JP6778656B2 - Electronic equipment, sensitivity correction method and sensitivity correction program - Google Patents

Description

The present application relates to electronic devices, sensitivity correction methods and sensitivity correction programs.

Conventionally, there is a device that updates a reference value of a proximity sensor at a predetermined timing for the purpose of correcting the sensitivity of the proximity sensor.

JP-A-2010-235567

There is room for improvement in the sensitivity correction of conventional proximity sensors.

The electronic device according to one embodiment includes an infrared type proximity sensor, an illuminance sensor provided in the vicinity of the proximity sensor, a storage for storing reference value update conditions used for correcting the detection value of the proximity sensor, and control. It has a part. The control unit determines whether the detection value of the illuminance sensor and the detection value of the proximity sensor satisfy the update condition, and if the result of the determination satisfies the update condition, the control unit updates the reference value.

The sensitivity correction method according to one aspect is an electronic device including a proximity sensor, an illuminance sensor provided in the vicinity of the proximity sensor, and a storage for storing a reference value update condition used for correcting the detection value of the proximity sensor. This is a sensitivity correction method to be executed. The sensitivity correction method determines whether the detection value of the illuminance sensor and the detection value of the proximity sensor satisfy the update condition, and if the result of the determination satisfies the update condition, the step of updating the reference value. including.

The sensitivity correction program according to one aspect is an electronic device including a proximity sensor, an illuminance sensor provided in the vicinity of the proximity sensor, and a storage for storing a reference value update condition used for correcting the detection value of the proximity sensor. Determines whether the detection value of the illuminance sensor and the detection value of the proximity sensor satisfy the update condition, and if the result of the determination satisfies the update condition, the step of updating the reference value is executed.

FIG. 1 is a block diagram showing an example of a functional configuration of a smartphone according to an embodiment. FIG. 2 is a diagram showing an example of calibration execution conditions according to the embodiment. FIG. 3 is a front view of the smartphone according to the embodiment. FIG. 4 is a diagram schematically showing a cross section taken along the line II shown in FIG. FIG. 5 is a diagram showing the relationship between the output of the proximity sensor and the detection distance according to the embodiment. FIG. 6 is a flowchart showing an example of processing by the smartphone according to the embodiment. FIG. 7 is a diagram showing an example of a user interface according to the embodiment. FIG. 8 is a diagram showing an example of calibration execution conditions according to another embodiment. FIG. 9 is a flowchart showing an example of processing by a smartphone according to another embodiment. FIG. 10 is a flowchart showing an example of processing by a smartphone according to another embodiment. FIG. 11 is a flowchart showing an example of processing by a smartphone according to another embodiment.

The embodiments according to the present application will be described in detail with reference to the drawings. In the following description, similar components may be designated by the same reference numerals. Further, duplicate description may be omitted. In the following, a smartphone will be taken up and described as an example of the electronic device according to the present application.

FIG. 1 is a block diagram showing an example of a functional configuration of a smartphone according to an embodiment. In the following description, similar components may be designated by the same reference numerals. In the following description, duplicate description may be omitted. In the following description, the smartphone 1 may be referred to as "own machine".

As shown in FIG. 1, the smartphone 1 includes a touch screen display 2, a button 3, an illuminance sensor 4, a proximity sensor 5, a communication unit 6, a receiver 7, a microphone 8, a storage 9, and a controller 10. A speaker 11, a camera 12, a camera 13, a connector 14, an acceleration sensor 15, an illuminance sensor 16, an angular velocity sensor 17, a pressure sensor 18, and a GPS receiver 19.

The touch screen display 2 has a display 2A and a touch screen 2B. The display 2A and the touch screen 2B may be located, for example, overlapping, side by side, or apart. When the display 2A and the touch screen 2B are positioned so as to overlap each other, for example, one or more sides of the display 2A may not be along any side of the touch screen 2B.

The display 2A includes a liquid crystal display (LCD: Liquid Crystal Display), an organic EL display (OELD: Organic Electro-Luminence Display), an inorganic EL display (IELD: Organic Electro-Luminence Display), and the like. The display 2A displays objects such as characters, images, symbols, and figures on the screen. The screen including the objects displayed by the display 2A includes a screen called a lock screen, a screen called a home screen, and an application screen displayed while the application is being executed. The home screen may be referred to as a desktop, a standby screen, an idle screen, a standard screen, an application list screen, or a launcher screen.

The touch screen 2B detects contact or proximity of a finger, pen, stylus pen, or the like to the touch screen 2B. The touch screen 2B can detect a position on the touch screen 2B when a plurality of fingers, pens, stylus pens, or the like touch or approach the touch screen 2B. In the following description, a position where a plurality of fingers, pens, stylus pens, etc. detected by the touch screen 2B are in contact with or close to the touch screen 2B is referred to as a “detection position”. The touch screen 2B notifies the controller 10 of the contact or proximity of the finger to the touch screen 2B together with the detection position. The touch screen 2B may notify the controller 10 of the detection of contact or proximity with the notification of the detection position. The touch screen display 2 having the touch screen 2B can execute the operation that the touch screen 2B can perform. In other words, the operation performed by the touch screen 2B may be performed by the touch screen display 2.

