Abstract:
The invention concerns a display screen free from screen pattern, characterised in that the intermediate subassembly transparency, through which observation is carried out, is substantially constant at the scale of a subassembly anode. The intermediate subassembly patterns have a sufficiently low periodicity in at least one direction. The invention is applicable to the production of display screens, for instance with micropins.
Abstract:
The invention concerns a method for preparing at least one fluorinated compound film by vacuum deposit formation, which consists in, simultaneously with the vacuum deposition, also generating and/or introducing in the gas phase, at least a reducing species and elemental, molecular or bound fluorine, thereby producing during its deposit formation the fluorination of the fluorinated compound film. The invention also concerns the resulting thin films and thin film layers. Said films or film layers deposited on a substrate can ensure an optical function, such as mirror, spectral filter or antiglare coating, in the spectral field ranging from ultraviolet to infrared, or act as protective coating on optical components for example for protecting them against intense laser flux or against corrosive atmosphere.
Abstract:
A method for transfer molding a standard electronic package and an apparatus resulting from such method. A substrate (10) with an attached electronic device (20) is placed in lower platen (23), with end (54) of spacer (53) contacting inside surface (79) and end (55) contacting inside surface (81). A molding compound passes into mold cavity (25) through runner (24), into gate (26 and 27) and flows over upper surface (57) and lower surface (59) and around edges (8) of substrate (10). A seal is formed from portions (77 and 83) of the mold platens (23, 29) and a portion of a printed circuit board (10) along at least one side of the printed circuit board (10), adjacent to electrical contacts (51) located within protective cavity (95). After the apparatus is removed from the mold, steps (91 and 93) create an attachment area for a protective cap which is placed over the electrical contacts (51).
Abstract:
An open ear canal hearing aid system (1) comprises an ear canal tube (10) sized or shaped for positioning in an ear canal of a user so that the ear canal is at least partially open for directly receiving ambient sounds. The open ear canal hearing aid system (1) further comprises a sound processor (44, 46) for amplifying received ambient sounds included within a predetermined frequency to produce processed sounds and a receiver (50) for supplying said processed sounds to said ear canal tube.
Abstract:
An apparatus for sensing three properties of materials: the conductivity or resistance, the dielectric constant, and the proximity of the material to the sensor portion of the apparatus. The apparatus includes a fixed impedance element coupled in series with the sensor portion of the apparatus between an input signal and ground. The sensor portion of the apparatus is an electrode configuration which includes at least two electrodes with a portion of the material residing between and in close proximity to the electrodes. The sensor exhibits a variable impedance resulting from changes in physical characteristics of the material. The fixed impedance element and the variable impedance of the sensor portion form a voltage divider network such that changes in impedance of the sensor portion result in changes in voltage on the output of the apparatus. The variable impendance of the sensor portion relates to changes in property of the material being sensed which can then be related to changes in other physical characteristics of the material such as weight, chemical composition, and temperature.
Abstract:
An improved control structure for music synthesis is provided in which: 1) the sound generation provided to the adaptive function mapper (501) allows for a greatly increased degree of control over the sound produced; and 2) training of the adaptive function mapper (501) is performed using an error measure, or error norm, that greatly facilitates learning while ensuring perceptual identity of the produced sound with the training example. In one embodiment, sound data is produced by applying to an adaptive function mapper (501) control parameters including: at least one parameter selected from the set of time and timbre space coordinates; and one parameter from the set of pitch, delta pitch, articulation and dynamic. Mapping is performed from the control parameters to synthesis parameters to be applied to a sound synthesizer. In another embodiment, an adaptive function mapper (501) is trained to produce, in accordance with the information stored in a mapping store (503), synthesis parameters to be applied to a sound synthesizer, by steps including: analyzing sounds to produce sound parameters describing the sounds; further analyzing the sound parameters to produce control parameters; applying the control parameters to the adaptive function mapper (501), the adaptive function mapper (501) in response producing trial synthesis parameters comparable to the sound parameters; deriving from the sound parameters and the trail synthesis parameters an error measure in accordance with a perceptual error norm in which they are weighted in approximate degree to which they are perceived by the human ear; and adapting the information in the mapping store (503) with the error measure.
Abstract:
A device for adapting HART actuators or sensors to a local area network, including a first galvanic insulation stage (35), a filtering amplifier (36), a shaping discriminator (37), a modem (38) for restoring coded digital data, a programmed microcontroller (39) for translating messages into the local network language, an interface circuit (40) and a second galvanic insulation stage (41). A method for using said device is also disclosed.
Abstract:
A counting chamber (24) for neutron detection comprising an outer wall and an inner space for receiving an object to be tested (26). The wall consists of a first inner cadmium coating (32), an inner moderating layer (38), an intermediate cadmium coating (34), an outer moderating layer (40) and an outer cadmium layer (36).
Abstract:
A GPS-based frequency/time source of the present invention provides an accurate, traceable, low-cost reference. In particular, the GPS-based frequency/time source includes a GPS receiver (31), a variable frequency oscillator (35), and a microprocessor (33). The GPS receiver receives and produces as output signals GPS information, whereas the variable frequency oscillator has a frequency control input terminal and produces an output frequency signal, and is coupled to the GPS receiver. The microprocessor is coupled to receive the output signals produced by the GPS receiver and produces an error signal indicative of a difference in frequency between the GPS synchronized frequency and the output frequency signal of the variable frequency oscillator. Circuitry is responsive to the error signal to produce an electronic frequency control signal (37), which is applied to the frequency control input of the variable frequency oscillator so as to cause the difference in frequency to be reduced. In this manner, a low cost oscillator may be employed in such a way as to produce a very accurate output frequency signal.
Abstract:
A power control circuit for a device such as personal computer, including a laptop or notebook computer, which can conserve battery use, prevent power surges to promote longer battery charges and longer battery life, and can assure that circuitry is correctly biased. The power control circuitry of the present invention achieves these objectives by appropriately staggering the powering on of circuit components of the computer. A circuit for achieving these objectives may feature at least one memory (20, 22, 24) for storing power control state data and a multiplexer (15) for receiving the power control state data stored in the at least one memory (20, 22, 24). Further, a plurality of serially connected power control output circuits (21-30) connected to the multiplexer (15) output power control signals based on the power control state data stored in the at least one memory (20, 22, 24). A first of the plurality of serially connected power control output circuits (21-30) has a minimum delay and each succeeding of the plurality of serially connected power control output circuits (21-30) has an increasing delay.