Backlight brightness adjusting method, device and equipment for interphone display screen

Abstract

The invention relates to the technical field of display screens, and discloses a backlight brightness adjusting method, device and equipment of an interphone display screen and a storage medium. The method comprises the steps that illuminance data are acquired, a current illumination intensity value is obtained through a preset brightness adjusting algorithm according to the illuminance data, the illuminance data are obtained through detection of a light sensor, and the light sensor is installed on an interphone; calculating a backlight brightness level required by the interphone display screen according to the current illumination intensity value and a preset light intensity interval; calculating a backlight brightness value according to the backlight brightness level; and transmitting the backlight brightness value to a backlight driving circuit of the interphone display screen, so that the backlight driving circuit adjusts the backlight brightness of the interphone display screen according to the backlight brightness value. In the embodiment of the invention, the backlight brightness of the display screen can be automatically adjusted according to the change of the environment illumination intensity, and the energy consumption of the interphone is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of display screens, and in particular to a backlight brightness adjustment method, device, equipment and storage medium for an intercom display screen. Background Art

[0002] As a convenient communication tool, walkie-talkies are widely used in many fields. Existing walkie-talkie displays often use fixed backlight brightness or require users to manually adjust the backlight brightness. This results in the fixed brightness display being too bright or too dark under different ambient lighting conditions, affecting the user's viewing experience and operational convenience. Although manually adjusting the backlight brightness can solve this problem to a certain extent, it requires users to operate frequently, is not convenient enough, and provides a poor user experience. For example, in a bright environment, a fixed brightness display may be difficult to read; in a dark environment, an overly bright display may be distracting and affect night vision. In addition, fixed backlight brightness will also increase the energy consumption of the walkie-talkie and shorten the battery life. Summary of the invention

[0003] The main purpose of the invention is to solve the technical problem of how to adjust the backlight brightness of the intercom display screen and reduce the energy consumption of the intercom.

[0004] A first aspect of the present invention provides a method for adjusting the backlight brightness of a walkie-talkie display screen, the method comprising:

[0005] Acquire illuminance data, and obtain a current illuminance value according to the illuminance data through a preset brightness adjustment algorithm, wherein the illuminance data is obtained by detecting a light sensor, and the light sensor is installed on the intercom;

[0006] Calculate the backlight brightness level required for the intercom display screen according to the current light intensity value and the preset light intensity range;

[0007] Calculating a backlight brightness value according to the backlight brightness level;

[0008] The backlight brightness value is transmitted to the backlight driving circuit of the intercom display screen, so that the backlight driving circuit adjusts the backlight brightness of the intercom display screen according to the backlight brightness value.

[0009] Optionally, in a first implementation of the first aspect of the present invention, calculating the backlight brightness level required for the intercom display screen according to the current light intensity value and the preset light intensity range includes:

[0010] Obtaining a current light intensity interval according to the current light intensity value and the preset light intensity interval;

[0011] According to the current light intensity interval, the backlight brightness level required for the intercom display screen is calculated.

[0012] Optionally, in a second implementation of the first aspect of the present invention, the acquiring of illuminance data and obtaining a current illuminance intensity value according to the illuminance data by a preset brightness adjustment algorithm includes:

[0013] Acquire illuminance data, and filter out high-frequency noise in the illuminance data through a preset brightness adjustment algorithm, wherein the brightness adjustment algorithm adopts a low-pass filtering algorithm;

[0014] The current light intensity value is calculated based on the filtered light intensity data and the resolution of the intercom display screen;

[0015] When a factor affecting the brightness is detected, the backlight brightness is compensated and adjusted according to the current light intensity value through a predefined compensation model.

[0016] Optionally, in a third implementation of the first aspect of the present invention, the illuminance data is detected by a light sensor and includes:

[0017] The light sensor converts the detected light intensity signal into an electrical signal through the photovoltaic effect;

[0018] amplifying the electrical signal through an operational amplifier circuit and collecting the voltage;

[0019] The voltage is converted into 16-bit binary data through a logic circuit and stored in an internal register, so that the illuminance data can be obtained by reading the register value.

[0020] Optionally, in a fourth implementation of the first aspect of the present invention, the adjustment of the backlight brightness is achieved by changing at least one of the current, voltage and pulse width modulation of the display screen backlight source;

[0021] The backlight driving circuit adjusts the backlight brightness of the intercom display screen according to the backlight brightness value, including:

[0022] If the backlight driving circuit controls the backlight brightness of the intercom display screen by changing the current, then according to the backlight brightness value, the power is adjusted by changing the current to change the backlight brightness;

[0023] If the backlight driving circuit controls the backlight brightness of the intercom display screen by changing the voltage, the power is adjusted by changing the voltage across the backlight source according to the backlight brightness value to change the backlight brightness;

[0024] If the backlight driving circuit controls the backlight brightness of the intercom display screen by changing the pulse width modulation, the power is adjusted by adjusting the duty cycle of the pulse width modulation according to the backlight brightness value to change the backlight brightness.