The controller 10 has at least one of the contact or proximity detected by the touch screen 2B, the detection position, the change in the detection position, the duration of the contact or proximity, the interval at which the contact or proximity is detected, and the number of times the contact is detected. The type of gesture is determined based on the above. The smartphone 1 having the controller 10 can execute the operation that the controller 10 can perform. In other words, the operation performed by the controller 10 may be performed by the smartphone 1. Gesture is an operation performed on the touch screen 2B using a finger. The operation performed on the touch screen 2B may be performed by the touch screen display 2 having the touch screen 2B. Gestures that the controller 10 determines via the touch screen 2B include, for example, touch, long touch, release, swipe, tap, double tap, long tap, drag, flick, pinch in, and pinch out. Not limited to.

The detection method of the touch screen 2B may be any method such as a capacitance method, a resistance film method, a surface acoustic wave method, an infrared method, and a load detection method.

The button 3 receives an operation input from the user. The number of buttons 3 may be singular or plural.

The illuminance sensor 4 detects the illuminance. The illuminance is a value of a luminous flux incident on a unit area of the measurement surface of the illuminance sensor 4. The illuminance sensor 4 is used, for example, for adjusting the brightness of the display 2A.

The proximity sensor 5 detects the presence of a nearby object in a non-contact manner. The proximity sensor 5 has a light emitting element that irradiates infrared rays and a light receiving element that receives reflected light of infrared rays emitted from the light emitting element. The illuminance sensor 4 and the proximity sensor 5 may be configured as one sensor.

The communication unit 6 communicates wirelessly. The wireless communication standards supported by the communication unit 6 include, for example, cellular phone communication standards such as 2G, 3G, 4G, and 5G, and short-range wireless communication standards. Communication standards for cellular phones include, for example, LTE (Long Term Evolution), W-CDMA (registered trademark) (Wideband Code Division Multiple Access), CDMA2000, PDC (Personal Digital Cellular), GSM (registered trademark), and GSM (registered trademark). Mobile communications), PHS (Personal Handy-phone System), and the like. Examples of short-range wireless communication standards include WiMAX (registered trademark) (Worldwide interoperability for Microwave Access), IEEE802.11, Bluetooth (registered trademark), Infrared Data Association (registered trademark), IrDA (Infrared Data Association), and "Infrared Data Association". ), WPAN (Wireless Personal Area Network) and the like. The communication unit 6 may support one or more of the above-mentioned communication standards.

The receiver 7 outputs a sound signal transmitted from the controller 10 as sound. The microphone 8 converts the input user's voice or the like into a sound signal and transmits it to the controller 10.

The storage 9 stores programs and data. The storage 9 may be used as a work area for temporarily storing the processing result of the controller 10. The storage 9 may include any non-transitory storage medium such as a semiconductor storage medium and a magnetic storage medium. The storage 9 may include a plurality of types of storage media. The storage 9 may include a combination of a storage medium such as a memory card, an optical disk, or a magneto-optical disk, and a reader of the storage medium. The storage 9 may include a storage device used as a temporary storage area such as a RAM (Random Access Memory).

The program stored in the storage 9 includes an application executed in the foreground or the background, and a support program (not shown) that supports the operation of the application. When the application is executed in the foreground, for example, the screen related to the application is displayed on the display 2A. The support program includes, for example, an OS (Operating System). The program may be installed in the storage 9 via wireless communication by the communication unit 6 or a non-transient storage medium.

The storage 9 can store the control program 9A, the calibration program 9B, the illuminance sensor data 9C, the proximity sensor data 9D, the acceleration sensor data 9E, the calibration execution condition 9F, the setting data 9Z, and the like.

The control program 9A can provide functions for realizing processing related to various operations of the smartphone 1. The function provided by the control program 9A includes a function of adjusting the brightness of the display 2A based on the detection result of the illuminance sensor 4. The function provided by the control program 9A includes a function of invalidating the operation on the touch screen 2B based on the detection result of the proximity sensor 5. The function provided by the control program 9A includes a function of realizing a telephone call by controlling the communication unit 6, the receiver 7, the microphone 8, and the like. The function provided by the control program 9A includes a function of controlling the shooting process of the camera 12 and the camera 13. The function provided by the control program 9A includes a function of controlling communication with an external device connected via the connector 14. The function provided by the control program 9A includes a function of performing various controls such as changing the information displayed on the display 2A according to the gesture determined based on the detection result of the touch screen 2B. The function provided by the control program 9A includes a function of detecting the movement, stop, etc. of the user carrying the smartphone 1 based on the detection result of the acceleration sensor 15. The function provided by the control program 9A includes a function of executing processing based on the current position based on a signal acquired from the GPS receiver.

