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WO2018086382A1 - 智能设备的屏幕背光控制系统与方法 - Google Patents

智能设备的屏幕背光控制系统与方法 Download PDF

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Publication number
WO2018086382A1
WO2018086382A1 PCT/CN2017/094327 CN2017094327W WO2018086382A1 WO 2018086382 A1 WO2018086382 A1 WO 2018086382A1 CN 2017094327 W CN2017094327 W CN 2017094327W WO 2018086382 A1 WO2018086382 A1 WO 2018086382A1
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WIPO (PCT)
Prior art keywords
smart device
backlight
capacitance
threshold
display panel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2017/094327
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English (en)
French (fr)
Inventor
周洪梅
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ZTE Corp
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ZTE Corp
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Filing date
Publication date
Application filed by ZTE Corp filed Critical ZTE Corp
Publication of WO2018086382A1 publication Critical patent/WO2018086382A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
    • H04M1/724—User interfaces specially adapted for cordless or mobile telephones
    • H04M1/72448—User interfaces specially adapted for cordless or mobile telephones with means for adapting the functionality of the device according to specific conditions
    • H04M1/72454—User interfaces specially adapted for cordless or mobile telephones with means for adapting the functionality of the device according to specific conditions according to context-related or environment-related conditions
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
    • H04M1/725—Cordless telephones

Definitions

  • the present application relates to, but is not limited to, the field of communications, and in particular to a screen backlight control system and method for a smart device.
  • the power consumption of the screen backlight accounts for a large proportion of the overall power consumption of the mobile phone, and it is necessary to minimize the power consumption of the backlight portion.
  • the following design can be made during the mobile phone call: when the user is close to the screen, the screen backlight is turned off, and the user re-lights the screen when the user finishes the call away from the screen, thereby greatly saving power loss caused by the backlight portion of the screen.
  • the signal may be transmitted through an infrared or laser emitting source, and the distance between the user and the mobile phone is determined according to the infrared or laser data reflected by the human body received by the sensor.
  • the backlight of the screen is controlled to be turned off and on. Thereby achieving proximity detection and backlight control.
  • This requires opening design for proximity detection on the mobile phone panel. The larger the opening is, the better the effect is. However, the large opening size will affect the aesthetics of the mobile phone. If the opening size is small, the receiving signal of the sensor will be weak. The debugging is difficult.
  • proximity detection methods can be used to measure the distance between the user and the phone panel without the need for infrared or laser signal reflection.
  • the present invention provides a screen backlight control system and method for a smart device that can perform backlight control of a mobile phone screen without reflection of infrared or laser signals.
  • the embodiment of the present application provides a screen backlight control system for a smart device, including:
  • a detecting unit configured to: the smart device measures a capacitance of the detection area on the display panel of the smart device through the detecting unit;
  • the determining unit is configured to: compare the capacitance acquired by the detecting unit with the backlight threshold, and issue a first signal when the acquired capacitance is greater than the first backlight threshold, and issue a second signal when the acquired capacitance is less than the second backlight threshold;
  • the control unit is configured to: turn off the backlight of the smart device when receiving the first signal sent by the determining unit, and turn on the backlight of the smart device when receiving the second signal sent by the determining unit.
  • the detection area is located outside of the touch area on the display panel of the smart device.
  • the detection area is located on top of the display panel of the smart device adjacent to the earpiece of the smart device.
  • the first backlight threshold is greater than the second backlight threshold.
  • the method further includes:
  • the startup unit is configured to: when the smart device is in a call state, activate the screen backlight control system.
  • an embodiment of the present invention further provides a method for controlling a screen backlight of a smart device, including:
  • the smart device measures the capacitance of the detection area on the display panel of the smart device through the detecting unit;
  • the determining unit compares the obtained capacitance with the backlight threshold, and when the acquired capacitance is greater than the first backlight threshold, the determining unit sends a first signal, and when the acquired capacitance is less than the second backlight threshold, the determining unit sends the second signal;
  • the smart device backlight When the control unit receives the first signal, the smart device backlight is turned off, and when the control unit receives the second signal, the smart device backlight smart device smart device is turned on.
  • the detection area is located outside of the touch panel of the display panel of the smart device.
  • the detection area is located on top of the display panel of the smart device adjacent to the earpiece of the smart device.
  • the first backlight threshold is greater than the second backlight threshold.
  • the detecting unit, the determining unit, and the control unit are included in a screen backlight control system of a smart device;
  • the smart device Before measuring the capacitance of the display panel of the smart device, it also includes:
  • the screen backlight control system is activated when the smart device is in a call state.
  • the embodiment of the present application further provides a computer readable storage medium storing computer executable instructions that implement the screen backlight control method of the smart device when the computer executable instructions are executed.
  • the capacitor detection technology is used instead of the infrared or laser detection technology to complete the proximity detection of the screen backlight of the smart device during the call, and the printed circuit board (PCB) board on the display panel of the smart device can be used for the capacitance detection.
  • the copper skin on the flexible printed circuit (FPC) board is used as a capacitive sensing device, which converts the distance between the user and the mobile phone into a capacitance change of the detecting unit, so that it is not needed on the display panel of the mobile phone. Open the hole to complete the user proximity detection. Since there is no need to open a hole in the display panel of the mobile phone, the aesthetics of the mobile phone will not be affected.
  • FIG. 1(a) is a schematic block diagram of a screen backlight control system of a smart device according to an embodiment of the present application
  • 1(b) is a schematic block diagram of a screen backlight control system of another smart device according to an embodiment of the present application
  • FIG. 2 is a schematic diagram of the detecting unit 110 on the FPC board
  • 3 is a schematic view of the detecting unit 110 on the PCB
  • FIG. 4(a) is a schematic front structural view of a capacitance detecting unit according to an embodiment of the present application.
  • FIG. 4(b) is a schematic structural view of the back surface of the capacitance detecting unit according to the embodiment of the present application.
  • FIG. 5( a) is a schematic block diagram of a method for controlling a screen backlight of a smart device according to an embodiment of the present application
  • FIG. 5(b) is a diagram showing a method for controlling a screen backlight of another smart device according to an embodiment of the present application; Intentional block diagram;
  • 6(a) is a schematic diagram showing the appearance of a smart phone that performs screen backlight control using an infrared emitting source
  • Fig. 6(b) is a schematic view showing the appearance of a smartphone that performs screen backlight control using capacitance detection.
  • a screen backlight control system 100 for a smart device which can measure the distance between a user and a mobile phone panel without requiring infrared or laser signal reflection.
  • the system 100 includes a detecting unit 110, a determining unit 120, and a control unit 130.
  • the smart device may include, but is not limited to, a user device having a communication function, such as a smart phone or a tablet computer having a touch display area.
