Abstract: A repeater employs multiple threshold detectors to distinguish between signals from external devices and signals generated within the repeater. Signals that are sent from the repeater are configured to be between two threshold levels, so that a detector at one threshold level will detect an active signal, but the detector at the other threshold level will not detect an active signal. When an external signal is received on one side (A) of the repeater, it is propagated to the other side (B) of the repeater, and at the same time, the other side (B) of the repeater is configured to only propagate external signals back to the first side (A). In this manner, the internally generated signal from one side (A) is not propagated back to the same side (A), and a latch-up is avoided. In like manner, when an external signal is received at the other side (B), the first side (A) of the repeater is configured to propagate only externally generated signals.

Abstract: A stream of channel bits, of a signal relating to a binary channel, is decoded into a stream of source bits, of a signal relating to a binary source. This binary channel includes a main channel and a secondary channel. This secondary channel is embedded in the main channel. Errors in the stream of secondary channel bits are corrected using a stream of corrected main channel bits. This stream of corrected main channel bits is reconstructed from a stream of corrected source bits. The secondary channel can be embedded in the main channel in different manners, e.g. via multi-level coding or via merging-bit coding.

Abstract: A cordless telephone system includes a base station having a base clock indicative of the time of day, and a handset having a handset clock indicative of the time of day. The handset is synchronized to the base station. When power is lost in the handset or the base station, the unit with power detects loss of synchronization therebetween. Upon restoration of the power, the continually powered unit provides the power restored unit with clock recovery information for updating the clock of the power restored unit. The clock recovery information is generated in the continually powered unit by counting elapsed time when the loss of synchronization is detected.

Abstract: A metal-halide lamp including a discharge vessel with a ceramic wall, the discharge vessel enclosing a discharge space which contains an ionizable filling which filling contains halides of Na and Tl in addition to Hg. The ionizable filling also contains Ca and is free from rare-earth halides.

Abstract: A transmission system comprising a transmitter with a signal encoder, the signal encoder having an input for a signal to be encoded and a codebook entry selector for selecting a codebook entry for obtaining a synthetic signal giving a best approximation of a signal representative of the input signal, wherein the codebook entry includes a plurality of samples that can assume more than two values and is identified with a sequence of symbols, a receiver having a decoder with a codebook for deriving the codebook entry from the sequence of symbols received from the transmitter, wherein the codebook entries corresponding to sequences of symbols that differ in one particular symbol value also differ in one single sample value.

Abstract: A record carrier on which information is recorded in the form of first variations caused by the presence or absence of information marks along a recording track, such variations representing an information signal. The record carrier also exhibits second variations in the form of changes in the position of the information marks in a direction transversed to the track direction. The second variations having a frequency spectrum substantially entirely outside the frequency spectrum of the first variations. The second variations are detectable by the same playback transducer which detects the first variations, and the presence of the second variations may be necessary to enable the transducer to detect the first variations.

Abstract: A distributed pattern recognition system includes at least one user station and a server station. The server station and the user station are connected via a network, such as Internet. The server station includes different recognition models of a same type. As part of a recognition enrolment, the user station transfers model improvement data associated with a user of the user station to the server station. The server station selects a recognition model from the different recognition models of a same type in dependence on the model improvement data. For each recognition session, the user station transfers an input pattern representative of time sequential input generated by the user to the server station. The server station retrieves a recognition model selected for the user and provides the retrieved recognition model to a recognition unit for recognising the input pattern using the recognition models.

Abstract: In coding a sequence of pictures (P), a motion vector (MV) is established for a block of pixels (B(*,*;n)) in a current picture (P(n)) to be coded. The motion vector (MV) indicates a block of pixels (B(*,*;n−1)) in a previous picture (P(n−1)) which is similar to the block of pixels (B(*,*;n)) in the current picture (P(n)) to be coded. Data (D) relating to the block of pixels (B(*,*;n)) in the current picture (P(n)), is compressed (CMP). The extent to which the data (D) is compressed depends on a compression parameter (CP). The compression parameter (CP) is controlled on the basis of the motion vector (MV). Accordingly, data relating to a block of pixels representing a moving object can be compressed to a relatively small extent, whereas data relating to a block of pixels representing a stationary object can be compressed to a relatively large extent. This allows a relatively good picture quality at a decoding end.

Abstract: A high-pressure metal halide discharge lamp having a power rating of at most 100 W is provided with a discharge vessel having a translucent ceramic wall with a thickness d of at least 1.2 mm. In the discharge space enclosed thereby, two electrodes are arranged with their electrode tips at a mutual interspacing EA. The discharge vessel contains an ionizable filling comprising at least Na and a halide.

