Vertical/horizontal interpolation device and method in convergence system

• Main Author: YOUN; IN SOO
• Format: Patent
• Language: English
• Published: 05.10.1999
• Edition: 6
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; PICTORIAL COMMUNICATION, e.g. TELEVISION

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.