  • the display area of such a mobile phone can receive touch information, and the user completes multiple operations on the mobile phone by touching the display panel. Since the power consumption of the display panel of the smart device occupies a large part of the total power consumption of the smart device, it is necessary to turn off the display panel of the smart device as much as possible during unnecessary time.
  • the non-essential time is, for example, the time when the smart device is used for a voice call without using a headset or a hands-free.
  • the smart phone is taken as an example to explain how the screen backlight control system 100 turns off the display panel of the smart device during the unnecessary time.
  • the detecting unit 110 is configured to: measure a capacitance of a detection area on a display panel of the smart device; the determining unit 120 is configured to: compare the capacitance acquired by the detecting unit with a backlight threshold, when the acquired capacitance is greater than the first The first signal is sent when the backlight threshold is generated, and the second signal is sent when the acquired capacitance is less than the second backlight threshold; the control unit 130 is configured to: turn off the backlight of the smart device when receiving the first signal sent by the determining unit, when receiving The smart device backlight is turned on when the second signal sent by the unit is judged.
  • the detecting unit 110 may be configured to: measure a capacitance of a detection area on a display panel of the smart device, where the detection area may be located on a display panel of the smart device, and may be located outside the touch area of the display panel in. This is because most of the smart devices known in the art are touch screen mobile phones, that is, the touch display screen capable of receiving the touch information of the user combines the display area and the operation area into one, and most of the touch display screens It is based on the change of capacitance of the touch panel to recognize the user's gestures and operations. Made.
  • the capacitance change measured in order to complete the proximity detection of the backlight display and the touch recognition of the smart device may be two independent control systems, and the confusion between the two control systems may easily cause the system touch disorder. Therefore, in order to avoid mutual interference between the gesture operation recognition and the proximity detection of the backlight display, the detection area may be disposed in an area outside the touch area of the display panel of the smartphone.
  • the action of the user to answer the phone can be accurately captured, and the detection area may be located at the top of the display panel of the smart device, adjacent to the earpiece of the smart device. This is because, during a call, if the user does not use the hands-free or headset, but directly on the handheld device to talk, it is likely to put the handset of the handset to the ear, then on the entire display panel of the phone, the area near the handset It is an area that is more likely to come into contact with the user's body, and can more accurately capture the action of the user to answer the call.
  • the detection area is set near the earpiece, and the capacitance sensing is correspondingly sensitive and accurate.
  • the detecting unit 110 may be a capacitive sensor, which may be located inside a package housing of the smart device.
  • the package housing may be an insulating material such as polycarbonate (PC), acrylonitrile-butadiene-styrene copolymer ( ABS resin) and other materials.
  • PC polycarbonate
  • ABS resin acrylonitrile-butadiene-styrene copolymer
  • the material of the package casing above the detecting unit 110 may be an insulating material.
  • the detecting unit 110 can utilize metal on a smart phone chip (such as a PCB board or an FPC board) as a capacitive sensing portion of the detecting unit 110, such as a copper plate on a PCB board or an FPC board, and the shape of the sensing portion can be according to a project layout space. However, it can be circular, rectangular, elliptical, and the like.
  • the capacitive sensing area is formed on the FPC board, the bonding surface between the FPC board and the package housing may be an actual sensing area, which may be adhesively bonded to the motherboard through a connector, as shown in FIG. 2 .
  • the air gap existing between the capacitive sensing area and the package outer casing can be filled with conductive foam, so that the capacitive sensing area is closely adhered to the outer casing through the filling material, as shown in FIG. .
  • the principle that the detecting unit 110 completes the proximity detection may include: when there is no human body approaching, that is, when the user is far away from the mobile phone, the capacitance of the detecting unit 110 may include a parasitic capacitance between the copper skin of the capacitive sensing portion and the surrounding ground. For example, it may be composed of a parasitic capacitance between the copper skin of the capacitance sensing portion and the surrounding ground.
  • the basic capacitance C0 of the detecting unit 110 is ( ⁇ 0*A)/d0. Where ⁇ 0 is the dielectric constant of free space, defined as 8.85 ⁇ 10-12F/m; A is the sensing area of copper skin; d0 is copper The distance between the skin and the ground.
  • ⁇ r is the dielectric constant of the medium between the human body and the copper
  • d is the distance between the human body and the copper skin.
  • the detection sensitivity and detection distance of the detecting unit 110 can be improved by adjusting the area of the copper sheet and adjusting the dielectric constant of the medium to accommodate different types of mobile phones.
  • the measurement of the distance between the user and the mobile phone can be converted into the measurement of the capacitance of the detecting unit 110, and the distance between the user and the mobile phone can be determined by the capacitance change of the detecting unit 110.
  • Measuring the distance between the user and the smart phone to satisfy the distance between the monitoring unit 110 when the user answers the phone and the mobile phone can be used as the first backlight threshold.
  • the capacitance of the detecting unit 110 When the capacitance of the detecting unit 110 is greater than the first backlight threshold, the description The additional capacitance is increased, the distance between the user and the mobile phone is reduced, and the user is using the smart phone to talk, and the first signal can be sent to the control unit 120 at this time.
  • the capacitance between the detecting unit 110 when the distance between the user and the smart phone is greater than the distance between the user and the mobile phone when the user answers the call may be used as the second backlight threshold, when the capacitance of the detecting unit 110 is less than the second backlight threshold.
  • the additional capacitance is reduced, the distance between the user and the mobile phone is reduced, and the user ends the call, and the first signal can be sent to the control unit 120 at this time.
  • FIG. 4(a) and 4(b) are schematic structural views showing the front and back sides of the capacitance detecting unit on the PCB board, respectively.
  • the top layer circuit 210 and the sensing unit 220 of the capacitance detecting unit are shown.
  • the sensing unit 220 can be a PCB of the top layer. In this embodiment, the sensing unit 220 can be circular.
  • the top layer circuit 210 can be located around the sensing unit 220 and is not directly connected to the sensing unit.
  • FIG. 4(b) shows the underlying circuit 230 of the capacitance detecting unit, wherein the underlying circuit 230 can be configured to perform floor protection to shield noise interference in the circuit and the system while isolating the copper to another
  • the conductor in one direction is close to the induction, such as a human hand touching the mobile phone on the back of the mobile phone.
  • the detecting unit 110 can convert the change of the distance between the user and the display panel of the mobile phone into a change in the capacitance of the detecting unit, thereby completing the proximity detection, and the capacitance detecting does not need to open a hole in the panel, so that the proximity detection does not damage the aesthetics of the mobile phone.
  • the determining unit 120 may be configured to: compare the capacitance acquired by the detecting unit with a backlight threshold, and issue a first signal when the acquired capacitance is greater than the first backlight threshold, when the acquired capacitance is smaller than the second back The second signal is emitted when the light threshold is reached.
  • the first backlight threshold is greater than the second backlight threshold.
