JP7718450B2 - Electronic device, control method, and control program - Google Patents

Description

The present invention relates to an electronic device, a control method, and a control program.

Many electronic devices have traditionally used optical pulse wave sensors to acquire pulse waves from a target, such as a finger, earlobe, or wrist, using the well-known photoplethysmography (or optical pulse wave detection method), and then calculate pulse rate (heart rate) based on the pulse waves. Optical pulse wave sensors primarily consist of a light-emitting element that irradiates the target with detection light, and a light-receiving element that receives light reflected from the target when the detection light is irradiated. Furthermore, for example, Patent Document 1 listed below describes a configuration in which, when an electronic device equipped with an optical pulse wave sensor needs to notify the user, it notifies the user by illuminating a light-emitting element configured separately from the optical pulse wave sensor, i.e., a light-emitting element dedicated to notification, displaying an image or text on a display device, or outputting an alarm sound or audio guide from a sound generating unit.

Japanese Patent Application Laid-Open No. 2017-225881

However, when alerting the user as described above by emitting light from a dedicated light-emitting element, outputting an alarm sound from a sound generating unit, or displaying an image on a display device, it is essential to provide the electronic device with a dedicated light-emitting element, sound generating unit, and display device for alerting. This increases the size of the circuit board in the electronic device, reducing the design freedom of the electronic device and increasing the number of components and the labor required to mount the components on the board, resulting in increased costs.

Of course, this problem would not arise if the configuration included a display device that displayed various information other than the type of notification, but if a large amount of power is required to drive the display device, power will be wasted just for the purpose of notification. Furthermore, in that case, if the user is not paying attention to the display device screen, the notification function will not function, resulting in unnecessary power consumption.

The objective of this invention is to provide an alarm function to electronic devices without increasing costs or the power consumption associated with alarm operations.

The electronic device according to the present invention is an electronic device including a light-emitting element and a control unit,
The light-emitting element is
a light-emitting element that emits light to allow the light-receiving element to acquire information;
an optical sensor for detecting biological information of a user wearing the electronic device, the optical sensor being included together with the light receiving element;
The control unit
If the amount of light received by the light receiving element is equal to or less than a threshold, it is determined that the electronic device is not being worn by the user , and the light emitting element is caused to emit light in a first pattern for acquiring biometric information of the user;
If the amount of light received by the light receiving element exceeds a threshold value, it is determined that the electronic device is being worn by the user, and the light emitting element is made to emit light in a second pattern different from the first pattern to notify the user.

A method for controlling an electronic device according to the present invention is a method for controlling an electronic device including a light-emitting element and a control unit,
The light-emitting element is
a light-emitting element that emits light to allow the light-receiving element to acquire information;
an optical sensor for detecting biological information of a user wearing the electronic device, the optical sensor being included together with the light receiving element;
If the amount of light received by the light receiving element is equal to or less than a threshold, it is determined that the electronic device is not being worn by the user, and the light emitting element is caused to emit light in a first pattern for acquiring biometric information of the user;
If the amount of light received by the light receiving element exceeds a threshold value, it is determined that the electronic device is being worn by the user, and the light emitting element is made to emit light in a second pattern different from the first pattern to notify the user.

The control program of the present invention is an electronic device having a light-emitting element and a control unit, wherein the light-emitting element is a light-emitting element that emits light to cause a light-receiving element to acquire information, and the control program is executed by a computer of the electronic device that is included together with the light-receiving element in an optical sensor that detects biological information of a user wearing the electronic device ,
If the amount of light received by the light receiving element is equal to or less than a threshold, it is determined that the electronic device is not being worn by the user, and the light emitting element is caused to emit light in a first pattern for acquiring biometric information of the user;
If the amount of light received by the light receiving element exceeds a threshold value, it is determined that the electronic device is being worn by the user, and the light emitting element is made to emit light in a second pattern different from the first pattern to notify the user.

This invention allows electronic devices to have a notification function without increasing costs or the power consumption associated with notification operations.

