CN111212158B - Terminal device - Google Patents

Terminal device Download PDF

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Publication number
CN111212158B
CN111212158B CN201811393280.1A CN201811393280A CN111212158B CN 111212158 B CN111212158 B CN 111212158B CN 201811393280 A CN201811393280 A CN 201811393280A CN 111212158 B CN111212158 B CN 111212158B
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component
display screen
energy
reflected
signal
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CN111212158A (en
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陈朝喜
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Beijing Xiaomi Mobile Software Co Ltd
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Beijing Xiaomi Mobile Software Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • H04M1/026—Details of the structure or mounting of specific components
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Abstract

The present disclosure relates to a terminal device. The terminal device includes: a display screen; apart from the response subassembly, apart from the below that the response subassembly is located the display screen, apart from the response subassembly and include: the emitting component is used for emitting periodic laser signals to the direction of the display screen; the detection component is used for detecting whether the display screen above the distance sensing component is abnormal or not; and the control component is used for controlling and reducing the energy density of the laser signal emitted by the emitting component when the display screen above the distance sensing component is abnormal. According to this disclosed embodiment's terminal equipment can detect apart from the display screen of response subassembly top whether unusual, when the display screen of distance response subassembly top is unusual, the control reduces apart from the energy density of the laser signal of response subassembly transmission part transmission, can reduce the direct outward shooting of laser signal when the display screen is unusual and go out the injury to the user, improves terminal equipment's security performance.

Description

Terminal device
Technical Field
The present disclosure relates to the field of electronic devices, and in particular, to a terminal device.
Background
With the continuous development of mobile technology, terminal devices (e.g., mobile phones, etc.) are increasingly popularized, and people can perform various types of entertainment and social activities through the terminal devices, for example, watching episodes anytime and anywhere. Of course, with the popularization of terminal devices, people also put higher demands on the security performance of the terminal devices.
Disclosure of Invention
To overcome the problems in the related art, the present disclosure provides a terminal device.
According to a first aspect of the embodiments of the present disclosure, there is provided a terminal device, including:
a display screen;
a distance sensing component, the distance sensing component is located below the display screen, the distance sensing component includes: the emitting component is used for emitting periodic laser signals to the direction of the display screen;
the detection component is used for detecting whether the display screen above the distance sensing component is abnormal or not;
and the control component is used for controlling and reducing the energy density of the laser signal emitted by the emitting component when the display screen above the distance sensing component is abnormal.
For the above terminal device, in a possible implementation manner, the distance sensing component further includes: the receiving component is used for receiving a reflected signal of the laser signal after the laser signal is reflected by an object;
the detection component is used for determining the reflection energy of the reflection signal received in the current period, determining reference energy from the reflection energy, and determining that the display screen above the distance sensing component is abnormal when the reference energy is smaller than or equal to an energy threshold value.
With regard to the above terminal device, in a possible implementation manner, the control component is configured to, when the display screen above the distance sensing component is abnormal, perform at least one of the following operations:
reducing the emission power of the laser signal emitted by the emission component;
adjusting the frequency of the laser signal;
and enlarging the emission angle of the laser signal.
For the above terminal device, in a possible implementation manner, the terminal device further includes:
and the processor is used for controlling the terminal equipment to display safety prompt information on a display interface when the display screen above the distance sensing assembly is abnormal.
For the above terminal device, in a possible implementation manner, the detecting component is configured to determine the reflection energy of the reflection signal according to a first time when the laser signal is emitted in the current cycle and a receiving time when the reflection signal is received.
For the above terminal device, in a possible implementation manner, the detecting component is configured to determine the reflected energy of the first reflected signal received in the current period as the reference energy.
For the above terminal device, in a possible implementation manner, the detecting component is configured to calibrate the reference energy when only the first reflected signal is received in a current period and the reference energy is greater than or equal to a reference energy threshold.
For the above terminal device, in a possible implementation manner, the detecting unit is configured to determine a weight of each reflected energy according to a reflected energy of each reflected signal in a current period, and adjust the weight of a reference energy in the reflected energy when the weight of the reference energy is greater than or equal to a weight threshold.
For the above terminal device, in one possible implementation, the emitting component includes a vertical cavity surface emitting VCSEL laser.
For the above terminal device, in one possible implementation manner, the display screen is a full screen.
