Method and apparatus for Y/C separation
AssigneeRealtek Semiconductor Corp.
InventorPo-Wei Chao
Life of this patent
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Abstract
A method for separating luminance (Y) and chrominance (C) of composite signals is presented. The method includes the process of determining whether a target position of a target field has motion and whether the image of the target position meets a predetermined condition. If the target position of the target field has motion and the image of the target position meets the predetermined condition, an inter-field Y/C separation for video signals corresponding to the target position of the target field is performed.
Claims37
An Y/C separation method, comprising:
- generating a first motion value corresponding to a target position of a target field;
- performing a motion detection for the target position;
- generating at least one second motion value, whereas each of the at least one second motion value corresponds to a reference position regarding the target position;
- and
- determining whether an inter-field Y/C separation operation or an intra-field Y/C separation operation is to be performed on a video signal corresponding to the target position, which is determined according to the motion detection result and the first and second motion values.
An Y/C separation method, comprising:
- determining if a target position of a target field has motion;
- determining if an image corresponding to the target position meets a predetermined condition;
- and
- if the target position has motion and the image corresponding to the target position meets the predetermined condition, a 3D comb filtering operation to separate a luminance signal and a chrominance signal from a video signal corresponding to the target position is performed.
An Y/C separating apparatus, comprising:
- a motion detector for determining if a target position of a target field has motion;
- an image feature detector for determining if an image corresponding to the target position meets a predetermined condition;
- a decision unit for generating a control signal according to the determining results of the motion detector and the image feature detector;
- and
- a filter bank for performing an Y/C separation operation to separate a luminance signal and a chrominance signal from a video signal corresponding to the target position according to the control signal.
Dependencies are inferred from the claim text.