CN109670369B - Optical biosensor and power-saving control method and system thereof - Google Patents
Optical biosensor and power-saving control method and system thereof Download PDFInfo
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Abstract
The invention is suitable for the technical field of image sensing and provides an optical biosensor and a power-saving control method and a power-saving control system thereof, wherein the power-saving control method comprises the following steps: when the optical biosensor is in a standby state, controlling the optical biosensor to enter a sleep mode, and stopping scanning by the optical biosensor in the sleep mode; when the optical biosensor is in a wake-up state, controlling the optical biosensor to enter a touch detection mode, wherein the optical biosensor intermittently scans in the touch detection mode; judging whether a touch signal is detected in a preset area or not according to a scanning result; and if a touch signal is detected in a preset area, controlling the optical biosensor to enter an information acquisition mode, and continuously scanning the preset area by the optical biosensor in the information acquisition mode. The embodiment of the invention can control the working mode of the optical biosensor according to different working states of the current terminal, and reduce the power consumption of the optical biosensor.
Description
Technical Field
The invention belongs to the technical field of image sensing, and particularly relates to an optical biosensor and a power-saving control method and system thereof.
Background
With the continuous development of science and technology, intelligent terminals such as smart phones and tablet computers are continuously updated. In recent years, biometric image sensing technologies such as fingerprint recognition and facial recognition are widely applied to various intelligent terminals, and the security performance of the intelligent terminals is improved.
However, the biological image sensing function of the existing intelligent terminal is usually in a continuously-on state, so that the power consumption is high, and the battery endurance of the intelligent terminal is greatly reduced.
Disclosure of Invention
In view of this, embodiments of the present invention provide an optical biosensor and a power saving control method and system thereof, so as to solve the problems that the existing biometric image sensing function of an intelligent terminal is usually in a continuously turned on state, power consumption is high, and battery endurance of the intelligent terminal is greatly reduced.
A first aspect of an embodiment of the present invention provides a power saving control method for an optical biosensor, including:
when the optical biosensor is in a standby state, controlling the optical biosensor to enter a sleep mode, and stopping scanning by the optical biosensor in the sleep mode;
when the optical biosensor is in a wake-up state, controlling the optical biosensor to enter a touch detection mode, wherein the optical biosensor intermittently scans in the touch detection mode;
judging whether a touch signal is detected in a preset area or not according to a scanning result;
and if a touch signal is detected in a preset area, controlling the optical biosensor to enter an information acquisition mode, and continuously scanning the preset area by the optical biosensor in the information acquisition mode.
In one embodiment, the determining whether a touch signal is detected in a preset area according to the scanning result includes:
acquiring a scanning signal of a preset area acquired by the optical biosensor;
judging whether the quantized value of the scanning signal exceeds a preset quantization threshold value or not;
if the quantization value exceeds a preset quantization threshold value, judging that a touch signal is detected in a preset area;
and if the quantized value does not exceed a preset quantized threshold value, judging that no touch signal is detected in a preset area.
In one embodiment, the optical biosensor comprises an optical signal emitting module, an optical signal receiving module and a signal processing module, wherein the signal processing module is electrically connected with the optical signal receiving module, and emits an optical signal when the optical signal emitting module is turned on;
the controlling the optical biosensor to enter a sleep mode includes:
controlling the optical signal transmitting module, the optical signal receiving module and the signal processing module to be closed;
the controlling the optical biosensor to enter a touch detection mode includes:
controlling the optical signal transmitting module, the optical signal receiving module and the signal processing module to be intermittently started or closed;
the controlling the optical biosensor to enter an information acquisition mode includes:
and controlling the optical signal transmitting module, the optical signal receiving module and the signal processing module to be continuously started.
In one embodiment, the preset region is a partial region or a whole region within a maximum scanning range of the optical biosensor.