1 is an external view of an electronic device according to an embodiment of the present invention. FIG. 2 is a block diagram showing an outline of the electrical configuration of the electronic device. 10 is a flowchart showing the contents of an LED control process performed by a CPU. 10 is a flowchart showing the contents of a notification process performed by a CPU.

An embodiment of the present invention will now be described. Figure 1 is a schematic diagram of an electronic device 1 according to an embodiment of the present invention, with (a) showing the front side of the electronic device 1 and (b) showing the back side of the electronic device 1. The electronic device 1 of this embodiment is a wristwatch-type device (such as a smartwatch) equipped with an optical pulse wave sensor, and includes a device main body 2 that corresponds to the watch body.

As shown in FIG. 1(a), a display unit 3 is provided on the surface of the device main body 2, occupying almost the entire surface, and multiple button switches 4, 5, and 6 are provided on the outer periphery of the device main body 2. The display unit 3 displays various information, including the time and pulse rate (heart rate). The multiple button switches 4, 5, and 6 are used by the user to operate the electronic device 1. A touch panel is also provided on the surface of the display unit 3, and the display unit 3, together with the multiple button switches 4, 5, and 6, is also used to operate the electronic device 1. Note that in this specification, the term "user" refers not only to the owner of the electronic device 1 but also to the person to whom it is loaned, as long as it is a user of the electronic device 11.

As shown in FIG. 1(b), the back surface of the device body 2 is closed by a back cover 2a, and a circular protrusion 7 is provided in the center of this back cover 2a, protruding slightly from the surrounding area so that it fits snugly against the user's wrist when the electronic device 1 is worn on the wrist. A rectangular light-receiving window 8 is provided in the center of the protrusion 7, and rectangular light-emitting windows 9a, 9b, and 9c, each smaller than the light-receiving window 8, are provided at a distance from the light-receiving window 8 on three sides. These light-receiving window 8 and light-emitting windows 9a, 9b, and 9c are formed by sealing rectangular through-holes in the protrusion 7 with a synthetic resin or the like that is capable of transmitting light emitted by a light-emitting element (described below) and reflected light.

Figure 2 is a block diagram showing an outline of the electrical configuration of electronic device 1. As shown in Figure 2, electronic device 1 includes a CPU (Central Processing Unit) 11 as a processing unit, a ROM (Read Only Memory) 12, a RAM (Random Access Memory) 13, a clock unit 14, a display device 15, an input operation unit 16, a communication unit 17, an acceleration sensor 18, a magnetic sensor 19, a pulse wave sensor 20, and a power supply unit 23.

The CPU 11 controls the entire device main body 2 in accordance with the programs stored in the ROM 12. The ROM 12 may be a non-volatile memory, such as a flash memory, whose stored contents are rewritable. The RAM 13 is a working memory in which the CPU 11 temporarily stores various data as needed. The display device 15 includes a flat display panel, such as a liquid crystal display panel or an EL (electroluminescence) display panel, arranged on the display unit 3, and a drive circuit for driving them. The input operation unit 16 includes the multiple button switches 4, 5, and 6 and a touch panel provided on the surface of the display unit 3, detects user operations on these, and supplies the detected operations to the CPU 11 as operation information.

The communication unit 17 includes, for example, an antenna, a radio frequency (RF) circuit, a baseband (BB) circuit, and a memory circuit, and transmits and receives wireless signals based on, for example, Bluetooth (registered trademark) Low Energy (BLE). The communication unit 17 demodulates, decodes, etc. the received wireless signals and sends them to the CPU 11, while encoding, modulating, etc. the signals sent from the CPU 11 and transmitting them to the outside, thereby enabling data communication between the electronic device 1 and other external devices. External devices include smartphones, tablet devices, and personal computers.

