Patent ID: 7737960

Claim:
An apparatus for converting a source frame signal at a first frame rate to a destination frame signal at a second frame rate, the apparatus comprising: a converter for converting the source frame signal to the destination frame signal having a destination clock signal at a destination clock frequency; and a frequency synthesizer for generating the destination clock signal at the destination clock frequency, wherein the destination frame signal includes a last horizontal line defined by a last horizontal sync signal and a vertical sync signal, the last horizontal sync signal being the last of a plurality of horizontal sync signals and the vertical sync signal being generated synchronously with the last horizontal sync signal, wherein the destination clock frequency is adjusted according to an adjustment resolution determined based on a number of visible pixels in each horizontal line, a total number of pixel data for each horizontal line, and a total number of horizontal lines in each frame, wherein the adjustment resolution is approximately satisfied by Adjustment ⁢ ⁢ resolution < 1 2 ⁢ ( HorizontalVisible ) HorizontalTotal · VerticalTotal , wherein the HorizontalVisible parameter refers to the number of visible pixels in each horizontal line, the HorizontalTotaL parameter refers to the total number of pixel data for each horizontal line, the VerticalTotal parameter refers to the total number of horizontal lines in each frame.