Boots – shoes – and leggings
Patent
1989-09-28
1991-01-01
Shaw, Dale M.
Boots, shoes, and leggings
307452, 307594, 307443, G06F 1531, H03K 1900, H03K 1700
Patent
active
049823531
ABSTRACT:
The plural-phase clocking signal used in a subsampling time-domain digital filter is partially blanked to generate a sparse clocking signal for a clocked data latch that decimates the output signal from the digital filter, to supply it at a subsampling rate as compared to the sampling rate of input signal to the filter. The blanking signal is generated from a counter that counts occurrences of pulses in the plural-phase clocking signal, which counter comprises a ripple-carry adder and another clocked data latch arranged to accumulate successive unit values. This procedure guarantees correct timing of clocking signal for the output latch vis-a-vis the plural-phase clocking signal used in the preceding time-domain digital filter despite the time taken for carry ripplethrough in the counter adder. Digital hardware is conserved by blanking only one phase of the plural-phase clocking signals.
REFERENCES:
patent: 4395774 (1983-07-01), Rapp
patent: 4495426 (1985-01-01), Leach
patent: 4768018 (1988-08-01), Noujaim
patent: 4799040 (1989-01-01), Yanagi
patent: 4820943 (1989-04-01), Makino et al.
Forman Glenn A.
Jacob Philippe L.
Mallick John A.
Noujaim Sharbel E.
Davis Jr. James C.
General Electric Company
Limberg Allen L.
Nguyen Long T.
Shaw Dale M.
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