Display method of picture in picture and display system and display device thereof

Abstract

The invention relates to a display method of picture in picture and a display system and a display device thereof. The display system comprises a host computer unit and a display unit. The host computer unit executes a window operating system and a control interface, the control interface produces a control window and a sub picture starting command in the window operating system when starting to execute. The display unit is electrically connected with the host computer unit and can receive at least one external video, and the display unit displays a picture of the window operating system to be used as a main picture and receives the sub picture starting command; the display unit displays the external video to a sub picture less than the main picture according to the sub picture starting command; the display position of the sub picture accords with the display position of the control window, and the display range is less than or equal to the display range of the control window, and the sub picture is shown on the upper layer of the main picture. The invention can avoid system load when the host computer unit processes the video, leads the sub picture to perfectly match with the control window of the control interface, and is very practical like a common window application program.

Description

technical field [0001] The present invention relates to a screen display method and its application, in particular to a picture-in-picture system capable of avoiding the system load when the computer host unit processes video, and perfectly matching the sub-picture with the control window of the control interface. A display method, a display system and a display device thereof. Background technique [0002] For many users, especially students or single renters, most of their living space is a small room. Different hardware devices increase the economic burden. [0003] see figure 1 Shown is a system block diagram illustrating the use of an existing TV card to cooperate with a personal computer to watch video. Therefore, the industry has developed a TV card 111. After the user purchases the TV card 111, the personal computer 1 can be equipped with the function of watching TV programs, which is indeed economical and space-saving. The current existing personal computer 1 wi...

AI Technical Summary

Problems solved by technology

[0005] Although the personal computer 1 installed with the TV card 111 can indeed satisfy the user's demand for replacing the TV with the personal computer 1, and even provide the user with the ability to operate the Windows operating system and watch TV programs at the same time, however, the host computer 11 executes the control program of the TV card 111. time, it will not only consume part of the system resources of the host computer 11, but also occupy the PCI slot of the host computer 11.

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