[0025] Optionally, in a fifth implementation of the first aspect of the present invention, after transmitting the backlight brightness value to a backlight driving circuit of the intercom display screen so that the backlight driving circuit adjusts the backlight brightness of the intercom display screen according to the backlight brightness value, the method further includes:

[0026] After receiving the light intensity change signal sent by the light sensor, the backlight brightness level under the current light intensity is calculated according to the brightness curve set by the user;

[0027] Sending an instruction to the backlight driving circuit enables the backlight driving circuit to readjust the backlight brightness of the intercom display screen according to the backlight brightness level under the current light intensity.

[0028] Optionally, in a sixth implementation of the first aspect of the present invention, before calculating the backlight brightness level under the current light intensity according to the brightness curve set by the user after receiving the light intensity change signal sent by the light sensor, the method further includes:

[0029] Pushing a coordinate graphic interface, wherein the abscissa in the coordinate graphic interface represents the light intensity, and the ordinate in the coordinate graphic interface represents the backlight brightness level;

[0030] By dragging the coefficient value slider or inputting the coefficient value, the set brightness curve is obtained from the coordinate graphic interface.

[0031] The second aspect of the present invention provides a backlight brightness adjustment device for a walkie-talkie display screen, comprising: a memory and at least one processor, wherein instructions are stored in the memory, and the memory and the at least one processor are interconnected via a line; the at least one processor calls the instructions in the memory so that the backlight brightness adjustment device for the walkie-talkie display screen executes the above-mentioned backlight brightness adjustment method for the walkie-talkie display screen.

[0032] A third aspect of the present invention provides a computer-readable storage medium, in which instructions are stored. When the computer-readable storage medium is run on a computer, the computer executes the above-mentioned method for adjusting the backlight brightness of the intercom display screen.

[0033] In the embodiment of the present invention, illuminance data is obtained, and according to the illuminance data, the current illuminance value is obtained by a preset brightness adjustment algorithm, the illuminance data is obtained by detection of a light sensor, and the light sensor is installed on the intercom; according to the current illuminance value and the preset light intensity interval, the backlight brightness level required for the intercom display is calculated; according to the backlight brightness level, the backlight brightness value is calculated; the backlight brightness value is transmitted to the backlight driving circuit of the intercom display, so that the backlight driving circuit adjusts the backlight brightness of the intercom display according to the backlight brightness value. In the present invention, illuminance data is obtained by detection of a light sensor, and the current illuminance value is obtained by a preset brightness adjustment algorithm, and then, according to the current illuminance value, the backlight brightness level required for the intercom display is obtained, and according to the backlight brightness level, the backlight brightness of the intercom display is adjusted, and the backlight brightness of the display can be automatically adjusted according to the change of the ambient light intensity, which not only improves the user experience, but also reduces energy consumption and prolongs the use time of the intercom. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 A schematic diagram of an embodiment of a method for adjusting the backlight brightness of a display screen of an intercom according to an embodiment of the present invention;

[0035] Figure 2 A schematic diagram of an embodiment of a backlight brightness adjustment device for an intercom display screen in an embodiment of the present invention;

[0036] Figure 3 The figure is a schematic diagram of an embodiment of a backlight brightness adjustment device for a walkie-talkie display screen in an embodiment of the present invention. DETAILED DESCRIPTION

[0037] The embodiments of the present invention provide a method, a device, a equipment and a storage medium for adjusting the backlight brightness of a walkie-talkie display screen.

[0038] The embodiments disclosed in the present invention will be described in more detail below with reference to the accompanying drawings. Although certain embodiments disclosed in the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be construed as being limited to the embodiments described herein, which are instead provided for a more thorough and complete understanding of the present invention. It should be understood that the drawings and embodiments disclosed in the present invention are only for exemplary purposes and are not intended to limit the scope of protection disclosed in the present invention.

[0039] In the description of the embodiments disclosed in the present invention, the term "including" and similar terms should be understood as open inclusion, that is, "including but not limited to". The term "based on" should be understood as "based at least in part on". The term "one embodiment" or "the embodiment" should be understood as "at least one embodiment". The terms "first", "second", etc. may refer to different or the same objects. Other explicit and implicit definitions may also be included below.