The calibration program 9B describes the reference value (hereinafter, appropriately referred to as "offset") used for correcting the detection value of the proximity sensor 5 on the condition that the illuminance sensor data 9C and the proximity sensor data 9D satisfy the calibration execution condition 9F. Can provide the ability to update). The calibration program 9B extracts data corresponding to the infrared component and data corresponding to the visible light component from a plurality of data samples included in the illuminance sensor data 9C, and corresponds to the data corresponding to the infrared component and the visible light component. It is possible to provide a function of determining whether the ratio with the data is below the threshold. The calibration program 9B can provide a function of calculating the average value of a plurality of data samples included in the proximity sensor data 9D and determining whether the calculated average value is equal to or less than the threshold value. The offset update process by the calibration program 9B is started by, for example, a user operation. The calibration program 9B can provide a user interface related to calibration.

The illuminance sensor data 9C is all the data of the detected values detected by the illuminance sensor 4. The proximity sensor data 9D is all the data of the detected values detected by the proximity sensor 5. The acceleration sensor data 9E is all the data of the detected values detected by the acceleration sensor 15. The acceleration sensor data 9E includes the direction and magnitude of the acceleration acting on the smartphone 1. The acceleration sensor data 9E may include all measurement results acquired by the acceleration sensor 15. For example, the acceleration sensor data 9E may include an acceleration pattern composed of time-series changes in the direction and magnitude of acceleration. For example, when the acceleration sensor 15 is a three-axis type that detects acceleration in the x-axis direction, the y-axis direction, and the z-axis direction, the acceleration sensor data 9E shows the direction and magnitude of the acceleration in each axis, and the three axes. It may include a composite vector that combines accelerations.

The calibration execution condition 9F includes a condition for updating the offset of the proximity sensor 5. FIG. 2 is a diagram showing an example of calibration execution conditions according to the embodiment. In the example shown in FIG. 2, it is stipulated that calibration is performed when the detection value d1 of the illuminance sensor 4 is equal to or less than the threshold value th1 and the detection value d2 of the proximity sensor 5 is equal to or less than the threshold value th2. On the other hand, in the example shown in FIG. 2, it is stipulated that the calibration is not executed when the detection value d1 of the illuminance sensor 4 is larger than the threshold value th1 and the detection value d2 of the proximity sensor 5 is larger than the threshold value th2.

That is, by incorporating the case where the detection value d1 of the illuminance sensor 4 is larger than the threshold value th1 as one of the necessary conditions for not performing calibration, for example, an infrared type such as an overly bright place such as outdoors in a sunny day. It is possible to avoid performing the calibration in a place unsuitable for calibrating the proximity sensor 5. By incorporating the case where the detection value d2 of the proximity sensor 5 is larger than the threshold value th2 as one of the necessary conditions for not performing calibration, for example, an infrared proximity sensor such as a situation where there is an obstacle above the proximity sensor 5. Calibration in a situation unsuitable for the calibration of 5 can be avoided. The detection value d1 of the illuminance sensor 4 includes, for example, the ratio of the data corresponding to the infrared component and the data corresponding to the visible light component extracted from a plurality of data samples included in the illuminance sensor data 9C. That is, it is possible to identify an overly bright place such as outdoors in a sunny day based on the ratio of the infrared component contained in the visible light. The detection value d2 of the proximity sensor 5 includes an average value of a plurality of data samples included in the proximity sensor data 9D. The calibration execution condition 9F is an example of an update condition.

The setting data 9Z includes information on various settings related to the operation of the smartphone 1.

The smartphone 1 may cooperate with the cloud storage via the communication unit 6 to access the files and data stored in the cloud storage. The cloud storage may store a part or all of the programs and data stored in the storage 9.

The controller 10 includes an arithmetic processing unit. The arithmetic processing unit includes, for example, a CPU (Central Processing Unit), a System (System-on-a-Chip), an MCU (MicroControl Unit), an FPGA (Field-Programmable Gate Array), and a coprocessor. Not limited. The controller 10 comprehensively controls the operation of the smartphone 1 to realize various functions.

Specifically, the controller 10 executes an instruction included in the program stored in the storage 9 while referring to the data stored in the storage 9 as necessary. Then, the controller 10 controls the functional unit according to the data and the instruction, thereby realizing various functions. The functional unit includes, but is not limited to, for example, a display 2A, a communication unit 6, a microphone 8, a speaker 11, and a GPS receiver 19. The controller 10 may change the control according to the detection result of the detection unit. The detection unit includes, for example, a touch screen 2B, a button 3, an illuminance sensor 4, a proximity sensor 5, a microphone 8, a camera 12, a camera 13, an acceleration sensor 15, an orientation sensor 16, an angular velocity sensor 17, and a pressure sensor 18. Not limited to these.

By executing the control program 9A, the controller 10 can realize various controls related to the operation of the smartphone 1.

