Patent Description:
For example, <CIT> discloses a sample measurement device including a measurement unit that performs measurement regarding a specific component contained in a sample, a measurement data storage unit that stores measurement data obtained by the measurement unit, a display unit that displays the measurement data, a sensor piece detection unit that detects insertion and removal of a sensor piece to which the sample is applied, and a first data transmission/reception unit that transmits the measurement data via wireless communication, in which the first data transmission/reception unit performs first authentication processing for wireless communication after insertion of the sensor piece is detected by the sensor piece detection unit, in a case in which the first data transmission/reception unit detects presence of plural communication devices that are targets of wireless connection, the display unit performs specifying and displaying of the plural communication devices as possible connection targets periodically one-by-one, and the first data transmission/reception unit performs the first authentication processing on one of the plural communication devices for which the specifying and displaying is performed in a case in which there is change in a detection state by the sensor piece detection unit among the plural communication devices.

For example, <CIT> discloses a sample measurement device including a measurement unit that performs measurement regarding a specific component contained in a sample, a measurement condition determination unit that determines whether or not one or more measurement conditions necessary for the measurement are appropriate and generates measurement condition data including a determination result of whether or not this measurement condition is appropriate, a data transmission unit that transmits the measurement condition data via wireless communication, and a sensor piece detection unit that performs measurement of the sample in a state where a sensor piece to which the sample is applied is inserted and detects insertion and removal of the sensor piece, in which a standby state in which the sample cannot be measured is changed to an operating state in which the sample can be measured by detection of insertion of the sensor piece by the sensor piece detection unit, and the measurement condition determination unit automatically determines whether or not the measurement conditions are appropriate after the sensor piece is inserted and before measurement is performed by the measurement unit, the data transmission unit automatically performs wireless communication establishment processing after the sensor piece is inserted and before the measurement condition data is transmitted, and automatically transmits the measurement condition data after the measurement condition determination unit determines whether or not the measurement conditions are appropriate and before the measurement unit performs measurement. <CIT> teaches embedded systems in medical monitoring systems. In particular, a medical sensor includes an application-specific integrated circuit (ASIC), medical hardware, and a communication module. The ASIC is communicatively coupled to the medical hardware and communication module. The ASIC is configured to receive measurement signals from the medical hardware and provide the measurement signals to the communication module. The communication module is configured to process the measurement signal into measurement results and transmit the measurement results to a remote device. The communication module includes an application layer for processing the measurement signals and a link layer for transmitting the measurement results. The ASIC is configured to detect that a voltage supplied to the ASIC is below a threshold level and determine an amount of time that the voltage has been below the threshold level. The ASIC is further configured to respond to the voltage supplied to the ASIC being below a threshold level based on the determined amount of time. In <CIT> a continuous glucose monitor for wirelessly transmitting data relating to glucose value to a plurality of displays is disclosed, as well as systems and methods for limiting the number of display devices that can connect to a continuous glucose transmitter. In addition, security, including hashing techniques and a changing application key, can be used to provide secure communications between the continuous glucose transmitter and the displays. Also provided is a continuous glucose monitor and techniques for authenticating multiple displays, providing secure data transmissions to multiple displays, and coordinating the interaction of commands and data updates between multiple displays. In <CIT> provided is a method for providing information, which relates to at least one medical device by using a mobile terminal. The method includes: acquiring link information which relates to a server which is connected to the at least one medical device by using a short-range communication; transmitting, to the server, a request for information which relates to the at least one medical device, based on the link information; receiving, from the server, the requested information which relates to the at least one medical device; and providing the received information.

Further preferred embodiments are defined by the dependent claims.

In recent years, there is a technology of transmitting a measurement result or the like collected by a measurement device (for example, smart watch or the like) to a communication terminal using Bluetooth low energy (BLE) communication and synchronizing data in the measurement device.

Meanwhile, in a case in which communication established once in the BLE communication is disconnected, the measurement device performs advertisement processing of periodically transmitting a connection request including information regarding the host device to the communication terminal. In the case of receiving the connection request by the advertisement processing, the communication terminal re-establishes communication between the communication terminal and the measurement device.

In such a situation, establishment and disconnection of the BLE communication are repeated every time the periodic advertisement processing is performed even in a case in which any particular data is not transmitted from the measurement device, and communication unintended by a user may be established.

In view of this, an aspect of the present disclosure is to provide a measurement device, a measurement system, and a measurement method capable of eliminating establishment of communication unintended by a user in a case in which a communication terminal and the measurement device perform BLE communication.

