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Patent Searching and Data


Matches 151 - 200 out of 2,000

Document Document Title
WO/2005/041590A1
The invention relates to arrays for rendering image and sound, more particularly, for reproducing spatial image and sound objects. According to the invention, the arrays comprise, for instance, an image reproducing array (1) in which par...  
WO/2005/036921A2
A virtual headset for enabling isolated listening to audio material by a listener without need for earphones or other physical audio producing devices attached to the listener. The virtual headset includes a parametric ultrasonic signal ...  
WO2003034778A3
The invention relates to an electroacoustic device with largest possible freedom from distortion and a quality control method for optimizing, setting and monitoring the freedom from distortion of said device. The linear and non-linear fr...  
WO/2004/077881A1
A thermally excited sound wave generating device comprising a thermally conductive substrate, a heat insulation layer formed on one surface of the substrate, and a heating element thin film formed on the heat insulation layer and in the ...  
WO2003049494A9
The present invention discloses an optical microphone. If a semiconductor laser light is projected on a diaphragm, the diaphragm vibrates according to external acoustic signals. Its variation is detected using light receiving element, th...  
WO2002087278A3
An optical microphone device which comprises an inverted, cup-shaped body including a top wall and at least one side wall and being at least partly made of transparent material; at least two lenses projecting from the lower surface of sa...  
WO2002076142A3
The invention provides a noise suppresson phantom power optical microphone system having an optical microphone consisting of a light source having an input terminal, a membrane and a photodetector having an outpout terminal, the system i...  
WO2003049491A3
A high frequency thermoacoustic energy converter (40) comprised of a resonator (42) that also functions as a housing for a electro-mechanical transducer (48), a stack (50) and a pair of heat exchangers (54, 56) positioned on opposite sid...  
WO2002047434A3
The invention provides an optical microphone system, including a microphone head including a light source, a light detector, a membrane having a first surface and a second surface and being responsive to sound pressure, the head being mo...  
WO/2004/001943A1
The invention refers to a tactile device provided with a number of fluid elements (1) containing an electrically conducting fluid (3, 4). The fluid level in each element is movable by actuator means (V, 6) applying a electric power to sa...  
WO2002076141A3
A magnetostrictive actuator comprises a rod (2) of giant magnetostrictive material, a biasing permanent magnet (4) arranged at each end thereof and coaxially therewith so as to pass a magnetic field through the rod, and an energising ele...  
WO2002082858A3
A sound and vision system comprising a display device (1) and an acoustic transducer means, such as a loudspeaker or a microphone. The display device includes display cells (9) having opposite electrodes (7, 8) and includes a conductive ...  
WO/2003/096223A1
The total DNAs of mutants of a biological species (for example, a tolerant strain, a tumor cell, a virus) to be sequences are taken out and shotgun libraries thereof are constructed. Then DNA fragments are taken out one by one from these...  
WO2003014774A3
A folded Sagnac fiber optic sensor array uses a common delay path to reduce distributed pickup in downlead fibers. The sensor array is used to detect perturbations (eg., acoustic waves in water). By basing the folded Sagnac sensor array ...  
WO/2003/092321A1
A sound focus speaker adopting a gas-filled sound lens enhances efficiency of transferring sound from a source to target area and of protecting a spread of transferred sound. The sound focus speaker includes a gas-filled sound lens, soun...  
WO2003047306A3
A transducer (90) comprising an acoustic energy generating means (24) and a resonator (14). The acoustic energy generating means generates acoustic energy in the frequency range of 0.4 to 2.0 MHz, and is adapted for delivering an approxi...  
WO2002080616A3
A lightwaveguide panel to be used with a a mobile telephone (MT) or personal digital assistant (PDA), the pannel comprises a first portion for lighting an LCD and/or a keyboard, and a second integral portion, said second portion includin...  
WO2002104067A3
An acoustic system has an acoustic sensor and a processing circuit. The acoustic sensor includes a base, a microphone having a microphone diaphragm supported by the base, and a hot-wire anemometer having a set of hot-wire extending membe...  
WO/2003/084285A1
Disclosed is a sound-to-vibration conversion apparatus, which comprises two magnets having N-pole and S-pole formed on one plane, the magnets being fixed to face each other in a housing; and an electromagnet, located between the two magn...  
WO/2003/081762A1
The invention describes devices for performing thermodynamic work on a fluid, such as pumps (340), compressors and fans. The thermodynamic work may be used to provide a driving force for moving the fluid. Work performed on the fluid may ...  
WO2003014674A3
A folded Sagnac fiber optic sensor array uses a common delay path to reduce distributed pickup in downlead fibers. The sensor array is used to detect perturbations (e.g., acoustic waves in water). By basing the folded Sagnac sensor array...  
WO/2003/056545A1
An electropneumatic acoustic horn (1; 100; 200) is disclosed, comprising an electric compressor unit (2) for generating compressed air and a sound wave generator (3) comprising at least an acoustic chamber (7, 8; 107, 108) associated to ...  
WO/2003/049491A2
A high frequency thermoacoustic energy converter (40) comprised of a resonator (42) that also functions as a housing for a electro-mechanical transducer (48), a stack (50) and a pair of heat exchangers (54, 56) positioned on opposite sid...  
WO/2003/049494A1
The present invention discloses an optical microphone. If a semiconductor laser light is projected on a diaphragm, the diaphragm vibrates according to external acoustic signals. Its variation is detected using light receiving element, th...  
WO/2003/046498A1
This invention relates to an optical displacement sensor element, e.g. for use in a pressure sensor or a microphone, comprising two essentially flat surfaces being separated by a cavity being defined by a spacer, the distance between the...  
