine time data is set in advance, the process proceeds to ST304, and the sunshine time data is stored in the sunshine time data storage unit 53 of FIG. Next, the process proceeds to ST305. Since this will be described later, here, a case where sunshine data is not set in advance will be described. In this case, the process proceeds to ST301, and the sunshine table extraction program 62 in FIG. 7 is executed. Next, the process proceeds to ST302, where the date data is acquired from the date display unit 22 of FIG. 4 provided in the clock device 28 of FIG. Then, the process proceeds to ST303, where the use area data 56a stored in the use area data storage unit 56 of FIG. 6 and the date data 51a of the date data storage unit 51 are used, and the sunshine data table storage unit 41 of FIG. Are compared with each data in the area data table 411 and the date data table 413, and the corresponding part is selected. In the sunshine data table 41, the data tables of the area data table 411, the date data table 413, and the sunshine time data table 412 are stored in association with each other on the matrix, and two data of each data table are determined. And the data of the remaining data table can be extracted.

Therefore, here, since the two data of the date data 51a obtained from the date display unit 22 of the clock device 28 and the use area data 56a are known, the data of the corresponding part of each data table can be determined, so that the remaining sunshine Time data can be extracted from the sunshine hours data table 412. The sunshine duration data table 412 stores each area data, date data, and corresponding day / day hours.
Here, the use area data 56a stored in the use area data storage unit 56 can be set in advance by the user, and the self-position when the signal from the GPS satellite was received before is measured. It is also possible to memorize the area of use based on the results.

Next, the process proceeds to ST304, and the extracted sunshine time data is stored in the sunshine time data storage unit 53 of FIG. Then, the process proceeds to ST305, and the power generation / acceleration selection program 64 of FIG. 7 is executed. Here, the power generation amount / acceleration selection program 64 is a program for selecting which of the power generation amount detection program 61 and the acceleration sensor output waveform detection program 63 should be executed according to certain conditions. It is to be judged.
In other words, in the determination of indoor / outdoor, the power generation amount detection program 61 is caused by the power generation amount of the solar panel type charging device 24 that is a solar battery. It may not be preferable, and it is necessary to select these indoor / outdoor determination programs 601 as appropriate.

  Therefore, the power generation / acceleration selection program 64 is executed in ST305, and is acquired from the sunshine time data 53a stored in the sunshine time data storage unit 53 and the time display unit 16 of the timepiece device 28 of the GPS wristwatch 10 in ST306. If the environment of the GPS wristwatch 10 is within daylight hours (daytime) by comparing with the time data 59a thus obtained, the process proceeds to ST307 and proceeds to the execution of the power generation amount detection program 61, and outside the daylight hours (nighttime). If yes, the process proceeds to ST308 and proceeds to execution of the acceleration sensor output waveform detection program 63. The execution of the power generation amount detection program 61 and the execution of the acceleration sensor output waveform detection program 63 are as described above, and will be omitted. Here, the time data 59a is always obtained by storing the data acquired from the time display unit 16 by rewriting it in the time data storage unit 59 of FIG. 6, and the time correction was performed later. In the case, the correction is reflected.

If the power generation amount detection program 61 or the acceleration sensor output waveform detection program 63 ends normally, the process proceeds to ST5 in FIG. 8, and if it does not end normally, it forcibly ends in ST3 and the GPS satellites A display to the effect that it is impossible to capture is displayed on the display 14 to inform the user, and a user decision is made in ST4.
As described above, since the execution of the power generation amount detection program 61 and the execution of the acceleration sensor output waveform detection program 63 can be selected appropriately and smoothly, the reception unit (GPS device 23) is in an environment where reception is not possible. The reception operation can be started so that the power consumption is not increased.

  Further, based on the sunshine duration data, which is the determination criterion of the power generation amount / acceleration selection program 64 described above, and the indoor / outdoor determination criterion of the power generation amount detection program 61 or the acceleration sensor output waveform detection program 63, the receiving unit ( The time zone when the GPS device 23) is activated is stored in advance in the indoor / outdoor determination information storage unit 58, and the next time is based on the data in the indoor / outdoor determination information storage unit 58, whether it is within sunshine hours or indoors / outdoors. It is also possible to determine whether or not there is a reception operation of the reception unit (GPS device 23). In this way, since the indoor / outdoor decision criterion becomes known, it is possible to easily select the execution of the power generation amount detection program 61 or the acceleration sensor output waveform detection program 63, shortening the time and reducing the power consumption. Even less.