By executing the calibration program 9B, the controller 10 can realize a process of setting the offset of the proximity sensor 5 on condition that the calibration execution condition 9F is satisfied. For example, the controller 10 extracts data corresponding to the infrared component and data corresponding to the visible light component from a plurality of data samples included in the illuminance sensor data 9C, and corresponds to the data corresponding to the infrared component and the visible light component. By calculating the ratio with the data and determining whether the calculated ratio is equal to or less than the threshold value, it is possible to execute the process of determining whether the calibration execution condition 9F is satisfied. The controller 10 can, for example, calculate an average value of a plurality of data samples included in the proximity sensor data 9D, and execute a process of determining whether the calculated average value is equal to or less than a threshold value.

The speaker 11 outputs a sound signal transmitted from the controller 10 as sound. The speaker 11 is used, for example, to output a ringtone and music. One of the receiver 7 and the speaker 11 may also serve as the other function.

The camera 12 and the camera 13 convert the captured image into an electric signal. The camera 12 is an in-camera that captures an object facing the display 2A. The camera 13 is an out-camera that captures an object facing the opposite surface of the display 2A. The camera 12 and the camera 13 may be mounted on the smartphone 1 in a functionally and physically integrated state as a camera unit that can be used by switching between an in-camera and an out-camera.

The connector 14 is a terminal to which another device is connected. The connector 14 includes USB (Universal Serial Bus), HDMI (registered trademark) (High-Definition Multimedia Interface), MHL (Mobile High-definition Link), Light Peak (Light Peak), Thunderbolt (Light Peak), Thunderbolt (Light Peak) It may be a general-purpose terminal such as a LAN connector (Local Area Network connector) or an earphone / microphone connector. The connector 14 may be a specially designed terminal such as a Dock connector. Devices connected to the connector 14 include, but are not limited to, for example, chargers, external storage, speakers, communication devices, and information processing devices.

The acceleration sensor 15 can detect the direction and magnitude of the acceleration acting on the smartphone 1. As one example of the embodiment, a three-axis type acceleration sensor 15 that detects acceleration in the X-axis direction, the Y-axis direction, and the Z-axis direction can be adopted. The acceleration sensor 15 includes a piezoresistive type, a capacitance type, a piezoelectric element type (piezoelectric type), a MEMS (Micro Electro Mechanical Systems) type based on a heat detection type, and a servo type that restores an operated movable coil by a feedback current. Alternatively, it can be configured by a strain gauge type or the like. The acceleration sensor 15 sends the detection result to the controller 10. The controller 10 can execute various controls based on the detection result of the acceleration sensor 15. For example, when the gravity acting on the smartphone 1 is output from the acceleration sensor 15 as an acceleration, the controller 10 can execute the control reflecting the direction of gravity acting on the smartphone 1.

The azimuth sensor 16 can detect the direction of the geomagnetism. The azimuth sensor 16 sends the detection result to the controller 10. The controller 10 can execute various controls based on the detection result of the directional sensor 16. For example, the controller 10 can specify the direction (direction) of the smartphone 1 from the direction of the geomagnetism and execute control reflecting the direction of the specified smartphone 1.

The angular velocity sensor 17 can detect the angular velocity of the smartphone 1. The angular velocity sensor 17 sends the detection result to the controller 10. The controller 10 can execute various controls based on the detection result of the angular velocity sensor 17. For example, the controller 10 can realize control that reflects the rotation of the smartphone 1 based on the presence or absence of the angular velocity output from the angular velocity sensor 17.

The controller 10 is not limited to the case where the detection results of the acceleration sensor 15, the direction sensor 16, and the angular velocity sensor 17 are used individually, and each detection result can be used in combination.

The barometric pressure sensor 18 can detect the barometric pressure acting on the smartphone 1. The detection result of the barometric pressure sensor 18 may include the amount of change in barometric pressure per unit time. The amount of change in atmospheric pressure may be an absolute value or a value obtained by accumulating a scalar amount. Any time may be set as the unit time. The barometric pressure sensor 18 sends the detection result to the controller 10.

The GPS receiver 19 can receive radio signals in a predetermined frequency band from GPS satellites. The GPS receiver performs demodulation processing of the received radio wave signal and sends the processed signal to the controller 10.

The smartphone 1 may include a vibrator. The vibrator vibrates a part or the whole of the smartphone 1. The vibrator has, for example, a piezoelectric element, an eccentric motor, or the like in order to generate vibration. In addition to the above-mentioned sensors, the smartphone 1 may include a temperature sensor, a humidity sensor, a pressure sensor, and the like. The smartphone 1 implements a functional unit that is naturally used to maintain the function of the smartphone 1, such as a battery, and a detection unit that is naturally used to realize control of the smartphone 1.

