JP6471425B2 - Communication device, electronic timepiece, and communication device control method - Google Patents

Description

  The present invention relates to a communication device that performs communication processing, an electronic timepiece, and a communication device control method.

Conventionally, a GPS device that receives a satellite signal transmitted from a GPS (Global Positioning System) satellite and acquires time information and position information based on the received satellite signal is known (for example, Patent Document 1).
The GPS device of Patent Document 1 includes a flash memory capable of rewriting data. The flash memory stores a program for controlling the operation of the GPS device.

JP 2009-79982 A

By the way, the flash memory consumes a relatively large amount of current. For this reason, for the purpose of reducing power consumption, it is conceivable that a mask ROM (Read Only Memory) having a current consumption smaller than that of the flash memory is provided in the GPS device instead of the flash memory, and a program is stored in the mask ROM. .
Here, it is desired that the GPS device can be used for a plurality of purposes (clock, car navigation, smartphone, logger, etc.) for generalization. Moreover, it is necessary to incorporate a dedicated program according to the application. For this reason, generally, after the GPS device is manufactured, a method of incorporating a dedicated program according to the application is used.
However, when a mask ROM is used, it is necessary to write a program at the time of manufacture of the GPS device, and a program cannot be written after the manufacture. The method of incorporation cannot be used.
For this reason, it has not been possible to reduce the power consumption of the GPS device by using a mask ROM.

  An object of the present invention is to provide a communication device, an electronic timepiece, and a communication device control method capable of reducing power consumption.

  The present invention is a communication device comprising a communication means for executing communication processing, a rewritable storage means, the communication means and a control means for controlling the storage means, wherein the communication means is a first program. Is stored in the read-only first storage unit and a rewritable second storage unit. The storage unit stores a second program, and the control unit performs the communication process on the communication unit. When executing, the second program is transmitted to the communication unit, and the communication unit stores the second program transmitted from the control unit in the second storage unit, and the first program and the second program The communication processing is performed by executing a program.

Here, the communication apparatus can be mounted on devices having different specifications, the first program is a program common to each specification, for example, and the second program is a process suitable for the specification of the mounted device, for example. It is a program that executes
According to the present invention, the control unit transmits the second program stored in the storage unit to the communication unit when the communication unit executes the communication process. The communication unit stores the second program in the second storage unit, and executes the first program and the second program. Thereby, communication processing suitable for the specification can be executed.
Moreover, since the process suitable for the specification in the communication process is executed by the second program, the first program can be a common program in each specification, and the first storage unit in which the program in the communication means is stored. It can be configured by a read-only storage device such as a mask ROM. For this reason, compared with the case where the memory | storage part in which the program in a communication means is stored is comprised, for example with flash memory, the current consumption of a communication means can be made small, and also the power consumption of a communication apparatus can be reduced.

In the communication apparatus of the present invention, the communication apparatus can be mounted on a device having a first specification and a device having a second specification, and the first program is a program common to the first and second specifications. In addition, it is preferable that the second program is a program that executes processing suitable for at least the specification of the mounted device among the first and second specifications.
According to the present invention, power consumption can be reduced, and communication processing suitable for the specifications of the mounted device can be executed.

  In the communication apparatus of the present invention, the communication means receives a satellite signal and obtains time information based on the received satellite signal, and a position calculated based on the received satellite signal. A positioning mode receiving process for acquiring information, wherein the first program includes a basic program for executing the positioning mode receiving process and a basic program for executing the positioning mode receiving process; As the second program, a time measurement program for executing a process suitable for the time measurement mode in the reception process for the time measurement mode and a process suitable for the positioning mode in the reception process for the positioning mode are executed. It is preferable that a positioning program is stored.

  According to the present invention, the communication means executes the time measurement mode basic program and the time measurement program to perform the time measurement mode reception processing, and executes the positioning mode basic program and the positioning program to execute the positioning mode. Perform reception processing. Thereby, the receiving process suitable for each mode can be executed.

  In the communication apparatus of the present invention, the communication means receives a satellite signal, performs a positioning mode reception process for acquiring position information calculated based on the received satellite signal, and the first program stores the positioning mode. The storage means includes a positioning accuracy priority program that executes processing that prioritizes positioning accuracy over shortening of reception time as the second program, and the storage unit includes the positioning accuracy priority program. It is preferable that at least one of the reception time priority programs for executing processing that prioritizes shortening of the reception time is stored.

According to the present invention, the communication means performs the reception process by executing the first program and one of the positioning accuracy priority program and the reception time priority program.
Therefore, by selecting one of the positioning accuracy priority program and the reception time priority program and causing the communication means to execute it, it is possible to select whether to prioritize the positioning accuracy or shorten the reception time in the reception process.

In the communication device according to the aspect of the invention, it is preferable that the second program includes a correction program that corrects the first program.
According to the present invention, the first program can be corrected even after the development of the communication means.

In the communication apparatus of the present invention, it is preferable that the first storage unit is a mask ROM.
Since the mask ROM consumes less than 1/5 of the flash memory, the power consumption of the communication device can be further reduced by using the mask ROM.

In the communication apparatus of the present invention, it is preferable that the storage means is an EEPROM.
According to the present invention, for example, the power consumption of the communication device can be reduced as compared with the case where the storage unit is a flash memory.

In the communication apparatus according to the aspect of the invention, it is preferable that the communication unit includes a power source, and the control unit supplies power from the power source to the communication unit when the communication unit executes the communication process.
According to the present invention, when communication processing is not performed, power is not supplied to the communication means, so that power consumption of the communication device can be reduced.

  The communication apparatus according to the present invention further comprises display means controlled by the control means, the storage means stores version information of the second program, and the control means displays the version information on the display means. It is preferable to make it.

  For example, when the communication device is used for a watch, the second program can be updated when the watch is maintained in a store. In this case, since the version information of the second program is displayed on the display means, the update work of the second program can be simplified.

An electronic timepiece according to the invention includes the communication device.
Since the communication device can reduce power consumption, the power consumption of an electronic timepiece including the communication device can also be reduced.

The present invention comprises a communication means for executing communication processing, a rewritable storage means, the communication means and a control means for controlling the storage means, and the communication means is a read-only storage storing a first program. A first storage unit and a rewritable second storage unit, wherein the storage unit is a method of controlling a communication device in which a second program is stored, and causes the communication unit to execute the communication process. At this time, the second program is transmitted to the communication means, the second program transmitted from the control means is stored in the second storage unit, the first program and the second program are executed, and the communication is performed. It is characterized by performing processing.
According to the present invention, power consumption can be reduced in the same manner as the communication device.

It is a front view of the electronic timepiece of the first embodiment. It is a schematic sectional drawing of the electronic timepiece of 1st Embodiment. It is a block diagram which shows the structure of the electronic timepiece of 1st Embodiment. It is a figure which shows the hardware of the electronic timepiece of 1st Embodiment. It is a block diagram which shows the structure of the memory | storage device of the electronic timepiece of 1st Embodiment. It is a figure explaining the structure of a navigation message. It is a flowchart which shows the manual reception process procedure of 1st Embodiment. It is a flowchart which shows the reception processing procedure of 1st Embodiment. It is a block diagram which shows the structure of the memory | storage device of the electronic timepiece of 2nd Embodiment. It is a flowchart which shows the time-measurement reception process procedure of 2nd Embodiment. It is a flowchart which shows the positioning reception process procedure of 2nd Embodiment. It is a block diagram which shows the structure of the memory | storage device of the electronic timepiece of 3rd Embodiment.

Hereinafter, specific embodiments of the present invention will be described with reference to the drawings.
[First Embodiment]
FIG. 1 is a front view of an electronic timepiece 1 according to the first embodiment of the present invention, and FIG. 2 is a schematic cross-sectional view of the electronic timepiece 1.
As shown in FIG. 1, an electronic timepiece 1 that is an electronic device receives a satellite signal from at least one GPS satellite 100 among a plurality of GPS satellites 100 orbiting over the earth in a predetermined orbit. Time information is generated, and satellite signals from at least three GPS satellites 100 are received to generate position information.

[Electronic clock]
The electronic timepiece 1 is a wristwatch worn on a user's wrist, and includes a display device 10 that displays time and the like, and an input device 70 that is an external operation member.

[Structure of electronic watch]
The electronic timepiece 1 includes an exterior case 2, a cover glass 3, and a back cover 4. The outer case 2 is configured by fitting a bezel 6 made of ceramic or metal to a cylindrical case 5 made of metal. In the case where the bezel 6 is made of ceramic, the reception performance is improved because radio waves are not blocked unlike metal. Further, when the bezel 6 is made of metal, the manufacturing cost can be reduced because it is easier to process than ceramic.
Of the two openings of the exterior case 2, the opening on the front side is closed with the cover glass 3 via the bezel 6, and the opening on the back side is closed with the back cover 4 made of metal. .

Inside the outer case 2, the dial ring 15 attached to the inner periphery of the bezel 6, the light-transmitting dial 11, the pointer shaft 27 penetrating the dial 11, and the pointer shaft 27 are attached. The pointers 21, 22, 23, the indicator needle 24, the pointers 25, 26, the pointers 21, 22, 23 and the indicator needle 24, the drive mechanism 20 that drives the hands 25, 26 are provided.
An input device 70 including a crown 71 and three buttons 72, 73 and 74 is provided on the side surface of the exterior case 2.

[Display device]
The display device 10 includes a dial plate 11, hands 21, 22, 23, indicator hands 24, hands 25, 26, and date dial.
Most of the dial plate 11 is formed of a non-metallic material (for example, plastic or glass) that easily transmits light and microwaves in the 1.5 GHz band.
The dial plate 11 includes a scale 12 corresponding to the indicator hand 24, a sub dial 13 corresponding to the hands 25 and 26, and a calendar small window 16 for displaying the date of the date indicator.

[Basic clock]
The hands 21, 22, and 23 are provided on the surface side of the dial 11. The pointer 21 is a second hand, the pointer 22 is a minute hand, and the pointer 23 is an hour hand. The dial ring 15 is provided with a scale (index) for indicating the time by the hands 21, 22 and 23.
For this reason, the hands 21, 22, 23, the dial 11, and the dial ring 15 constitute a basic timepiece for displaying time. The basic clock mainly displays the current time. For example, when the electronic timepiece 1 is used in Honolulu, the local time (local time) of Honolulu is displayed. Therefore, a time display device is constituted by the hands 21, 22, and 23.

[Indicator display]
The indicator hand 24 is provided in the 10 o'clock direction on the surface side of the dial 11 and indicates various information by indicating each position of the scale 12.
“DST (daylight saving time)” described on the scale 12 means daylight saving time. By operating the input device 70 such as the crown 71 and the button 72 and setting the indicator hand 24 to “ON” or “OFF” of “DST”, the electronic timepiece 1 can be set to ON / OFF of daylight saving time. .
The airplane-shaped symbol written on the scale 12 represents an in-flight mode. By operating the input device 70 and selecting the in-flight mode according to the indicator hand 24 in accordance with the airplane-shaped symbol, the satellite signal reception function of the electronic timepiece 1 can be prevented from working.

“E” and “F” written on the scale 12 indicate the remaining battery level.
“1” and “4+” written on the scale 12 indicate reception modes. The indicator hand 24 indicates “1” in the time measurement mode (time reception processing) for acquiring time information, and the indicator hand 24 is in the positioning mode (position reception processing) for acquiring position information. The scale 12 “4+” is indicated. Thereby, the user can recognize by looking at the scale 12 whether the electronic timepiece 1 is in the positioning mode or the time measuring mode.

[Small clock]
The hands 25 and 26 are provided in the 6 o'clock direction on the surface side of the dial 11. The pointer 25 is a minute hand and the pointer 26 is an hour hand. The sub-dial 13 is provided with a 24-hour scale that indicates the time by the hands 25 and 26.
Therefore, the hands 25 and 26 and the sub dial 13 constitute a small clock that displays time. The small clock mainly displays a preset home time (for example, Japanese time).

[Dial ring]
A dial ring 15 is disposed around the dial 11. The dial ring 15 is formed of plastic or the like, and includes a flat plate portion provided in parallel to the cover glass 3 and an inclined portion inclined from the inner periphery of the flat plate portion toward the dial plate 11 side. The outer peripheral end of the flat plate portion is in contact with the inner peripheral surface of the bezel 6, and the inner peripheral end of the inclined portion is in contact with the dial plate 11. The dial ring 15 has a ring shape in a plan view and a mortar shape in a cross-sectional view. A donut-shaped storage space is formed by the flat plate portion, the inclined portion, and the inner peripheral surface of the bezel 6 of the dial ring 15, and the ring-shaped antenna 110 is stored in the storage space.
On the dial ring 15, a scale (index) for indicating the time by the hands 21, 22 and 23, a number indicating a time zone time difference, and an abbreviation indicating a time zone city name are displayed.

