Tuning method and circuit for chromaticity of white light, and electronic device

Abstract

Disclosed in the present invention are a tuning method and circuit for the chromaticity of white light, and an electronic device. The method comprises: determining a target chromaticity to which light emitted by a light-emitting device needs to be tuned, wherein the light-emitting device comprises a main light source and an auxiliary light source, the main light source is configured to emit white light, the target chromaticity is tuned on the basis of the white light, and a color temperature difference between light emitted by the auxiliary light source and the light emitted by the main light source is less than a preset threshold; determining a power ratio between the main light source and the auxiliary light source on the basis of the target chromaticity; and adjusting a power of the main light source and a power of the auxiliary light source on the basis of the power ratio, such that the light emitted by the light-emitting device reaches the target chromaticity. According to the technical solution of the present invention, by means of the auxiliary effect of the auxiliary light source, the chromaticity of white light emitted by the main light source can be steplessly tuned on the basis of the power ratio between the main light source and the auxiliary light source, thereby greatly improving the tuning fineness of the chromaticity of the white light; and no additional filter is needed, thereby reducing material consumption for tuning of the chromaticity of the white light.

Description

Method, circuit and electronic device for adjusting white light color

[0001] Cross-reference to related applications

[0002] The present disclosure claims priority to Chinese Patent Application No. 202411066034.0, filed on August 5, 2024, entitled “Method, circuit and electronic device for adjusting white light color”, the entire contents of which are incorporated herein by reference in its entirety. TECHNICAL FIELD

[0003] The present disclosure belongs to the technical field of light processing, and specifically relates to a method, circuit and electronic device for adjusting white light color. BACKGROUND

[0004] Light Emitting Diode (LED) has been widely used in various lighting devices as a light source due to its energy saving, low price, long service life, controllable light source and other advantages. White LED is the most widely used color light source in lighting devices. In order to meet user needs, some white LED devices can currently adjust white light color. The adjustment method is usually to add a filter in front of the white light source, and to adjust the color of the filter to achieve the light emitted by the white light source meeting user needs. However, this adjustment method not only increases the consumption of the filter, but also has limited selection of the filter, and the precision of light color adjustment is low. SUMMARY

[0005] The present disclosure aims to provide a method, circuit and electronic device for adjusting white light color to improve the precision of white light color adjustment.

[0006] Other characteristics and advantages of the present disclosure will become apparent from the following detailed description, or will be learned by practice of the present disclosure.

[0007] According to an aspect of an embodiment of the present disclosure, a method for adjusting white light color is provided, comprising:

[0008] determining a target light color to which light emitted by a light emitting device needs to be adjusted, the light emitting device comprising a main light source and an auxiliary light source, the main light source being configured to emit white light, the target light color being adjusted based on the white light; and a color temperature difference between light emitted by the auxiliary light source and light emitted by the main light source being less than a preset threshold value;

[0009] determining a power ratio between the main light source and the auxiliary light source according to the target light color;

[0010] adjusting the power of the main light source and the power of the auxiliary light source according to the power ratio, so that the light emitted by the light emitting device reaches the target light color.

[0011] According to an aspect of an embodiment of the present disclosure, there is provided a white light color adjustment circuit, comprising:

[0012] a main light source circuit configured to emit white light, connected with a power supply; the main light source circuit comprising a main light source;

[0013] an auxiliary light source circuit connected with the power supply; the auxiliary light source circuit comprising an auxiliary light source;

[0014] a power adjustment circuit connected with the main light source circuit and the auxiliary light source circuit, configured to determine a power ratio between the main light source and the auxiliary light source according to a target light color to which light emitted by a light emitting device needs to be adjusted, and generate control signals of the main light source circuit and the auxiliary light source circuit according to the power ratio, so as to adjust the power of the main light source and the power of the auxiliary light source through the control signals of the main light source circuit and the auxiliary light source circuit, so that the light emitted by the light emitting device reaches the target light color.

[0015] According to an aspect of an embodiment of the present disclosure, there is provided a white light color adjustment device, comprising:

[0016] a target light color determiner configured to determine a target light color to which light emitted by a light emitting device needs to be adjusted, the light emitting device comprising a main light source and an auxiliary light source, the main light source being configured to emit white light, the target light color being adjusted based on the white light, and a color temperature difference between light emitted by the auxiliary light source and light emitted by the main light source being less than a preset threshold value;

[0017] a power ratio determiner configured to determine a power ratio between the main light source and the auxiliary light source according to the target light color;

[0018] a power adjuster configured to adjust the power of the main light source and the power of the auxiliary light source according to the power ratio, so that the light emitted by the light emitting device reaches the target light color.

[0019] In an embodiment of the present disclosure, the power ratio determiner is specifically configured to:

[0020] determine a position coordinate of the target light color in a color space and a position coordinate of the white light emitted by the main light source in the color space;

[0021] determine the power ratio between the main light source and the auxiliary light source according to the position coordinate corresponding to the target light color and the position coordinate corresponding to the main light source.

[0022] In an embodiment of the present disclosure, the power ratio determiner is specifically configured to:

[0023] if the position coordinate corresponding to the target light color is higher than the position coordinate corresponding to the main light source, then increase the power ratio between the main light source and the auxiliary light source;

[0024] if the position coordinate corresponding to the target light color is lower than the position coordinate corresponding to the main light source, then decrease the power ratio between the main light source and the auxiliary light source.

[0025] In one embodiment of the present disclosure, the main light source comprises a first white light source and a second white light source; the power ratio determiner is specifically configured to:

[0026] determine a combined light source composed of the first white light source and the second white light source according to the white light power ratio between the first white light source and the second white light source;

[0027] determine the power ratio between the combined light source and the auxiliary light source according to the target light color;

[0028] Correspondingly, the power adjuster is specifically configured to:

[0029] adjust the power of the main light source and the power of the auxiliary light source according to the power ratio between the combined light source and the auxiliary light source.

[0030] In one embodiment of the present disclosure, the power adjuster is specifically configured to:

[0031] generate a main light source control signal duty cycle and an auxiliary light source control signal duty cycle according to the power ratio between the combined light source and the auxiliary light source;

[0032] adjust the main light source power based on the main light source control signal duty cycle, and adjust the auxiliary light source power based on the auxiliary light source control signal duty cycle.

[0033] In one embodiment of the present disclosure, the main light source comprises a first white light source and a second white light source; the color temperature of the light emitted by the auxiliary light source is between the color temperature of the light emitted by the first white light source and the color temperature of the light emitted by the first white light source.

[0034] In one embodiment of the present disclosure, the auxiliary light source is a pure monochromatic light emitting diode or an excitation light emitting diode; the color of the auxiliary light source is selected from the color range indicated by the isothermal line corresponding to the auxiliary light source.