A measurement device according to an aspect of the disclosure includes a processor, in which the processor transmits advertisement information to a communication terminal in advertisement processing for establishing communication between a host device and the communication terminal, the advertisement information including state information indicating a state of the host device and bonding information indicating a presence or an absence of storage of an encryption key used for communication with the communication terminal, and in advertisement processing for re-establishing communication after the encryption key is shared between the host device and the communication terminal, the advertisement information
includes bonding information indicating stored of the encryption key and state information indicating a current state of the host device.

According to the disclosure, establishment of communication unintended by a user can be eliminated in a case in which a communication terminal and a measurement device perform BLE communication.

Exemplary embodiments of the present invention will be described in detail based on the following figures, wherein:.

The present disclosure will become more fully understood from the detailed description given hereinbelow. Further range of application of the present disclosure will become clearer from the detailed description given hereinbelow. However, the detailed description and the specific embodiment are illustrated of desired embodiments of the present disclosure and are described only for the purpose of explanation. Various changes and modifications will be apparent to those ordinary skilled in the art on the basis of the detailed description.

The applicant has no intention to give to public any disclosed embodiment. Among the disclosed changes and modifications, those which may not literally fall within the scope of the patent claims constitute, therefore, a part of the present invention in the sense of doctrine of equivalents.

Hereinafter, exemplary embodiments for carrying out the disclosure will be described in detail with reference to the drawings. <FIG> is a schematic view illustrating an example of a configuration of a measurement system <NUM> according to the present embodiment.

As illustrated in <FIG> as an example, the measurement system <NUM> includes a measurement device <NUM> and a communication terminal <NUM>. The measurement device <NUM> and the communication terminal <NUM> can be connected to each other via Bluetooth low energy (BLE) communication.

The measurement device <NUM> is a device that measures biological information of a user and transmits the biological information to the communication terminal. Here, the biological information is, for example, information indicating a blood glucose level, a blood oxygen concentration, a hemoglobin amount, a body temperature, a heartbeat, an electrocardiographic waveform, a blood pressure, or the like, and may be any biological information that can be measured from a human body. Hereinafter, a case in which the measurement device <NUM> is a blood glucose (BG) measurement device that measures a blood glucose level of a user will be specifically described as an example. For example, the measurement device <NUM> includes a sensor piece <NUM> for measuring a blood glucose level and an insertion port <NUM> into which the sensor piece <NUM> is inserted, and the sensor piece <NUM> may include a spotting unit <NUM> for being spotted with blood of a user. Here, the measurement device <NUM> may include a terminal (not illustrated) that is energized by the sensor piece <NUM> being inserted into the insertion port <NUM>.

In the measurement device <NUM>, the sensor piece <NUM> and the spotting unit <NUM> may be energized by the sensor piece <NUM> in which the spotting unit <NUM> is spotted with blood being inserted into the insertion port <NUM>, and the blood glucose level in the blood may be electrically measured. Note that "spotting" according to the present embodiment means causing blood of the user to be applied to (absorbed by) the spotting unit <NUM>.

The measurement device <NUM> can transmit a measurement result including a blood glucose level or the like measured via BLE communication to the communication terminal <NUM>. Here, the measurement device <NUM> can establish communication by executing advertisement processing for establishing communication between the host device and the communication terminal <NUM> and transmitting information regarding the host device (hereinafter referred to as "advertisement information") together with a connection request. Here, the advertisement processing is processing of establishing communication with the communication terminal <NUM> by transmitting advertisement information together with a connection request. In a case in which communication with the communication terminal <NUM> is established, the measurement device <NUM> can transmit a measurement result to the communication terminal <NUM>.

The advertisement information according to the present embodiment may be information including identification information, connection information, bonding information, and state information. Here, the identification information may be information for identifying the measurement device <NUM>, the connection information may be information for identifying the communication terminal <NUM> as a connection destination, the bonding information may be information indicating the presence or absence of storage (bonding) of an encryption key by the measurement device <NUM>, and the state information may be information indicating the state of the measurement device <NUM>.

The communication terminal <NUM> may be a mobile terminal capable of communicating with an external device, specifically, a terminal such as a tablet or a personal computer. The communication terminal <NUM> can perform wireless communication with the measurement device <NUM> via BLE communication. For example, in the case of receiving a connection request and advertisement information by advertisement processing from the measurement device <NUM>, the communication terminal <NUM> can establish communication by transmitting a connection response to the measurement device <NUM> according to the advertisement information. In a case in which the first communication is established, the communication terminal <NUM> can share (pair) an encryption key used in the case of communicating with the measurement device <NUM> with the measurement device <NUM> and store (bond) the encryption key.

In the case of storing the advertisement information received from the measurement device <NUM> in the first communication and re-establishing communication with the measurement device <NUM>, the communication terminal <NUM> can determine whether or not to re-establish the communication according to the advertisement information and re-establish the communication.