The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects: the terminal equipment of this disclosed embodiment can detect apart from the display screen of response subassembly top whether unusual, and when the display screen of distance response subassembly top was unusual, the control reduced apart from the energy density of the laser signal of response subassembly transmitting part transmission, can reduce the direct outward shooting of laser signal when the display screen is unusual and go out the injury to the user, improves terminal equipment's security performance.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.
Fig. 1 is a schematic diagram of a terminal device shown according to an example embodiment.
Fig. 2 is a schematic diagram of a terminal device shown according to an example embodiment.
FIG. 3 is a schematic diagram illustrating a distance sensing assembly according to an exemplary embodiment.
Fig. 4 is a schematic diagram of a terminal device shown according to an example embodiment.
FIG. 5 is a schematic diagram of an optical resonant cavity shown in accordance with an exemplary embodiment.
Fig. 6 is a schematic diagram of a terminal device shown according to an example embodiment.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.
Fig. 1 is a schematic diagram of a terminal device shown according to an example embodiment. Fig. 2 is a schematic diagram of a terminal device shown according to an example embodiment. As shown in fig. 1 and 2, the terminal device 1 includes:
a display screen 11;
a distance sensing assembly 12, the distance sensing assembly 12 being located below the display screen 11, the distance sensing assembly 12 comprising: the emitting component is used for emitting periodic laser signals to the direction of the display screen 11;
the detection component is used for detecting whether the display screen above the distance sensing component is abnormal or not;
and the control component is used for controlling and reducing the energy density of the laser signal emitted by the emitting component when the display screen above the distance sensing component is abnormal.
According to the embodiment of the disclosure, whether the display screen above the distance sensing assembly is abnormal or not can be detected, and when the display screen above the distance sensing assembly is abnormal, the energy density of the laser signal emitted by the distance sensing assembly emitting component is controlled to be reduced, wherein the energy density of the laser signal can refer to the laser power in a unit area. Therefore, when the display screen above the distance sensing assembly is abnormal, the energy density of the laser signal emitted by the emitting component is controlled and reduced, so that the energy density of the laser signal emitted by the emitting component at each point in space is lower, the damage of the laser signal directly emitting outwards to a user (for example, eyes of the user) when the display screen is abnormal can be reduced, and the safety performance of the terminal equipment is improved.
In one possible implementation manner, the terminal device may be any device such as a mobile phone and a tablet computer, and the distance sensing component may be a proximity sensor and may be configured to measure a distance from an object to the terminal device (e.g., the distance sensing component). For convenience of explanation, a mobile phone is taken as an example of the terminal device.
In one possible implementation, the display screen is a full-screen.
For example, the front display screen of the mobile phone is a full screen, for example, as shown in fig. 2, four frames of the display screen 11 of the mobile phone are designed without frames, and no hole is formed on the display screen 11, which accounts for nearly 100% of the screen. Therefore, the terminal equipment can be ensured to have the characteristics of simple structure, high attractiveness, strong technological sense and the like. The specific structure and form of the display screen of the terminal equipment are not limited by the disclosure.
In one possible implementation, as shown in fig. 1 and 2, the distance sensing assembly 12 is located below the display screen 11. For example, the distance sensing component 12 may be located below the upper left region of the display screen 11. Therefore, when the user communicates through the terminal equipment, the position of the distance sensing component is closer to the ear of the user, and the distance measuring accuracy is improved. The present disclosure is not limited to a particular location of the distance sensing assembly.
The distance sensing assembly comprises an emitting component, and the emitting component is used for emitting periodic laser signals to the display screen. The emitting component may comprise a vertical cavity surface emitting VCSEL laser. The laser emitted by the VCSEL laser has the characteristics of small divergence angle, high energy accumulation density, strong penetration capability and the like. The present disclosure does not limit the kind of laser included in the emitting part.
In a possible implementation manner, the distance sensing assembly may further include a receiving component for receiving a reflected signal of the laser signal after the laser signal is reflected by the object. The receiving means may comprise, for example, various types of optical signal detectors, such as single Photon Avalanche diode, spad (single Photon Avalanche diode). The present disclosure does not limit the kind of the receiving member. It should be understood that, when the emitting component emits the laser signal 1 time in the current period, because the light has a large propagation speed, the emitted laser signal may encounter multiple objects in one emitting period and reflect back to multiple reflected signals to be received by the receiving component, and the present disclosure does not limit the number of reflected signals received in the current period.