[0035] In one embodiment of the present disclosure, the target light color determiner is specifically configured to:

[0036] determine the target light color to which the light emitted by the light emitting device needs to be adjusted according to the light emitting device use scene, and the mapping relationship between the preset white light use scene and the target light color; or

[0037] According to the instruction issued by the user to the light emitting device, a target light color to which the light emitted by the light emitting device needs to be adjusted is determined.

[0038] According to an aspect of an embodiment of the present disclosure, there is provided a computer readable medium having stored thereon a computer program which, when executed by a processor, implements the white light color adjustment method in the above technical solutions.

[0039] According to an aspect of an embodiment of the present disclosure, there is provided an electronic device comprising: a processor; and a memory configured to store executable instructions of the processor; wherein the processor executes the executable instructions to cause the electronic device to perform the white light color adjustment method in the above technical solutions.

[0040] According to an aspect of an embodiment of the present disclosure, there is provided a computer program product or computer program comprising computer instructions stored in a computer readable storage medium. A processor of a computer device reads the computer instructions from the computer readable storage medium, and the processor executes the computer instructions to cause the computer device to perform the white light color adjustment method in the above technical solutions.

[0041] In the technical solution provided by the present disclosure, first, a target light color to which the light emitted by the light emitting device needs to be adjusted is determined, the light emitting device comprises a main light source and an auxiliary light source, the main light source is configured to emit white light, and the target light color is adjusted based on the white light; a color temperature difference between the light emitted by the auxiliary light source and the light emitted by the main light source is less than a preset threshold; then, a power ratio between the main light source and the auxiliary light source is determined according to the target light color; finally, the power of the main light source and the power of the auxiliary light source are adjusted according to the power ratio, so that the light emitted by the light emitting device reaches the target light color. Thus, through the auxiliary effect of the auxiliary light source, the white light color emitted by the main light source can be steplessly adjusted based on the power ratio between the main light source and the auxiliary light source, which greatly improves the fineness of white light color adjustment, and does not need to use an additional filter, thereby reducing the material consumption of white light color adjustment.

[0042] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0043] The drawings herein are incorporated into the specification and form a part of the specification, show embodiments consistent with the present disclosure, and together with the specification serve to explain the principles of the present disclosure. Obviously, the drawings in the following description are only some embodiments of the present disclosure, and other drawings can be obtained by those skilled in the art without creative labor based on these drawings.

[0044] FIG. 1A schematically shows an exemplary system architecture block diagram to which the technical solution of the present disclosure is applied.

[0045] FIG. 1B schematically shows an exemplary system architecture block diagram to which the technical solution of the present disclosure is applied.

[0046] FIG. 2 schematically shows a flow chart of a method for adjusting white light color according to an embodiment of the present disclosure.

[0047] FIG. 3 schematically shows a diagram of a color space according to an embodiment of the present disclosure.

[0048] FIG. 4 schematically shows a flow chart of a method for adjusting white light color according to an embodiment of the present disclosure.

[0049] FIG. 5 schematically shows a diagram of a color space according to an embodiment of the present disclosure.

[0050] FIG. 6 schematically shows a diagram of a white light color adjusting circuit according to an embodiment of the present disclosure.

[0051] FIG. 7 schematically shows a structural diagram of a white light color adjusting circuit according to an embodiment of the present disclosure.

[0052] FIG. 8 schematically shows a structural diagram of a white light color adjusting circuit according to an embodiment of the present disclosure.

[0053] FIG. 9 schematically shows a structural block diagram of a white light color adjusting device according to an embodiment of the present disclosure.

[0054] FIG. 10 schematically shows a computer system structural block diagram of an electronic device suitable for implementing an embodiment of the present disclosure. DETAILED DESCRIPTION

[0055] Example implementations are now described with reference to the drawings; however, these implementations are merely examples of implementations and are not intended to limit the scope of what is described herein. Rather, the scope of the descriptions is to be accorded the broadest interpretation so as to encompass all similar technologies and functions. Various aspects, features, and embodiments of the disclosure are described in further detail below.

[0056] Moreover, the described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the disclosure. One skilled in the relevant art will recognize, however, that the implementations can be practiced without one or more of the specific details, or with other methods, components, materials, and so forth. In other instances, well-known structures, devices, and operations have not been shown or described in detail to avoid obscuring aspects of the disclosure.

[0057] The block diagrams illustrated in the drawings are merely functional entities, and do not necessarily have to correspond to physically independent entities. That is, the functional entities can be implemented in the form of software, or in one or more hardware modules or integrated circuits, or in different networks and / or processor devices and / or microcontroller devices.

[0058] The flowcharts illustrated in the drawings are merely exemplary illustrations, and do not necessarily include all contents and operations / steps, nor do they have to be executed in the order described. For example, some operations / steps can be further decomposed, and some operations / steps can be combined or partially combined, so the actual execution order can be changed according to actual conditions.

[0059] FIG. 1A schematically illustrates an exemplary system architecture block diagram to which the technical solutions of the present disclosure are applied.

[0060] As shown in FIG. 1A, the system architecture 100 can include a terminal device 110, a network 120, and a server 130. The terminal device 110 can include a smartphone, a tablet computer, a notebook computer, a smart voice interaction device, a smart home appliance, a vehicle-mounted terminal, and the like. The server 130 can be a standalone physical server, or a server cluster or distributed system composed of multiple physical servers, or a cloud server providing cloud computing services. The network 120 can be a communication medium of various connection types capable of providing a communication link between the terminal device 110 and the server 130, such as a wired communication link or a wireless communication link.

[0061] According to implementation needs, the system architecture in the embodiments of the present disclosure can have any number of terminal devices, networks, and servers. For example, the server 130 can be a server group composed of multiple server devices. In addition, the technical solutions provided by the embodiments of the present disclosure can be configured as the terminal device 110, which is provided with a light emitting device, or as the server 130, or can be jointly implemented by the terminal device 110 and the server 130, and the present disclosure does not make special limitations thereon. Exemplarily, the terminal device 110 is provided with a main light source and an auxiliary light source, the main light source is configured to emit white light, and the color temperature difference between the light emitted by the auxiliary light source and the light emitted by the main light source is less than a preset threshold value. When light color adjustment is needed, the terminal device 110 determines a target light color to which the light emitted by the terminal device 110 needs to be adjusted, and then determines a power ratio between the main light source and the auxiliary light source according to the target light color; and then adjusts the power of the main light source and the power of the auxiliary light source according to the power ratio, so as to emit the target light color.

[0062] FIG. 1B schematically illustrates an exemplary system architecture block diagram to which the technical solutions of the present disclosure are applied.

