Multiplex communications – Pathfinding or routing – Switching a message which includes an address header
Patent
1994-06-24
1998-03-03
Kizou, Hassan
Multiplex communications
Pathfinding or routing
Switching a message which includes an address header
370312, 370349, 455 2, 455 542, 34082554, 375238, 341182, 434351, H04J 326, H03K 708
Patent
active
057243573
ABSTRACT:
A wireless remote response system includes a base unit which retrieves user-entered responses from a plurality of remote response units, each of which is provided to a user. The base unit transmits a base data package over a wireless communication link to the plurality of remote response units, which decode the base packet and load into memory a portion of the decoded base package at each response unit. Each response unit examines the characters loaded into the memory and determines any character in the portion of the decoded base package that pertains to that particular response unit. Each remote response unit then processes any character that pertains to that particular response unit. Each bit of data exchanged between the base unit and the response unit is encoded as a particular time interval for at least one cycle of a periodic waveform by varying the time interval either between successive rising edges or between successive falling edges of the periodic waveform. Decoding is carried out by measuring the time intervals between rising edges or between falling edges of successive waveforms. It is then determined whether each measured time interval falls within one of at least two distinct non-overlapping time ranges in order to determine a value of each bit.
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Fleetwood Group, Inc.
Kizou Hassan
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