[0040] For ease of understanding, the specific process of the embodiment of the present invention is described below. Figure 1 , an embodiment of the method for adjusting the backlight brightness of the intercom display screen in the embodiment of the present invention includes:

[0041] S100, obtaining illumination data, and obtaining a current illumination intensity value through a preset brightness adjustment algorithm according to the illumination data.

[0042] In this embodiment, a suitable type of ambient light sensor is selected to ensure that it can accurately sense changes in the light intensity of the surrounding environment. An ambient light sensor is installed at a location such as the front edge of the intercom or above the display screen to minimize interference and improve detection accuracy. Ambient light sensors usually use photosensitive elements, such as photoresistors, photodiodes, or phototransistors, which are sensitive to changes in light intensity in the environment. When light shines on the light sensor, parameters such as resistance, current, or voltage of the photosensitive element will change accordingly. The light sensor converts this physical change into an electrical signal through an internal circuit. The electrical signal is quickly transmitted to the processor control unit of the intercom. The processor in the processor control unit has a built-in brightness adjustment algorithm. Through this brightness adjustment algorithm, the current light intensity value is obtained.

[0043] S200, calculating the backlight brightness level required for the intercom display screen according to the current light intensity value and the preset light intensity range.

[0044] In this embodiment, the ambient light intensity range and the corresponding backlight brightness level are set, and the ambient light intensity is divided into multiple intervals, for example: 0-100 lux is a weak light interval, 101-500 lux is a medium light interval, and 501 lux and above is a strong light interval. The corresponding backlight brightness level is set for each interval, for example, the weak light interval corresponds to a low brightness level (for example, 20% brightness), the medium light interval corresponds to a medium brightness level (for example, 50% brightness), and the strong light interval corresponds to a high brightness level (for example, 80% brightness). After calculating the current light intensity value, according to the preset light intensity interval, the light intensity interval corresponding to the current light intensity value is found, and the backlight brightness level required for the intercom display is calculated through the light intensity interval. For example, if the current light intensity is 120 lux, it belongs to the medium light interval (101-500 lux), and the corresponding backlight brightness level is the medium brightness level.

[0045] S300, calculating a backlight brightness value according to the backlight brightness level.

[0046] In this embodiment, the range of brightness levels is first determined, and then the backlight brightness value can be calculated based on the backlight brightness level. Then, the processor control unit sends an instruction to the display control unit to control the backlight drive circuit of the display, and the instruction carries the backlight brightness value.

[0047] S400, transmitting the backlight brightness value to the backlight driving circuit of the intercom display screen, so that the backlight driving circuit adjusts the backlight brightness of the intercom display screen according to the backlight brightness value.

[0048] In this embodiment, the hardware optimizes the memory configuration, selects high-speed, large-capacity memory, ensures that the control unit can quickly read and write data, and sufficient memory capacity can avoid data exchange delays caused by insufficient memory, while high-speed memory can reduce the time for data reading and writing. For the display tasks in the software, by setting the priority of the task, the tasks related to the display screen response are set to high priority, and the processor resources are allocated preferentially to reduce the task waiting time. At this time, the display screen control unit can quickly receive the backlight brightness information sent by the processor and adjust the backlight brightness of the display screen in time, which ensures that when the ambient light changes, the display screen can quickly adapt to the new lighting conditions to avoid delays or inadaptability. Specifically, the processor control unit transmits the backlight brightness value to the backlight drive circuit of the intercom display screen control unit, and the backlight drive circuit adjusts the backlight brightness of the intercom display screen according to the backlight brightness value.

[0049] In an optional implementation of the first aspect of the present invention, calculating the backlight brightness level required for the intercom display screen according to the current light intensity value and the preset light intensity interval includes:

[0050] According to the current light intensity value and the preset light intensity interval, the current light intensity interval is obtained; according to the current light intensity interval, the backlight brightness level required for the intercom display screen is calculated.

[0051] In this embodiment, first, the ambient light intensity interval is determined, and the obtained ambient light intensity value is compared with the set interval to determine the interval in which the current ambient light is located. For example, the light intensity interval is divided into 100 intervals, and the percentage is the interval. The current illumination intensity interval = (current illumination intensity / maximum acquired illumination intensity)*100% = (current illumination intensity / (65535 / 1.2))*100%. Then, according to the backlight brightness level corresponding to the current ambient light intensity interval, the specific backlight brightness value is calculated. The backlight brightness level = the current ambient light intensity interval * the maximum brightness of the display screen (nits). For example, when the ambient light intensity interval is 50%, if the maximum brightness of the display screen is 1000nits, the calculated backlight brightness value is 500nits.