Next, a hardware configuration of the measurement device <NUM> will be described with reference to <FIG>.

As illustrated in <FIG> as an example, the measurement device <NUM> according to the present embodiment may include a central processing unit (CPU) <NUM>, a read only memory (ROM) <NUM>, a random access memory (RAM) <NUM>, a storage <NUM>, an input unit <NUM>, a monitor <NUM>, a communication interface (communication I/F) <NUM>, and a sensor <NUM>. Each of the CPU <NUM>, the ROM <NUM>, the RAM <NUM>, the storage <NUM>, the input unit <NUM>, the monitor <NUM>, the communication I/F <NUM>, and the sensor <NUM> may be connected to each other by a bus <NUM>.

The CPU <NUM> can integrally control the entire measurement device <NUM>. The ROM <NUM> may store various programs, data, and the like. The RAM <NUM> may be a memory used as a work area in a case in which various programs are executed. The CPU <NUM> can perform processing of establishing communication with the communication terminal <NUM> by deploying a program stored in the ROM <NUM> in the RAM <NUM> and executing the program.

The storage <NUM> can be configured by, for example, a hard disk drive (HDD), a solid state drive (SSD), a flash memory, or the like. Note that the storage <NUM> may store various programs and the like.

The input unit <NUM> may be a button that receives input, selection, and the like. The monitor <NUM> may be a display device or the like that displays characters and images. The communication I/F <NUM> may transmit and receive data using wireless communication conforming to the BLE standard.

The sensor <NUM> may be a sensor for detecting that the sensor piece <NUM> is inserted. The sensor <NUM> can be configured by, for example, an energization detection sensor that detects energization of the sensor piece <NUM> or a swing detection sensor that detects swing by the sensor piece <NUM>.

Next, a functional configuration of the measurement device <NUM> will be described with reference to <FIG> is a block diagram illustrating an example of a functional configuration of the measurement device <NUM> according to the present embodiment.

As illustrated in <FIG> as an example, the measurement device <NUM> may include a first advertisement processing unit <NUM>, a communication unit <NUM>, a storage unit <NUM>, an acquisition unit <NUM>, a setting unit <NUM>, and a second advertisement processing unit <NUM>. The CPU <NUM> can function as the first advertisement processing unit <NUM>, the communication unit <NUM>, the storage unit <NUM>, the acquisition unit <NUM>, the setting unit <NUM>, and the second advertisement processing unit <NUM> by executing a program for establishing communication.

The first advertisement processing unit <NUM> may execute advertisement processing for establishing first communication with the communication terminal <NUM>. Specifically, the first advertisement processing unit <NUM> may establish first communication with the communication terminal <NUM> by transmitting advertisement information together with a connection request.

In the advertisement information transmitted by the first advertisement processing unit <NUM>, an identifier indicating the measurement device <NUM> is preferably set in the identification information, an identifier indicating the communication terminal <NUM> is preferably set in the connection information, "not stored" of an encryption key is preferably set in the bonding information, and "not changed" of the state is preferably set in the state information as initial values. Here, the identifier indicating the communication terminal <NUM> as the connection information may be an internet protocol (IP) address of the communication terminal <NUM>, a media access control (MAC) address of the communication terminal <NUM>, a channel used for BLE communication, or a management number on a database in which an application operating on the communication terminal <NUM> manages the measurement device <NUM>.

The communication unit <NUM> can communicate with the communication terminal <NUM> for which communication has been established. For example, in a case in which first communication is established, the communication unit <NUM> can transmit an encryption key in the measurement device <NUM>, receive the encryption key from the communication terminal <NUM>, and perform pairing to share the encryption key. In a case in which communication is re-established by the second advertisement processing unit <NUM> to be described below, the communication unit <NUM> can transmit setting information regarding the measurement device <NUM> and a measurement result to the communication terminal <NUM> and synchronize data.

The storage unit <NUM> can perform bonding for storing the encryption key of the communication terminal <NUM> paired by the communication unit <NUM>.

The acquisition unit <NUM> can acquire the state in the measurement device <NUM>. Here, for example, the acquisition unit <NUM> can detect and acquire, as the state, a state in which the host device is activated, installation of a measurement target (specifically, sensor piece <NUM>) in the host device, installation of a sample used in measurement, an operation of a user interface, change of setting of the host device by a user, transition to a state in which data can be received from the outside (for example, communication terminal <NUM>), transition to a state in which a measurement result is output, or the like.

The setting unit <NUM> can set advertisement information. Specifically, the setting unit <NUM> can set the presence or absence of change in the state in the state information, and can set the presence or absence of storage of an encryption key in the bonding information in the advertisement information.

