JP2014032141A - Communication terminal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the current time from being subjected to setting change by time data having a low reliability order transmitted from an information terminal.SOLUTION: A communication terminal includes: a timing part for timing the current time; a communication part for receiving time data from the information terminal and a time providing part; a time acquisition part for acquiring time included in the received time data, and acquisition destination information for identifying the time providing part for transmitting the time; a time setting part; a storing part for storing a reliability table in which a reliability order indicating reliability height of the time providing part is set in advance, an acquisition time set in the current time and the acquisition destination information of the acquisition time; and a reliability comparison part for reading a first reliability order of the acquisition destination information included in the time data acquired from the information terminal, and a second reliability order of the acquisition destination information stored in the storing part to compare the first and second reliability orders. In the case that the first reliability order is higher than the second reliability order, the time acquired from the information terminal by the time setting part is set to the current time.

Description

  The present invention relates to a communication terminal, and more particularly to a communication terminal having a time setting function.

Today, many information communication devices such as personal computers and mobile phones have a time setting function capable of setting and displaying the current time.
In addition, small communication terminals that use short-range wireless communication means such as Bluetooth (registered trademark) and can perform data communication with portable terminals such as mobile phones and smartphones are used.
Some of these communication terminals also have a time setting function, and some have a function of acquiring time data from a portable terminal and correcting the current time of the communication terminal (see Patent Document 1).

Furthermore, electronic clocks and communication terminals that receive standard radio waves transmitted from standard radio wave transmission stations that provide accurate time data and set the current time are also used.
In consideration of the fact that it takes a relatively long time (several minutes) to receive such a standard radio wave and may not be able to be received, time data is received from the standard radio wave reception function and an information communication device such as a mobile phone. There is also proposed a communication terminal that has a function to acquire the current time and corrects the current time of the self.

  For example, Patent Document 2 includes means for acquiring time data from an external device (mobile phone) and means for receiving a standard radio wave, and corrects the current time data based on the time data acquired from the external device. Later, there has been proposed an arm-mounted terminal that uses the received standard radio wave to correct current time data in seconds.

  Further, Patent Document 3 calculates and stores a time difference between a means for receiving a standard radio wave, a means for receiving time data from an external device, and a time received from the external device and a time obtained from the standard radio wave. There has been proposed an arm-mounted terminal that corrects an internal clock by correcting time data received from an external device based on a stored time difference.

JP 2009-118403 A JP 2011-112472 A JP 2011-47727 A

However, in the above prior art, in addition to the standard radio wave, time data is acquired from an external device such as a portable terminal, and the current time is corrected based on the time data, but the time transmitted from the external device Data may be inaccurate or unreliable.
Even if the communication terminal to correct the current time is already set to the correct time, when the time correction function is activated, the time is corrected based on the time data acquired from the external device. As a result, the current time may be corrected to an incorrect time.
Further, the conventional communication terminal does not determine whether or not the time data acquired from the external device to correct the current time is more reliable than the currently set current time.

  Therefore, the present invention has been made in view of the above circumstances, and when the current time is corrected, the current time is set and changed by time data having lower reliability than the current time. It is an object to prevent this.

  The present invention relates to a timekeeping unit that counts the current time, a communication unit that receives time data from a predetermined information terminal and a time providing unit that provides time, a time included in the received time data, and a transmission of the time The time acquisition unit for acquiring the acquisition destination information for identifying the time providing unit, the time setting unit for setting the acquired time to the current time, and the reliability of the time providing unit for providing the time. A reliability table in which reliability rankings to be set are set in advance, an acquisition time set at the current time, a storage unit that stores acquisition source information of the acquisition time, and an acquisition included in the time data acquired from the information terminal A reliability for reading the first reliability ranking of the destination information and the second reliability ranking of the acquisition destination information stored in the storage unit from the reliability table and comparing the first and second reliability rankings Sex comparison When the first reliability ranking is higher than the second reliability ranking or the same as the second reliability ranking as a result of the comparison, the time setting unit acquires from the information terminal The present invention provides a communication terminal characterized in that the time is set to the current time.

  According to this, when the first reliability ranking of the acquisition destination information included in the acquired time data is higher than or the same as the second reliability ranking of the acquisition destination information stored in the storage unit Since the current time setting is changed, the current time of the communication terminal can always be set according to the time acquired from a highly reliable acquisition source.

In addition, when the first reliability rank is lower than the second reliability rank as a result of the comparison by the reliability comparison section, the time setting section does not change the current time.
According to this, when the reliability ranking of the acquisition destination information included in the acquired time data is lower than the reliability ranking of the acquisition destination information stored in the storage unit, the current time is not changed, so the current time However, it is possible to prevent the time from being changed to an inaccurate time acquired from an unreliable acquisition source.

  The time providing unit includes at least one of a standard radio wave transmitting station that transmits a standard radio wave including time data and a time server that transmits time data via a predetermined communication network. In the table, the reliability ranking of the standard radio wave transmission station and the time server is set.

  Further, the communication with the information terminal performed by the communication unit is performed by short-range wireless communication that is established when the distance to the information terminal is within a predetermined communicable distance.

  In addition, the information terminal is a portable terminal capable of short-range wireless communication, and sets the current time based on the time data received from the time providing unit, the set current time, and the current time Transmission time data including acquisition destination information for identifying a time providing unit that has transmitted the time is transmitted by short-range wireless communication.

  In addition, the time setting unit sets the time acquired from the information terminal as the current time, and after a predetermined time has elapsed, the reliability of the reliability table corresponding to the acquisition destination information stored in the storage unit It is characterized by lowering the sex rank.