The power supply unit 23 includes a secondary battery such as a lithium-ion battery, a charging circuit, and a voltage conversion circuit, and controls the charging of the secondary battery from an external power source, while supplying power to each component within the electronic device 1 at the operating voltage required by each component. Charging of the secondary battery is accomplished, for example, via a charging cable connected to the device main body 2, or via wireless charging using electromagnetic induction. The acceleration sensor 18 is, for example, a three-axis acceleration sensor, and detects acceleration in each of three mutually perpendicular axes applied to the electronic device 1, and supplies this data to the CPU 11 as acceleration data. The magnetic sensor 19 is, for example, a three-axis geomagnetic sensor, and detects geomagnetism in each of three mutually perpendicular axes applied to the electronic device 1, and supplies this data to the CPU 11 as geomagnetic data.

The pulse wave sensor 20 is an optical pulse wave sensor and includes a plurality of light-emitting diodes (LEDs), i.e., a first LED 21a, a second LED 21b, and a third LED 21c, which are light-emitting elements arranged inside the light-receiving units 9a, 9b, and 9c provided on the rear side of the device body 2, and a photodiode 22, which is a light-receiving element arranged inside the light-receiving unit 8. In the following description, the first LED 21a, the second LED 21b, and the third LED 21c will be abbreviated as LEDs 21a, 21b, and 21c, respectively, as necessary. The pulse wave sensor 20, while the electronic device 1 is primarily worn on the user's wrist, irradiates the user's wrist with detection light from each of the LEDs 21a, 21b, and 21c, receives light reflected from the user's wrist while the detection light is irradiated by the photodiode 22, and supplies a detection signal corresponding to the amount of light received by the photodiode 22 to the CPU 11 as pulse wave data, allowing the CPU 11 to measure the pulse rate (heart rate) using a well-known method. In this embodiment, the detection light emitted by each of the LEDs 21a, 21b, and 21c is green light that is easily absorbed by hemoglobin in the blood, for example, visible light with a wavelength of 520 nm to 530 nm.

The electronic device 1 of this embodiment, configured as described above, is provided with multiple operating modes for different uses, which can be selectively set by the user. While the electronic device 1 is operating in one of these operating modes, the CPU 11 executes various processes according to the currently set operating mode based on the programs stored in the ROM 12. As a result, while the electronic device 1 is worn on the user's wrist, various information, including the user's exercise information and biometric information, is acquired using the acceleration sensor 18, magnetic sensor 19, and pulse wave sensor 20 and recorded in the RAM 13. Some of this information is also displayed on the display device 15. The electronic device 1 also has an operating mode that measures the user's heart rate at regular intervals (e.g., every minute) and sequentially records and displays the measurement results, i.e., the user's biometric information.

Furthermore, while the electronic device 1 is in operation, the CPU 11 constantly determines whether the electronic device 1 is being worn on the user's arm. This determination is made using the acceleration sensor 18 described above. More specifically, a large amount of acceleration transition data for the device main body 2 when the electronic device 1 is worn on the arm and when it is removed from the arm, as well as acceleration transition data for the device main body 2 during other uses, is acquired in advance, and a classifier (e.g., a support vector machine or a neural network) is generated by supervised machine learning using this acquired acceleration transition data. The classifier is then trained to determine whether the input acceleration transition data for the device main body 2 is acceleration transition data when the electronic device 1 is worn on the arm or removed from the arm.

When the electronic device 1 is operating, the CPU 11 repeatedly executes the process shown in Figure 3 at a predetermined cycle of operation timing in parallel with the above process. That is, Figure 3 is a flowchart showing the LED control process by the CPU 11, which mainly relates to the illumination of the LEDs 21a, 21b, and 21c of the pulse wave sensor 20.

When performing this process, the CPU 11 first determines whether the electronic device 1 is being worn on the user's wrist (step SA1). This determination is made based on the results of the determination operation that is constantly performed, as described above. In other words, it determines whether the electronic device 1 was being worn in the previous determination result. If the electronic device 1 is being worn (step SA1: YES), the CPU 11 then determines whether that point in time is the timing for measuring the heart rate (step SA2). The heart rate measurement timing is the timing for performing the heart rate measurement at regular intervals (e.g., every minute) as described above. If the point in time is not the timing for measuring the heart rate (step SA2: YES), the CPU 11 ends the process.