  • a capacitance is connected in parallel with the capacitance of the detection unit, and the capacitance of the detection unit increases. When the capacitance exceeds the first backlight threshold, the user is considered to be close to the mobile phone.
  • the handset in the state of making a call, may send a first signal, the first signal being used to control the backlight of the mobile phone to be turned off; correspondingly, when the user ends the call, away from the earpiece, the capacitance of the detecting unit is reduced, when the capacitance is less than the first
  • a second signal can be sent to control the backlight of the mobile phone.
  • the determining unit 120 when determining that the user ends the call, can satisfy the fact that the capacitance of the detecting unit 110 is smaller than the second backlight threshold, and the capacitance of the previous time detecting unit 110 is greater than the first backlight threshold.
  • the capacitance of the detecting unit 110 is greater than the first backlight threshold
  • the user operation of the capacitance of the detecting unit 110 falling from being greater than the first backlight threshold to less than the second backlight threshold may include: the user using the smart device Move the ear to other places to indicate that the user ends the call. This judgment can more accurately detect the moment when the user starts and ends the call, so that the time of backlight control is more accurate.
  • the determining unit 120 can be implemented by the digital processing circuit, and configured to: convert the change of the capacitance detected by the detecting unit 110 into a change of the voltage, and compare the voltage change with the backlight threshold to generate a corresponding control signal, and complete Analog to digital conversion. Designing a digital circuit having the above functions is a common technical means in the art, and the circuit structure will not be described herein any further, and any digital circuit capable of realizing the function can be set to realize the circuit structure.
  • the control unit 130 can be implemented by a control chip, can turn off the backlight of the mobile phone when receiving the first signal, and turn on the backlight of the mobile phone when receiving the second signal.
  • the control unit 130 can be implemented by a master chip.
  • the function of the control unit 130 can include controlling the opening, or closing, or opening and closing of the backlight of the mobile phone according to the signal sent by the determining unit 120.
  • the control unit used in this embodiment may be the same as the main control chip used in the art, and details are not described herein again.
  • FIG. 1(b) shows a screen backlight control system of another smart device according to an embodiment of the present application, wherein the system 100 further includes a startup unit 111 configured to: determine whether the smart device is in a call state; The screen backlight control system is activated when the smart device is in a call state.
  • the startup unit 111 may also be configured to not activate the screen backlight control system when the smart device is not in a call state.
  • the activation unit 111 only judges that the mobile phone is in a call state
  • the screen backlight control system in the embodiment of the present invention is activated to prevent the backlight from being turned off when the user accidentally touches the capacitance detecting unit during operation, thereby improving the user experience.
  • the embodiment of the present invention further provides a screen backlight control method for a smart device.
  • the method includes the following steps:
  • the smart device measures, by using the detecting unit, a capacitance of a detection area on a display panel of the smart device.
  • the capacitor obtained by the detecting unit compares with the backlight threshold by the determining unit, and sends a first signal when the capacitance acquired by the determining unit is greater than the first backlight threshold, and sends a second signal when the capacitance acquired by the determining unit is less than the second backlight threshold.
  • S130 Turn off the smart device backlight when the control unit receives the first signal, and turn on the smart device backlight when the control unit receives the second signal.
  • the smart device may include, but is not limited to, a user device having a communication function, such as a smart phone or a tablet computer having a touch display area.
  • the display area of such a mobile phone can receive touch information, and the user completes multiple operations on the mobile phone by touching the display panel. Since the power consumption of the display panel of the smart device occupies a large part of the total power consumption of the smart device, it is necessary to turn off the display panel of the smart device as much as possible during unnecessary time.
  • the non-essential time is, for example, the time when the smart device is used for a voice call without using a headset or a hands-free.
  • the display panel of the smart device is selectively described in the above-mentioned non-essential time by using a smart phone as an example.
  • the detection area may be located on a display panel of the smart device, and may be located in an area outside the touch area of the display panel.
  • the smart devices known in the art are mostly touch screen mobile phones, and most touch screen mobile phones recognize the gestures and operations of the user based on the capacitance change of the touch panel, and the proximity detection of the backlight display in the embodiment of the present invention.
  • the touch recognition with the smart device can be two independent control systems. Therefore, in order to avoid mutual interference between the gesture operation recognition and the proximity detection of the backlight display, the detection area may be disposed in an area outside the touch area of the display panel of the smartphone.
  • the action of the user to answer the phone can be accurately captured, and the detection area may be located at the top of the display panel of the smart device, adjacent to the earpiece of the smart device. This is because, during the call, if the user does not use the hands-free or headset, but directly When the device is talking on the phone, it is very likely that the handset of the mobile phone is placed at the ear. Then, on the entire display panel of the mobile phone, the area near the earpiece is an area that is more likely to contact the user's body, and the user can be more accurately captured. The action of the phone.
  • the detection area is set near the earpiece, and its capacitive sensing is correspondingly sensitive and accurate.
  • step S110 may be completed by the detecting unit 110.
  • the detecting unit 110 may be a capacitive sensor located inside the package housing of the smart device.
  • the package housing may be an insulating material such as polycarbonate (PC, PolyCarbonate), ABS resin or the like.
  • PC polycarbonate
  • ABS resin polycarbonate
  • the material of the package casing above the detecting unit 110 may be an insulating material.
  • the detecting unit 110 can utilize metal on a smart phone chip (such as a PCB board or an FPC board) as a capacitive sensing portion of the detecting unit 110, such as a copper plate on a PCB board or an FPC board, and the shape of the sensing portion can be according to a project layout space.
  • the capacitive sensing area is formed on the FPC board, the bonding surface between the FPC board and the package housing may be an actual sensing area, which may be adhesively bonded to the motherboard through a connector, as shown in FIG. 2 .
  • the capacitive sensing area is formed on the PCB board, the air gap existing between the capacitive sensing area and the package outer casing can be filled with conductive foam, so that the capacitive sensing area is closely adhered to the outer casing through the filling material, as shown in FIG. .
  • the principle of detecting the proximity of the detecting unit 110 is as described above, and details are not described herein again.
  • Step S110 can convert the change of the distance between the user and the display panel of the mobile phone into a change in the capacitance of the detecting unit, thereby completing the proximity detection, and the capacitance detection does not need to open a hole in the panel, so that the proximity detection does not damage the aesthetics of the mobile phone.
  • the capacitance acquired by the detecting unit may be compared with a backlight threshold, a first signal is sent when the acquired capacitance is greater than the first backlight threshold, and a second signal is generated when the acquired capacitance is less than the second backlight threshold.
  • the first backlight threshold is greater than the second backlight threshold.
  • a capacitance is connected in parallel with the capacitance of the detection unit, and the capacitance of the detection unit increases. When the capacitance exceeds the first backlight threshold, the user is considered to be close to the mobile phone.