[0063] As shown in FIG. 1B, the system architecture can include a terminal device 110 and a lamp body 140, and the terminal device 110 is connected with the lamp body 140. The terminal device 110 can include a smart phone, a tablet computer, a notebook computer, a smart voice interactive device, a smart household appliance, a vehicle-mounted terminal, and the like. The connection between the terminal device 110 and the lamp body 140 can be a wired connection or a wireless connection, for example, the terminal device 110 can be connected with the lamp body 140 through Bluetooth, NFC, WiFi, and the like, or the terminal device 110 can be connected with the lamp body 140 through a data line or the like. The lamp body 140 is provided with a light source and a control circuit, and the control circuit can be the white light color adjustment circuit provided in any embodiment of the present disclosure. The user can set a target light color through the terminal device 110, and send the target light color to the control circuit of the lamp body 110, so as to realize the adjustment of the white light color through the control circuit.

[0064] Optionally, the user can also transmit a dimming signal containing the target light color to the lamp body 140 through a wireless DMX controller or a wired DMX controller, so as to adjust the light color.

[0065] The white light color adjustment method provided in the present disclosure will be described in detail in combination with the specific embodiments.

[0066] FIG. 2 schematically shows a flowchart of the white light color adjustment method provided in an embodiment of the present disclosure, which can be implemented by a white light color adjustment device, and the adjustment device can be configured in a light emitting device. The specific implementation process of the method will be described below by taking the light emitting device as the execution subject. As shown in FIG. 2, the white light color adjustment method provided in the present embodiment includes steps 210 to 230, and the details are as follows.

[0067] In step 210, a target light color to which the light emitted by the light emitting device needs to be adjusted is determined. The light emitting device includes a main light source and an auxiliary light source. The main light source is configured to emit white light, and the target light color is adjusted based on the white light. The color temperature difference between the light emitted by the auxiliary light source and the light emitted by the main light source is less than a preset threshold value.

[0068] Specifically, the light emitting device is provided with a main light source and an auxiliary light source. The main light source is configured to emit white light, and the light emitted by the auxiliary light source is configured to adjust the light color of the white light emitted by the main light source, so that the adjusted white light color meets the user's demand. In the present embodiment, the light color to be reached after adjustment is the target light color. In the present embodiment, the adjustment of the white light is to adjust the light color without changing the color temperature of the white light. Therefore, the color temperature of the light emitted by the auxiliary light source must be close to the color temperature of the white light emitted by the main light source, that is, the color temperature difference between the two is less than a preset threshold value. It should be noted that the light color is a parameter configured to represent the color of light in optics, and the calculation unit is K (Kevin).

[0069] In an embodiment of the present disclosure, the target light color to which the light emitted by the light emitting device needs to be adjusted can be set by a user, for example, the user issues an instruction to the light emitting device, indicating that the target light color to which the light emitted by the light emitting device reaches is a certain specific value, or a certain bias color, such as the target light color is white light biased red, white light biased green, etc.

[0070] In an embodiment of the present disclosure, the target light color can be determined according to the white light use scene, for example, in the portrait photography light compensation scene, generally the light color needs to be biased magenta, so the target light color is white light biased magenta; in the green plant camera scene, the target light color is generally set to be biased green; in the simulated sunlight scene, the target light color is white light biased green. In the case of determining the target light color based on the white light use scene, the mapping relationship between the white light use scene and the target light color can be set in advance, and then in the actual use process, the target light color corresponding to the current scene can be determined according to the mapping relationship and the specific use scene.

[0071] Step 220, determining the power ratio between the main light source and the auxiliary light source according to the target light color.

[0072] Specifically, in the light emitting device, the power of the light source (including the main light source and the auxiliary light source) embodies the light color of the light emitted by the light source, so when the power ratio between the main light source and the auxiliary light source changes, the white light color presented by the device as a whole will change, thereby the power ratio between the main light source and the auxiliary light source and the white light color presented by the device as a whole have a certain correlation, based on the correlation and the current required target light color, the power ratio between the main light source and the auxiliary light source can be determined.

[0073] In an embodiment of the present disclosure, the process of calculating the power ratio includes: determining the position coordinates of the target light color in the color space and the position coordinates of the white light emitted by the main light source in the color space; determining the power ratio between the main light source and the auxiliary light source according to the position coordinates corresponding to the target light color and the position coordinates corresponding to the main light source.

[0074] Specifically, a color space is equivalent to a mathematical model for describing colors by numerical values. Commonly used color spaces include CIE 1931 color space, CIE 1960 color space, etc. Each color space has a corresponding coordinate system. For example, the CIE 1931 color space can use the XYZ coordinate system or the RGB coordinate system. The XYZ coordinate system is actually obtained by converting the RGB coordinate system. X represents an ideal red primary color, Y represents an ideal green primary color, and Z represents an ideal blue primary color. The term "ideal" is used to distinguish from true colors in a physical sense. Generally, the CIE 1931 XYZ color space is projected into the CIE 1931 xyY color space, i.e., Z is not considered, and the color is represented by two other coefficients X and Y. Because Z can be derived by X+Y+Z=1, a two-dimensional horseshoe-shaped color space can be obtained, as shown in FIG. 3.

[0075] Any color can be considered as a combination of red, green, and blue colors. Therefore, a point in a color space can represent a color. The light emitting device can calculate the values of the red, green, and blue ideal primary color components of the target light color, i.e., determine the X, Y, and Z values in the CIE 1931 XYZ color space, and thus determine the position coordinates of the target light color in the color space. Generally, the position coordinates of white light in the color space are usually determined, such as point A in FIG. 3, which represents white light, and the position coordinates can be represented as (0.3302, 0.3391). The arc line passing through point A in FIG. 3 represents the blackbody locus. Each vertical line segment intersecting the blackbody locus represents an isothermic line. In this embodiment, the light emitted by the auxiliary light source is located on the isothermic line passing through point A. Generally, the position of white light is usually located on the blackbody locus. Considering errors, the position of white light can also be located near the blackbody locus, such as above or below the blackbody locus.

[0076] After determining the position coordinates of the target light color and the white light, the power ratio between the main light source and the auxiliary light source is determined based on the relationship between the position coordinates of the target light color and the position coordinates of the white light. If the position coordinates of the target light color are higher than the position coordinates of the main light source, as shown in FIG. 3, i.e., the position coordinates of the target light color are located above point A in the vertical direction, and the colors in the upper region of the CIE 1931 XYZ color space are usually red, therefore, this case indicates that the target light color is biased towards red, and the power ratio between the main light source and the auxiliary light source is increased. If the position coordinates of the target light color are lower than the position coordinates of the main light source, as shown in FIG. 3, i.e., the position coordinates of the target light color are located below point A in the vertical direction, and the colors in the upper region of the CIE 1931 XYZ color space are usually green, therefore, this case indicates that the target light color is biased towards green, and the power ratio between the main light source and the auxiliary light source is decreased.