In addition, the power generation amount of the power generation amount detection program 61 and the power generation amount / acceleration selection program 64 described above relates to the solar panel charging device 24. However, the power generation amount is not limited to this, and may be, for example, a temperature sensor. good. Specifically, for example, power is generated by a temperature difference detected by a temperature sensor.
Although not shown, a temperature sensor is attached to the side touching the arm of the back cover 31 of the GPS wristwatch 10 and the side touching the outside air, for example, the upper surface side of the glass 33 or the case 32, and detects the temperature difference between them. It is good also as a structure using the electric power generation amount to generate electric power.
Specifically, this power generation is, for example, a plate-like semiconductor element using the Peltier effect that heat is transferred from one metal to the other when an electric current is passed through a junction of two types of metal. A Peltier device is used, and both ends of the two types of metal of the Peltier device are respectively installed on the side where the arm or the like touches and the side where the arm or the like touches, and the temperature is detected.
And it is the mechanism through which an electric current flows by the detected temperature difference. This power generation amount is detected, and indoor / outdoor determination is made.
When the temperature sensor is used in this way, indoor / outdoor judgment can be made regardless of whether it is day or night, and it is about 0.4 mV for one thermocouple. Electricity can be generated even with a temperature difference, for example, a temperature difference of 3 ° C. or more, and the detection accuracy can be improved.

  The present invention is not limited to the above-described embodiment.

It is the schematic which shows the wristwatch with a GPS time correction apparatus which is the electronic device which concerns on this invention, for example. FIG. 2 is a schematic cross-sectional end view of the GPS wristwatch of FIG. 1. It is the schematic which shows the main hardware constitutions etc. inside the wristwatch with GPS of FIG. It is a schematic whole figure showing main software composition etc. of a wristwatch with GPS. It is the schematic which shows the data of the 1st memory | storage part of FIG. It is the schematic which shows the data of the 2nd memory | storage part of FIG. It is the schematic which shows the various programs of the indoor / outdoor judgment program memory | storage part of FIG. It is a schematic flowchart which shows the main operation | movement etc. of the wristwatch with GPS concerning this Embodiment. It is a schematic flowchart which shows the sequence of the electric power generation amount detection program which is an indoor / outdoor judgment part of FIG. It is a schematic flowchart which shows the sequence of the acceleration detection program which is an indoor / outdoor judgment part of FIG. FIG. 9 is a schematic flowchart of a power generation amount detection program and an acceleration detection program selection program that are indoor / outdoor determination units in FIG. 8. FIG. It is a graph which shows the relationship between the relative electric power generation amount and illumination intensity in the solar panel type charging device of FIG. 3 which is a solar cell. It is a schematic explanatory drawing which shows the output waveform (a) and frequency analysis result (b) in the acceleration sensor output waveform generation apparatus of FIG. 3 including the acceleration sensor of FIG. 2, and is an example at the time of outdoor walking. It is a schematic explanatory drawing which shows the output waveform (a) and frequency analysis result (b) in the acceleration sensor output waveform generation apparatus of FIG. 3 including the acceleration sensor of FIG. 2, and is an example at the time of outdoor driving | running | working. It is a schematic explanatory drawing which shows the output waveform (a) and frequency analysis result (b) in the acceleration sensor output waveform generation apparatus of FIG. 3 including the acceleration sensor of FIG. 2, and is an example at the time of indoor walking. It is a schematic explanatory drawing which shows the satellite signal of a GPS satellite.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Wristwatch with GPS time correction device, 11 ... Antenna, 12 ... Dial, 13a ... Minute hand, 13b ... Second hand, 13c ... Hour hand, 14 ... Display, 15a, 15b, 15c ... GPS satellites, 16 ... time display unit, 17 ... operation unit, 18 ... bus, 19 ... CPU, 20 ... RAM, 21 ... ROM, 22. ..Date display part, 23 ... GPS device, 24 ... Solar panel charging device, 25 ... Accelerometer, 31 ... Back cover, 32 ... Case, 33 ... Glass, 34 ... Packing, 35 ... Control part, 36 ... Time correction program, 37 ... Display window, 40 ... First storage part, 41 ... Sunlight data table housing part, 411 ... Regional data table, 412 ... sunshine time data table 413 ... Date data table, 43 ... Power generation threshold data storage unit, 43a ... Power generation threshold data, 44 ... Acceleration threshold data storage unit, 441 ... Acceleration sensor output waveform amplitude threshold Data 50... Second storage unit 51. Date data storage unit 51 a Date data 52 52 Power generation detection data storage unit 52 a Power generation detection data 53. Sunlight time data storage unit, 53a ... daylight time data, 54 ... acceleration sensor detection data storage unit, 54a ... acceleration sensor output waveform, 54b ... frequency analysis data, 55 ... daylight time extraction Data storage unit 56 ... Use region data storage unit 56a ... Use region data 57 ... Generated waveform amplitude data storage unit 57a ... Amplitude data 57b ... Period data 8 ... Indoor / outdoor determination information storage unit, 59 ... Time data storage unit, 59a ... Time data, 60 ... Indoor / outdoor determination program storage unit, 601 ... Indoor / outdoor determination program, 61.・ Power generation amount detection program, 62... Sunshine table extraction program, 63... Acceleration sensor output waveform detection program, 64... Power generation amount / acceleration selection program

