| 摘要 |
A unified software apparatus and method for evaluating a generic electrical signal and complex multiple-format video signals. The methods may be operated manually or programmatically and are especially intended for evaluating analog signals within an automated testing environment. The test signal data is supplied by an external source such as an external hardware digitizer or other means. This signal data may be analog or digital in nature and may comprise up to three separate channels. The apparatus generates visual aids and supporting numerical computations, resulting in concrete and tangible results, allowing analysis based upon user selected criteria such as voltage measurements, histograms, frequency domain computations, or total harmonic distortion. In addition to these methods, video waveforms may be analyzed for content based upon numerical measurements applied to a region-within-a-region concept. Within a definable "region of interest", a section of the test video signal's content may be isolated and compared to a surrounding "region of interest" to determine the accuracy of image placement and intensity. |