[Input device]
An input device 70 is provided on the side surface of the outer case 2 as external operation means. The input device 70 includes a crown 71 and three buttons 72, 73 and 74. When the input device 70 is operated, processing corresponding to the manual operation is executed.
Specifically, when the crown 71 is pulled by one step, the currently set time zone is displayed with the pointer 21 (second hand). In order to change the currently set time zone, when the crown 71 is rotated to the right in this state, the hands 21 are moved clockwise, and the time zones incremented by “+1” are sequentially selected. On the other hand, when the crown 71 is rotated counterclockwise in this state, the time zone decremented by “−1” is selected. Then, by pushing the crown 71, the selected time zone is determined.
That is, by rotating the crown 71, the pointer 21 (second hand) is also moved in conjunction with it, and the time zone is manually selected by matching the pointer 21 with the time zone difference and city name displayed on the dial ring 15. it can.
When the crown 71 is rotated in a state where the crown 71 is pulled down, the hands 21, 22, and 23 can be moved, and the current time display can be manually corrected.

When the button 72 is pressed, processing according to the situation, such as cancellation of various operation modes and cancellation of reception processing, is executed.
When the button 73 is pressed for a first set time (for example, 3 seconds or more and less than 6 seconds) and then released, manual reception processing (forced reception processing) in the timekeeping mode is executed. During the reception process, the indicator hand 24 indicates “1” indicating the time measurement mode.
When the button 73 is pressed and released for a second set time (for example, 6 seconds or longer) longer than the first set time, manual reception processing (forced reception processing) in the positioning mode is executed. During the reception process, the indicator hand 24 indicates “4+” indicating the positioning mode.

Further, when the button 73 is pressed for a short time (for example, less than 3 seconds) shorter than the first set time and released, a result display process for displaying the result of the previous reception process is performed. That is, the most recently received mode is indicated by the indicator hand 24 indicating “1” or “4+”. The reception result is indicated by the pointer 21 indicating “Y” (reception success) or “N” (reception failure). In this embodiment, “Y” is set at the 12-second position, and “N” is set at the 18-second position.
The processing executed when the buttons 72, 73, 74 are pressed is not limited to the above, and may be set as appropriate according to the function of the electronic timepiece 1.

[solar panel]
Between the dial plate 11 and the ground plate 125 to which the drive mechanism 20 is attached, a solar panel 135 that is a solar power generation device that performs photovoltaic power generation is provided. The solar panel 135 is a circular flat plate in which a plurality of solar cells (photovoltaic elements) that convert light energy into electric energy (electric power) are connected in series. The solar panel 135 also has a sunlight detection function. The dial plate 11, the solar panel 135, and the ground plate 125 are formed with a hole through which the pointer shaft 27 passes and an opening of the calendar small window 16.

[Drive mechanism]
The drive mechanism 20 is attached to the ground plate 125 and covered with the circuit board 120 from the back side. The drive mechanism 20 includes a step motor for driving the pointer 21 (second hand), a step motor for driving the pointer 22 (minute hand) and the pointer 23 (hour hand), a step motor for driving the indicator hand 24, and hands 25 and 26. And a step motor to be driven. Furthermore, since the electronic timepiece 1 includes a date wheel for displaying the date on the calendar small window 16, it also includes a step motor for driving the date wheel.

[Circuit board]
The circuit board 120 includes a receiving device (receiving module) 30 as a satellite signal receiving device, and a control device 40. Further, a circuit holding member 124 for covering these circuit components is provided on the circuit board 120 on the side where the receiving device 30 is provided (on the back cover 4 side).
A secondary battery 130 such as a lithium ion battery is provided between the ground plate 125 and the back cover 4. The secondary battery 130 is a power storage device in which the electric power generated by the solar panel 135 is charged via the charging circuit 90 (see FIG. 3). The circuit holder 124 is provided with an opening for accommodating the secondary battery 130 in the outer case 2. In addition, a ground plate receiving ring 126 formed in an annular shape is disposed between the circuit board 120 and the antenna 110.

[antenna]
The antenna 110 is formed by using a ring-shaped dielectric as a base material and forming a metal antenna pattern on the base material by plating or silver paste printing. This antenna 110 is disposed on the outer periphery of the dial plate 11, disposed on the inner peripheral surface side of the bezel 6, and further covered with the dial ring 15 made of plastic and the cover glass 3, so that it is satisfactory. It is possible to ensure reception. As the dielectric, a dielectric material that can be used at high frequencies, such as titanium oxide, can be mixed with the resin and molded, and this makes it possible to further reduce the size of the antenna in combination with shortening the wavelength of the dielectric. The antenna is not limited to the ring antenna as in the present embodiment, and may be a patch antenna, for example.

  The antenna 110 is fed through a feeding point, and an antenna connection pin 115 disposed on the back side of the antenna 110 is connected to the feeding point. The antenna connection pin 115 is a pin-shaped connector made of metal, is disposed through the ground plane receiving ring 126, and is in contact with the circuit board 120. As a result, the circuit board 120 and the antenna 110 inside the storage space are connected by the antenna connection pins 115.

[Circuit configuration of electronic watch]
FIG. 3 is a block diagram showing a circuit configuration of the electronic timepiece 1. The electronic timepiece 1 includes a receiving device 30 (communication means), a control device 40 (control means), a timing device 50, a storage device 60 (storage means), an input device 70, and the like. The control device 40 includes reception control means 41, time correction means 42, second program transmission means 43, and version information display control means 44. The reception control means 41 includes an automatic reception control unit 411 and a manual reception control unit 412.
The display device 10 (display means), the drive mechanism 20, the receiving device 30, the reception control means 41, the second program transmission means 43, the version information display control means 44, the storage device 60, the input device 70, the charging circuit 80, two The secondary battery 130 (power source) and the solar panel 135 constitute a communication device.
FIG. 4 is a diagram illustrating a hardware configuration of the receiving device 30, the control device 40, and the storage device 60. The receiving device 30 includes an RF unit 310 and a baseband unit 320 described later. The control device 40 is configured by a CPU (Central Processing Unit), and the storage device 60 is configured by an EEP (Electronically Erasable and Programmable) ROM.

[Receiver]
The receiving device 30 is a load driven by the electric power stored in the secondary battery 130, and when driven by the control device 40, receives a satellite signal transmitted from the GPS satellite 100 through the antenna 110. That is, the receiving device 30 constitutes a communication unit of the present invention that executes communication processing. When receiving the satellite signal successfully, the receiving device 30 transmits information acquired based on the received satellite signal to the control device 40. On the other hand, when the reception of the satellite signal fails, the reception device 30 transmits information to that effect to the control device 40.

Details of the receiving device 30 will be described below with reference to FIG.
The receiving device 30 mainly includes an RF unit 310 and a baseband unit 320. The RF unit 310 and the baseband unit 320 perform processing for acquiring orbit information and satellite information such as GPS time included in the navigation message from satellite signals in the 1.5 GHz band.