On the other hand, if that time is the heart rate measurement timing (step SA2: YES), CPU 11 causes each LED 21a, 21b, 21c to emit light for a fixed period of time in a detection pattern for acquiring a pulse wave (step SA3), and then ends the process. In step SA3, CPU 11 causes each LED 21a, 21b, 21c to emit light for a fixed period of time at a predetermined brightness suitable for acquiring a pulse wave. While each LED 21a, 21b, 21c is emitting light, light reflected from the user's wrist is received by photodiode 22, and CPU 11 acquires a detection signal from pulse wave sensor 20 corresponding to the amount of received light as pulse wave data. Then, the heart rate is calculated based on the pulse wave data, stored in RAM 13, and displayed on display device 15.

On the other hand, if the electronic device 1 is not attached (step SA1: NO), the CPU 11 determines whether the electronic device 1 is being charged by determining the operating state of the power supply unit 23 (step SA4). If the electronic device 1 is being charged (step SA4: YES), the CPU 11 causes the LEDs 21a, 21b, and 21c to light up in a charging notification pattern indicating that the electronic device 1 is being charged (step SA5), and ends the process. In step SA5, the CPU 11 causes the LEDs 21a, 21b, and 21c to begin emitting light in a pattern indicating that charging is in progress. In this case, the light emission pattern of the LEDs 21a, 21b, and 21c is lit at a brightness sufficient to indicate that the electronic device 1 is being charged, and the brightness in this case is lower than the brightness used when the LEDs 21a, 21b, and 21c were made to emit light in the process of step SA3.

Also, if the electronic device 1 is not in a worn state (step SA1: NO) and is not being charged (step SA4: NO), the CPU 11 turns off each of the LEDs 21a, 21b, and 21c (step SA5) and ends the process. That is, if the LEDs 21a, 21b, and 21c were previously lit, the CPU 11 stops them from emitting light, and if the LEDs 21a, 21b, and 21c were not lit, the CPU 11 maintains that state.

As described above, in the electronic device 1 of this embodiment, when the device is in a charging state, the CPU 11 lights up the LEDs 21a, 21b, and 21c of the pulse wave sensor 20. This allows the LEDs 21a, 21b, and 21c to function as indicators that notify the charging state. Therefore, the electronic device 1 does not need to have a dedicated LED for notifying the charging state, allowing for a smaller circuit board size and greater design flexibility. At the same time, the labor required to mount electronic components on the circuit board is reduced, thereby reducing the cost of the electronic device 1. Furthermore, because the brightness of the LEDs 21a, 21b, and 21c when functioning as indicators is much lower than when measuring heart rate, there is no unnecessary power consumption, as would be the case, for example, when displaying the charging state on the display device 15. Therefore, the electronic device 1 can maintain its notification function without incurring increased power consumption associated with the charging state notification operation.

Next, the notification process executed by the CPU 11 in the electronic device 1 at specific times when a notification to the user is required will be described with reference to the flowchart in Figure 4. This notification process is a process for issuing a temporary notification at specific times, and specific types of notifications include, for example, a notification of an incoming call on the smartphone or a notification of a received message on an SNS (Social Networking Service) when the electronic device 1 is connected (paired) with a smartphone via BLE.

At the specific timing described above, the CPU 11 first determines whether the electronic device 1 is being charged by determining the operating state of the power supply unit 23. If it is being charged (step SB1: YES), the CPU 11 displays text information, graphics, etc. indicating the type of notification on the screen of the display device 15, i.e., the display unit 3 (step SB2), and then ends the process. This allows the user to be notified of incoming calls, message notifications, etc. Note that when charging is in progress, the LEDs 21a, 21b, and 21c of the pulse wave sensor 20 are lit in a charging notification pattern in accordance with the LED control process described above.