A second aspect of an embodiment of the present invention provides a power saving control system of an optical biosensor, including:
the first control unit is used for controlling the optical biosensor to enter a sleep mode when the optical biosensor is in a standby state, and the optical biosensor stops scanning in the sleep mode;
the second control unit is used for controlling the optical biosensor to enter a touch detection mode when the optical biosensor is in an awakening state, and the optical biosensor intermittently scans in the touch detection mode;
the judging unit is used for judging whether a touch signal is detected in a preset area or not according to a scanning result;
and the third control unit is used for controlling the optical biosensor to enter an information acquisition mode if a touch signal is detected in a preset area, and the optical biosensor continuously scans the preset area in the information acquisition mode.
In one embodiment, the judging unit includes:
the acquisition unit is used for acquiring scanning signals of a preset area acquired by the optical biosensor;
a threshold judgment unit, configured to judge whether a quantization value of the scanning signal exceeds a preset quantization threshold;
the first judging unit is used for judging that a touch signal is detected in a preset area if the quantized value exceeds a preset quantized threshold value;
and the second judging unit is used for judging that the touch signal is not detected in the preset area if the quantized value does not exceed a preset quantized threshold value.
In one embodiment, the optical biosensor comprises an optical signal emitting module, an optical signal receiving module and a signal processing module, wherein the signal processing module is electrically connected with the optical signal receiving module, and emits an optical signal when the optical signal emitting module is turned on;
the first control unit is specifically configured to control the optical signal transmitting module, the optical signal receiving module, and the signal processing module to be turned off;
the second control unit is specifically configured to control the optical signal transmitting module, the optical signal receiving module, and the signal processing module to be intermittently turned on or off;
the third control unit is specifically configured to control the optical signal transmitting module, the optical signal receiving module, and the signal processing module to be continuously turned on.
In one embodiment, the preset region is a partial region or a whole region within a maximum scanning range of the optical biosensor.
A third aspect of the embodiments of the present invention provides an optical biosensor, which is applied to a display device, where the display device includes a backlight module, a display control module, an image sensor, an optical filter, and a control module, and the optical biosensor includes an optical signal emitting module, an optical signal receiving module, and a signal processing module;
the backlight module comprises the optical signal transmitting module, and the optical signal transmitting module comprises an infrared LED; the image sensor comprises the optical signal receiving module and the signal processing module, the signal processing module is electrically connected with the optical signal receiving module, the area of the image sensor is smaller than or equal to that of the display module, and the image sensor is arranged above, below or on the same layer as the display module; the optical filter is an infrared tricolor optical filter which can be penetrated by infrared light, red light, green light and blue light; the display control module is electrically connected with the display module and controls the infrared light to penetrate through the display module; the control module is electrically connected with the image sensor and the optical signal transmitting module;
the control module is configured to perform the steps of any of the methods described above.
A fourth aspect of embodiments of the present invention provides a computer-readable storage medium comprising a computer program stored thereon, which, when executed by a processor, performs the steps of the method according to any one of the above.
In the embodiment of the invention, when the optical biosensor is in a standby state, the optical biosensor is controlled to enter a sleep mode and stop scanning; when the optical biosensor is in the awakening state, controlling the optical biosensor to enter a touch detection mode and intermittently scanning; and when the touch signal is detected in the preset area according to the scanning result, the optical biosensor is controlled to enter the information acquisition mode and continuously scan the preset area, the working mode of the optical biosensor can be controlled according to different working states of the current terminal, and the power consumption of the optical biosensor is reduced.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a flowchart illustrating a power saving control method for an optical biosensor according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of the scanning status of the optical biosensor in different operation modes and the scanning time according to an embodiment of the present invention;
FIG. 3 is a flow chart illustrating a power saving control method for an optical biosensor according to another embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a power-saving control system of an optical biosensor according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a power-saving control system of an optical biosensor according to another embodiment of the present invention;
fig. 6 is a schematic structural diagram of a display device according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a terminal device according to an embodiment of the present invention.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.
In order to explain the technical means of the present invention, the following description will be given by way of specific examples.
One embodiment of the present invention provides a power saving control method of an optical biosensor. In a specific application, the optical biosensor specifically refers to an optical image sensor for collecting images of biological features such as fingerprints, irises, faces, veins and the like by a photoelectric conversion principle. The method can be realized by terminals such as a card-punching sign-in machine with an optical biosensor, a mobile phone, a tablet personal computer, a biological characteristic acquisition device and the like.