[0077] Step 230, adjusting the power of the main light source and the power of the auxiliary light source according to the power ratio, so that the light emitted by the light emitting device reaches the target light color.

[0078] Specifically, in the light emitting device, the total power of the main light source and the auxiliary light source is determined, and adjusting the power of the main light source and the power of the auxiliary light source according to the power ratio is equivalent to adjusting the distribution of the total power between the main light source and the auxiliary light source according to the power ratio. For example, the total power is 100W, and the power ratio between the main light source and the auxiliary light source is 4:1, then the power of the main light source is adjusted to 80W, and the power of the auxiliary light source is adjusted to 20W. The light emitted by the light emitting device finally reaches the target light color, which is the fusion of the white light color of the main light source and the light color of the auxiliary light source.

[0079] For example, as shown in the color space of FIG. 3, because the color temperature difference between the light emitted by the auxiliary light source and the light emitted by the main light source is less than the preset threshold value, the light color of the auxiliary light source is equivalent to the light color selected on the isotherm of the main light source, such as the isotherm passing point A in FIG. 3, the color temperature is 5600K, the light color above point A on the isotherm can be selected as the auxiliary light source B, at this time point B is (0.3293, 0.4566), the light color below point A on the isotherm can also be selected as the auxiliary light source B, at this time point B is (0.3308, 0.2575), and the final target light color is between points A and B. The greater the power ratio between the main light source and the auxiliary light source, the more the target light color is biased towards magenta, at this time if the auxiliary light source B is above the white light A, the target light color is biased towards B, at this time if the auxiliary light source B is below the white light A, the target light color is biased towards A; the smaller the power ratio between the main light source and the auxiliary light source, the more the target light color is biased towards green, at this time if the auxiliary light source B is above the white light A, the target light color is biased towards A, at this time if the auxiliary light source B is below the white light A, the target light color is biased towards B. The bias towards magenta or green here refers to slightly changing the light color on the basis of white light, not that the final light is completely magenta or green. Thus, the technical scheme of the present disclosure changes the magenta of white light by adjusting the power ratio between the main light source and the auxiliary light source, and the power ratio can usually be adjusted steplessly, thereby making the white light magenta (i.e. the white light color) stepless, thereby improving the fineness of the white light color adjustment.

[0080] In one embodiment of the present disclosure, when the light source (main light source or auxiliary light source) is powered on, the light source emits light, and when the equivalent voltage across the light source changes, the power of the light source changes, and the equivalent voltage is adjusted according to a control signal, which is generally a PWM (Pulse Width Modulation) signal. By changing the duty cycle of the PWM signal, the equivalent voltage can be changed to adjust the power of the light source. Therefore, the main light source control signal duty cycle and the auxiliary light source control signal duty cycle can be generated according to the power ratio, and then the main light source power is adjusted based on the main light source control signal duty cycle, and the auxiliary light source power is adjusted based on the auxiliary light source control signal duty cycle.

[0081] In the technical solution provided in the embodiments of the present disclosure, first, the target light color to which the light emitted by the light emitting device needs to be adjusted is determined, the light emitting device includes a main light source and an auxiliary light source, the main light source is configured to emit white light, and the target light color is adjusted based on the white light; the color temperature difference between the light emitted by the auxiliary light source and the light emitted by the main light source is less than a preset threshold; then the power ratio between the main light source and the auxiliary light source is determined according to the target light color; finally, the power of the main light source and the power of the auxiliary light source are adjusted according to the power ratio, so that the light emitted by the light emitting device reaches the target light color. Thus, through the auxiliary effect of the auxiliary light source, the color of the white light emitted by the main light source can be steplessly adjusted based on the power ratio between the main light source and the auxiliary light source, greatly improving the fineness of the white light color adjustment, and without using additional filter sheets, thereby reducing the material consumption of the white light color adjustment.

[0082] FIG. 4 schematically shows a flowchart of a white light color adjustment method according to an embodiment of the present disclosure, which is a further optimization of the above-mentioned embodiment. As shown in FIG. 4, the white light color adjustment method provided in the present embodiment includes steps 410 to 440, which are as follows:

[0083] Step 410, determining a target light color to which the light emitted by the light emitting device needs to be adjusted, the light emitting device including a main light source and an auxiliary light source, the main light source including a first white light source and a second white light source; the color temperature difference between the light emitted by the auxiliary light source and the light emitted by the main light source being less than a preset threshold.

[0084] The main light source in this embodiment includes two light sources emitting white light, which are referred to as the first white light source and the second white light source. Generally, one of them is cold white light, and the other is warm white light. The color temperature of the auxiliary light source can be between the color temperature of the first white light source and the color temperature of the second white light source. For example, in the color space shown in FIG. 5, point A (0.2983, 0.3178) is the first white light source with a color temperature of 7500K, and point C (0.4775, 0.4283) is the second white light source with a color temperature of 2600K. The auxiliary light source can be on any isothermal line between points A and C, as shown in FIG. 5. The auxiliary light source B is on the isothermal line 5600K. The auxiliary light source B can be above the blackbody locus, such as point (0.3293, 0.4566), or below the blackbody locus, such as point (0.3308, 0.2575).

[0085] In one embodiment of the present disclosure, the auxiliary light source can be a pure monochromatic light-emitting diode or an excitation light-emitting diode. A pure monochromatic LED emits light directly through a semiconductor material, and each LED emits only one color of light, usually red, green, blue, or other single-color light. Pure monochromatic LEDs usually use direct bandgap semiconductor materials such as aluminum gallium indium phosphide (AlInGaP) or gallium nitride (GaN), and have a narrow spectrum. Excitation LEDs, especially white LEDs, usually use a blue LED as an excitation source, and then convert the blue light into white light or other colored light through phosphor or other materials. This conversion process involves reabsorption and reemission of light, and can emit multiple colors of light, especially white LEDs, which can adjust the color temperature and color performance of white light by using different types of phosphor, and have a wide spectrum.

[0086] Step 420: obtaining a combined light source composed of the first white light source and the second white light source according to the white light power ratio between the first white light source and the second white light source.

[0087] When adjusting the light color of the white light emitted by multiple white light sources, the multiple white light sources are first combined into a combined light source, and the combination process can be achieved by adjusting the power ratio between the white light sources. Therefore, for the first white light source and the second white light source, the combined light source of the two can be obtained by adjusting the white light power ratio between the first white light source and the second white light source.

[0088] In one embodiment of the present disclosure, after determining the combined light source, the color temperature of the auxiliary light source can be set to be the same as the color temperature of the combined light source, so that the color temperature of the target light color obtained by the final dimming still remains near the color temperature of the combined light source, thereby achieving the effect of "dimming without temperature adjustment".

