Abstract: Head-mounted display systems with power saving functionality are disclosed. The systems can include a frame configured to be supported on the head of the user. The systems can also include a head-mounted display disposed on the frame, one or more sensors, and processing electronics in communication with the display and the one or more sensors. In some implementations, the processing electronics can be configured to cause the system to reduce power of one or more components in response to at least in part on a determination that the frame is in a certain position (e.g., upside-down or on top of the head of the user). In some implementations, the processing electronics can be configured to cause the system to reduce power of one or more components in response to at least in part on a determination that the frame has been stationary for at least a threshold period of time.

Abstract: A head mounted display system can process images by assessing relative motion between the head mounted display and one or more features in a user's environment. The assessment of relative motion can include determining whether the head mounted display has moved, is moving and/or is expected to move with respect to one or more features in the environment. Additionally or alternatively, the assessment can include determining whether one or more features in the environment have moved, are moving and/or are expected to move relative to the head mounted display. The image processing can further include determining one or more virtual image content locations in the environment that correspond to a location where renderable virtual image content appears to a user when the location appears in the display and comparing the one or more virtual image content locations in the environment with a viewing zone.

Abstract: A wireless network, mobile systems and methods for controlling access to lockers, strollers, wheel chairs and electronic convenience vehicles and other networked devices provided with machine-readable codes that are scanned by mobile phones and computing devices.

Abstract: A frequency modulated output of a digital locked loop (DLL) is implemented with a Johnson Counter outputting a sample clock and a synchronized digital code at a multiple of the sample clock. The digital code drives a digital-to-analog converter to generate a frequency modulated control signal. The control signal is summed with the center frequency control from the digital locked loop digital filter to provide a frequency modulated center frequency control signal to the DLL oscillator.

Abstract: A current-conducting arm for conducting a current from at least one cable supports to an electrode in an electric arc furnace comprising an arm housing having a U-shaped base channel member and a U-shaped top channel member. Both channel members have a first and second wall, with the top channel member being inverted such that the first wall of the top channel member can be joined with the first wall of the base channel member, and the second wall of the top channel member can be joined with the second wall of the base channel member. The arm housing therefore has four annular corners to improve the conduction of current through the arm housing to the electrode. The invention further includes a spring assembly used to provide to aid an electrode holder in clamping the electrode. Moreover, a laser pointer is included for guiding the positioning of the arm housing in the electric arc furnace.

Abstract: A computer system and method provide networked computer users with information about which other users are task proximate to the user, thereby facilitating spontaneous communications regarding task-related, or other, issues. The information about other users is displayed in a user interface window on each computer that presents a visual representation of each user who is task proximate to the user operating the computer. Task proximity to other users may change as the user context switches between applications, and the user interface window is updated accordingly. Task proximity is determined individually by different applications. One exemplary system architecture for providing the information includes a person object representing each user, and storing the visual representation of the user. An encounter window on each computer displays the visual representations. A number of encounter-aware applications may execute on each computer.

Abstract: A computer system and method provide networked computer users with information about which other users are task proximate to the user, thereby facilitating spontaneous communications regarding task-related, or other, issues. The information about other users is displayed in a user interface window on each computer that presents a visual representation of each user who is task proximate to the user operating the computer. Task proximity to other users may change as the user context switches between applications, and the user interface window is updated accordingly. Task proximity is determined individually by different applications. One exemplary system architecture for providing the information includes a person object representing each user, and storing the visual representation of the user. An encounter window on each computer displays the visual representations. A number of encounter-aware applications may execute on each computer.

Abstract: A system and method provides each networked computer user with a user interface displaying visual representations of selected other computer users, generally of those workers in the user's workgroup, and further provides communication mechanisms for efficiently and easily contacting any of the displayed workers. The visual representations of the other users are frequently updated to indicate the activity level of these users. These activity level cues help users predict if the other users are likely to be available for an interaction. The user interface also includes a display portion and mechanism for storing data files and the like so that all workgroup members may accumulate a set data files commonly used by the workgroup, and may transfer files in this manner to other workgroup members. The data files may be stored in association with specific interactive discussion windows, known as chat rooms, or directly in the user interface.

Abstract: A handcart for banquet tables and the like. The handcart has a main support shaft supported on wheels with a handle portion at one end and a transverse cradle like member at the opposite end engageable with a cross leg brace of the table. The handcart may be operated to lift one end of the table with the handcart cradle and then support the table by a collapsible rigid table brace supported by the shaft between the handle portion and the handcart wheels. The table completely supported and balanced upon the handcart may then be moved with all legs off the ground by grasping the end of the table near the handle portion and moving it like a wheelbarrow.