Patent Description:
When a terminal (such as a mobile phone, a tablet, etc.) with a photo or video function is capturing an image, a camera needs a sufficient amount of light to ensure the sharpness of the captured image.

In order to increase the amount of light entering the camera, the terminal usually provides a light supplement lamp for the camera. When the light supplement lamp is turned on, light reflected from scenery into the camera increases, ensuring the sharpness of photographing of the camera.

<CIT> relates to a light supplement module, comprising a circuit substrate, a plurality of Light Emitting Diodes (LED) having different colors disposed in an array on the circuit substrate and a light guiding layer disposed on an upper layer of the plurality of LEDs. <CIT> describes systems and techniques for color temperature analysis and matching. For example, three or more camera flash LEDs of different output colors can be used to match any of a range of ambient color temperatures in a non-linear space on the black body curve.

<CIT> relates to a LED illumination device including R, G, B LEDs to be mounted on a camera. A PWM control circuit is used to control a voltage applied to the LED group.

<CIT> relates to a mobile terminal including a light source, the fill light intensity is determined according to a color temperature of a preview image, the color temperature being obtained by dividing the preview image into MxN blocks and analyzing the blocks.

The current invention is defined by the independent claims <NUM> and <NUM>, preferred features are described in the dependent claims.

It is to be understood that both the foregoing general description and the following detailed description are illustrative and explanatory only and are not restrictive of the present disclosure.

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate aspects consistent with the present disclosure, and together with the description, serve to explain the principles of the present disclosure.

The specific aspects of the present disclosure, which have been illustrated by the accompanying drawings described above, will be described in detail below. These accompanying drawings and description are not intended to limit the scope of the present disclosure in any manner, but to explain the concept of the present disclosure to those skilled in the art via referencing specific aspects.

Reference will now be made in detail to exemplary aspects, examples of which are illustrated in the accompanying drawings. The implementations set forth in the following description of illustrative aspects do not represent all implementations consistent with the disclosure. Instead, they are merely examples of apparatuses and methods consistent with aspects related to the disclosure as recited in the appended claims.

The present aspect provides a light supplement module. <FIG> is a side cross-sectional view illustrating a light supplement module according to an exemplary aspect of the present disclosure. The light supplement module may be a light supplement module and includes a circuit substrate <NUM> and an LED array <NUM> disposed on the circuit substrate <NUM>. The LED array <NUM> includes a plurality of Light Emitting Diodes (LEDs), and a light guiding layer <NUM> is disposed separate to the LED.

The circuit substrate <NUM> may be a Printed Circuit Board (PCB) or a Flexible Printed Circuit Board (FPCB). A plurality of contacts are disposed on the circuit substrate <NUM>, and each contact corresponds to one LED.

Colors of at least two LEDs in the LED array <NUM> are different. Light rays emitted from the LEDs of different color temperatures are mixed to obtain a new light ray with a different color temperature range. The light supplement module uses the mixed light ray to supplement a camera.

An upper layer of the n LEDs is provided with a light guiding layer <NUM> for mixing light of different colors. When each LED is colorful, the light guiding layer <NUM> is disposed on an outer layer of each LED, or one light guiding layer <NUM> is disposed separate to the plurality of LEDs, and the plurality of LEDs share one light guiding layer <NUM>. When the LED is a monochromatic LED, the light guiding layer <NUM> is disposed on the outer layer of the plurality of LEDs. For example, a red LED <NUM>, a green LED <NUM> and a blue LED <NUM> are regarded as a group, and one light guiding layer <NUM> is disposed on the outer layers of the three LEDs <NUM>, or one light guiding layer <NUM> is disposed on the outer layer of all the LEDs, and all the LEDs share one light guiding layer <NUM>, thereby achieving the purpose of mixing light of different colors. In the aspect, the number and luminous color of LEDs included in each light guiding layer <NUM> are not limited.

Optionally, n Light Emitting Diodes (LEDs) are disposed in an array on the circuit substrate, n being an integer greater than <NUM>, and there are at least three LEDs having different colors.

In summary, the present aspect provides the plurality of LED lamps with different color temperature ranges (different colors) on the circuit substrate <NUM>, by changing colors of the plurality of LED lamps, or changing a light-emitting ratio of the LEDs of different colors, the camera is provided with complementary light of different color temperatures to achieve the purpose of personalized light supplement.