As shown in fig. 1, the power saving control method includes:
step S101: and when the optical biosensor is in a standby state, controlling the optical biosensor to enter a sleep mode, and stopping scanning by the optical biosensor in the sleep mode.
In a specific application, the sleep mode refers to a state in which the optical biosensor is in a standby or stopped state, in which the power consumption of the optical biosensor is low and constant, theoretically 0.
In a specific application, the scanning principle of the optical biosensor is as follows: the optical biosensor emits optical signals, receives optical signals reflected by an object, converts the optical signals reflected by the object into photon data, and further processes the photon data into gray value data, so that an image of the object is obtained, and the object is scanned. If no object exists on the light-emitting side of the optical image sensor, the optical signal cannot be reflected back; if there is an object on the light-emitting side of the optical image sensor, the optical signal is reflected back by the object, and the exact position of the object can be determined according to the position of the photosensitive component on the optical image sensor, which receives the reflected light, or the pixel distribution of the finally obtained object image.
Step S102: and when the optical biosensor is in the awakening state, controlling the optical biosensor to enter a touch detection mode, wherein the optical biosensor intermittently scans in the touch detection mode.
In a specific application, the touch detection mode refers to a state where the optical biosensor is intermittently turned on or off, and specifically refers to a working mode where the optical biosensor stops scanning for a first time period, then continues scanning for a second time period, or stops scanning for the second time period after continuously scanning for the second time period, and repeats this operation. In this state, the power consumption of the optical biosensor intermittently changes with the scanning state, and is high when turned on and low when turned off.
In a specific application, the standby state and the awake state specifically refer to states of the intelligent terminal implementing the method, for example, the standby state refers to a black screen state of the intelligent terminal (excluding a black screen state in a power-off situation), and the awake state refers to a bright screen state of the intelligent terminal.
Step S103: and judging whether the touch signal is detected in the preset area or not according to the scanning result.
In a specific application, the scanning result specifically refers to a scanning result sent by the optical biosensor to a control module of the terminal, and the control module analyzes the scanning result to determine whether a touch signal is detected in a region (i.e., a preset region) on the terminal panel corresponding to the scanning range of the optical biosensor.
Specifically, the optical biosensor generally includes an optical signal emitting module for emitting a scanning optical signal, an optical signal receiving module for receiving an optical signal reflected by an object, and a signal processing module for processing the reflected optical signal into a digital signal (image data). The optical signal emitting module may specifically include one or a combination of infrared LEDs, ultraviolet LEDs, and visible light LEDs; the optical signal receiving module specifically comprises an image sensor, wherein a photosensitive surface of the image sensor is provided with a plurality of photosensitive pixel points which are arranged in an array manner and used for converting the received optical signal into an electric signal; the signal processing module may particularly comprise an image processor for processing the electrical signal into a digital signal.
In a specific application, the scanning result is a digital signal output by the optical biosensor, and the preset area may be a whole area of a maximum scanning range of the optical biosensor, that is, a whole area on the terminal where the touch signal can be collected (corresponding to a whole pixel array area of the image sensor), or may be only a whole area on the terminal where the touch signal is collected (corresponding to a pixel area on the image sensor where the reflected light signal is received).
In one embodiment, the preset region is a partial region or a whole region within a maximum scanning range of the optical biosensor.
In one embodiment, the optical biosensor is applied to a display device, and the maximum scanning range of the optical biosensor covers the entire display area of the display device.
In a specific application, the display device may be a full-screen display device, and the optical biosensor may collect touch signals received by all display areas of the full-screen display device.
In one embodiment, step S103 is followed by:
if no touch signal is detected in the preset area, the process returns to step S102.
Step S104: and if a touch signal is detected in a preset area, controlling the optical biosensor to enter an information acquisition mode, and continuously scanning the preset area by the optical biosensor in the information acquisition mode.
In a specific application, the information collection mode refers to a state where the optical biosensor is continuously turned on, and the optical biosensor continuously scans in the state, and the power consumption of the optical biosensor is high and constant in the state.