For example, in a case in which the acquisition unit <NUM> acquires a "state in which the host device is activated" as the state, the setting unit <NUM> can set "not changed" in the state information. In a case in which the acquisition unit <NUM>, as the state, detects change in the current state in the host device after paring is performed and an encryption key is stored such as "installation of a measurement target (specifically, sensor piece <NUM>) in the host device", "installation of a sample used in measurement", an "operation of a user interface", "change of setting of the host device by a user", "transition to a state in which data is acquired from the outside", or "transition to a state in which a measurement result is output", the setting unit <NUM> can set "changed" in the state information. In the present embodiment, a mode in which "not changed" or "changed" is set as the state information will be described, but the present invention is not limited thereto. The state of the measurement device <NUM> detected by the acquisition unit <NUM> may be set in the state information.

The setting unit <NUM> can set "stored" in the bonding information in a case in which the encryption key of the communication terminal <NUM> is stored in the storage unit <NUM>, and can set "not stored" in the bonding information in a case in which the encryption key is not stored.

Note that a mode in which the setting unit <NUM> according to the present embodiment sets the bonding information and the state information as the advertisement information has been described, however, the present invention is not limited thereto. The setting unit <NUM> may set the connection information. For example, in a case in which designation of the communication terminal <NUM> for establishing communication is received from the user, the setting unit <NUM> may set an identifier indicating the designated communication terminal <NUM> in the connection information.

The second advertisement processing unit <NUM> can execute advertisement processing for re-establishing communication with the communication terminal <NUM>. Specifically, the second advertisement processing unit <NUM> can re-establish communication with the communication terminal <NUM> by transmitting advertisement information set by the setting unit <NUM> together with a connection request.

Next, a hardware configuration of the communication terminal <NUM> will be described with reference to <FIG>.

As illustrated in <FIG> as an example, the communication terminal <NUM> according to the present embodiment may include a CPU <NUM>, a ROM <NUM>, a RAM <NUM>, a storage <NUM>, an input unit <NUM>, a monitor <NUM>, and a communication I/F <NUM>. Each of the CPU <NUM>, the ROM <NUM>, the RAM <NUM>, the storage <NUM>, the input unit <NUM>, the monitor <NUM>, and the communication I/F <NUM> may be connected to each other by a bus <NUM>.

The CPU <NUM> can integrally control the entire communication terminal <NUM>. The ROM <NUM> may store various programs, data, and the like. The RAM <NUM> may be a memory used as a work area in a case in which various programs are executed. The CPU <NUM> can perform processing of establishing communication with the measurement device <NUM> by deploying a program stored in the ROM <NUM> in the RAM <NUM> and executing the program.

The storage <NUM> can be configured by, for example, an HDD, an SSD, a flash memory, or the like. Note that the storage <NUM> may store various programs and the like.

The input unit <NUM> may be a keyboard and a pointing device that receive input of characters, selection of an image, and the like. The monitor <NUM> may display characters and images. The communication I/F <NUM> may transmit and receive data using wireless communication conforming to the BLE standard.

Next, a functional configuration of the communication terminal <NUM> will be described with reference to <FIG> is a block diagram illustrating an example of the functional configuration of the communication terminal <NUM> according to the present embodiment.

As illustrated in <FIG> as an example, the communication terminal <NUM> may include an acquisition unit <NUM>, a determination unit <NUM>, a communication unit <NUM>, and a storage unit <NUM>. The CPU <NUM> can function as the acquisition unit <NUM>, the determination unit <NUM>, the communication unit <NUM>, and the storage unit <NUM> by executing a program for establishing communication. A mode in which each function according to the present embodiment is implemented as a function included in the communication terminal <NUM> by a program for establishing communication stored in advance as an operation system being executed will be described. However, the present invention is not limited thereto. For example, the program for establishing communication may be stored in advance in the communication terminal <NUM> as an application that can be acquired by being downloaded from an external device, and each function may be implemented by the application being executed.

The acquisition unit <NUM> can acquire advertisement information transmitted from the measurement device <NUM>.

The determination unit <NUM> can determine whether or not to establish communication with the measurement device <NUM> according to the acquired advertisement information. Specifically, in a case in which "not stored" is set to the bonding information in the acquired advertisement information, or in a case in which "stored" is set to the bonding information and "changed" is set to the state information, the determination unit <NUM> may determine to establish communication with the measurement device <NUM>. In a case in which "stored" is set to the bonding information and "not changed" is set to the state information in the advertisement information, the determination unit <NUM> may determine not to establish communication for synchronizing data with the measurement device <NUM>.

In a case in which communication establishment is determined in the determination result, the communication unit <NUM> can establish communication with the measurement device <NUM> and transmit and receive data to and from the measurement device <NUM>.

