Testing method for components with reception capabilities
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United States of America Patent
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Sep 17, 2002
Grant Date -
N/A
app pub date -
Oct 7, 1999
filing date -
Oct 7, 1999
priority date (Note) -
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Abstract
A method for comparing the quality of components with signal reception capabilities. The method generally includes the steps of: (1) providing at least two test vehicles, each equipped with a component to be tested, (2) providing each vehicle with a device for recording the output of the component to be tested, (3) providing at least one of the two vehicles with a video recording device, (4) simultaneously traveling a test route with the two vehicles remaining in close proximity, (5) recording the output signals of the two components to be tested as the vehicles travel the test route, (6) providing a video recording of the vehicles traveling the test route and (7) comparing the recorded signals of the two components while taking into consideration environmental conditions shown in the video recording. The present invention also provides a method for automatically rating the sound quality of a recorded FM broadcast. The method generally includes the steps of (1) computing the average signal level at a frequency above the normal FM modulation frequency, (2) computing the average signal level of the FM pilot signal and (3) subtracting the average signal level computed in step (1) from the average signal level of the FM pilot signal.
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