FIG. 3 is a front view of the smartphone according to the embodiment. In the following description, the front surface of the smartphone is a surface facing or contacting the user who uses the smartphone 1, and may be described as "front surface" and "display surface" in the following description. As shown in FIG. 3, the smartphone 1 is provided with a protective sheet 21 that covers the entire surface of the display surface on the display surface side on which the display 2A, the proximity sensor 5, the camera 12, and the like are provided. That is, the protective sheet 21 is superposed and installed directly above the infrared irradiation port of the proximity sensor 5, that is, so as to cover the entire infrared irradiation port. The protective sheet 21 has a predetermined adhesive layer and is configured to be freely reattachable by the user. The protective sheet 21 prevents damage to the display 2A from impacts such as dropping.

FIG. 4 is a diagram schematically showing a cross section taken along the line II shown in FIG. FIG. 3 shows a cross section when the periphery of the installation position of the proximity sensor is cut by a plane parallel to the xz plane. As shown in FIG. 3, a protective sheet 21, an adhesive layer 22, and tempered glass 23 are installed above the proximity sensor 5. The protective sheet 21 is attached to the tempered glass 23 by the adhesive layer 22. There is an air gap AG1 between the proximity sensor 5 and the tempered glass 23. The infrared rays L1 emitted from the proximity sensor 5 are reflected not a little on the surfaces of the protective sheet 21, the adhesive layer 22, and the tempered glass 23 before reaching the proximity detection object, and become reflected light L2 to become the proximity sensor 5. Is received by. As described above, the air gap AG1, the protective sheet 21, the adhesive layer 22, and the tempered glass 23 affect the transmittance of the infrared ray L1 emitted from the proximity sensor 5. As shown in FIG. 3, the protective sheet 21 covers the entire surface of the infrared irradiation port of the proximity sensor 5, so that the reflected light L2 from the protective sheet 21, the adhesive layer 22, and the tempered glass 23 is detected by the proximity sensor 5. It is necessary to set the offset of the proximity sensor 5 so that the distance to the detection target reacts at a desired distance in consideration of the detected value (hereinafter, appropriately referred to as “crosstalk value”). ..

FIG. 5 is a diagram showing the relationship between the output of the proximity sensor and the detection distance according to the embodiment. 5A shown in FIG. 5 shows the output of the proximity sensor 5. 5B shown in FIG. 5 indicates, for example, an output corresponding to the crosstalk value detected by the proximity sensor 5 shown in FIGS. 3 and 4. 5C shown in FIG. 5 shows, for example, the permissible range of change in the crosstalk value of the proximity sensor 5 when the detection distance is set to 30 mm. For example, if the crosstalk value becomes large for some reason and exceeds the allowable change width (5C), the proximity sensor will not respond at a desired detection distance (for example, 30 mm).

Since the protective sheet 21 is configured to be freely reattachable by the user, for example, when the protective sheet 21 is reattached, the material of the reattached protective sheet 21 and the material of the adhesive layer 22 The crosstalk value may change depending on the sticking condition of the protective sheet 21 and the tempered glass 23. Therefore, it is necessary to update the offset again after the protective sheet 21 is replaced. Therefore, the smartphone 1 according to the embodiment proposes a method of calibrating the proximity sensor 5 when the protective sheet 21 is replaced.

An example of processing by the smartphone 1 according to the embodiment will be described with reference to FIGS. 6 and 7. FIG. 6 is a flowchart showing an example of processing by the smartphone according to the embodiment. FIG. 7 is a diagram showing an example of a user interface according to the embodiment. The process shown in FIG. 6 is realized by the controller 10 executing the calibration program 9B. The process shown in FIG. 10 is also executed in a mode in which power supply is partially controlled, that is, a so-called power saving mode, as long as the smartphone 1 can operate.

As shown in FIG. 6, the controller 10 determines whether or not the sensitivity correction start instruction of the proximity sensor 5 has been given (step S101). Specifically, as shown in FIG. 7, when the smartphone 1 accepts an operation for "proximity sensor sensitivity correction" on the various setting screens SC1 displayed on the display 2A (see "U1" in FIG. 7), the proximity sensor The sensitivity correction screen SC2 is displayed on the display 2A (see “U2” in FIG. 7). Then, when the smartphone 1 accepts the operation for "start" on the proximity sensor sensitivity correction screen SC2 (see "U2" in FIG. 7), it determines that the sensitivity correction start instruction of the proximity sensor 5 has been given.

As a result of the determination, the controller 10 acquires the illuminance sensor data 9C (step S102) when the sensitivity correction start instruction of the proximity sensor 5 is given (step S101, Yes). Subsequently, the controller 10 acquires the proximity sensor data 9D (step S103).

The controller 10 determines whether or not the illuminance sensor data 9C and the proximity sensor data 9D satisfy the calibration execution condition 9F (step S104).

As a result of the determination, when the illuminance sensor data 9C and the proximity sensor data 9D satisfy the calibration execution condition 9F (steps S104, Yes), the controller 10 updates the offset of the proximity sensor 5 (step S105).

