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| Number | Title | Issue Date |
| 8077885 | Microphone device A microphone device includes an enclosure, a nontransparent supporter, a light source, an annular-shaped optical sensor, a lens and a vibrating membrane. The enclosure has a bottom portion and a sidewall extending from the bottom portion. An opening is defined in th... | 12/13/2011 |
| 8023669 | Shielded communication transducer A system and method for detecting a sound originating from a body and enhancing signal-to-noise ratio with respect to noise originated outside the body is disclosed. The system comprises a light source for producing a quasi-monochromatic, spatially-coherent light be... | 09/20/2011 |
| 7894618 | Apparatus comprising a directionality-enhanced acoustic sensor An apparatus and method for discriminating a directional component of a propagating pressure wave using an array of operatively-coupled displacement sensors are disclosed. In accordance with the illustrative embodiment, each displacement sensor in the array comprise... | 02/22/2011 |
| 7826629 | Optical sensing in a directional MEMS microphone A microphone having an optical component for converting the sound-induced motion of the diaphragm into an electronic signal using a diffraction grating. The microphone with inter-digitated fingers is fabricated on a silicon substrate using a combination of surface a... | 11/02/2010 |
| 7769192 | Speaker system with oscillation detection unit A speaker system comprising a magnetic circuit, a cylindrical shaped voice coil unit generating oscillation in the magnetic circuit, an oscillating plate extending in a circular conical shape from a outer peripheral surface of the voice coil unit, a dust cap connect... | 08/03/2010 |
| 7711130 | Hearing aid with an optical microphone A hearing aid is provided. The hearing aid includes at least one optical microphone. The at least one optical microphone comprises an acoustic-optical transformer for transforming an acoustic input signal into an optical signal, the optical signal is processed in th... | 05/04/2010 |
| 7668322 | Device for detecting pressure fluctuations, display device, recording device and sound reproduction system 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 fluctua... | 02/23/2010 |
| 7580533 | Particulate flow detection microphone Gas containing particles or droplets flowing continuously through a microphone is perturbed by sound waves. Sound-induced localized pressure changes in the gas are measured by detecting variations in gas opacity with an optical transducer disposed transverse to the ... | 08/25/2009 |
| 7391976 | Optical acoustoelectric transducer An optical acoustoelectric transducer having a directivity pattern like a better 8 by receiving by a light-receiving element a reflected fraction of the light from a light-emitting device disposed at the center of a bottom plate that is parallel to a diaphrag... | 06/24/2008 |
| 7366767 | Dictation system employing computer-to-computer transmission of voice files controlled by hand microphone A dictation system is formed of two personal computers connected by an e-mail system. A hand microphone with control switches is provided at one personal computer and a foot pedal is provided at the other personal computer. The hand microphone is used to generate a ... | 04/29/2008 |
| 7359523 | Fluidic acoustic transducer Sound signals are detected. Light signals are generated that pass through a membrane of a bubble within a trench. The sound signals cause deformations within the membrane of the bubble. The light signals are detected after the light signals have passed through the m... | 04/15/2008 |
| 7319762 | Headset with flashing light emitting diodes A headphone system is provided with two earbud headphones and a control module, each fitted with a plurality of light emitting diodes (LEDs). The LEDs may be of many different colors and flash to the beat of the music. Patterns, colors, and intensity may be adjusted... | 01/15/2008 |
| 7221875 | Diaphragm structure of light-sound converter An optical-acoustic transducer in which light is irradiated to a reflecting portion from a light emitter, and a reflected light from the reflecting portion is received with a light receiver to detect a position of a vibrating section, cantilevers are formed by perfo... | 05/22/2007 |
| 7072475 | Optically coupled headset and microphone Apparatus and methods for transferring audio between a headset and electronic equipment over an optical link. The apparatus includes an electro-optical interface for electrically connecting to the electronic equipment, an optical link, and an electro-optical headset... | 07/04/2006 |
| 7062059 | Multi-function microphone boom with on-line indicator A headset microphone boom that includes a hollow tubular member with a reflective interior surface. A light disperser is coupled to the hollow tubular member at one end and a light emitting device is coupled to the hollow tubular member at the other end. Light is tr... | 06/13/2006 |
| 7058190 | Acoustic signal enhancement system System and method for automatically measuring and monitoring the quality of acoustic data is disclosed. The system also provides suggestions for corrective actions to the system or user. The method monitors the quality of data and provides feedback to the system or ... | 06/06/2006 |
| 7026654 | Package for optical semiconductor To provide a package for an optical semiconductor having a light-emitting device and a light-receiving device in one package, in which a groove is provided between the light-emitting device and the light-receiving device to thereby avoid rays of light from the light... | 04/11/2006 |
| 6990209 | High directivity microphone array A microphone array for providing a focused field of optimum audio reception is disclosed. The array has a series of interconnected microphones spaced within a housing. At a midpoint of the spaced microphones is an illuminated polarized centering marker which gives t... | 01/24/2006 |
| 6973379 | Continuously variable transmission control apparatus A theoretical torque transmitted through a belt is calculated, and a first guaranteed torque is calculated by adding a marginal torque to the theoretical torque. In step S101, the theoretical torque is multiplied by a safety factor, calculating a second guara... | 12/06/2005 |
| 6959095 | Method and apparatus for providing multiple output channels in a microphone Methods and apparatus for providing multiple output channels in a microphone. More particularly, provision is made for an arrangement wherein a single microphone is adapted to produce one or more different audio outputs depending upon characteristics of a speaker or... | 10/25/2005 |
