Abstract:
A method for compliant conductive interconnect whereby conductive adhesive is dispensed directly onto conductive sites of a first substrate and, while adhesive is wet or with partial or complet curing, a second substrate is aligned and placed in contact with adhesive deposits, thereby completing the interconnect. After assembly, un-filled underfill shrinks sufficiently to compress compliant adhesive and external clamping is largely eliminated. The method is scalable as low as about 6 mils with no real upper limit according to the percentage conductive particles by volume in the adhesive.
Abstract:
Arrays of vertical cavity surface emitting lasers ("VCSEL"s) (21-26) used for illumination in both infrared and visible light wavelengths are described. By using several different arrays (21-26), each array (21-26) generating light of a different wavelength, a replacement for conventional lighting sources can be obtained. The present invention offers lower power consumption and longer operating lifetime than known lighting technologies.
Abstract:
The present invention relates to a method of reconstructing an image from scanned parts of an original image obtained by relative movement between a scanning device and the original image so that adjacent scanned image swaths overlap. The scanning device comprises navigation means for determining the position of the scanning device relative to the original image. Navigation corrections are calculated by correlating features within the area of overlap between adjacent swaths.
Abstract:
The present invention relates to a page turning facility in a device for storing and displaying pages of electronic information and has particular relevance to small-screen pen-based devices. The embodiment described has a symbol (18) in the form of an open book (24) with a double-headed arrow (26) above the book for the user to employ for page turning. The book has page delimiters (36) and when these are traversed by a pen input device, the display moves a predetermined number of pages. The user can stroke the symbol repeatedly to riffle through pages with the rate of page turning being under user control. The symbol is positioned off-screen so as to save screen space.
Abstract:
The present invention relates to devices for displaying pages (20) of electronically stored data, particularly handheld, pen-based devices. Each of the pages has a region (24) for displaying a title. Users can move or copy displayed pages by pressing an off-screen button which causes the display to animate to show movement of the page so that the title of the page is shown skewed. When the user has selected a destination for the page, the button is again pressed to cause the page to be replaced in the selected destination. This invention provides a naturalistic way for users to move and copy pages in a personal information device and is particularly effective for maintaining two contexts on a small screen.
Abstract:
A telecommunications network architecture is known comprising a switching system for effecting basic call processing to set up, maintain and clear calls, and service-providing means (SPA) communicating with said switching system for providing services additional to said basic call processing. Due to the high availability requirements typically placed on telecommunications networks, the service providing means will generally need to be of a fault-tolerant design. A fault-tolerant architecture is provided that relies on the checkpointing to a reliable store (55) of state data for services currently being provided from first service logic (50) of the service-providing means; should the first service logic (50) fail, a second service logic (52) is brought into operation and provided with required state data on current services from the backup store (55). To reduce the amount of checkpointing of data by the first logic (50), state data is only checkpointeed when the correspponding call has reached a stable phase, the loss of a call during setup being much more acceptable than after it is been established.
Abstract:
A C-shaped superconducting magnet for use in magnetic resonance imaging (MRI) equipment is disclosed. The magnet includes flux concentrators on opposing sides of the gap, for generating a vertical field therein; the flux concentrators include a plurality of coils, for carrying current in opposing directions, so as to generate an inwardly directed field to compensate for the gap. Injection correctors, each consisting of a horizontal coil, are disposed adjacent the flux concentrators. A flux return body, for example a superconducting solenoid or an iron yoke, provides a return path on the opposite side of the magnet from the gap. Flux deflectors guide return flux in a curved path from the flux return body to the injection correctors. The flux deflectors are constructed to include a superconducting coil which is wound about varying chords (or the full diameter) thereof, so that the induced flux is greater nearer the outside of the flux deflector, compensating for the tendency of the flux to crowd along the inner portion of the curved path. The return flux is thus provided to the injection correctors with sufficient uniformity to be corrected thereby.
Abstract:
An apparatus for evaluating the fetal condition prior to or under birth receives the signals of a fetal heart rate transducer (35) and a toco transducer (36). The signals are first preprocessed (42) in the time domain and in the frequency domain. A trace processor (63) identifies possible events like decelerations and contractions. These are validated by a validation processor (64), whose output is then classified by a classification processor (65). A score processor (67) scores the events and cooperates with an alarm handler (154) and a reasoning processor (156). The rules according to which these processors operate are stored in a rule memory (90) and may be edited or selected, or new rules may be set up, by a display or personal computer (37) under control of an expert interface (92).
Abstract:
A method is provided for ascertaining topology features of a network of the type comprising a plurality of sub-networks, spanning devices (14) interconnecting the sub-networks, and stations (11) operative to source and/or sink traffic to/from the sub-networks, the traffic being in the form of discrete message packets each including source and destination information. Traffic on each of the sub-networks is monitored by a respective monitoring device (12) and a partial traffic matrix is built up for each sub-network. These partial traffic matrix are then analysed by a central processing station (13) to determine, for example, the association of stations (11) with sub-networks, and the interconnection of pairings of sub-networks by spanning devices (14).
Abstract:
An attenuator comprises a plurality of attenuation stages (10, 11, 12, 14) which are selectively switchable into or out of a signal path by switches (18 to 25) to provide a desired attenuation level. The switches may be RF switches such as PIN diodes or GaAs FET switches. The attenuator includes a switchable gain stage (16) which can be switched into the signal path to compensate for loss resulting from the switches.