Abstract: A magnetic field sensor is employed to determine a rotational velocity of an element by sensing frequency variations in a magnetic flux during rotation of the element. The magnetic field sensor includes a sensor face provided with obstacles, such as a series of spaced, substantially parallel grooves arranged perpendicular to a direction in which contamination tends to move across the face during operation of the sensor. The obstacles inhibit movement of contamination across the face such that the contamination does not cause false variations in the magnetic flux which would degrade sensor signals.

Abstract: A set of instructions stored on at least one computer readable medium for running on a computer system. The set of instructions includes instructions for identifying line segments of a roof that is preferably displayed within a geo-referenced image, instructions for determining three-dimensional information of the line segments including position, orientation and length of the line segments preferably utilizing the geo-referenced image, and instructions for classifying, automatically, at least one of the line segments as one of a plurality of predefined roof elements utilizing at least one of the relative position and orientation of the line segments.

Abstract: A coupler apparatus for releasably securing an object to a support member, is described. The mounting apparatus includes a connector joined to the object and having a tapered plug with a slot that extends inward from an outer wall of the plug. The apparatus further includes a base with an internal cavity extending between opposed side walls of the base. The base may be integral with the support member and has an aperture with an internal wall arrangement including an orifice wherein the aperture is dimensioned for reception of the plug. A keeper is slidable positioned within the internal cavity and has a finger that extends though the orifice and into the slot to retain the plug within the aperture.

Abstract: A method and apparatus to route information over a network is described.

Abstract: A method and apparatus to route information over a network is described.

Abstract: The invention provides a coupler apparatus for releasably securing a object to a support member. The mounting apparatus includes a connector joined to the object and having a tapered plug with a slot that extends inward from an outer wall of the plug. The apparatus further includes a base with an internal cavity extending between opposed side walls of the base. The base may be integral with the support member and has an aperture with an internal wall arrangement including an orifice wherein the aperture is dimensioned for reception of the plug. A keeper is slidably positioned within the internal cavity and has a finger that extends through the orifice and into the slot to retain the plug within the aperture.

Abstract: The invention provides a mounting apparatus for releasably securing an accessory to a firearm. The mounting apparatus includes a coupler connectable to the accessory and having a tapered plug with a slot that extends inward from an outer wall of the plug. The apparatus further includes a support base with an internal cavity extending between opposed side walls of the base. The support base has an aperture with an internal wall arrangement including an orifice wherein the aperture is dimensioned for reception of the plug. A keeper is slidably positioned within the internal cavity and has a finger that extends through the orifice and into the slot to retain the plug within the aperture.

Abstract: The invention provides a mounting apparatus for releasably securing an accessory to a firearm. The mounting apparatus includes a coupler connectable to the accessory and having a tapered plug with a slot that extends inward from an outer wall of the plug. The apparatus further includes a support base with an internal cavity extending between opposed side walls of the base. The support base has an aperture with an internal wall arrangement including an orifice wherein the aperture is dimensioned for reception of the plug. A keeper is slidably positioned within the internal cavity and has a finger that extends through the orifice and into the slot to retain the plug within the aperture.

Abstract: A database merging apparatus includes a database pair generator that creates a database pair from a first database, a probe set generator that creates a database probe set from a second database and a comparator in communication with the database pair generator and the probe set generator. The comparator determines if the database probe set correlates to the database pair. An identifier is in communication with the comparator to identify a correlation between the database pair and the database probe set so that correlating data from the first database and the second database can be accessed if there is a correlation.

Abstract: The invention provides a system configured to function with medium used for securely storing information. The system is designed to be used by an administrator, and the medium is designed to be used by an end-user. The system creates schemes that are distributed to the end-users. The schemes can be designed with the system to automate log-on processes for secured applications. In addition, the schemes can be designed with the system to automate password changes that are requested by the secured applications.

Abstract: A database merging apparatus includes a database pair generator that creates a database pair from a first database, a probe set generator that creates a database probe set from a second database and a comparator in communication with the database pair generator and the probe set generator. The comparator determines if the database probe set correlates to the database pair. An identifier is in communication with the comparator to identify a correlation between the database pair and the database probe set so that correlating data from the first database and the second database can be accessed if there is a correlation.

Abstract: A method and apparatus to route information over a network is described.