  The present invention is also a time setting system comprising an information terminal, a communication terminal that performs near field communication with the information terminal, and a time providing unit that provides time to the information terminal and the communication terminal, The communication terminal has transmitted the first timekeeping unit that measures the current time, the first communication unit that receives time data from the information terminal and the time providing unit, the time included in the received time data, and the time High reliability of a first time acquisition unit that acquires acquisition destination information for identifying a time providing unit, a first time setting unit that sets the acquired time as a current time, and a time providing unit that provides the time A reliability table in which a reliability ranking indicating the reliability is set in advance, an acquisition time set at the current time, and an acquisition destination information of the acquisition time, and time data acquired from the information terminal Get included in The first reliability ranking of information and the second reliability ranking of the acquisition destination information stored in the first storage unit are read from the reliability table, and the first and second reliability rankings are compared. A reliability comparing unit, wherein the information terminal measures a second time measuring unit that measures the current time, a second communication unit that receives time data from the time providing unit, and a time included in the received time data, A second time acquisition unit that acquires acquisition destination information that identifies a time providing unit that has transmitted the time, a second time setting unit that sets the acquired time as the current time, and an acquisition set as the current time Acquisition destination information for identifying the second storage unit that stores the time and the acquisition destination information of the acquisition time, the set current time, and the time providing unit that has transmitted the acquisition time set to the current time Transmission time data including A time notification unit for transmitting to the communication terminal, wherein the reliability comparison unit of the communication terminal includes a first reliability ranking of the supplier information included in the transmission time data transmitted from the time notification unit of the information terminal; When the first reliability ranking is higher than or equal to the second reliability ranking as a result of comparing the second reliability ranking, the first time setting unit is The current time included in the transmission time data is set to the current time of the communication terminal, and when the first reliability rank is lower than the second reliability rank, the current time of the communication terminal is not changed. A characteristic time setting system is provided.

  Furthermore, the present invention is a time setting system comprising a plurality of communication terminals that perform short-range wireless communication with each other and a plurality of time providing units that provide time to the communication terminals, wherein each of the communication terminals A timing unit that counts the current time, a communication unit that receives time data from another communication terminal and the time providing unit, a time included in the received time data, and a time providing unit that has transmitted the time A time acquisition unit that acquires identification source information to be identified; a time setting unit that sets the acquired time as a current time; and a reliability in which a reliability ranking indicating the reliability of the time providing unit is set in advance A storage unit storing a table, an acquisition time set as the current time, and acquisition destination information of the acquisition time, and a first reliability ranking of the acquisition destination information included in the time data acquired from the other communication terminal And the storage unit The current reliability set by the time comparison unit and the reliability comparison unit that reads out the second reliability ranking of the stored acquisition source information from the reliability table and compares the first and second reliability rankings. A time notifying unit that transmits transmission time data including time and acquisition destination information that identifies a time providing unit that has transmitted the acquisition time set to the current time to the other communication terminal, the arbitrary The reliability comparison unit of the communication terminal A compares the first and second reliability ranks. As a result, the first reliability rank is higher than the second reliability rank or the same as the second reliability rank. In some cases, the time setting unit sets the current time B included in the transmission time data transmitted from the other communication terminal B to the current time A of the communication terminal A, and the first reliability ranking Is lower than the second reliability ranking If, there is provided a time setting system characterized by not setting change the current time A of the communication terminal A.

  According to this invention, the first reliability ranking of the acquisition destination information included in the time data acquired from the information terminal is compared with the second reliability ranking of the acquisition destination information stored in the storage unit, When 1 reliability rank is higher than the 2nd reliability rank, or when it is the same as the 2nd reliability rank, since the time acquired from the information terminal is set as the current time, the current time of the communication terminal is It can always be set according to the time acquired from a reliable source.

  In addition, when the first reliability ranking is lower than the second reliability ranking, the current time is not set and changed, so that the currently set current time is maintained as it is, and an inaccurate information obtained from an acquisition source with low reliability is maintained. It can be prevented that the time is changed.

1 is a configuration block diagram of an embodiment of a time setting system of the present invention. It is a block diagram of the configuration of an embodiment of the portable terminal of the present invention. It is a block diagram of an embodiment of an accessory terminal according to the present invention. It is explanatory drawing of one Example of the reliability table utilized by this invention. It is a flowchart of one Example of the time acquisition process of this invention. It is a flowchart of one Example of the time acquisition confirmation of this invention. It is a flowchart of one Example of the time acquisition and transmission process of the portable terminal of this invention. It is a flowchart of one Example of the time acquisition and setting process of the accessory terminal of this invention. In the accessory terminal of this invention, it is a flowchart of one Example of the time acquisition process which considered the reliability ranking. In the accessory terminal of this invention, it is a communication sequence of one Example which does not change the present time. In the accessory terminal of this invention, it is a communication sequence of one Example in the case of setting-changing the present time.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, this invention is not limited by description of the following examples.
<Configuration of time setting system>
FIG. 1 is a block diagram showing the configuration of an embodiment of the time setting system according to the present invention.
In FIG. 1, the time setting system of the present invention mainly includes a mobile terminal 1, an accessory terminal 2, and a time providing unit 3.
The mobile terminal 1 corresponds to the information terminal described above, and is a small and lightweight communication terminal having portability such as a mobile phone, a smart phone, a PAD terminal, and a notebook PC, for example, acquisition, storage, display and generation of information, etc. It is a terminal having the function. However, it may be an information processing apparatus such as a personal computer that is not carried around. In addition, it is a terminal capable of short-range wireless communication with an accessory terminal and other portable terminals.
Furthermore, the portable terminal (hereinafter abbreviated as KTE) 1 receives time data td01 from the time providing unit 3 such as a time server, sets the current time t01 based on the received time data, and measures the current time t01. And has a function of displaying.

The accessory terminal 2 corresponds to the above-described communication terminal, is a portable and small and lightweight communication terminal, is smaller than the portable terminal (KTE) 1 and is a terminal that can be attached to a user's body, Also called a wearable terminal.
For example, it is a terminal of a size that can be wound around an arm like a wristwatch or attached to a pocket of an outer jacket with a clip.

