Patent ID: 6959041
Filing Date: 2005-10-25
Classification: H04N

Abstract:
1. A picture encoding system conversion device comprising: a decoder receiving picture codes, compressed in information volume, from a reception side transmission channel via an input buffer and expanding the received picture codes to output expanded picture codes; an encoder compressing the picture codes, decoded by said decoder, in information volume, to generate picture codes to output generated picture codes from an output buffer to a sending side transmission channel; and a transcoder controller controlling said encoder; wherein said transcoder controller includes an input buffer monitor monitoring said input buffer of said decoder; an output buffer monitor monitoring said output buffer of said encoder; and a quantization step controller modifying a quantization step in compression processing of said encoder based on the information from said input buffer monitor and said output buffer monitor, wherein said modification of said quantization step is based on an input buffer storage volume measured at the input buffer.