  The RF unit 310 is a general one in a GPS receiver including a down converter that converts a high-frequency signal into a signal in an intermediate frequency band, an A / D converter that converts an analog signal in the intermediate frequency band into a digital signal, and the like. is there. The RF unit 310 is supplied with a reference clock from a crystal oscillation circuit (TCXO) 31 with a temperature compensation circuit.

The baseband unit 320 includes a correlator 311, a CPU 312, an input / output circuit (I / O) 313, a mask ROM 314 (first storage unit), a RAM (Random Access Memory) 315 (first unit) connected to each other via a bus 316. 2 storage unit) and the like. The CPU 312 is supplied with a reference clock from the crystal oscillator circuit 31 with a temperature compensation circuit.
The baseband unit 320 demodulates the navigation message from the digital signal (intermediate frequency band signal) output from the RF unit 310, and acquires satellite information such as orbit information and GPS time (time information) included in the navigation message. Process. Further, position information is calculated and acquired based on orbit information acquired from four or more GPS satellites 100. Then, the acquired time information and position information are transmitted to the control device 40.

Here, the first program is stored in the mask ROM 314.
In order to have versatility, the communication device is mounted on devices with different uses such as watches, car navigation systems, smartphones, loggers, etc., and even with the same watch, for example, devices for different uses such as watches for men and watches for women. Is done. Different applications have different device specifications (device size, power consumption, preferred positioning accuracy, reception time, etc.), but the first program is a common program for each specification. Here, one of the devices having different uses corresponds to a device having the first specification of the present invention, and the other corresponds to a device having the second specification of the present invention.
The first program includes a basic program that executes the reception process in the timekeeping mode and a basic program that executes the reception process in the positioning mode. The first program is written when the mask ROM 314 is manufactured, and cannot be rewritten after the receiving device 30 is manufactured.
The basic program is designed so that the reception process of each mode can be executed independently. For example, a time measurement mode basic program can acquire time information, and a positioning mode basic program can acquire time information and position information.
In other words, the first program includes a program necessary for reception processing other than the second program for executing processing suitable for the specifications of the communication device described later.
The RAM 315 temporarily stores a second program (described later) transmitted from the control device 40 at the start of the reception process.
As will be described in detail later, the CPU 312 performs reception processing by executing the first program stored in the mask ROM 314 and the second program stored in the RAM 315.

[Time measuring device]
The time measuring device 50 includes a crystal resonator driven by the power stored in the secondary battery 130 and updates time data using a reference signal based on an oscillation signal of the crystal resonator.

[Storage device]
As shown in FIG. 5, the storage device 60 includes a time data storage unit 600, a time zone data storage unit 660, a scheduled reception time storage unit 670, a second program storage unit 680, and a version information storage unit 690. I have.
The time data storage unit 600 stores reception time data 610 and leap second update data 620 acquired from satellite signals, internal time data 630, clock display time data 640, and time zone data 650.
The reception time data 610 stores time information (GPS time) acquired from the satellite signal. The leap second update data 620 stores at least current leap second data. That is, in subframe 4 and page 18 of the satellite signal, “current leap second”, “leap second update week”, “leap second update date”, and “leap second after update” are included as data relating to leap seconds. Each data is included. Among these, in the present embodiment, at least “current leap second” data is stored in the leap second update data 620.

The internal time data 630 stores internal time information. This internal time information is updated by the GPS time stored in the reception time data 610 and the “current leap second” stored in the leap second update data 620. That is, UTC (Coordinated Universal Time) is stored in the internal time data 630.
The internal time data 630 is normally updated every second by the time measuring device 50, and when time information is acquired by receiving a satellite signal, the internal time data 630 is corrected by the acquired time information. Therefore, the current UTC is stored in the internal time data 630.

  The clock display time data 640 stores time data obtained by adding the time zone data (time difference information) of the time zone data 650 to the internal time information of the internal time data 630. The time zone data 650 is set with position information obtained when the user manually sets the time zone data 650 or when receiving in the positioning mode.

  The time zone data storage unit 660 stores location information (latitude, longitude) and time zone (time difference information) in association with each other. For this reason, when the position information is acquired in the positioning mode, the control device 40 can acquire the time zone data based on the position information (latitude, longitude).

  The time zone data storage unit 660 further stores a city name and time zone data in association with each other. Therefore, as described above, when the user selects a city name for which the local time is desired by operating the input device 70 such as the crown 71, the control device 40 causes the city name set by the user to the time zone data storage unit 660. , And the time zone data corresponding to the city name is acquired and set in the time zone data 650.

  The scheduled reception time storage unit 670 stores the scheduled reception time for executing the scheduled reception process by the automatic reception control unit 411. As this scheduled reception time, the time when the forced reception was successful by operating the button 73 last time is stored.

The second program storage unit 680 stores a second program for executing a process suitable for at least the specification of the device on which the communication device is mounted in the reception process. In the present embodiment, the second program executes a process suitable for the clock specifications in the reception process.
That is, in the electronic timepiece 1, processing that can reduce power consumption is desirable. Therefore, the second program executes processing suitable for low power consumption in the reception processing.
Specifically, in the reception process, the number of clocks is reduced, the operation state of the circuit is controlled according to the number of GPS satellites 100 captured, the operation sequence is optimized according to the processing load, and the power supply for each circuit block Execute processing to control.
The second program is stored in the second program storage unit 680 when the electronic timepiece 1 is assembled. In addition, the electronic timepiece 1 can be updated after the shipment of the electronic timepiece 1 at a store maintenance.

  The version information storage unit 690 stores version information of the second program stored in the second program storage unit 680.

Note that orbit information (almanac, ephemeris) of the GPS satellite 100 is not stored in the storage device 60. The electronic timepiece 1 is a wristwatch, and the capacity of the storage device 60 is also limited, and the capacity of the secondary battery 130 is also limited, so that it is difficult to perform long-time reception for acquiring trajectory information. Because. Therefore, the reception processing of the electronic timepiece 1 is performed in a cold start state that does not have orbit information.
Although not shown, the position information (latitude, longitude) obtained by the positioning reception process, that is, the current position of the electronic timepiece 1 may be stored.

[Control device]
The control device 40 is composed of a CPU (see FIG. 4) that controls the electronic timepiece 1. The control device 40 includes reception control means 41 that causes the reception device 30 to execute reception processing. The reception control means 41 includes an automatic reception control unit 411 and a manual reception control unit 412. In addition, the control device 40 includes time correction means 42 that corrects the time measured by the internal time data 630 based on the time information acquired by the reception device 30. In addition, the control device 40 includes second program transmission means 43 and version information display control means 44.