A red sub-LED, a green sub-LED and a blue sub-LED are packaged in at least one of the n LEDs disposed in the array. For example, each LED may emit light of different colors. Exemplarily, each LED includes therein a luminous body capable of emitting red, green and blue light, and by changing a relative brightness ratio of each luminous body, or changing light and shade of the sub-LED of each color, light of different color temperatures may be obtained.

Optionally, each of the n LEDs disposed in the array is monochromatic. For example, the n LEDs disposed in the array include a red LED, a green LED and a blue LED. The n LEDs form a color LED group. Exemplarily, in the color LED group, each LED may emit only one color of light, and light of different color temperatures may be obtained by changing the relative brightness ratio of each LED. For example, the color LED group includes three colors, namely, a red LED <NUM>, a green LED <NUM>, and a blue LED <NUM>. To obtain warm light, luminance of the red LED <NUM> may be increased, and luminance of the green LED <NUM> and the blue LED <NUM> may be lowered. It is also possible to increase the lighting number of the red LED <NUM> or to reduce the lighting number of the green LED <NUM> or the blue LED <NUM>.

The n LEDs disposed in the array may also include a color LED and a monochrome LED at the same time. The proportion of each type of LED is not limited in the present aspect.

In summary, in the present aspect, by adopting an LED capable of emitting at least <NUM> unit color lights, and adjusting the color temperature light of each LED, the color temperature light meeting the demand is obtained, and individual needs of users are satisfied.

<FIG> is a lateral sectional view illustrating a light supplement module according to an exemplary aspect of the present disclosure. The circuit substrate <NUM> is electrically connected to the color temperature control chip <NUM>, and the color temperature control chip <NUM> is used to control light emitting state of each LED. For example, by controlling the brightness of each LED, or controlling the color of each LED, and adjusting the proportion of light of LEDs having different colors, the purpose of adjusting the color temperature of the LED is achieved.

The light supplement module further includes a processor, and the processor is electrically connected to the color temperature control chip <NUM>. A connection manner includes a Serial Peripheral Interface (SPI) or a serial interface, and the connection manner is not limited in this aspect. The processor is also electrically connected to a color temperature sensor, and the connection manner includes an SPI interface or an Inter-Integrated Circuit (IIC) interface. The connection manner is not limited in the aspect.

The color temperature sensor is used to collect data of ambient color temperature and send the data of ambient color temperature to the processor. After obtaining the data of ambient color temperature, the processor calculates a value of ambient color temperature according to the data of ambient color temperature, and sends the value of ambient color temperature to the color temperature control chip <NUM>. The color temperature control chip <NUM> adjusts the overall color temperature of the plurality of LEDs according to the value of ambient color temperature. The value of ambient color temperature is calculated based on wavelength and frequency of light in ambient light. For example, a longer wavelength indicates a higher value of ambient color temperature.

Optionally, the processor further performs color temperature analysis on a captured preview image to obtain the value of ambient color temperature.

The device or terminal displays a captured preview image on a display area (such as a display screen) before capturing, and the captured preview image is used to preview status of a captured sample before capturing, so that the user may adjust relevant capturing data in advance. Exemplarily, the processor divides the captured preview image to form a plurality of areas, and separately analyzes image data in each area to obtain the value of ambient color temperature.

Exemplarily, the processor divides the captured preview image to form a plurality of areas, and separately analyzes image data in each area to obtain the value of ambient color temperature.

Each of the LEDs disposed in the array is disposed in parallel with each other. That is, the lighting state of each LED may be individually controlled. When it is detected that the value of ambient color temperature is lower than an expected value (or a preset reference value of color temperature), the processor and the color temperature control chip <NUM> starts the light supplement module, controls the light emitting state of the LED in the light supplement module, increases the proportion of red light, or reduces the proportion of green light and blue light, and supplements light with high value of color temperature to the camera. When it is detected that the value of ambient color temperature is higher than the expected value (or the preset reference value of color temperature), the processor and the color temperature control chip <NUM> starts the light supplement module, controls the light emitting state of the LED in the light supplement module, reduces the proportion of red light, or increases the proportion of green light and blue light, and supplements light with low value of color temperature to the camera. Exemplarily, when the value of ambient color temperature and the preset reference value of color temperature have a difference, the color temperature control chip uses a negative feedback mechanism to adjust the overall color temperature of the plurality of LEDs, so that the complementary light emitted by the light supplement module may make the ambient light color temperature of the object being captured reach or close to the reference value of color temperature.

