Abstract:
A computer system comprises a plurality of processes, each having an associated memory region, and a shared memory region shared by the processes. One of the processes is configured to control allocation of space for an array in the shared memory region, generate a descriptor therefor pointing to the allocate space and transmit the descriptor to the other processes. Therafter, all of the processes are configured to identify regions of the array for which they are to process data therein, and to perform predetermined processing operations in connection therewith.
Abstract:
A structure and method for dissipating charges comprising an underlying dielectric layer disposed over capacitor plates of sensor circuitry a gap being formed conformally between adjacent plates and a topographic discharge grid over the underlying dielectric layer and wherein the topographic discharge grid fills at least a portion of the gap between the plates over the dielectric layer and diffuses electrostatic charges at the surface of the integrated circuit.
Abstract:
A method for normalizing the lighting changes in an input image made up of an X and Y array of pixels having various illuminating intensities, wherein the lighting changes having an additive effect and a multiplicative effect on the input image. The method comprises the steps of estimating the additive effect from the input image to provide a background estimate; estimating the multiplicative effect from the input image to provide a gain estimate; subtracting the background estimate from the image; and normalizing the image with respect to the gain estimate. Also described is an apparatus for automatically determining the identity of an image. The apparatus comprises video camera for acquiring the image to be recognized and a light normalizer coupled to the video camera for normalizing lighting changes in the image and producing a normalized image which can be more accurately recognized. Also included in the apparatus is an image recognizer coupled to the light normalizer, for receiving the normalized image and determining the identity of the image.
Abstract:
A vertical conduction NPN bipolar transistor with a tunneling barrier of silicon carbide in the emitter providing a high emitter injection efficiency and high, stable current gain. The emitter structure comprises a heavily doped polysilicon layer atop a silicon carbide layer that contacts a shallow, heavily doped emitter region at the surface of an epitaxial silicon layer, which is disposed on a monocrystallinie silicon substrate. The silicon carbide layer is about 100 to 200 angstroms thick and has a composition selected to provide an energy band gap in the 1.8 to 3.5 eV range. The thickness and composition of the silicon carbide can be varied within the preferred ranges to tune the transistor's electrical characteristics and simplify the fabrication process.
Abstract:
A lockable spark generating device for a lighter includes a supporting frame, an ignition means and a locking means. The supporting frame is disposed on a gas reservoir having a valve which is actuated by a gas lever pivotally mounted on the supporting frame for releasing gas therefrom. The ignition means comprises a flint supported by a resilient element and a spark wheel which is rotatably mounted on the supporting frame for movement between a locking position and an ignition position. The spark wheel has a knurling surface adapted for contact by a user and rotatable by the user and a striking surface in contact with the flint. The flint is retained urging against the striking surface of the spark wheel by means of the resilient element for generating sparks directed toward the valve when the striking surface is driven to rotate against the flint by moving the knurling surface in the direction of the gas lever by the user. The locking means comprises at least a locking pawl member disposed on the supporting frame having a pawl surface adapted to engaged with the knurling surface of the spark wheel when the spark wheel is positioned in the locking position normally for stopping any rearward rotation movement of the spark wheel to prevent unexpected ignition, thereby rendering the lighter children resistant.
Abstract:
In nuclear magnetic resonance tomography apparatus operable with a pulse sequence according to the echo-planar method, only a part of the k-space is scanned in the phase-coding direction per data acquisition, i.e., per radio-frequency excitation pulse. A phase-coding gradient is used such that regions of the k-space which are interleaved relative to each other are scanned in successive data acquisitions in the phase-coding direction. The number of echoes employed for the raw data matrix, and thus the resolution in phase-coding direction, or the length of the individual pulses of the read-out gradient, and thus the resolution in read-out direction, can thereby be enhanced.