The accessory terminal (hereinafter abbreviated as ATE) 2 has a function of communicating with the portable terminal KTE1, and further has a function of acquiring time data td02 from a time server or the like, measuring the current time t02, and displaying it. Shall have.
The communication with the portable terminal KTE1 is preferably performed by wireless communication using a wireless signal, and preferably has a short-range wireless communication function such as Bluetooth or Wifi-Direct.
Here, short-range wireless communication means communication in which data communication is established when the distance between the mobile terminal KTE and the communication terminal ATE is within a predetermined communicable distance.
For example, the accessory terminal ATE2 transmits a time data request signal to the mobile terminal KTE1 via Bluetooth and receives the time data td3 from the mobile terminal KTE1.

The time providing unit 3 is equipment or a device that provides time information. For example, the standard radio wave transmission station 3 a, the time server 3 b, and the user input 3 c correspond to the time providing unit 3.
Here, for the purpose of explanation, the user input 3c is illustrated separately from KTE and ATE. However, the user himself / herself corresponds to the current time by using an input function provided in KTE or ATE. This means inputting the time data.
The standard radio wave transmitting station 3a is a facility that transmits standard radio waves including time data received by a so-called radio timepiece. By receiving radio waves transmitted from the standard radio wave transmitting station 3a, data corresponding to the current time is generated, The current time can be set.
Since the time data included in the radio wave transmitted from the standard radio wave transmitting station 3a is the standard time of the country or region, when the current time is set using this radio wave, the current time set by another time providing unit is set. A time with higher reliability than the time is set.

The time server 3b is a device that transmits time data held by the time server 3b to the mobile terminal KTE or the communication terminal ATE via a predetermined communication network. Exists.
For example, when the communication terminal is a mobile phone, there is a time server that is arranged in a network (referred to as a mobile phone network) that provides various information to the mobile phone and transmits time data to a mobile phone that can be connected to the network.
There is also a time server that is connected to a WAN such as the Internet and transmits time data to various information devices connected to the WAN via the WAN.
Alternatively, there is a time server that is connected to a LAN and provides time data only to an information device connected to the LAN.

The time providing unit 3 of the present invention includes at least one of the standard radio wave transmitting station 3a and the time server 3b.
In the reliability table 45 described later, it is assumed that the reliability ranks of the standard radio wave transmission station 3a and the time server 3b are set in advance.

As described above, there are various types of time providing unit 3, and it is possible to set almost correct current time by using the provided time data, but strictly speaking, the reliability of the provided time data is different. .
For example, the current time when the radio wave transmitted from the standard radio wave transmitting station 3a is directly received and set is the most reliable. Next, the time data transmitted from the time server connected to the cellular phone network is obtained. It can be said that the reliability when the current time is set by using is high, and the reliability of the current time manually input by the user himself is the lowest.
In the present invention, as will be described later, in the accessory terminal ATE2, it is determined whether or not the current time can be reset using a reliability table that defines a predetermined high reliability, and the current time is set. It is characterized by.

As shown in FIG. 1, both the mobile terminal KTE1 and the accessory terminal ATE2 acquire time data (td01, td02) provided from the time providing unit 3, and based on the acquired time data, A time setting function for setting the time (t01, t02) is assumed.
The mobile terminal KTE1 has a time notification function for transmitting time data (td03) including the current time t01 set in the mobile terminal KTE1 to the accessory terminal ATE2 in response to a request from the accessory terminal ATE2. And
Further, the accessory terminal ATE2 receives the time data td03 notified from the portable terminal KTE1, and the reliability of the acquisition destination of the received time data td03 and the time data td02 provided from the time providing unit 3 And a function for setting the current time.

1 shows an embodiment in which time data is transmitted unidirectionally from KTE1 to ATE2 between KTE1 and ATE2. However, the present invention is not limited to this.
Since the ATE 2 also has a function of receiving the time data td02 provided from the time providing unit 3, the time data including the current time t02 set in the ATE 2 and the acquisition destination of the time used for setting the current time td04 may be transmitted to KTE1.

Further, when there are a plurality of KTE1 and ATE2 capable of receiving the time data provided from the time providing unit 3, short-range wireless communication is performed between the plurality of KTE1 and ATE2, and each other, Time data including the current time of itself and the acquisition destination of the time used for setting the current time may be transmitted and received.
In addition, when there are a plurality of time data received from other KTEs or the time providing unit 3, the acquisition destination of the time when the current time of the KTE or the ATE is set and the acquisition destination of each of the received time data And the time acquired from the acquisition source having the highest reliability rank may be set as the current time.

<Configuration of mobile terminal KTE>
FIG. 2 shows a configuration block diagram of an embodiment of the portable terminal KTE of the present invention.
In FIG. 2, the portable terminal 1 (KTE) mainly includes a control unit 11, a communication unit 12, a time measuring unit 13, a time acquisition unit 14, a time setting unit 15, a time notification unit 16, a display unit 17, an input unit 18, and a storage. Part 20.
The control unit 11 is a part that executes each function of the portable terminal KTE of the present invention, and is mainly realized by a microcomputer including a CPU, a ROM, a RAM, an I / O controller, a timer, and the like. Further, the function of the portable terminal KTE of the present invention is realized by causing the CPU to organically operate various hardware based on the control program stored in the ROM or the like.

The communication unit 12 is a part that performs data communication with an external device, for example, a part that communicates with an accessory terminal ATE or a time server. In particular, in the present invention, it is preferable that time data can be received from a plurality of time providing units 3.
Although the communication form of the communication unit 12 is not uniquely determined, it is preferable that the mobile terminal KTE has a configuration for performing wireless communication in order to have portability. Any wireless communication standard or protocol that is currently used may be used, and is not particularly limited. When the portable terminal KTE and the accessory terminal ATE are simultaneously carried and used, it is preferable that the communication between the KTE and the ATE is performed by short-range wireless communication (Bluetooth, Wifi-Direct).

