CN106888057A - The method of reseptance and mobile terminal of a kind of optical signal - Google Patents

Abstract

Embodiments of the present invention provide a method for receiving an optical signal and a mobile terminal. The method is applied in the mobile terminal and includes: sampling the optical signal through an optical signal receiver; calculating the optical parameter value of the optical signal; The optical parameter value determines a receiving area on the optical signal receiver; the optical signal is received in the receiving area. The automatic tracking of the light source is realized. When the light source or the mobile terminal moves, the optical signal can be transmitted to the mobile terminal in a straight line, so that the optical signal received by the mobile terminal is more concentrated, reducing interference, and improving the reliability of the optical signal.

Description

An optical signal receiving method and mobile terminal

technical field

The present invention relates to the technical field of communication, in particular to a method for receiving an optical signal and a mobile terminal.

Background technique

With the development of mobile communication technology, mobile terminals have become an indispensable part of people's lives, enabling barrier-free calls anytime and anywhere, and there are usually many applications installed in mobile terminals, providing many commonly used functions, bringing people's lives Bring convenience.

At present, optical signal communication is a new type of high-speed wireless communication technology, which has the advantages of high bandwidth, no electromagnetic interference, safety and reliability, low energy consumption, low carbon and environmental protection, etc., and is widely used in mobile terminals.

However, since the optical signal propagates in a straight line and is affected by lampshades or occluders, there is a problem of direction in the transmission process of the optical signal. When the light source or the mobile terminal moves, the main optical signal of the light source cannot be transmitted to the light source of the mobile terminal. Signal receiver, the optical signal received by the mobile terminal is scattered and interfered, resulting in low reliability of the optical signal.

Contents of the invention

Embodiments of the present invention provide a method for receiving an optical signal and a mobile terminal, so as to solve the problem of low reliability caused by straight-line propagation of the optical signal.

In a first aspect, a method for receiving an optical signal is provided, which is applied in a mobile terminal, and the method includes:

Sampling the optical signal through the optical signal receiver;

calculating an optical parameter value of the optical signal;

determining a receiving area on the optical signal receiver according to the optical parameter value;

An optical signal is received at the receiving area.

In a second aspect, a mobile terminal is provided, including:

The optical signal sampling module is used to sample the optical signal through the optical signal receiver;

an optical parameter value calculation module, configured to calculate the optical parameter value of the optical signal;

A receiving area determining module, configured to determine a receiving area on the optical signal receiver according to the optical parameter value;

An optical signal receiving module, configured to receive an optical signal in the receiving area.

In this way, in the embodiment of the present invention, the optical parameter value of the optical signal sampled by the optical signal receiver is used to determine the receiving area on the optical signal receiver, and receive the optical signal in this way, so as to realize the automatic tracking of the light source. When the terminal moves, etc., it is ensured that the optical signal can be transmitted to the mobile terminal in a straight line, so that the optical signal received by the mobile terminal is more concentrated, interference is reduced, and the reliability of the optical signal is improved.

Description of drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments of the present invention. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention , for those skilled in the art, other drawings can also be obtained according to these drawings without paying creative labor.

FIG. 1 is a flowchart of an optical signal receiving method according to an embodiment of the present invention.

Fig. 2 is a flowchart of a method for receiving an optical signal according to another embodiment of the present invention.

Fig. 3 is an example diagram of an optical communication area according to an embodiment of the present invention.

Fig. 4 is an example diagram of receiving an optical signal in a receiving area according to an embodiment of the present invention.

FIG. 5A and FIG. 5B are exemplary diagrams of calculating light source angles according to an embodiment of the present invention.

Fig. 6 is a flowchart of a method for receiving an optical signal according to another embodiment of the present invention.

FIG. 7 is a block diagram of a mobile terminal according to one embodiment of the present invention.

Fig. 8 is a block diagram of an optical signal sampling module according to an embodiment of the present invention.

Fig. 9 is a block diagram of a receiving area determining module according to an embodiment of the present invention.

FIG. 10 is a block diagram of a mobile terminal according to another embodiment of the present invention.

FIG. 11 is a block diagram of a mobile terminal according to another embodiment of the present invention.

FIG. 12 is a block diagram of a mobile terminal according to another embodiment of the present invention.

FIG. 13 is a block diagram of a mobile terminal according to another embodiment of the present invention.

FIG. 14 is a block diagram of a mobile terminal according to another embodiment of the present invention.

Fig. 15 is a schematic structural diagram of a mobile terminal according to yet another embodiment of the present invention

detailed description

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

first embodiment

Referring to FIG. 1 , it shows a flowchart of a method for receiving an optical signal according to an embodiment of the present invention, which may specifically include the following steps:

Step 101, sampling an optical signal through an optical signal receiver.

