Display apparatus, 3d glasses, and display system including the same

A display apparatus which communicates with glasses, the display apparatus comprising:

• a signal processor which signal-processes first and second images;
• a display part which outputs the processed first and second images;
• and
• a communication part which transmits, to the glasses, a sync signal and first and second audio signals respectively corresponding to the first and second images.

A display apparatus comprising:

• a receiver which receives first and second image signals, a first audio signal corresponding to the first image signal, and a second audio signal corresponding to the second image signal;
• a display part which sequentially outputs the received first and second images;
• a sync signal generator which generates a first sync signal synchronized to an output timing of the first image signal and a second sync signal synchronized to an output timing of the second image signal;
• a communication part which communicates with a plurality of external devices;
• and
• a controller which transmits the first and second audio signals and the first and second sync signals to the plurality of the external devices through the communication part.

Glasses which interwork with an external display apparatus, the glasses comprising:

• a wireless receiver which receives a sync signal and an audio signal from the external display apparatus;
• a shutter driver which drives shutters according to the received sync signal;
• and
• an audio output part which outputs the audio signal of an image corresponding to the received sync signal.

A display system comprising:

• a display apparatus which alternately outputs first and second images;
• and
• glasses which interwork with the display apparatus,
• wherein the display apparatus transmits a sync signal and an audio signal, and the glasses output the audio signal of the first image corresponding to the sync signal.

A display system comprising:

• a display apparatus which alternately outputs first and second images;
• first glasses which interwork with the display apparatus to reproduce the first image;
• and
• second glasses which interwork with the display apparatus to reproduce the second image,
• wherein the display apparatus transmits a first sync signal synchronized to an outputting timing of the first image, a second sync signal synchronized to an outputting timing of the second image, a first audio signal of the first image, and a second audio signal of the second image, and
• wherein the first glasses output the first audio signal of the first image corresponding to the first sync signal, and the second glasses output the second audio signal of the second image corresponding to the second sync signal.

A method of controlling glasses which interwork with an external display apparatus that alternately displays a first image corresponding to first content and a second image corresponding to second content, the method comprising:

• receiving, by the glasses, a sync signal and an audio signal from the external display apparatus;
• driving shutters of the glasses according to the received sync signal;
• and
• outputting the audio signal of an image corresponding to the received sync signal.