FIG. 3 is a schematic diagram illustrating a distance sensing assembly according to an exemplary embodiment. As shown in fig. 3, the distance sensing assembly may include a transmitting part and a receiving part. The transmitting component can be used for transmitting periodic laser signals and has the characteristics of small transmitting angle for transmitting the laser signals and the like. The receiving part may receive the reflected signal (laser signal) and convert optical energy of the received reflected signal into a current signal. The distance sensing assembly can be internally controlled by the same clock and controller, and also comprises an analog front end. The analog front end can be an analog front end integrated circuit, can comprise an amplifying circuit and an analog-to-digital converter, and can be used for linearly amplifying a current signal, converting the current signal into a voltage signal and collecting the voltage signal. For example, the received current signal is amplified by an amplifier, then converted into a voltage signal through a resistor, and then subjected to analog-to-digital conversion by an analog-to-digital converter, so that the optical signal is converted into a voltage signal and collected. The distance sensing component (e.g., a distance calculator included with the distance sensing component) may generate a digital distance value based on the signal output by the analog front end.
In one possible implementation, the distance sensing component may transmit a periodic laser signal through the transmitting component, receive a reflection signal through the receiving component, and determine the reflection signal received in the current period and the reflection energy of the reflection signal, and select a reflection signal for distance calculation from the reflection signals according to the reflection energy, for example, determine the reflection signal with the largest reflection energy as the reflection signal for distance calculation. And calculating the distance according to a first time when the laser signal is emitted in the current period and a second time when the reflected signal for distance calculation is received, for example, determining a time difference between the first time and the second time, and calculating the distance according to the time difference and the propagation speed of the light. The distance is used for representing the distance from the object to be detected to the distance sensing assembly. The present disclosure does not limit the structure, operation principle, etc. of the distance sensing assembly.
The terminal equipment of the embodiment of the disclosure further comprises a detection component, and the detection component is used for detecting whether the display screen above the distance sensing component is abnormal or not. The display screen abnormality can comprise various abnormal conditions such as display screen fracture, breakage and the like. It will be appreciated by those skilled in the art that the terminal device may include a separate detection component that can be used to detect whether the display screen above the distance sensing assembly is abnormal. For example, a copper ring may be disposed on the display screen above the distance sensing assembly, a detection part (e.g., a processor) of the terminal device may detect an impedance between two points on the copper ring, and when the impedance between the two points is small (about 0), the detection part may determine that the display screen above the distance sensing assembly is detected to be in a normal state. When the impedance between the two points becomes larger (the impedance between the two points becomes larger due to the abnormality of the display screen), the detection part can determine that the display screen above the detection distance sensing assembly is abnormal. In addition, the detection component may also be a detection component included in the distance sensing assembly, which is not limited by the present disclosure.
In one possible implementation, the detection component of the distance sensing component may determine reflected energy of a reflected signal received in a current cycle, determine a reference energy from the reflected energy, and determine that a display screen above the distance sensing component is abnormal when the reference energy is less than or equal to an energy threshold.
For example, the emitting component of the distance sensing assembly emits a periodic laser signal to the display screen. When the laser signal meets an object (such as a display screen, a human ear and the like), part of the laser signal is reflected, and the receiving part of the distance sensing assembly can receive the reflected signal of the laser signal after the laser signal is reflected by the object. The detection component of the distance sensing assembly can determine the reflected signal received in the current period and the energy of the reflected signal.
Fig. 4 is a schematic diagram of a terminal device shown according to an example embodiment. In one possible implementation, the detection component may determine the reflection energy of the reflection signal according to a first time of emitting the laser signal in the current cycle and a receiving time of receiving the reflection signal.
For example, as shown in FIG. 4, the transmitting portion of the distance sensing assembly 12121 emit periodic laser signals towards the display screen. For example, during the current period, the transmitting part 121 is at t0The laser signal is emitted at a time (first time). The emitted laser signal may encounter the display screen 11 (e.g., the display screen 11 located above the distance sensing assembly 12). Part of the laser signal (reflection signal) will be reflected by the display screen 11 and received by the receiving part 122 of the distance sensing assembly 12, for example, the receiving time of the reflection signal is t1The time of day. The detection component determines a reflected signal received in a current cycle and reflected energy of the reflected signal.
