Unified analog/digital waveform software analysis tool with video and audio signal analysis methods
US6502045B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | May 19, 2000 |
| Grant date | Dec 31, 2002 |
| Priority date | — |
| Expiry date | May 19, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/60
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.