Communications: electrical – Continuously variable indicating – With particular transmitter
Patent
1994-03-17
1995-08-08
Swarthout, Brent
Communications: electrical
Continuously variable indicating
With particular transmitter
34082534, 34082554, 235380, G06K 708, G08C 1700
Patent
active
054403022
ABSTRACT:
An apparatus for contactless data and energy transmission includes a stationary part and a movable part. The stationary part includes coils and an oscillator connected to the coils for contactless power transmission and data transmission to the movable part. The oscillator produces a reference oscillation as well as an information oscillation upon which a phase displacement relative to the reference oscillation is imposed as a function of data to be transmitted. The movable part includes other coils. One of the coils of each of the parts forms a first pair of coils through which the phase-displaced oscillation is supplied and another of the coils of each of the parts forms a second pair of coils through which the reference oscillation is supplied to the movable part. The movable part also includes a demodulator circuit connected to the other coils for receiving transmitted oscillations and recovering the data from the phase displacement. According to one embodiment, only one of the pairs of coils provide power transmission, and data transmission from the movable part to the stationary part is provided by load variation only at the coil of the movable part not being used for power transmission. According to another embodiment, data transmission from the movable part to the stationary part is provided by load variation of only one of the pairs of coils, and power transmission is only provided by the pair of coils not undergoing any load variation caused by the data transmission from the movable part to the stationary part at a given moment.
REFERENCES:
patent: 4549176 (1985-10-01), Kreft
patent: 4697183 (1987-09-01), Jenning et al.
patent: 4749993 (1988-06-01), Szabo et al.
patent: 4796028 (1989-01-01), Mackenthun et al.
patent: 4818855 (1989-04-01), Mongeon et al.
patent: 4857893 (1989-08-01), Carroll
patent: 4928087 (1990-05-01), Kreft et al.
Publication, Patent Abstracts of Japan, vol. 12, No. 192 (P-712)[3039], Jun. 4, 1988; JP-A-62-297988, Dec. 25,1987 (Abstract only); English.
Publication Laboratory Report No. HTV 8902/HDP 8902, entitled "C2 Card", Rainer Imjela of Philips Components, dated Oct. 11, 1989, VALVO Philips Bauelemente, Jan. 1990.
Irmer Heimbert-Ulrich
Scheckel Bruno
Greenberg Laurence A.
Hill Andrew M.
Lerner Herbert L.
Siemens Aktiengesellschaft
Swarthout Brent
LandOfFree
Apparatus for contactless data and energy transmission and syste does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus for contactless data and energy transmission and syste, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for contactless data and energy transmission and syste will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-974583