Abstract: The electric lamp has a quartz glass lamp vessel (1) having first and second neck-shaped portions (2, 3) with first and second seals (4, 5). Current supply conductors (6, 7, 8; 9, 10, 11) consist of a metal foil (7, 10) embedded in the respective seal (4, 5), an inner (6, 9) and an outer current wire (8, 11) connected hereto. A seal ends with a closed fracture surface (14) through which an outer current wire (8, 11) extends. Favorably, the edge (13) of the fracture surface (14) has some small indentations (16) adjacent the origin of the fracture (19). The total length of the lamp is about 2 mm less than that of its conventional counterpart.

Abstract: Loading mechanism for loading and unloading an information disc into or from an information-technology apparatus in which first and second guides have respective first and second grooves each provided for engaging the edges of the information disc, and the second guide includes a rotationally drivable transport wheel which rolls the information disc into and out of the apparatus along a loading plane for the purpose of loading and unloading, and the first guide and the second guide are supported so as to be movable, and the first groove and second groove each have respective pressure faces inclined relative to the loading plane, and the first and second grooves each having a circumferential bottom surface and a minimum gap dimension where the respective circumferential bottom surfaces each extend substantially perpendicularly to the loading plane, and the respective minimum gap dimensions are each selected to be smaller than the thickness of the information disc, and wherein, during the loading process, the c

Abstract: Hair dryer with remote sensing of the moistness of the hair by means of a detector which compares the amount of radiant energy in two absorption bands in the spectrum of light emitted by an infra red source and reflected by the hair. One of the absorption bands is caused by water in the hair. The amount of radiant energy in this absorption band changes significantly during the drying of the hair. The other absorption band is caused by keratin in the hair. The energy in this band changes to a much smaller extent during the drying of the hair. The intensity ratio of the two bands is an indicator for the moistness of the hair and can be employed to control the temperature and/or the air flow of the hair dryer.

Abstract: A stereophonic audio signal processing arrangement for variably enhancing a stereo image, wherein the stereo image enhancement is reduced at high signal levels so as to reduce distortion. The arrangement is used in a stereophonic audio reproduction system for enhancing the stereo image, which system may be part of an audio-visual reproduction system.

Abstract: A portable electronic apparatus is disclosed having an antenna and a communication circuit. The antenna impedance is chosen to be a predetermined value which is deliberately mismatched to the impedance of the communication for a predetermined frequency band. This mismatch is chosen to optimize the signal loss between the antenna and the communication circuit when the antenna is far and near a disturbing source. The imaginary part of the antenna impedance has a sign opposite to the sign of the circuit impedance when the antenna is a predetermined distance from the disturbing source.

Abstract: To be able to transmit television pictures in a digital form through a medium having a limited bandwidth, the pictures are subjected to picture transform and to variable-length coding. The picture to be transmitted is converted in this manner into a bit stream comprising code words of variable length. This bit stream is converted into a channel bit stream which is less sensitive to transmission errors. To this end the most significant code words (representing the average luminance and the coarse picture details) of sub-pictures of 8*8 pixels are accommodated at fixed bit positions of the channel bit stream. These code words can be retrieved by simple count-down of the bit positions. The other code words are distributed over the other bit positions. The decoder is relatively simple because the length of each block comprising significant code words is also transmitted. This length is preferably adapted to the extent of picture detail in the sub-picture.

Abstract: The apparatus for encoding a plurality of digital information signals, having at least a first input unit for receiving a first digital information signal and a second input unit for receiving a second digital information signal. A signal combination unit combines the first and second digital information signal to generate a first combination signal. First and second data compression units compress the first and second digital information signal so as to obtain first and second data reduced digital information signals. First, second, and third masked threshold determining units determine first, second and third masked thresholds respectively from the first, second digital information signals and the combination signal respectively. A selection unit selects one masked threshold from the first and third masked threshold so as to obtain a first selected masked threshold. Preferably, the first selected masked threshold is the smallest of the first and third masked thresholds.