  • the handset in the state of making a call, may send a first signal, the first signal being used to control the backlight of the mobile phone to be turned off; correspondingly, when the user ends the call, away from the earpiece, the capacitance of the detecting unit is reduced, when the capacitance is less than the first
  • a second signal can be sent to control the backlight of the mobile phone.
  • the measured capacitance is smaller than the second backlight threshold, and can also satisfy that the capacitance of the previous time detecting unit 110 is greater than the first backlight threshold.
  • the capacitance of the detecting unit 110 is greater than the first backlight threshold, and the user operation of the capacitance of the detecting unit 110 falling from being greater than the first backlight threshold to less than the second backlight threshold may include: the user using the smart device Move the ear to other places to indicate that the user ends the call. This judgment can more accurately detect the moment when the user starts and ends the call, so that the time of backlight control is more accurate.
  • Step S120 can be implemented by a digital processing circuit.
  • the change of the capacitance detected in step S110 is converted into a voltage change, and the corresponding control signal is generated according to the voltage change compared with the backlight threshold, and the analog to digital conversion is completed.
  • Designing a digital circuit having the above functions is a common technical means in the art, and the circuit structure will not be described herein any further, and any digital circuit capable of realizing the function can be set to realize the circuit structure.
  • Step S130 can be implemented by the control chip, can turn off the backlight of the mobile phone when receiving the first signal, and turn on the backlight of the mobile phone when receiving the second signal.
  • the S130 can be implemented by the main control chip.
  • the function of the main control chip can include the signal sent in step S120 to control the opening of the backlight of the mobile phone, or to turn off, or to turn on and off.
  • the control unit used in this embodiment may be the same as the main control chip used in the art, and details are not described herein again.
  • FIG. 5(b) illustrates a screen backlight control method of another smart device according to an embodiment of the present application, wherein the detecting unit, the determining unit, and the control unit may be included in a screen backlight control system of the smart device, before step S110.
  • the method may further include the step S111: determining whether the smart device is in a call state; and when the smart device is in a call state, starting the screen backlight control system.
  • Step S111 may further include: when the smart device is not in a call state, the screen backlight control system is not activated.
  • step S111 the screen backlight control system in the embodiment of the present invention is activated only when it is determined that the mobile phone is in a call state, so as to prevent the backlight from being turned off when the user accidentally touches the capacitance detecting unit during operation, thereby improving the user experience.
  • the method may further include: determining whether the smart device is in a call state; and when the smart device is in a call state, entering a step of measuring, by the detecting unit, a capacitance of a detection area on a display panel of the smart device; When the smart device is not in a call state, the step of measuring the capacitance of the detection area on the display panel of the smart device by the detecting unit is not entered.
  • FIG. 6(a) is a schematic diagram of the appearance of a smart phone that performs screen backlight control using an infrared emitting source.
  • a light through hole 600 which is arranged to emit and receive infrared rays, and determine the distance between the user and the mobile phone according to the infrared or laser data reflected by the human body received by the sensor.
  • FIG. 6(b) is a schematic diagram of the appearance of a smart phone that is close to the screen backlight control by using the capacitance detection. It can be seen that the technical solution provided by the embodiment of the present invention does not need to reserve a light through hole on the display panel of the mobile phone, thereby greatly improving the The aesthetics of the smartphone.
  • the embodiment of the invention uses the capacitance detection technology to replace the infrared or laser detection technology known in the art to complete the proximity detection of the smart device to turn off the screen backlight during the call, and the capacitance detection can be performed on the PCB board or the FPC board on the display panel of the smart device.
  • the capacitive sensing device the copper skin transforms the distance between the user and the mobile phone into the capacitance change of the detecting unit, so that the user proximity detection can be completed without opening a hole in the display panel of the mobile phone. Since there is no need to open a hole in the display panel of the mobile phone, the aesthetics of the mobile phone will not be affected.
  • the embodiment of the present application further provides a computer readable storage medium storing computer executable instructions that implement the screen backlight control method of the smart device when the computer executable instructions are executed.
  • all or part of the steps of the foregoing embodiments may also be implemented by using an integrated circuit, and the steps may be separately fabricated into integrated circuit modules, or multiple modules thereof or The steps are made into a single integrated circuit module.
  • the devices/function modules/functional units in the above embodiments may be implemented by a general-purpose computing device, which may be centralized on a single computing device or distributed over a network of multiple computing devices.
  • the device/function module/functional unit in the above embodiment When the device/function module/functional unit in the above embodiment is implemented in the form of a software function module and sold or used as a stand-alone product, it can be stored in a computer readable storage medium.
  • the above mentioned computer readable storage medium may be a read only memory, a magnetic disk or an optical disk or the like.
  • the capacitor detection technology is used instead of the infrared or laser detection technology to complete the proximity detection of the screen backlight when the smart device is in a call, and the capacitor can be used as a capacitor on the PCB board of the smart device display panel or the copper plate on the FPC board.