Abstract: The invention relates to a sensor which includes a reference electrode as well as a plurality of sensor elements, each sensor element including a collector electrode and a photoconductor structure which is arranged between the reference electrode and the collector electrodes, as well as a switching element which connects the collector electrode to a read-out lead, the sensor elements being arranged in a matrix of n rows and m columns, where n, m are larger than 1. Correct operation of even the sensor elements in the edge zone of the matrix is achieved, irrespective of the construction of the edge of the photoconductor structure and the reference electrode, in that the matrix is provided with a guard electrode window (9) which is arranged between the read-out lead (5) and the photoconductor structure (6) of the sensor elements (21) constituting the edge of the matrix and extends beyond the edge of the photoconductor structure (6).

Abstract: The invention relates to a local area network operating in the asynchronous transfer mode (ATM) for transmitting cells, comprising a plurality of network interfaces (1 to 8) coupled to a ring by ring connections (29 to 32), each network interface including a switch (24). For providing a more flexible local area network, at least one network interface (1 to 8) includes a radio device (33) for exchanging data with at least one terminal (9 to 21) located in the radio coverage area of the network interface (1 to 8). For controlling the cell transport within a network interface, a switch (24) is provided.

Abstract: The invention relates to a method of localizing an object in a turbid medium. After measurement of the intensities for a plurality of light paths between the light sources and the detectors, the measured intensities are normalized. Subsequently, an image of the interior of the turbid medium is reconstructed on the basis of the measured intensities. In order to counteract artefacts in the reconstructed image, the combination includes a weighting factor which reduces the effect exerted on the reconstructed image by the measured intensities with a high noise factor in comparison with the effect exerted thereon by the measured intensities with a low noise factor.

Abstract: The system comprises an appliance (10) for personal body care, a pump (20) and a holder (40). The appliance (10) comprises a treatment device (11, 14, 31) for carrying out a body-care treatment under the influence of a fluid. The fluid is held in the holder (40) and can be pumped to an outlet opening 30 (32) by means of the pump (20). The system is characterized in that the holder (40) comprises a flexible wall (41), and in that the pump (20) is detachable from the holder (40) and is detachable from the appliance (10). This combination of measures makes 42 it possible to adapt the dimensions of the holder (40) to an 4 ergonomic shape of the appliance (10).

Abstract: An ultrasound process and apparatus for determining the location of an ultrasonic homogeneity discontinuity called parietal surface situated in a tissue from a radio-frequency signal (y(z)) function of digital depths along an excitation line (Z) crossing the parietal surface. The process and apparatus includes filtering the radio-frequency signal in order to provide a tissue signal (e(z)) representative of tissue scatterers, apart from a radio-frequency excitation signal. Also, filtering the tissue signal (e(z)) in order to provide a variance amplitude signal (S(z)) as a function of the digital depths on the excitation line wherefrom the corresponding parietal surface digital depth is determined. This process is used to estimate an artery radius from the digital depths of the arterial walls on the excitation line.

Abstract: A low-pressure mercury-vapor discharge lamp is provided with a discharge vessel and a first and a second end portion (12a). The discharge vessel encloses a discharge space provided with a filling of mercury and an inert gas in a gastight manner. Each end portion (12a) supports an electrode (20a) arranged in the discharge space. An electrode shield (22a) encompasses at least one of the electrodes (20a) and is made from a ceramic material. Preferably, the electrode shield (22a) is tubular in shape with a lateral slit directed towards the discharge space.

Abstract: A method and arrangement for simultaneously displaying a graphic image (23) (e.g., a control menu of a television receiver or video recorder) and a video image (22). In order to achieve optimal legibility of the menu without fully obscuring the underlying video signal, the graphic image is accommodated within a window (21) and the window is given an adequate color (24) which is additively mixed with the video signal. The mixing factor is preferably controlled in response to the amount of spatial and/or temporal activity of the video signal within the window.

Abstract: A terminal, automatic recall procedure, and telecommunication system are disclosed which include means for integrating an automatic repeat call function in a terminal of a telecommunication network provided with a data transfer protocol which operates in the simultaneous bidirectional mode. The automatic repeat call function is realized by a device which is integrated in a local terminal provided with a command which is to be triggered after an effort to achieve a connection to a distant terminal has failed, with the object of automatically repeating the effort until the connection has been established, but staying within the limit of a given number of repeat operations.

Abstract: A transflective liquid-crystal display device comprising a display cell (1) and a reflective polarizer (9), which preferably incorporates a cholesteric mirror (12) which practically completely reflects incident radiation (light) (14) of a specific polarization (left-hand or right-hand) originating from the display cell (reflective effect) and which passes a substantial degree of radiation (15) of the same polarization originating from (a light source (10) on) the other side (transmissive effect).

Abstract: A device for generating an indicator signal that corresponds to an AC signal amplitude is configured such that the DC current drawn by the device is substantially proportional to the AC signal amplitude. The device is particularly well suited for automatic gain control of low-power communications equipment.