The present aspect sets the color temperature sensor or detects the value of ambient color temperature according to the captured preview image, the light supplement module is started when the value of color temperature is lower than (or higher than) the expected value or preset reference value of color temperature, and the color temperature state of the captured image is adjusted by controlling the light emitting state of the LEDs in the light supplement module. Since the color temperature in the image is the color temperature state of real ambient, it is possible to effectively avoid a distortion problem in related art due to changing the color temperature of the shot image by an algorithm.

The light supplement module further includes a light homogenizing layer disposed on an upper layer of the light guiding layer or between the light guiding layer and the n LEDs. Exemplarily, the light homogenizing layer includes at least one kind of a diffusion layer or a light homogenizing lens. A relative positional relationship between the light homogenizing lens, the LEDs and the light guiding layer is not limited. The diffusion layer is used to make the light emitted by the light supplement module more uniform and scattered, and softer, so that the shot image is more natural. The light homogenizing lens is used to make brightness of the light in the light transmitting area more uniform.

An interval of the overall color temperature of the n LEDs includes <NUM> Kelvin to <NUM> Kelvin. Due to the wide range of color temperature of the light supplement module, it may meet usage needs of most users and scenarios.

The present disclosure further provides a light supplement control method for the light supplement module, the light supplement module includes: a circuit substrate; n Light Emitting Diodes (LED) disposed in an array on the circuit substrate, n being an integer greater than <NUM>, and there being at least two LEDs having different colors; and a light guiding layer is disposed on an upper layer of the n LEDs; wherein, the LEDs are color LEDs, or the n LEDs constitute a color LED group; the light supplement control method includes the following steps.

An ambient parameter of current capturing ambient is obtained.

The ambient parameter includes a wavelength and a frequency of the light in the ambient, and brightness and color temperature of the light in the ambient are calculated from the wavelength and frequency of the light.

Overall brightness and/or overall color temperature of the n LEDs disposed in the array on the circuit substrate are adjusted.

In summary, in the present aspect, a plurality of LEDs are arranged on the circuit substrate in the array, and the colors of the at least two LEDs are different. By adjusting the light emitting states of the LEDs of different color temperatures, the overall color temperature after mixing the light is obtained, thereby achieving the purpose of supplementing light with different color temperature for the camera.

<FIG> is a flowchart illustrating a light supplement control method according to an exemplary aspect of the present disclosure. The light supplement control method includes following steps.

In step <NUM>, data of ambient color temperature is collected.

The color temperature sensor is used to collect the data of ambient color temperature. The data of ambient color temperature includes a wavelength, a frequency and a light intensity of the ambient light. The color temperature sensor sends the collected data of ambient color temperature to the processor for processing and calculation. The processor is a device or component with computing power. Exemplarily, the processor includes a Central Processing Unit (CPU) or an Internet Service Provider (ISP).

In step <NUM>, a value of ambient color temperature is calculated according to the data of ambient color temperature.

After receiving the data of ambient color temperature, the processor calculates the value of ambient color temperature according to the data of ambient color temperature, and sends the value of ambient color temperature to the color temperature control chip.

In step <NUM>, the overall color temperature of the n LEDs is adjusted according to the value of ambient color temperature.

After receiving the value of ambient color temperature sent by the processor, the color temperature control chip adjusts the overall color temperature of the plurality of LEDs according to the value of ambient color temperature.

In summary, the present aspect uses the color temperature sensor to collect the data of ambient color temperature, and uses the processor to calculate the value of ambient color temperature according to the data of ambient color temperature, and the color temperature control chip adjusts the overall color temperature of the LEDs in the light supplement module according to the value of ambient color temperature, thereby providing the light with appropriate color temperature for the camera.

<FIG> is a flowchart illustrating a light supplement control method according to another exemplary aspect of the present disclosure. The light supplement control method includes following steps.

In step <NUM>, color temperature analysis is performed on a captured preview image to obtain the value of ambient color temperature.

The terminal displays the captured preview image before capturing scenery.

The processor performs color temperature analysis according to the captured preview image to obtain the value of ambient color temperature. Exemplarily, the processor divides the captured preview image to form a plurality of areas, and separately analyzes image data in each area to obtain the value of ambient color temperature.

