Abstract: A modular sensor and display module comprises an enclosure with a rigid frame and front and back visor lens encapsulating sensors, waveguide optics, and display/projection devices that provide various functions for a typical head-mounted device. A front visor may conceal sensors and other components and may further provide dimming for holographic displays. The modular sensor and display module may include a standard interface for attachment to various fit systems, including, for example, headband, VR headset, glasses temples, helmet, and the like. A further module, such as a rear-attachment module, may be provided that can provide auxiliary compute, storage, and power resources for the modular sensor and display module.

Abstract: A modular sensor and display module comprises an enclosure with a rigid frame and front and back visor lens encapsulating sensors, waveguide optics, and display/projection devices that provide various functions for a typical head-mounted device. A front visor may conceal sensors and other components and may further provide dimming for holographic displays. The modular sensor and display module may include a standard interface for attachment to various fit systems, including, for example, headband, VR headset, glasses temples, helmet, and the like. A further module, such as a rear-attachment module, may be provided that can provide auxiliary compute, storage, and power resources for the modular sensor and display module.

Abstract: Interactive program guide (IPG) data is delivered to a receiver from which a program guide can be retrieved. The IPG data includes schedule-data for each of a plurality of time slots, description-data for each of the plurality of time slots, and non-time-sensitive foundation data.

Abstract: Improvement in perceived user response time for information requests is achieved by preloading information in anticipation of a user request. The preloaded information is stored in a look-ahead cache from which it is presented to a user when it is ultimately requested by the user. If preloaded information is requested by a user, it can be presented almost immediately without the latency of a network retrieval. Techniques for optimizing preloading are disclosed. Flexibility in preloading is achieved by organizing information identifiers into a data structure, such as a stack, for preload retrieval, and by limiting the types of information which can be preloaded and by specifying the order in which information types are accessed. Preloading can be implemented on a wide variety of platforms and can be incorporated in a variety of software processes.

Abstract: A dual signature perimeter detection system utilizing an elongated solenoid ype transducer having a ferromagnetic core as a line sensor is buried in the ground around an area to be protected against intrusion. One end of the transducer is impressed with constant frequency oscillator signals from a signal generator, while a resistance load impedance is connected across the other end of the transducer at the input side of an amplifier used to pass amplified signals selectively to the inputs of either a bandpass type filter or an A.M. detector, or to both simultaneously, then to their related alarms. The line sensor is sensitive to both magnetic and strain stimuli, but the system hereof, which utilizes dual alarm devices, not only provides for determining the type of stimulus creating the signals, but also improves the sensitivity and response uniformity of the transducer.

Abstract: An electronic ferroelectric length measuring transducer and system for obtaining information and read-in of that information visually to determine the length of an image as well as means to determine if a target is moving. These actions are done very quickly and accurately by changing the polarization of a ferroelectric substrate. In addition, the information, once obtained, can be stored indefinitely without recourse to any external stimuli circuitry, until readout.

Abstract: A wedge of ferroelectric material is used as a thermal imaging transducer by plating a multiplicity of signal generating electrodes to the surface of the ferroelectric wedge. The wedge is electronically polarized using a descending voltage and thermal images are read out of the transducer using an ascending voltage ramp of opposite polarity from the polarizing voltage. Readout is obtained without requiring mechanical panning or thermal image interruption even if the subject is stationary.