  • the sensing device converts the distance between the user and the mobile phone into a capacitance change of the detecting unit, so that the user proximity detection can be completed without opening a hole in the display panel of the mobile phone. Since there is no need to open a hole in the display panel of the mobile phone, the aesthetics of the mobile phone will not be affected.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Environmental & Geological Engineering (AREA)
  • Human Computer Interaction (AREA)
  • Telephone Function (AREA)

Abstract

一种智能设备的屏幕背光控制系统包括：检测单元，设置为：智能设备通过检测单元测量智能设备的显示面板上的检测区域的电容；判断单元，设置为：将检测单元获取的电容与背光阈值相比较，当获取的电容大于第一背光阈值时发出第一信号，当获取的电容小于第二背光阈值时发出第二信号；控制单元，设置为：当收到判断单元发出的第一信号时关闭智能设备背光，当收到判断单元发出的第二信号时开启智能设备背光。

Description

智能设备的屏幕背光控制系统与方法 技术领域
本申请涉及但不限于通信领域，尤其是一种智能设备的屏幕背光控制系统与方法。
背景技术
随着大屏智能设备的迅速普及，如何降低智能设备的功耗、增加续航时间成为了改善智能设备性能的一个关键技术问题。以智能手机为例，屏幕背光的功耗在手机整体功耗中占了很大比重，需要尽量减少背光部分的功耗。
发明内容
以下是对本文详细描述的主题的概述。本概述并非是为了限制权利要求的保护范围。
可以在手机通话过程中进行如下设计：当用户靠近屏幕时关闭屏幕背光，用户结束通话远离屏幕时再重新点亮屏幕，从而可以大大节约屏幕背光部分带来的功耗损失。
可以通过红外或者激光发射源发射信号，根据传感器接收到的人体反射回的红外或者激光数据来判断用户与手机之间的距离，当距离达到接近或者远离阈值时，控制屏幕背光的关闭和开启，从而实现接近检测和背光控制。这需要在手机面板上针对接近检测做开孔设计，开孔越大效果越好，但同时开孔尺寸大则会影响手机的美观，开孔尺寸改小则会使传感器的接收信号变弱，调试难度大。
可以采用其他接近检测方法，不需要红外或激光信号反射即可测量用户与手机面板之间的距离。
本文提供一种智能设备的屏幕背光控制系统与方法，能够不需要红外或激光信号反射即完成手机屏幕的背光控制。
本申请实施例提供了一种智能设备的屏幕背光控制系统，包括：
检测单元，设置为：智能设备通过检测单元测量智能设备的显示面板上的检测区域的电容；
判断单元，设置为：将检测单元获取的电容与背光阈值相比较，当获取的电容大于第一背光阈值时发出第一信号，当获取的电容小于第二背光阈值时发出第二信号；
控制单元，设置为：当接收到判断单元发出的第一信号时关闭智能设备背光，当接收到判断单元发出的第二信号时开启智能设备背光。
在一种示例性实施方式中，所述检测区域位于智能设备的显示面板上触控区之外的区域。
在一种示例性实施方式中，所述检测区域位于智能设备的显示面板顶部，与智能设备的听筒相邻。
在一种示例性实施方式中，所述第一背光阈值大于所述第二背光阈值。
在一种示例性实施方式中，还包括：
启动单元，设置为：当所述智能设备处于通话状态时，启动所述屏幕背光控制系统。
相应地，本发明实施例还提供了一种智能设备的屏幕背光控制方法，包括：
智能设备通过检测单元测量智能设备的显示面板上的检测区域的电容；
通过判断单元将获取的电容与背光阈值相比较，当获取的电容大于第一背光阈值时判断单元发出第一信号，当获取的电容小于第二背光阈值时判断单元发出第二信号；
当控制单元接收到第一信号时关闭智能设备背光，当控制单元接收到第二信号时开启智能设备背光智能设备智能设备。
在一种示例性实施方式中，所述检测区域位于智能设备的显示面板触控区之外的区域。
在一种示例性实施方式中，所述检测区域位于智能设备的显示面板顶部，与智能设备的听筒相邻。
在一种示例性实施方式中，所述第一背光阈值大于所述第二背光阈值。
在一种示例性实施方式中，所述检测单元、所述判断单元和所述控制单元包括在智能设备的屏幕背光控制系统中；
测量智能设备的显示面板的电容之前，还包括：
当所述智能设备处于通话状态时，启动所述屏幕背光控制系统。
本申请实施例还提供了一种计算机可读存储介质，存储有计算机可执行指令，所述计算机可执行指令被执行时实现上述智能设备的屏幕背光控制方法。
本发明实施例采用电容检测技术代替红外或激光检测技术完成智能设备在通话时关闭屏幕背光的接近检测，由于电容检测时可以通过智能设备显示面板上的印刷电路板(Printed Circuit Board，PCB)板或者挠性印制电路板(Flexible Printed Circuit，FPC)板上的铜皮作为电容感应器件，将用户与手机之间的距离变换转化为检测单元的电容变化，从而不需要在手机的显示面板上开孔即可完成用户接近检测。由于不需要在手机的显示面板上开孔，手机美观不会受到影响。
在阅读并理解了附图和详细描述后，可以明白其他方面。
附图概述
图1(a)为本申请实施例的一种智能设备的屏幕背光控制系统的示意性框图；
图1(b)为本申请实施例的另一种智能设备的屏幕背光控制系统的示意性框图；
图2为做在FPC板上检测单元110的示意图；
图3为做在PCB板上检测单元110的示意图；
图4(a)为本申请实施例的电容检测单元的正面结构示意图；
图4(b)为本申请实施例的电容检测单元的背面结构示意图；
图5(a)为本申请实施例的一种智能设备的屏幕背光控制方法的示意性框图；
图5(b)为本申请实施例的另一种智能设备的屏幕背光控制方法的示 意性框图；
图6(a)是采用红外发射源完成屏幕背光控制的智能手机的外观示意图；
图6(b)是采用电容检测完成屏幕背光控制的智能手机的外观示意图。
本申请的较佳实施方式
下面结合附图对本申请的实施方式进行描述。
在更加详细地讨论示例性实施例之前可以提到的是，一些示例性实施例被描述成作为流程图描绘的处理或方法。虽然流程图将操作描述成顺序的处理，但是其中的许多操作可以被并行地、并发地或者同时实施。此外，操作的顺序可以被重新安排。当相应操作完成时所述处理可以被终止，但是还可以具有未包括在附图中的附加步骤。所述处理可以对应于方法、函数、规程、子例程、子程序等等。
