APPARATUS FOR TRANSFERRING DATA TO AND FROM A MOVING DEVICE

Title:

APPARATUS FOR TRANSFERRING DATA TO AND FROM A MOVING DEVICE

Document Type and Number:

WIPO Patent Application WO/1995/018472

Kind Code:

A1

Abstract:

An apparatus is provided for transferring data between a first device (34) and a second device (44), the second device being adapted to rotate with respect to the first device. The first device includes a first antenna assembly and a first transceiver assembly (37) for transmitting and receiving signals via the first antenna assembly. The second device includes a second antenna assembly and a second transceiver assembly (41) for transmitting and receiving signals via the second antenna assembly. The rotating antenna is mounted circumferentially about the second device such that the stationary antenna is in capacitive coupling relationship substantially through an entire revolution of the second device. The apparatus is particularly useful in a CT scanner where data is transmitted from the first device to the second device via a single channel, and data is transmitted from the second device to the first device via two time-multiplexed channels so as to provide high speed data transfer from second device to the first device at twice the rate of data transfer from the first device to the second device. The invention includes a variety of features for significantly reducing error rates, and particularly for reducing error due to cross talk between channels.

Inventors:

GORDON BERNARD M
JOHNSON RICHARD B
IZRAILIT IOSEF
WEEDON HANS
ABRAHAM DOUGLAS

Application Number:

PCT/US1994/014680

Publication Date:

July 06, 1995

Filing Date:

December 20, 1994

Export Citation:

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Assignee:

ANALOGIC CORP (US)

International Classes:

H01Q1/38; H01Q3/02; A61B6/03; A61B6/00; (IPC1-7): H01Q1/38; H01Q11/08; H04J4/00

Foreign References:

DE8429531U1	1986-04-10
US4101833A	1978-07-18
US5132966A	1992-07-21
US4596022A	1986-06-17

Other References: