CN102800300A - Vehicle-mounted machine image display and regulation system and regulation method thereof - Google Patents

Abstract

The present invention relates to the field of in-vehicle electronics, in particular to an in-vehicle image display adjustment system, comprising: a photosensitive signal generation part, a control adjustment part and an image processing part; wherein, the image processing part includes an image enhancement IC (or image processing module ), the photosensitive signal generation part is a photosensitive circuit composed of a photosensitive element and a photoelectric conversion circuit, and the control and adjustment part is a microcontroller (MCU) with a programming function. The present invention can adjust the display effect in real time according to the change of light intensity, which has a high degree of automation and is conducive to driving safety; at the same time, the image adjustment method is to adjust the chromaticity, brightness and contrast of the image signal itself, which has a good adjustment effect and saves energy consumption . The present invention also provides an adjustment method based on the above adjustment system.

Description

A vehicle-mounted machine image display adjustment system and its adjustment method

technical field

The invention relates to the field of vehicle-mounted electronics, in particular to an image display adjustment system for a vehicle-mounted machine and an adjustment method thereof.

Background technique

With the development of the automobile industry, vehicle-mounted computers with display devices have already matured and been widely used. Common vehicle-mounted computers with display devices include vehicle-mounted GPS, vehicle-mounted monitors, etc. As the equipment used in the car, the vehicle-mounted machine needs to be used under the alternating changes of various lighting conditions. In order to achieve a good visual effect, the display effect must be adjusted under different lighting conditions.

At present, the common way to adjust the display effect of the vehicle-mounted machine is to adjust the brightness. However, for most vehicle-mounted display devices, it is usually a liquid crystal display screen, and the brightness is determined by the backlight source. If the brightness is too high, the user will feel that the display screen is bright and dazzling in the case of weak ambient light. The driver's attention affects driving safety. And high brightness often leads to high energy consumption, which does not meet the development requirements of energy-saving and environment-friendly automobiles.

In addition, in the case of strong ambient light, such as when exposed to direct sunlight, due to the reflection of the screen, the image on the display screen is still dark and unclear even after the brightness is increased, especially if the original dark image is only passed through The method of increasing the brightness to improve the display cannot achieve a good visual effect.

In addition, the image display effect of the current vehicle-mounted machine under various light intensities cannot be automatically adjusted, but can only be adjusted by manual buttons. Since various light changes frequently alternately on the car, this manual adjustment method is extremely inconvenient and affects driving safety. In view of this, it is extremely necessary to develop a new vehicle-mounted image display adjustment system that automatically adjusts according to light intensity changes and has a good adjustment effect.

Contents of the invention

Aiming at the defects of the prior art, the purpose of the present invention is to develop a vehicle-mounted machine image display adjustment system that can automatically realize image enhancement according to the environment change.

Another object of the present invention is to provide an adjustment method based on the above image display adjustment system.

To achieve the above object, the present invention adopts the following technical solutions.

A vehicle-mounted machine image display adjustment system, comprising: a light-sensing signal generation part, a control and adjustment part receiving the light-sensing signal, and an image processing part signal-connected to the control and adjustment part, characterized in that the image processing part includes: an image signal A processing module, the image signal processing module is an integrated circuit (IC) with image enhancement function.

As an improvement, the image signal processing module is a circuit module with image enhancement function.

As an improvement, the photosensitive signal generation part is a photoelectric conversion circuit with a photosensitive element, and the photosensitive element is a phototransistor.

As an improvement, the signal generating part is a signal generating circuit with an adjusting knob or an adjusting button.

As an improvement, the control and adjustment part is a microcontroller (MCU) with a programming function or a control circuit that plays a role in control and adjustment.

As an improvement, the light-sensing signal generation part is signal-connected with an integrated circuit (IC) or circuit module with image enhancement function through a microcontroller (MCU).

As an improvement, the control adjustment part is connected with an adjustment signal compensation device.

As an improvement, the adjustment signal compensation device is a signal generating circuit with an adjustment knob or an adjustment button.

As an improvement, the photoelectric conversion circuit, microcontroller and image enhancement IC are integrated on the same circuit board.

Furthermore, the present invention also provides an adjustment method based on the aforementioned image display adjustment system, which adopts the adjustment method of fast brightening and slow darkening, that is, when the light becomes brighter rapidly, the brightness display of the image is enhanced in time, and when the light changes rapidly In dark conditions, the time delay gradually weakens the brightness display of the image, and the delay time is controlled within 3 to 6 seconds.

Compared with the traditional image display adjustment system, the vehicle-mounted machine image display adjustment system provided by the present invention has the following beneficial effects.

1. By adopting a programmable microcontroller and an image processing module with image enhancement function, the comprehensive automatic adjustment of the chromaticity, brightness and contrast of the image signal itself is realized instead of blindly increasing the brightness, which not only has a good adjustment effect, but also saves energy. energy consumption.

2. The use of photosensitive elements, especially the photosensitive triode instead of the commonly used photoresistor, can reduce the interference of temperature drift and improve the measurement accuracy of the photosensitive circuit, and through the design of the photoelectric conversion circuit, it can be realized in real time according to the change of light intensity. The adjustment of image display effect has obvious adjustment effect and high degree of automation, which is also conducive to driving safety.

In terms of adjusting the display effect of the image, the present invention combines the visual experience under the actual lighting change and adopts the adjustment method of fast brightening and slow darkening, that is, when the lighting is rapidly brightening, the brightness display of the image is enhanced in time, In the case of rapid darkening, the time delay will gradually reduce the brightness display of the image until the ideal image adjustment effect is achieved. Such an adjustment method can bring a better visual experience.