In one possible implementation, the detection component may determine the reflection energy of the reflection signal according to a first time of emitting the laser signal in the current cycle and a receiving time of receiving the reflection signal.
An exemplary equation (1) for determining the reflected energy of the reflected signal is given below
Figure BDA0001874546220000051
In the formula (1), e1Representing the reflected energy, t, of the reflected signal0Indicating a first time, t, of the emission of the laser signal in the current cycle1Indicating the time of reception of the reflected signal, f1(x) Representing the received reflected signal.
In this way, the reflected energy of the reflected signal received by the distance sensing assembly can be determined. The present disclosure is not limited as to the manner in which the reflected energy of the reflected signal is determined.
In one possible implementation, as mentioned above, after the emitted laser signal encounters the display screen, part of the laser signal (reflected signal) is reflected back by the display screen. Other laser signals are emitted after penetrating the display screen, and may encounter other objects. E.g., a person's ear, etc., and is reflected back by other objects. At this time, the receiving part may receive a plurality of reflection signals in the current period after the laser signal is reflected by a plurality of objects.
An exemplary determination formula (2) of the reflection energy of the n-th reflection signal is given below
Figure BDA0001874546220000061
In the formula (2), enRepresenting the reflected energy, t, of the nth reflected signal0Indicating a first time, t, of the emission of the laser signal in the current cyclenIndicating the time of reception of the nth reflected signal, fn(x) Represents the received nth reflected signal, where n is a positive integer.
In this way, the reflection energy of each reflection signal can be determined according to each reflection signal received in the current period, the first time of emitting the laser signal in the current period and the receiving time of receiving each reflection signal.
In one possible implementation, part of the n reflected signals that may be received by the receiving component is weaker. For example, when calculating the reflected energy of n reflected signals, a partially reflected signal is a signal reflected from a distant object, and the partially reflected signal is weak. At this point, the determined reflected energy of the reflected signal may be less than a reflected energy threshold (e.g., a preset energy value that may be used to determine whether the reflected signal is valid), and the reception may be ignored. In this way, interference of the weaker reflected signal with the useful signal can be excluded.
In one possible implementation, the detection component may determine a reference energy from the reflected energy. The reference energy is a ground noise, and is formed after a laser signal emitted by the distance sensing assembly is reflected by a display screen (cover glass, for example, the cover glass may include an upper surface and a lower surface) of the terminal device. It should be understood that there are a number of situations that may affect the reference energy (noise floor), such as oil contamination on the surface of the display screen of the terminal equipment, structural changes around the distance sensing assembly, etc. Excessive noise floor can cause the desired signal to be drowned in noise (signal to noise ratio is small), affecting the performance of the distance sensing component.
In one possible implementation, the detection component may determine the reflected energy of the first reflected signal received in the current period as the reference energy.
For example, the detection component may determine the reflected energy of the first reflected signal received in the current period as the reference energy. As described above, the first reflection signal received by the receiving component in the current period may be a reflection signal received by the receiving component after the laser signal is reflected by the display screen. For example, the cover glass of the display screen is thin, the reflected signals of the upper surface and the lower surface can form a first reflected signal, and the energy of the reflected signal is the reference energy.
In this way, the terminal device can determine the reference energy (noise floor) in real time.
In one possible implementation manner, the detection component determines that the display screen above the distance sensing component is abnormal when the reference energy is detected to be less than or equal to an energy threshold.
For example, the detection component may determine that a display screen above the distance sensing assembly is abnormal when detecting that the reference energy is less than or equal to an energy threshold. For example, when the detection component detects that the reference energy (noise floor) is small, for example, 0 or 2 or 3 energy units, indicating that almost no reflected signal reflected by the display screen currently forms the reference energy, it may determine that the display screen above the distance sensing component is abnormal.
Through the mode, the abnormity of the display screen above the distance sensing assembly can be accurately determined. The present disclosure does not limit the value of the energy threshold.
In a possible implementation manner, the control component is used for controlling and reducing the energy density of the laser signal emitted by the emitting component when the display screen above the distance sensing component is abnormal.
For example, when the terminal device determines that the display screen above the distance sensing assembly is abnormal, the control component may control to reduce the energy density of the laser signal emitted by the emitting component in various ways. It should be understood that the control component may be a separate control component of the terminal device, for example, the control component may be a processor of the terminal device, and when the display screen above the distance sensing assembly is abnormal, the processor may reduce the energy density of the laser signal emitted by the emitting component by controlling the distance sensing assembly or the like. The control component may also be a control component included in the distance sensing assembly (e.g., a controller of the distance sensing assembly, etc.), and the present disclosure does not limit the manner of controlling to reduce the energy density of the laser signal emitted by the emitting component.
Through the mode, when the display screen above the distance sensing assembly is determined to be abnormal, the energy density of the laser signal emitted by the emitting component can be reduced through control, the damage to a user caused by the fact that the display screen above the distance sensing assembly is abnormal (such as cracking, breaking and the like) is reduced, the laser signal is directly emitted outwards, and the safety performance of the terminal device is improved.
It should be noted that, when detecting that the display screen above the distance sensing assembly is abnormal, the control component may control to reduce the energy density of the laser signal emitted by the emitting component within a certain time interval (for example, before the display screen is not repaired and the distance sensing assembly is recalibrated), so as to reduce the harm to the user caused by the direct outgoing of the laser signal. The control component can restore the energy density of the laser signal emitted by the emitting component when the condition of restoring the energy density of the laser signal emitted by the emitting component is met, for example, when the distance sensing component calibration instruction is received again or the detection component detects that the display screen above the distance sensing component is normal, so as to realize normal distance measurement of the distance sensing component.
In a possible implementation manner, the control component is configured to, when a display screen above the distance sensing assembly is abnormal, perform at least one of the following operations:
reducing the emission power of the laser signal emitted by the emission component;
adjusting the frequency of the laser signal;
and enlarging the emission angle of the laser signal.
For example, the control component may reduce the energy density of the laser signal emitted by the emitting component in a variety of ways. For example, the control component is a control component of the distance sensing assembly, and the control component can automatically reduce the emission power of the laser signal emitted by the emitting component (for example, reduce the emission power by adjusting the number of laser emission pulses and the current) when the display screen above the distance sensing assembly is determined to be abnormal, so as to reduce the emission power.
Thus, the energy of the laser signal emitted by the laser can be reduced by reducing the emission power of the laser signal emitted by the emitting component, so that the energy density of the emitted laser signal is reduced. The present disclosure does not limit the manner in which the lower transmitting component transmits the transmit power of the laser signal.
In addition, the control component can also realize the reduction of the energy density of the laser signal emitted by the emitting component by adjusting the frequency and the energy of the laser signal, expanding the emitting angle of the laser signal and the like. For example, the control component may adjust the frequency and power of the laser signal by adjusting the structure of an optical resonant cavity (a cavity in which light waves are reflected back and forth to provide optical energy feedback, which is a component of the laser) of the laser transmitter of the transmitting component, so as to make the energy of the transmitted laser signal lower and reduce the energy density of the transmitted laser signal. The emitted laser signal can be diverged by enlarging the emission angle of the laser signal, so that the energy density of the laser signal emitted by the emitting component can be reduced. The present disclosure does not limit the manner of adjusting the frequency of the laser signal and enlarging the emission angle of the laser signal.
FIG. 5 is a schematic diagram of an optical resonant cavity shown in accordance with an exemplary embodiment. As shown in fig. 5, the optical resonant cavity may be formed by two plane or concave spherical mirrors perpendicular to the axis of the active medium, wherein one mirror may be fully reflective (reflectivity 100%) and the other mirror may be partially transmissive. A light source pump emits light that, when incident on an active medium intermediate two mirrors, the medium material effects a change in direction of the light. The light emitted by the light source pump is reflected, scattered and refracted in the optical resonant cavity to change the path. For example, as shown in FIG. 5, any photons that do not move along the axis of the optical cavity will quickly escape the outside of the optical cavity and will no longer contact the active medium. The photons moving along the axis will continue to advance in the optical resonant cavity and continuously travel back and forth to generate oscillation after being reflected by the two reflectors, the photons continuously meet excited particles during the traveling to generate excited radiation, the photons traveling along the axis will continuously proliferate to form strong beams with the same propagation direction, frequency and phase in the optical resonant cavity, and finally the strong beams can be emitted in the direction perpendicular to the reflectors (partially-transmitting reflectors) to form laser signals. Different Vcsel can realize the emission of a plurality of laser signals of 850nm/940 nm.
It will be appreciated that the optical resonator cavity can be used to select light of a certain frequency and uniform direction as the most preferred amplification, while suppressing light of other frequencies and directions. The optical resonant cavity has the following functions: (1) providing feedback energy, and (2) selecting the direction and frequency of the light wave. The frequencies and directions that may exist within the optical resonant cavity are called eigenmodes, longitudinal modes, distinguished by frequency, and transverse modes, distinguished by direction. The radii of curvature and the spacing (cavity length) of the two mirrors determine the eigenmode confinement of the optical resonator cavity. Different types of resonators have different mode structures and mode-limiting characteristics.
In a possible implementation manner, when the control component determines that the display screen above the distance sensing assembly is abnormal, the control component may shift the frequency of the laser emitted by the laser device toward higher and lower bands by adjusting the structure of the optical resonant cavity of the laser emitter of the emitting component, for example, changing the radius of curvature of the optical resonant cavity, adjusting the distance (cavity length) between two reflective plates of the optical resonant cavity, and the like, so that the frequency of the laser selected by the optical resonant cavity shifts out of the infrared laser band, so that the emission power and the emission energy of the emitted laser signal are lower (for example, the laser signal is hardly emitted), and the energy density of the laser signal is reduced. The structure of the optical resonant cavity of the laser emitter of the emitting component can be adjusted to select the emitting direction of the laser signal, for example, the emitting angle of the emitted laser signal can be enlarged, so that the emitted laser signal is dispersed, and the energy density of the laser signal is reduced. The present disclosure does not limit the manner in which the energy density of the laser signal emitted by the emitting component is reduced.
In a possible implementation manner, the terminal device further includes:
and the processor is used for controlling the terminal equipment to display safety prompt information on a display interface when the display screen above the distance sensing assembly is abnormal.
For example, a processor (e.g., an application processor) of the terminal device may control the terminal device to display a safety prompt message on a display interface when a display screen above the distance sensing component is abnormal. For example, when the detection component of the terminal device or the detection component included in the distance sensing component of the terminal device determines that the display screen above the distance sensing component is abnormal, a signal can be reported to the application processor. The application processor can control the terminal equipment to display the safety prompt information on the display interface. For example, the user may be prompted to see the display screen abnormally, not looking directly at the display screen, etc.
Through the mode, when the display screen above the distance sensing assembly is abnormal, the processor controls the terminal equipment to display the safety prompt information on the display interface, so that the safety prompt can be performed on the user, and the safety performance of the terminal equipment is improved. The present disclosure does not limit the form and content of the processor controlling the terminal device to display the safety prompt information on the display interface.
In a possible implementation manner, the detection component may further calibrate the reference energy when only the first reflected signal is received in the current period and the reference energy is greater than or equal to a reference energy threshold.
For example, when the terminal device is still placed on a desktop, the data output by the sensor (e.g., various motion sensors) of the terminal device can determine the state of the terminal device. The detection component may only receive the first reflected signal during the current cycle and determine the reference energy. The reference energy is calibrated when the reference energy is greater than or equal to a reference energy threshold (e.g., the reference energy threshold may be factory-determined by the terminal device). For example, if the reference energy threshold is 10 energy units and the resulting reference energy is determined to be 100 energy units, then the calibration may be performed by subtracting 90 energy units from the reference energy.
Therefore, the reference energy (background noise) can be detected and corrected in real time, the signal-to-noise ratio can be improved by calibrating the reference energy, and the distance calculation accuracy of the distance sensing assembly is guaranteed. The present disclosure does not limit the manner in which the reference energy is calibrated.
In a possible implementation manner, the detecting component is configured to determine a weight of each reflected energy according to the reflected energy of each reflected signal in the current cycle, and adjust the weight of a reference energy in the reflected energy when the weight of the reference energy is greater than or equal to a weight threshold.
For example, the weight of each reflected energy may be determined according to the reflected energy of each reflected signal in the current period. For example, a laser signal is emitted once in the current period, n reflected signals are received (for example, a user is talking through a terminal device), and the reflected energy of the n reflected signals is e1To en。
In a possible implementation manner, while the reflected energy calculation is performed on each received reflected signal, a weight may be dynamically assigned to the reflected energy according to the received reflected energy this time. For example, the weight of the reflected energy may be proportional to the reflected energy, i.e., the greater the reflected energy, the greater the weight assigned to the reflected energy.
