Data loading method and video equipment of onscreen display menu

Abstract

The invention discloses a data loading method of an onscreen display menu and video equipment using the data loading method, and relates to the onscreen display menu technology, and can effectively reduce loading time of data in the onscreen display menu and improve speed of the onscreen display menu. The technical scheme provided by the invention comprises the following steps of receiving data loading request instruction by a control unit; starting a direct memory access to call and load data of the onscreen display menu from a first memory; controlling reading and writing of data in the first memory by the direct memory access in the process of data loading; stopping controlling the first memory by the control unit; restoring control on the first memory by the control unit after finishing the data loading of the onscreen display menu.

Description

technical field [0001] The invention relates to screen display menu technology, in particular to a data loading method of a screen display menu and video equipment applying the data loading method. Background technique [0002] With the development of technology, the functions of electronic consumer products are becoming more and more powerful, and the corresponding devices used with them are becoming more and more complex, such as digital TV set-top boxes, satellite receivers, cameras and VCD / DVD players, etc., in order to facilitate For user use, many products have an On Screen Display (OSD) function. [0003] OSD technology refers to a technology that displays the status information of each parameter that can be set on a visual interface when the user controls the product. In the early days, OSD technology mainly displayed status information about the parameters of the display itself (such as brightness, color, contrast, hue, etc.). , degaussing and other status informa...

AI Technical Summary

Problems solved by technology

[0007] However, since the access of material data and instruction codes in the prior art is completed by FLASH, it takes too long to load the material data into the OSD function module, causing the user to watch the picture displayed by the OSD, and the picture delay is relatively long. Obviously, the problem of screen lag has affected the user's use effect

Moreover, when performing on-screen display menus, the MCU can only perform data processing related to the realization of the on-screen display menu functions, and cannot perform other tasks, resulting in a low utilization rate of the MCU

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