Here, the communication unit <NUM> can establish first communication with the measurement device <NUM> in a case in which "not stored" is set to the bonding information in the advertisement information, and re-establish communication with the measurement device <NUM> in a case in which "stored" is set to the bonding information and "changed" is set to the state information. In a case in which first communication is established, the communication unit <NUM> can transmit the encryption key in the communication terminal <NUM>, receive the encryption key from the measurement device <NUM>, and perform pairing to share the encryption key. A mode in which "establishment of first communication" according to the present embodiment is establishment of communication performed before an encryption key is shared, and "re-establishment of communication" is establishment of communication after an encryption key is shared will be described.

The storage unit <NUM> can store advertisement information and an encryption key acquired from the measurement device <NUM>.

Next, the operation of the measurement system in which the measurement device <NUM> and the communication terminal <NUM> cooperate with each other will be described with reference to <FIG> and <FIG>. <FIG> is a sequence diagram illustrating an example of a flow of the measurement system according to the present embodiment. In <FIG>, steps in the same processing are denoted by the same reference signs, and description thereof is omitted.

As an example, the measurement device <NUM> sets advertisement information and transmits the advertisement information to the communication terminal <NUM> by advertisement processing as illustrated in <FIG> (step S101). Here, the measurement device <NUM> sets information indicating the measurement device <NUM> in the identification information, information indicating the communication terminal <NUM> in the connection information, "not stored" in the bonding information, and "not changed" in the state information as the initial values of the advertisement information.

The communication terminal <NUM> acquires the advertisement information transmitted from the measurement device <NUM> (step S102), and determines whether or not to establish communication with the measurement device <NUM> using the acquired advertisement information (step S103). Here, determination processing will be described in detail with reference to <FIG> described below.

The communication terminal <NUM> determines whether or not to establish communication, and in the case of establishing communication (step S104: YES), transmits a connection response to the measurement device <NUM> and establishes communication with the measurement device <NUM>. Here, in a case in which "not stored" is set in the bonding information and first communication is established, the communication terminal <NUM> performs pairing of an encryption key (step S105), and after the communication is established, stores the advertisement information and the encryption key acquired from the measurement device <NUM> (step S106).

The communication terminal <NUM> determines whether or not to establish communication, and in the case of not establishing communication (step S104: NO), does not transmit a connection response to the measurement device <NUM> and does not establish communication with the measurement device <NUM>.

In a case in which first communication is established, the measurement device <NUM> performs pairing of the encryption key (step S107), and stores (bonds) the received encryption key of the measurement device <NUM> (step S108).

In the case of communicating with the communication terminal <NUM> again after communication with the communication terminal <NUM> is disconnected in order to synchronize a measurement result, the measurement device <NUM> acquires the presence or absence of bonding and the state in the host device (step S109). The measurement device <NUM> sets the bonding information and the state information in the advertisement information according to the presence or absence of bonding and the current state of the host device (step S110), and transmits the advertisement information by advertisement processing (step S111). For example, the measurement device <NUM> sets "stored" in the bonding information in the advertisement information in a case in which the encryption key is stored (bonded), and sets "changed" in the state information in a case in which there is change in the host device.

The communication terminal <NUM> acquires the advertisement information transmitted from the measurement device <NUM> (step S112), and determines whether or not to establish communication with the measurement device <NUM> using the acquired advertisement information (step S103).

The communication terminal <NUM> determines whether or not to re-establish communication, and in the case of re-establishing communication (step S113: YES), transmits a connection response to the measurement device <NUM> and re-establishes communication with the measurement device <NUM>. Here, in a case in which "stored" is set in the bonding information, "changed" is set in the state information, and communication with the measurement device <NUM> is re-established, the communication terminal <NUM> receives a measurement result and setting information from the measurement device <NUM> and performs data synchronization (step S114).

The communication terminal <NUM> determines whether or not to establish communication, and in the case of not establishing communication (step S113: NO), does not transmit a connection response to the measurement device <NUM> and does not establish communication with the measurement device <NUM>.

In a case in which communication with the communication terminal <NUM> is re-established, the measurement device <NUM> transmits a measurement result and setting information and performs data synchronization (step S115).

Next, the operation of the communication terminal <NUM> will be described with reference to <FIG> is a flowchart illustrating an example of a flow of the determination processing by the communication terminal <NUM> of the present embodiment.

In step S201, the CPU <NUM> determines whether or not "stored" is set to the bonding information in the acquired advertisement information. In a case in which "stored" is set in the bonding information (step S201: YES), the CPU <NUM> proceeds to step S202. On the other hand, in a case in which "stored" is not set in the bonding information ("not stored" is set in the bonding information) (step S201: NO), the CPU <NUM> proceeds to step S205.