[0089] Step 430: determining the power ratio between the combined light source and the auxiliary light source according to the target light color.

[0090] Specifically, the power ratio adjustment between the combined light source and the auxiliary light source is the same as the ratio adjustment between the main light source and the auxiliary light source in the foregoing embodiment, which will not be described here again.

[0091] Step 440, adjusting the power of the main light source and the power of the auxiliary light source according to the power ratio between the combined light source and the auxiliary light source, so that the light emitted by the light emitting device reaches the target light color.

[0092] Specifically, the power adjustment process here is the same as the power adjustment in the foregoing embodiment, which will not be described here again.

[0093] In the technical solution provided in the embodiments of the present disclosure, the combined light source of the first white light source and the second white light source is determined first, and then the power of the main light source and the power of the auxiliary light source are adjusted according to the power ratio between the combined light source and the auxiliary light source, which realizes the greenness adjustment of multiple white light sources without affecting the color temperature, and improves the fineness of the white light greenness adjustment.

[0094] FIG. 6 schematically shows a schematic diagram of a white light color adjustment circuit provided in an embodiment of the present disclosure, which can implement the white light color adjustment method provided in any embodiment of the present disclosure.

[0095] As shown in FIG. 6, the adjustment circuit includes a main light source circuit 610, an auxiliary light source circuit 620, and a power adjustment circuit 630. The main light source circuit 610 and the auxiliary light source circuit 620 are respectively connected with a power supply, and the power adjustment circuit 630 is connected with the main light source circuit 610 and the auxiliary light source circuit 620 simultaneously. The main light source circuit 610 includes a main light source configured to emit white light. The auxiliary light source circuit 620 includes an auxiliary light source configured to emit auxiliary light. The power adjustment circuit 630 is configured to determine the power ratio between the main light source and the auxiliary light source according to a target light color to which the light emitted by the light emitting device needs to be adjusted, and to generate control signals of the main light source circuit 610 and the auxiliary light source circuit 620 according to the power ratio, so as to adjust the power of the main light source and the power of the auxiliary light source through the control signals of the main light source circuit 610 and the auxiliary light source circuit 620, so that the light emitted by the light emitting device reaches the target light color.

[0096] In an embodiment of the present disclosure, when the main light source circuit 610 includes only one main light source, the white light color adjustment circuit is as shown in FIG. 7, and the specific structures of the main light source circuit 610 and the auxiliary light source circuit 620 are shown in FIG. 7, and the power adjustment circuit 630 is not shown.

[0097] As shown in FIG. 7, the main light source circuit 610 comprises a main light emitting diode LED1, a main pulse control circuit PWM IC1, a first main switch Q11, a first inductor L1, a second main switch Q12, a main resistor R1 and a main grounding diode D1. The main light emitting diode LED1 is a main light source configured to emit white light. The main pulse control circuit PWM IC1 outputs pulse control signals of the first main switch Q11 and the second main switch Q12. The first end of the first main switch Q11 is connected to a power supply, the second end of the first main switch Q11 is connected to the first inductor L1, and the control end of the first main switch Q11 is connected to the main pulse control circuit PWM IC1. The two ends of the first inductor L1 are respectively connected to the first main switch Q11 and the second main switch Q12. The first end of the second main switch Q12 is connected to the positive pole of the first inductor L1 and the positive pole of the main light emitting diode LED1, the second end of the second main switch Q12 is connected to the negative pole of the main light emitting diode LED1, and the control end of the second main switch Q12 is connected to the main pulse control circuit PWM IC1. One end of the main resistor R1 is respectively connected to the main pulse control circuit PWM IC1 and the negative pole of the main light emitting diode LED1, and the other end is grounded. The positive pole of the main grounding diode D1 is grounded, and the negative pole is connected to the second end of the first main switch Q11.

[0098] As shown in FIG. 7, the main light source circuit 610 comprises a main light emitting diode LED1, a main pulse control circuit PWM IC1, a first main switch Q11, a first inductor L1, a second main switch Q12, a main resistor R1 and a main grounding diode D1. The main light emitting diode LED1 is a main light source configured to emit white light. The main pulse control circuit PWM IC1 outputs pulse control signals of the first main switch Q11 and the second main switch Q12. The first end of the first main switch Q11 is connected to a power supply, the second end of the first main switch Q11 is connected to the first inductor L1, and the control end of the first main switch Q11 is connected to the main pulse control circuit PWM IC1. The two ends of the first inductor L1 are respectively connected to the first main switch Q11 and the second main switch Q12. The first end of the second main switch Q12 is connected to the positive pole of the first inductor L1 and the positive pole of the main light emitting diode LED1, the second end of the second main switch Q12 is connected to the negative pole of the main light emitting diode LED1, and the control end of the second main switch Q12 is connected to the main pulse control circuit PWM IC1. One end of the main resistor R1 is respectively connected to the main pulse control circuit PWM IC1 and the negative pole of the main light emitting diode LED1, and the other end is grounded. The positive pole of the main grounding diode D1 is grounded, and the negative pole is connected to the second end of the first main switch Q11.

[0099] In this embodiment, the switch tubes are MOS tubes, the first end of the switch tube is the drain of the MOS tube, the second end is the source of the MOS tube, and the control end is the gate of the MOS tube. In actual application, the switch tube can be other types of devices, such as a triode, an IGBT, etc.

[0100] Since the structures of the main light source circuit 610 and the auxiliary light source circuit 620 are relatively similar, the working principle of the circuit is described below by taking the main light source circuit 610 as an example.

[0101] In the main light source circuit 610, the first main switch tube Q11, the first inductor L1, and the main ground diode D1 constitute a voltage regulation circuit. By changing the duty cycle of the control signal PWM11 received by the control end of the first main switch tube Q11, the equivalent voltage input to the main light-emitting diode LED1 can be changed, and the equivalent power provided to the main light-emitting diode LED1 is changed. The second main switch tube Q12 is a component for controlling the opening and closing of the main light-emitting diode LED1. By changing the duty cycle of the control signal PWM12 received by the control end of the second main switch tube Q12, the actual on-off time of the main light-emitting diode LED1 can be changed, and the equivalent current flowing through the main light-emitting diode LED1 is changed, and the power of the main light-emitting diode LED1 is changed.

[0102] The power is different, and the luminous intensity of the main light-emitting diode LED1 is different. The second main switch tube Q12 changes the "brightness" of the main light-emitting diode LED1 by controlling the conduction and turn-off of the main light-emitting diode LED1 (in the case of a high switching frequency, the effect observed by the human eye is that the light is continuously bright, and the brightness changes with the change of the duty cycle). During the time when the main light-emitting diode LED1 is actually turned on (for example, during the high level of PWM12), the voltage and current of the main light-emitting diode LED1 can remain unchanged (in the case of a fixed duty cycle of PWM11 signal), and the color temperature of the light is slightly affected.