In summary, the method provided in this aspect obtains the value of ambient color temperature using the algorithm by analyzing the scenery in the captured preview image, and there is no need to set the color temperature sensor separately, thereby saving hardware cost and space of the terminal.

In the above aspect, adjusting the overall color temperature of the n LEDs according to the value of ambient color temperature is achieved by adjusting the overall color temperature of the n LEDs according to the value of ambient color temperature and the reference color value of temperature using the negative feedback mechanism. The reference value of color temperature is determined according to the white balance requirement. <FIG> is a flowchart illustrating a method for adjusting the overall color temperature of the n LEDs according to another exemplary aspect of the present disclosure. In conjunction with <FIG>, for the above step <NUM> or step <NUM>, the method for adjusting the overall color temperature of the n LEDs includes the following steps.

In step <NUM>, the reference value of color temperature is determined according to a white balance requirement.

In step <NUM>, according to a difference between the value of ambient color temperature and the reference value of color temperature, a target group PWM signal is determined from at least two sets of control parameters according to the negative feedback mechanism.

Each set of the control parameters includes n PWM signals used for controlling the overall color temperature of the n LEDs to be a target color temperature, and the n PWM signals correspond to the n LEDs. In conjunction with Table <NUM>:.

a column of color temperature in Table <NUM> indicates the overall color temperature of the n LEDs in the light supplement module; R-CD indicates brightness of the red LED in the n LEDs in the light supplement module at the corresponding color temperature; G-CD indicates brightness of the green LED in the n LEDs in the light supplement module at the corresponding color temperature; and B-CD indicates brightness of the blue LED in the n LEDs in the light supplement module. R-PWM is a duty ratio of the red LED at the corresponding color temperature, G-PWM is a duty ratio of the green LED at the corresponding color temperature, and B-PWM is a duty ratio of the blue LED at the corresponding color temperature. The frequency is a flickering frequency of each LED. The duty ratio refers to a ratio of power-on time to total time in one pulse cycle, and the higher the ratio, the higher the brightness of the LED.

The control parameter is the duty ratio and proportional relationship of the LED of each color at the corresponding color temperature. It should be noted that Table <NUM> is only an exemplary relationship between the PWM signal and the color temperature of the LEDs with different colors, and is used to assist description of the aspects. The actual value of the color temperature is related to the LED, and needs to be measured according to actual conditions, thus the data in the table is not a qualification.

In step <NUM>, the n PWM signals in the target group PWM signal is used to control the n LEDs respectively.

Optionally, all of the n PWM signals are voltage signals, or all of them are current signals, or some of them are voltage signals, and some of them are current signals. Since each LED is independently set, it is possible to determine to use the voltage or current signal for control according to actual needs.

Taking the data in Table <NUM> as an example, the table corresponds to three colors of red (R), green (G), and blue (B) LEDs, so Table <NUM> includes three kinds of PWM signals. If the number of colors of the LED is other numbers, for example, there are <NUM> color LEDs, then <NUM> kinds of PWM signals are set.

After the target group PWM is determined, the n LEDs are respectively controlled according to the target group PWM signal, and the light emitting ratio or light intensity ratio of LED of each color is adjusted to obtain the overall color temperature.

The present aspect will be described below in conjunction with <FIG> is a schematic diagram illustrating connection relationships of various parts of a terminal according to an exemplary aspect of the present disclosure. The terminal includes a camera <NUM>, and a processor <NUM> connected to the camera <NUM>, the camera <NUM> is also connected to the color temperature controller <NUM> and the color temperature sensor <NUM>, and the color temperature controller <NUM> is connected to the light supplement module <NUM>. The light supplement module <NUM> is a light supplement module provided in the foregoing aspects.

When the camera <NUM> is in operation, the color temperature sensor <NUM> collects the light in the ambient light to obtain the data of ambient color temperature, the color temperature sensor <NUM> sends the collected data of ambient color temperature to the processor <NUM>, and the processor <NUM> calculates the value of ambient color temperature according to the data of ambient color temperature, and determines the target group PWM signal according to the value of ambient color temperature and the reference value of color temperature of the white balance requirement. Exemplarily, in conjunction with Table <NUM>, when the value of ambient color temperature is <NUM> Kelvin and the reference value of color temperature of the white balance requirement is <NUM> Kelvin, the color temperature controller <NUM> determines the target group PWM signal from seven sets of control parameters by using the negative feedback mechanism, such as a group corresponding to the target group PWM signal of <NUM> Kelvin.

