| 摘要 |
PURPOSE: A justification of the screen size and position of an image display system is provided by recompensing the justification data of a screen size and position in order that the timing information regarding to a synchronizing signal and an image signal, that have been furnished from PC, may be appropriate to the character of the image display system. CONSTITUTION: A justification method of the screen size and position of the image display system contains the following steps: from the image display system having PC and micro controller unit, the first step to discriminate that the synchronizing signal correspond to the synchronizing signal having been discriminated previously through discriminating periodically that all the horizontal synchronizing signal and vertical synchronizing signal are input together from PC through micro controller unit; the second step to configure a display environment and a S curve correction so as to coincide to a frequency of existing input synchronizing signal in the case of the signal capable of a regular operation, and to maintain the screen with an off-state in the case of the signal incapable of the regular operation, by discriminating that the synchronizing signal is the signal capable of operating the image display system regularly; the third step to check whether the timing data input or not from PC, and to discriminate that the polarity of every frequency correspond to the input synchronizing signal; and the fourth step to output the justification data of the screen size and position from the third step, and to control the screen size and position according to the justification data.
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