Image frame interpolation apparatus, display apparatus and control method thereof

A display apparatus comprising:

• a broadcast receiver configured to receive a broadcast signal;
• a video processor configured to convert a frame rate of a video signal included in the received broadcast signal;
• and
• a display configured to display the video signal having the converted frame rate,
• wherein the video processor comprises an internal memory and is configured to:
• generate a motion vector based on a first image frame and a second image frame included in the video signal using a first memory size in the internal memory;
• scale the motion vector based on a size of the motion vector and a size of the internal memory to thereby generate a scaled motion vector, and
• perform motion compensation based on the scaled motion vector and generate an interpolation frame using a second memory size in the internal memory,
• wherein the video processor is configured to generate a plurality of motion vectors including the motion vector, and determine a scaling value that prevents a size of a motion vector having a largest motion value among the plurality of motion vectors from exceeding a search range stored in the internal memory,
• wherein the second memory size is smaller than the first memory size by a predetermined size.

A method for controlling an image frame interpolation apparatus, the method comprising:

• generating a motion vector based on a first image frame and a second image frame using a first memory size in a memory configured to be used in motion compensation;
• scaling the motion vector based on a size of the motion vector and a size of the memory;
• and
• performing the motion compensation based on the scaled motion vector and generating an interpolation frame using a second memory size in the memory,
• wherein the generating the motion vector further comprises generating a plurality of motion vectors including the motion vector,
• wherein the method further comprises determining a scaling value that prevents a size of a motion vector having a largest motion value among the plurality of motion vectors from exceeding a search range stored in the memory, and
• wherein the second memory size is smaller than the first memory size by a predetermined size.

A method for controlling a display apparatus, the method comprising:

• receiving a broadcast signal;
• converting a frame rate of a video signal included in the received broadcast signal;
• and
• displaying the video signal having the converted frame rate,
• wherein the converting the frame rate comprises:
• generating a motion vector based on a first image frame and a second image frame included in the video signal using a first memory size in an internal memory,
• scaling the motion vector based on a size of the motion vector and a size of a memory configured to be used in motion compensation, and
• performing motion compensation based on the scaled motion vector and generating an interpolation frame using a second memory size in the internal memory,
• wherein the generating the motion vector further comprises generating a plurality of motion vectors including the motion vector, and
• the method further comprises determining a scaling value that prevents a size of a motion vector having a largest motion value among the plurality of motion vectors from exceeding a search range stored in the memory,
• wherein the second memory size is smaller than the first memory size by a predetermined size.

A video apparatus comprising:

• a receiver configured to receive a frame of a video;
• and
• a video processor comprising an internal memory, the video processor configured to:
• scale a motion vector obtained from the frame of the video to thereby generate a scaled motion vector using a first memory size in the internal memory;
• and
• perform motion compensation based on the scaled motion vector using a second memory size in the internal memory,
• wherein the video processor is configured to scale the motion vector based on a search range of the internal memory, and
• wherein the video processor is configured to determine a scaling value that prevents a size of a motion vector having a largest motion value among a plurality of motion vectors including the motion vector from exceeding the search range stored in the internal memory,
• wherein the second memory size is smaller than the first memory size by a predetermined size.