Description of drawings

Fig. 1 shows the frame structure diagram of Embodiment 1 of the present invention;

Fig. 2 shows the transformation frame structural diagram of embodiment one of the present invention;

FIG. 3 is a frame structure diagram of Embodiment 2 of the present invention.

Detailed ways

In order to further illustrate the essence of the present invention, the specific embodiments of the present invention are described as follows in conjunction with the accompanying drawings.

Embodiment one

As shown in Figure 1, a vehicle-mounted image display adjustment system includes: a photosensitive signal generation part, a control adjustment part and an image processing part; wherein, the image processing part includes: an image signal processing module, the image signal processing module It is preferably an integrated circuit (IC) with image enhancement function, which is used to adjust the video signal; the photosensitive signal generating part is a photosensitive circuit composed of a photosensitive element and a photoelectric conversion circuit, which is used to convert the change of ambient light intensity into an electrical signal; The control and adjustment part is a microcontroller (MCU) with programming function. In other embodiments, the image signal processing module is a circuit module with an image enhancement function, and the control and adjustment part is a control circuit that functions as a control and adjustment function; it is not limited to this embodiment.

Preferably, the photoelectric conversion circuit, a microcontroller (MCU) and an image enhancement IC are integrated on the same circuit board, and the microcontroller connects the photoelectric conversion circuit and the image processing module with signals. When actually adjusting the image, the photosensitive element senses the light intensity change of the external environment in real time, and converts the optical signal into an electrical signal through a photoelectric conversion circuit and transmits it to the microcontroller; by programming the microcontroller, the electrical signal is converted into an output for image processing The image gain adjustment signal of the module, the image processing module filters and adjusts the received video signal in real time according to the size of the adjusted signal and outputs it to the display for display, so as to achieve the purpose of automatically adjusting the image display effect.

Further, in order to better adjust the image display effect, in this embodiment, the photosensitive signal generation part also includes an adjustment signal compensation device, and the adjustment signal compensation device provides a compensation signal to the control adjustment part through the adjustment knob, which is convenient for the user to adjust the display The effect is fine-tuned, as shown in Figure 2. In other implementation manners, the adjustment signal compensation device is an adjustment button, which is not limited to this embodiment.

In the actual adjustment, in order to achieve a better display effect, combined with the visual experience under the actual light changes, the adjustment method of fast brightening and slow darkening is adopted, that is, when the light becomes brighter rapidly, the brightness display of the image is quickly enhanced, while In the case of rapidly dimming lighting, the time delay gradually reduces the brightness of the image display.

The vehicle-mounted machine image display adjustment system provided in this embodiment realizes comprehensive automatic adjustment of the chromaticity, brightness and contrast of the image signal itself by adopting the automatic adjustment function of the programmable microcontroller and the image processing function of the image processing module, Instead of blindly increasing the brightness, not only the adjustment effect is good, but also the energy consumption is saved. Using photosensitive elements and photoelectric conversion circuits, the image display effect can be adjusted in real time according to changes in light intensity. The adjustment effect is obvious and the degree of automation is high, which is also conducive to driving safety. In terms of image display adjustment, the adjustment method of fast light and slow dark is adopted, which is more humanized and has better visual effects.

Embodiment two

As shown in Figure 3, a vehicle-mounted machine image display adjustment system provided by this embodiment is basically the same in structure as Embodiment 1, the difference is that the signal generation part is a signal generation circuit with an adjustment knob or an adjustment button, namely The electrical signal is output through the knob for the microcontroller to convert into an adjustment signal to adjust the image display effect.

The above specific embodiments have described the essence of the present invention in detail, but the scope of protection of the present invention cannot be limited thereto. Obviously, under the enlightenment of the essence of the present invention, those skilled in the art can also make many improvements and modifications. It should be noted that these improvements and modifications all fall within the protection scope of the claims of the present invention.

Claims (10)

1. A vehicle-mounted machine image display adjustment system, comprising: a photosensitive signal generation part, a control and regulation part that receives the photosensitive signal, and an image processing part connected with the control and regulation part signal, it is characterized in that the image processing part includes an image A signal processing module, the image signal processing module is an integrated circuit (IC) with an image enhancement function. 2 . The image display adjustment system according to claim 1 , wherein the image signal processing module is a circuit module with an image enhancement function. 3 . 3 . The image display adjustment system according to claim 1 , wherein the photosensitive signal generation part is a photoelectric conversion circuit having a photosensitive element, and the photosensitive element is a photosensitive triode. 4 . 4 . The image display adjustment system according to claim 1 , wherein the signal generation part is a signal generation circuit with an adjustment knob or an adjustment button. 5 . The image display adjustment system according to claim 1 , wherein the control and adjustment part is a microcontroller (MCU) with a programming function or a control circuit for controlling and adjusting. 6. The image display adjustment system according to claim 1-5, characterized in that, the photosensitive signal generation part is signal-connected with an integrated circuit (IC) or circuit module with image enhancement function through a microcontroller (MCU). 7. The image display adjustment system according to claims 1-5, characterized in that the control adjustment part is connected with an adjustment signal compensation device. 8 . The image display adjustment system according to claim 7 , wherein the adjustment signal compensation device is a signal generating circuit with an adjustment knob or an adjustment button. 9. The image display adjustment system according to claim 1-5, characterized in that the photoelectric conversion circuit, microcontroller and image enhancement IC are integrated on the same circuit board. 10. An adjustment method based on the aforementioned image display adjustment system, characterized in that it adopts an adjustment method of fast brightening and slow darkening, that is, when the light becomes brighter rapidly, the brightness display of the image is enhanced in time, and when the light is rapidly dimmed In the case of delay, the brightness of the image will be gradually weakened, and the delay time will be controlled within 3 to 6 seconds.

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