PDP display drive pulse controller for preventing light emission center fluctuation
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United States of America Patent
Stats
-
Oct 8, 2002
Grant Date -
Dec 27, 2001
app pub date -
Jul 27, 2001
filing date -
Sep 25, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A drive pulse controller creates a driving signal for a display device that produces a gradation display. Each field of an input image signal is divided into a plurality of Z weighted subfields. The drive pulse controller determines a number of subfields Z for each field of the input image signal, changes the input image signal into a Z-bit brightness signal, specifies a number of sustain pulses for each subfield within a field, creates a driving signal for each field based on the Z-bit brightness signal and the number of sustain pulses, selects one of light emission time data stored in a time data source based on the determined Z, and calculates a delay time based on the selected light emission time data, such that the most-weighted subfields of consecutive fields having different numbers of subfields Z are positioned substantially at the same time.
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