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US 2006/0219122 A1Published application
Dynamic baselining in current modulation-based communication
AssigneeSpecial Devices, Inc.
InventorsGimtong Teowee, David Jennings
Life of this patent
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Abstract
Dynamic baselining of current modulation-based talkback from a slave device to a master device in a system such as an electronic blasting system, wherein the dynamic baselining enhances communication integrity under conditions of environmental noise and the like. With a data packet of appreciable length, the dynamic baselining is preferably performed repeatedly on the bytes or words within the packet.
Claims20
A method of dynamically baselining current modulation-based talkback comprising the following steps:
- a) establishing an electrically-connected system that includes a master device, a bus having a high voltage and a low voltage, and at least one slave device;
- b) causing a slave device to communicate to said master device using current modulation-based talkback while said master device holds said bus at said low voltage;
- c) causing said master device to periodically measure a baseline level of the talkback current;
- and,
- d) causing said master device to thereafter receive talkback compensated according to said measured baseline level of talkback current.
2 more elements
Dependencies are inferred from the claim text.