Method and apparatus of pulse position demodulation

Details Method and apparatus of pulse position demodulation Method and apparatus of pulse position demodulation

1998-04-04

1999-11-02

Grimm, Siegfried H.

Demodulators

Pulse or interrupted continuous wave demodulator

Pulse position, frequency, phase or spacing demodulator

329311, 375239, 375340, H03K 904, H03K 910

Patent

active

059778229

ABSTRACT:
A method and apparatus for pulse position demodulation begins by receiving a pulse that is positioned approximately at one of a plurality of time intervals within a time chip, where the pulse has a pulse width that is greater than each of the plurality of time intervals. The decoding process then continues by determining the time interval in which a transition edge of the pulse lies. From the particular time interval, a set of bits is determined.

REFERENCES:
patent: 5633742 (1997-05-01), Shipley
patent: 5640160 (1997-06-01), Miwa
patent: 5691665 (1997-11-01), Ohtani
Joe Tajnai et al, Infrared Data Association Serial Infrared Physical Layer Link Specification, Version 1.1e, Oct. 17, 1995, pp. i-iv, 1-33.
Iain Millar et al, "The IrDA Standards for High-Speed Infrared Communications", Hewlett-Packard Journal, Feb., 1998, pp. 10-25.
Mark B. Ritter et al, "Circuit and System Challenges in IR Wireless Communication", IEEE International Solid-State Circuits Conference, Digest of Technical Papers, vol. 39, Feb. 10, 1996, pp. 398-399.

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