[0052] In an optional implementation of the first aspect of the present invention, obtaining illuminance data, and obtaining a current illuminance intensity value according to the illuminance data by a preset brightness adjustment algorithm includes:

[0053] The illumination data is obtained, and the high-frequency noise in the illumination data is filtered out through a preset brightness adjustment algorithm, and the brightness adjustment algorithm adopts a low-pass filtering algorithm; the current illumination intensity value is calculated based on the filtered illumination data and the resolution of the intercom display screen; when factors affecting the brightness are detected, the backlight brightness is compensated and adjusted according to the current illumination intensity value through a predefined compensation model.

[0054] In this embodiment, the brightness adjustment algorithm adopts a low-pass filtering algorithm to filter out high-frequency noise in the light intensity measurement data, so that the collected data is smoother, thereby avoiding frequent fluctuations in the backlight brightness caused by noise interference, ensuring that the brightness of the display screen is uniform and stable, and there will be no flickering or instability. The low-pass filter suppresses high-frequency noise by allowing low-frequency signals to pass, thereby reducing fluctuations and noise interference in the data. In addition, the low-pass filter can also be combined with other technologies, such as dynamic backlight scaling technology, to further optimize the adjustment effect of the backlight brightness. At the same time, a compensation mechanism is added to the brightness adjustment algorithm. When factors that may affect the brightness, such as power supply fluctuations or ambient temperature changes, are detected, the current light intensity value is adjusted through a predefined compensation model to compensate for the backlight brightness. Specifically, first, a light sensor or other measuring device is used to detect the light intensity value of the current environment, and then a difference parameter is calculated based on the difference between the measured light intensity value and the preset brightness standard, and the backlight brightness is adjusted based on the calculated difference parameter. For example, the ambient light intensity is read and mapped to the backlight brightness range, thereby automatically adjusting the backlight brightness.

[0055] In an optional implementation manner of the first aspect of the present invention, the illuminance data is detected by a light sensor and includes:

[0056] The light sensor converts the detected light intensity signal into an electrical signal through the photovoltaic effect; amplifies the electrical signal through an operational amplifier circuit and collects the voltage; converts the voltage into 16-bit binary data through a logic circuit and stores it in an internal register to obtain light intensity data by reading the register value.

[0057] In this embodiment, the light sensor continuously detects the ambient light intensity and transmits the electrical signal to the processor control unit, which amplifies, filters and processes the light sensor signal to remove noise interference. Specifically, the analog signal is converted into a digital signal by an analog-to-digital converter (ADC) to obtain the light intensity data. A digital light intensity sensor integrated chip BH1750 is used. The interior of BH1750 is composed of a photosensitive diode, an operational amplifier, ADC acquisition, a crystal oscillator, etc. The PD diode converts the input light signal into an electrical signal through the photovoltaic effect. After amplification by the operational amplifier circuit, the voltage is collected by the ADC, and then converted into a 16-bit binary number through a logic circuit and stored in an internal register. Among them, the stronger the light, the greater the photocurrent, and the greater the voltage, so the light intensity can be judged by the voltage. However, it should be noted that although the voltage and light intensity are one-to-one corresponding, they are not proportional, so this chip is linearly processed inside, which is why the integrated IC is used instead of the photosensitive diode directly. The BH1750 chip leads to the clock line and data line. The microcontroller can communicate with the BH1750 chip through the I2C protocol, and can extract the illuminance data of the BH1750 chip register. This data is not the measured international standard light intensity value, and calculation is required. The calculation formula is: current light intensity = (current register value * resolution) / 1.2 (unit: lux lx); the register value range is 1-65535; the resolution is 1lx, and the longest measurement time is generally 120ms or 180ms. In this mode, the sensor has higher accuracy and is suitable for scenes with higher requirements for light intensity measurement accuracy.

[0058] In an optional implementation of the first aspect of the present invention, the backlight brightness is adjusted by changing at least one of the current, voltage and pulse width modulation of the display screen backlight source; the backlight driving circuit adjusts the backlight brightness of the intercom display screen according to the backlight brightness value, including:

[0059] If the backlight driving circuit controls the backlight brightness of the intercom display by changing the current, the power is adjusted by changing the current according to the backlight brightness value to change the backlight brightness; if the backlight driving circuit controls the backlight brightness of the intercom display by changing the voltage, the power is adjusted by changing the voltage across the backlight source according to the backlight brightness value to change the backlight brightness; if the backlight driving circuit controls the backlight brightness of the intercom display by changing the pulse width modulation, the power is adjusted by adjusting the duty cycle of the pulse width modulation according to the backlight brightness value to change the backlight brightness.

