公开(公告)号：KR100271235B1

公开(公告)日：2000-11-01

申请号：KR1019980002822

申请日：1998-02-02

Applicant: 전자부품연구원

Inventor： 홍문호 ,  이병렬 ,  홍인화 ,  호요성 ,  이정우

IPC: H04N19/134 ,  H04N19/176

Abstract: PURPOSE: A bit rate control algorithm according to the type of macroblock coding is provided to be capable of minimizing the degradation of image quality in screen shift by reducing the signal loss and transmission bit rate when digital video signals including a lot of information are transmitted through limited channels. CONSTITUTION: First, the number rate of macroblocks coded into an INTRA mode including total macroblocks coded into MB_INTRA type and macroblocks coded into an INTER mode including total macroblocks coded into types except the MB_INTRA is calculated. Then, the calculated number rate of macroblocks is substituted into a predetermined equation for calculating a final quantization variable. Next, more bits are assigned by reducing the final quantization variables of macroblocks coded into the MB_INTRA type in a P frame and a B frame by the calculated rate. Finally, the first to third steps are repeated for total macroblocks of respective frames.

Abstract translation: 目的：提供一种根据宏块编码类型的比特率控制算法，通过减少信号丢失和传输比特率，使包含大量信息的数字视频信号通过 有限的渠道 构成：首先，计算编码为INTRA模式的宏块的编号速率，包括编码为MB_INTRA类型的总宏块和编码为INTER模式的宏块，包括编码为MB_INTRA以外的类型的总宏块。 然后，将计算出的宏块数量代入用于计算最终量化变量的预定方程式。 接下来，通过将编码成P帧和B帧的MB_INTRA类型的宏块的最终量化变量减少计算速率来分配更多位。 最后，对于相应帧的总宏块重复第一至第三步骤。

公开(公告)号：KR1019990068907A

公开(公告)日：1999-09-06

申请号：KR1019980002822

申请日：1998-02-02

Applicant: 전자부품연구원

Inventor： 홍문호 ,  이병렬 ,  홍인화 ,  호요성 ,  이정우

IPC: H04N19/134 ,  H04N19/176