Display system and method of converting sync signal thereof

A method of converting a sync signal of a display system comprising a video signal supplier supplying a video signal, and a display apparatus supporting one of a first video signal standard comprising a first sync signal format and a second video signal standard comprising a second sync signal format, and outputting the video signal from the video signal supplier, wherein the first sync signal format is at least partially different than the second sync signal format, the method comprising:

• selecting one of the first video signal standard and the second video signal standard which based on which one of the first and second video signal standards is supported by the display apparatus;
• and
• converting a sync signal of the input video signal into the first sync signal format or the second sync signal format if a selected one of the first video signal standard and the second video signal standard does not correspond to a video standard of the input video signal, and providing a converted sync signal the video signal supplier to output to the selected display apparatus,
• wherein the step of selecting includes selecting one of a first display device which supports the first sync signal format and a second display device which supports the second sync signal format.

A display system comprising:

• a video signal supplier receiving and decoding an encoded broadcast signal, and outputting a video signal;
• a display apparatus supporting one of a first video signal standard comprising a first sync signal format and a second video signal standard comprising a second sync signal format, and receiving the video signal from the video signal supplier, wherein the first sync signal format is at least partially different than the second sync signal format;
• a selector selecting one of the first video signal standard and the second video signal standard based on which one of the first and second video signal standards is supported by the display apparatus;
• and
• a sync signal converter receiving a sync signal of a decoded broadcast signal from the video signal supplier, converting a format of the sync signal to the first sync signal format or the second sync signal format according to an output signal of the selector, and providing a converted sync signal the video signal supplier to output the selected display apparatus, wherein the converter does not convert the format of the sync signal when the display apparatus supports a video standard corresponding to the decoded broadcast signal,
• wherein the selector is connected to the sync signal converter such that the sync signal converter receives a selection from the selector as an input to initiate the conversion performed by the sync signal converter.