Enhanced means of processing signals used to interpret the condi

Details Enhanced means of processing signals used to interpret the condi Enhanced means of processing signals used to interpret the condi

1994-08-31

1995-12-05

Swann, Glen

Communications: electrical

Condition responsive indicating system

Specific condition

381 56, G08B 2100

Patent

active

054733154

ABSTRACT:
A method of processing electrical signals which span a large dynamic range in order to enable the signal to be processed in its entirety without the need for any alteration to the signal gain or signal attenuation, comprises splitting of the signal along two or more paths each having a different amount of amplification or attenuation, the passing of each of these two or more different signals into one of two or more smaller dynamic range circuits which produce a logarithmically scaled representation of the average magnitude of the signal level at its input and the summation of the logarithmic outputs of the two or more smaller dynamic range circuits to produce a resultant logarithmically scaled signal representative of the average magnitude of the input signal over a very large dynamic range. The invention also includes apparatus for carrying out the above defined method.

REFERENCES:
patent: 4366544 (1982-12-01), Shima et al.
patent: 4988979 (1991-01-01), Sasaki et al.

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