In step S202, the CPU <NUM> determines whether or not "changed" of the state is set in the state information in the acquired advertisement information. In a case in which "changed" of the state is set in the state information (step S202: YES), the CPU <NUM> proceeds to step S203. On the other hand, in a case in which "changed" of the state is not set in the state information ("not changed" of the state is set in the state information) (step S202: NO), the CPU <NUM> proceeds to step S204.

In step S203, the CPU <NUM> determines to re-establish communication with the measurement device <NUM>.

In step S204, the CPU <NUM> determines not to establish communication with the measurement device <NUM>.

In step S205, the CPU <NUM> determines to establish first communication with the measurement device <NUM>.

According to the present embodiment, establishment of communication unintended by a user can be eliminated in a case in which the communication terminal <NUM> and the measurement device <NUM> perform BLE communication as described above.

In the present embodiment, a mode in which whether or not to re-establish communication is determined according to the presence or absence of change in the state set in the state information has been described. However, the present invention is not limited thereto. In a case in which the state of the measurement device <NUM> is set in the state information, change in the state of the measurement device <NUM> may be determined by the acquired advertisement information being compared with the stored advertisement information, and whether or not to re-establish communication may be determined according to the presence or absence of the change in the state.

In the present embodiment, a mode in which first communication is established in a case in which "not stored" is set in the bonding information has been described. However, the present invention is not limited thereto. For example, in a case in which "not stored" is set in the bonding information but the encryption key is stored in the communication terminal <NUM>, the communication terminal <NUM> may perform control such that communication is not established on the assumption that a discrepancy has occurred. The communication terminal <NUM> may perform control such that first communication is established even in the case of second establishment of communication (in other words, re-establishment).

In the first embodiment, a mode in which communication is established by advertisement information being transmitted from the measurement device <NUM> has been described. In the present embodiment, a mode in which communication is established by a connection request being transmitted from a communication terminal <NUM> will be described.

Hereinafter, the configuration of a measurement system <NUM> (see <FIG>), the hardware configuration of a measurement device <NUM> (see <FIG>), the functional configuration of the measurement device <NUM> (see <FIG>), the hardware configuration of the communication terminal <NUM> (see <FIG>), the functional configuration of the communication terminal <NUM> (see <FIG>), and an example of the flow of determination processing (see <FIG>) are the same as those of the first embodiment, and thus description thereof is omitted.

First, the operation of a measurement system in which the measurement device <NUM> and the communication terminal <NUM> cooperate with each other will be described with reference to <FIG> is a sequence diagram illustrating an example of a flow of the measurement system according to the present embodiment. In <FIG>, the same steps as those in the processing illustrated in <FIG> are denoted by the same reference signs as those in <FIG>, and description thereof is omitted.

In the case of performing communication with the measurement device <NUM> again after communication with the measurement device <NUM> is disconnected, the communication terminal <NUM> executes scan processing (active scan) of transmitting a connection request in order to establish communication from the communication terminal <NUM> to the measurement device <NUM> (step S116).

In the case of establishing communication with the communication terminal <NUM>, the measurement device <NUM> transmits a connection response to the received connection request and approves connection (step S117).

In the case of receiving the connection response, the communication terminal <NUM> re-establishes communication with the measurement device <NUM> regardless of advertisement information (step S118).

As described above, according to the present embodiment, communication with the desired measurement device <NUM> can be established by the communication terminal <NUM> being operated.

In the first embodiment and the second embodiment, a mode in which one measurement device <NUM> and one communication terminal <NUM> are included in the measurement system <NUM> has been described. In the present embodiment, a mode in which one measurement device <NUM> and plural communication terminals <NUM> are included in a measurement system <NUM> will be described. In the present embodiment, in a case in which the individual communication terminals <NUM> are distinguished, the individual communication terminals <NUM> are described as "communication terminal 100A" and "communication terminal 100B", and in a case in which the individual communication terminals <NUM> are not distinguished, the individual communication terminals <NUM> are simply described as "communication terminals <NUM>".

Hereinafter, the configuration of the measurement system <NUM> (see <FIG>), the hardware configuration of the measurement device <NUM> (see <FIG>), the functional configuration of the measurement device <NUM> (see <FIG>), the hardware configuration of a communication terminal <NUM> (see <FIG>), the functional configuration of the communication terminal <NUM> (see <FIG>), and an example of the flow of determination processing (see <FIG>) are the same as those of the first embodiment, and thus description thereof is omitted.

First, the operation of a measurement system in which the measurement device <NUM> and the communication terminals <NUM> cooperate with each other will be described with reference to <FIG> is a sequence diagram illustrating an example of a flow of the measurement system according to the present embodiment. In <FIG>, the same steps as those in the processing illustrated in <FIG> are denoted by the same reference signs as those in <FIG>, and description thereof is omitted.