Claims (11)

A receiver that captures a position information satellite that orbits the earth and receives a signal from the position information satellite;
A time information correction display unit that generates time correction information based on the satellite signal received by the reception unit and corrects and displays the display time information based on the time correction information;
The electronic device is configured to include an indoor / outdoor determination unit that determines an environment of the electronic device, and to capture the position information satellite based on the indoor / outdoor determination unit. The indoor / outdoor determination unit includes a solar panel, a power generation amount detection data storage unit that detects a power generation amount from the solar panel and acquires and stores power generation amount detection data, and a power generation amount that determines whether the reception unit is indoors or outdoors. A power generation amount threshold value data storage unit for storing power generation amount threshold value data relating to the threshold value of
The indoor / outdoor determination unit determines the environment of the electronic device based on the power generation amount detection data of the power generation amount detection data storage unit of the indoor / outdoor determination unit and the power generation amount threshold data of the power generation amount threshold data storage unit. The electronic device according to claim 1, wherein the electronic device is configured to make a determination. The indoor / outdoor determination unit includes an acceleration sensor, an acceleration sensor detection data storage unit that stores acceleration sensor output waveform data obtained by detecting an output waveform from the acceleration sensor, and amplitude data from the acceleration sensor output waveform data. A generated waveform amplitude data storage unit for generating and storing, and an acceleration threshold data storage unit for storing acceleration sensor output waveform amplitude threshold data related to the threshold value of the amplitude data for determining whether the receiving unit is indoors or outdoors. ,
The indoor / outdoor determination unit determines an environment of the electronic device based on the amplitude data from the acceleration sensor of the indoor / outdoor determination unit and the acceleration sensor output waveform amplitude threshold data of the acceleration threshold data storage unit. The electronic apparatus according to claim 1, wherein: The indoor / outdoor determination unit includes a solar panel, a power generation amount detection data storage unit that detects a power generation amount from the solar panel and acquires and stores power generation amount detection data, and a power generation amount that determines whether the reception unit is indoors or outdoors. A power generation amount threshold value data storage unit for storing power generation amount threshold value data relating to the threshold value of
The indoor / outdoor determination unit is configured to determine the environment of the electronic device based on the power generation amount detection data of the power generation amount detection data storage unit and the power generation amount threshold value data of the power generation amount threshold value data storage unit. The electronic apparatus according to claim 3, wherein The indoor / outdoor determination unit includes a date data storage unit that stores date data of a date display unit provided in the electronic device, a time data storage unit that stores time data of a time display unit provided in the electronic device, and the reception unit. A use region data storage unit for inputting the use region information where is located, and a sunshine data table storage unit that stores each data table of the region data table, the date data table, and the sunshine duration data table in advance,
A sunshine time extraction data storage unit that extracts and stores sunshine time data from the sunshine time data table based on the date data, the use region information, and the region data table and the date data table of the sunshine data table storage unit. When,
5. The electronic apparatus according to claim 4, further comprising a power generation amount / acceleration selection unit that compares the sunshine time data with the time data stored in the time data storage unit.   6. The electronic apparatus according to claim 5, wherein the use area information is a self-position of a receiving unit that is captured based on the satellite signal received from the position information satellite.   The indoor / outdoor determination unit includes an indoor / outdoor determination data storage unit that stores a time zone for capturing the position information satellite of the reception unit, and the reception unit is the time zone of the indoor / outdoor determination data storage unit. The electronic apparatus according to claim 6, wherein the position information satellite is captured based on the position information satellite. The indoor / outdoor determination unit includes a temperature sensor, a power generation amount detection data storage unit that detects a power generation amount from the temperature sensor and acquires and stores power generation amount detection data, and a power generation amount that determines whether the reception unit is indoors or outdoors. A power generation amount threshold value data storage unit for storing power generation amount threshold value data relating to the threshold value of