The timekeeping unit 13 is a part that measures the current time t01 using a built-in timer, and is a part that generates time such as day, hour, minute, and second by a so-called clock function.
The time acquisition unit 14 is a part that acquires the contents of the received time data td01 from the time providing unit 3 outside the KTE1.
That is, a time 23 (hereinafter referred to as an acquisition time) included in the received time data and an acquisition destination information 24 (hereinafter also simply referred to as an acquisition destination) for identifying a time providing unit that has transmitted the time are acquired. Part.
As will be described later, the acquired time 23 and information of the acquisition source 24 are stored in the storage unit 20 as the acquisition information 22.
The time setting unit 15 is a part for setting the acquired time 23 to the current time. For example, the value of the current time t01 measured by the time measuring unit 13 is obtained as the acquisition time 23 included in the acquired time data td01. This is the part to change the setting.

The time notification unit 16 is a part that transmits the generated transmission time data td03 to the accessory terminal ATE2. This transmission time data td03 is transmitted to ATE2 by short-range wireless communication.
The transmission time data td03, as will be described later, is acquisition destination information for identifying the time provider 3 that has transmitted the current time t01 set in the KTE and the acquisition time 23 set in the current time, that is, the current time This data includes the acquisition source 24 that acquired t01.

The display unit 17 is a part for displaying various information used in the KTE, and an LCD, an organic EL display, or the like is used. The current time t01 is also displayed on the display unit 17 as necessary.
The input unit 18 is a part where a user performs information input and selection input operations such as setting items, and a keyboard, a mouse, a touch panel, or the like is used.
In the case of a touch panel, the display unit 17 and the input unit 18 are overlapped and formed integrally.

The storage unit 20 is a part that stores information used when executing each function of KTE, a program, and the like, a semiconductor storage element such as a ROM, a RAM, a flash memory, a storage device such as an HDD, an SSD, and the like These storage media are used.
The storage unit 20 stores, for example, a current time 21 (t01), acquisition information 22, transmission time data 25 (td03), and the like.
The current time 21 (t01) is the current time measured by the timer unit 13. However, the current time 21 may be stored in the storage unit 20, but may be stored as one piece of information in a timer included in the control unit 11.

The acquisition information 22 is a part storing time data transmitted from the time providing unit 3, and includes an acquisition time 23 and an acquisition destination 24.
The acquisition time 23 is information related to the time generated by the time providing unit 3 and is the time set to the current time 21.
For example, the time specified by the radio wave transmitted from the standard radio wave transmission station 3a is the acquisition time. The acquisition time 23 is composed of data including year, month, day, hour, minute, and second, for example.

The acquisition destination 24 is information for identifying the other party that has transmitted the time data including the acquisition time 23, and is an acquisition for identifying the time providing unit 3 that has transmitted the acquisition time 23 used when setting the current time 21. It is the destination information.
As the acquisition source 24, for example, information for identifying the standard radio wave transmission station 3a, the time server 3b, the user input 3c, and the like is stored.

The transmission time data 25 (td03) is time data to be transmitted to the accessory terminal ATE, and at least the current time 21 (t01) set in the KTE and the acquisition time 23 based on the current time t01 are acquired. Acquisition destination 24.
The transmission time data 25 is generated, for example, when a request signal from the accessory terminal ATE2 is received, and is transmitted to the ATE2 by the time notification unit 16.
In the present invention, when the mobile terminal KTE acquires time data td01 from any of the time providing stations 3, the mobile terminal KTE changes the current time t01 to the acquisition time 23 included in the acquired time data td01. It is assumed that the acquisition source 24 included in the data td01 is stored in the storage unit 20.

<Configuration of accessory terminal ATE>
FIG. 3 shows a configuration block diagram of an embodiment of the accessory terminal ATE of the present invention.
In FIG. 3, the accessory terminal 2 (ATE) mainly includes a control unit 31, a communication unit 32, a time measurement unit 33, a time acquisition unit 34, a time setting unit 35, a reliability comparison unit 36, a display unit 37, an input unit 38, and And a storage unit 40.
Here, the control part 31, the communication part 32, the time measuring part 33, the time acquisition part 34, the time setting part 35, the display part 37, and the input part 38 are the same as each functional block of the same name with which the portable terminal KTE was equipped. It has a function.

The communication unit 32 receives radio waves from the standard radio wave transmission station 3a of the time providing unit 3, receives time data (td02) from the time server 3b, and receives time data td03 from the mobile terminal KTE.
Since the ATE is a smaller and lighter terminal than the KTE, the display unit 37 and the input unit 38 are optional components, and the display unit 37 and the input unit 38 may not be provided.

The reliability comparison unit 36 stores the reliability ranking of the acquisition destination 44 at the current time t02 stored in the storage unit 40 and the reliability of the acquisition destination 46-2 included in the transmission time data 46 (td03) transmitted from the KTE1. This is the part that compares sex rank.
For the comparison of reliability, a reliability table 45 stored in advance in the storage unit 40 is used.
That is, the first reliability ranking of the acquisition destination information included in the time data acquired from KTE1 and the second reliability ranking of the supplier information stored in the storage unit 40 are read from the reliability table 45. , Comparing the first and second reliability rankings.

As will be described later, the reliability table 45 stores the time acquisition destination name and the reliability ranking (J) of the acquisition destination.
The reliability comparison unit 36 refers to the reliability table 45, confirms the reliability ranks of the two acquisition sources (44, 46-2), and compares the reliability ranks (J) of both, which will be described later. As described above, whether or not the setting of the current time t02 can be changed is determined based on the reliability rankings of the two acquisition destinations.

For example, when the first reliability ranking is higher than the second reliability ranking or the same as the second reliability ranking as a result of the comparison by the reliability comparison section 36, the time setting section 35 The time acquired from KTE1 is set to the current time 41 (t02).
On the other hand, when the first reliability ranking is lower than the second reliability ranking as a result of the comparison by the reliability comparison unit 36, the time setting unit 35 does not change the current time.
However, if the reliability ranks of the two acquisition destinations are the same, the time error can be corrected by changing the current time to the time acquired from KTE 1 as described above, but the current time is not changed. It may be.

