Receiver arrangement

Details Receiver arrangement Receiver arrangement

1995-03-28

1997-08-26

Chin, Stephen

Pulse or digital communications

Pulse position, frequency, or spacing modulation

375256, 375310, 375328, 3408554, 34087019, 34082559, 34082569, 329313, 327 90, 327101, H03K 704

Patent

active

056617542

ABSTRACT:
An infrared remote-control receiver employs at its front end a gyrator-configured transistor operating as a current-to-voltage converter, but derives its data information from a negative-going gyrator output pulse in preference to the more conventionally used positive-going pulse. This negative-going pulse may be wider than the positive-going pulse and reduces the bandwidth demand on subsequent processing circuitry. This enables low-bandwidth, low-current hardware to be used which makes the receiver ideal for use in battery-operated systems. Also, the negative-going pulse is easier to detect, as it directly follows a disturbance known to be in the opposite direction. The result is an increased receiver sensitivity.

REFERENCES:
patent: 3729633 (1973-04-01), Eros et al.
patent: 3916326 (1975-10-01), Woyton
patent: 4153848 (1979-05-01), Miyazaki
patent: 4206316 (1980-06-01), Burnsweig et al.
patent: 4943736 (1990-07-01), Kihara et al.
patent: 5539779 (1996-07-01), Nagahori

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