[0060] In this embodiment, the processor sends the calculated backlight brightness value to the backlight drive circuit control module of the display screen, and the backlight drive circuit controls the brightness of the display screen backlight source by changing parameters such as current, voltage (DAC) or pulse width modulation (PWM) signals. The following describes the process of changing current, voltage and pulse width modulation to control brightness:

[0061] (1) Changing the current to control the brightness. For display backlights, according to the power formula, when the voltage remains basically stable, the current is directly related to the power, and the brightness of the backlight is usually positively correlated with the power, so the brightness can be controlled by changing the current. For example, taking a common LED backlight as an example, suppose a simple backlight drive circuit control module is connected to the LED backlight, and a variable resistor is connected in series in the circuit. When the resistance increases, according to Ohm's law, the current in the circuit will decrease. At this time, the power of the LED backlight decreases and the brightness becomes dimmer; on the contrary, when the resistance decreases, the current increases and the backlight becomes brighter.

[0062] (2) Changing the voltage to control the brightness. Also based on the power formula, in some cases, the power is adjusted by changing the voltage across the backlight source to change the brightness. For some specific display backlight sources, the current-voltage characteristic may be nonlinear, but it still follows the basic principle that voltage changes will cause power and brightness changes. For example, consider a backlight driver circuit that uses a DC-DC boost or buck converter. If you want to increase the brightness of the display backlight source, the DC-DC boost converter in the backlight driver circuit will increase the input lower voltage to a higher output voltage, such as increasing the input voltage to supply the backlight source, so that the voltage across the backlight source increases, the power increases, and the brightness increases. Conversely, reducing the voltage through a buck converter can reduce the brightness.

[0063] (3) Change the pulse width modulation (PWM) signal to control the brightness. The PWM signal is a periodic digital signal. The ratio of its high level time to period is called the duty cycle. When the PWM signal acts on the display backlight, the backlight emits light during the high level period and does not emit light during the low level period. By adjusting the duty cycle, the average power will change, thereby controlling the brightness. The average power is the power of the backlight when the PWM signal is high. For example,

[0064] In an optional implementation of the first aspect of the present invention, after transmitting the backlight brightness value to the backlight driving circuit of the intercom display screen so that the backlight driving circuit adjusts the backlight brightness of the intercom display screen according to the backlight brightness value, the method further includes:

[0065] After receiving the light intensity change signal sent by the light sensor, the backlight brightness level under the current light intensity is calculated according to the brightness curve set by the user; an instruction is sent to the backlight drive circuit to make the backlight drive circuit readjust the backlight brightness of the intercom display according to the backlight brightness level under the current light intensity.

[0066] In this embodiment, an ambient light sensor is installed above the display screen of the intercom, and a user-adjustable brightness curve setting function can be integrated into the software at the same time. A special function module is integrated into the software system of the intercom, allowing the user to adjust the brightness curve according to his or her preferences and usage habits. In actual applications, the brightness curve may not be a simple quadratic function or a linear function. For example, it may be a piecewise function. Under low light intensity (at night), the backlight brightness level increases slowly to avoid the screen being too bright and dazzling in a darker environment; under medium light intensity (indoors), it increases linearly; under high light intensity (daytime), the growth rate gradually slows down to prevent the screen from consuming too much power.

[0067] For example, assuming the current light intensity is x and the backlight brightness level is y;

[0068] Under low light intensity (at night), the function y=coefficient*x, (0.1<coefficient<0.9) can be used to represent the slow increase of the backlight brightness level.

[0069] Under medium light intensity (indoors), the backlight brightness level can be expressed as a linear increase using the function y=x-coefficient (0<coefficient<20).

[0070] Under high light intensity (daytime), the function y=(coefficient A)x+(coefficient B), (0.1≤coefficient A≤0.5, 10<coefficient B≤50) can be used to indicate that the backlight brightness level increases gradually.

[0071] Assume a piecewise function:

[0072] If the current light intensity x=70, since 20≤70<80, the corresponding backlight brightness level y=70-16=54.

[0073] The above coefficients are user-defined settings, which are set according to different light intensity ranges. After setting, they will be saved in the fixed storage area inside the processor and the external storage chip. Of course, there are also factory settings in the processor program. Such data backup ensures stability and prevents abnormalities in the fixed storage area inside the processor and the external storage chip, which may cause abnormalities in the automatic backlight function.