Similar to the KTE storage unit 20, the storage unit 40 stores a current time 41 and acquired information 42.
The storage unit 40 also stores a reliability table 45 and transmission time data 46 transmitted from the KTE.
The transmission time data 46 includes an acquisition time 46-1 and an acquisition destination 46-2.

As described above, the reliability table 45 is set in advance with a reliability rank indicating the reliability of time data provided from the time providing unit 3 that provides time.
FIG. 4 is an explanatory diagram of an example of the reliability table 45.
The reliability table 45 includes a reliability ranking (J) and a time acquisition destination name.
Here, the reliability ranking (J) indicates the level of reliability of the time data acquisition destination, and J1 has the highest reliability and J5 has the lowest reliability.

In the embodiment of FIG. 4, the reliability (J1) of the standard radio wave transmission station is the highest, and then the reliability (J2) of the cellular phone network time server is high, and the reliability of the time data set by the user input. This indicates that the sex (J4) is the lowest.
In addition, the reliability when the time data is not set is set as the reliability (J5) lower than the user input, but when the time data is not set, any one of the top four reliability ranks is set. When the time is acquired from the acquisition destination, the current time is set to the acquired time.

  The reliability table 45 may be fixedly set as an initial setting value in advance, but the user may be able to change the setting as necessary. Further, the time acquisition destination of the reliability table 45 is not limited to the one shown in FIG. 4, and the time acquisition destination may be added or deleted, and the reliability order may be changed. Good.

<Time acquisition process>
FIG. 5 shows a flowchart of an embodiment of time acquisition processing performed in the portable terminal KTE and the accessory terminal ATE of the present invention. This time acquisition process is similarly executed in KTE1 and ATE2.

  In step S1, the time acquisition unit (14, 34) confirms whether or not the time data transmitted from the time providing unit 3 has been acquired. Alternatively, it is confirmed whether or not the time is set and input by the user. A flowchart of an embodiment of this time acquisition confirmation process is shown in FIG.

  In step S2, when time data is acquired, it progresses to step S3, and when it is not acquired, it returns to step S1. Here, the acquired time data includes the acquisition time and the acquisition destination information as described above.

In step S3, the time setting unit (15, 35) stores the acquisition time (23, 43) in the storage unit (20, 40) among the acquired time data.
In step S4, the time setting unit (15, 35) stores the acquisition source (24, 44) in the storage unit (20, 40) among the acquired time data.

In step S5, the time setting unit (15, 35) sets the acquisition time (23, 43) of the acquired time data to the current time (t01, t02).
With the above processing, the current time of KTE1 and ATE2 is newly set by the time data provided from the time providing unit 3.

In the time acquisition process shown in FIG. 5, since the reliability ranking is not taken into consideration, when the time data is newly acquired, the current time is always reset by the new acquisition time.
Therefore, even if the current time is set by a standard radio wave transmitted from a highly reliable standard radio broadcast station, for example, if the user sets the current time by his / her own input, The time is set by user input with low probability.

  In the time acquisition process in ATE2, when setting the current time for the time data transmitted from the time providing unit 3 in consideration of the reliability ranking, it is confirmed that the time data from the time providing unit 3 has been acquired. After that, steps S3, S4, and S5 are not executed immediately, but the reliability of the received time data acquisition destination and the current time acquisition destination is compared to obtain the newly acquired time data. Steps S3 to S5 may be executed when the previous reliability is higher.

FIG. 9 shows a flowchart of an embodiment of the time acquisition process in consideration of the reliability ranking in the accessory terminal ATE.
9 is different from the flowchart of FIG. 5 in that steps S6 and S7 are added, and the same steps as those in FIG.

In step S2, when new time data is acquired from the time providing unit 3, the process proceeds to step S6.
In step S <b> 6, the reliability comparison unit 36 of the ATE uses the reliability table 45 to determine the reliability ranking (J of the acquisition destination included in the acquired time data and the acquisition destination 44 stored in the storage unit 40. ).

In step S7, if the comparison result shows that the reliability of the acquired time data acquisition destination is lower than the stored acquisition destination 44, the processing is terminated.
On the other hand, if the reliability of the acquisition destination of the acquired time data is higher or the same as the acquisition destination 44, the process proceeds to step S3.

When the process proceeds to step S3, the newly acquired time is set as the current time as described in the flowchart of FIG.
On the other hand, when the reliability of the acquisition destination of the newly acquired time data is lower than the acquisition destination when the current time is set, the current time is maintained as it is, and the process ends.
According to this, the current time of ATE2 is always set based on time data acquired from a highly reliable acquisition source.

<Time acquisition confirmation process>
FIG. 6 shows a flowchart of an embodiment of the time acquisition confirmation process of the present invention.
This flowchart shows an example of detailed contents of step S1 shown in FIG.

In step S11, it is checked whether the time providing unit 3 has received the standard radio wave transmitted from the standard radio broadcast station 3a. If the standard radio wave is received for a predetermined time or longer and the radio signal is analyzed to extract predetermined time data, the process proceeds to step S12.
On the other hand, if the standard radio wave cannot be received and the time data cannot be extracted, the process proceeds to step 13.

In step S12, time data extracted from the standard radio wave is received, 1 is set in the reception flag RV, and the process ends. Here, the reception flag RV is a flag for identifying the acquisition source of the received time data.
For example, when the acquisition source of the received time data is the standard radio wave transmission station 3a, the reception flag is set to RV = 1.
Further, when the acquisition destination is a time server, RV = 2 is set, and when it is based on user input, RV = 4 is set.
Furthermore, when reception of time data cannot be confirmed, RV = 0 is set.

This reception flag RV can be used for the determination process in step S2 of FIG.
In step S2, if RV = 0, it is determined that the time data could not be acquired, and the process returns to step S1.
In step S2, if RV ≠ 0, it is determined that time data has been acquired, and the process proceeds to step S3.

In step S13, it is checked whether or not the time data transmitted from the time server has been received. If received, the process proceeds to step S14, and if not, the process proceeds to step S15.
In step S14, time data is received, a reception flag RV is set to 2, and the process ends.
In step S15, it is checked whether or not the user has input a time using the input unit. If there is an input, the process proceeds to step S16, and if not, the process proceeds to step S17.
In step S16, time data is input, 4 is set in the reception flag RV, and the process ends.
In step S17, since the time has not been acquired, zero is set in the reception flag RV.
When a time server or other time providing device that provides time data is added, a step for checking reception of time data may be added and a new reception flag may be defined.

<Time acquisition transmission processing of portable terminal>
FIG. 7 shows a flowchart of an embodiment of time acquisition and time transmission processing in the portable terminal KTE.
In step S21, the time acquisition unit 14 of the KTE checks whether or not the time data provided from each of the time providing units 3 has been acquired, and performs a time acquisition process for setting the current time. Here, for example, a time acquisition process as shown in FIG. 5 is executed.
In step S <b> 22, the control unit 11 checks whether a time data request from the ATE 2 is received via the communication unit 12.
The time data request is data for requesting that ATE2 transmit data of the current time of KTE1 to KTE1.

If the time data request is received, the process proceeds to step S23, and if not, the process returns to step S21.
In step S23, the time notification unit 16 reads the current time t01 and the acquisition source 24 from the storage unit 20, and generates transmission time data td03. That is, transmission time data 25 (td03) including the current time t01 and the information of the acquisition source 24 indicating the time providing unit 3 that has transmitted the time when the current time is set is generated.
In step S24, the generated transmission time data td03 is transmitted to ATE2. Then, it returns to step S21.
Thereby, in response to the request from ATE2, the current time of KTE1 and the acquisition destination of the current time are transmitted to ATE2.

<Access terminal time acquisition setting process>
FIG. 8 shows a flowchart of an embodiment of time acquisition and time setting processing in the accessory terminal ATE.
In step S31, the time acquisition unit 34 of the ATE checks whether or not the time data provided from each of the time providing units 3 has been acquired, and performs a time acquisition process for setting the current time. Here, for example, a time acquisition process as shown in FIG. 5 is executed.

In step S <b> 32, the control unit 31 checks whether there is a time data acquisition request input by the user using the input unit 38.
Alternatively, when the ATE 2 does not have the input unit 38, the time data acquisition request is automatically made at regular intervals, immediately after the power is turned on, or during the link establishment procedure with the KTE 1. You may do it.
If there is this acquisition request, the process proceeds to step S33, and if not, the process returns to step S31.

In step S33, there is a time data acquisition request, so the time acquisition unit 34 generates a time data request.
The time data request may include at least a request to transmit time data to the KTE 1 and data specifying the ATE itself.
In step S34, the time acquisition unit 34 transmits the generated time data request to the KTE1. The KTE 1 that has received this time data request transmits the transmission time data to the ATE 2 as described above.
In step S35, it is checked whether or not transmission time data is received from KTE1 as a reply to the time data request. If not received, step S35 is looped. If received, the process proceeds to step S36.

In step S36, the acquisition source (st1) is read out from the received transmission time data.
In step S37, the acquisition source (st2) 44 of the acquisition information 42 stored in the storage unit 40 of ATE2 is read.
In step S38, using the reliability table 45, the reliability ranks (J) of the two read sources (st1, st2) are acquired, and the reliability ranks (J) of the two are compared.
In step S39, if the reliability rank of the acquisition destination (st2) 44 of the storage unit is lower than or the same as the reliability rank of the acquisition destination (st1) of the received time data, the process proceeds to step S40, and the acquisition destination If the reliability rank of (st2) 44 is higher than the reliability rank of the received acquisition destination (st1), the process returns to step S31.

In the case of proceeding to step S40, the current time currently measured in ATE2 is lower than the time data newly received from KTE1 or acquired from an acquisition source having the same reliability. It is preferable to rewrite the time.
On the other hand, if not, since the acquisition destination st2 of the current time of the ATE is more reliable than the acquisition destination st1 of the time data received from KTE1, the acquisition is performed from the acquisition source st1 with low reliability. Since it is not preferable to rewrite the current time as the time, the setting of the current time is not changed.

In step S40, the time included in the time data received from KTE1 is set to the current time t02 of ATE2, and further stored in acquisition time 43 of storage unit 40.
In step S41, the acquisition source st1 included in the time data received from KTE1 is set and stored in the acquisition source 44 (st2) of the storage unit 40. Then, it returns to step S31.

  As described above, when the current time of ATE2 is acquired from an acquisition source with low reliability, the time data received from KTE1 is acquired from an acquisition source with higher reliability. The current time of ATE2 is reset to the time acquired from the reliable acquisition source.

In addition, if the current time A of ATE2 is acquired from a highly reliable acquisition destination, the current time B included in the transmission time data received from KTE1 is acquired from an acquisition destination with lower reliability. If the current time A of the ATE2 has been changed, the current time A of the ATE2 is not rewritten to the time acquired from the acquisition source with low reliability, and is maintained in a highly reliable state.
Therefore, when synchronizing the current time between KTE1 and ATE2, even if the current time acquisition source is different, the current time of ATE2 is maintained and set to the time acquired from a reliable acquisition source, It is possible to prevent the setting from being changed at the time acquired from an acquisition source with low reliability.

In the above embodiment, if the reliability ranks of the two acquisition sources (st1, st2) are the same, the process proceeds to step S40, and the current time of ATE2 is received from KTE1. The setting is changed to the time included in the transmission time data.
In this way, when the reliability ranking is the same, by rewriting the current time t02 of the ATE2 with the time acquired from the KTE1, the current of the ATE2 having a slight error that occurs with the passage of time when the setting is not changed for a long time. Time t02 can be corrected.
In other words, depending on the accuracy of the built-in clock from which the time is counted, an error will occur little by little over the current time as time elapses, but as described above, even when the reliability ranking is the same, By rewriting the current time, the error of the current time as described above can be corrected.