The indoor / outdoor determination unit determines the environment of the electronic device based on the power generation amount detection data of the power generation amount detection data storage unit of the indoor / outdoor determination unit and the power generation amount threshold data of the power generation amount threshold data storage unit. The electronic device according to claim 1, wherein the electronic device is configured to make a determination. A receiver for receiving a satellite signal from a position information satellite orbiting the earth, and capturing the position information satellite;
A time correction unit for generating time correction information based on the satellite signal received by the reception unit;
A display information correction unit, a display time information correction step of correcting display time information based on the time correction information, a time correction method of a clock device,
In the step of capturing the position information satellite, the reception unit includes an indoor / outdoor determination unit that determines an environment of the timepiece device,
The indoor / outdoor determination unit
The step of detecting and storing the power generation amount from the solar panel, the power generation amount threshold value data of the power generation amount threshold value data storage unit for storing the power generation amount threshold value data relating to the threshold value of the power generation amount for discriminating the inside and outside of the receiving unit, and the above A step of comparing the power generation amount data with a step of detecting the power generation amount,
Have
The time correction method for an electronic device, wherein the reception unit is an electronic device that captures the position information satellite based on the indoor / outdoor determination unit. A receiver for receiving a satellite signal from a position information satellite orbiting the earth, and capturing the position information satellite;
A time correction unit for generating time correction information based on the satellite signal received by the reception unit;
A display information correction unit, a display time information correction step of correcting display time information based on the time correction information, a time correction method of a clock device,
In the step of capturing the position information satellite, the reception unit includes an indoor / outdoor determination unit that determines an environment of the timepiece device,
The indoor / outdoor determination unit
Detecting and storing output waveform data from the acceleration sensor; generating and storing amplitude data from the output waveform data; and acceleration sensor output relating to the threshold value of the amplitude data for determining whether the receiving unit is indoors or outdoors Comparing waveform amplitude threshold data with said amplitude data;
An acceleration sensor output waveform detection step comprising:
Have
The time correction method for an electronic device, wherein the reception unit is an electronic device that captures the position information satellite based on the indoor / outdoor determination unit. A receiver for receiving a satellite signal from a position information satellite orbiting the earth, and capturing the position information satellite;
A time correction unit for generating time correction information based on the satellite signal received by the reception unit;
A display information correction unit, a display time information correction step of correcting display time information based on the time correction information, a time correction method of a clock device,
In the step of capturing the position information satellite, the reception unit includes an indoor / outdoor determination unit that determines an environment of the timepiece device,
The indoor / outdoor determination unit
The step of detecting and storing the power generation amount from the solar panel, the power generation amount threshold value data of the power generation amount threshold value data storage unit for storing the power generation amount threshold value data relating to the threshold value of the power generation amount for discriminating the inside and outside of the receiving unit, and the above A step of comparing the power generation amount data with a step of detecting the power generation amount,
A step of detecting and storing output waveform data from the acceleration sensor; a step of generating and storing amplitude data from the output waveform data; and an acceleration sensor output waveform amplitude related to the amplitude data for determining whether the receiving unit is indoors or outdoors Comparing threshold data with the amplitude data;
An acceleration sensor output waveform detection step comprising:
Have
The time correction method for an electronic device, wherein the reception unit is an electronic device that captures the position information satellite based on the indoor / outdoor determination unit.

Images