[Automatic reception controller]
The automatic reception control unit 411 operates the reception device 30 when the scheduled reception time set in the scheduled reception time storage unit 670 is reached and when the generated voltage or generated current of the solar panel 135 is equal to or greater than the set value. Then, the reception process in the timekeeping mode is executed.
That is, the automatic reception control unit 411 operates the reception device 30 to perform reception processing when the clocked time, specifically the internal time data 630, reaches the scheduled reception time stored in the scheduled reception time storage unit 670. Is executed. This reception process is called a regular reception process.
The automatic reception control unit 411 operates the receiving device 30 when the generated voltage or generated current of the solar panel 135 is equal to or higher than the set value and it can be determined that the solar panel 135 is irradiated with sunlight outdoors. It should be noted that the number of processes for operating the receiving device 30 in the power generation state of the solar panel 135 may be limited to once a day.

  When the automatic reception control unit 411 instructs the start of reception processing, the reception device 30 acquires at least one GPS satellite 100, receives a satellite signal transmitted from the GPS satellite 100, and acquires time information. When the receiving device 30 succeeds in acquiring the time information, the time correcting unit 42 corrects the internal time data 630 with the acquired time information.

[Manual reception control unit]
When the user presses the button 73 of the input device 70 to perform a forced reception operation, the manual reception control unit 412 operates the reception device 30 to execute reception processing.
At this time, as described above, the manual reception control unit 412 switches the reception processing in the timekeeping mode and the reception processing in the positioning mode according to the time during which the button 73 is pressed, and causes the reception device 30 to execute.

  When the manual reception control unit 412 commands the start of reception processing in the timekeeping mode, the receiving device 30 captures at least one GPS satellite 100, receives a satellite signal transmitted from the GPS satellite 100, and receives time information. To get. When the receiving device 30 succeeds in acquiring the time information, the time correcting unit 42 corrects the internal time data 630 with the acquired time information.

When the manual reception control unit 412 commands the start of reception processing in the positioning mode, the receiving device 30 captures at least three, preferably four or more GPS satellites 100, and transmits satellite signals transmitted from the GPS satellites 100. Is received to acquire trajectory information and time information, and further, position information is calculated and acquired based on the trajectory information. When the receiving device 30 has successfully acquired the position information, the control device 40 acquires time zone data (time difference information) from the time zone data storage unit 660 based on the acquired position information (latitude, longitude). And stored in the time zone data 650.
For example, since Japan Standard Time (JST) is a time (UTC + 9) advanced by 9 hours with respect to UTC, when the position information acquired in the positioning mode is Japan, the control device 40 includes a time zone data storage unit. The time difference information (+9 hours) in Japan standard time is read from 660 and stored in the time zone data 650. Therefore, the clock display time data 640 is a time obtained by adding the time zone data to the internal time data 630 which is UTC.

[Time correction means]
When the time information is acquired by the reception control means 41 and the internal time data 630 is updated, the time adjustment means 42 moves the hands 21, 22, and 23 based on the clock display time data 640 and displays the time display. Update.

[Second program transmission means]
The second program transmission unit 43 is operated by the reception control unit 41 and transmits the second program stored in the second program storage unit 680 to the reception device 30.

[Version information display control means]
The version information display control unit 44 stores the version information stored in the version information storage unit 690 when the user performs a version information display operation by simultaneously pressing the button 72 and the button 73 of the input device 70 for 10 seconds or more. Based on this, the hands 21, 22, and 23 are moved, and the version information is displayed on the display device 10.
For example, if the version information is “1”, the version information display control unit 44 instructs the pointer 21 (second hand) to specify the 10-second position, and if the version information is “2”, the version information display control unit 44 sets the 20-second position to the pointer 21. Let me tell you. Also, for example, if the version information is “1.1”, the pointer 21 is instructed at the 11-second position, and if the version information is “2.5”, the pointer 21 is instructed at the 25-second position.

[Navigation message]
Here, the navigation message of the satellite signal transmitted from the GPS satellite 100 will be described with reference to FIG. The navigation message is modulated into satellite radio waves as 50 bps data.
FIGS. 6A to 6C are diagrams for explaining the configuration of the navigation message.
As shown in FIG. 6 (A), the navigation message is configured as data with a main frame of 1500 bits as a unit. The main frame is divided into five sub-frames 1 to 5 each having 300 bits. One subframe of data is transmitted in 6 seconds from each GPS satellite. Accordingly, data of one main frame is transmitted from each GPS satellite in 30 seconds.

Subframe 1 includes week number data (WN: week number) and satellite correction data.
The week number data is information representing a week including the current GPS time information, and is updated on a weekly basis.
Subframes 2 and 3 include ephemeris parameters (detailed orbit information of each GPS satellite). The subframes 4 and 5 include almanac parameters (general orbit information of all GPS satellites).

  Further, subframes 1 to 5 include, from the beginning, a TLM (Telemetry) word storing 30-bit TLM (Telemetry word) data and a HOW word storing 30-bit HOW (hand over word) data. It is.

  Therefore, TLM words and HOW words are transmitted from GPS satellites at intervals of 6 seconds, whereas week number data, satellite correction data, ephemeris parameters, and almanac parameters are transmitted at intervals of 30 seconds.

As shown in FIG. 6B, the TLM word includes preamble data, a TLM message, a reserved bit, and parity data.
As shown in FIG. 6C, the HOW word includes GPS time information called TOW (Time of Week, also referred to as “Z count”). In the Z count data, the elapsed time from 0 o'clock every Sunday is displayed in seconds, and it returns to 0 at 0 o'clock on the next Sunday. That is, the Z count data is information in units of seconds indicated every week from the beginning of the week. This Z count data indicates GPS time information at which the first bit of the next subframe data is transmitted.

Therefore, the electronic timepiece 1 can acquire date information and time information by acquiring the week number data included in the subframe 1 and the HOW word (Z count data) included in the subframes 1 to 5. However, if the electronic timepiece 1 has previously acquired week number data and is counting the elapsed time since the time when the week number data was acquired internally, the current time of the GPS satellite can be obtained without acquiring the week number data. Week number data can be obtained.
Therefore, the electronic timepiece 1 only needs to acquire the week number data of the subframe 1 only when the week number data (date information) is not stored therein after resetting or when the power is turned on. When the week number data is stored, the electronic timepiece 1 can obtain the current time by acquiring the TOW transmitted every 6 seconds. For this reason, the electronic timepiece 1 usually acquires only TOW as time information.