In a specific implementation, the embodiments of the present invention can be applied in mobile terminals, for example, mobile phones, tablet computers, personal digital assistants, wearable devices (such as bracelets, glasses, watches, etc.) and the like.

The operating systems of these mobile terminals may include Android (Android), IOS, Windows Phone, Windows, and the like.

In these mobile terminals, an optical signal receiver capable of receiving optical signals may be configured, and the optical signal receiver may be set individually, or multiple arrays may be set, which is not limited in this embodiment of the present invention.

Wherein, the optical signal may be visible light or invisible light, which is not limited in this embodiment of the present invention.

In the embodiment of the present invention, the optical signal receiver can be called to collect optical signals. The optical signal collection is a sampling operation. The optical signal receiver can receive optical signals in the area where it can receive optical signals, and it is not for a specific The area receives the light signal.

Step 102, calculating optical parameter values of the optical signal.

In the embodiment of the present invention, for the sampled optical signal, optical parameter values, such as light intensity, illuminance, and luminous flux, can be analyzed to find the direction of the light source.

Step 103, determining a receiving area on the optical signal receiver according to the optical parameter value.

In a specific implementation, an effective optical signal can be found according to certain rules through optical parameter values. The effective optical signal generally originates from a light source, and the area where the effective optical signal is located can be used as the receiving area.

Step 104, receiving an optical signal in the receiving area.

If the direction of the light source is determined by the optical parameter value, then the light signal can be received for the receiving area facing the light source.

In this way, in the embodiment of the present invention, the optical parameter value of the optical signal sampled by the optical signal receiver is used to determine the receiving area on the optical signal receiver, and receive the optical signal in this way, so as to realize the automatic tracking of the light source. When the terminal moves, etc., it is ensured that the optical signal can be transmitted to the mobile terminal in a straight line, so that the optical signal received by the mobile terminal is more concentrated, interference is reduced, and the reliability of the optical signal is improved.

second embodiment

Referring to FIG. 2 , it shows a flowchart of a method for receiving an optical signal according to another embodiment of the present invention, which may specifically include the following steps:

In step 201, the optical signal in the full angle range is sampled by an optical information receiver.

In the embodiment of the present invention, the optical signal receiver can be an array, typically, an optical signal receiver array that can be arranged spherically, and each optical signal receiver can receive an optical signal of a point, then the optical signal receiver array It can receive optical signals in the full angle range.

Step 202, calculating optical parameter values of the optical signal.

Step 203, identifying an optical communication area on the optical signal receiver.

In the embodiment of the present invention, according to the optical signal sampled by the optical signal receiver, the connected area detection algorithm of image processing may be used to segment the continuously changing optical connected area according to the intensity and color of the sampled optical signal.

Wherein, the optical communication area may be divided into shapes such as near elliptical domains (a circular domain is regarded as a special elliptical domain), which is not limited in this embodiment of the present invention.

For example, as shown in Figure 3, assuming that the receiving surface of the optical signal receiver is spherical and can receive optical signals in all directions, one light source is received at the upper left and another light source is received at the lower right, then the gray area at the upper left is an optical communication area , the gray area on the lower right is an optical communication area, and these optical communication areas appear as an elliptical domain on the spherical surface.

Step 204, calculating the weight by using the optical parameter value of the optical signal collected in the optical communication area.

Step 205, selecting a receiving area from the divided optical communication areas according to the weight.

In the embodiment of the present invention, the weight of the optical signal collected in the optical communication area can be calculated according to certain rules, and the receiving area of the optical signal can be determined according to the weight, for example, the divided optical communication area with the largest weight can be used as the receiving area.

In an example, assuming that the light parameter values of the light signal include light intensity, illuminance and luminous flux, the weight of the light signal=light intensity*0.3+illuminance*0.3+luminous flux*0.4, where 0.3, 0.3, and 0.4 are respectively light intensity, illuminance, and luminous flux. The weight of illuminance and luminous flux.

In this example, the balance between the intensity of the received optical signal and the size of the receiving area can be taken into consideration, and interference signals such as strong optical signal but small receiving area and weak optical signal but large receiving area can be eliminated to find an effective optical signal.

Of course, the above method of calculating the weight is only an example. When implementing the embodiment of the present invention, other methods of calculating the weight can be set according to the actual situation, such as maximum light intensity, maximum illuminance, maximum luminous flux, maximum light intensity and illuminance, and maximum weighted value of luminous flux , etc., which are not limited in this embodiment of the present invention. In addition, in addition to the foregoing manner of calculating weights, those skilled in the art may also adopt other manners of calculating weights according to actual needs, which is not limited in this embodiment of the present invention.

Step 206, receiving an optical signal in the receiving area.