The color temperature controller <NUM> controls the light supplement module <NUM> to jump to the PWM signal corresponding to <NUM> Kelvin from the PWM signal corresponding to <NUM> Kelvin, during the process, the color temperature sensor <NUM> and the processor <NUM> detect the value of ambient color temperature and compare it with the reference value of color temperature of <NUM> Kelvin, and it is found that the value of ambient color temperature is still lower than the reference value of color temperature of <NUM> Kelvin, then, the color temperature controller <NUM> controls the light supplement module <NUM> to jump from the PWM signal corresponding to the <NUM> Kelvin to the PWM signal corresponding to the <NUM> Kelvin. During the process, the color temperature sensor <NUM> and the processor <NUM> detect the value of ambient color temperature and compare it with the reference value of color temperature, and it is just equal to or close to the reference value of color temperature, then the negative feedback adjustment is completed. It should be noted that if the reference value of color temperature does not exactly correspond to a certain set of control parameters, then it is adjusted to use a set of PWM signals that are closest to the reference value of color temperature.

Since the higher the duty ratio, the higher the brightness, to adjust the brightness while keeping the color temperature constant, the duty ratio of LED of each color is simply increased or reduced at the same time, the adjusted ratio does not change, then the color temperature of the light supplement module is unchanged, and only the brightness changes.

In summary, the color temperature adjustment method provided by the aspect adjusts the light emitting state of the light supplement module according to several sets of PWM signals by using the negative feedback mechanism, and finally achieves the purpose of supplementing light with different temperature colors for the camera. Due to the negative feedback mechanism, the capturing effect may be made closer to the reference value of color temperature, and the capturing effect is better.

<FIG> is a block diagram illustrating a light supplement control apparatus <NUM> according to an exemplary aspect of the present disclosure. The light supplement module includes: a circuit substrate; and n Light Emitting Diodes (LED) disposed in an array on the circuit substrate, n being an integer greater than <NUM>, and there being at least two LEDs having different colors; wherein, a light guiding layer is disposed on an upper layer of the n LEDs; and wherein, the LEDs are color LEDs, or the n LEDs constitute a color LED group; the apparatus includes: a collection module <NUM>, configured to obtain an ambient parameter of current capturing ambient; and an adjustment module <NUM>, configured to adjust overall brightness and/or overall color temperature of the n LEDs. The collection module <NUM> is configured to collect data of ambient color temperature; and the calculation module <NUM> is configured to calculate a value of ambient color temperature according to the data of ambient color temperature for adjusting the overall color temperature of the n LEDs according to the value of ambient color temperature.

The analysis module <NUM> is configured to perform color temperature analysis on a captured preview image to obtain a value of ambient color temperature for adjusting the overall color temperature of the n LEDs according to the value of ambient color temperature.

The adjustment module <NUM> is configured to adjust the overall color temperature of the n LEDs using a negative feedback mechanism according to the value of ambient color temperature and a reference value of color temperature.

The determining module <NUM> is configured to determine the reference value of color temperature according to a white balance requirement.

The determining module <NUM> is configured to determine, according to a difference between the value of ambient color temperature and the reference value of color temperature, a target group PWM signal from at least two sets of control parameters according to the negative feedback mechanism; each set of the control parameters includes n PWM signals used for controlling the overall color temperature of the n LEDs to be a target color temperature, the n PWM signals corresponds to the n LEDs; the control module <NUM> is configured to use the n PWM signals in the target group PWM signal to control the n LEDs respectively.

The present disclosure also provides a terminal, in conjunction with <FIG> and <FIG>, <FIG> is a front structural view illustrating a terminal according to an exemplary aspect of the present disclosure, <FIG> is a front structural view illustrating a terminal according to another exemplary aspect of the present disclosure, <FIG> is a rear structural diagram illustrating a terminal according to an exemplary aspect of the present disclosure, the terminal includes a middle frame <NUM>, a front side of the middle frame <NUM> includes a display area <NUM>, and a non-display area is formed between the display area <NUM> and the middle frame <NUM>. The front side of the middle frame <NUM> is a front side of an area surrounded by the middle frame <NUM>.