[Manual reception processing]
Next, the reception process of the electronic timepiece 1 will be described with reference to the flowcharts of FIGS.
FIG. 7 is a flowchart showing the manual reception process executed by the manual reception control unit 412 of the reception control means 41, and FIG. 8 is a flowchart showing the reception process.

In a state where the normal time is displayed by the hands 21, 22, and 23 (normal time display mode), the manual reception control unit 412 determines whether or not a manual time measurement reception operation has been performed by the user (S11). The manual reception control unit 412 determines “YES” in step S <b> 11 when the user presses the button 73 for the first set time (3 seconds or more and less than 6 seconds) and the manual time measurement reception operation is performed.
If manual reception control part 412 determines with "YES" at Step S11, it will perform time measurement reception processing (S12).
On the other hand, if the manual reception control unit 412 determines NO in step S11, it determines whether or not a manual positioning reception operation has been performed by the user (S13). When the user presses the button 73 for the second set time (6 seconds or longer) and the manual positioning reception operation is performed, the manual reception control unit 412 determines “YES” in step S13 and executes the positioning reception process. (S14).

If the manual reception control unit 412 determines NO in step S13, the process returns to step S11. That is, the manual reception control unit 412 always monitors whether the button 73 is pressed for the first predetermined time or the second predetermined time in the normal time display mode, and the button 73 is set by the user for the first set time and the second set time. Normal time will continue to be displayed unless time is pressed.
When the time measurement reception process in step S12 and the positioning reception process in step S14 are completed, the manual reception control unit 412 returns to the normal time display mode for displaying the normal time.

[Time reception processing and positioning reception processing]
Next, the time measurement reception process in step S12 and the positioning reception process in step S14 will be described. In the time measurement reception process and the positioning reception process, the number of satellites to be captured and information to be acquired are different, but the main procedures are the same, and therefore will be described together. Note that the time reception process performed by the automatic reception control unit 411 is the same as the time reception process in step S12, and a description thereof will be omitted.
As described above, the reception control means 41 performs reception control in a cold start state in which the satellite currently present in the sky and capable of receiving satellite signals is not grasped.

Before starting the reception process, since the power supply of the reception device 30 is turned off, as shown in FIG. 8, the reception control means 41 turns on the power supply of the reception device 30 (S20). That is, power is supplied from the secondary battery 130 to the receiving device 30.
Next, the reception control unit 41 operates the second program transmission unit 43 to transmit the second program stored in the second program storage unit 680 to the reception device 30 (S30). The reception control means 41 instructs the reception device 30 to execute the reception process in the time measurement mode in the case of the time measurement reception process, and to execute the reception process in the positioning mode in the case of the positioning reception process. Command.

The receiving device 30 receives the second program and stores it in the RAM 315. In addition, the receiving device 30 executes the first program stored in the mask ROM 314 by the CPU 312. At this time, if execution of the reception process in the timekeeping mode is instructed, the basic program in the timekeeping mode is executed, and if execution of the reception process in the positioning mode is instructed, the basic program in the positioning mode is executed. Run.
When the first program is executed, an address in the mask ROM 314 is specified and the program is executed. When the address is incremented and reaches a predetermined address, a predetermined address in the RAM 315 is specified this time. The second program is executed. When the second program ends, the address in the mask ROM 314 is designated again and the first program is executed.
In this way, the first program and the second program are executed, and the processes of steps S40 and S50 are executed under control suitable for the specifications of the watch.

In step S40, the receiving device 30 searches for the GPS satellite 100. Here, the receiving device 30 searches for a GPS satellite 100 having a received signal level equal to or higher than the predetermined value by setting a threshold value of the received signal level to a predetermined value.
Then, the receiving device 30 receives a satellite signal from the GPS satellite 100 captured by the search, and acquires satellite information (S50).
Here, in the reception process in the timekeeping mode, the receiving device 30 captures at least one GPS satellite 100, receives a satellite signal transmitted from the GPS satellite 100, and acquires time information. In the case of positioning mode reception processing, at least three, preferably four or more GPS satellites 100 are captured, satellite signals transmitted from the GPS satellites 100 are received to obtain orbit information and time information, and Position information is calculated and acquired based on the trajectory information.
Then, the reception device 30 transmits the acquired time information and position information to the control device 40.

  Next, the reception control means 41 turns off the power of the receiving device 30 (S60). That is, the supply of power from the secondary battery 130 to the receiving device 30 is stopped. And the reception control means 41 complete | finishes a process.

[Effects of First Embodiment]
Since the receiving device 30 performs the receiving process by executing the first program and the second program, the receiving apparatus 30 can execute the receiving process suitable for the specifications of the watch. That is, it is possible to execute a reception process with less power consumption than when the first program is operated alone.
In addition, since the processing suitable for the specification of the watch is executed by the second program, the first program can be a common program for each specification, and the storage unit in which the first program of the receiving device 30 is stored. Can be configured by the mask ROM 314. For this reason, compared with the case where the memory | storage part in which the program in the receiver 30 is stored is comprised, for example with flash memory, the current consumption of the receiver 30 can be made small, and also the power consumption of the electronic timepiece 1 can be reduced. .

  Since the second program is stored in the rewritable storage device 60, it can be written when the electronic timepiece 1 is assembled. For this reason, when developing the electronic timepiece 1, it is sufficient that development of a program for executing processing suitable for the timepiece specification in reception processing is completed by the time of assembly, and a development period can be extended.

  Since the storage unit in which the first program is stored is configured by the mask ROM 314, the power consumption of the electronic timepiece 1 can be further reduced.

  Since the storage device 60 in which the second program is stored is an EEPROM, for example, the power consumption of the electronic timepiece 1 can be reduced compared to the case where the storage device 60 is a flash memory.

  When the reception process is not performed, power is not supplied to the receiving device 30, so that the power consumption of the electronic timepiece 1 can be further reduced.

  Since the version information display control means 44 displays the version information of the second program on the display device 10, it is possible to simplify the update operation of the second program when maintaining the electronic timepiece 1 in the store.