On the other hand, if the electronic device 1 is not charging (step SB1: NO), the CPU 11 further checks whether the electronic device 1 is being worn on the user's wrist based on the amount of light received by the photodiode 22 without illuminating the LEDs 21a, 21b, and 21c of the pulse wave sensor 20 (step SB3). If the amount of light received by the photodiode 22 is below a threshold, the CPU 11 determines that the electronic device 1 is being worn, assuming that external light is being blocked by the user's wrist and therefore is not being received by the photodiode 22. If the amount of light received exceeds the threshold, the CPU 11 determines that external light is not being blocked by the wrist and is being received by the photodiode 22, assuming that the electronic device 1 is not being worn. In other words, the CPU 11 re-determines whether the electronic device 1 is being worn based on information different from that used in the steady-state determination described above. If it is determined that the electronic device 1 is being worn (step SB3: YES), even if the LEDs 21a, 21b, and 21c are turned on to notify the user of an incoming call or message, the user will not notice them because they are blocked by the wrist. Therefore, the CPU 11 causes the display device 15 (display unit 3) to display text information, graphics, etc. indicating the type of notification (step SB2), just as when the electronic device 1 is charging, and ends the process.

On the other hand, if the CPU 11 determines that the electronic device 1 is not being worn (step SB3: NO), it first predetermines the light emission pattern of each LED 21a, 21b, 21c of the pulse wave sensor 20 according to the type of notification to the user (step SB4). The light emission pattern determined here is one of a plurality of predetermined light emission patterns, and is a pattern that has been predetermined to correspond to a plurality of notification types. Examples of light emission patterns include simultaneous illumination or simultaneous blinking of each LED 21a, 21b, 21c, or sequential illumination in a predetermined order or randomly. Note that the correspondence between notification types and light emission patterns does not need to be one-to-one, and a certain light emission pattern may correspond to a plurality of notification types.

The CPU 11 then causes each of the LEDs 21a, 21b, and 21c to emit light in the determined light emission pattern (step SB5). In other words, each of the LEDs 21a, 21b, and 21c begins emitting light in a specific light emission pattern. The brightness of each of the LEDs 21a, 21b, and 21c at this time is equal to or higher than the brightness of the detection pattern used to acquire pulse waves during heart rate measurement. This allows the high-brightness light emitted by each of the LEDs 21a, 21b, and 21c to notify the user of incoming calls, messages, and the like, even when the user is not wearing the electronic device 1, i.e., is not paying attention to the display unit 3.

Then, the CPU 11 continues illuminating each of the LEDs 21a, 21b, and 21c according to the determined illumination pattern until the user performs an alarm stop operation, such as operating one of the button switches 4, 5, and 6 or touching the display unit 3 (step SB6: NO). Once the user performs an alarm stop operation (step SB6: YES), the CPU 11 stops the illumination of each of the LEDs 21a, 21b, and 21c (step SB7) and ends the process.

As described above, in the electronic device 1 of this embodiment, when a temporary notification is made at a specific timing, the CPU 11 causes each of the LEDs 21a, 21b, and 21c of the pulse wave sensor 20 to emit light, thereby more reliably making the notification even in situations where the user is not paying attention to the display unit 3. This makes it highly likely that power will be wasted during the notification operation, as would be the case when a temporary notification is made at a specific timing by the display device 15. This ensures that the electronic device 1 can maintain its notification function without incurring an increase in power consumption due to the temporary notification operation at a specific timing.

In addition, the electronic device 1 provides temporary alerts by illuminating the LEDs 21a, 21b, and 21c of the pulse wave sensor 20 only when the electronic device 1 is not being worn by the user. This eliminates unnecessary alerts when the electronic device is not being worn.

Furthermore, in the electronic device 1, the light emission patterns of each LED 21a, 21b, and 21c during the alarm operation are specific light emission patterns determined in accordance with the type of alarm, so the user can be informed of the specific type of alarm by differences in the light emission patterns.