In the present embodiment, a mode in which the measurement device <NUM> can select a connection destination with which communication is desired to be established by a communication terminal <NUM> establishing communication according to connection information will be described. Hereinafter, a mode in which the communication terminal 100A and the communication terminal 100B are located in the vicinity of the measurement device <NUM> will be described.

The measurement device <NUM> sets information indicating a communication terminal <NUM> with which communication is desired to be established in the connection information in advertisement information (step S119), and transmits the advertisement information (step S120).

The communication terminals <NUM> acquire the advertisement information transmitted from the measurement device <NUM> (step S121), and determine whether or not the host device is applicable to the connection information using the acquired advertisement information (step S122). In a case in which the connection information indicates the host device (step S122: YES), the communication terminals <NUM> proceed to step S103 and perform determination processing. On the other hand, in a case in which the connection information does not indicate the host device (step S122: NO), the communication terminals <NUM> do not perform determination processing and do not establish communication with the measurement device <NUM>.

Here, since information indicating the communication terminal 100A is set in the connection information in the advertisement information, communication between the communication terminal 100A and the measurement device <NUM> is established, and communication between the communication terminal 100B and the measurement device <NUM> is not established.

After the communication with the communication terminal 100A is disconnected, the measurement device <NUM> changes the information to information indicating the communication terminal 100B with which communication is desired to established, sets the information in the connection information (step S123), and transmits the advertisement information (step S124).

The communication terminals <NUM> acquire the advertisement information transmitted from the measurement device <NUM> (step S125), and determine whether or not to establish communication using the acquired advertisement information (step S126). In a case in which the connection information indicates the host device (step S126: YES), the communication terminals <NUM> proceed to step S103 and perform determination processing. On the other hand, in a case in which the connection information does not indicate the host device (step S126: NO), the communication terminals <NUM> do not perform determination processing and do not establish communication with the measurement device <NUM>.

Here, since information indicating the communication terminal 100B is set in the connection information in the advertisement information, communication between the communication terminal 100A and the measurement device <NUM> is not established, and communication between the communication terminal 100B and the measurement device <NUM> is established.

In the present embodiment, a mode in which establishment of communication is controlled by connection information being changed has been described. However, the present invention is not limited thereto. Re-establishment of communication may be controlled by connection information being changed. Communication may be re-established by scan processing by a communication terminal <NUM> after connection information is changed and the communication is established.

According to the present embodiment, establishment of communication unintended by a user can be eliminated in a case in which plural communication terminals <NUM> exist as described above.

A mode in which the measurement device <NUM> according to the embodiments is a BG measurement device has been described. However, the present invention is not limited thereto. The measurement device <NUM> may be a blood pressure measurement device, a body temperature measurement device, or any device as long as data can be transmitted and received using BLE communication with an external communication terminal <NUM>.

In each of the embodiments, a processor refers to a processor in a broad sense, and includes a general-purpose processor (for example, central processing unit (CPU) or the like) or a dedicated processor (for example, graphics processing unit (GPU), application specific integrated circuit (ASIC), field programmable gate array (FPGA), programmable logic device, or the like).

The operation of the processor in each of the embodiments may be performed not only by one processor but also by cooperation of plural processors that exist at physically separated positions. The order of each piece of the operation of the processor is not limited to the order described in each of the embodiments, and may be appropriately changed.

The measurement device and the communication terminal according to the embodiments have been described above by way of example. The embodiments may be in the form of a program for causing a computer to execute a function of each unit included in the measurement device and the communication terminal. The embodiments may be in the form of a non-transitory computer-readable storage medium that stores the program.

The configurations of the measurement device and the communication terminal described in the embodiments are merely examples, and may be changed according to the situation without departing from the gist.

The flows of processing of the program described in the embodiments are also merely examples, and unnecessary steps may be deleted, new steps may be added, or the processing order may be changed without departing from the gist.

In the embodiments, a case in which the processing according to the embodiments is implemented by a software configuration using a computer by a program being executed has been described, but the present invention is not limited thereto. The embodiments may be implemented by, for example, a hardware configuration or a combination of a hardware configuration and a software configuration.

All references, including publications, patent applications, and patents, cited herein are hereby incorporated by reference to the same extent as if each reference were individually and specifically indicated to be incorporated by reference and were set forth in its entirety herein.

The use of the terms "a" and "an" and "the" and similar referents in the context of describing the disclosure (especially in the context of the following claims) is to be construed to cover both the singular and the plural, unless otherwise indicated herein or clearly contradicted by context. The use of any and all examples, or exemplary language (e.g., "such as") provided herein, is intended merely to better illuminate the disclosure and does not pose a limitation on the scope of the disclosure unless otherwise claimed. No language in the specification should be construed as indicating any non-claimed element as essential to the practice of the disclosure.

