Multi-menu co-screen playing method

Abstract

The invention relates to a method for displaying sub images on one display. Wherein, the invention only needs to independently store the data of sub image without storing the displaying data, to reduce the memory space of main memory; when displaying, it can dynamically adjust each sub image via the sub image zoom device, to flexibly control the memory distribution of main memory, and can select abalance point between the memory demand and the display effect; when playing, it can use special display control strategy to assembly the display data of several sub images, to dynamically adjust multi sub images, in different display modes, while it can freely switch the display mode.

Description

technical field [0001] The invention belongs to the field of digital processing of video signals, in particular to a method for simultaneously displaying multiple sub-pictures on a display device. By dynamically adjusting the display layout of sub-pictures during playback, the method makes the multi-sub-picture display function more abundant and flexible on the same screen. Background technique [0002] In the application of digital processing of video signals such as digital television receivers and multimedia video players, it is a very important function to simultaneously display multiple sub-pictures with different contents on one display device. In a digital television receiver, when using multi-sub-pictures to play on the same screen, the content of each sub-picture comes from a different channel when searching for channels. Using the function of multi-sub-pictures to display on the same screen can make the user fast and intuitive at the same time. Browse what's playi...

AI Technical Summary

Problems solved by technology

[0005] This traditional storage and playback strategy is too simple to deal with the same-screen playback of multiple sub-pictures and has many shortcomings. First, the storage area allocated to multi-sub-pictures on the same screen in the main memory is fixed. Store the data of all sub-picture display areas on the screen and the playback data of the filling area between the sub-picture display areas. This causes a waste of storage space, especially in applications with tight storage space, this waste is often intolerable .Secondly, the single playback method makes it impossible to dynamically adjust the size and position of each sub-picture and the filling area between sub-pictures. For example figure 1 In the scheme shown, when it is necessary to enlarge the size of the sub-picture display area and reduce the size of the padding area between the sub-pictures, it is necessary to re-decode the data of the 9 sub-pictures with the decoding device 101, and use the down-sampling device 102 re-sample and reduce the original size of the image, and re-store it in the main storage device 103. This will obviously reduce the response speed and cause serious loss to the user experience. At the same time, the single playback method makes it impossible to dynamically adjust the size of a certain sub-picture. Display size and position. For example, the user is interested in a certain picture in multiple sub-pictures and wants to enlarge it separately. Later, the user needs to reduce this picture back to its original size, and hope that there is no obvious pause in the picture during this process. It is difficult to achieve this dynamic adjustment by traditional methods.

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