WO/2003/047306A2
A transducer (90) comprising an acoustic energy generating means (24) and a resonator (14). The acoustic energy generating means generates acoustic energy in the frequency range of 0.4 to 2.0 MHz, and is adapted for delivering an approxi...  
WO/2003/043376A1
A diaphragm of a light−sound converter suitable for mass−production, small in size, and high in performance and the light−sound converter, the diaphragm wherein the arrangement and shape of a cantilever−like suspension are improv...  
WO/2003/043377A1
The invention relates an optical displacement sensor element comprising two essentially flat surfaces (1,2) being separated by a cavity defined by a spacer (5) and the surfaces (1,2), the distance between the surfaces being variable, whe...  
WO2002087279A3
A method for matching an acoustic load (6) and an acoustic driver (8) in a resonant acoustic system (10), and the acoustic system (10) so formed. The load (6) and driver (8) may be independently designed. The invention provides, inter al...  
WO/2003/034778A2
The invention relates to an electroacoustic device with largest possible freedom from distortion and a quality control method for optimizing, setting and monitoring the freedom from distortion of said device. The linear and non-linear fr...  
WO/2003/014774A2
A folded Sagnac fiber optic sensor array uses a common delay path to reduce distributed pickup in downlead fibers. The sensor array is used to detect perturbations (eg., acoustic waves in water). By basing the folded Sagnac sensor array ...  
WO/2003/014674A2
A folded Sagnac fiber optic sensor array uses a common delay path to reduce distributed pickup in downlead fibers. The sensor array is used to detect perturbations (e.g., acoustic waves in water). By basing the folded Sagnac sensor array...  
WO2001087009A3
This invention addresses a fundamental weakness in currently common microphones, and their applications in feedback for audio speaker systems. This limitation stems from the fundamental difficulties of typical membrane-type microphones i...  
WO2002034009A3
The invention provides a head for an optical microphone/sensor, including two spaced-apart, integrally interconnected, juxtaposed lightguides made of transparent, moldable material; a first of the lightguides including a light-admitting ...  
WO/2002/103294A1
Various sensors use an electro-active device (11) electrically connected to a detector circuit. The electro-active device (11) comprises an electro-active structure in the form of a continuous electro-active member (12) curving in a heli...  
WO/2002/104067A2
An acoustic system has an acoustic sensor and a processing circuit. The acoustic sensor includes a base, a microphone having a microphone diaphragm supported by the base, and a hot-wire anemometer having a set of hot-wire extending membe...  
WO/2002/104069A1
A diaphragm (1) of a light sound converter having a high performance, suitable for mass−production, and having a slit (1s) formed therein, wherein a light emitting element and a light receiving element are disposed at a position oppose...  
WO/2002/095342A1
Part of the (synthetic material) substrate (8) of a display is combined with a light source, e.g. a LED (14) and a photodetector (20) to be used as an optical microphone. A membrane (11) is formed which deforms due to air pressure fluctu...  
WO/2002/093773A1
A system for generating at least one remote virtual speaker location in connection with at least a partial reflective environment (12, 12, 14 or 15) in combination with an audio speaker for creating multiple sound effects including a vir...  
WO/2002/089523A1
The membrane (21) in an optical microphone is fixed to a body comprising both in-coupling means (11) and out-coupling means (17) for a light beam (23, 24), the intensity of which is influenced by vibrations of the membrane.  
WO/2002/087278A2
An optical microphone device which comprises an inverted, cup-shaped body including a top wall and at least one side wall and being at least partly made of transparent material; at least two lenses projecting from the lower surface of sa...  
WO/2002/087279A2
A method for matching an acoustic load (6) and an acoustic driver (8) in a resonant acoustic system (10), and the acoustic system (10) so formed. The load (6) and driver (8) may be independently designed. The invention provides, inter al...  
WO2001059852A9
The present invention relates to polymers, transducers and devices that convert between electrical and mechanical energy. When a voltage is applied to electrodes contacting an electroactive polymer, the polymer deflects. This deflection ...  
WO/2002/082858A2
A sound and vision system comprising a display device (1) and an acoustic transducer means, such as a loudspeaker or a microphone. The display device includes display cells (9) having opposite electrodes (7, 8) and includes a conductive ...  
WO/2002/080616A2
A lightwaveguide panel to be used with a a mobile telephone (MT) or personal digital assistant (PDA), the pannel comprises a first portion for lighting an LCD and/or a keyboard, and a second integral portion, said second portion includin...  
WO/2002/076142A2
The invention provides a noise suppresson phantom power optical microphone system having an optical microphone consisting of a light source having an input terminal, a membrane and a photodetector having an outpout terminal, the system i...  
WO/2002/076141A2
A magnetostrictive actuator comprises a rod (2) of giant magnetostrictive material, a biasing permanent magnet (4) arranged at each end thereof and coaxially therewith so as to pass a magnetic field through the rod, and an energising ele...  
WO2002037601A3
The invention provides a sound-propagation/antenna unit (6) for a cellular telephone (4), including a tubular element having a distal end (8), an intermediate portion (16) and a proximal end (12); the distal end (8) having a sound-admitt...  
WO/2002/066939A1
A displacement/quantity of light converter in which sensitivity to a micro displacement due to sound of a diaphragm, or the like, can be enhanced easily. In the displacement/quantity of light converter where a light emitting part (2) and...  
WO/2002/065812A1
A small photodetector type microphone (10) exhibiting excellent directivity without requiring any mirror face. A diaphragm (27) vibrates in response to a sound pressure. An optical waveguide (28) is formed along the diameter of the diaph...  

Matches 151 - 200 out of 2,000