[0074] When the ambient light sensor detects a change in light intensity, the processor automatically adjusts the backlight brightness of the display screen according to the brightness curve set by the user. Specifically, after the processor receives the light intensity change signal sent by the ambient light sensor, it calculates the backlight brightness level that should correspond to the current light intensity according to the brightness curve set in advance by the user; then, the processor sends an instruction to the display control unit, requiring it to adjust the backlight brightness of the display screen to the calculated backlight brightness value. The display control unit adjusts the current, voltage or pulse width modulation signal of the display backlight source according to the instruction, thereby realizing automatic adjustment of the backlight brightness.

[0075] In an optional implementation of the first aspect of the present invention, after receiving the light intensity change signal sent by the light sensor, before calculating the backlight brightness level under the current light intensity according to the brightness curve set by the user, the method further includes:

[0076] Push the coordinate graphic interface, the horizontal axis in the coordinate graphic interface represents the light intensity, and the vertical axis in the coordinate graphic interface represents the backlight brightness level; by dragging the coefficient value slider or entering the coefficient value, the set brightness curve can be obtained from the coordinate graphic interface.

[0077] In this embodiment, the user can set different backlight brightness levels under different light intensities according to personal preferences, which provides users with a personalized experience and meets the needs of different users. After the user enters the brightness curve setting function through the intercom interface, a graphical interface with light intensity as the horizontal axis and backlight brightness level as the vertical axis can be seen. The user can set the desired backlight brightness level under different light intensities by dragging the coefficient value slider, entering the coefficient value, etc. on this interface. For example, the user can set the backlight brightness under strong light to a higher value to ensure that the display screen content can be clearly seen in outdoor environments; in low light environments, the backlight brightness can be set to a lower value to reduce eye fatigue and save power.

[0078] See also Figure 2The second aspect of the present invention provides a backlight brightness adjustment device for a walkie-talkie display screen, the backlight brightness adjustment device for the walkie-talkie display screen comprising:

[0079] The light intensity acquisition module 10 is used to acquire light intensity data and obtain the current light intensity value according to the light intensity data through a preset brightness adjustment algorithm. The light intensity data is obtained by detecting a light sensor, and the light sensor is installed on the intercom;

[0080] The brightness level calculation module 20 is used to calculate the backlight brightness level required for the intercom display screen according to the current light intensity value and the preset light intensity range;

[0081] The brightness value calculation module 30 is used to calculate the backlight brightness value according to the backlight brightness level;

[0082] The brightness adjustment module 40 is used to transmit the backlight brightness value to the backlight driving circuit of the intercom display screen, so that the backlight driving circuit adjusts the backlight brightness of the intercom display screen according to the backlight brightness value.

[0083] In an optional implementation of the second aspect of the present invention, the brightness level calculation module 20 is also used to obtain the current light intensity interval based on the current light intensity value and the preset light intensity interval; and calculate the backlight brightness level required for the intercom display screen based on the current light intensity interval.

[0084] In an optional implementation of the second aspect of the present invention, the light intensity acquisition module 10 is also used to acquire light intensity data, and filter out high-frequency noise in the light intensity data through a preset brightness adjustment algorithm, and the brightness adjustment algorithm adopts a low-pass filtering algorithm; based on the filtered light intensity data and the resolution of the intercom display screen, the current light intensity value is calculated; when factors affecting the brightness are detected, the backlight brightness is compensated and adjusted according to the current light intensity value through a predefined compensation model.

[0085] In an optional implementation of the second aspect of the present invention, the light intensity acquisition module 10 is also used for the light sensor to convert the detected light intensity signal into an electrical signal through the photovoltaic effect; amplify the electrical signal through an operational amplifier circuit and collect the voltage; convert the voltage into 16-bit binary data through a logic circuit and store it in an internal register, so as to obtain light intensity data by reading the register value.

[0086] In an optional implementation of the second aspect of the present invention, the brightness adjustment module 40 is used to adjust the power by changing the current according to the backlight brightness value to change the backlight brightness if the backlight driving circuit controls the backlight brightness of the intercom display by changing the current; if the backlight driving circuit controls the backlight brightness of the intercom display by changing the voltage, then according to the backlight brightness value, the power is adjusted by changing the voltage across the backlight source to change the backlight brightness; if the backlight driving circuit controls the backlight brightness of the intercom display by changing the pulse width modulation, then according to the backlight brightness value, the power is adjusted by adjusting the duty cycle of the pulse width modulation to change the backlight brightness.

