Stephen Bradley Robinson

US Patent:

49778960, Dec 18, 1990

Filed:

May 26, 1989

Appl. No.:

7/359640

Inventors:

Stephen E. Robinson - San Diego CA
William C. Black - Del Mar CA

Assignee:

Biomagnetic Technologies, Inc. - San Diego CA

International Classification:

A61B 505

US Classification:

128653R

Abstract:

Signals produced by brain activity are measured by each sensor of an array of magnetic and/or electrical sensors external to but proximate to the head (or other portion of the body) of a subject. The measurements obtained simultaneously from all of the sensors are combined in a manner to permit selective measurement of the electrical activity from a specified location within the body, or alternatively, to permit the location in the body producing a particular type of response to be identified. The instantaneous measurement of each sensor is scaled by a weighting coefficient for that sensor, and the products added over all of the sensors. The weighting coefficients are calculated from a mathematical model of the brain that includes information on the shape of the potential source, the extent or type of source activity, the electrical and magnetic properties of the media, and the locations and orientations of the sources and the sensors.

US Patent:

52693252, Dec 14, 1993

Filed:

Feb 22, 1993

Appl. No.:

8/020175

Inventors:

Stephen E. Robinson - San Diego CA
William C. Black - Del Mar CA

Assignee:

Biomagnetic Technologies, Inc. - San Diego CA

International Classification:

A61B 505

US Classification:

1286531

Abstract:

Signals produced by brain activity are measured by each sensor of an array of magnetic and/or electrical sensors external to but proximate to the head (or other portion of the body) of a subject. The measurements obtained simultaneously from all of the sensors are combined in a manner to permit selective measurement of the electrical activity from a specified location within the body, or alternatively, to permit the location in the body producing a particular type of response to be identified. The instantaneous measurement of each sensor is scaled by a weighting coefficient for that sensor, and the products added over all of the sensors. The weighting coefficients are calculated from the covariance matrix of the measurements made by the array of sensors.

US Patent:

50161288, May 14, 1991

Filed:

Apr 27, 1988

Appl. No.:

7/187017

Inventors:

Mark S. DiIorio - San Diego CA
Stephen E. Robinson - San Diego CA
Duane B. Crum - San Diego CA
Douglas N. Paulson - Del Mar CA
D. Scott Buchanan - San Diego CA
James R. Marsden - San Diego CA

Assignee:

Biomagnetic Technologies, Inc. - San Diego CA

International Classification:

G11B 5012

US Classification:

360 9701

Abstract:

An information storage device includes a magnetic recording medium, preferably supported upon a rotating disk, an electromagnetic writing device that writes magnetic patterns into the recording medium, and a superconducting quantum interference device (SQUID) that reads the magnetic patterns in the recording medium, the writing device and the SQUID preferably being mounted upon a read/write head. The SQUID as operated in its superconducting state is a highly sensitive and directional detector of the magnetic state of the recording medium, permitting it to be spaced relatively distantly from the recording medium yet read the state of small areas of the medium. Use of high temperature superconductors in the SQUID permits practical construction of the information storage device. The read/write head may support a plurality of write devices, and an array of SQUIDs can be utilized so that little or no relative movement of the read/write head is required to read and write from all tracks of the disk.