Patent ID: 7480332

Claim:
A bit rate control method comprising: (a) performing initialization in which a video frame is inputted and a memory is allocated to a rate distortion buffer where an encoded bitstream to be transmitted to a decoder is stored; (b) intra-coding the inputted video frame; (c) updating the rate distortion buffer; (d) performing post-frame skip in which whether or not a next video frame should be encoded is determined to avoid underfiow or overflow of the rate distortion buffer; (e) receiving the next video frame, and estimating a quantization parameter if the received video frame is not a first video object plane, and inter-coding the received video frame if the received video frame is a first video object plane; (f) performing one of a back propagation model update and a self-organizing control based on the number of the inputted video frames after inter-coding the next video frame, and then performing the post-frame skip again; and (g) receiving the next video frame and estimating quantization parameters of all the video frames or performing the self-organizing control in all the video frames.