[0087] In an optional implementation of the second aspect of the present invention, the backlight brightness adjustment device of the intercom display screen also includes a light intensity change module, which is used to calculate the backlight brightness level under the current light intensity according to the brightness curve set by the user after receiving the light intensity change signal sent by the light sensor; and send instructions to the backlight drive circuit to make the backlight drive circuit readjust the backlight brightness of the intercom display screen according to the backlight brightness level under the current light intensity.

[0088] In an optional implementation of the second aspect of the present invention, the backlight brightness adjustment device of the intercom display screen also includes

[0089] The brightness curve definition module is used to push the coordinate graphic interface. The horizontal axis in the coordinate graphic interface represents the light intensity, and the vertical axis in the coordinate graphic interface represents the backlight brightness level. By dragging the coefficient value slider or entering the coefficient value, the set brightness curve is obtained from the coordinate graphic interface.

[0090] Figure 3 1 is a schematic diagram of the structure of a backlight brightness adjustment device for a walkie-talkie display screen provided by an embodiment of the present invention. The backlight brightness adjustment device 500 for the walkie-talkie display screen may have relatively large differences due to different configurations or performances, and may include one or more processors (central processing units, CPU) 510 (for example, one or more processors) and a memory 520, and one or more storage media 530 (for example, one or more mass storage devices) storing application programs 533 or data 532. Among them, the memory 520 and the storage medium 530 can be short-term storage or permanent storage. The program stored in the storage medium 530 may include one or more modules (not shown in the figure), and each module may include a series of instruction operations in the backlight brightness adjustment device 500 for the walkie-talkie display screen. Furthermore, the processor 510 may be configured to communicate with the storage medium 530 to execute a series of instruction operations in the storage medium 530 on the backlight brightness adjustment device 500 for the walkie-talkie display screen.

[0091] The backlight brightness adjustment device 500 based on the intercom display screen may also include one or more power supplies 540, one or more wired or wireless network interfaces 550, one or more input and output interfaces 560, and / or one or more operating systems 531, such as Windows Server, Mac OS X, Unix, Linux, FreeBSD, etc. It can be understood by those skilled in the art that Figure 3 The structure of the backlight brightness adjustment device of the intercom display screen shown does not constitute a limitation on the backlight brightness adjustment device based on the intercom display screen, and may include more or fewer components than shown in the figure, or a combination of certain components, or a different arrangement of components.

[0092] The present invention also provides a computer-readable storage medium, which may be a non-volatile computer-readable storage medium or a volatile computer-readable storage medium. Instructions are stored in the computer-readable storage medium. When the instructions are executed on a computer, the computer executes the steps of the method for adjusting the backlight brightness of the intercom display screen.

[0093] In the context of the present disclosure, a machine-readable medium may be a tangible medium that may contain or store a program for use by or in conjunction with an instruction execution system, device, or equipment. A machine-readable medium may be a machine-readable signal medium or a machine-readable storage medium. A machine-readable medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, device, or equipment, or any suitable combination of the foregoing. A more specific example of a machine-readable storage medium may include an electrical connection based on one or more lines, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0094] In addition, although each operation is described in a specific order, this should be understood as requiring such operation to be performed in the specific order shown or in a sequential order, or requiring that all illustrated operations should be performed to obtain desired results. Under certain circumstances, multitasking and parallel processing may be advantageous. Similarly, although some specific implementation details are included in the above discussion, these should not be interpreted as limiting the scope of the present disclosure. Some features described in the context of a separate embodiment can also be implemented in a single implementation in combination. On the contrary, the various features described in the context of a single implementation can also be implemented in multiple implementations individually or in any suitable sub-combination mode.

[0095] Although the subject matter has been described in language specific to structural features and / or methodological logical actions, it should be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or actions described above. On the contrary, the specific features and actions described above are merely example forms of implementing the claims.

Claims

1. A method for adjusting the backlight brightness of a walkie-talkie display screen, characterized in that: The backlight brightness adjustment method of the intercom display screen includes: Acquire illuminance data, and obtain a current illuminance value according to the illuminance data through a preset brightness adjustment algorithm, wherein the illuminance data is obtained by detecting a light sensor, and the light sensor is installed on the intercom; Calculate the backlight brightness level required for the intercom display screen according to the current light intensity value and the preset light intensity range; Calculating a backlight brightness value according to the backlight brightness level; The backlight brightness value is transmitted to the backlight driving circuit of the intercom display screen, so that the backlight driving circuit adjusts the backlight brightness of the intercom display screen according to the backlight brightness value.

2. The backlight brightness adjustment method of the intercom display screen according to claim 1 is characterized in that: The step of calculating the backlight brightness level required for the display screen of the intercom according to the current light intensity value and the preset light intensity interval includes: Obtaining a current light intensity interval according to the current light intensity value and the preset light intensity interval; According to the current light intensity interval, the backlight brightness level required for the intercom display screen is calculated.