The display area <NUM> is provided with a display screen module, the display screen module is a module for displaying interface content, and the display screen module may be an Organic Light Emitting Display (OLED) or a Liquid Crystal Display (LCD), or other module types used to display interface content. The front side of the middle frame <NUM> includes a camera <NUM>, the camera <NUM> is disposed in the display area <NUM>, and may also be disposed in the non-display area.

The front side of the middle frame <NUM> includes the light supplement module <NUM> for supplementing the camera <NUM> and a color temperature sensor <NUM> for detecting the value of ambient color temperature. Exemplarily, the light supplement module <NUM> is a strip structure disposed near a portion of the non-display area of the camera <NUM>. The structure of the light supplement module <NUM> includes contents disclosed in the foregoing aspects, and details are not described herein again.

In conjunction with <FIG>, in one aspect, the light supplement module <NUM> is disposed in a terminal corresponding to the non-display area of the terminal near the camera, a plurality of through holes are disposed in the non-display area of the terminal, and the through hole is used to pass the light emitted by the light supplement module <NUM>, thereby achieving the purpose of supplementing the light for the camera.

In conjunction with <FIG>, the camera <NUM> and the light supplement module <NUM> for supplementing the camera <NUM> are disposed on the back of the terminal, the light supplement module <NUM> is disposed near the camera <NUM>, and the shape of the light supplement module <NUM> may be a strip, or may be a circular or an irregular pattern, which is not limited in the present aspect. The structure of the light supplement module <NUM> is the same as that of the foregoing aspect. The color temperature sensor <NUM> for detecting the value of ambient color temperature is further disposed on the back surface of the terminal, and the functional relationship between the color temperature sensor <NUM>, the light supplement module <NUM> and the camera <NUM> is the same as that disclosed in the foregoing aspect.

<FIG> is a block diagram illustrating a terminal <NUM> according to an exemplary aspect of the present disclosure. For example, the terminal <NUM> may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet, a medical device, exercise equipment, a personal digital assistant, and the like.

Referring to <FIG>, the terminal <NUM> may include one or more of the following components: a processing component <NUM>, a memory <NUM>, a power component <NUM>, a multimedia component <NUM>, an audio component <NUM>, an input/output (I/O) interface <NUM>, a sensor component <NUM> and a communication component <NUM>.

The processing component <NUM> typically controls overall operations of the terminal <NUM>, such as the operations associated with display, telephone calls, data communications, camera operation and recording operations. The processing component <NUM> may include one or more processors <NUM> to execute instructions to perform all or part of the steps of the methods described above.

The memory <NUM> is configured to store various types of data to support the operation of the terminal <NUM>. Examples of such data include instructions for any applications or methods operated on the terminal <NUM>, contact data, phonebook data, messages, pictures, video, etc. The memory <NUM> may be implemented using any type of volatile or non-volatile memory devices, or a combination thereof, such as a static random access memory (SRAM), an electrically erasable programmable read-only memory (EEPROM), an erasable programmable read-only memory (EPROM), a programmable read-only memory (PROM), a read-only memory (ROM), a magnetic memory, a flash memory, a magnetic or optical disk.

The power component <NUM> provides power to various components of the terminal <NUM>. The power component <NUM> may include a power management system, one or more power sources, and any other components associated with the generation, management, and distribution of power in the terminal <NUM>.

The multimedia component <NUM> includes a screen that provides providing an output interface between the terminal <NUM> and the user. In some aspects, the screen may include a liquid crystal display (LCD) and a touch panel (TP). In some aspects, the multimedia component <NUM> includes a front camera and/or a rear camera. The front camera and the rear camera may receive an external multimedia datum while the terminal <NUM> is in an operation mode, such as a photographing mode or a video mode. The screen includes a display area and a light supplement area, the display area is provided with a display module, an under-screen camera is provided below the display module, and the under-screen camera shoots through the display module; the light supplement area is disposed side by side or partially overlapped with the display area.

A light supplement lamp is disposed below the screen, and the light emitted from the light supplement lamp is transmitted through the light supplement area to supplement the under-screen camera.

The audio component <NUM> is configured to output and/or input audio signals. For example, the audio component <NUM> includes a microphone ("MIC") configured to receive an external audio signal when the terminal <NUM> is in an operation mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signal may be further stored in the memory <NUM> or transmitted via the communication component <NUM>. In some aspects, the audio component <NUM> further includes a speaker to output audio signals.