Subsequently, the controller 10 displays a message indicating that the sensitivity correction of the proximity sensor 5 has been successful (step S106), and ends the process shown in FIG. For example, as shown in FIG. 7, the controller 10 displays a message on the processing result screen SC3 displayed on the display 2A to the effect that the sensitivity correction of the proximity sensor 5 has been successful (see “U3” in FIG. 7).

In step S104, when the result of the determination is that the illuminance sensor data 9C and the proximity sensor data 9D do not satisfy the calibration execution condition 9F (steps S104, No), the controller 10 has failed to correct the sensitivity of the proximity sensor 5. Is displayed (step S107), and the process shown in FIG. 6 is terminated. For example, as shown in FIG. 7, the controller 10 displays a message indicating that the sensitivity correction of the proximity sensor 5 has failed on the processing result screen SC4 displayed on the display 2A (see “U4” in FIG. 7).

In step S101, if as a result of the determination, there is no sensitivity correction start instruction of the proximity sensor 5 (steps S101, No), the controller 10 ends the process shown in FIG.

In the above embodiment, the smartphone 1 can detect the calibration execution operation by the user who has replaced the protective sheet 21, calibrate the proximity sensor 5, and update the offset of the proximity sensor 5. Therefore, the smartphone 1 can prevent a malfunction of the proximity sensor 5 due to, for example, replacement of the protective sheet 21.

In the above embodiment, the smartphone 1 has described an example of notifying the processing result of sensitivity correction by displaying a message on the processing result screen SC3 and the processing result screen SC4 shown in FIG. 7, but the present invention is limited to this. Instead, notification may be made by a method such as pop-up display, banner display, icon display on the status bar, or voice output of a message.

(Other embodiments)
In the above embodiment, an example of detecting the calibration execution operation by the user and executing the offset update has been described, but in the following embodiments, the automatic offset update will be described.

The functional configuration of the smartphone 1 according to the other embodiment is basically the same as that of the above embodiment, except that the points described below are different.

After updating the offset, the calibration program 9B determines whether or not the detected values of the illuminance sensor 4 and the proximity sensor 5 and the detected values of the acceleration sensor 15 satisfy the calibration execution condition 9F at a predetermined cycle. As a result of the determination, when the calibration execution condition 9F is satisfied, the function of updating the offset can be provided. The predetermined period is set to an arbitrary time, for example, for the purpose of periodically reviewing the offset of the proximity sensor. Any time may be set for the predetermined cycle.

FIG. 8 is a diagram showing an example of calibration execution conditions according to another embodiment. In the example shown in FIG. 8, the detection value d1 of the illuminance sensor 4 is the threshold value th1 or less, the detection value d2 of the proximity sensor 5 is the threshold value th2 or less, and the detection value d3 of the acceleration sensor 15 is the threshold value th3 or less. If so, it is specified to perform calibration. On the other hand, in the example shown in FIG. 8, the detection value d1 of the illuminance sensor 4 is larger than the threshold value th1, the detection value d2 of the proximity sensor 5 is larger than the threshold value th2, and the detection value d3 of the acceleration sensor 15 is larger than the threshold value th3. If it is large, it is stipulated that calibration should not be performed.

That is, in addition to the example shown in FIG. 2, the case where the detection value d3 of the acceleration sensor 15 is larger than the threshold value th3 is incorporated as one of the necessary conditions for not executing the calibration, so that the smartphone 1 can be moved by holding it in the hand. It is possible to avoid performing the calibration in a situation where the smartphone 1 is unstable and is not suitable for the calibration of the infrared type proximity sensor 5. The calibration execution condition 9F is an example of an update condition.

By executing the calibration program 9B, the controller 10 satisfies the calibration execution condition 9F in the detection values of the illuminance sensor 4 and the proximity sensor 5 and the detection values of the acceleration sensor 15 in a predetermined cycle after the offset is updated. When it is determined whether or not to perform the calibration, and as a result of the determination, the calibration execution condition 9F is satisfied, the process of updating the offset is realized.

FIG. 9 is a flowchart showing an example of processing by a smartphone according to another embodiment. The process shown in FIG. 9 is realized by the controller 10 executing the calibration program 9B. The process shown in FIG. 9 is also executed in the mode of partially controlling the power supply, that is, the so-called power saving mode, as long as the smartphone 1 can operate.

As shown in FIG. 9, the controller 10 determines whether or not the execution cycle of the sensitivity correction of the proximity sensor 5 has been reached (step S201).

As a result of the determination, when the execution cycle of the sensitivity correction has been reached (step S201, Yes), the controller 10 acquires the illuminance sensor data 9C (step S202). Subsequently, the controller 10 acquires the proximity sensor data 9D (step S203). Subsequently, the controller 10 acquires the acceleration sensor data 9E (step S204).

The controller 10 determines whether or not the illuminance sensor data 9C, the proximity sensor data 9D, and the acceleration sensor data 9E satisfy the calibration execution condition 9F (step S205).