In the specific implementation, the selected receiving area can be regularized and adjusted in size, and the position with the strongest optical signal (referring to the point with the highest illuminance in the receiving area, the illuminance of this point changes continuously, and the mutation point is excluded) is placed in the receiving area. In the center of the area, under the condition that the illuminance and luminous flux exceed a certain threshold, the edge areas with less contribution are eliminated to reduce the interference of other light sources and ambient light.

As shown in Figure 4, the gray-white area is an optical communication area, and the gray scale represents the strength of the optical signal. The darker the light signal received at the point, the weaker the light signal received at this point, and the brighter the light signal received at this point is stronger. The black circle The enclosed area is the adjusted optical communication area, and the strongest optical signal in the optical communication area is received as an effective optical signal.

Step 207, adjusting the receiving area according to the motion data of the mobile terminal.

In the embodiment of the present invention, when the mobile terminal is moving rapidly, the angle change of the light source can be calculated according to the movement data of the mobile terminal, and the angle change of the light signal can be adjusted in the receiving surface of the optical signal receiver according to the calculated angle change. The location of the receiving area is convenient for quickly locating changes in the direction of the light source due to its own motion.

In one example, as shown in Figure 5A, D is the light source, and the mobile terminal moves horizontally. At the beginning, the optical information receiver is located at position A. After adjusting the receiving area, the angle α can be calculated, and the optical information receiver After moving the position to position B, you can know the distance e between BA, and after adjusting the receiving position, you can calculate the β angle.

At this point, the d distance can be calculated:

Since, d*tanα−d*tanβ=e, and AE−BE=AB, therefore, d=e/(tanα−tanβ).

When the optical information receiver continues to move, the angle change of the light source can be quickly calculated through the moving distance:

For example, when the optical information receiver moves from position B to position C, the moving distance is f, the light source angle is γ, d*tanβ-d*tanγ=f, therefore, angle γ=arctan(tanβ-f/d).

In another example, as shown in Figure 5B, C is the light source. At the beginning, the forward direction of the optical information receiver is position A. After adjusting the receiving area, it can be obtained that the light source is at position A in the forward direction of the position receiver. The direction of the coordinate system is assumed to be ai+bj+ck (i, j, k are coordinate axis vectors), when the optical signal receiver rotates to the positive direction to position B, relative to the original coordinate system, the direction of rotation can be passed The three-direction decomposition rotation angle is expressed as di+ej+fk, and the direction of the light source at position B relative to the forward direction can be expressed as (a-d)i+(b-e)j+(c-f)k.

Certainly, the foregoing manner of calculating the light source is only an example. When implementing the embodiment of the present invention, other manners of calculating the light source may be set according to actual conditions, which is not limited in the embodiment of the present invention. In addition, in addition to the above-mentioned manners for calculating light sources, those skilled in the art may also use other manners for calculating light sources according to actual needs, which is not limited in this embodiment of the present invention.

Step 208, calculating the signal strength of the optical signal received by the optical signal receiver.

Step 209, when the optical signal with the strongest signal strength is outside the receiving area, move the receiving area so that the receiving area receives the optical signal with the strongest signal intensity.

In the implementation of the present invention, the signal strength of the optical signal received by the optical signal receiver can be used as measurement data to determine the center position of the received optical signal, that is, the strongest point of the signal.

Compare the center position of the optical signal with the receiving area (generally represented by the center point), if it is the same position, continue to receive the optical signal in this optical receiving area; if it is a different position, keep the shape and size of the receiving area unchanged , move the receiving area (generally represented by the center point) to the center position of the optical signal, and fine-tune the receiving area to ensure that the receiving area always receives the maximum signal to track the change of light.

Step 210, calculate the signal strength of the optical signal received in the receiving area.

Step 211 , judging whether the signal strength is lower than a preset strength threshold, and if so, returning to step 201 .

In the embodiment of the present invention, it may be detected whether the signal strength of the optical signal received in the receiving area meets the requirements for information reception, that is, whether it is lower than the strength threshold.

If it is lower than the intensity threshold, it means that the intensity of the optical signal in the receiving area is low, which does not meet the requirements for information reception, and the receiving area of the optical information is reselected.

If it is equal to or higher than the intensity threshold, it indicates that the intensity of the optical signal in the receiving area is relatively high, which meets the requirements for information reception, and continues to receive.

Step 212 , judging whether the area of the receiving area is greater than a preset area threshold, if yes, execute step 213 , if not, return to execute step 201 .

Step 213, expanding the area of the receiving area.

In the embodiment of the present invention, it can be judged whether the size of the receiving area exceeds the area threshold. If the size of the receiving area does not exceed the area threshold, the size of the receiving area can be enlarged. If the size of the receiving area exceeds the area threshold, the receiving area of the optical information can be reselected. area.

third embodiment

Referring to FIG. 6 , it shows a flowchart of a method for receiving an optical signal according to another embodiment of the present invention, which may specifically include the following steps:

In step 601, the optical information receiver is rotated sequentially to sample optical signals within multiple angle ranges.

