Abstract:
A method of manufacturing an electronic device comprising an integrated circuit device having micromechanical switches (10) and thin film circuit components (20) provided on a common substrate (2). The micromechanical switches (10) have contact beams (12) extending over a respective sacrificial region. Component layers (5) for forming the thin film circuit components are used as the sacrificial region in the area of the substrate allocated to the micromechanical switches . This enables various layers to be shared between the switches and the components. A supplementary support layer (50) may be provided for the contact beams to protect them against damage during subsequent processing and fabrication stages. A portion of this support layer can be left attached to the beam in the completed device for increased strength.
Abstract:
An arrangement is disclosed for receiving a digital signal from a transmission medium. The arrangement comprises a variable equalizer (6) for equalizing a received signal so as to obtain an equalized signal, and a bit-detector (12) for detecting a sequence of bits from the equalized signal. The arrangement further comprises an asynchronous sampling unit (4) for sampling a received analog signal so as to obtain a first signal having asynchronous samples. To control the variable equalizer (16, 18, 20) a control signal is generated from the values of at least one sample of a signal having asynchronous samples, at either side of a zero crossing in said signal.
Abstract:
A transflective color display having apertures in reflective electrodes through which light from a backlight (9) passes in the transmissive mode. The switching behavior for both the reflective and the transmissive mode is made identical by introducing a retardation plate (11). The transmission efficiency is further increased by using only a monochrome green mode in transmission.
Abstract:
A digital image signal is watermarked by locally changing geometric features of the image. The watermark consists of a pseudo-random, dense subset of image pixels, e.g., a pattern of lines (20). A number of significant image pixels (21,22,23), i.e., pixels which give the highest response to a predetermined processing operation, is determined and then moved (24) to the vicinity (null) of the line pattern. As a result of this nullwarpingnull, the majority of significant image pixels (21,22) is eventually located within the vicinity of the line pattern. At the receiver end, the most significant pixels of an input image are again determined. The image is a watermarked image if a statistically high percentage lies within the vicinity of the line pattern.
Abstract:
A filter device filters a speech signal that has a frequency spectrum featuring slopes separated by valleys. The filter device amplifies the slopes and attenuates the valleys for improving the intelligibility of the signal. The filter device includes a predictive speech signal analysis circuit for determining a polynomial whose coefficients are Linear Predictive Coding (LPC) parameters. The filter device further includes a calculator for synthesizing a digital post filter of the zeroes/poles type based on this polynomial. An extraction circuit of the filter device taps values of poles by extracting roots of the polynomial, and an interpolation circuit between the values of poles derives therefrom the zero values of the post filter.
Abstract:
Depilation apparatus with a housing and a depilation member for gripping hairs on human skin and pulling the hairs from the skin comprises a vibration member for exerting mechanical vibrations on the skin. Such mechanical vibrations have an anaesthetizing effect on the skin so that pain sensations caused by the process of pulling hairs from the skin are relieved. The vibration member comprises flexible protrusions which have been disposed on a carrier. In this way, the mechanical vibrations are introduced into the skin in distinct concentrated positions on the skin.
Abstract:
An information processing system has first and second electronic sub-systems, and control means for controlling the sub-systems. At least the first sub-system has a software representation registered with the control means. The control means changes a state of the first sub-system through interacting with the software representation. The first and second sub-systems are also capable of interacting directly with one another without the control means being involved. To avoid conflicts, at least the first sub-system is capable of de-registering with the control means so as to functionally disable its software representation at the control means.
Abstract:
In an image retrieval system, a database with a large number of images is searched to find one or more images meeting the specification of a user. This specification is given in the form of a query image. The system determines the similarity between the query image and a particular image from the database by comparing the color histograms of the two images. The histograms are treated as statistical distributions and the similarity is determined on the basis of an information theoretic measure of the distributions. In a first embodiment, the similarity is determined using the Kullback informational divergence of the two histograms. In a second embodiment, the similarity is based on the entropy of the distribution of similarity coefficients of the two histograms is used.
Abstract:
A frequency divider DIV/4 composed of memory cells (DL1 . . . DL4) realized in ECL technology, whose data paths constitute a loop, the data output Q4 of the last memory cell DL4 being cross-connected to the data input D1 of the first memory cell DL1. The clock inputs Ck of the memory cells DL1, DL3 of the odd rank are connected to the input IN of the frequency divider circuit DIV/4, while the others are cross-connected to said input. Such a frequency divider generates a noise having a unique frequency which is twice the frequency of the input signal, irrespective of the division ratio obtained.
Abstract:
The invention relates to an image guided surgery system, having an optical position measuring system which includes a detector arrangement (3) and a marker arrangement (4, 5, 6). In known optical position measuring systems, for example comprising two cameras and three LEDs per marker arrangement, a direct line of sight must continuously exist between the detector arrangement (3) and the marker arrangement (4, 5, 6) in order to ensure reliable and continuous operation of the system and to supply the surgeon continuously with information concerning the current position of an instrument or another part provided with a marker arrangement during the treatment. Blocking of the direct line of sight has a negative effect on the operation of the position measuring system. These drawbacks are avoided according to the invention in that at least one mirror (7) is provided in order to establish an indirect line of sight (5i, 6i) between the detector arrangement (3) and the marker arrangement (4, 5, 6). It is thus ensured that at least one line of sight exists at all times.