Goldstar, Co., Ltd.

Joon P Chang

Choon Lee

Yong H Lee

Sung K Cho

An apparatus for controlling a buffer adapted to transmit motion-involving video compressed by use of an intraframe compression coding technique employing discrete cosine transform and variable length coding to a constant rate channel, wherein a statistical feed-forward-based buffer control apparatus having a simple construction is combined with an existing statistical feed-back-based buffer control apparatus, thereby being capable of stably controlling a buffer even when a scene change occurs, and reducing the capacity of the buffer and the length of a tape needed. The apparatus includes an encoder for encoding input video data to be compressed, and a feed-forward-based division factor selector for receiving an output signal from the encoder, calculating the complexity of each frame based on the received signal, estimating the quantity of data to be generated by units of a predetermined number of discrete cosine transform blocks, and sending a division factor corresponding to the estimated quantity of data to the encoder.

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Seoul, South Korea

Joon P Chang