这里所公开的结构和功能细节可以仅仅是代表性的，并且可以是用于描述本申请的示例性实施例的目的。但是本发明实施例可以通过许多替换形式来实现，并且不应当被解释成仅仅受限于这里所阐述的实施例。
可以理解的是，虽然在这里可能使用了术语“第一”、“第二”等等来描述单元，但是这些单元不应当受这些术语限制。使用这些术语仅仅是为了将一个单元与另一个单元进行区分。举例来说，在不背离示例性实施例的范围的情况下，第一单元可以被称为第二单元，并且类似地第二单元可以被称为第一单元。这里所使用的术语“和/或”包括其中一个或更多所列出的相关联项目的任意和所有组合。
可以理解的是，这里所使用的术语仅仅是为了描述实施例而不意图限制示例性实施例。除非上下文明确地另有所指，否则这里所使用的单数形式“一个”、“一项”还意图包括复数。还可以理解的是，这里所使用的术语“包括”和/或“包含”规定所陈述的特征、整数、步骤、操作、单元和/或组件的存在，而不排除存在或添加一个或更多其他特征、整数、步骤、操作、单元、组件和/或其组合。
还可以提到的是，在一些替换实现方式中，所提到的功能/动作可以按照不同于附图中标示的顺序发生。举例来说，取决于所涉及的功能/动作，相继示出的两幅图实际上可以基本上同时执行或者有时可以按照相反的顺序来执行。
下面结合附图对本发明实施例的技术方案作详细描述。
参见图1(a)，根据本申请实施例，提供了一种智能设备的屏幕背光控制系统100，所述系统100能够不需要红外或激光信号反射即可测量用户与手机面板之间的距离。所述系统100包括检测单元110、判断单元120以及控制单元130。
所述智能设备可包括但不限于具有触控显示区的智能手机、平板电脑等具有通信功能的用户设备。此类手机的显示区域能够接收触碰信息，用户通过触摸显示面板完成对手机的多项操作。由于智能设备的显示面板消耗的功耗占据智能设备总功耗的一大部分，因此有必要尽可能地在非必要时间关闭智能设备的显示面板。所述非必要时间例如：在不使用耳机或者免提的情况下使用智能设备进行语音通话的时间。在本实施例中，可选地，以智能手机为例对屏幕背光控制系统100如何在上述非必要时间关闭智能设备的显示面板进行详细说明。
其中，所述检测单元110设置为：测量智能设备的显示面板上的检测区域的电容；所述判断单元120设置为：将检测单元获取的电容与背光阈值相比较，当获取的电容大于第一背光阈值时发出第一信号，当获取的电容小于第二背光阈值时发出第二信号；所述控制单元130设置为：当接收到判断单元发出的第一信号时关闭智能设备背光，当接收到判断单元发出的第二信号时开启智能设备背光。
下面将结合可选实施例对所述系统100的单元进行详细说明。
所述检测单元110可设置为：测量智能设备的显示面板上的检测区域的电容，其中，所述检测区域可位于智能设备的显示面板上，且可位于显示面板的触控区之外的区域中。这是由于，本领域已知的智能设备多数为触屏手机，即采用能够接收用户的触控信息的可触控显示屏将显示区与操作区合二为一，而多数可触控显示屏是基于触控面板的电容变化识别用户的手势和操 作的。本发明实施例中，为了完成背光显示的接近检测而测量的电容变化与智能设备的触控识别可以是两个彼此独立的控制系统，这两个控制系统混淆很容易引发系统触控混乱。因此，为了避免手势操作识别与背光显示的接近检测之间互相干扰，可将所述检测区域设置在智能手机的显示面板的触控区之外的区域。
可选地，为了提高用户接近检测的准确性，能够准确地捕捉到用户接听电话的动作，所述检测区域可位于智能设备的显示面板顶部，与智能设备的听筒相邻。这是由于，在通话中，如果用户不使用免提或耳机，而是直接手持设备进行通话，则很可能将手机的听筒置于耳边，那么在手机的整个显示面板上，听筒附近的区域则是较有可能接触到用户身体的区域，能够较准确地捕捉到用户接听电话的动作。在听筒附近设置检测区域，其电容感应也相应得较灵敏，准确性更高。
所述检测单元110可以是电容传感器，可位于智能设备的封装外壳内部，通常，所述封装外壳可以为绝缘材料，例如聚碳酸酯(PC)、丙烯腈-丁二烯-苯乙烯共聚物(ABS树脂)等材料。对于采用金属材料作为封装外壳的智能设备，其封装外壳位于检测单元110上方的材料可以为绝缘材料。检测单元110可利用智能手机芯片(例如PCB板或者FPC板)上的金属作为检测单元110的电容感应部分，例如PCB板或者FPC板上的铜皮，所述感应部分的形状可根据项目布局空间而定，可以是圆形、矩形、椭圆形等等。当电容感应区域做在FPC板上时，FPC板与封装外壳之间的贴合面可以是实际感应区域，可采用背胶贴合，可与主板通过连接器连接，如图2所示。当电容感应区域做在PCB板上时，电容感应区域与封装外壳之间存在的空气间隙，可以用导电泡棉进行填充，使电容感应区域通过填充材料与外壳紧密贴合，如图3所示。
所述检测单元110完成接近的检测原理可以包括：在没有人体接近，即用户距离手机的距离较远时，检测单元110的电容可包括电容感应部分的铜皮和周边地之间的寄生电容，例如可以由电容感应部分的铜皮与周边地之间的寄生电容组成，此时检测单元110的基础电容C0＝(ε0*A)/d0。其中ε0是自由空间的介电常数，定义为8.85×10-12F/m；A是铜皮的感应面积；d0是铜 皮与地间的距离。当有人体接近时，由于人体具有导电特性，人体、介质、铜皮的排列便可以构成电容器，相当于在原有寄生电容的基础上并联一个附加电容Cuser，Cuser＝(ε0*εr*A)/d。其中εr是人体和铜皮间介质的介电常数，d是人体和铜皮间的距离。检测单元110的检测灵敏度和检测距离可以通过调整铜皮的面积和调整介质的介电常数来进行改善，以适应不同类型的手机。
用户与手机之间的距离越近，附加电容Cuser的值可以越大，检测单元110的总电容可以越大。从而可将对用户与手机之间距离的测量转换为对检测单元110的电容的测量，通过检测单元110电容变化判断用户与手机之间的距离。测量用户与智能手机之间的距离满足用户接听电话时与手机之间的距离时的监测单元110之间的电容可以作为第一背光阈值，当检测单元110的电容大于第一背光阈值时，说明附加电容增加，用户与手机之间的距离减小，用户正在使用智能手机通话，此时可以向控制单元120发出第一信号。同样地，测量用户与智能手机之间的距离大于用户接听电话时与手机之间的距离时的检测单元110之间的电容可以作为第二背光阈值，当检测单元110的电容小于第二背光阈值时，说明附加电容减小，用户与手机之间的距离减小，用户结束通话，此时可以向控制单元120发出第一信号。
图4(a)和图4(b)分别示出做在PCB板上的电容检测单元的正面和背面的结构示意图。参见图4(a)，示出了所述电容检测单元的顶层电路210以及感应单元220。其中，所述感应单元220可以为顶层的PCB铜皮，在本实施例中，所述感应单元220可以为圆形。顶层电路210可位于所述感应单元220周围，且不与所述感应单元直接连接。图4(b)示出了所述电容检测单元的底层电路230，其中，所述底层电路230可设置为：进行铺地保护，可以屏蔽电路和系统中的噪声干扰，同时隔离铜皮对另一个方向的导体接近感应，比如人手在手机背面接触手机等。
所述检测单元110能够将用户与手机的显示面板之间的距离变化转化为检测单元的电容变化，从而完成接近检测，电容检测不需要在面板上开孔，从而接近检测不会破坏手机美感。
所述判断单元120可设置为：将检测单元获取的电容与背光阈值相比较，当获取的电容大于第一背光阈值时发出第一信号，当获取的电容小于第二背 光阈值时发出第二信号。所述第一背光阈值大于所述第二背光阈值。可选地，当用户接近手机面板上的检测区域时，相当于在所述检测单元的电容上并联了一个电容，检测单元的电容增大，当电容超过第一背光阈值时，认为用户接近手机听筒，处于打电话状态，则可以发出第一信号，所述第一信号用于控制关闭手机的背光；相应地，当用户结束通话时，远离听筒，检测单元的电容减小，当电容小于第二背光阈值时可以发出第二信号，控制开启手机的背光。
可选地，所述判断单元120在判断用户结束通话时，除了满足检测单元110的电容小于第二背光阈值以外，还可以满足：前一时刻检测单元110的电容大于第一背光阈值。这是由于，用户在通话时，检测单元110的电容大于第一背光阈值，检测单元110的电容从大于第一背光阈值下降到小于第二背光阈值对应的用户操作可包括：用户将智能设备用耳边移动其他地方，说明用户结束通话。这样判断能够更准确的检测出用户开始和结束通话的时刻，使得背光控制的时间更准确。
所述判断单元120可以由数字处理电路实现，设置为：将检测单元110检测到的电容的变化转化为电压的变化，并根据所述电压变化与背光阈值相比较，产生相应的控制信号，完成模拟量到数字量的转换。设计完成具有上述功能的数字电路是本领域的常用技术手段，对于电路结构在此不再赘述，任何能够实现该功能的数字电路均可设置为实现该电路结构。
所述控制单元130可以由控制芯片实现，能够在接收到第一信号时关闭手机背光，并在接收到第二信号时开启手机背光。控制单元130可以由主控芯片实现，控制单元130的功能可包括根据判断单元120发出的信号控制手机背光的打开，或者关闭，或者打开和关闭。本实施例中采用的控制单元与本领域已知采用的主控芯片可以相同，在此不再赘述。
图1(b)示出了本申请实施例的另一种智能设备的屏幕背光控制系统，其中，所述系统100还可包括启动单元111，设置为：判断所述智能设备是否处于通话状态；当所述智能设备处于通话状态时，启动所述屏幕背光控制系统。启动单元111还可设置为：当所述智能设备不处于通话状态时，不启动所述屏幕背光控制系统。所述启动单元111，只有当判断手机处于通话状 态时才启动本发明实施例中的屏幕背光控制系统，避免当用户在操作中误触电容检测单元而引起的背光关闭，改善用户体验。
相应地，本发明实施例还提供了一种智能设备的屏幕背光控制方法，参见图5(a)，该方法包括以下步骤：
S110、智能设备通过检测单元测量智能设备的显示面板上的检测区域的电容；
S120、通过判断单元将检测单元获取的电容与背光阈值相比较，当判断单元获取的电容大于第一背光阈值时发出第一信号，当判断单元获取的电容小于第二背光阈值时发出第二信号；
S130、当控制单元接收到第一信号时关闭智能设备背光，当控制单元接收到第二信号时开启智能设备背光。
其中，所述智能设备可包括但不限于具有触控显示区的智能手机、平板电脑等具有通信功能的用户设备。此类手机的显示区域能够接收触碰信息，用户通过触摸显示面板完成对手机的多项操作。由于智能设备的显示面板消耗的功耗占据智能设备总功耗的一大部分，因此有必要尽可能地在非必要时间关闭智能设备的显示面板。所述非必要时间例如：在不使用耳机或者免提的情况下使用智能设备进行语音通话的时间。在本实施例中，可选地，以智能手机为例对如何在上述非必要时间关闭智能设备的显示面板进行详细说明。
在步骤S110中，所述检测区域可位于智能设备的显示面板上，且可位于显示面板的触控区之外的区域中。这是由于，本领域已知的智能设备多数为触屏手机，而多数触屏手机是基于触控面板的电容变化识别用户的手势和操作的，而本发明实施例中的背光显示的接近检测与智能设备的触控识别可以是两个彼此独立的控制系统。因此，为了避免手势操作识别与背光显示的接近检测之间互相干扰，可将所述检测区域设置在智能手机的显示面板的触控区之外的区域。
可选地，为了提高用户接近检测的准确性，能够准确地捕捉到用户接听电话的动作，所述检测区域可位于智能设备的显示面板顶部，与智能设备的听筒相邻。这是由于，在通话中，如果用户不使用免提或耳机，而是直接手 持设备进行通话，则很可能将手机的听筒置于耳边，那么在手机的整个显示面板上，听筒附近的区域则是较有可能接触到用户身体的区域，能够较准确地捕捉到用户接听电话的动作。在听筒附近设置检测区域，其电容感应也相应地较灵敏，准确性更高。
可选地，步骤S110可由检测单元110完成。检测单元110可以是电容传感器，位于智能设备的封装外壳内部，通常，所述封装外壳可以为绝缘材料，例如聚碳酸酯(PC，PolyCarbonate)、ABS树脂等材料。对于采用金属材料作为封装外壳的智能设备，其封装外壳位于检测单元110上方的材料可以为绝缘材料。检测单元110可利用智能手机芯片(例如PCB板或者FPC板)上的金属作为检测单元110的电容感应部分，例如PCB板或者FPC板上的铜皮，所述感应部分的形状可根据项目布局空间而定，可以是圆形、矩形、椭圆形等等。当电容感应区域做在FPC板上时，FPC板与封装外壳之间的贴合面可以是实际感应区域，可采用背胶贴合，可与主板通过连接器连接，如图2所示。当电容感应区域做在PCB板上时，电容感应区域与封装外壳之间存在的空气间隙，可以用导电泡棉进行填充，使电容感应区域通过填充材料与外壳紧密贴合，如图3所示。所述检测单元110完成接近的检测原理如前文所述，在此不再赘述。
步骤S110能够将用户与手机的显示面板之间的距离变化转化为检测单元的电容变化，从而完成接近检测，电容检测不需要在面板上开孔，从而接近检测不会破坏手机美感。
在步骤S120中，可将检测单元获取的电容与背光阈值相比较，当获取的电容大于第一背光阈值时发出第一信号，当获取的电容小于第二背光阈值时发出第二信号。所述第一背光阈值大于所述第二背光阈值。可选地，当用户接近手机面板上的检测区域时，相当于在所述检测单元的电容上并联了一个电容，检测单元的电容增大，当电容超过第一背光阈值时，认为用户接近手机听筒，处于打电话状态，则可以发出第一信号，所述第一信号用于控制关闭手机的背光；相应地，当用户结束通话时，远离听筒，检测单元的电容减小，当电容小于第二背光阈值时可以发出第二信号，控制开启手机的背光。
可选地，在步骤S120中判断用户结束通话时，除了满足检测单元110 测量到的电容小于第二背光阈值以外，还可以满足：前一时刻检测单元110的电容大于第一背光阈值。这是由于，用户在通话时，检测单元110的电容大于第一背光阈值，检测单元110的电容从大于第一背光阈值下降到小于第二背光阈值对应的用户操作可包括：用户将智能设备用耳边移动其他地方，说明用户结束通话。这样判断能够更准确的检测出用户开始和结束通话的时刻，使得背光控制的时间更准确。