In the embodiment of the present invention, the optical signal receiver can be an array, and each optical signal receiver can receive an optical signal at a point, so the optical signal receiver array can receive an optical signal within a certain angle range.

By rotating the optical information receiver array, the receiving direction is changed in three-dimensional space, so that the optical signal in the full angle range can be received.

Step 602, calculating optical parameter values of the optical signal.

Step 603, calculating the weight by using the optical parameter value of the optical signal collected in the angle range.

Step 604, determine the light source according to the weight.

In the embodiment of the present invention, the weight of the optical signal collected by the optical information receiver in each angle range can be calculated according to certain rules, and the light source can be determined according to the weight, for example, the angle range with the largest weight can be used as the light source direction.

In an example, assuming that the light parameter values of the light signal include light intensity, illuminance and luminous flux, the weight of the light signal=light intensity*0.3+illuminance*0.3+luminous flux*0.4, where 0.3, 0.3, and 0.4 are respectively light intensity, illuminance, and luminous flux. The weight of illuminance and luminous flux.

In this example, the balance between the intensity of the received optical signal and the size of the receiving area can be taken into consideration, and interference signals such as strong optical signal but small receiving area and weak optical signal but large receiving area can be eliminated to find an effective optical signal.

Of course, the above method of calculating the weight is only an example. When implementing the embodiment of the present invention, other methods of calculating the weight can be set according to the actual situation, such as maximum light intensity, maximum illuminance, maximum luminous flux, maximum light intensity and illuminance, and maximum weighted value of luminous flux , etc., which are not limited in this embodiment of the present invention. In addition, in addition to the above-mentioned manners for calculating weights, those skilled in the art may also adopt other manners for calculating weights according to actual needs, which is not limited in this embodiment of the present invention.

Step 605, move the optical information receiver according to the light source to serve as a receiving area.

In the embodiment of the present invention, the optical information receiver can be adjusted to face the light source, and the receiving surface of the optical information receiver serves as a receiving area.

Step 606, receiving an optical signal in the receiving area.

Step 607, calculate the signal strength of the optical signal received by the optical signal receiver.

Step 608: When the optical signal with the strongest signal strength is outside the receiving area, move the receiving area so that the receiving area receives the optical signal with the strongest signal intensity.

Step 609, calculate the signal strength of the optical signal received in the receiving area.

Step 610 , judging whether the signal strength is lower than a preset strength threshold, if yes, return to step 601 .

Step 611, adjust the receiving area according to the motion data of the mobile terminal.

In the embodiment of the present invention, when the mobile terminal is moving rapidly, the angle change of the light source can be calculated according to the motion data of the mobile terminal, and the optical signal receiver can be moved and rotated accordingly according to the calculated angle to keep the optical information receiving The direction in which the device faces the light source is convenient for quickly locating changes in the direction of the light source caused by its own movement.

It should be noted that, for the method embodiment, for the sake of simple description, it is expressed as a series of action combinations, but those skilled in the art should know that the embodiment of the present invention is not limited by the described action sequence, because According to the embodiment of the present invention, certain steps may be performed in other orders or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification belong to preferred embodiments, and the actions involved are not necessarily required by the embodiments of the present invention.

Fourth embodiment

Referring to FIG. 7, a block diagram of a mobile terminal according to an embodiment of the present invention is shown. The mobile terminal 700 shown in FIG. 7 may specifically include the following modules:

An optical signal sampling module 701, configured to sample an optical signal through an optical signal receiver;

An optical parameter value calculation module 702, configured to calculate the optical parameter value of the optical signal;

A receiving area determination module 703, configured to determine a receiving area on the optical signal receiver according to the optical parameter value;

An optical signal receiving module 704, configured to receive an optical signal in the receiving area.

In an embodiment of the present invention, referring to the block diagram of the optical signal sampling module shown in FIG. 8, the optical signal sampling module 701 may further include the following submodules:

The full-angle sampling sub-module 7011 is used to sample the optical signal in the full-angle range through the optical information receiver;

or,

The angle range sampling sub-module 7012 is configured to sequentially rotate the optical information receiver to sample optical signals within multiple angle ranges.

In one embodiment of the present invention, referring to the block diagram of the receiving area determining module shown in FIG. 9, the receiving area determining module 703 may further include the following submodules:

The optical communication area identification sub-module 7031 is used to identify the optical communication area on the optical signal receiver;

The first weight calculation sub-module 7032 is configured to calculate the weight by using the optical parameter value of the optical signal collected in the optical communication area;

The split optical communication area selection sub-module 7033 is used to select a receiving area from the split optical communication area according to the weight;

or,

The second weight calculation sub-module 7034 is used to calculate the weight by using the optical parameter value of the optical signal collected in the angle range;

A light source determination sub-module 7035, configured to determine the light source according to the weight;

The optical information receiver moving sub-module 7036 is configured to move the optical information receiver according to the light source to serve as a receiving area.