In one embodiment, step S104 is followed by:
if the scanning of the preset area is finished, the step S102 is returned to.
As shown in fig. 2, a schematic diagram illustrating a relationship between a scanning state and a scanning time when the optical biosensor is in a sleep mode, a touch detection mode, and an information acquisition mode is shown. The power consumption is low when the scanning is stopped and high when the scanning is continued.
In one embodiment, the optical biosensor comprises an optical signal emitting module, an optical signal receiving module and a signal processing module, wherein the signal processing module is electrically connected with the optical signal receiving module, the optical signal emitting module emits an optical signal when being turned on, and the optical signal comprises one or more combinations of an infrared light signal, an ultraviolet light signal and a human eye visible light signal;
correspondingly, step S101 includes: controlling the optical signal transmitting module, the optical signal receiving module and the signal processing module to be closed;
step S102 includes: controlling the optical signal transmitting module, the optical signal receiving module and the signal processing module to be intermittently started or closed;
step S104 includes: and controlling the optical signal transmitting module, the optical signal receiving module and the signal processing module to be continuously started.
The embodiment controls the optical biosensor to enter the sleep mode and stop scanning when in the standby state; when the optical biosensor is in the awakening state, controlling the optical biosensor to enter a touch detection mode and intermittently scanning; and when the touch signal is detected in the preset area according to the scanning result, the optical biosensor is controlled to enter the information acquisition mode and continuously scan the preset area, the working mode of the optical biosensor can be controlled according to different working states of the current terminal, and the power consumption of the optical biosensor is reduced.
As shown in fig. 3, in an embodiment of the present invention, step S103 in the embodiment corresponding to fig. 1 specifically includes:
step S301: and acquiring a scanning signal of a preset area acquired by the optical biosensor.
In a specific application, the scanning signal is a digital signal obtained by processing an optical signal reflected by an object and acquired by the optical biosensor, and the scanning signal reflects the photon quantity acquired by each photosensitive pixel point in the optical biosensor.
Step S302: and judging whether the quantized value of the scanning signal exceeds a preset quantization threshold value.
In a specific application, the quantization value of the scan signal may specifically refer to a gray value corresponding to the scan signal, and since the scan signal may be processed as an image signal, the quantization value of the scan signal may be the number of pixels in the image signal whose gray value is greater than a preset threshold. The preset quantization threshold refers to the lowest standard quantity of the quantization values. If the quantization value is too small, it indicates that the time for the object to contact the terminal panel is too short or the contact area is too small, so that the optical biosensor cannot timely collect the optical signal reflected by the object or the collected optical signal is less during scanning, and the number of pixels with gray values larger than a preset threshold value in the finally obtained image signal is less, and at this time, it can be determined that no touch signal is detected.
In specific application, the quantization value may also refer to the number of photosensitive pixels with the photon quantity greater than a preset threshold value collected in the optical biosensor.
In one embodiment, step S302 is preceded by:
a quantization threshold is set.
Step S303: if the quantization value exceeds a preset quantization threshold value, judging that a touch signal is detected in a preset area;
step S304: and if the quantized value does not exceed a preset quantized threshold value, judging that no touch signal is detected in a preset area.
It should be understood that, the sequence numbers of the steps in the foregoing embodiments do not imply an execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present invention.
As shown in fig. 4, an embodiment of the invention provides a power saving control system 100 of an optical biosensor for executing the method steps in the embodiment corresponding to fig. 1, the power saving control system includes:
a first control unit 101, configured to control the optical biosensor to enter a sleep mode when the optical biosensor is in a standby state, where the optical biosensor stops scanning in the sleep mode;
a second control unit 102, configured to control the optical biosensor to enter a touch detection mode when the optical biosensor is in an awake state, where the optical biosensor intermittently scans in the touch detection mode;
a judging unit 103, configured to judge whether a touch signal is detected in a preset area according to a scanning result;
a third control unit 104, configured to control the optical biosensor to enter an information acquisition mode if a touch signal is detected in a preset area, where the optical biosensor continuously scans the preset area in the information acquisition mode.
In a specific application, the power saving control system may specifically be a software control system in a terminal to which the optical biosensor is applied, the system may be executed by a control module in the terminal, and the units 101 and 104 may specifically be software program modules. The control module may be specifically implemented by a logic processing device such as a central controller.
In one embodiment, the power saving control system further comprises:
and the first returning unit is used for returning to the second control unit if the touch signal is not detected in the preset area.
In one embodiment, the power saving control system further comprises:
and the second returning unit is used for returning to the second control unit if the preset area scanning is finished.
In one embodiment, the optical biosensor comprises an optical signal emitting module, an optical signal receiving module and a signal processing module, wherein the signal processing module is electrically connected with the optical signal receiving module, the optical signal emitting module emits an optical signal when being turned on, and the optical signal comprises one or more combinations of an infrared light signal, an ultraviolet light signal and a human eye visible light signal;
the first control unit is specifically configured to control the optical signal transmitting module, the optical signal receiving module, and the signal processing module to be turned off;
the second control unit is specifically configured to control the optical signal transmitting module, the optical signal receiving module, and the signal processing module to be intermittently turned on or off;
the third control unit is specifically configured to control the optical signal transmitting module, the optical signal receiving module, and the signal processing module to be continuously turned on.
The embodiment controls the optical biosensor to enter the sleep mode and stop scanning when in the standby state; when the optical biosensor is in the awakening state, controlling the optical biosensor to enter a touch detection mode and intermittently scanning; and when the touch signal is detected in the preset area according to the scanning result, the optical biosensor is controlled to enter the information acquisition mode and continuously scan the preset area, the working mode of the optical biosensor can be controlled according to different working states of the current terminal, and the power consumption of the optical biosensor is reduced.
As shown in fig. 5, in an embodiment of the present invention, the determining unit 103 in the embodiment corresponding to fig. 4 specifically includes a structure for executing the method steps in the embodiment corresponding to fig. 3, which includes:
an obtaining unit 301, configured to obtain a scanning signal of a preset area acquired by the optical biosensor;
a threshold determination unit 302, configured to determine whether a quantization value of the scanning signal exceeds a preset quantization threshold;
a first determining unit 303, configured to determine that a touch signal is detected in a preset area if the quantized value exceeds a preset quantized threshold;
a second determining unit 304, configured to determine that a touch signal is not detected in the predetermined area if the quantization value does not exceed the predetermined quantization threshold.
In a specific application, the units 301 and 304 may also be software program units executed by a control module of the terminal.
As shown in fig. 6, an embodiment of the present invention provides an optical biosensor applied to a display device 600; the display device 600 includes a backlight module 610, a display module 620, a display control module 630, an image sensor 640, an optical filter 650 and a control module 660, and the optical biosensor includes an optical signal emitting module, an optical signal receiving module and a signal processing module.
As shown in fig. 6, in the present embodiment, the optical signal emitting module of the optical biosensor belongs to a part of the backlight module 610, and the backlight module 610 includes the optical signal emitting module, which includes the infrared LED 611.
In one embodiment, the optical signal emitting module may further include an ultraviolet LED or a visible light LED of any color.
In a specific application, a backlight module of a display device generally includes a backlight lamp and a light-homogenizing plate, wherein the backlight lamp is generally a white light LED and is disposed below or at the side of the light-homogenizing plate.
As shown in fig. 6, the backlight module 610 of the present embodiment further includes a white LED612 and a light-homogenizing plate 613.
As shown in fig. 6, in the present embodiment, the optical signal receiving module and the signal processing module of the optical biosensor belong to a part of the image sensor 640, and the signal processing module is electrically connected to the optical signal receiving module.
In a specific application, the optical signal receiving module specifically refers to a photosensitive component on the image sensor, and the signal processing module specifically refers to an analog-to-digital converter that performs analog-to-digital conversion on an optical signal received by the photosensitive component.
In this embodiment, the image sensor is a large-area image sensor, the area of which is smaller than or equal to the area of the display module, and the image sensor can collect touch signals on all display areas of the display device, and is suitable for a display device with a full-face screen panel.
