Abstract: A lens bears a plurality of roll-coated layers to pass, to one eye of a viewer, a first image, in a first band of wavelengths, that is appropriate for 3D viewing of a stereoscopic image.

Abstract: A lens bears a plurality of roll-coated layers to pass, to one eye of a viewer, a first image, in a first band of wavelengths, that is appropriate for 3D viewing of a stereoscopic image.

Abstract: A multichannel audio system for radiating sound to a listening area that includes a plurality of listening spaces. The audio system includes directional audio devices, positioned in a first of the listening spaces, close to a head of a listener, for radiating first sound waves corresponding to components of one of the channels and nondirectional audio devices, positioned inside the listening area and outside the listening space, distant from the listening space, for radiating sound waves corresponding to components of a second of the channels.

Abstract: A multichannel audio system for radiating sound to a listening area that includes a plurality of listening spaces. The audio system includes directional audio devices, positioned in a first of the listening spaces, close to a head of a listener, for radiating first sound waves corresponding to components of one of the channels and nondirectional audio devices, positioned inside the listening area and outside the listening space, distant from the listening space, for radiating sound waves corresponding to components of a second of the channels.

Abstract: A multichannel audio system for radiating sound to a listening area that includes a plurality of listening spaces. The audio system includes directional audio devices, positioned in a first of the listening spaces, close to a head of a listener, for radiating first sound waves corresponding to components of one of the channels and nondirectional audio devices, positioned inside the listening area and outside the listening space, distant from the listening space, for radiating sound waves corresponding to components of a second of the channels.

Abstract: A lens bears a plurality of roll-coated layers to pass, to one eye of a viewer, a first image, in a first band of wavelengths, that is appropriate for 3D viewing of a stereoscopic image.

Abstract: An acoustic device, including an acoustic enclosure and a first electroacoustical transducing apparatus comprising a motor structure providing mechanical vibration, the vibration having a direction of vibration, mounted in the acoustic enclosure. The acoustic device is constructed and arranged so that first pressure waves are radiated from a first radiation point and second pressure waves are radiated from a second radiation point and so that the first pressure waves and the second pressure waves destructively interfere at observation points relatively equidistant from the first and second radiation points. The acoustic device is further constructed and arranged to be structurally combined with a seating device so that the first radiation point is relatively close to the head of an occupant of the seating device and so that the second radiation point is relatively far from the head of the occupant. The acoustic device is further constructed and arranged to transmit the mechanical vibration to the seat back.

Abstract: An induction cooking system including one or more methods or apparatus for identifying items of cookware. The identifying may include identifying whether in use, the temperature of the outside surface of the element of cookware is significantly lower than the temperature of the inside surface. The methods may include one or more of measuring impedance, communicating information by RF radiation, or measuring reactance.

Abstract: An acoustic device, including an acoustic enclosure and a first electroacoustical transducing apparatus comprising a motor structure providing mechanical vibration, the vibration having a direction of vibration, mounted in the acoustic enclosure. The acoustic device is constructed and arranged so that first pressure waves are radiated from a first radiation point and second pressure waves are radiated from a second radiation point and so that the first pressure waves and the second pressure waves destructively interfere at observation points relatively equidistant from the first and second radiation points. The acoustic device is further constructed and arranged to be structurally combined with a seating device so that the first radiation point is relatively close to the head of an occupant of the seating device and so that the second radiation point is relatively far from the head of the occupant. The acoustic device is further constructed and arranged to transmit the mechanical vibration to the seat back.

Abstract: A method for processing a multichannel audio signal. The method includes mounting electroacoustical transducers in a low frequency augmenting device. The electroacoustical transducers radiate different high frequency acoustic energy and common low frequency acoustic energy. The transducers may be part of directional arrays. The method is applied to multimedia entertainment devices.

Abstract: A lens bears a plurality of roll-coated layers to pass, to one eye of a viewer, a first image, in a first band of wavelengths, that is appropriate for 3D viewing of a stereoscopic image.

Abstract: An acoustic device, including an acoustic enclosure and a first electroacoustical transducing apparatus comprising a motor structure providing mechanical vibration, the vibration having a direction of vibration, mounted in the acoustic enclosure. The acoustic device is constructed and arranged so that first pressure waves are radiated from a first radiation point and second pressure waves are radiated from a second radiation point and so that the first pressure waves and the second pressure waves destructively interfere at observation points relatively equidistant from the first and second radiation points. The acoustic device is further constructed and arranged to be structurally combined with a seating device so that the first radiation point is relatively close to the head of an occupant of the seating device and so that the second radiation point is relatively far from the head of the occupant. The acoustic device is further constructed and arranged to transmit the mechanical vibration to the seat back.