Abstract: An electric lamp according to the invention comprises a lamp vessel (10) which is closed in a gastight manner, which has an end portion (11), and which surrounds a light source (12). The lamp vessel supports a cylindrical collar (30) with an axis (31) at its end portion (11). One or several projections (33a, 33b, 33c) of a first coupling member (30) which each grip into a respective recess (41a, 41c) of a second coupling member (40) couple the collar (30) to a mounting member (40) for fastening the lamp to a carrier. At least one of the coupling members (30) is made of an elastic material.

Abstract: A cathode having a matrix body (1) impregnated with an alkaline earth compound, whose surface is provided with a top coat (2, 3, 4) comprising a high melting point metal, such as particularly tungsten, and scandium. A high emission at a low operating temperature and simultaneously a rapid recuperation after ion bombardment as well as a long lifetime are achieved in that the top coat comprises at least two layers of different composition, with a purely metallic layer (5, 6, 7) being provided on the impregnated matrix body (1), which layer comprises scandium and a high melting point metal such as particularly tungsten and/or rhenium, and in that a metallic layer of a high melting point metal such as particularly tungsten is provided as a sealing layer.

Abstract: In a device comprising an amplifier with short circuit protection, and a resistor-capacitor (RC) filter connected to the amplifier output, an inductor is arranged in parallel with the filter resistor to protect the resistor.

Abstract: A cooking apparatus comprises a glass-ceramic plate, at least one heat radiator arranged underneath the plate, at least one sensor arranged underneath the plate in an area which is shielded from the heat radiation, for measuring the temperature in this area, and a device for controlling the heating power in dependence upon signals supplied by the sensor. A simple and reliable method of measuring the temperature of the bottom of the cooking vessel can be obtained when, in the cooking apparatus the heat radiator is a halogen lamp system and the hotplate is a ceramic plate which is highly transparent to halogen-lamp radiation and has a degree of absorption of approximately .ltoreq.40%, the sensor engages against the underside of the ceramic plate, and the control device comprises an element for selecting a nominal.

Abstract: A luminescent screen includes a luminescent zeolite containing rare earths, such as terbium (Tb), and europium (Eu), and an oxide of a transition metal, such as, molybdenum (Mo), tungsten (W), niobium (Nb), and tantalum (Ta). It was found that a zeolite containing both terbium, and tungsten oxide had an absorbability that was approximately 60 times as high as that of a zeolite containing only terbium, thus increasing the luminescent efficiency of the zeolite.

Abstract: A rear projection screen is described, which comprises an optically transparent plate, a first surface of which is provided with a structure of juxtaposed cylindrical lenses which extend in a first direction and a second, opposite surface intended to be directed towards an audience space is provided with strips of a light-absorbing material. These strips also extend in the first direction. On the second surface the plate comprises diffusing means which are formed by a single element by means of a hologram, which element diffuses the light simultaneously in the first direction at a first angle and in a second direction, perpendicular to the first direction, at a second angle, the first and the second angle being different from each other.

Abstract: A circuit for detecting a level of an input direct voltage comprises a comparator for comparing the input direct voltage with a reference signal, which by means of an integrator is derived from pulses whose charge quantity is variable in dependence on a comparator direct voltage. The reference voltage has a d.c. component and an a.c. component. The comparator supplies comparator pulses of a given pulse duration when the d.c. component of the reference voltage is substantially equal to the input direct voltage. The level of the input direct voltage is determined from the charge quantity of the pulses and from the pulse duration of the comparator pulses.

Abstract: A transmitter apparatus for transmitting a digital data signal via a transmission medium (10) includes an error protection encoder (3) for carrying out an error protection encoding on the digital data signal so as to obtain an error protection encoded digital data signal, and a channel encoder (6) for converting the error protection encoded digital data signal processed into a channel encoded digital data signal. The channel encoded digital data signal is supplied to the transmission medium. The error protection encoder (3) is adapted to carry out an error protection encoding step on packets of p m-bit digital words in the digital data signal, and for supplying error protection encoded packets (Q) of n m-bit digital words to an output, where n, m and p are integers larger than 1, and n>p.

Abstract: A ceramic multilayer capacitor includes a number of ceramic layers on the basis of a doped BaTiO.sub.3 and a number of electrode layers of Ni. The ceramic layers and the electrode layers are alternately stacked to form a multilayer structure which is provided with electric connections at both side faces. The composition of the main component of the doped BaTiO.sub.3 corresponds to the formula(Ba.sub.1-a-b Ca.sub.a Sr.sub.b) (Ti.sub.1-c-d-e-f Zr.sub.c Al.sub.d Mn.sub.e Nb.sub.f).sub.k O.sub.3+.delta.wherein:0.02.ltoreq.a.ltoreq.0.080.002.ltoreq.b.ltoreq.0.030.15.ltoreq.c.ltoreq.0.200.00<d.ltoreq.0.030.001.ltoreq.e.ltoreq.0.020.0005.ltoreq.f.ltoreq.0.011.001.ltoreq.k.ltoreq.1.005.

Abstract: The invention relates to a radio transceiver having a high-frequency output stage and a control circuit for controlling the transmitter power, in which the control circuit is supplied with an actual voltage in the form of a signal derived from the transmit signal. Especially in handheld radios the environment of the antenna is affected by the position of the unit, so that antenna mismatches constantly occur. This can disturb the proper operation of state-of-the-art power control circuits. To avoid such interference, the invention proposed to supply as an actual value to the control circuit a signal which is tapped prior to the signal being supplied to the high-frequency power amplifier output stage.

Abstract: In a magnetic resonance method for imaging of a moving part of a body (106) temporary magnetic gradient fields (230) are applied and a echo signal (641, 642) is obtained after an excitation pulse (201). An image of the moving part is reconstructed from the received echo signals (240). The moving part introduces artefacts in the reconstructed image. These artefacts could be reduced when the instantaneous position of the moving part is known and the region of the moving part to be excited is adjusted according to this instantaneous position. This instantaneous position is derived from navigator signals (640). These navigator signals (640) could be generated independently from the other echo signals (641, 642) in the moving part of the body. A further reduction of artefacts in the image could be obtained by deriving a phase correction and a frequency correction from the navigator signals (640) and to apply the derived corrections to the received echo signals (641, 642).

Abstract: A low-pressure mercury vapor discharge lamp according to the invention is provided with a discharge vessel having a tubular portion and a first and a second end portion. The discharge vessel encloses a discharge space provided with a filling of mercury and a rare gas in a gastight manner. Each end portion supports an electrode which is arranged in the discharge space. Current supply conductors extend from the electrodes through the end portions to outside the discharge vessel. The tubular portion of the discharge vessel is provided with a metal oxide layer on a surface which faces the discharge space. The first and the second end portion are also provided with metal oxide layers at surfaces which face the discharge space. The lamp according to the invention has a comparatively low mercury consumption.

Abstract: The communication system allows a group of at least three apparatuses, such as game computers and Personal Digital Assistants (PDAs), to communicate wirelessly by using, for instance, infrared transmission. The apparatuses are the same from a communication point of view. A message frame (500) transmitted by an apparatus (10) can, therefore, be received by all other apparatuses (101 e.a.), which are part of the system. Reliability is increased by acknowledging correct reception of a message frame (500) and retransmitting a message frame (500) up to a predefined maximum number of times if no acknowledgement frame (510) is received. The chance of message frames (500) and/or acknowledgement frames (510) colliding is reduced. After a message frame (500) has been transmitted, a following defined time period is reserved for acknowledging reception of the message frame (500). Upon receiving the message frame (500), the receiving apparatuses (101 e.a.