Shooting apparatus and method for display device

Abstract

The invention discloses a shooting device of a display device and a shooting method thereof. The shooting device comprises a shooting control component connected with a camera and a synchronous detecting component connected with the display device. In the invention, the synchronous signal of the display device is detected by the synchronous detecting component according to the shooting command of the shooting control component; and a shutter opening signal is transmitted to the shooting control component according to the synchronous signal; the shutter opening signal of the shooting control component controls the opening of the shutter of the camera. In the mode, the shooting control component and the synchronous detecting component do not need to be synchronous all the time; and the synchronous detecting component does not need to detect the synchronous signal of the display device all the time, and can detect only after receiving the shooting command; the shooting control component controls the opening of the shooting device according to the signal of the synchronous detecting component; therefore, the invention not only can achieve better synchronous effect, but also can not generate the phenomenon of losing a pulse signal so as to ensure better shooting quality and need not to care the refresh cycle of the display device. The invention is convenient to be used.

Description

technical field [0001] The invention relates to the field of photographing a display device, in particular to a photographing device of a display device and a photographing method thereof. Background technique [0002] With the development of computer information technology, the technical application of various electronic equipment is advancing by leaps and bounds, and the application of display equipment for information display and communication is showing a trend of diversification. For example, from the initial TV to the current large screen display system, and in the application of the display device, it is necessary to capture the images displayed by the display device in various occasions, so as to be able to analyze and process these images, for example, it is necessary to save the captured image, However, due to the different display principles of each display device, for example, LCD, PDP and other display devices are based on field and frame scan display devices, w...

AI Technical Summary

Problems solved by technology

[0002] With the development of computer information technology, the technical application of various electronic equipment is advancing by leaps and bounds, and the application of display equipment for information display and communication is showing a trend of diversification. For example, from the initial TV to the current large screen display system, and in the application of the display device, it is necessary to capture the images displayed by the display device in various occasions, so as to be able to analyze and process these images, for example, it is necessary to save the captured image, However, due to the different display principles of each display device, for example, LCD, PDP and other display devices are based on field and frame scan display devices, while CRT and projection display devices are based on In other words, it is a display device with an unknown refresh rate. When shooting these display devices, the expected effect is often not achieved, and it is prone to flickering, stripes, image misalignment, partial black, or even completely black.

A shooting method in the prior art is to continuously send time beat signals between the shooting device and the display device to achieve the purpose of synchronization, and to shoot during synchronization. This method can achieve better shooting during synchronization. The effect, however, is to some extent increase the burden on the equipment due to the non-stop sending of time tick signals, in addition, see figure 1 Shown is a synchronous pulse schematic diagram of the shooting method in the prior art. During the transmission of the synchronous signal, due to problems such as interference, it is likely to cause a pulse signal to be lost, such as figure 1 The pulse signal shown by the dotted line in the center is usually set as a multiple of the refresh cycle of the display device when setting the exposure time. If the pulse signal is lost during the shooting process, the actual exposure time will be longer than the set time. The exposure time is one more refresh cycle, which affects the shooting quality

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