In this embodiment, the light color of each of the LEDs 21a, 21b, and 21c is described as green, but this is not limiting and each of the LEDs 21a, 21b, and 21c may also be red. Also, each of the LEDs 21a, 21b, and 21c may be two types: one that emits green light and one that emits red light. In this case, the LED that emits light for temporary notifications may be an LED with a color determined according to the type of notification, allowing the user to distinguish the type of notification by the color of the light emitted.

Furthermore, when illuminating each LED 21a, 21b, and 21c for a temporary notification, the brightness of each LED may be varied depending on the inclination of the electronic device 1 and the surrounding environment by varying the drive current or by varying the duty ratio and driving the LEDs. That is, when the electronic device 1 is not being worn, it is often placed in an arbitrary location. In this case, the greater the inclination of the electronic device 1 relative to the horizontal plane, i.e., the closer the optical axis of the light emitted by each LED 21a, 21b, and 21c is to the vertical, the more difficult it is for the user to perceive the light emitted by each LED 21a, 21b, and 21c. Therefore, when illuminating each LED 21a, 21b, and 21c for a temporary notification, the inclination of the electronic device 1 relative to the horizontal plane is detected in advance using an acceleration sensor 18, etc., and the brightness of each LED 21a, 21b, and 21c is set higher the smaller the inclination of the electronic device 1. This makes it easier for the user to perceive the light emitted by each LED 21a, 21b, and 21c.

Furthermore, when the area around the electronic device 1 is dark, the light emitted by each of the LEDs 21a, 21b, and 21c can be easily recognized by the user even if the brightness of these LEDs is low. Therefore, for example, by checking the brightness of the surroundings based on the amount of external light received by the photodiode 22, and setting the brightness of each of the LEDs 21a, 21b, and 21c to be lower the darker the area around the electronic device 1, the power consumption associated with temporary notifications can be reduced.

The electronic device 1 has been described here in which the LEDs 21a, 21b, and 21c, together with the photodiode 22, constitute a pulse wave sensor 20, i.e., an optical sensor that acquires a user's biometric information. However, the present invention is not limited to this and can be applied to any electronic device that is equipped with a light-emitting element such as an LED that emits light for acquiring information. In this case, the number of light-emitting elements such as LEDs, the shape of the electronic device, and the use of the electronic device are also arbitrary. The present invention can also be applied to a barcode (two-dimensional code) reader used to read barcodes (two-dimensional codes), for example.

The above describes the embodiments of the present invention and their modifications, but these can be modified as needed within the scope of the effects of the present invention, and modified embodiments are also included in the scope of the inventions described in the claims and inventions equivalent to those inventions. The inventions originally described in the claims of this application are appended below.
[Claim 1]
A control device for an electronic device, characterized in that it is provided with a processing unit that causes a light-emitting element provided in the electronic device to emit light for allowing a light-receiving element to acquire information, to emit alert light for notifying a user of the electronic device.
[Claim 2]
2. The electronic device control device according to claim 1, wherein the light-emitting element is included in an optical sensor that detects biometric information of a user wearing the electronic device, together with the light-receiving element, and is provided in the electronic device.
[Claim 3]
3. The control device for electronic equipment according to claim 1, wherein the processing unit causes the light emitting element to emit the light for notification at a luminance different from the luminance of the light for causing the light receiving element to acquire information.
[Claim 4]
The control device for an electronic device as described in claim 2 or 3, characterized in that the processing unit determines whether the electronic device is worn by a user, and causes the light-emitting element to emit the notification light under the condition that the electronic device is not worn by a user and is in an unworn state.
[Claim 5]
5. The electronic device control device according to claim 1, wherein the notification given to the user of the electronic device includes a notification indicating that the electronic device is being charged.
[Claim 6]
6. The electronic device control device according to claim 1, wherein the notification given to the user of the electronic device includes a notification given temporarily at a specific timing.
[Claim 7]
7. The control device for an electronic device according to claim 1, wherein the processing unit causes the light-emitting element to emit light for notification in an emission pattern corresponding to the type of notification that the electronic device makes to the user.
[Claim 8]
The control device for an electronic device described in any one of claims 1 to 7, characterized in that the processing unit causes the light-emitting element to emit light for notification in a light-emitting pattern that corresponds to the type of notification that the electronic device makes to the user and that differs in either flashing form or light color.
[Claim 9]
A method for controlling an electronic device, comprising: causing a light-emitting element provided in the electronic device, which emits light for obtaining information, to emit light for notifying a user of the electronic device.
[Claim 10]
A control program that causes a computer to realize a control function that causes a light-emitting element provided in an electronic device that emits light for obtaining information to emit an alert light to notify the user of the electronic device.
[Claim 11]
a device body provided with a light emitting element that emits light for acquiring information;
a processing unit that causes the light emitting element to emit light for notifying a user;
An electronic device comprising:

