Digital filter circuit

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专利汇可以提供Digital filter circuit专利检索,专利查询,专利分析的服务。并且PURPOSE: To decrease a margin bit with a length of an operating word and to reduce the recovery time from an error by inserting a clipping circuit in feedback loop of a filter circuit in a filter circuit of the IIR (infinite impulse response) type.
CONSTITUTION: An output of an IIR digital filter 1 used for a decoder side of a bit rate reduction system is fed back to an adder 2 at the input side via a forecast device 3. A clippig circuit 4 is inserted and connected in the feedback loop. It is preferrable to insert and connect the circuit 4 at a position just after the adder 2 where overflow takes place. Thus, the circuit 4 applies the clipping processing as to the filter output and also the clipping processing to a supply data to the forecast device 3 and it is possible to reduce a high-order margin bit of the length of the operating word at the forecast device 3.
COPYRIGHT: (C)1987,JPO&Japio,下面是Digital filter circuit专利的具体信息内容。

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