A human-portable utility locator system for locating and tracing a buried utility line characterized by an electromagnetic field emission. The locator may include a horizontal spaced sensor pair for detecting the horizontal field asymmetry of the emitted field in one or more independent frequency bands, which is employed to assist in determining an accurate "virtual depth" measurement for producing detection events. An event detector may be disposed to detect events corresponding to extremum in ...

A lamp includes a housing, a heat dissipating plate, a circuit unit, and a heat distributing unit. The housing includes a housing body surrounding an axis and having an opening. The heat dissipating plate is disposed in the housing body and has a peripheral portion contacting the housing body. The circuit unit is disposed in the housing body, and includes a base plate coupled to the heat dissipating plate, and a light emitting unit mounted to the base plate opposite to the heat dissipating plate...

A method of providing a protocol for rekeying between two stations is disclosed. The method can include providing a first set of messages for computing a new key and reserving an auxiliary storage area for the new key. The first set of messages comprises an enable exchange. The method also includes providing a second set of messages to obsolete an old key and switch to the new key. The second set of messages comprises a transition exchange. In one embodiment, the protocol includes rekeying betwe...

A system includes a multifunctional peripheral (MFP) and a computer connected to the MFP via a communication link. The MFP includes a scanner for use by walk-up user to scan a page. The computer provides a user interface that enables a user to request a document be printed and then scanned on the MFP.

A caster assembly is provided for supporting an object. The caster assembly includes a generally triangular landing for receiving the object thereon. The landing lies in a first plane. The caster assembly also includes first and second legs that lie in a second plane generally parallel to the first plane. The first and second legs are vertically spaced from the landing and each leg includes an upper surface and a lower surface. A first plurality of wheel assemblies are interconnected to the lowe...

The present invention allows a terminating telephony switch to detect whether or not a caller associated with an incoming call is associated with multimedia capability. The terminating telephony switch will monitor a call setup message, such as an Integrated Services User Protocol Initial Address Message, to determine whether or not there is multimedia capability information indicative of the caller's telephony terminal being associated with another media device, or including media capability su...

Ethernet capability of a device under test is tested. A diagnostic tool is connected to the device under test. Menus displayed by the diagnostic tool are used to select an Ethernet test. The diagnostic tool discovers network settings of the device under test. Then the diagnostic tool configures an Ethernet connection between the diagnostic tool and the device under test.

A robot having an imaging capability includes: an imaging device, and at least one actuator separate from the imaging device for moving at least a portion of the robot. The at least one actuator is controllable in response to a control command, the imaging device being responsive to the control command to modify characteristics of image data produced.

A memory controller monitors requests from one or more computer subsystems and issues one or more prefetch commands if the memory controller detects that the memory system is idle after a period of activity, or if a prefetch buffer read hit occurs. In some embodiments, results of a prefetching operations are stored in a prefetch buffer configured to provide an automatic aging mechanism, which evicts prefetched data from time to time. The prefetched data in the prefetch buffer is released and sen...

A cellular telephone is used as a remote control device to control operations on the users nonportable computer which is remote location to the cellular telephone. The user can carry out various operations on the cellular telephone which cause the remote computer to take some additional action.