Computer system, and video decoder used in the system

A display control device comprising:

• a decoder configured to decode video contents data to produce television field data wherein the video contents data includes at least one of interlace field data and progressive frame data and output television field data, the video contents data further including a repeat flag indicating whether repeat field data is to be output from the decoder, the decoder further configured to output the television field data and the repeat flag to a graphic controller, wherein:
• the graphic controller is connected to the decoder and configured to convert the television field data into non-interlace frame data based on the repeat flag such that the graphic controller skips the television field data for conversion if the repeat flag indicates that repeat field data is to be output,
• the decoder is further configured to output a vertical sync signal to the graphic controller and, if the repeat flag indicates that the repeat field data is to be output, to mask the vertical sync signal,
• the graphic controller is further configured to capture the television field data based on the vertical sync signal,
• the decoder is further configured to output a horizontal sync signal to the graphic controller and, if the repeat flag indicates that the repeat field data is to be output, to mask the horizontal sync signal, and
• the graphic controller is further configured to capture the television field data based on the horizontal sync signal.

A display control device comprising:

• a decoder configured to decode video contents data to produce television field data wherein the video contents data includes interlace field data and a repeat flag indicating whether television field data is to be output from the decoder, the decoder further configured to output the television field data, the repeat flag, and a vertical sync signal to the mask circuit;
• a mask circuit, connected to the decoder, configured to mask the vertical sync signal if the repeat flag indicates that the television field data is not output;
• and
• a graphic controller, connected to the mask circuit, configured to capture the television field data based on the vertical sync signal and synthesize two television field data to produce a frame signal, wherein:
• the decoder is further configured to output a horizontal sync signal to the mask circuit, and
• the mask circuit is further configured to mask the horizontal sync signal if the repeat flag indicates that the television field data is not output.

A method for displaying an image, the method comprising:

• decoding video contents data to produce television field data wherein the video contents data includes at least one of interlace field data and progressive frame data, the video contents data further including a progressive flag indicating whether the video contents data is interlace field data or progressive frame data;
• and
• outputting the television field data and the progressive flag and then converting the television field data into non-interlace frame data based on the progressive flag such that one non-interlace frame data is synthesized based on two television field data if the progressive flag indicates that the data is the progressive frame data and one non-interlace frame data is synthesized by interpolating one television field data if the progressive flag indicates that the data is the interlace field data, wherein:
• the video contents data further includes a repeat flag indicating whether a repeat field data is to be output,
• the repeat flag is output,
• the television field data is skipped for converting if the repeat flag indicates that the repeat field data is to be output,
• a vertical sync signal is output and, if the repeat flag indicates that the repeat field data is to be output, the vertical sync signal is masked,
• the television field data is captured for converting based on the vertical sync signal,
• a horizontal sync signal is output and, if the repeat flag indicates that the repeat field data is to be output, the horizontal sync signal is masked, and
• the television field data is captured when converting based on the horizontal sync signal.

A method for displaying an image, the method comprising:

• decoding video contents data to produce television field data wherein the video contents data includes at least one of interlace field data and progressive frame data, the video contents data further including a repeat flag indicating whether a repeat field data is to be output from the decoder;
• and
• outputting the television field data and the repeat flag and then converting the television field data into non-interlace frame data based on the repeat flag such that the television field data is skipped for conversion if the repeat flag indicates that the repeat field data is to be output, wherein:
• a vertical sync signal is output and, if the repeat flag indicates that the repeat field data is to be output, the vertical sync signal is masked,
• the television field date is captured for converting based on the vertical sync signal,
• a horizontal sync signal is output and, if the repeat flag indicates that the repeat field data is to be output, the horizontal sync signal is masked, and
• the television field date is captured for converting based on the horizontal sync signal.

A method for displaying an image, the method comprising:

• decoding video contents to produce television field data wherein the video contents data includes interlace field data and a repeat flag indicating whether the television field data is to be output;
• outputting the repeat flag, the television field data, and a vertical sync signal;
• masking the vertical sync signal if the repeat flag indicates that the television field data is not output and then capturing the television field data for conversion based on the vertical sync signal;
• synthesizing two television field data to produce a frame signal;
• and
• outputting a horizontal sync signal, and if the repeat flag indicates that the television field data is not output, masking the horizontal sync signal.