Preferred embodiments of this disclosure are described herein, including the best mode known to the inventors for carrying out the disclosure. Variations of those preferred embodiments may become apparent to those of ordinary skill in the art upon reading the foregoing description. The inventors expect skilled artisans to employ such variations as appropriate, and the inventors intend for the disclosure to be practiced otherwise than as specifically described herein. Accordingly, this disclosure includes all modifications and equivalents of the subject matter recited in the claims appended hereto as permitted by applicable law. Moreover, any combination of the above-described elements in all possible variations thereof is encompassed by the disclosure unless otherwise indicated herein or otherwise clearly contradicted by context.

Regarding the embodiments, a supplement is further disclosed below.

A measurement device according to a first aspect includes a processor, wherein the processor is configured to transmit advertisement information to a communication terminal in advertisement processing for establishing communication between a host device and the communication terminal, the advertisement information including state information indicating a state of the host device and bonding information indicating a presence or an absence of storage of an encryption key used for communication with the communication terminal, and in advertisement processing for re-establishing communication after the encryption key is shared between the host device and the communication terminal, the advertisement information includes bonding information indicating storage of the encryption key and state information indicating a current state of the host device.

In a measurement device according to a second aspect, communication for synchronizing data between the host device and the communication terminal is not established in a case in which the state information included in the advertisement information is not changed from a previous communication in the advertisement processing for re-establishing communication in the measurement device according to the first aspect.

In a measurement device according to a third aspect, in advertisement processing for establishing communication before the encryption key is shared between the host device and the communication terminal, the advertisement information includes bonding information indicating non-storage of the encryption key and state information indicating a current state of the host device in the measurement device according to the first aspect or the second aspect.

In the measurement device according to a fourth aspect, the processor further includes connection information for identifying a connection destination in established communication in the advertisement information in the measurement device according to any one of the first aspect to the third aspect.

In a measurement device according to a fifth aspect, in a case in which there are a plurality of communication terminals, the processor changes the connection information for each communication terminal that re-establishes communication and transmits the advertisement information in the measurement device according to the fourth aspect.

In a measurement device according to a sixth aspect, the processor changes the state information according to at least one of a presence or an absence of installation of a measurement target in the host device, a change of setting in the host device, a transition to a state in which a measurement result is output, or a transition to a state in which data transmitted from the communication terminal can be received in the measurement device according to any one of the first aspect to the fifth aspect.

A measurement system according to a seventh aspect includes a measurement device according to any one of the first aspect to the sixth aspect, and a communication terminal that receives the advertisement information and establishes communication with the measurement device.

In a measurement system according to an eighth aspect, the communication terminal re-establishes communication with the measurement device regardless of the advertisement information in a case in which scan processing for establishing communication from the communication terminal to the measurement device is performed in the measurement system according the seventh aspect.

In a measurement system according to a ninth aspect, the communication terminal re-establishes communication with the measurement device regarding received advertisement information in a case in which the state information indicates change and the bonding information indicates storage of the encryption key in the advertisement information, and does not re-establish communication with the measurement device regarding the advertisement information in a case in which the state information indicates no change or the bonding information indicates non-storage of the encryption key in the measurement system according to the seventh aspect or the eighth aspect.

A measurement method according to a tenth aspect includes transmitting advertisement information to a communication terminal in advertisement processing for establishing communication between a host device and the communication terminal, the advertisement information including state information indicating a state of the host device and bonding information indicating a presence or an absence of storage of an encryption key used for communication with the communication terminal, and in advertisement processing for re-establishing communication after the encryption key is shared between the host device and the communication terminal, the advertisement information includes bonding information indicating storage of the encryption key and state information indicating a current state of the host device.

Claim 1:
A measurement device comprising a processor (<NUM>),
wherein the processor (<NUM>) is configured to transmit advertisement information to a communication terminal (<NUM>) in advertisement processing for establishing communication between the measurement device (<NUM>) and the communication terminal (<NUM>), the advertisement information including state information indicating a state of the measurement device (<NUM>) and bonding information indicating a presence or an absence of storage of an encryption key used for communication with the communication terminal (<NUM>),
in advertisement processing for re-establishing communication after the encryption key is shared between the measurement device (<NUM>) and the communication terminal (<NUM>), the advertisement information includes bonding information indicating stored of the encryption key and state information indicating a current state of the measurement device (<NUM>),
wherein communication for synchronizing data between the measurement device (<NUM>) and the communication terminal (<NUM>) is not established in a case in which the state information included in the advertisement information is not changed from a previous communication in the advertisement processing for re-establishing communication.