On the basis of FIG. 7, optionally, referring to FIG. 10, the mobile terminal 700 may further include the following modules:

A receiving area adjustment module 705, configured to adjust the receiving area according to the motion data of the mobile terminal.

On the basis of FIG. 7, optionally, referring to FIG. 11, the mobile terminal 700 may further include the following modules:

A first signal strength calculation module 706, configured to calculate the signal strength of the optical signal received by the optical signal receiver;

The receiving area moving module 707 is configured to move the receiving area so that the receiving area receives the optical signal with the strongest signal strength when the optical signal with the strongest signal strength is outside the receiving area.

On the basis of FIG. 7, optionally, referring to FIG. 12, the mobile terminal 700 may further include the following modules:

A second signal strength calculation module 708, configured to calculate the signal strength of the optical signal received in the receiving area;

The intensity threshold judgment module 709 is configured to judge whether the signal strength is lower than a preset strength threshold, and if so, call the optical signal sampling module 701 back.

On the basis of FIG. 7, optionally, referring to FIG. 13, the mobile terminal 700 may further include the following modules:

The area threshold judging module 710 is used to judge whether the area of the receiving area is larger than the preset area threshold, if so, call the area expanding module 711, if not, return and call the optical signal sampling module 701;

An area expanding module 711, configured to expand the area of the receiving area.

The mobile terminal 700 can implement various processes implemented by the mobile terminal in the method embodiments shown in FIG. 1 to FIG. 6 , and details are not repeated here to avoid repetition.

In this way, in the embodiment of the present invention, the optical parameter value of the optical signal sampled by the optical signal receiver is used to determine the receiving area on the optical signal receiver, and receive the optical signal in this way, so as to realize the automatic tracking of the light source. When the terminal moves, etc., it is ensured that the optical signal can be transmitted to the mobile terminal in a straight line, so that the optical signal received by the mobile terminal is more concentrated, interference is reduced, and the reliability of the optical signal is improved.

fifth embodiment

FIG. 14 is a block diagram of a mobile terminal according to another embodiment of the present invention. The mobile terminal 1400 shown in FIG. 14 includes: at least one processor 1401 , a memory 1402 , at least one network interface 1404 and other user interfaces 1403 . Various components in the mobile terminal 1400 are coupled together through a bus system 1405 . It can be understood that the bus system 1405 is used to realize connection and communication between these components. In addition to the data bus, the bus system 1405 also includes a power bus, a control bus and a status signal bus. However, the various buses are labeled as bus system 1405 in FIG. 14 for clarity of illustration.

Wherein, the user interface 1403 may include a display, a keyboard or a pointing device (for example, a mouse, a trackball (trackball), a touch panel or a touch screen, and the like.

It can be understood that the memory 1402 in the embodiment of the present invention may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. Among them, the non-volatile memory can be read-only memory (Read-OnlyMemory, ROM), programmable read-only memory (ProgrammableROM, PROM), erasable programmable read-only memory (ErasablePROM, EPROM), electrically erasable Programming read-only memory (Electrically EPROM, EEPROM) or flash memory. The volatile memory may be random access memory (Random Access Memory, RAM), which acts as an external cache. By way of illustration and not limitation, many forms of RAM are available such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), Double Data Rate Synchronous Dynamic Random Access Memory (DoubleDataRateSDRAM, DDRSDRAM), Enhanced Synchronous Dynamic Random Access Memory (Enhanced SDRAM, ESDRAM), Synchronous Connection Dynamic Random Access Memory (SynchlinkDRAM, SLDRAM) and Direct Memory Bus Random Access Memory (Direct Rambus RAM, DRRAM). The memory 1402 of the systems and methods described by embodiments of the present invention is intended to include, but is not limited to, these and any other suitable types of memory.

In some implementations, the memory 1402 stores the following elements, executable modules or data structures, or their subsets, or their extended sets: an operating system 14021 and an application program 14022 .

Among them, the operating system 14021 includes various system programs, such as framework layer, core library layer, driver layer, etc., for realizing various basic services and processing hardware-based tasks. The application program 14022 includes various application programs, such as a media player (MediaPlayer), a browser (Browser), etc., and is used to realize various application services. The program for realizing the method of the embodiment of the present invention may be included in the application program 14022 .

In the embodiment of the present invention, by calling the program or instruction stored in the memory 1402, specifically, the program or instruction stored in the application program 14022, the processor 1401 is used to sample the optical signal through the optical signal receiver; The optical parameter value of the optical signal; determine the receiving area on the optical signal receiver according to the optical parameter value; receive the optical signal in the receiving area.