As a result of the determination, when the illuminance sensor data 9C, the proximity sensor data 9D, and the acceleration sensor data 9E satisfy the calibration execution condition 9F (steps S205, Yes), the controller 10 updates the offset of the proximity sensor 5 (step). S206).

On the other hand, as a result of the determination, when the illuminance sensor data 9C, the proximity sensor data 9D, and the acceleration sensor data 9E do not satisfy the calibration execution condition 9F (steps S205, No), the controller 10 fails to correct the sensitivity of the proximity sensor 5. A message to that effect is displayed (step S207), and the process shown in FIG. 9 ends.

In step S201, if the result of the determination is that the sensitivity correction is not executed (steps S201, No), the controller 10 ends the process shown in FIG.

In the process shown in FIG. 9, the smartphone 1 may execute a step of displaying a message indicating that the sensitivity correction is successful, as shown in FIGS. 6 and 7.

According to the other embodiment described above, since the smartphone 1 periodically updates the offset of the proximity sensor 5, the sensitivity of the proximity sensor 5 can be maintained as much as possible.

The update of the offset of the proximity sensor 5 may be executed at various triggers other than the predetermined cycle. In the following, another example regarding the timing of updating the offset of the proximity sensor 5 will be described with reference to FIGS. 10 and 11. 10 and 11 are flowcharts showing an example of processing by a smartphone according to another embodiment.

FIG. 10 shows an example of a process of updating the offset of the proximity sensor based on the change of the crosstalk value of the proximity sensor 5.

As shown in FIG. 10, the controller 10 determines whether the crosstalk value of the proximity sensor 5 is equal to or greater than the threshold value (step S301). For example, the controller 10 estimates the crosstalk value from the output of the proximity sensor 5, and the difference (change amount) between the estimated crosstalk value and the offset (initial setting value at the time of product shipment) being set is a threshold value (for example). , The change allowable width 5C (see FIG. 5)) or more is determined. The crosstalk value when the product is used at the user's hand after shipment can be estimated from, for example, the average output when the proximity sensor is not responding (when a predetermined distance is not detected). The average may be calculated based on the output of the proximity sensor detected within any time period.

As a result of the determination, when the crosstalk value is equal to or greater than the threshold value (step S301, Yes), the controller 10 acquires the illuminance sensor data 9C (step S302). Subsequently, the controller 10 acquires the proximity sensor data 9D (step S303). Subsequently, the controller 10 acquires the acceleration sensor data 9E (step S304).

The controller 10 determines whether or not the illuminance sensor data 9C, the proximity sensor data 9D, and the acceleration sensor data 9E satisfy the calibration execution condition 9F (step S305).

As a result of the determination, when the illuminance sensor data 9C, the proximity sensor data 9D, and the acceleration sensor data 9E satisfy the calibration execution condition 9F (steps S305, Yes), the controller 10 updates the offset of the proximity sensor 5 (step). S306).

On the other hand, as a result of the determination, when the illuminance sensor data 9C, the proximity sensor data 9D, and the acceleration sensor data 9E do not satisfy the calibration execution condition 9F (steps S305, No), the controller 10 fails to correct the sensitivity of the proximity sensor 5. A message to that effect is displayed (step S307), and the process shown in FIG. 10 is terminated.

In step S301, when the result of the determination is that the crosstalk value is not equal to or greater than the threshold value (steps S301, No), the controller 10 ends the process shown in FIG.

Also in the process shown in FIG. 10, the smartphone 1 may execute a step of displaying a message indicating that the sensitivity correction is successful, as shown in FIGS. 6 and 7.

For example, by using the smartphone 1, the surface of the protective sheet 21 is damaged and the light transmittance of the protective sheet 21 changes, or the adhesive layer 22 deteriorates due to heat or light, and the adhesive layer 22 deteriorates. It is conceivable that the light transmittance of the smartphone may change. In the example shown in FIG. 10, since the smartphone 1 monitors the change in the crosstalk value of the proximity sensor 5, for example, damage to the protective sheet 21 and deterioration of the adhesive layer 22 are manifested in the form of a change in the crosstalk value. You can handle the case. Since the smartphone 1 can update the offset of the proximity sensor 5 according to the change of the crosstalk value, it is easy to manage the sensitivity of the proximity sensor 5 in an effective state.

FIG. 11 shows an example of a process of updating the offset of the proximity sensor at the timing when the fingerprint authentication is executed.

As shown in FIG. 11, the controller 10 determines whether fingerprint authentication has been executed (step S401).

As a result of the determination, the controller 10 acquires the illuminance sensor data 9C when fingerprint authentication is executed (step S401, Yes) (step S402). Subsequently, the controller 10 acquires the proximity sensor data 9D (step S403). Subsequently, the controller 10 acquires the acceleration sensor data 9E (step S404).

The controller 10 determines whether or not the illuminance sensor data 9C, the proximity sensor data 9D, and the acceleration sensor data 9E satisfy the calibration execution condition 9F (step S405).

