Communications: electrical – Systems – Selsyn type
Reexamination Certificate
2000-08-04
2002-12-10
Hofsass, Jeffery (Department: 2632)
Communications: electrical
Systems
Selsyn type
C340S315000, C340S313000, C340S505000, C340S870030, C340S870110
Reexamination Certificate
active
06492897
ABSTRACT:
BACKGROUND—DESCRIPTION OF PRIOR ART
Class: 340/310.01; 455/402; 375; 342; 370/213; 315/291
(no patents reference this one)
Patent
Issued
Inventor(s)
Applicant(s)
Title
U.S. Pat. No. 223898
January 1880
Thomas Edison
None
Electric Lamp
U.S. Pat. No. 6016038
January 2000
Mueller; George A.
Color Kinetics, Inc.
Multi-colored LED lighting method
et. al.
and apparatus
U.S. Pat. No. 2032360
U.S. Pat. No. 2264395
U.S. Pat. No. 2264396
U.S. Pat. No. 4471399
September 1984
Udren
Westinghouse
Power-line baseband
Electronic Corporation
communication system
U.S. Pat. No. 5559377
September 1996
Lee
None
Data Communication using power
lines
U.S. Pat. No. 5982276
November 1999
Stewart; William L.
Media Fusion
Magnetic field based power
transmission line communication
method and system
U.S. Pat. No. 4471399
September 1984
Udren
Westinghouse Electric
Power-line baseband
Corp.
communication system
U.S. Pat. No. 5554968
September 1996
Lee; Raymond
None
Data Communication using power
lines
U.S. Pat. No. 5670931
September 1997
Besser et. al.
Baker Hughes
Method and apparatus for
Incorporated
transmitting data over a power
cable utilizing a magnetically
saturable core reactor.
U.S. Pat. No. 5684450
November 1997
Brown; Paul
Norweb PLC
Electricity distribution and/or
Anthony
power transmission network and
filter for telecommunication over
power lines
U.S. Pat. No. 4462113
July 1984
Iwata; Keisuke
Iwata Electric
Cordless transmitting and receiving
Company, Ltd.
apparatus
U.S. Pat. No. 6040759
April 2000
Sanderson; Lelon
None
Communication system for
W.
providing broadband data services
using a high-voltage cable of a
power system
U.S. Pat. No. 5952914
September 1999
Wynn; Woodson D.
AT&T Corp.
Power line communications system
U.S. Pat. No. 6031862
February 2000
Fullerton; Larry W.
Time Domain
Ultrawide-band communication
Corporation
system and method
U.S. Pat. No. 5969663
October 1999
Fullerton; Larry W.
Time Domain
Time domain radio transmission
Corporation
system
U.S. Pat. No. 6085091
July 2000
Yoo; Dong Hwa et.
Electronics and
Method for controlling hand off of
al.
Telecom. Research Inst.
mobile terminal in code division
multiple access mobile
communication system
U.S. Pat. No. 5832364
November 1998
Gustafson; Warren
AirNet Comm. Corp
Distributing wireless system carrier
H.
system within a building using
existing power line wiring
U.S. Pat. No. 6047199
April 2000
DeMarco; Anthony
Bellsouth Intellectual
Systems and methods for
T.
Property Corporation
transmitting mobile radio signals
U.S. Pat. No. 5949327
September 1999
Brown; Paul A.
Norweb PLC
Coupling of telecommunication
signals to a balanced power
distribution network
U.S. Pat. No. 5937342
August 1999
Kline; Paul A.
Dynamic
Wireless local distribution system
Telecommunications
using standard power lines
U.S. Pat. No. 5864284
January 1999
Sanderson; Lelon
None
Apparatus for coupling radio-
W.
frequency signals to and from a
cable of a power distribution
network
U.S. Pat. No. 6035199
March 2000
Barnett; Charles A.
Hughes Electronics
Method and apparatus for
Corporation
performing a handoff in a wireless
communication system
U.S. Pat. No. 6035197
March 2000
Raberman; Michael
Cellco Partnership
Method and system for providing a
handoff from a CDMA cellular
telephone system
U.S. Pat. No. 5815538
September 1998
Grell; Conrad et. al.
