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1. US6754472 - Method and apparatus for transmitting power and data using the human body

Office
United States of America
Application Number 09559746
Application Date 27.04.2000
Publication Number 6754472
Publication Date 22.06.2004
Grant Number 6754472
Grant Date 22.06.2004
Publication Kind B1
IPC
H04Q 7/20
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
QSELECTING
7Selecting arrangements to which subscribers are connected via radio links or inductive links
20in which the radio or inductive links are two-way links, e.g. mobile radio systems
H04Q 9/04
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
QSELECTING
9Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom
04Arrangements for synchronous operation
CPC
H04Q 9/04
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
QSELECTING
9Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom
04Arrangements for synchronous operation
H04B 13/005
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
13Transmission systems characterised by the medium used for transmission, not provided for in groups H04B3/00 - H04B11/00
005Transmission systems in which the medium consists of the human body
Applicants Microsoft Corporation
Inventors Williams, Lyndsay
Vablais, William
Bathiche, Steven N.
Agents Amin &Turocy, LLP
Priority Data 09559746 27.04.2000 US
Title
(EN) Method and apparatus for transmitting power and data using the human body
Abstract
(EN)

Methods and apparatus for distributing power and data to devices coupled to the human body are described. The human body is used as a conductive medium, e.g., a bus, over which power and/or data is distributed. Power is distributed by coupling a power source to the human body via a first set of electrodes. One or more devise to be powered, e.g., peripheral devices, are also coupled to the human body via additional sets of electrodes. The devices may be, e.g., a speaker, display, watch, keyboard, etc. A pulsed DC signal or AC signal may be used as the power source. By using multiple power supply signals of differing frequencies, different devices can be selectively powered. Digital data and/or other information signals, e.g., audio signals, can be modulated on the power signal using frequency and/or amplitude modulation techniques.


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