1 Electronic device 2 Device body 2a Back cover 3 Display section 7 Projection section 8 Light receiving section 9a, 9b, 9c Light emitting section 11 CPU
12 ROM
13 RAM
20 Pulse wave sensor 21a First LED
21b Second LED
21c Third LED
22 Photodiode 23 Power supply unit

Claims (6)

An electronic device including a light-emitting element and a control unit,
The light-emitting element is
a light-emitting element that emits light to allow the light-receiving element to acquire information;
an optical sensor for detecting biological information of a user wearing the electronic device, the optical sensor being included together with the light receiving element;
The control unit
If the amount of light received by the light receiving element is equal to or less than a threshold, it is determined that the electronic device is not being worn by the user , and the light emitting element is caused to emit light in a first pattern for acquiring biometric information of the user;
If the amount of light received by the light receiving element exceeds a threshold, it is determined that the electronic device is being worn by a user, and the light emitting element is caused to emit light in a second pattern different from the first pattern for notifying the user.
An electronic device characterized by: The electronic device according to claim 1 , wherein the notification given to the user of the electronic device includes a notification given temporarily at a specific timing. The electronic device according to claim 1 , wherein the control unit causes the light emitting element to emit light for notification in a light emitting pattern corresponding to a type of notification that the electronic device will make to a user. The electronic device according to claim 1, characterized in that the control unit causes the light-emitting element to emit light for notification in a light-emitting pattern that corresponds to the type of notification that the electronic device makes to the user and that differs in either blinking form or light color. A method for controlling an electronic device including a light-emitting element and a control unit,
The light-emitting element is
a light-emitting element that emits light to allow the light-receiving element to acquire information;
an optical sensor for detecting biological information of a user wearing the electronic device, the optical sensor being included together with the light receiving element;
If the amount of light received by the light receiving element is equal to or less than a threshold, it is determined that the electronic device is not being worn by the user, and the light emitting element is caused to emit light in a first pattern for acquiring biometric information of the user;
If the amount of light received by the light receiving element exceeds a threshold, it is determined that the electronic device is being worn by a user, and the light emitting element is caused to emit light in a second pattern different from the first pattern for notifying the user.
A method for controlling an electronic device. An electronic device comprising a light-emitting element and a control unit, wherein the light-emitting element is a light-emitting element that emits light to cause a light-receiving element to acquire information, and a computer of the electronic device, which is included together with the light-receiving element in an optical sensor that detects biological information of a user wearing the electronic device ,
If the amount of light received by the light receiving element is equal to or less than a threshold, it is determined that the electronic device is not being worn by the user, and the light emitting element is caused to emit light in a first pattern for acquiring biometric information of the user;
If the amount of light received by the light receiving element exceeds a threshold, it is determined that the electronic device is being worn by a user, and the light emitting element is caused to emit light in a second pattern different from the first pattern for notifying the user.
A control program comprising: