Abstract: In the known method, a plate of a heat-conducting material, for example silicon, is subdivided by means of grooves into blocks which remain connected to one another along break-off edges. The plate is metallized on two sides and (locally) provided with layer-shaped regions comprising solder at the upper side, the diode laser being fastened within each region, after which the blocks are separated from one another by breaking-off. A disadvantage of this method is that the blocks thus obtained are not suitable for a final mounting in which the radiation beam of the diode laser is perpendicular to the carrier plate on which the support body is fastened.

Abstract: Telecommunication systems such as PON-FITL-Systems have a TDMA frame structure comprising a main station and a number of substations. In order to achieve accurate fine ranging, an A/D-converter for acquiring samples from a ranging pulse transmitted from the substation is operated at a frequency which is high with respect to the master or bit clock, i.e. real time oversampling occurs. Such high speed A/D-converters are expensive, consume much power and have limited resolution. Furthermore, for systems with even higher bit rates the known oversampling becomes cumbersome. A quasi-oversampled coarse and/or fine ranging is proposed operating at relatively low sampling rates. Thus the substations send a repetitive ranging-bit-pattern which is sampled in the main station and thereafter reconstructed in a processing apparatus to a quasi-oversampled ranging-bit-pattern.

Abstract: A scanning device comprises a stationary section (1) with a frame (3) and a section (5) which is movable along a first axis (Z) and a second axis (X) oriented transversely of the first axis and which comprises a lens (7) having an optical axis (7a) parallel to the first axis. The scanning device comprises a focusing coil (13) for moving the lens along the first axis and two mutually parallel pairs of tracking coils (15a, 15b; 17a, 17b) for moving the lens along the second axis. The tracking coils of each pair are disposed along a line (19; 21) parallel to the second axis and have coil axes (23a, 23b; 25a, 25b) oriented transversely of a plane defined by the first axis and the second axis. Pairs of magnet poles (27a, 2b; 29a, 29b) are arranged at opposite sides of the lens, the magnet poles being spaced apart and being situated between two bounding planes (31; 33) oriented transversely of the second axis.

Abstract: In an integrated circuit an effective admittance is adjusted. The adjustment uses an admittance element in combination with a current multiplier circuit. The current multiplier circuit provides current I.sub.p proportional to a reference current I.sub.ref through the admittance element: I.sub.p =.alpha.I.sub.ref. The current I.sub.p flows through a terminal in parallel with the current I.sub.ref through the admittance element. This reduces the effective admittance to ground seen at the terminal. The proportionality coefficient .alpha. is modulated using a control circuit which sets the coefficient .alpha. in a non-linear dependence (a+bM)/(c+dM), or P(M)/Q(M), where P and Q are polynomials, on a control signal M. In this way various electronic parameters which depend non-linearly on the effective admittance can be given a linear dependence on the control signal.

Abstract: A circuit arrangement for converting of a stereo signal having a mid-plane signal and a side signal into an output signal for each of two audio signal channels. By this circuit arrangement, a simplified and also automatic crosstalk cancellation is possible.

Abstract: During recording of an MPEG information signal on a record carrier (40), transport packets (P.sub.k) are stored in signal blocks in a track (1) on the record carrier (40). x transport packets of the MPEG information signal are stored in the second block sections (SB) of y signal blocks, where x and y are integers, x.gtoreq.1 and y>1, more specifically, y>x. Further, third block sections (TB) are present in one or more of the second block sections in the y signal blocks of a group for storing additional information, which additional information relates to the specific application of recording and reproducing the MPEG information signal on/from the record carrier.

Abstract: The focusing device 8 for the primary beam in a scanning electron microscope (SEM) consists in known manner of a combination of a magnetic gap lens 34 and a monopole lens 38. The secondary electrons released from the specimen are detected in accordance with the invention by a detector whose deflection unit 52, or the actual detector 64, 66, is arranged in a field-free space between the gap lens and the monopole lens. This space is rendered field-free by a screening plate 44 arranged underneath the gap lens. In order to achieve a high detector efficiency and a large field of vision, the pole tip of the focusing device 8 is provided with an attraction electrode 42 whose potential is higher than that of the specimen.

Abstract: A sorting device is provided with a transport device (5) for displacing objects such as, for example, postal items (99) from an input station (1) to an output position (3a, 3b) selected from among a plurality of output positions (3). The transport device (5) includes a field (101) of individual transport units (23, 105) arranged in a hexagonal grid shape and each provided with a transport mechanism (27) arranged on a rotatable support (25). The output positions (3) are positioned alongside the field (101), while the field (101) is accessible through at least two separate input positions (9, 11, 109, 119).

Abstract: A spark suppressor circuit (1) is provided for protection of an electrical switch (4) which in series with a load (2) is connected between a first supply voltage terminal (8) and a second supply voltage terminal (10), the load (2) and the electrical switch (4) being interconnected at a switch terminal (6).

Abstract: A circuit supplying a stabilised voltage (Vref) which is insensitive to variations of the supply voltage (Vcc) and of the temperature, comprises a cell of four transistors. The first two transistors have their bases and collectors cross-coupled, and the first transistor has its emitter coupled to the reference voltage (VEE) by a resistor and has an emitter area larger than the emitter area of the third transistor. A fifth transistor has an emitter connected to the collector of the fourth transistor and a base which is driven by a line via a resistor. This line is coupled to the supply voltage via a current source. This resistor has a value between 2 and 4 times that of a compensation resistor coupled between the third transistor and the line. Preferably, a capacitance is connected between the bases of the second and the fifth transistor. The circuit is useful as a reference voltage source in integrated circuits where the supply voltage is afflicted with noise.

Abstract: A film provided on a cathode ray tube is cured by locally subjecting it to a flow of very hot air. The gas flow heats the film without heating the underlying display window. Said gas flow is used to scan the surface.

Abstract: The invention relates to a magneto-optical recording medium having a magneto-optical layer which is composed of a quaternary alloy of Nd.sub.x Tb.sub.y Fe.sub.z Co.sub.m, the quantitative proportions of the alloying elements x, y, z and m being selected as follows:x=4-16 at. %y=20-30 at. %m=36.5.+-.4.5+x-y at. %z=100-x-y-m at. %.

Abstract: A technical device, particularly an electromechanical deck for moving information carriers, has at least one plastics function part (25) formed on a metal plate, which part has been moulded onto the metal plate (8) by outsert-moulding and comprises at least one bridge element (28), which traverses a hole (26) in the metal plate (8), and retaining elements (30, 31), which are situated on the metal-plate surfaces (8a, 8b) and are interconnected by the bridge element (28), the movability of the function part (25) as a slidable or rotatable part being obtained automatically through shrinkage of the plastic by the following construction:a) the bridge element and the retaining elements are formed as tubular elements (28, 30, 31),b) the tubular retaining elements (30, 31) surround the edges of the hole (28) with a clearance (a) over the entire circumference,c) the bridge element (28) and the retaining elements (30, 31) are connected at the peripheral location of the hole (26) by an imperforate or perforate plastic f

Abstract: A device for segmenting textured images on the basis of digital signals which are representative of said images by characterization of each texture by using representative parameters and by decomposition of each image into regions associated with different textures, said device comprising, for said characterization of the texture, a sub-assembly (100) for directional morphological filtering and a sub-assembly (200) for determining the texture parameters, and, at the output of this sub-assembly (200), a sub-assembly (300) for segmentation into regions by means of the technique of extracting watershed lines in a texture parameter image subdivided into blocks of a given size. A sequencing stage (600) furnishes the different control signals of said sub-assemblies.

Abstract: A device for the detachable fastening of an electrical service appliance such as a car radio, a CD or cassette player, an amplifier, a traffic control unit, and the like, in an insertion opening wall (12) of a mounting frame (9), which may be the instrument panel of a motor vehicle, which appliance comprises countersupports (20) which grip behind the mounting frame (9) in a mounted state forming a back-locking position in which the appliance has been passed into the insertion opening (10) from the front, and which countersupports can be moved from the back-locking position into a release position for releasing the appliance, wherein the countersupport is formed by a latch (20) which is pivotable about a rotation shaft, which is loaded by a spring (30) in a direction towards the back-locking position, and which comprises a curved edge (42) against which an unlocking key (8) can be passed, which key when passing along the curved edge (42) pivots the latch (20) into the release position against the spring pressu

Abstract: Semiconductor diode lasers are used inter alia in optical disc systems, laser printers, bar code readers, and glass fibre communication systems. Lasers having a so-called (weakly) index-guided structure are very suitable for many applications inter alia because they can be manufactured comparatively simply and reliably. A disadvantage of the known (weakly) index-guided laser is that the so-called P-I (=optical power-current) characteristic thereof exhibits a kink. Such a kink limits the use of the laser to a relatively low optical power. According to the invention, such a (weakly) index-guided laser has a resonance cavity with a length for which the optical power at which a kink occurs in the P-I characteristic is a maximum. It was a surprise to find that the occurrence of a kink in the P-I curve of such a (weakly) index-guided laser depends on the length of the resonance cavity. Very surprising is the appearance of a maximum value in this kink power as a function of the length of the resonance cavity.

Abstract: The invention relates to a luminescent screen and to a low pressure mercury discharge lamp comprising such a luminescent screen. According to the invention the luminescent screen comprises a zeolite containing trivalent Ce. The luminescent screen exhibits a large quantum efficiency for converting UV radiation of 254 nm into radiation having an emission maximum at approximately 346 nm.

Abstract: A read device (320) for reading a record carrier (184) on which coded pictures (4TV, TV, TV/4) have been recorded. The recorded coded pictures represent pictures made up of a matrix of P rows of Q pixels (p). The dimension of the pixels in a horizontal direction is substantially equal to the dimension of the pixels in a vertical direction. A read unit (6) reads the recorded coded pictures (4TV, TV, TV/4) from the record carrier (184). The device comprises a picture converter, which preferably comprises a sample rate converter (290), for converting the read-out coded pictures into an adapted coded picture comprising P'.times.Q' coded pixels. The sample rate converter is arranged in a data path between the read unit (6) and a picture memory unit (321). The picture memory unit (321) supplies a coded picture representing a picture made up of pixels (p') whose ratio between the dimension in the horizontal direction and the dimension in the vertical direction is substantially equal to Q/P, P and Q being integers.

Abstract: For use by an emulation circuit, a non-special-custom microcontroller multiplexes a port among user data and program store addresses. It has a multistate machine cycle with plural clock pulses per state. Various additionally provided emulation pins allow for outputting to an emulation circuit any or all of the following signals:a start-of-cycle pulse indicating non-sleep modea state-wise recurrent signal signalling progress of said states during non-sleep modea signal discriminating between idle and reseta multiplexed signalization among any or all of the following:that a next-following machine cycle is the first of a next instruction;that presently an interrupt is being processed;that an external program memory access is forthcoming;that an external data memory access occurs;that an external data memory write access occurs.