An exemplary equation (3) for determining the weight of the reflected energy is given below
Figure BDA0001874546220000101
In the formula (3), wmWeight representing reflected energy of m-th reflected signal, emRepresenting the reflected energy of the m-th reflected signal, e1Representing the reflected energy of the 1 st reflected signal, enRepresenting the reflection energy of the nth reflection signal, wherein n and m are positive integers, n is more than or equal to 2, and the value of m is from 1 ton is between.
In this way, the weight of each reflected energy can be determined to monitor the reference energy (noise floor) according to the weight of each reflected energy. The present disclosure does not limit the manner in which the reflected energy weight is determined.
In one possible implementation, the weight of the reference energy in the reflected energy is adjusted when the weight of the reference energy is greater than or equal to a weight threshold.
For example, as described above, the determined reflected energy includes a reference energy (noise floor), and the weight of the reference energy may be adjusted when the weight of the reference energy is determined to be greater than or equal to the weight threshold. For example, the reference energy is usually determined and recorded with a weight of 0.1 to 0.2, and the reference energy determined in the current period is 0.5, and at this time, the reference energy may be adjusted with a weight, for example, given a smaller weight.
Therefore, by adjusting the weight of the reference energy, the signal to noise ratio can be improved, the interference of the reference energy to useful signals is reduced, and the accuracy of distance calculation of the distance sensing assembly is ensured. The present disclosure does not limit the manner in which the weights of the reference energies are adjusted.
Fig. 6 is a schematic diagram of a terminal device shown according to an example embodiment. For example, the apparatus 800 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, an exercise device, a personal digital assistant, and the like.
Referring to fig. 6, the apparatus 800 may include one or more of the following components: processing component 802, memory 804, power component 806, multimedia component 808, audio component 810, input/output (I/O) interface 812, sensor component 814, and communication component 816.
The processing component 802 generally controls overall operation of the device 800, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing components 802 may include one or more processors 820 to execute instructions to perform all or a portion of the steps of the methods described above. Further, the processing component 802 can include one or more modules that facilitate interaction between the processing component 802 and other components. For example, the processing component 802 can include a multimedia module to facilitate interaction between the multimedia component 808 and the processing component 802.
The memory 804 is configured to store various types of data to support operations at the apparatus 800. Examples of such data include instructions for any application or method operating on device 800, contact data, phonebook data, messages, pictures, videos, and so forth. The memory 804 may be implemented by any type or combination of volatile or non-volatile memory devices such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disks.
Power components 806 provide power to the various components of device 800. The power components 806 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for the apparatus 800.
The multimedia component 808 includes a screen that provides an output interface between the device 800 and a user. In some embodiments, the screen may include a Liquid Crystal Display (LCD) and a Touch Panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive an input signal from a user. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundary of a touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 808 includes a front facing camera and/or a rear facing camera. The front camera and/or the rear camera may receive external multimedia data when the device 800 is in an operating mode, such as a shooting mode or a video mode. Each front camera and rear camera may be a fixed optical lens system or have a focal length and optical zoom capability.
The audio component 810 is configured to output and/or input audio signals. For example, the audio component 810 includes a Microphone (MIC) configured to receive external audio signals when the apparatus 800 is in an operational mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals may further be stored in the memory 804 or transmitted via the communication component 816. In some embodiments, audio component 810 also includes a speaker for outputting audio signals.
The I/O interface 812 provides an interface between the processing component 802 and peripheral interface modules, which may be keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to: a home button, a volume button, a start button, and a lock button.
The sensor assembly 814 includes one or more sensors for providing various aspects of state assessment for the device 800. For example, the sensor assembly 814 may detect the open/closed status of the device 800, the relative positioning of components, such as a display and keypad of the device 800, the sensor assembly 814 may also detect a change in the position of the device 800 or a component of the device 800, the presence or absence of user contact with the device 800, the orientation or acceleration/deceleration of the device 800, and a change in the temperature of the device 800. Sensor assembly 814 may include a proximity sensor configured to detect the presence of a nearby object without any physical contact. The sensor assembly 814 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 814 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.
The communication component 816 is configured to facilitate communications between the apparatus 800 and other devices in a wired or wireless manner. The device 800 may access a wireless network based on a communication standard, such as WiFi, 2G or 3G, or a combination thereof. In an exemplary embodiment, the communication component 816 receives a broadcast signal or broadcast related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 816 further includes a Near Field Communication (NFC) module to facilitate short-range communications. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, Ultra Wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.
In an exemplary embodiment, the apparatus 800 may be implemented by one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), controllers, micro-controllers, microprocessors or other electronic components for performing the above-described methods.
In an exemplary embodiment, a non-transitory computer-readable storage medium comprising instructions, such as the memory 804 comprising instructions, executable by the processor 820 of the device 800 to perform the above-described method is also provided. For example, the non-transitory computer readable storage medium may be a ROM, a Random Access Memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims (9)

1. A terminal device, characterized in that the terminal device comprises:
a display screen;
a distance sensing component, the distance sensing component is located below the display screen, the distance sensing component includes: the emitting component is used for emitting periodic laser signals to the direction of the display screen;
the detection component is used for detecting whether the display screen above the distance sensing component is abnormal or not;
the control component is used for controlling and reducing the energy density of the laser signal emitted by the emitting component when the display screen above the distance sensing component is abnormal;
the distance sensing assembly further comprises: the receiving component is used for receiving a reflected signal of the laser signal after the laser signal is reflected by an object;
the detection component is used for determining the reflection energy of the reflection signal received in the current period, determining reference energy from the reflection energy, and determining that the display screen above the distance sensing component is abnormal when the reference energy is smaller than or equal to an energy threshold value.
2. The apparatus of claim 1, wherein the control component is configured to perform at least one of the following operations when a display screen above the distance sensing assembly is abnormal:
reducing the emission power of the laser signal emitted by the emission component;
adjusting the frequency of the laser signal;
and enlarging the emission angle of the laser signal.
3. The apparatus of claim 1, wherein the terminal device further comprises:
and the processor is used for controlling the terminal equipment to display safety prompt information on a display interface when the display screen above the distance sensing assembly is abnormal.
4. The apparatus of claim 1, wherein the detecting component is configured to determine the reflection energy of the reflection signal according to a first time of emitting the laser signal in the current cycle and a receiving time of receiving the reflection signal.
5. The apparatus of claim 1, wherein the detecting means is configured to determine a reflected energy of a first reflected signal received in a current period as the reference energy.
6. The apparatus of claim 5, wherein the detecting component is configured to calibrate the reference energy when only the first reflected signal is received in a current period and the reference energy is greater than or equal to a reference energy threshold.
7. The apparatus of claim 1, wherein the detecting unit is configured to determine a weight of each reflected energy according to the reflected energy of each reflected signal in the current period, and adjust the weight of a reference energy in the reflected energy when the weight of the reference energy is greater than or equal to a weight threshold.
8. The apparatus of claim 1, wherein the emitting component comprises a vertical cavity surface emitting VCSEL laser.
9. The device of any one of claims 1 to 8, wherein the display screen is a full-face screen.
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009237061A (en) * 2008-03-26 2009-10-15 Funai Electric Co Ltd Laser projector
CN107861170A (en) * 2017-09-27 2018-03-30 深圳奥比中光科技有限公司 Laser safety control device and method
CN108322729A (en) * 2018-02-27 2018-07-24 广东欧珀移动通信有限公司 Control method, control device and the electronic device of laser projection module
CN108398987A (en) * 2018-02-27 2018-08-14 广东欧珀移动通信有限公司 Electronic device

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4483703B2 (en) * 2004-08-04 2010-06-16 セイコーエプソン株式会社 projector
DE102006053579A1 (en) * 2006-11-10 2008-05-15 Jenoptik Automatisierungstechnik Gmbh Safety device for laser working plant comprises passive protection wall which absorbs energy from laser and protective sheet in front of laser which alters when impacted by beam, so that sensor switches off laser using threshold switch

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009237061A (en) * 2008-03-26 2009-10-15 Funai Electric Co Ltd Laser projector
CN107861170A (en) * 2017-09-27 2018-03-30 深圳奥比中光科技有限公司 Laser safety control device and method
CN108322729A (en) * 2018-02-27 2018-07-24 广东欧珀移动通信有限公司 Control method, control device and the electronic device of laser projection module
CN108398987A (en) * 2018-02-27 2018-08-14 广东欧珀移动通信有限公司 Electronic device

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