| 摘要 |
A method of displaying multi-channel waveforms, which is used for displaying multi-channel waveforms dynamically in embedded systems, the method comprising the steps of: dividing at least one waveform screen in a video memory which is mapped to a display terminal into a plurality of waveform windows, wherein boundaries of each of the windows are defined by a plurality of values set in at least a set of boundary registers; establishing a waveform parameter table in a memory of the system, which contains characteristic parameters of each waveform in each of the waveform windows; writing waveform data into a logical space in the waveform screen corresponding to a waveform by writing operations from CPU to the video memory; and on a basis of the parameters of the waveform windows in the waveform parameter table, performing a display mode defined by the parameter by means of is changing the mapping relationship between the video memory and the display terminal, before transmitting the data of each of the waveform windows read out from the video memory to the display terminal by a display drive circuit. According to the method of present invention, the inconsistency between the increase of waveforms and the resultant significant increase of logic resources and degradation of the performance of chips for display can be solved, which enables the system advantageous in high efficiency, low cost and excellent extensibility.
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