Method and apparatus for transitioning from a first display format to a second display format
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United States of America Patent
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May 8, 2012
Grant Date -
Jun 3, 2010
app pub date -
Jun 21, 2007
filing date -
Jun 21, 2007
priority date (Note) -
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Abstract
A letterbox detector includes a detection module configured to determine aspect ratio changes in an input signal. A transition module is configured to transition between a plurality of display modes associated with the aspect ratio changes. A first display mode to a second display mode transition is performed over a first period of time, and a second display mode to a first display mode is performed gradually over a second period of time, that is different from the first period of time. The letterbox detector may be included in digital and analog displays.
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