[0103] In the adjustment method provided in the embodiments of the present disclosure, after the power ratio between the main light-emitting diode LED1 and the auxiliary light-emitting diode LED2 is determined according to the target light color, the control signal PWM11 corresponding to the first main switch tube Q11 of the main light-emitting diode LED1 and the control signal PWM21 corresponding to the first auxiliary switch tube Q21 of the auxiliary light-emitting diode LED2 can be generated based on the power ratio, and the on-off of the first main switch tube Q11 and the first auxiliary switch tube Q21 is controlled by the control signal PWM11 and the control signal PWM21, respectively. The equivalent voltage of the main light-emitting diode LED1 and the equivalent voltage of the auxiliary light-emitting diode LED2 are changed, and thus the power of the main light-emitting diode LED1 and the power of the auxiliary light-emitting diode LED2 are changed, so that the final light-emitting effect reaches the target light color, that is, the light-emitting color of the main light-emitting diode LED1 is reddish or greenish.

[0104] The following describes the adjustment process of the light emitting diode by taking the control signal PWM11 as an example. During the high level of the control signal PWM11, the first main switch Q11 is turned on (here, since the NMOS switch is used in FIG. 7, the high level is turned on, and when other types of switches are used, the high level or the low level can be turned on), so that the power signal reaches the main light emitting diode LED1 through the first inductor L1 to form a conduction loop, and the main light emitting diode LED1 is driven to emit light. Due to the existence of the first inductor L1, there is a ramping process during power-up, which reduces the overvoltage caused by the instability of the power supply part, and at the same time, the first inductor L1 stores energy during this period. During the low level of the control signal PWM1, the energy accumulated by the first inductor L1 is released to the main light emitting diode LED1, so that the main light emitting diode LED1 is continuously driven (voltage is supplied). At the same time, the control signal PWM12 determines the duty cycle according to the given brightness to control the on-off of the main light emitting diode LED1, so as to realize the brightness adjustment of the light.

[0105] In one embodiment of the present disclosure, when the main light source circuit 610 only includes two main light sources, the adjustment circuit of the white light color is as shown in FIG. 8, which shows the specific structure of the main light source circuit 610 and the auxiliary light source circuit 620, and the power adjustment circuit 630 is not shown, wherein the structure of the auxiliary light source circuit 620 is the same as that of the auxiliary light source circuit 620 in the embodiment shown in FIG. 7, and will not be described here.

[0106] As shown in FIG. 8, the main light source circuit 610 includes a first light emitting unit 611 and a second light emitting unit 612. The structure of the first light emitting unit 611 is the same as that of the main light source circuit 610 in the embodiment shown in FIG. 7, and will not be described here. The second light emitting unit 612 includes a main light emitting diode LED3, a main pulse control circuit PWM IC3, a first main switch Q31, a first inductor L3, a second main switch Q32, a main resistor R3, and a main grounding diode D3. The connection relationship of each circuit element in the second light emitting unit 612 is the same as that of each circuit element in the main light source circuit 610 in the embodiment shown in FIG. 7, and will not be described here.

[0107] The working principle of the circuit shown in FIG. 8 is similar to that of the circuit shown in FIG. 7, and the difference is that in the circuit shown in FIG. 8, three groups of control signals are needed to be generated to control the first main switch Q11, the first auxiliary switch Q21, and the first main switch Q31 respectively. Other processes can be referred to the description in the foregoing embodiments, and will not be described here.

[0108] The white light color adjusting circuit provided by the technical scheme of the present disclosure can realize stepless adjustment of the white light color through the power ratio between the primary light source and the auxiliary light source, and can realize high-precision light color adjustment whether it is single-color-temperature white light color adjustment (as shown in the circuit of FIG. 7) or double-color-temperature white light color adjustment (as shown in the circuit of FIG. 8).

[0109] It should be noted that although the various steps of the method in the present disclosure are described in a specific order in the accompanying drawings, this does not require or imply that the steps must be performed in this specific order, or that all the steps shown must be performed to achieve the desired result. In addition or alternatively, certain steps can be omitted, multiple steps can be combined into one step, and / or one step can be divided into multiple steps, etc.

[0110] The following describes the device embodiment of the present disclosure, which can be configured to perform the white light color adjustment method in the above-mentioned embodiments of the present disclosure. FIG. 9 schematically shows a structural block diagram of a white light color adjustment device provided by an embodiment of the present disclosure. As shown in FIG. 9, the white light color adjustment device provided by an embodiment of the present disclosure comprises:

[0111] A target light color determiner 910 is configured to determine a target light color to which light emitted by a light emitting device needs to be adjusted, the light emitting device comprising a primary light source and an auxiliary light source, the primary light source being configured to emit white light, the target light color being adjusted based on the white light; and a color temperature difference between light emitted by the auxiliary light source and light emitted by the primary light source being less than a preset threshold value.

[0112] A power ratio determiner 920 is configured to determine a power ratio between the primary light source and the auxiliary light source according to the target light color.

[0113] A power adjuster 930 is configured to adjust the power of the primary light source and the power of the auxiliary light source according to the power ratio, so that the light emitted by the light emitting device reaches the target light color.

[0114] In an embodiment of the present disclosure, the power ratio determiner 920 is specifically configured to:

[0115] determine the position coordinates of the target light color in a color space and the position coordinates of the white light emitted by the primary light source in the color space;

[0116] determine the power ratio between the primary light source and the auxiliary light source according to the position coordinates corresponding to the target light color and the position coordinates corresponding to the primary light source.

[0117] In an embodiment of the present disclosure, the power ratio determiner 920 is specifically configured to:

[0118] if the position coordinate corresponding to the target light color is higher than the position coordinate corresponding to the main light source, then increase the power ratio between the main light source and the auxiliary light source;

[0119] if the position coordinate corresponding to the target light color is lower than the position coordinate corresponding to the main light source, then decrease the power ratio between the main light source and the auxiliary light source.

[0120] In an embodiment of the present disclosure, the main light source comprises a first white light source and a second white light source; the power ratio determiner 920 is specifically configured to:

[0121] determine a combined light source composed of the first white light source and the second white light source according to the white light power ratio between the first white light source and the second white light source;

[0122] determine a power ratio between the combined light source and the auxiliary light source according to the target light color;

[0123] Correspondingly, the power adjuster 930 is specifically configured to:

[0124] adjust the power of the main light source and the power of the auxiliary light source according to the power ratio between the combined light source and the auxiliary light source.