| 6906807 | Membrane type optical transducers particularly useful as optical microphones An optical transducer includes a housing containing a light source and a light detector laterally spaced from the light source; and a deformable membrane mounted over the light source and light detector such that an inner surface of the membrane reflects light from ... | 06/14/2005 |
| 6904405 | Message recognition using shared language model Certain disclosed methods and systems perform multiple different types of message recognition using a shared language model. Message recognition of a first type is performed responsive to a first type of message input (e.g., speech), to provide text data in accordan... | 06/07/2005 |
| 6865335 | Optical microphone for communication and other devices 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 including a first inclined surface fo... | 03/08/2005 |
| 6694031 | Optical microphone/sensors The invention provides a head for an optical microphone/sensor, including first and second light guides; the first light guide being coupled at an input end to a source of light and having an output end portion for transmitting light onto a membrane; the ... | 02/17/2004 |
| 6690804 | Lighted microphone cable indicator A lighting apparatus for use with a microphone and a sound mixing system wherein each microphone has an associated channel located in the sound mixing system. Each microphone has a lighting means that assigns a particular color to that particular micropho... | 02/10/2004 |
| 6549631 | Pressure transducing assembly A pressure tranducing assembly for converting received pressure into a digital pressure signal. A pressure transmitter adapted to receive a first mechanical pressure from an environment and to transmit that pressure to a pressure processor. The pressure p... | 04/15/2003 |
| 6522761 | Directionally sensitive pointing microphone A microphone apparatus which includes a directional microphone having an axis of sensitivity along which the directional microphone is sensitive to sound. A light source is mechanically coupled to the directional microphone to produce a beam of light in a... | 02/18/2003 |
| 6498853 | Echo-cancelling optical microphone The invention provides an echo-cancelling system for an optical microphone, for eliminating acoustical echoes from a source of acoustical signals to which the microphone is connected, the system including a source of light for illuminating the acoustical ... | 12/24/2002 |
| 6493451 | Communication helmet A communication helmet having an enhanced noise reduction effect. The communication helmet incorporates a microphone disposed in the vicinity of the mouth of the speaker wearing the helmet. The microphone is an optical microphone comprising a diaphragm (3... | 12/10/2002 |
| 6459798 | Sound-collecting device A device for collecting sounds from objects comprises a plurality of microphones whose directivity can be varied depending on the environment in which each object is located. An optical microphone includes a vibration board (2) which vibrates by sound pre... | 10/01/2002 |
| 6154551 | Microphone having linear optical transducers Microphone having linear optical transducers. The present invention includes the use of linear optical transducers in several configurations to detect the motion of one or more conventional microphone diaphragms in proportional response to incident acoust... | 11/28/2000 |
| 6081604 | Electric sound converter A head-phone having a case member storing therein a headphone unit, wherein a coating film containing a light discolor pigment to be discolored by irradiation of sun light is provided on the whole surface or a predetermined surface of the case member.... | 06/27/2000 |
| 6072882 | Method and apparatus for sensing an audio signal that is sensitive to the audio signal and insensitive to background noise A method and apparatus for sensing audio frequency-pressure modulation of the moisture content of the atmosphere caused by a moisture-laden audio source, such as a live human voice, is disclosed. A first light emitter is provided to generate a first light... | 06/06/2000 |
| 6055080 | Optical microphone In an optical microphone including a light source, a fiber optic cable and a Fabry-Perot interferometer with two reflectors, wherein one end face of the fiber optic cable forms a first reflector and the second reflector is arranged at a distance therefrom... | 04/25/2000 |
| 6014239 | Optical microphone An optical microphone includes a laser and beam splitter cooperating therewith for splitting a laser beam into a reference beam and a signal beam. A reflecting sensor receives the signal beam and reflects it in a plurality of reflections through sound pre... | 01/11/2000 |
| 5995260 | Sound transducer and method having light detector for detecting displacement of transducer diaphragm Transducer circuitry, and an associated method, converts acoustic signals into electrical signals. The transducer circuitry includes a diaphragm which is positioned to receive acoustic signals, such as voice signals. Displacement of the diaphragm responsi... | 11/30/1999 |
| 5818949 | Microphone with infared on/off switch A microphone including an infrared switch circuit is disclosed. The infrared switch circuit includes an infrared detector for detecting a reflection of an infrared signal off an object such as a human body, and producing an electrical signal. The circuit ... | 10/06/1998 |
| 5815298 | System and method for wirelessly communicating a sound signal A system for communicating a signal representing the amplitude of a sound signal received at a remotely located transceiver via an optical airlink communication network, the system having an optical transceiver, including an optical receiver and an optica... | 09/29/1998 |
| 5757530 | Signal transmitter with automatic output control and systems utilizing the same Described are apparatus for transmitting light wave signals, the apparatus being capable of adjusting their signal strength to automatically adapt to changes in the ambient light conditions of their surrounding environment. In one embodiment, the apparatu... | 05/26/1998 |
| 5621806 | Apparatus and methods for determining the relative displacement of an object A microphone is disclosed which converts an audio signal directly into a digital representation by analyzing and digitizing the distortion imposed upon a signal, such as a string of regularly spaced pulses as a result of the displacement of a diaphragm, r... | 04/15/1997 |