The sensor component <NUM> includes one or more sensors to provide status assessments of various aspects of the terminal <NUM>. For instance, the sensor component <NUM> may detect an open/closed status of the terminal <NUM>, relative positioning of components, e.g., the display and the keypad, of the terminal <NUM>, a change in position of the terminal <NUM> or a component of the terminal <NUM>, a presence or absence of user contact with the terminal <NUM>, an orientation or an acceleration/deceleration of the terminal <NUM>, and a change in temperature of the terminal <NUM>. In some aspects, the sensor component <NUM> may also include an accelerometer sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, a temperature sensor, or an ambient light brightness sensor. The ambient light brightness sensor is used for detecting the ambient light intensity, and when the ambient light brightness sensor detects that the intensity of the ambient light is lower than a preset value, the light supplement lamp is controlled to start to supplement the under-screen camera.

The communication component <NUM> is configured to facilitate communication, wired or wirelessly, between the terminal <NUM> and other devices. The terminal <NUM> can access a wireless network based on a communication standard, such as WiFi, <NUM>, or <NUM>, <NUM>, <NUM>, or a combination thereof. In one exemplary aspect, the communication component <NUM> receives a broadcast signal or broadcast associated information from an external broadcast management system via a broadcast channel. In one exemplary aspect, the communication component <NUM> further includes a near field communication (NFC) module to facilitate short-range communications.

In an exemplary aspect, the terminal <NUM> may be implemented with 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 light supplement control methods.

In an exemplary aspect, there is also provided a non-transitory computer-readable storage medium including instructions, such as included in the memory <NUM>, executable by the processor <NUM> in the terminal <NUM>, for performing the above-described light supplement control methods. For example, the non-transitory computer-readable storage medium may be a ROM, a RAM, a CD-ROM, a magnetic tape, a floppy disc, an optical data storage device, and the like.

It should be understood that "a plurality of" as referred to herein means two or more. "and / or", describes an association relationship of associated objects, indicating that there may be three relationships, for example, A and/or B may indicate that A exists alone, A and B coexist, or B exists alone. The character "/" herein generally indicates that the contextual object is of an "or" relationship.

It is noted that the various modules, sub-modules, units, and components in the present disclosure can be implemented using any suitable technology. For example, a module may be implemented using circuitry, such as an integrated circuit (IC). As another example, a module may be implemented as a processing circuit executing software instructions.

Claim 1:
A light supplement module, comprising:
a circuit substrate (<NUM>);
n Light Emitting Diodes (LED) disposed in an array on the circuit substrate (<NUM>), n being an integer greater than <NUM>, and there being at least two LEDs having different colors; and
a light guiding layer (<NUM>) disposed on an upper layer of the n LEDs,
wherein the LEDs are color LEDs, or the n LEDs constitute a color LED group,
characterized in that:
the circuit substrate (<NUM>) is electrically connected to a color temperature control chip (<NUM>), and the color temperature control chip (<NUM>) is electrically connected to a processor (<NUM>),
wherein the processor (<NUM>) is configured to perform color temperature analysis on a shot preview image to obtain a value of ambient color temperature, and
wherein the color temperature control chip (<NUM>) is configured to adjust an overall color temperature of the n LEDs according to the value of ambient color temperature,
wherein the processor (<NUM>) is further configured to divide the shot preview image to form a plurality of areas, and separately analyze image data in each area to obtain the value of ambient color temperature,
wherein the overall color temperature of the n LEDs is adjusted using a negative feedback mechanism according to the value of ambient color temperature and a reference value of color temperature,
wherein the processor (<NUM>) is further configured to:
determine the reference value of color temperature according to a white balance requirement;
determine, according to a difference between the value of ambient color temperature and the reference value of color temperature, a target group PWM signal from at least two sets of control parameters according to the negative feedback mechanism, each set of the control parameters comprising n PWM signals used for controlling the overall color temperature of the n LEDs to be a target color temperature, the n PWM signals corresponding to the n LEDs; and
wherein the color temperature control chip (<NUM>) is further configured to use the n PWM signals in the target group PWM signal to control (<NUM>) the n LEDs respectively,
wherein the n PWM signals comprise a current signal and/or a voltage signal.