In particular applications, the image sensor may be disposed above, below, or on the same layer as the display module.
As shown in fig. 6, the image sensor 640 is exemplarily shown disposed above the display module 620 in the present embodiment.
In this embodiment, the filter is an infrared tricolor filter which can transmit infrared light, red light, green light and blue light. The film is prepared by a special film coating process, and can simultaneously transmit infrared light, red light, green light and blue light, so that the display module can display three primary color images and can also collect optical biological images such as fingerprints, veins, irises and the like.
As shown in fig. 6, in the present embodiment, the display control module 630 is electrically connected to the display module 620, and the display control module 630 is used for controlling infrared light to pass through the display module 620.
In a specific application, the Display module may be any type of Display device, for example, a Thin Film Transistor Liquid Crystal Display (TFT-LCD), an OLED (Organic electroluminescent Display), a QLED (Quantum Dot Light Emitting Diodes), and the like. In this embodiment, the display module is specifically a thin film transistor liquid crystal display. Correspondingly, the display control module is specifically a Thin Film Transistor (TFT) liquid crystal driver chip. The display control module controls the display of the display module by adjusting the magnitude of the voltage applied to the display module and adjusting the optical axis orientation of the liquid crystal particles in the display module.
As shown in fig. 6, in the present embodiment, the control module 660 is electrically connected to the image sensor 640 and the infrared LED611, and is used for implementing control over the operation mode of the optical biosensor, specifically, the control module 660 is used for executing the method steps in the above-mentioned method embodiments.
In a specific application, the units in the above system embodiments are software program units executed by the control module.
In specific application, the control module is a central processing unit of the display device and is also connected with the display control module and the white light LED to realize the control of the display state of the display device.
As shown in fig. 6, the display device 600 further includes a transparent cover 670, and the display device 600 is formed by sequentially stacking the transparent cover 670, the optical filter 650, the image sensor 640, the display module 620, the display control module 630 and the backlight module 610 from top to bottom.
In a specific application, the transparent cover plate body may be a glass cover plate or a touch display panel.
The embodiment does not need a capacitive touch signal acquisition device by providing a display device combining a large-area image sensor and a display module, can realize the full-screen biological image acquisition function of the display device, can be applied to a full-screen display device, and has the advantages of reduced power consumption, low cost, simple structure and easy realization.
As shown in fig. 7, an embodiment of the present invention provides a terminal device 7, which includes: a processor 70, a memory 71 and a computer program 72 stored in said memory 71 and executable on said processor 70. The processor 70 implements the steps in the various power saving control method embodiments described above, such as the steps S101 to S104 shown in fig. 1, when executing the computer program 72. Alternatively, the processor 70, when executing the computer program 72, implements the functions of the modules/units in the above-mentioned device embodiments, such as the functions of the units 101 to 104 shown in fig. 4.
Illustratively, the computer program 72 may be divided into one or more units, which are stored in the memory 71 and executed by the processor 70 to accomplish the present invention. The one or more units may be a series of computer program instruction segments capable of performing specific functions, which are used to describe the execution process of the computer program 72 in the terminal device 7. For example, the computer program 72 may be divided into a first control unit, a second control unit, a judgment unit, and a third control unit, and each unit has the following specific functions:
the first control unit is used for controlling the optical biosensor to enter a sleep mode when the optical biosensor is in a standby state, and the optical biosensor stops scanning in the sleep mode;
the second control unit is used for controlling the optical biosensor to enter a touch detection mode when the optical biosensor is in an awakening state, and the optical biosensor intermittently scans in the touch detection mode;
the judging unit is used for judging whether a touch signal is detected in a preset area or not according to a scanning result;
and the third control unit is used for controlling the optical biosensor to enter an information acquisition mode if a touch signal is detected in a preset area, and the optical biosensor continuously scans the preset area in the information acquisition mode.
The terminal device 7 may be a desktop computer, a notebook, a palm computer, a cloud server, or other computing devices. The terminal device may include, but is not limited to, a processor 70, a memory 71. It will be appreciated by those skilled in the art that fig. 7 is merely an example of a terminal device 7 and does not constitute a limitation of the terminal device 7 and may comprise more or less components than shown, or some components may be combined, or different components, for example the terminal device may further comprise input output devices, network access devices, buses, etc.
