Receiving device for sampling data bits at a preferred time

Details Receiving device for sampling data bits at a preferred time Receiving device for sampling data bits at a preferred time

1995-10-12

1997-11-04

Chin, Stephen

Pulse or digital communications

Receivers

Particular pulse demodulator or detector

341 53, 375316, 375355, H04L 700

Patent

active

056848382

ABSTRACT:
In a receiving device, when a communication signal, which changes between low level and high level, is received via a filter circuit, an occurrence of an edge of the filtered received signal is monitored. Upon detection of the edge, a type of the edge, that is, whether the edge is a leading or trailing edge, is determined. Depending on the type of the edge, one of preset times prestored corresponding to types of the edges, is selected and starts to be measured. When the selected preset time elapses, the filtered received signal is sampled. With this arrangement, even when a filtering time of the filter circuit differs depending on a type of the edge of the communication signal, a constant sampling timing relative to the communication signal can be achieved irrespective of whether the detected edge is the leading or trailing edge.

REFERENCES:
patent: 4543530 (1985-09-01), Kovach
patent: 5235596 (1993-08-01), Sporer
patent: 5315299 (1994-05-01), Matsumoto
patent: 5438289 (1995-08-01), Kan et al.
patent: 5459751 (1995-10-01), Okamoto

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