[0125] In an embodiment of the present disclosure, the power adjuster 930 is specifically configured to:

[0126] generate a main light source control signal duty cycle and an auxiliary light source control signal duty cycle according to the power ratio between the combined light source and the auxiliary light source;

[0127] adjust the main light source power based on the main light source control signal duty cycle, and adjust the auxiliary light source power based on the auxiliary light source control signal duty cycle.

[0128] In an embodiment of the present disclosure, the main light source comprises a first white light source and a second white light source; the color temperature of the light emitted by the auxiliary light source is between the color temperature of the light emitted by the first white light source and the color temperature of the light emitted by the first white light source.

[0129] In an embodiment of the present disclosure, the auxiliary light source is a pure monochromatic light emitting diode or an excitation light emitting diode; the color of the auxiliary light source is selected from the color range indicated by the isothermal line corresponding to the auxiliary light source.

[0130] In an embodiment of the present disclosure, the target light color determiner 910 is specifically configured to:

[0131] determine the target light color to which the light emitted by the light emitting device needs to be adjusted according to the light emitting device use scene, and the mapping relationship between the preset white light use scene and the target light color; or

[0132] According to the instruction issued by the user to the light emitting device, the target light color to which the light emitted by the light emitting device needs to be adjusted is determined.

[0133] The specific details of the white light color adjusting device provided in the embodiments of the present disclosure have been described in detail in the corresponding method embodiments, which will not be described here.

[0134] FIG. 10 schematically shows a computer system structure block diagram of an electronic device configured to implement an embodiment of the present disclosure.

[0135] It should be noted that the computer system 1000 of the electronic device shown in FIG. 10 is only an example, and should not bring any limitation to the functions and use range of the embodiments of the present disclosure.

[0136] As shown in FIG. 10, the computer system 1000 includes a central processing unit 1001 (CPU), which can perform various appropriate actions and processes according to programs stored in a read-only memory 1002 (ROM) or loaded from a storage portion 1008 into a random access memory 1003 (RAM). In the random access memory 1003, various programs and data required for system operation are also stored. The central processing unit 1001, the read-only memory 1002, and the random access memory 1003 are connected to each other through a bus 1004. An input / output interface 1005 (I / O interface) is also connected to the bus 1004.

[0137] The following components are connected to the input / output interface 1005: an input portion 1006 including a keyboard, a mouse, and the like; an output portion 1007 including a cathode ray tube (CRT), a liquid crystal display (LCD), and the like, and a speaker, and the like; a storage portion 1008 including a hard disk, and the like; and a communication portion 1009 including a network interface card such as a local area network card, a modem, and the like. The communication portion 1009 performs communication processing via a network such as the Internet. A drive 1010 is also connected to the input / output interface 1005 as necessary. A removable medium 1011 such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, and the like is mounted on the drive 1010 as necessary, so that a computer program read therefrom is installed in the storage portion 1008 as necessary.

[0138] In particular, according to embodiments of the present disclosure, the processes described in the various method flowcharts can be implemented as a computer software program. For example, embodiments of the present disclosure include a computer program product comprising a computer program carried on a computer readable medium, the computer program comprising program code configured to perform the methods illustrated in the flowcharts. In such embodiments, the computer program can be downloaded and installed from a network by the communication section 1009, and / or installed from the detachable medium 1011. When the computer program is executed by the central processing unit 1001, various functions defined in the system of the present disclosure are performed.

[0139] It should be noted that the computer readable medium shown in the embodiments of the present disclosure can be a computer readable signal medium or a computer readable storage medium or any combination of the two. The computer readable storage medium may, for example, but is not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or apparatus, or any combination of the above. More specific examples of the computer readable storage medium can include, but are not limited to, an electrical connection having one or more wires, a portable computer diskette, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM), a flash memory, an optical fiber, a portable compact disk read-only memory (Compact Disc Read-Only Memory, CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In the present disclosure, the computer readable storage medium can be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, device or apparatus. In the present disclosure, the computer readable signal medium can include a data signal carried in a baseband or as a part of a carrier wave, which carries computer readable program code. Such a propagated data signal can take many forms, including but not limited to an electromagnetic signal, an optical signal or any suitable combination of the above. The computer readable signal medium can also be any computer readable medium other than the computer readable storage medium, which can send, propagate or transmit a program configured for use by or in conjunction with an instruction execution system, device or apparatus. The program code contained on the computer readable medium can be transmitted by any suitable medium, including but not limited to wireless, wired, or the like, or any suitable combination of the above.

[0140] The computer program product of the present disclosure can be a computer program including a plurality of program instructions that control at least one apparatus of an electronic device to implement a method according to the present disclosure. The program instructions can include: a routine for receiving a first message from a first apparatus; a routine for determining whether the first message is a message for a second apparatus; a routine for transmitting a second message to the second apparatus, the second message including information about the first message; and a routine for receiving a third message from the second apparatus, the third message including information about a result of processing the first message.

[0141] It should be noted that although a number of devices, or units, are described in the above description as being configured to perform a particular function, such division into devices and units is for the purposes of ease of description. In practice, functions of one or more devices described in the above description can be performed by a single device and vice versa. That is, the above description is for illustrative purposes only and should not be construed in a limiting sense.

[0142] From the above description of embodiments, those skilled in the art will readily perceive that the example embodiments described herein can be practiced by using software composed of a plurality of instructions. Thus, the technical solutions according to the embodiments of the present disclosure can be embodied in the form of a software product. The software product can be stored in a non-volatile storage medium, such as a CD-ROM, a USB flash drive, a mobile hard disk, or a network, and includes a plurality of instructions for causing a computing device (such as a personal computer, a server, a terminal, or a network device) to execute the methods according to the embodiments of the present disclosure.

[0143] Other embodiments of the present disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the features of the present disclosure disclosed herein. It is intended that the present disclosure cover any and all variations of the present disclosure that come within the scope of the claims and a concept underlying the present disclosure. It is intended that the present disclosure include all modifications and alterations from this disclosure.

[0144] It should be understood that the present disclosure is not limited to the precise structures described and illustrated in the above description and accompanying drawings, and that various modifications and changes can be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A method for adjusting the color of white light, comprising: The target light color to be adjusted for the light emitted by the light-emitting device is determined. The light-emitting device includes a main light source and an auxiliary light source. The main light source is configured to emit white light, and the target light color is adjusted based on the white light. The color temperature difference between the light emitted by the auxiliary light source and the light emitted by the main light source is less than a preset threshold. The power ratio between the main light source and the auxiliary light source is determined based on the target light color; The power of the main light source and the power of the auxiliary light source are adjusted according to the power ratio so that the light emitted by the light-emitting device achieves the target light color.