The Processor 70 may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field-Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic, discrete hardware components, etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The memory 71 may be an internal storage unit of the terminal device 7, such as a hard disk or a memory of the terminal device 7. The memory 71 may also be an external storage device of the terminal device 7, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), and the like, which are provided on the terminal device 7. Further, the memory 71 may also include both an internal storage unit and an external storage device of the terminal device 7. The memory 71 is used for storing the computer program and other programs and data required by the terminal device. The memory 71 may also be used to temporarily store data that has been output or is to be output.
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-mentioned division of the functional units and modules is illustrated, and in practical applications, the above-mentioned function distribution may be performed by different functional units and modules according to needs, that is, the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-mentioned functions. Each functional unit and module in the embodiments may be integrated in one processing unit, or each unit may exist alone physically, or two or more units are integrated in one unit, and the integrated unit may be implemented in a form of hardware, or in a form of software functional unit. In addition, specific names of the functional units and modules are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present application. The specific working processes of the units and modules in the system may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to the related descriptions of other embodiments for parts that are not described or illustrated in a certain embodiment.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
In the embodiments provided in the present invention, it should be understood that the disclosed apparatus/terminal device and method may be implemented in other ways. For example, the above-described embodiments of the apparatus/terminal device are merely illustrative, and for example, the division of the modules or units is only one logical division, and there may be other divisions when actually implemented, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated modules/units, if implemented in the form of software functional units and sold or used as separate products, may be stored in a computer readable storage medium. Based on such understanding, all or part of the flow of the method according to the embodiments of the present invention may also be implemented by a computer program, which may be stored in a computer-readable storage medium, and when the computer program is executed by a processor, the steps of the method embodiments may be implemented. . Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, usb disk, removable hard disk, magnetic disk, optical disk, computer Memory, Read-Only Memory (ROM), Random Access Memory (RAM), electrical carrier wave signals, telecommunications signals, software distribution medium, and the like. It should be noted that the computer readable medium may contain other components which may be suitably increased or decreased as required by legislation and patent practice in jurisdictions, for example, in some jurisdictions, computer readable media which may not include electrical carrier signals and telecommunications signals in accordance with legislation and patent practice.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention.
Claims (10)
1. A power saving control method of an optical biosensor, the power saving control method comprising:
when the optical biosensor is in a standby state, controlling the optical biosensor to enter a sleep mode, and stopping scanning by the optical biosensor in the sleep mode;
when the optical biosensor is in an awakening state, controlling the optical biosensor to enter a touch detection mode, wherein the optical biosensor intermittently scans in the touch detection mode, specifically, the optical biosensor continuously scans for a second time period after stopping scanning for a first time period or stops scanning for the first time period after continuously scanning for the second time period, and the operation mode is repeated in such a way; the standby state and the awakening state are states of the intelligent terminal;
judging whether a touch signal is detected in a preset area or not according to a scanning result;
if a touch signal is detected in a preset area, controlling the optical biosensor to enter an information acquisition mode, and continuously scanning the preset area by the optical biosensor in the information acquisition mode;
and if the touch signal is not detected or the scanning of the preset area is finished, returning to control the optical biosensor to enter a touch detection mode.
2. The power saving control method of the optical biosensor according to claim 1, wherein the determining whether the touch signal is detected in the preset area according to the scanning result comprises:
acquiring a scanning signal of a preset area acquired by the optical biosensor;
judging whether the quantized value of the scanning signal exceeds a preset quantization threshold value or not;
if the quantization value exceeds a preset quantization threshold value, judging that a touch signal is detected in a preset area;
and if the quantized value does not exceed a preset quantized threshold value, judging that no touch signal is detected in a preset area.
