Electrical computers: arithmetic processing and calculating – Electrical digital calculating computer – Particular function performed
Patent
1998-06-12
2000-12-12
Malzahn, David H.
Electrical computers: arithmetic processing and calculating
Electrical digital calculating computer
Particular function performed
708208, 708444, G06F 500, G06F 1710
Patent
active
061611182
ABSTRACT:
A comb filter is provided for achieving substantial attenuation of aliasing or imaging bans of a signal to be filtered. The comb filter can perform decimation or interpolation, depending upon its application. Integration can include an integration term with adjustable voltage accumulation at a particular sample point in time. The accumulation factor can be an integer or fractional number and is introduced at a sample count value L within each of M number of samples formed by the rate change switch within the comb filter. The amount of gain being introduced can possibly vary depending on the number of accumulation cycles programmed within configuration registers of the digital signal processor which carries out the comb filter functions. The programmable accumulator avoids having to implement a multiplication operation and the complexities associated therewith.
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Chu et al., "Multirate Filter Designs Using Comb Filters," IEEE Transactions on Circuits and Systems, vol. CAS-31, No. 11, Nov. 1984, pp. 405-416.
Daffer Kevin L.
Malzahn David H.
Oak Technology, Inc.
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