Filter circuit

Details Filter circuit Filter circuit

2011-03-01

2011-03-01

Mai, Tan V (Department: 2193)

Electrical computers: arithmetic processing and calculating

Electrical digital calculating computer

Particular function performed

C708S316000

Reexamination Certificate

active

07899858

ABSTRACT:
The present invention provides a filter circuit which can eliminate single noise effectively and is relatively simple in circuit configuration. First and second absolute values of differences between one-clock-preceding output data and both of one-clock-preceding input data and two-clock-preceding input data are respectively calculated by subtracters. When the first absolute value<the second absolute value, a selector selects one-clock-preceding input data as the present output data. When the first absolute value≧the second absolute value, the selector selects two-clock-preceding input data as the present output data.

REFERENCES:
patent: 4890162 (1989-12-01), McNeely et al.
patent: 5777911 (1998-07-01), Sherry et al.
patent: 07-311082 (1995-11-01), None

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