[Second Embodiment]
Next, a second embodiment of the present invention will be described.
The second embodiment is different from the first embodiment in that a separate second program is used for the time measurement mode reception process and the positioning mode reception process.
FIG. 9 is a block diagram illustrating a configuration of the storage device according to the second embodiment.
As shown in FIG. 9, in the storage device 60A of the second embodiment, two second programs are stored in the second program storage unit 680A. Specifically, a time measurement program and a positioning program are stored.
The program for timekeeping is a program that executes processing suitable for the timekeeping mode in the reception processing in the timekeeping mode, and the program for positioning is a program that executes processing suitable for the positioning mode in the reception processing in the positioning mode. It is.
Specifically, the time measurement program and the positioning program are programs for setting the satellite tracking time in the reception process and the number of captured satellites serving as a reference for stopping the reception process to values suitable for each mode. For example, the timekeeping mode requires fewer satellites than the positioning mode, so if the number of captured satellites, which is the reference for stopping reception processing, is the same in each mode, the timekeeping mode is more than necessary. The satellite will be captured. By setting this to a value suitable for the time measurement mode, it is not necessary to capture unnecessary satellites, so that power consumption can be reduced.
In the second embodiment, the control device 40 transmits a time measurement program to the receiving device 30 when executing the time reception processing, and executes the positioning program when executing the positioning reception processing. Transmit to the receiver 30.

FIG. 10 is a flowchart showing time measurement reception processing in the second embodiment.
In the second embodiment, in the time measurement reception process, as shown in FIG. 10, the processes of S20, S31, S40, S50, and S60 are performed. Here, the processing of S20, S40, S50, and S60 is the same processing as S20, S40, S50, and S60 shown in FIG. 8 in the first embodiment, and thus the description thereof is omitted.
In the time measurement reception process of the second embodiment, after the process of S20, the reception control means 41 operates the second program transmission means 43 to store the time measurement program and the positioning data stored in the second program storage unit 680A. Of the programs, only the time measurement program is transmitted to the receiving device 30 (S31).
Then, in the receiving device 30, the basic program of the timekeeping mode and the program for timekeeping of the first program are executed, and the processes of steps S40 and S50 are executed under control suitable for the timekeeping mode.

FIG. 11 is a flowchart showing the positioning reception process in the second embodiment.
In the second embodiment, in the positioning reception process, as shown in FIG. 11, the processes of S20, S32, S40, S50, and S60 are performed. Here, the processing of S20, S40, S50, and S60 is the same processing as S20, S40, S50, and S60 shown in FIG. 8 in the first embodiment, and thus the description thereof is omitted.
In the positioning reception process of the second embodiment, after the process of S20, the reception control means 41 operates the second program transmission means 43, and the time measurement program and the positioning program stored in the second program storage unit 680A. Among them, only the positioning program is transmitted to the receiving device 30 (S32).
Then, in the receiving device 30, the basic program and positioning program of the first program in the positioning mode are executed, and the processes in steps S40 and S50 are executed under control suitable for the positioning mode.

Thus, in the second embodiment, reception processing suitable for each mode of the time measurement mode and the positioning mode can be executed.
In the present embodiment, in the time measurement reception process and the positioning reception process, either the time measurement program or the positioning program is transmitted from the control device 40 to the reception device 30, but both are transmitted to the reception device 30. It is possible to transmit and the receiver 30 to select and execute either one. However, in this case, since it takes a long time to transmit the second program, it is preferable to transmit only one of them.

[Third Embodiment]
Next, a third embodiment of the present invention will be described.
The third embodiment is different from the first embodiment in that a separate second program is used depending on which one of the reception time reduction and the positioning accuracy is prioritized in the reception process.
FIG. 12 is a block diagram illustrating a configuration of the storage device according to the third embodiment.
As shown in FIG. 12, in the storage device 60B of the third embodiment, two second programs are stored in the second program storage unit 680B. Specifically, a positioning accuracy priority program and a reception time priority program are stored.
The positioning accuracy priority program is a program that executes processing that prioritizes positioning accuracy over reception time reduction in reception processing, and the reception time priority program prioritizes reduction in reception time over positioning accuracy in reception processing. It is a program that executes processing.

The positioning accuracy priority program is applied to a device that obtains a position by positioning used for running, mountain climbing, and health management.
By calculating the position with high accuracy, the device knows the detailed movement distance per hour, the calorie consumption, and the like, and therefore enables precise management.
For this reason, the positioning accuracy priority program executes a process for increasing the positioning accuracy.
Specifically, increase the clock frequency at the time of calculation and perform many calculations in a short time to obtain positioning results, or accurately track signals whose frequency fluctuates even in environments where radio waves are disturbed or difficult to reach The process which suppresses an error is performed.

The reception time priority program is applied to a wristwatch that calculates a position, obtains a time zone corresponding to the position, and corrects the local time.
The wristwatch can shorten the waiting time of the user and improve convenience by performing reception in a short time. Further, when the current consumption at the time of reception is reduced, the battery size can be reduced, and a small-sized wristwatch can be obtained.
In addition, since the location where the user is present is not known when receiving the satellite signal, the wristwatch performs reception with a cold start that does not use the almanac that is the orbit information of the satellite. When a cold start is received, all GPS satellites are searched.
For this reason, the reception time priority program executes processing that can shorten the reception time and reduce the current consumption during reception in the cold start reception processing.
Specifically, since shortening the satellite search time is effective for short-time reception, the parameter range necessary for searching the satellite is limited in order to shorten the reception time. Then, the satellite is searched for a predetermined time, and reception is stopped when the satellite does not exist.

In the third embodiment, the reception control unit 41 operates the second program transmission unit 43 when the reception device 30 executes the reception process, and the positioning accuracy priority program stored in the second program storage unit 680B and Of the reception time priority programs, the program set in advance is transmitted to the receiving device 30.
Here, the program transmitted to the receiving device 30 may be set by the user operating the input device 70 or may be set when the electronic timepiece 1 is shipped.
Then, in the receiving device 30, the first program and one of the positioning accuracy priority program and the reception time priority program are executed, and reception processing is performed.

According to the present embodiment, in the reception process, it is possible to select whether to give priority to positioning accuracy or to give priority to shortening the reception time.
In the present embodiment, both the positioning accuracy priority program and the reception time priority program are stored in the second program storage unit 680B, but only one selected program may be stored.

[Modification]
It should be noted that the present invention is not limited to the above-described embodiments, and modifications, improvements, and the like within the scope that can achieve the object of the present invention are included in the present invention.
For example, in the above-described embodiment, one of the purposes is to generalize the receiving device 30, but the present invention can be used to program a receiving process even if the receiving device 30 is not related to generalization. It can be applied when it is necessary to incorporate it after development. That is, in the embodiment, the first program is a program common to each specification, and the second program is a program that executes processing suitable for the specification, but the present invention is not limited to this. For example, the second program may be a program that modifies the first program. In this case, the first program can be corrected even after the receiving device 30 is developed. Moreover, the said correction program may be contained in each 2nd program of the said embodiment.

  In the embodiment, the communication means is the receiving device 30 that receives a satellite signal, but the present invention is not limited to this. That is, it may be a device that receives other types of radio waves, or a device that transmits and receives radio waves. An example of such a device is a communication device that performs communication using Bluetooth (registered trademark).