Also, in ATE2, once the time data is received from the time providing unit having the highest reliability ranking, and the time data is received from the acquisition source having the lowest reliability ranking, the current time setting is not changed. That is, the subsequent setting change of the current time is performed only when the time data is received from the acquisition source with the highest reliability ranking, and the subsequent setting change of the current time may not be performed.
Thus, in order to prevent the current time setting from being changed, the following processing may be performed, for example.

In step S40, after changing the setting of the current time, a predetermined timer T is set and a predetermined time is counted. For example, 10 days is set as the timer value of the timer T, and it is checked that this timer value has elapsed. When this timer value elapses, the reliability rank of the reliability table corresponding to the acquisition source information of the current time stored in the storage unit is temporarily lowered by one rank.
Further, when a predetermined time of the timer T has elapsed, the reliability rank is further lowered by one rank, and this process is repeated until the lowest reliability rank is reached. However, if the current time is changed before the predetermined time has elapsed, the reliability rank of the reliability table is returned to the initial value.

  As described above, when the reliability ranking of the acquisition source information is lowered one by one with the passage of time, the time setting is changed when the time data that is not the highest reliability ranking is transmitted from KTE1. Therefore, it is possible to prevent the current time from being changed.

Further, in the above embodiment, for ease of explanation, the case where the current time of ATE2 is set based on the transmission time data transmitted from KTE1, but conversely, the current time of ATE2 and the acquisition destination is described. May be transmitted to KTE1, and the current time of KTE1 may be set based on this time data td04.
In this case, KTE1 also includes a reliability table as shown in FIG. 4, and ATE2 includes a time notification unit.
Thereby, when synchronizing the present time of KTE1 and ATE2, the present time of KTE1 and ATE2 can be set to the time acquired from the more reliable acquisition destination.

<Example in which the current time is not changed>
FIG. 10 shows a communication sequence of an embodiment in which the current time is not changed in the accessory terminal.
FIG. 10 shows a communication sequence performed between KTE1 and ATE2. This communication is performed by short-range wireless communication as described above.
Here, it is assumed that the current time t01 is already set in KTE1, the acquisition destination of the current time t01 is st1, and the reliability ranking of the acquisition destination is J2.
In ATE2, it is assumed that the current time t02 is already set, the acquisition destination of the current time t02 is st2, and the reliability ranking of the acquisition destination is J1.
Further, it is assumed that J1 is set higher in the reliability table 45 than J2 with respect to the levels of the two reliability orders (J1, J2).

Assume that a time data request is transmitted from ATE2 to KTE1 when the current time is set as described above (step S34 in FIG. 8).
In KTE1, the time data request from ATE2 is received (step S22 in FIG. 7).
Further, in KTE1, transmission time data td03 including its current time t01 and customer st1 is generated, and transmission time data td03 is transmitted to ATE2 (steps S23 and S24 in FIG. 7).
In ATE2, the transmission time data td03 from KTE1 is received (step S35 in FIG. 8).
Next, in ATE2, the reliability rank (J2) of the acquisition destination st1 included in the transmission time data td03 is compared with the reliability rank (J1) of the acquisition destination st2 stored in the ATE2 (step in FIG. 8). S38).

As described above, if the reliability rank J1 is higher than the reliability rank J2 (J1> J2), the reliability rank (J1) of the acquisition source st2 at the current time t02 of ATE1 is more reliable. Since the rank is high, the current time t02 is maintained as it is and is not changed (step S39 in FIG. 8).
In this way, even if a less reliable time is transmitted from KTE1 in ATE2, the current time t02 is prevented from being changed by the less reliable time.

<Example of changing the current time>
FIG. 11 shows a communication sequence of an embodiment for changing the setting of the current time in the accessory terminal.
FIG. 11 also shows a communication sequence performed between KTE1 and ATE2, as in FIG. 10. Current times t01 and t02 of KTE1 and ATE2 are already set, and the acquisition destination of the current time is Let st1 and st2.
However, unlike FIG. 10, the reliability ranking of the acquisition destination st1 of the current time t01 of KTE1 is J1, and the reliability ranking of the acquisition destination st2 of the current time t02 of ATE2 is J2.
Here, it is assumed that the reliability rank J1 is higher than the reliability rank J2 (J1> J2).

In FIG. 11, the sequence from the transmission of the time data request in the first half to the comparison of the reliability ranking is the same as that in FIG.
In FIG. 11, since J1> J2 in the comparison of the reliability rank, the reliability rank (J1) of the acquisition destination st1 of the current time t01 transmitted from KTE1 is the acquisition destination of the current time t02 of ATE2. It is higher than the reliability ranking (J2) of st2.
Therefore, steps S40 and S41 are executed based on the determination in step S39 of FIG.
That is, since the current time t01 determined to be more reliable than the current time t02 in ATE2 is received from KTE1, the current time t02 is changed to the received current time t01 (step S40 in FIG. 8). .
Further, the setting of the acquisition source of ATE2 is changed to the received acquisition source st1 (step S41 in FIG. 8).
As described above, when a more reliable time t01 is transmitted from the KTE1, the current time t02 of the ATE2 is changed to the highly reliable time t01.

