Two-dimensional finite impulse response filters

Details Two-dimensional finite impulse response filters Two-dimensional finite impulse response filters

H - Electricity

03

H

328/0.7

H03H 17/02 (2006.01)

Patent

CA 1265589

ABSTRACT OF THE DISCLOSURE A two-dimensional finite impulse response (FIR) filter comprises a demultiplexer for demultiplexing an input data signal comprising adjacent digital words into p (e.g. 2) slower data signals each having a slower rate equal to 1/p (e.g. ?) of the data rate of the input signal and each comprising every pth (e.g. every alternate) word of the input signal. The slower data signals are passed to p (e.g. 2) filter portions each comprising a horizontal FIR filter and a vertical FIR filter. The horizontal filters are each connected to receive all of the slower data signals and all of them are operative simultaneously to effect horizontal filtration by periodically processing sets of adjacent words of the input signal, the sets of adjacent words being processed at any one time by the respective horizontal filters being offset with respect to one another by one word. A multiplexer receives output signals of the filter portions to form a filtered output data signal having a data rate equal to that of the input data signal.

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