步骤S120可以由数字处理电路实现，步骤S110中检测到的电容的变化转化为电压的变化，并根据所述电压变化与背光阈值相比较，产生相应的控制信号，完成模拟量到数字量的转换。设计完成具有上述功能的数字电路是本领域的常用技术手段，对于电路结构在此不再赘述，任何能够实现该功能的数字电路均可设置为实现该电路结构。
步骤S130可以由控制芯片实现，能够在接收到第一信号时关闭手机背光，并在接收到第二信号时开启手机背光。S130可以由主控芯片实现，主控芯片的功能可包括步骤S120中发出的信号控制手机背光的打开，或者关闭，或者打开和关闭。本实施例中采用的控制单元与本领域已知采用的主控芯片可以相同，在此不再赘述。
图5(b)示出了本申请实施例的另一种智能设备的屏幕背光控制方法，其中，检测单元、判断单元和控制单元可以包括在智能设备的屏幕背光控制系统中，在步骤S110之前还可包括步骤S111：判断所述智能设备是否处于通话状态；当所述智能设备处于通话状态时，启动所述屏幕背光控制系统。步骤S111还可包括：当所述智能设备不处于通话状态时，不启动所述屏幕背光控制系统。步骤S111，只有当判断手机处于通话状态时才启动本发明实施例中的屏幕背光控制系统，避免当用户在操作中误触电容检测单元而引起的背光关闭，改善用户体验。
或者，在步骤S110之前还可包括：判断所述智能设备是否处于通话状态；当所述智能设备处于通话状态时，进入通过检测单元测量智能设备的显示面板上的检测区域的电容的步骤；当所述智能设备不处于通话状态时，不进入通过检测单元测量智能设备的显示面板上的检测区域的电容的步骤。
图6(a)是采用红外发射源完成屏幕背光控制的智能手机的外观示意图。 其中，在手机的显示面板上，可以存在光通孔600，设置为：发出和接收红外线，并根据传感器接收到的人体反射回的红外或者激光数据来判断用户与手机之间的距离。图6(b)是采用电容检测完成接近屏幕背光控制的智能手机的外观示意图，可以看出，本发明实施例提供的技术方案无需在手机的显示面板上预留光通孔，极大地提升了智能手机的外观美感。
本发明实施例采用电容检测技术代替本领域已知的红外或激光检测技术完成智能设备在通话时关闭屏幕背光的接近检测，由于电容检测时可以通过智能设备显示面板上的PCB板或FPC板上的铜皮作为电容感应器件，将用户与手机之间的距离变换转化为检测单元的电容变化，从而不需要在手机的显示面板上开孔即可完成用户接近检测。由于不需要在手机的显示面板上开孔，手机美观不会受到影响。
本申请实施例还提供了一种计算机可读存储介质，存储有计算机可执行指令，所述计算机可执行指令被执行时实现上述智能设备的屏幕背光控制方法。
可以理解，对于本领域技术人员而言，本发明实施例不限于上述示范性实施例的细节，而且能够以其他的特定形式实现本发明实施例。因此，无论从哪一点来看，均应将实施例看作是示范性的，而且是非限制性的，旨在将落在权利要求的等同要件的含义和范围内的所有变化涵括在本发明实施例内。不应将权利要求中的任何附图标记视为限制所涉及的权利要求。此外，“包括”一词不排除其他单元或步骤，单数不排除复数。系统权利要求中陈述的多个单元或装置也可以由一个单元或装置通过软件或者硬件来实现。第一，第二等词语用来表示名称，而并不表示任何特定的顺序。
本领域普通技术人员可以理解上述实施例的全部或部分步骤可以使用计算机程序流程来实现，所述计算机程序可以存储于一计算机可读存储介质中，所述计算机程序在相应的硬件平台上(如系统、设备、装置、器件、处理器等)执行，在执行时，包括方法实施例的步骤之一或其组合。
可选地，上述实施例的全部或部分步骤也可以使用集成电路来实现，这些步骤可以被分别制作成一个个集成电路模块，或者将它们中的多个模块或 步骤制作成单个集成电路模块来实现。
上述实施例中的装置/功能模块/功能单元可以采用通用的计算装置来实现，它们可以集中在单个的计算装置上，也可以分布在多个计算装置所组成的网络上。
上述实施例中的装置/功能模块/功能单元以软件功能模块的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。上述提到的计算机可读取存储介质可以是只读存储器，磁盘或光盘等。
本领域的普通技术人员可以理解，可以对本申请的技术方案进行修改或者等同替换，而不脱离本申请技术方案的精神和范围。本申请的保护范围以权利要求所定义的范围为准。
工业实用性
本申请实施例采用电容检测技术代替红外或激光检测技术完成智能设备在通话时关闭屏幕背光的接近检测，由于电容检测时可以通过智能设备显示面板上的PCB板或者FPC板上的铜皮作为电容感应器件，将用户与手机之间的距离变换转化为检测单元的电容变化，从而不需要在手机的显示面板上开孔即可完成用户接近检测。由于不需要在手机的显示面板上开孔，手机美观不会受到影响。

Claims (10)

  1. 一种智能设备的屏幕背光控制系统，包括：
    检测单元，设置为：智能设备通过检测单元测量智能设备的显示面板上的检测区域的电容；
    判断单元，设置为：将检测单元获取的电容与背光阈值相比较，当获取的电容大于第一背光阈值时发出第一信号，当获取的电容小于第二背光阈值时发出第二信号；
    控制单元，设置为：当收到判断单元发出的第一信号时关闭智能设备背光，当收到判断单元发出的第二信号时开启智能设备背光。
  2. 根据权利要求1所述屏幕背光控制系统，其中，所述检测区域位于智能设备的显示面板上触控区之外的区域。
  3. 根据权利要求2所述屏幕背光控制系统，其中，所述检测区域位于智能设备的显示面板顶部，与智能设备的听筒相邻。
  4. 根据权利要求1所述屏幕背光控制系统，其中，所述第一背光阈值大于所述第二背光阈值。
  5. 根据权利要求1所述屏幕背光控制系统，还包括：
    启动单元，设置为：当所述智能设备处于通话状态时，启动所述屏幕背光控制系统。
  6. 一种智能设备的屏幕背光控制方法，包括：
    通过检测单元测量智能设备的显示面板上的检测区域的电容；
    通过判断单元将获取的电容与背光阈值相比较，当获取的电容大于第一背光阈值时判断单元发出第一信号，当获取的电容小于第二背光阈值时判断单元发出第二信号；
    当控制单元接收到第一信号时关闭智能设备背光，当控制单元接收到第二信号时开启智能设备背光。
  7. 根据权利要求6所述屏幕背光控制方法，其中，所述检测区域位于智能设备的显示面板上触控区之外的区域。
  8. 根据权利要求7所述屏幕背光控制方法，其中，所述检测区域位于智能设备的显示面板顶部，与智能设备的听筒相邻。
  9. 根据权利要求6所述屏幕背光控制方法，其中，所述第一背光阈值大于所述第二背光阈值。
  10. 根据权利要求7所述屏幕背光控制方法，其中，
    所述检测单元、所述判断单元和所述控制单元包括在智能设备的屏幕背光控制系统中；
    所述测量智能设备的显示面板的电容之前，还包括：
    当所述智能设备处于通话状态时，启动所述屏幕背光控制系统。
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