1 Mobile terminal (KTE)
2 Accessory terminal (ATE)
3 Time providing unit 3a Standard radio wave transmission station 3b Time server 3c User input 11 Control unit 12 Communication unit 13 Timekeeping unit 14 Time acquisition unit 15 Time setting unit 16 Time notification unit 17 Display unit 18 Input unit 20 Storage unit 21 Current time ( t01)
22 Acquisition information 23 Acquisition time 24 Acquisition destination 25 Transmission time data (td03)
31 Control Unit 32 Communication Unit 33 Timekeeping Unit 34 Time Acquisition Unit 35 Time Setting Unit 36 Reliability Comparison Unit 37 Display Unit 38 Input Unit 40 Storage Unit 41 Current Time (t02)
42 Acquisition information 43 Acquisition time 44 Acquisition destination 45 Reliability table 46 Received transmission time data 46-1 Acquisition time 46-2 Acquisition destination

Claims (8)

A timekeeping section that measures the current time,
A communication unit that receives time data from a predetermined information terminal and a time providing unit that provides time;
A time acquisition unit for acquiring a time included in the received time data and an acquisition destination information for identifying a time providing unit that has transmitted the time;
A time setting unit for setting the acquired time to the current time;
A memory storing a reliability table in which a reliability ranking indicating the reliability of the time providing unit providing the time is set in advance, an acquisition time set to the current time, and acquisition destination information of the acquisition time And
The first reliability ranking of the acquisition destination information included in the time data acquired from the information terminal and the second reliability ranking of the acquisition destination information stored in the storage unit are read from the reliability table, A reliability comparison unit that compares the first and second reliability rankings;
As a result of the comparison, when the first reliability ranking is higher than the second reliability ranking, or when the first reliability ranking is the same as the second reliability ranking, the time set by the time setting unit acquired from the information terminal is A communication terminal that is set to a time. As a result of the comparison by the reliability comparison unit, when the first reliability rank is lower than the second reliability rank,
The communication terminal according to claim 1, wherein the time setting unit does not change the current time. The time providing unit includes at least one of a standard radio wave transmitting station that transmits a standard radio wave including time data, and a time server that transmits time data via a predetermined communication network,
The communication terminal according to claim 1 or 2, wherein a reliability ranking of the standard radio wave transmission station and a time server is set in the reliability table. Communication with the information terminal performed by the communication unit,
The communication terminal according to any one of claims 1 to 3, wherein the communication terminal is performed by short-range wireless communication that is established when a distance from the information terminal is within a predetermined communicable distance. The information terminal is a portable terminal having portability capable of short-range wireless communication,
Set the current time based on the time data received from the time providing unit,
5. The transmission time data including a set current time and acquisition destination information for identifying a time providing unit that has transmitted the current time is transmitted by short-range wireless communication. A communication terminal according to the above.   After the time setting unit sets the time acquired from the information terminal as the current time, and after a predetermined time has elapsed, the reliability of the reliability table corresponding to the acquisition destination information stored in the storage unit The communication terminal according to claim 1, wherein the rank is lowered. A time setting system comprising: an information terminal; a communication terminal that performs near field communication with the information terminal; and a time providing unit that provides time to the information terminal and the communication terminal,
The communication terminal is
A first timekeeping section that measures the current time;
A first communication unit that receives time data from the information terminal and the time providing unit;
A first time acquisition unit that acquires a time included in the received time data and an acquisition destination information that identifies a time providing unit that has transmitted the time;
A first time setting unit for setting the acquired time as a current time;
A reliability table in which a reliability ranking indicating the reliability of the time providing unit providing the time is set in advance, an acquisition time set as the current time, and acquisition destination information of the acquisition time are stored. 1 storage unit,
The first reliability ranking of the acquisition destination information included in the time data acquired from the information terminal and the second reliability ranking of the acquisition destination information stored in the first storage unit are read from the reliability table. A reliability comparison unit for comparing the first and second reliability rankings,
The information terminal is
A second timekeeping section that measures the current time;
A second communication unit that receives time data from the time providing unit;
A second time acquisition unit that acquires a time included in the received time data and an acquisition destination information that identifies a time providing unit that has transmitted the time;
A second time setting unit for setting the acquired time to the current time;
A second storage unit storing the acquisition time set to the current time and the acquisition destination information of the acquisition time;
A time notification unit that transmits transmission time data including the set current time and acquisition destination information that identifies a time providing unit that has transmitted the acquisition time set to the current time to the communication terminal. ,
The result of comparing the first reliability rank of the supplier information included in the transmission time data transmitted from the time notification section of the information terminal and the second reliability rank by the reliability comparison section of the communication terminal ,
When the first reliability ranking is higher than the second reliability ranking or the same as the second reliability ranking, the first time setting unit sets the current time included in the transmission time data as the communication time. Set it to the current time on your device,
The time setting system, wherein the current time of the communication terminal is not changed when the first reliability rank is lower than the second reliability rank. A plurality of communication terminals that perform short-range wireless communication with each other;
A time setting system comprising a plurality of time providing units for providing time to the communication terminal,
Each of the communication terminals, a time measuring unit for measuring the current time,
A communication unit that receives time data from another communication terminal and the time providing unit;
A time acquisition unit that acquires a time included in the received time data and an acquisition destination information that identifies a time providing unit that has transmitted the time;
A time setting unit for setting the acquired time to the current time;
A reliability table in which a reliability ranking indicating the reliability of the time providing unit is set in advance, an acquisition time set as the current time, and a storage unit that stores acquisition destination information of the acquisition time;
The first reliability ranking of the acquisition destination information included in the time data acquired from the other communication terminal and the second reliability ranking of the acquisition destination information stored in the storage unit are read from the reliability table. A reliability comparison unit for comparing the first and second reliability rankings;
Transmission time data including the current time set by the time setting unit and the acquisition destination information identifying the time providing unit that has transmitted the acquisition time set to the current time is transmitted to the other communication terminal. A time notification unit,
The reliability comparison unit of the arbitrary communication terminal A compares the first and second reliability ranks. As a result, the first reliability rank is higher than the second reliability rank, or the second reliability rank If they are the same, the time setting unit sets the current time B included in the transmission time data transmitted from the other communication terminal B to the current time A of the communication terminal A,
The time setting system, wherein the current time A of the communication terminal A is not changed when the first reliability rank is lower than the second reliability rank.