The methods disclosed in the foregoing embodiments of the present invention may be applied to the processor 1401 or implemented by the processor 1401 . The processor 1401 may be an integrated circuit chip with signal processing capability. In the implementation process, each step of the above method may be implemented by an integrated logic circuit of hardware in the processor 1401 or instructions in the form of software. The above-mentioned processor 1401 may be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application-specific integrated circuit (Application Specific Integrated Circuit, ASIC), an off-the-shelf programmable gate array (Field Programmable Gate Array, FPGA) or other programmable logic devices, discrete gates Or transistor logic devices, discrete hardware components. Various methods, steps and logic block diagrams disclosed in the embodiments of the present invention may be implemented or executed. A general-purpose processor may be a microprocessor, or the processor may be any conventional processor, or the like. The steps of the methods disclosed in the embodiments of the present invention may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module can be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, register. The storage medium is located in the memory 1402, and the processor 1401 reads the information in the memory 1402, and completes the steps of the above method in combination with its hardware.

It can be understood that the embodiments described in the embodiments of the present invention may be implemented by hardware, software, firmware, middleware, microcode or a combination thereof. For hardware implementation, the processing unit can be implemented in one or more application-specific integrated circuits (Application Specific Integrated Circuits, ASIC), digital signal processor (Digital Signal Processing, DSP), digital signal processing device (DSPDevice, DSPD), programmable logic device (ProgrammableLogicDevice, PLD ), Field-Programmable Gate Array (Field-Programmable GateArray, FPGA), general-purpose processor, controller, microcontroller, microprocessor, other electronic units for performing the functions described in this application, or a combination thereof.

For software implementation, the techniques described in the embodiments of the present invention may be implemented through modules (such as procedures, functions, etc.) that execute the functions described in the embodiments of the present invention. Software codes can be stored in memory and executed by a processor. Memory can be implemented within the processor or external to the processor.

Optionally, the processor 1401 is further configured to: use the optical information receiver to sample optical signals in a full range of angles; or rotate the optical information receiver in sequence to sample optical signals in multiple angle ranges.

Optionally, the processor 1401 is further configured to: identify an optical communication area on the optical signal receiver; calculate a weight by using an optical parameter value of an optical signal collected in the optical communication area; Select the receiving area in the optical communication area; or, calculate the weight by using the optical parameter value of the optical signal collected in the angle range; determine the light source according to the weight; move the optical information receiver according to the light source as the receiving area.

Optionally, the processor 1401 is further configured to: adjust the receiving area according to the motion data of the mobile terminal.

Optionally, the processor 1401 is further configured to: calculate the signal strength of the optical signal received by the optical signal receiver; when the optical signal with the strongest signal strength is outside the receiving area, move the receiving area, so that the receiving area receives the optical signal with the strongest signal strength.

Optionally, the processor 1401 is further configured to: calculate the signal strength of the optical signal received in the receiving area; determine whether the signal strength is lower than a preset strength threshold, and if so, return to execute the process of passing the optical signal The step in which a receiver samples an optical signal.

Optionally, the processor 1401 is further configured to: determine whether the area of the receiving area is greater than a preset area threshold, if yes, expand the area of the receiving area, and if not, return to execute the optical signal receiver Steps for sampling an optical signal.

The mobile terminal 1400 is capable of implementing various processes implemented by the mobile terminal in the foregoing embodiments, and details are not repeated here to avoid repetition.

In this way, in the embodiment of the present invention, the optical parameter value of the optical signal sampled by the optical signal receiver is used to determine the receiving area on the optical signal receiver, and receive the optical signal in this way, so as to realize the automatic tracking of the light source. When the terminal moves, etc., it is ensured that the optical signal can be transmitted to the mobile terminal in a straight line, so that the optical signal received by the mobile terminal is more concentrated, interference is reduced, and the reliability of the optical signal is improved.

Sixth embodiment

Fig. 15 is a schematic structural diagram of a mobile terminal according to another embodiment of the present invention. Specifically, the mobile terminal 1500 in FIG. 15 may be a mobile phone, a tablet computer, a personal digital assistant (Personal Digital Assistant, PDA), or a vehicle-mounted computer.

Mobile terminal 1500 in FIG.

Wherein, the input unit 1530 can be used to receive number or character information input by the user, and generate signal input related to the user setting and function control of the mobile terminal 1500 . Specifically, in the embodiment of the present invention, the input unit 1530 may include a touch panel 1531 . The touch panel 1531, also referred to as a touch screen, can collect user's touch operations on or near it (for example, the user's operation on the touch panel 1531 using any suitable object or accessory such as a finger, a stylus), and The specified program drives the corresponding connected device. Optionally, the touch panel 1531 may include two parts, a touch detection device and a touch controller. Among them, the touch detection device detects the user's touch orientation, and detects the signal brought by the touch operation, and transmits the signal to the touch controller; the touch controller receives the touch information from the touch detection device, converts it into contact coordinates, and sends it to the to the processor 1560, and can receive and execute commands sent by the processor 1560. In addition, the touch panel 1531 can be implemented in various types such as resistive, capacitive, infrared, and surface acoustic wave. In addition to the touch panel 1531, the input unit 1530 may also include other input devices 1532, which may include but not limited to physical keyboards, function keys (such as volume control buttons, switch buttons, etc.), trackballs, mice, joysticks, etc. one or more of.

