发明名称 SIGNAL PROCESSING SYSTEM
摘要 A signal processing system for digital signals comprises a quantizer with a non-linear characteristic curve. When sections of a digital signal are coded in different ways, e.g., by interframe and interframe coding, the quality of the decoded signal may vary from one section to another. The system disclosed makes it possible to obtain a decoded signal of uniform quality as well as search mode. This is achieved by using a quantizer characteristic curve for the signal section consisting of a linear portion which is shifted into the field of the characteristic curve in function of the data rate of a preceding signal section, followed by a steadily increasing portion, and by using a virtual buffer memory. The system is suitable for digital signal processing in data-reducing coding.
申请公布号 AU5855790(A) 申请公布日期 1991.01.17
申请号 AU19900058557 申请日期 1990.06.22
申请人 DEUTSCHE THOMSON-BRANDT GMBH 发明人 CARSTEN HERPEL;DIETMAR HEPPER
分类号 G06T9/00;H04N5/14;H04N5/926;H04N7/26;H04N7/30;H04N7/32;H04N7/50 主分类号 G06T9/00
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