Electronic device and processing method for displayed data thereof

Abstract

The invention provides an electronic device and a processing method for displayed data thereof. The electronic device is used for supplying the displayed data to a display device and comprises a graphical processing module, a signal converter and a selector, wherein the graphical processing module is used for generating first displayed data with a first format according to original data; the signal converter is used for reducing the first displayed data into the original data; the selector is used for selectively supplying the first displayed data to the display device or the signal converter according to a selection signal; when the graphical processing module receives the original data from the signal converter, second displayed data with a second format are supplied to the display device; the first format and the second format are compatible with different interface specifications. The electronic device can improve the encoding efficiency of an extracted image, so that an effect of improving the frame rate can be achieved.

Description

technical field [0001] The present invention relates to an electronic device and a method for processing display data thereof, in particular to an electronic device capable of providing display data to a display device and a method for processing display data thereof. Background technique [0002] Generally speaking, video data is transmitted to a display device through a video display interface such as VGA / HDMI for display. In recent years, with the improvement of various transmission interface technologies and the vigorous development of wireless network applications, the demand for wireless audio and video transmission is also increasing day by day, so that video data can also be transmitted to display devices for display through various communication interfaces. Generally, the display method through a communication interface such as a WIFI interface or a USB interface extracts raw data currently displayed on the screen from a frame buffer. However, since the size of the...

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Problems solved by technology

However, since the size of the extracted raw data may exceed the bandwidth limit of the communication interface, the bandwidth of the communication interface cannot be loaded. Therefore, the central processing unit (CPU) will be used to perform an image encoding operation first, and then the image data will be compressed to meet the communication requirements. Interface Bandwidth Requirements

Since the image extraction and encoding processes are all operated by the central processing unit, system resources are taken up by it. If you run some high-quality videos (such as 1080P videos) or some software that consumes resources at this time, it will cause The slowness in system execution affects the execution efficiency of image extraction and encoding processing, which in turn affects the frame rate of the display method through a communication interface such as a WIFI interface or a USB interface

[0003] In addition, in terms of the performance of the current wireless display, due to the limitation of image extraction and wireless transmission bandwidth and transmission channel quality and other factors, the quality and speed of viewing are always the same as through the image display interface such as The playback effect played by VGA / HDMI interface cannot match

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