Method and apparatus for reception of signals from several trans

Multiplex communications – Pulse width modulation

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370213, 370205, 375238, 375239, 348734, 332109, 332112, H04J 700, H04J 900, H04N 544

Patent

active

058703802

ABSTRACT:
The disclosure relates to a method of reception of signals from at least two transmitters (RCi), wherein for each transmitter the data ("0", "1") are represented by the time interval (T0i, T1i) between two consecutive pulses transmitted by this transmitter, said time intervals and the pulse widths (Tpi) being characteristic of each transmitter, and wherein said method includes the following steps: reception of a resultant signal that is the sum of the signals from by said transmitters; determination of the parameters of said resultant signal, these parameters including the width and spacing of the pulses; analysis of said parameters and assignment of a data item to one of said transmitters. The invention also concerns a receiver device, a remote controller, and a system of reception. The invention is applicable notably in the field of television and video.

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patent: 4357634 (1982-11-01), Chung
patent: 4980884 (1990-12-01), Chang
patent: 5504279 (1996-04-01), Sizer, II
patent: 5724357 (1998-03-01), Derks
Patent Abstracts of Japan vol. 009 No. 208 (E-338), 24 Apr. 1985 & JP-A-60 072499 (Sony KK) 24 Apr. 1985.
Elektor Electronics, vol. 17, No. 192, Sep. 1, 1991 London, GB pp. 34-38, "Remote Control ICS MV500 and MV601 Plessey Semiconductors".
Copy of Search Report.
Motorola's "Clone Clear" product literature, Aug. 14, 1994.
Corsair Communications "PhonePrint (tm)", pp: 1-26 (numbered by examiner) original pp. 4,10, and 16 (numbered by Corsair) are missing, May 1995.

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