Television – Video display – Projection device
Patent
1998-03-26
1999-10-05
Kostak, Victor R.
Television
Video display
Projection device
348806, H04N 323
Patent
active
059632747
ABSTRACT:
Vertical/horizontal interpolation device and method in a convergence system is provided that includes a horizontal high order interpolating part for conducting horizontal high order interpolations for convergence adjustment data of preset positions using received horizontal/vertical convergence adjustment data regardless of the modes. The modes can include, for example, overscan, underscan and 4:3 modes. An adjustment point processing part processes adjustment point data for convergence adjustment data of the preset positions of the received horizontal/vertical convergence adjustment data. A first horizontal first order interpolating part conducts horizontal first order interpolations for convergence adjustment data of the preset positions of the received horizontal/vertical convergence adjustment data in the overscan mode and the 4:3 mode and a second horizontal first order interpolating part conducts horizontal first order interpolations for convergence adjustment data of the preset positions of the received horizontal/vertical convergence adjustment data in the underscan mode. A vertical interpolation processing part selects an interpolated data in response to a mode selecting signal of interpolated data from each of the parts and conducts vertical first and high order interpolations for the selected vertical interpolation data of the horizontal/vertical convergence interpolated data, which was previously horizontally interpolated and adjustment point processed. Thus, the vertical/horizontal interpolation device and method performs effective interpolation for at least three modes using a simple hardware based system and method.
REFERENCES:
patent: 5537159 (1996-07-01), Suematsu et al.
patent: 5790210 (1998-08-01), Kim et al.
Huang Sam
Kostak Victor R.
LG Electronics Inc.
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