Noise reduction in high definition television signals
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United States of America Patent
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-
Jun 25, 1991
Grant Date -
N/A
app pub date -
Jun 16, 1989
filing date -
Mar 30, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In a high definition multiplexed analog component system, a high definition signal is processed by splitting it into high and low frequency components and pre-emphasizing the high frequency component with a non-linear characteristic and at the receiver a complementary de-emphasis process is applied to produce a noise-reduced high definition signal compatible with existing conventional receivers. A processor of a pre-connector for the high definition signal can be used for intersample interference due to non-compatibility between the pre and de-emphasis characteristics in a digital implementation of the system.
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