As a result of the determination, when the illuminance sensor data 9C, the proximity sensor data 9D, and the acceleration sensor data 9E satisfy the calibration execution condition 9F (steps S405 and Yes), the controller 10 updates the offset of the proximity sensor 5 (step). S406).

On the other hand, as a result of the determination, when the illuminance sensor data 9C, the proximity sensor data 9D, and the acceleration sensor data 9E do not satisfy the calibration execution condition 9F (steps S405 and No), the controller 10 fails to correct the sensitivity of the proximity sensor 5. A message to that effect is displayed (step S407), and the process shown in FIG. 11 is terminated.

In step S401, if the result of the determination is that fingerprint authentication has not been executed (steps S401, No), the controller 10 ends the process shown in FIG.

Also in the process shown in FIG. 11, the smartphone 1 may execute a step of displaying a message indicating that the sensitivity correction has been successful, as shown in FIGS. 6 and 7.

In the process shown in FIG. 11, the smartphone 1 may exclude the proximity sensor data 9D from the determination target of the calibration execution condition 9F. That is, when fingerprint authentication is executed on the smartphone 1, it is assumed that there is no obstacle on the upper part of the proximity sensor 5, so that the proximity sensor is an index for determining whether or not there is an obstacle on the upper part of the proximity sensor 5. The purpose is to exclude data 9D from the beginning.

In order to fully and clearly disclose the technology according to the attached claims, characteristic embodiments have been described. However, the accompanying claims are not limited to the above embodiments, and all modifications and alternatives that can be created by those skilled in the art within the scope of the basic matters set forth herein. It should be embodied in a possible configuration.

1 Smartphone 2 Touch screen display 2A Display 2B Touch screen 3 Button 4 Illumination sensor 5 Proximity sensor 6 Communication unit 7 Receiver 8 Microphone 9 Storage 9A Control program 9B Calibration program 9C Illumination sensor data 9D Proximity sensor data 9E Acceleration sensor data 9F Calibration Execution condition 9Z Setting data 10 Controller 11 Speaker 12 Camera 13 Camera 14 Connector 15 Acceleration sensor 16 Orientation sensor 17 Angle speed sensor 18 Pressure sensor 19 GPS receiver

Claims (7)

Infrared proximity sensor and
An illuminance sensor provided in the vicinity of the proximity sensor and
A storage that stores the update condition of the reference value used for correcting the detection value of the proximity sensor, and
Equipped with a control unit
The storage stores as the update condition that the detection value of the illuminance sensor is equal to or less than a predetermined threshold value and the detection value of the proximity sensor is equal to or less than a predetermined threshold value.
The control unit determines whether the detection value of the illuminance sensor and the detection value of the proximity sensor satisfy the update condition.
An electronic device that updates the reference value when the update condition is satisfied as a result of the determination. The control unit
Based on the detection value of the illuminance sensor, the data corresponding to the infrared component and the data corresponding to the visible light component are extracted, and the ratio between the data corresponding to the infrared component and the data corresponding to the visible light component is calculated and calculated. When the ratio is equal to or less than a predetermined threshold value and the detection value of the proximity sensor is equal to or less than a predetermined threshold value, the reference value is updated as satisfying the update condition.
The electronic device according to claim 1. Equipped with an accelerometer
The control unit
After updating the reference value, it is determined at a predetermined cycle whether or not the detection values of the illuminance sensor and the proximity sensor and the detection values of the acceleration sensor satisfy the update conditions, and as a result of the determination, the illuminance sensor The electronic device according to claim 1, wherein when the detection value of the proximity sensor and the detection value of the acceleration sensor satisfy the update condition, the reference value is updated. The control unit
The electronic device according to claim 1, wherein after updating the reference value, the crosstalk value of the proximity sensor is continuously monitored, and when the crosstalk value becomes equal to or higher than a threshold value, the reference value is updated. Equipped with a protective sheet that covers the display surface of the display unit
The electronic device according to claim 1, wherein the protective sheet covers directly above the infrared irradiation port of the proximity sensor. It is a sensitivity correction method to be executed by an electronic device including a proximity sensor, an illuminance sensor provided in the vicinity of the proximity sensor, and a storage for storing a reference value update condition used for correcting the detection value of the proximity sensor.
As satisfying the illuminance detected value of the sensor is below a predetermined is the threshold, and the close the update condition when the detected value is equal to or less than a predetermined be threshold sensors, sensitivity includes the step of updating said reference value Correction method. An electronic device including a proximity sensor, an illuminance sensor provided in the vicinity of the proximity sensor, and a storage for storing a reference value update condition used for correcting a detection value of the proximity sensor.
As satisfying the update condition when the detected value of the illuminance sensor is equal to or less than predetermined is the threshold, and the detection value of the proximity sensor is equal to or less than a predetermined is a threshold to perform the step of updating said reference value Sensitivity correction program.