Omniplex, Inc.
Method and apparatus for
determining location of a
subscriber device in a wireless
cellular communications system
U.S. Pat. No. 5802173
Sept. 1, 1998
Hamilton-Piercy;
Rogers Cable System
Radiotelephony System
Nicholas Francis et.
Limited
al.
U.S. Pat. No. 5809395
September 1998
Hamilton-Piercy;
Rogers Cable System
Remote antenna driver for a radio
Nicholas Francis et.
Limited
telephone system
al.
WO9957878
November 1999
Stewart; William L.
Media Fusion Corp
Magnetic field based power
transmission line communication
method and system
WO9743740
November 1997
Devereaux; Kevin
Micron
Radio Frequency Data
et. al.
Communications
Communication Device
Thomas Edison was the inventor of the electric light bulb which has influenced in one way or another every human being in the world. U.S. Pat. No. 223,898 is a basic building block of many inventions considering the electric light bulb as prior art. The electric light bulb installs quickly and is cost effective compared to the wax candle or oil-burning lamp. However, Thomas Edison never envisioned that his invention would one day help third world countries and rural areas obtain the necessary technology to compete with urban centers. The light bulb was used as a way to communicate information by turning on and off the bulb in a pattern. However, the light bulb was never operated as a wireless communication base for sending and receiving large bandwidth data. Moreover, the light bulb was never envisioned to interface with a power communications system. To date, however, no system has been proposed which makes effective use of the extensive and growing bi-directional networks of power transmission lines already existing or installed, particularly in urban and suburban areas, for wireless data communication purposes.
As stated in U.S. Pat. No 5,982,276, the use of power transmission lines as a communication media is well known in the art with some of the earliest work dating back to the 1930's in an effort to provide telephone communication to rural areas which had not yet been served by telephone lines, such as the type of prior art systems described in U.S. Pat. Nos. 2,032,360; 2,264,395; and 2,264,396. These systems, which employed carrier waves superposed on the electrical component of the electromagnetic radiation carried over the phone transmission line, were strictly analog in nature and were not particularly successful because of the inherent limitations of the analog bandwidth, signal attenuation, electromagnetic noise and the inability to handle more than one call at a time. The need to transmit information through the power transformers also proved an impediment to a successful communication system. Attempts have also been made to overcome these problems through the use of digital signal transmission instead of an analog carrier wave, but still utilizing the electrical component of the electromagnetic radiation carried over the power transmission line, such as disclosed in U.S. Pat. Nos. 6,040,759; 5,684,450; 5,670,931; 5,952,914; 5,949,327; 5,554,968; 5,559,377; and 4,471,399, as well as the use of digital packets to try to overcome the noise problem, but these attempts have also been unsatisfactory and too costly.
U.S. Pat No. 5,982,276 overcomes the problems of bandwidth, signal attenuation, electromagnetic noise, power transformer impediment, and the inability to handle more than one call at a time by wire transmission of data using a magnetic field component for enabling voice and data communication over power lines. This invention allows subscribers to send and receive data at an unprecedented bandwidth of 2.5 Gigabytes per second. The disadvantage of this patent is that the only reference to wireless communication is by the interface to a conventional microwave tower that interfaces to a standard power transmission line through a magnetic based power communication system. This reference allows wireless subscribers to the power communication network to interface with other conventional telephone wireless users not connected to the power communication network. The use of a microwave tower is expensive, is non-upgradeable, needs professional installation, needs an extensive installation period, is bandwidth limited, is frequency limited, is coverage area limited, works independently of other microwave towers, needs special construction governmental permits, has constant output power, has high signal radiation, is environmentally unfriendly, and has a large visual profile.
U.S. Pat. Nos. 6,031,862 and 5,969,663 describe an impulse radio communication system using one or more sub-carriers to communicate information from an impulse radio transmitter to an impulse radio receiver. The impulse radio communication system is an ultrawide-band time domain sy
Hofsass Jeffery
Nguyen Hung T
LandOfFree
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