Image display apparatus, image transmitting apparatus, image transmitting method and recording medium

An image transmitting apparatus, comprising:

• a database configured to store a plurality of bit streams having different bit rates;
• a network detector configured to detect change in a network transmission environment;
• a controller configured to select a bit stream from the plurality of bit streams transmittable under the detected network transmission environment;
• and
• a data transmitter configured to transmit the selected bit stream on a per GOP basis,
• wherein the plurality of bit streams include a first bit stream having a first bit rate and having a format defined by a first group of pictures (GOP), and a second bit stream having a second bit rate and having a format defined by a second group of pictures (GOP)s, and
• wherein the transmitted bit stream includes a mixture of the first GOPs from the first bit stream and the second GOPs from the second bit stream in which each of the GOPs included in the transmitted bit stream begins with an intra-frame (I-frame) and ends with the I-frame or a predicted-frame (P-frame), and includes a bidirectional-frame (B-frame) between the beginning and end frames such that the first and second GOPs are reproduced independently from each other.

An image transmitting method comprising:

• storing a plurality of bit streams having different bit rates and each including one or more groups of pictures (GOPs);
• detecting a network transmission environment, and selecting one bit stream from bit streams transmittable under the detected network transmission environment;
• and
• transmitting the selected bit stream on a per GOP basis,
• wherein the plurality of bit streams include a first bit stream having a first bit rate and having a format defined by a first group of pictures (GOP), and a second bit stream having a second bit rate and having a format defined by a second group of pictures (GOP)s, and
• wherein the transmitted bit stream includes a mixture of the first GOPs from the first bit stream and the second GOPs from the second bit stream in which each of the GOPs included in the transmitted bit stream begins with an intra-frame (I-frame) and ends with the I-frame or a predicted-frame (P-frame), and includes a bidirectional-frame (B-frame) between the beginning and end frames such that the first and second GOPs are reproduced independently from each other.