Streaming server and mobile terminal for reducing channel-changing delay, and a method therefor

A mobile terminal for reducing a zapping delay, the mobile terminal comprising:

• a duration data reception unit to receive duration data of time-slice for each channel;
• a channel selection unit to select a viewing channel, and to set a reception duration for receiving data of the selected viewing channel;
• a channel data reception unit to receive main stream data and preview stream data of the selected viewing channel, for each reception duration;
• a channel management unit to change received channel data in response to a channel change request;
• and
• an output unit to output a screen based on the received channel data,
• wherein the output unit outputs the screen using base layer data of a changed channel included in the preview stream when the channel change request is received.

A streaming method for reducing a zapping delay, the streaming method comprising:

• classifying each of a plurality of channel data into base layer data and expansion layer data;
• coding the classified data;
• dividing the coded data for each channel in a time-slice unit;
• transmitting duration data of time-slice for each channel;
• and
• transmitting the coded data divided in the time-slice unit, in a predetermined time,
• wherein the transmitting of the coded data divided in the time-slice unit transmits a main stream including the base layer data and the expansion layer data, for each channel, and transmits a preview stream including the base layer data of all channels.