Abstract:
Procédé et appareil de remplissage de polygones affichés par un moniteur couleur à tube à rayons cathodiques d'un système graphique à trame. Un contrôleur graphique (12) produit des signaux de commande qui commandent le mode de fonctionnement du système, dont deux de ces modes sont un mode d'écriture rapide de polygone (FFW) et un mode de remplissage rapide d'affichage (DFF). Lorsque le système se trouve dans le mode d'écriture à remplissage rapide de polygone, le contrôleur graphique (12) lie des bits de basculement à remplissage rapide d'une mémoire à blocs (14) d'éléments d'images frontières définissant des éléments d'images de début et de fin de chaque élément de remplissage. Les bits de basculement à remplissage rapide des éléments d'images frontières sont établis si le bit de basculement lu de la mémoire n'avait pas été établi; s'il avait été établi, il est remis à l'état initial. Dans le mode d'affichage à remplissage rapide, le système détecte l'élément d'image frontière de début de chaque élément de remplissage par l'établissement de son bit de basculement à remplissage rapide et applique l'adresse de couleur de l'élément d'image frontière de début sur une mémoire de consultation de couleur (16) jusqu'à ce que l'élément d'image de fin de l'élément de remplissage soit lu de la mémoire. Ensuite, l'adresse de couleur de chaque élément d'image d'une ligne de balayage horizontal est appliquée sur la mémoire de consultation de couleur (16) en synchronisation avec le balayage à trame jusqu'à ce qu'un autre élément d'image frontière de début d'un autre élément de remplissage soit détecté, etc., ou bien jusqu'à ce que la fin de la ligne de balayage horizontal soit atteinte.
Abstract:
A multi-material resonant thin film beam for a micromechanical sensor having a zero temperature coefficient of frequency (TCF) which is the resonant frequency shift with temperature change. One of the materials may be polysilicon and the other material may be silicon nitride or silicon oxide. Each material has a different thermal coefficient of expansion. The proportion of the various materials is adjusted and the specific geometries are determined so that the TCF is zero. One embodiment is a microbeam composed of two polysilicon thin films with a silicon nitride thin film inserted between the polysilicon films. The thickness of the silicon nitride film may be adjusted to trim the TCF to zero. The film of nitride instead may be placed on one side of a polysilicon film to form a beam. Dual or multiple beam resonators likewise may be made with several materials. The nitride may be placed in the shank areas which join and secure the ends of the beams. Such zero TCF beams may be incorporated in microsensor structures for measuring pressure, temperature, strain and other parameters.
Abstract:
A temperature sensor for the liquid crystal portion of a liquid crystal display assembly which includes a thin layer of transparent conductive material which is spread across the viewing area of the display. This layer of transparent conductive material can provide heat to warm up the display when a large voltage is put across it, and can also be used to measure liquid crystal temperature. It is known that the resistance of materials such as indium tin oxide (ITO) changes at a known rate with respect to temperature. By using this transparent layer of material in the stacked elements of a liquid crystal display assembly, an accurate reading of the liquid crystal temperature can be made.
Abstract:
A self-aligned optical coupler (12) for conducting light from and to vertical and/or horizontal ports (19, 22) on optical devices or optoelectric integrated circuits. The device or circuit having the respective port has keys (28) and/or slots (27) on the device or circuit for self-aligning an end of the optical coupler (12) to the port. The end has corresponding slots (27) and/or keys (28). Visual alignment marks may be used instead so as to permit automatic alignment with machine vision devices. The coupler may have one or a plurality of waveguides (20). One of the ends of the coupler may have a connector for a self-aligning optical connection to a connector receptacle of a module or a backplane.
Abstract:
A micromechanical sensor having a polysilicon beam that is an integral part of the diaphragm resulting in a frequency of the beam that is a direct result of the pressure applied to the external surface of the diaphragm. Fabrication of this resonant microbeam sensor has no backside wafer processing, and involves a process and layout independent of wafer thickness for high yield and robustness. Both the diaphragm and resonant beam are formed from polysilicon. The sensor may have more than one resonant beam. The sensor beam or beams may be driven and sensed by electrical or optical mechanisms. For stress isolation, the sensor may be situated on a cantilevered single crystal silicon paddle. The sensor may be recessed on the isolating die for non-interfering interfacing with optical or electrical devices. The sensor die may be circular for ease in mounting with fiber optic components.
Abstract:
An apparatus which outputs very low duty cycle pulses of a consistent width. It is common to use a pulse width modulator as part of a liquid crystal display dimming system to vary the brightness. In the typical pulse width modulating scheme for lamp dimming, certain noise irregularities may appear at the beginning of a ramping voltage. These irregularities result in pulse widths which vary greatly. In the present invention, the slope of the ramping voltage is greatly increased at the beginning of the period, thus making the comparison between the reference voltage and the ramping voltage more accurate.
Abstract:
A control circuit for the interface circuit of a module of a distributed process control system permits its kernel submodule and peripheral submodule to communicate through the interface circuit notwithstanding that the structure and protocol of module BUS of the kernel submodules is incompatible with the structure and protocol of the PCI BUS of the peripheral submodule. The control circuit includes a module BUS state machine (MBSM), a PCI target state machine (PTSM), an arbiter state machine (ARSM), and an address decode logic (ADL) circuit. In response to control signals from the kernel and peripheral submodules applied to the control circuit over their respective buses, and control signals produced by the MBSM, the PTSM, the ARSM, and the ADL circuit. Which one of the two submodules is granted access to the registers of the interface circuit is determined by the control circuit which also grants the peripheral submodule access through the interface circuit to the memory of the kernel submodule. If both submodules request access to the interface circuit at the same time the peripheral submodule has priority. The control circuit prevents either submodule from successive accesses to the interface circuit if the other submodule has a request for access pending.
Abstract:
An interactive voice responsive system for radio tuning including a voice recognition device responsive to a verbal command. In response to the verbal input to the voice recognition device (6), a digital signal of the verbal command is sent to a database (8). The database (8) matches the digital signal with a file in the database synonymous with the digital signal and selects the file. Files in the database contain information such as tuning frequency. The frequency of the file selected is sent to a radio (10) and causes the radio (10) to be tuned to that frequency.
Abstract:
There is provided an event management system and a storage media for identifying and logging event information for a plurality of loosely coupled subsystems. The event management system and the storage media include an application for reporting an event message in response to an occurrence of a particular event, and an event logging routine, responsive to receiving the error message, for identifying a source of the error message and for obtaining detailed error information for the error message at a time frame when the particular event occurs. In addition, the event management system and storage media include an event viewer for viewing the detailed error information.