2. The method for adjusting the color of white light according to claim 1, wherein, Determining the power ratio between the main light source and the auxiliary light source based on the target light color includes: Determine the position coordinates of the target light color in the color space and the position coordinates of the white light emitted by the main light source in the color space; The power ratio between the main light source and the auxiliary light source is determined based on the position coordinates corresponding to the target light color and the position coordinates corresponding to the main light source.

3. The method for adjusting the color of white light according to claim 2, wherein, Determining the power ratio between the main light source and the auxiliary light source based on the position coordinates corresponding to the target light color and the position coordinates corresponding to the main light source includes: If the position coordinates corresponding to the target light color are higher than the position coordinates corresponding to the main light source, then the power ratio between the main light source and the auxiliary light source will be increased. If the position coordinates corresponding to the target light color are lower than the position coordinates corresponding to the main light source, then the power ratio between the main light source and the auxiliary light source will be reduced.

4. The method for adjusting the color of white light according to claim 1, wherein, The main light source includes a first white light source and a second white light source; Determining the power ratio between the main light source and the auxiliary light source based on the target light color includes: Based on the white light power ratio between the first white light source and the second white light source, a combined light source consisting of the first white light source and the second white light source is obtained; The power ratio between the combined light source and the auxiliary light source is determined based on the target light color; Correspondingly, adjusting the power of the main light source and the auxiliary light source according to the power ratio includes: The power of the main light source and the power of the auxiliary light source are adjusted according to the power ratio between the combined light source and the auxiliary light source.

5. The method for adjusting the color of white light according to claim 4, wherein, Adjusting the power of the main light source and the power of the auxiliary light source according to the power ratio between the combined light source and the auxiliary light source includes: The duty cycle of the main light source control signal and the duty cycle of the auxiliary light source control signal are generated based on the power ratio between the combined light source and the auxiliary light source. The power of the main light source is adjusted based on the duty cycle of the main light source control signal, and the power of the auxiliary light source is adjusted based on the duty cycle of the auxiliary light source control signal.

6. The method for adjusting the color of white light according to claim 1, wherein, The main light source includes a first white light source and a second white light source; the color temperature of the light emitted by the auxiliary light source is between the color temperature of the light emitted by the first white light source and the color temperature of the light emitted by the first white light source.

7. The method for adjusting the color of white light according to claim 1, wherein, The auxiliary light source is a pure monochromatic light-emitting diode or an excitation light-emitting diode; the color of the auxiliary light source is selected from the color range indicated by the isotherm corresponding to the auxiliary light source.

8. The method for adjusting the color of white light according to claim 1, wherein, Determine the target color of light emitted by the light-emitting device that needs to be adjusted, including: Based on the usage scenario of the light-emitting device and the pre-set mapping relationship between the white light usage scenario and the target light color, determine the target light color that the light emitted by the light-emitting device needs to be adjusted to; or Based on the instructions given by the user to the light-emitting device, determine the target color of the light emitted by the light-emitting device that needs to be adjusted.

9. A white light color adjustment circuit, comprising: The main light source circuit is configured to emit white light and is connected to a power supply; the main light source circuit includes a main light source. An auxiliary light source circuit is connected to the power supply. The auxiliary light source circuit includes an auxiliary light source; A power adjustment circuit, connected to the main light source circuit and the auxiliary light source circuit, is configured to determine the power ratio between the main light source and the auxiliary light source based on the target light color that the light emitted by the light-emitting device needs to be adjusted to; and generate control signals for the main light source circuit and the auxiliary light source circuit based on the power ratio, so as to adjust the power of the main light source and the auxiliary light source through the control signals of the main light source circuit and the auxiliary light source circuit, so that the light emitted by the light-emitting device reaches the target light color.

10. The white light color adjustment circuit according to claim 9, wherein, The main light source circuit includes: The main light-emitting diode is configured to emit white light; the main light-emitting diode is the main light source. The main pulse controller is configured to output pulse control signals. A first main switch transistor, the first end of which is connected to the power supply, the second end of which is connected to the first inductor, and the control end of which is connected to the main pulse controller. The first inductor has its two ends connected to the first main switch transistor and the second main switch transistor, respectively. The second main switch has its first terminal connected to the positive terminal of the first inductor and the main light-emitting diode, respectively, and its second terminal connected to the negative terminal of the main light-emitting diode. The control terminal of the second main switch is connected to the main pulse controller. The main resistor has one end connected to the main pulse controller and the negative terminal of the main light-emitting diode, and the other end grounded. The main grounding diode has its positive terminal grounded and its negative terminal connected to the second terminal of the first main switch.

11. The white light color adjustment circuit according to claim 9, wherein, The auxiliary light source circuit includes: An auxiliary light-emitting diode, wherein the auxiliary light-emitting diode is the auxiliary light source; An auxiliary pulse controller is configured to output pulse control signals; A first auxiliary switch transistor, the first end of which is connected to the power supply, the second end of which is connected to the second inductor, and the control end of which is connected to the auxiliary pulse controller; The second inductor is connected at both ends to the first auxiliary switch and the second auxiliary switch, respectively. The second auxiliary switch has its first terminal connected to the positive terminal of the second inductor and the positive terminal of the auxiliary light-emitting diode, its second terminal connected to the negative terminal of the auxiliary light-emitting diode, and its control terminal connected to the auxiliary pulse controller. An auxiliary resistor, one end of which is connected to the negative terminal of the auxiliary pulse controller and the auxiliary light-emitting diode, and the other end is grounded; An auxiliary grounding diode is provided, with its positive terminal grounded and its negative terminal connected to the second terminal of the first auxiliary switch.

12. A white light color adjustment device, comprising: A target light color determiner is configured to determine the target light color that the light emitted by a light-emitting device needs to be adjusted to. The light-emitting device includes a main light source and an auxiliary light source. The main light source is configured to emit white light, and the target light color is adjusted based on the white light. The color temperature difference between the light emitted by the auxiliary light source and the light emitted by the main light source is less than a preset threshold. A power ratio determiner is configured to determine the power ratio between the main light source and the auxiliary light source based on the target light color. A power regulator is configured to adjust the power of the main light source and the power of the auxiliary light source according to the power ratio, so that the light emitted by the light-emitting device achieves the target light color.

13. An electronic device, comprising: processor; as well as A memory configured to store executable instructions of the processor; The processor is configured to execute the executable instructions to implement the white light color adjustment method as described in any one of claims 1 to 8.

14. A computer-readable medium having a computer program stored thereon, which, when executed by a processor, implements the method for adjusting the color of white light as described in any one of claims 1 to 8.

15. A computer program product, the computer program product or computer program comprising computer instructions stored in a computer-readable storage medium; The processor of the computer device reads the computer instructions from a computer-readable storage medium, and executes the computer instructions to cause the computer device to perform the white light color adjustment method according to any one of claims 1 to 8.

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