3. The backlight brightness adjustment method of the intercom display screen according to claim 1 is characterized in that: The step of acquiring the illuminance data and obtaining the current illuminance value through a preset brightness adjustment algorithm according to the illuminance data includes: Acquire illuminance data, and filter out high-frequency noise in the illuminance data through a preset brightness adjustment algorithm, wherein the brightness adjustment algorithm adopts a low-pass filtering algorithm; The current light intensity value is calculated based on the filtered light intensity data and the resolution of the intercom display screen; When a factor affecting the brightness is detected, the backlight brightness is compensated and adjusted according to the current light intensity value through a predefined compensation model.

4. The backlight brightness adjustment method of the intercom display screen according to claim 1 is characterized in that: The illumination data is obtained by detecting the light sensor and includes: The light sensor converts the detected light intensity signal into an electrical signal through the photovoltaic effect; amplifying the electrical signal through an operational amplifier circuit and collecting the voltage; The voltage is converted into 16-bit binary data through a logic circuit and stored in an internal register, so that the illuminance data can be obtained by reading the register value.

5. The backlight brightness adjustment method of the intercom display screen according to claim 1 is characterized in that: The adjustment of the backlight brightness is achieved by changing at least one of the current, voltage and pulse width modulation of the display screen backlight source; The backlight driving circuit adjusts the backlight brightness of the intercom display screen according to the backlight brightness value, including: If the backlight driving circuit controls the backlight brightness of the intercom display screen by changing the current, then according to the backlight brightness value, the power is adjusted by changing the current to change the backlight brightness; If the backlight driving circuit controls the backlight brightness of the intercom display screen by changing the voltage, the power is adjusted by changing the voltage across the backlight source according to the backlight brightness value to change the backlight brightness; If the backlight driving circuit controls the backlight brightness of the intercom display screen by changing the pulse width modulation, the power is adjusted by adjusting the duty cycle of the pulse width modulation according to the backlight brightness value to change the backlight brightness.

6. The backlight brightness adjustment method of the intercom display screen according to claim 1 is characterized in that: After transmitting the backlight brightness value to the backlight driving circuit of the intercom display screen so that the backlight driving circuit adjusts the backlight brightness of the intercom display screen according to the backlight brightness value, the method further includes: After receiving the light intensity change signal sent by the light sensor, the backlight brightness level under the current light intensity is calculated according to the brightness curve set by the user; Sending an instruction to the backlight driving circuit enables the backlight driving circuit to readjust the backlight brightness of the intercom display screen according to the backlight brightness level under the current light intensity.

7. The method for adjusting the backlight brightness of an intercom display screen according to claim 6, characterized in that: If the light intensity change signal sent by the light sensor is received, before calculating the backlight brightness level under the current light intensity according to the brightness curve set by the user, the method further includes: Pushing a coordinate graphic interface, wherein the abscissa in the coordinate graphic interface represents the light intensity, and the ordinate in the coordinate graphic interface represents the backlight brightness level; By dragging the coefficient value slider or inputting the coefficient value, the set brightness curve is obtained from the coordinate graphic interface.

8. A backlight brightness adjustment device for a walkie-talkie display screen, characterized in that: The backlight brightness adjustment device of the intercom display screen comprises: A light intensity acquisition module is used to acquire light intensity data and obtain a current light intensity value according to the light intensity data through a preset brightness adjustment algorithm. The light intensity data is obtained by detecting a light sensor, and the light sensor is installed on the intercom; A brightness level calculation module, used to calculate the backlight brightness level required for the intercom display screen according to the current light intensity value and the preset light intensity interval; A brightness value calculation module, used for calculating a backlight brightness value according to the backlight brightness level; The brightness adjustment module is used to transmit the backlight brightness value to the backlight driving circuit of the intercom display screen, so that the backlight driving circuit adjusts the backlight brightness of the intercom display screen according to the backlight brightness value.

9. A backlight brightness adjustment device for a walkie-talkie display screen, characterized in that: The backlight brightness adjustment device of the intercom display screen comprises: a memory and at least one processor, the memory stores instructions, and the memory and the at least one processor are interconnected via a line; The at least one processor calls the instruction in the memory so that the backlight brightness adjustment device of the intercom display screen executes the backlight brightness adjustment method of the intercom display screen as described in any one of claims 1-7.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the backlight brightness adjustment method of the intercom display screen as described in any one of claims 1 to 7 is implemented.

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