Wherein, the display unit 1540 can be used to display information input by the user or information provided to the user and various menu interfaces of the mobile terminal 1500 . The display unit 1540 may include a display panel 1541, and optionally, the display panel 1541 may be configured in the form of an LCD or an organic light-emitting diode (Organic Light-Emitting Diode, OLED).

It should be noted that the touch panel 1531 can cover the display panel 1541 to form a touch display screen. When the touch display screen detects a touch operation on or near it, it is sent to the processor 1560 to determine the type of the touch event, and then the processor The 1560 provides corresponding visual output on the touch display screen according to the type of the touch event.

The touch display screen includes an application program interface display area and a common control display area. The arrangement of the display area of the application program interface and the display area of the commonly used controls is not limited, and may be an arrangement in which the two display areas can be distinguished, such as vertical arrangement, left-right arrangement, and the like. The application program interface display area can be used to display the interface of the application program. Each interface may include at least one interface element such as an icon of an application program and/or a widget desktop control. The application program interface display area can also be an empty interface without any content. The commonly used control display area is used to display controls with a high usage rate, for example, application icons such as setting buttons, interface numbers, scroll bars, and phonebook icons.

Wherein the processor 1560 is the control center of the mobile terminal 1500, which uses various interfaces and lines to connect the various parts of the whole mobile phone, and runs or executes the software programs and/or modules stored in the first memory 1521, and calls the software programs and/or modules stored in the second memory 1521. The data in the memory 1522 executes various functions of the mobile terminal 1500 and processes data, so as to monitor the mobile terminal 1500 as a whole. Optionally, the processor 1560 may include one or more processing units.

In the embodiment of the present invention, by calling the software programs and/or modules stored in the first memory 1521 and/or the data in the second memory 1522, the processor 1560 is used to acquire the Sampling; calculating an optical parameter value of the optical signal; determining a receiving area on the optical signal receiver according to the optical parameter value; receiving an optical signal in the receiving area.

Optionally, the processor 1560 is further configured to: use the optical information receiver to sample optical signals in a full angle range; or rotate the optical information receiver in sequence to sample optical signals in multiple angle ranges.

Optionally, the processor 1560 is further configured to: identify an optical communication area on the optical signal receiver; calculate a weight by using an optical parameter value of an optical signal collected in the optical communication area; Select the receiving area in the optical communication area; or, calculate the weight by using the optical parameter value of the optical signal collected in the angle range; determine the light source according to the weight; move the optical information receiver according to the light source as the receiving area.

Optionally, the processor 1560 is further configured to: adjust the receiving area according to the motion data of the mobile terminal.

Optionally, the processor 1560 is further configured to: calculate the signal strength of the optical signal received by the optical signal receiver; when the optical signal with the strongest signal strength is outside the receiving area, move the receiving area, so that the receiving area receives the optical signal with the strongest signal strength.

Optionally, the processor 1560 is further configured to: calculate the signal strength of the optical signal received in the receiving area; determine whether the signal strength is lower than a preset strength threshold, and if so, return to execute the process of passing the optical signal The step in which a receiver samples an optical signal.

Optionally, the processor 1560 is further configured to: determine whether the area of the receiving area is greater than a preset area threshold, if yes, enlarge the area of the receiving area, and if not, return to execute the optical signal receiver Steps for sampling an optical signal.

It can be seen that in the embodiment of the present invention, the optical parameter value of the optical signal sampled by the optical signal receiver is used to determine the receiving area on the optical signal receiver, and receive the optical signal in this way, so as to realize the automatic tracking of the light source. When the terminal moves, etc., it is ensured that the optical signal can be transmitted to the mobile terminal in a straight line, so that the optical signal received by the mobile terminal is more concentrated, interference is reduced, and the reliability of the optical signal is improved.

Those skilled in the art can appreciate that the units and algorithm steps of the examples described in conjunction with the embodiments disclosed in the embodiments of the present invention can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are executed by hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art may use different methods to implement the described functions for each specific application, but such implementation should not be regarded as exceeding the scope of the present invention.

Those skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the above-described system, device and unit can refer to the corresponding process in the foregoing method embodiment, which will not be repeated here.

In the embodiments provided in this application, it should be understood that the disclosed devices and methods may be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or May be integrated into another system, or some features may be ignored, or not implemented. In another point, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit.

