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US 8,139,154 B2Granted
Apparatus and method for interpolating a pixel from an intermediate line of a field
AssigneeTrident Microsystems (Far East) Ltd.
InventorsMarko Hahn, Guenter Scheffler, Peter Rieder, Christian Tuschen, Markus Schu
Life of this patent
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Abstract
The invention relates to a method for interpolating a pixel from an intermediate line of a first field of a sequence of interlaced fields.
Claims20
A method for processing a signal sequence having a first output signal value and a second output signal value said method comprising:
- interpolating an intermediate value;
- allocating the intermediate value to the first and the second output signal values;
- determining an interval given by the first output signal value and the second output signal value;
- determining a position of the intermediate value relative to a limit of the interval;
- mixing, via at least one mixer, the output signal values and the interpolated value by multiplying the first output signal value by a first weighting factor, the second output signal value by a second weighting factor, and the interpolated value by a third weighting factor, then adding the weighted image information values to obtain a final value, wherein the value of the third weighting factor is a function of the mathematical distance of the interpolated value from the interval limits and is selected such that the value of the interpolated value to be interpolated lies within the interval.
2 more elements
A system for processing a signal sequence having a first output signal value and a second output signal value, the system comprising:
- a selection device that receives a video signal and provides image information values;
- an analyzer that receives the image information values;
- at least one mixer that receives weighting factors from the analyzer;
- wherein the selection device, the analyzer and the at least one mixer are configured to:
- interpolate an intermediate value;
- allocate the intermediate value to the first and the second output signal values;
- determine an interval given by the first output signal value and the second output signal values;
- and
- determine a position of the intermediate value relative to a limit of the interval;
- and
- wherein the at least one mixer is configured to mix the output signal values and the interpolated value by multiplying the first output signal value by a first weighting factor, the second output signal value by a second weighting factor, and the interpolated value by a third weighting factor, then adding the weighted image information values to obtain a final value, wherein the value of the third weighting factor is a function of the mathematical distance of the interpolated value from the interval limits and is selected such that the value of the interpolated value to be interpolated lies within the interval.
8 more elements
Dependencies are inferred from the claim text.