3. The power saving control method of the optical biosensor according to any one of claims 1 or 2, wherein the optical biosensor comprises an optical signal emitting module, an optical signal receiving module, and a signal processing module, the signal processing module is electrically connected to the optical signal receiving module, and the optical signal emitting module emits an optical signal when turned on;
the controlling the optical biosensor to enter a sleep mode includes:
controlling the optical signal transmitting module, the optical signal receiving module and the signal processing module to be closed;
the controlling the optical biosensor to enter a touch detection mode includes:
controlling the optical signal transmitting module, the optical signal receiving module and the signal processing module to be intermittently started or closed;
the controlling the optical biosensor to enter an information acquisition mode includes:
and controlling the optical signal transmitting module, the optical signal receiving module and the signal processing module to be continuously started.
4. The power saving control method of an optical biosensor according to claim 1, wherein the preset area is a partial area or a whole area within a maximum scanning range of the optical biosensor.
5. A power saving control system of an optical biosensor, comprising:
the first control unit is used for controlling the optical biosensor to enter a sleep mode when the optical biosensor is in a standby state, and the optical biosensor stops scanning in the sleep mode;
the second control unit is used for controlling the optical biosensor to enter a touch detection mode when the optical biosensor is in an awakening state, and the optical biosensor intermittently scans in the touch detection mode, specifically, the optical biosensor continuously scans for a second time period after stopping scanning for the first time period or stops scanning for the first time period after continuously scanning for the second time period, and the operation mode is a working mode which is repeated in such a way; the standby state and the awakening state are states of the intelligent terminal;
the judging unit is used for judging whether a touch signal is detected in a preset area or not according to a scanning result;
the third control unit is used for controlling the optical biosensor to enter an information acquisition mode if a touch signal is detected in a preset area, and the optical biosensor continuously scans the preset area in the information acquisition mode;
the first returning unit is used for returning to control the optical biosensor to enter a touch detection mode if no touch signal is detected in a preset area;
and the second returning unit is used for returning to control the optical biosensor to enter a touch detection mode if the scanning of the preset area is finished.
6. The power-saving control system of an optical biosensor according to claim 5, wherein the determining unit comprises:
the acquisition unit is used for acquiring scanning signals of a preset area acquired by the optical biosensor;
a threshold judgment unit, configured to judge whether a quantization value of the scanning signal exceeds a preset quantization threshold;
the first judging unit is used for judging that a touch signal is detected in a preset area if the quantized value exceeds a preset quantized threshold value;
and the second judging unit is used for judging that the touch signal is not detected in the preset area if the quantized value does not exceed a preset quantized threshold value.
7. The power saving control system of the optical biosensor according to any one of claims 5 or 6, wherein the optical biosensor comprises an optical signal emitting module, an optical signal receiving module, and a signal processing module, the signal processing module is electrically connected to the optical signal receiving module, and the optical signal emitting module emits an optical signal when turned on;
the first control unit is specifically configured to control the optical signal transmitting module, the optical signal receiving module, and the signal processing module to be turned off;
the second control unit is specifically configured to control the optical signal transmitting module, the optical signal receiving module, and the signal processing module to be intermittently turned on or off;
the third control unit is specifically configured to control the optical signal transmitting module, the optical signal receiving module, and the signal processing module to be continuously turned on.
8. The power-saving control system of an optical biosensor according to claim 7, wherein the preset area is a partial area or a whole area within a maximum scanning range of the optical biosensor.
9. An optical biosensor is characterized by being applied to a display device, wherein the display device comprises a backlight module, a display control module, an image sensor, an optical filter and a control module;
the backlight module comprises an optical signal transmitting module, and the optical signal transmitting module comprises an infrared LED; the image sensor comprises an optical signal receiving module and a signal processing module, the signal processing module is electrically connected with the optical signal receiving module, the area of the image sensor is smaller than or equal to that of the display module, and the image sensor is arranged above, below or on the same layer as the display module; the optical filter is an infrared tricolor optical filter which can be penetrated by infrared light, red light, green light and blue light; the display control module is electrically connected with the display module and controls the infrared light to penetrate through the display module; the control module is electrically connected with the image sensor and the optical signal transmitting module;
the control module is adapted to perform the steps of the method according to any of claims 1 to 4.
10. A computer-readable storage medium, in which a computer program is stored which, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 4.
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