If the functions described above are realized in the form of software function units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the essence of the technical solution of the present invention or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: various media capable of storing program codes such as U disk, mobile hard disk, ROM, RAM, magnetic disk or optical disk.

The above is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Anyone skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present invention. Should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims (14)

1. A method for receiving an optical signal, the method being applied in a mobile terminal, the method comprising:

sampling the optical signal by an optical signal receiver;

calculating an optical parameter value of the optical signal;

determining a receiving area on the optical signal receiver according to the optical parameter value;

an optical signal is received at the receiving area.

2. The method of claim 1, wherein the step of sampling the optical signal by the optical signal receiver comprises:

sampling the optical signal in the full angle range through an optical information receiver;

or,

the optical information receiver is sequentially rotated to sample the optical signals over a plurality of angular ranges.

3. The method of claim 2, wherein said step of determining a reception area at said optical signal receiver based on said optical parameter value comprises:

identifying an optical communication region on the optical signal receiver;

calculating a weight by using an optical parameter value of an optical signal collected in the optical communication region;

selecting a receiving area from the split optical communication areas according to the weight;

or,

calculating a weight using the optical parameter values of the optical signals collected over the angular range;

determining a light source according to the weight;

and moving the optical information receiver according to the light source to serve as a receiving area.

4. The method of any of claims 1-3, wherein after the step of receiving an optical signal at the receiving area, the method further comprises:

and adjusting the receiving area according to the motion data of the mobile terminal.

5. The method of any of claims 1-3, wherein after the step of receiving an optical signal at the receiving area, the method further comprises:

calculating the signal intensity of the optical signal received by the optical signal receiver;

and when the optical signal with the strongest signal strength is outside the receiving area, moving the receiving area so that the receiving area receives the optical signal with the strongest signal strength.

6. The method of any of claims 1-3, wherein after the step of receiving an optical signal at the receiving area, the method further comprises:

calculating a signal strength of the optical signal received at the receiving area;

and judging whether the signal intensity is lower than a preset intensity threshold value, if so, returning to the step of sampling the optical signal through the optical signal receiver.

7. The method of any of claims 1-3, wherein after the step of receiving an optical signal at the receiving area, the method further comprises:

and judging whether the area of the receiving area is larger than a preset area threshold value or not, if so, enlarging the area of the receiving area, and if not, returning to the step of sampling the optical signal through the optical signal receiver.

8. A mobile terminal, comprising:

the optical signal sampling module is used for sampling the optical signal through the optical signal receiver;

an optical parameter value calculation module for calculating an optical parameter value of the optical signal;

a receiving area determining module for determining a receiving area on the optical signal receiver according to the optical parameter value;

and the optical signal receiving module is used for receiving the optical signal in the receiving area.

9. The mobile terminal of claim 8, wherein the optical signal sampling module comprises:

the full-angle sampling submodule is used for sampling the optical signals in the full-angle range through the optical information receiver;

or,

and the angle range sampling submodule is used for sequentially rotating the optical information receiver so as to sample the optical signals in a plurality of angle ranges.

10. The mobile terminal of claim 9, wherein the reception area determining module comprises:

an optical communication area identification submodule for identifying an optical communication area on the optical signal receiver;

the first weight calculation submodule is used for calculating the weight by adopting the optical parameter value of the optical signal collected in the optical communication area;

a divided optical communication region selection submodule for selecting a reception region from the divided optical communication regions according to the weight;

or,

the second weight calculation submodule is used for calculating the weight by adopting the optical parameter value of the optical signal collected in the angle range;

a light source determination submodule for determining a light source in accordance with the weight;

and the optical information receiver moving submodule is used for moving the optical information receiver according to the light source to serve as a receiving area.

11. The mobile terminal of any of claims 8-10, further comprising:

and the receiving area adjusting module is used for adjusting the receiving area according to the motion data of the mobile terminal.

12. The mobile terminal of any of claims 8-10, further comprising:

the first signal intensity calculating module is used for calculating the signal intensity of the optical signal received by the optical signal receiver;

and the receiving area moving module is used for moving the receiving area to enable the receiving area to receive the optical signal with the strongest signal intensity when the optical signal with the strongest signal intensity is outside the receiving area.

13. The mobile terminal of any of claims 8-10, further comprising:

a second signal strength calculation module, configured to calculate a signal strength of the optical signal received at the receiving area;

and the intensity threshold judging module is used for judging whether the signal intensity is lower than a preset intensity threshold, and if so, returning to call the optical signal sampling module.

14. The mobile terminal of any of claims 8-10, further comprising:

the area threshold value judging module is used for judging whether the area of the receiving area is larger than a preset area threshold value or not, if so, the area enlarging module is called, and if not, the optical signal sampling module is returned to be called;

an area enlarging module for enlarging an area of the receiving area.