Patent ID: 6862043
Filing Date: 2005-03-01
Classification: G06T,H04N

Abstract:
1. A device for converting a video format, comprising: a controller determining a conversion equation to convert a video signal into a desired format based on a conversion mode, the conversion equation have a numerator portion and a denominator portion, and outputting control signals based on the determined conversion equation; a numerator generating unit receiving at least one of a present video signal and a previous video signal, configuring to calculate the numerator portion of the conversion equation in response to the control signals, and calculating the numerator portion using the received at least one of present and previous signals; a denominator generating unit receiving output of the numerator generating unit, configuring to divide the output of the numerator generating unit by the denominator portion in response to the control signals, and dividing the output of the numerator generating unit by the denominator portion to obtain output video signal of the desired format; an operand mapping unit receiving the present luminance signal and the previous luminance signal, and selectively supplying the present luminance signal and the previous luminance signal to components of the numerator generating unit; an averaging unit averaging the present chrominance signal and the previous chrominance signal to obtain and averaged chrominance signal; a first multiplexer selectively outputting one of the averaged chrominance signal and the present chrominance signal; a second multiplexer selectively outputting one of the averaged chrominance signal and the previous chrominance signal; and an operand mapping unit receiving output from the first and second multiplexers, and selectively supplying the output from the first and second multiplexers to components of the denominator generating unit.