Abstract: A loudspeaker system having a dual voice coil for radiating sound waves from a multiple channel system. The loudspeaker system includes an audio signal input, a first driver having a first voice coil which has a first and a second voice coil winding, and a second driver having a voice coil which has a first and a second voice coil winding. The audio signal input is coupled to the second voice coil winding of the first driver and to the second voice coil of the second driver.

Abstract: A fan heatsink assembly is provided to afford cooling for electronic components mounted on a circuit board. The assembly includes a blower mounted on top of a specially shaped heatsink, the heatsink having a truncated hyperbolic shaped central member, with fins radially emanating from the center. The blower draws air in through the area between the fins, up the curved central portion and into the blower assembly where it is then exited out the sides of the fan. The fins may be smooth or textured, straight or curved. The fan heatsink assembly is attached to the device to be cooled. Heat is transferred from the electronic component, into the heat dissipating member where the fan causes air to be drawn up between the fins and along the curved center portion, removing heat from the heat dissipating member and the electronic component.

Abstract: A parallel air flow system which automatically maintains proper coolant flow regardless of the number of circuit boards installed in an enclosure. The enclosure is constructed such that air flow path through any one slot does not affect the air flow through any other slot. Proper air flow through the entire system is maintained by an air flow sensor disposed in an air flow path having a known air flow resistance. This sensor controls the speed of an air-mover in order to maintain a constant predetermined air flow through the known resistance, in such a way that a constant static air pressure is maintained at each slot. Baffle modules are preferably inserted into the enclosure to prevent air flow into any empty slots, to reduce the total air volume necessary to achieve the predetermined static pressure, thereby reducing the audible noise generated by the air-mover.

Abstract: A package for integrated circuit chips, or other electrical devices, provides mechanical shock and thermal protection for the chips, and in addition, protects the chips from electromagnetic interference and electrostatic discharge. The package includes a printed wiring board base for reception of one or more circuit chips, and a conductive heat sink and cover. The conductive heat sink, in conjunction with a reference plane in the wiring board base, acts as an EMI shield for the chips. The heat sink is covered with an insulating layer, on top of which, a conductive coating is placed. The conductive coating is electrically connected to the reference plane, and the two act to protect the chips from electrostatic discharges. Compliant pads support the chips, and a thermally conductive elastomer can be placed on top of each chip between the chips and the inner top surface of the heat sink. The chips are thereby held securely in position, and are thermally connected to the heat sink.

Abstract: The present invention comprises a computer system housing embodying the invention incorporates a frame upon which the components of the computer system are mounted. The frame has a base, a main unit secured to the frame, and a front compartment, for mounting mass storage unit therein, swingably positioned on the main unit. A housing adapted for supporting a central processor unit and a power supply of the computer system is removable disposed in the main unit. The frame and the housing are provided with all pneumatic connections so that air for cooling various components of the computer system may be brought over such components by the action of a fan mounted on the base. Thus, internally generated heat in such components can be readily dissipated by the air flow over such components. The frame and the housing are adapted so that the components of the computer system positioned therein are accessible with relative ease so that they are installed, replaced, and repaired easily.

Abstract: The present device includes a resistor network wherein the values of the resistors are chosen such that the heat generated by current passing through the resistors will be substantially equal to heat generated at a semiconductor junction which is to be cooled. The present device further includes a heat sink which is substantially identical to the heat sink employed to withdraw heat from the semiconductor junction to be cooled. Accordingly, the present device provides heat which is identical to the heat generated at the semiconductor junction and which heat remains ambient to the semiconductor junction to be cooled. The present device further includes a sensor which converts temperature to an electrical signal and which is located substantially in the center of the resistor network and at a distance from the heat sink that approximates the position of the semiconductor junction from its heat sink.

Abstract: A loudspeaker system comprises a woofer in a front panel, a midrange driver facing to the front and a tweeter in a corner panel separated from the midrange driver by the woofer and pointing to the front and side with a crossover network arranged to energize at least the midrange and tweeter in an overlapping frequency range. An adjustable deflector is positioned near the tweeter. Another embodiment of the invention has only a woofer and a tweeter on only one corner panel with the crossover network arranged to energize the two in a common frequency range that is greater than an octave.

Abstract: A loudspeaker system comprises a woofer in a front panel, a midrange driver facing to the front and a tweeter in a corner panel separated from the midrange driver by the woofer and pointing to the front and side with a crossover network arranged to energize at least the midrange and tweeter in an overlapping frequency range. An adjustable deflector is positioned near the tweeter. Another embodiment of the invention has only a woofer and a tweeter on only one corner panel with the crossover network arranged to energize the two in a common frequency range that is greater than an octave.