Frame rate converter

A converter, frame rate technology, applied in standard conversion, conversion by interpolation processing, by changing the direction of field conversion of the input video signal, etc., can solve problems such as image quality degradation, low image quality, etc.

Inactive Publication Date: 2007-07-18
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, displaying a motion-interpolated frame on the display portion has lower image quality than displaying a duplicate frame on it when the motion estimation is wrong
Degraded image quality due to reuse of motion interpolated frames and repeated interpolated frames

Method used

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Embodiment Construction

[0053] Exemplary embodiments of the present invention will now be described in detail with reference to examples illustrated in the accompanying drawings, wherein like reference numerals refer to like parts throughout.

[0054] As shown in FIG. 1 , a frame rate converter according to an exemplary embodiment of the present invention includes a motion vector calculator 30 , a motion error calculator 40 , an interpolation frame output part 70 and a controller 50 . The frame rate converter may further include a signal receiver 10 , a signal processor 20 , a memory 60 and a display part 80 .

[0055] The signal receiver 10 receives video signals from an external video source. That is, the signal receiver 10 may include terminals corresponding to formats of various video signals to receive various video signals. The signal receiver 10 according to an exemplary embodiment of the present invention may include: at least one composite input terminal receiving a composite signal; an S-v...

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Abstract

A frame rate converter is provided, and includes a motion vector calculator which calculates a motion vector; a motion error calculator which calculates a motion error level of the motion vector; an interpolation frame output part which generates a repetition interpolation frame, which corresponds to the current frame or the previous frame, and a motion interpolation frame based on the motion vector; and a controller which calculates a frame selection value larger than a preset reference selection value by more than a first level when the motion error level is larger than a reference error level, and calculates a frame selection value smaller than the previous frame selection value by a second level, which is smaller than the first level, when the motion error level is smaller than the reference error level, and controls the interpolation frame output part to output the repetition interpolation frame or the motion interpolation frame based on the calculated frame selection value.

Description

[0001] This application claims priority from Korean Patent Application No. 10-2006-0002749 filed in the Korean Intellectual Property Office on Jan. 10, 2006, which is hereby incorporated by reference in its entirety. technical field [0002] Apparatus consistent with the present invention relates to frame rate converters and, more particularly, to a method for selectively outputting frames interpolated by motion vectors or frames produced by repeating one of two adjacent frames to produce two Frame rate converter for interpolated frames inserted between adjacent frames. Background technique [0003] Generally, a frame rate converter (FGC) converts the frequency of an input video signal according to an output standard. For example, a new interpolated frame is inserted between original frames to convert a video signal from 50Hz to 100Hz. [0004] Methods of generating such an interpolated frame include: a method of repeating an original frame; and a method of calculating a mo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/01
CPCH04N7/0132H04N7/014H04N5/144B28B19/00B05B7/0416B05B1/02
Inventor 权五宰闵钟述成和锡
Owner SAMSUNG ELECTRONICS CO LTD
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