METHOD OF CONTROLLING ENCODING RATE OF VIDEO ENCODER, METHOD OF TRANSMITTING VIDEO DATA, ENCODING RATE CONTROLLER FOR VIDEO ENCODER, AND VIDEO DATA TRANSMISSION SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide an encoding rate controller for a video encoder which enhances image quality by real time variable bit-rate control, video data transmission system provided with the same, and its method.;SOLUTION: In the encoding rate controller and video data transmission system, bits are allocated to a current picture on the basis of previous encoding results without defining a relation between an encoding rate and the distortion. When features of the current picture are different from those of the previous pictures, the limited number of bits is not forced and a quantizer scale is set adaptively to various features of the current picture without using an additional number of bits corresponding to the variation of the quantizer scale, so that it is possible to improve the picture quality of video data when decoding the video data to be displayed on a monitor by using such real time variable bit-rate control.;COPYRIGHT: (C)2005,JPO&NCIPI