In the embodiment, the storage device 60 is configured by an EEPROM, but the present invention is not limited to this. That is, it may be composed of other types of rewritable storage devices.
In the embodiment, in the receiving device 30, the first program is stored in the mask ROM 314. However, the present invention is not limited to this. That is, it may be configured to be stored in another type of read-only storage device.
Moreover, in the said embodiment, although the 2nd program transmitted from the control apparatus 40 in the receiver 30 is stored in RAM315, this invention is not limited to this. That is, it may be configured to be stored in another type of rewritable storage device.

In the second embodiment, a time measurement program and a positioning program are used. However, the positioning program further includes a program that prioritizes positioning accuracy and a reception time as in the third embodiment. And a program that prioritizes the shortening.
In this case, in the positioning reception process, the program selected in advance is transmitted to the receiving device 30.

In the two embodiments, the first program includes a basic program for reception processing in the timekeeping mode and a basic program for reception processing in the positioning mode, and the second program storage unit 680A stores the second program as: In the reception process of each mode, a time measurement program for executing a process suitable for the time measurement mode and a positioning program for executing a process suitable for the positioning mode are stored, but the present invention is not limited to this. .
For example, the first program is a program common to the reception process in the time mode and the reception process in the positioning mode. The time measurement program includes other programs necessary for the reception process in the time mode and is used for positioning. The program may include other programs necessary for receiving processing in the positioning mode. Further, in a plurality of uses of the communication device, when the timekeeping mode is unnecessary, only the basic program of the positioning mode may be included as the first program.

  DESCRIPTION OF SYMBOLS 1 ... Electronic timepiece, 10 ... Display apparatus, 100 ... GPS satellite, 130 ... Secondary battery, 30 ... Receiving device, 40 ... Control apparatus, 41 ... Reception control means, 411 ... Automatic reception control part, 412 ... Manual reception control part , 42 ... time correction means, 43 ... second program transmission means, 44 ... version information display control means, 60, 60A, 60B ... storage device, 680, 680A, 680B ... second program storage section, 690 ... version information storage section 314 ... Mask ROM, 315 ... RAM.

Claims (10)

A communication device comprising communication means for executing communication processing, rewritable storage means, the communication means and control means for controlling the storage means,
The communication device can be mounted on a device having a first specification and a device having a second specification,
The communication means includes a read-only first storage unit storing a first program and a rewritable second storage unit,
The storage means stores a second program,
The first program is a program common to the first and second specifications, and the second program performs processing suitable for at least the specification of the device to be mounted out of the first and second specifications. A program to be executed,
When the control unit causes the communication unit to execute the communication process, the control unit transmits the second program to the communication unit,
The communication means stores the second program transmitted from the control means in the second storage unit, and executes the communication processing by executing the first program and the second program. apparatus. A communication device comprising communication means for executing communication processing, rewritable storage means, the communication means and control means for controlling the storage means,
The communication means includes a read-only first storage unit storing a first program and a rewritable second storage unit,
The storage means stores a second program,
The communication means receives a satellite signal as the communication process, and obtains time information based on the received satellite signal, and a position information calculated based on the received satellite signal. Perform the reception processing of the positioning mode to be acquired,
The first program includes a basic program that executes the reception process in the timekeeping mode and a basic program that executes the reception process in the positioning mode,
In the storage means, as the second program, a timing program for executing processing suitable for the timekeeping mode in the timekeeping mode reception processing, and a positioning program suitable for the positioning mode in the positioning mode reception processing Stores a positioning program that executes processing ,
Wherein, the time to execute the receiving process of the the communication means timekeeping mode, the said measuring time program as the second program transmitted to the communication means, receiving processing of the positioning mode to said communication means When performing the above, the positioning program is transmitted to the communication means as the second program,
The communication means stores the second program transmitted from the control means in the second storage unit, and executes the communication processing by executing the first program and the second program. apparatus. A communication device comprising communication means for executing communication processing, rewritable storage means, the communication means and control means for controlling the storage means,
The communication means includes a read-only first storage unit storing a first program and a rewritable second storage unit,
The storage means stores a second program,
The communication means receives a satellite signal as the communication process, and performs a positioning mode reception process for acquiring position information calculated based on the received satellite signal;
The first program includes a basic program for executing the positioning mode reception process,
The storage means executes, as the second program, a positioning accuracy priority program that executes processing that prioritizes positioning accuracy over shortening of receiving time, and processing that prioritizes shortening of the receiving time over positioning accuracy. Stores at least one of the reception time priority programs ,
When the control unit causes the communication unit to execute the communication process, the control unit transmits the second program to the communication unit,
The communication means stores the second program transmitted from the control means in the second storage unit, and executes the communication processing by executing the first program and the second program. apparatus. A communication device comprising communication means for executing communication processing, rewritable storage means, the communication means and control means for controlling the storage means,
Comprising display means controlled by the control means,
The communication means includes a read-only first storage unit storing a first program and a rewritable second storage unit,
The storage means stores a second program and version information of the second program ,
When the control unit causes the communication unit to execute the communication process, the control unit transmits the second program to the communication unit,
The communication means stores said second program transmitted from said control means to the second storage unit, have a row of the communication process executes the first program and the second program,
The communication device comprises a version information display control means for displaying the version information on the display means . The communication apparatus according to any one of claims 1 to 4,
The communication apparatus, wherein the second program includes a correction program for correcting the first program. The communication device according to any one of claims 1 to 5,
The communication device, wherein the first storage unit is a mask ROM. The communication apparatus according to any one of claims 1 to 6,
The communication device is characterized in that the storage means is an EEPROM. The communication device according to any one of claims 1 to 7,
With power supply,
The control unit causes the communication unit to supply power to the communication unit when the communication unit executes the communication process. An electronic timepiece comprising the communication device according to any one of claims 1 to 8 . A communication unit that executes communication processing; a rewritable storage unit; and the communication unit and a control unit that controls the storage unit. The communication unit includes a first specification device and a second specification device. may be implemented in, first storage unit of the read-only first program is stored, and includes a second storage unit capable of rewriting, the said storage means, control of the communication device in which the second program is stored A method,
The first program is a program common to the first and second specifications, and the second program performs processing suitable for at least the specification of the device to be mounted out of the first and second specifications. A program to be executed,
When causing the communication means to execute the communication process, the second program is transmitted to the communication means,
A method for controlling a communication apparatus, comprising: storing the second program transmitted from the control unit in the second storage unit; and executing the communication process by executing the first program and the second program.

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