Conductive Diaphragm (e.g., Reed, Ribbon) Patents (Class 381/176)
  • Patent number: 10536760
    Abstract: A microelectromechanical system includes a housing with an access opening and a sound transducer with a membrane and a backplate, wherein the sound transducer is coupled to the access opening. The microelectromechanical system includes a filter arranged between the access opening and the sound transducer and includes a filter material and a pretension element, the pretension element being mechanically connected to the filter material, and wherein the pretension element produces stress in the filter material in order to provide a bending deformation of the filter in a direction away from the backplate.
    Type: Grant
    Filed: January 7, 2019
    Date of Patent: January 14, 2020
    Assignee: INFINEON TECHNOLOGIES AG
    Inventor: Wolfgang Klein
  • Patent number: 10534242
    Abstract: An electronic apparatus includes a housing provided with an opening, a Micro Electro Mechanical System (MEMS) microphone disposed at a position directly under the opening and configured to collect sound through the opening, a light blocking member disposed at a position corresponding to a sound collection unit of the MEMS microphone between the opening and the MEMS microphone to prevent light from entering the MEMS microphone through the opening, and a waterproof member disposed in contact with the light blocking member and configured to close the opening to prevent water from entering the housing through the opening.
    Type: Grant
    Filed: October 16, 2018
    Date of Patent: January 14, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventor: Akira Tagaya
  • Patent number: 10405104
    Abstract: The invention includes a basic approach to simulate the workings of a ribbon microphone based on measurements at an array of more robust small pressure microphones. Embodiments of the invention take an array of microphone elements, either very small microphones that are placed on either side of a printed circuit board or some other device to understand the sound pressure differences from front to back and use those sound pressure differences to emulate the motion of a ribbon if a ribbon were co-located with the array of microphones. The microphone array detects differential pressure, either by a set of elements that that have figure of eight polar patterns, or by having separate elements front and back.
    Type: Grant
    Filed: September 1, 2011
    Date of Patent: September 3, 2019
    Inventor: Jonathan S. Abel
  • Patent number: 10299036
    Abstract: A multi-diaphragm planar magnetic electro-acoustic transducer is provided, having a plurality of diaphragms arranged in one or more diaphragm modules. Each diaphragm comprises a substrate and at least one electrically conductive circuit on at least one surface of the substrate. Each diaphragm module comprises at least one diaphragm, each held taut by a frame. Each diaphragm module is disposed to one side or the other of at least one planar magnetic array, the diaphragm module being parallel to and aligned with the planar magnetic array to form the multi-diaphragm planar magnetic transducer. The planar magnets many have a vertical arrangement, a sideways arrangement, a staggered arrangement, and may comprise stators and/or a low reluctance backing plate or channel piece. The planar magnet arrays can be linear or circular.
    Type: Grant
    Filed: March 15, 2018
    Date of Patent: May 21, 2019
    Assignee: Audeze, LLC
    Inventor: Dragoslav Colich
  • Patent number: 10291987
    Abstract: The present disclosure provides a vibration diaphragm. The vibration diaphragm includes a vibration part; a suspension extending from and surrounding the vibration part; and a pattern module part formed on the vibration part. The pattern module part includes a first protrusion, and a second protrusion bounded by the first protrusion. The first protrusion has a pair of first sides parallel to a long axis of the vibration diaphragm and a pair of second sides parallel to a short axis for connecting ends of the first sides. One of the second sides connects with the ends of the first sides via two arcs. By virtue of the configuration of the pattern module part, the solution described by the present embodiment increases the surface area of the vibration part, and widens the bandwidth of the vibration diaphragm, and further improves the acoustic performance of the diaphragm.
    Type: Grant
    Filed: December 4, 2017
    Date of Patent: May 14, 2019
    Assignee: AAC TECHNOLOGIES PTE. LTD.
    Inventors: Xiaojiang Gu, Lei Wang
  • Patent number: 10164632
    Abstract: A capacitor type tactile sensor and a method of manufacturing the capacitor type tactile sensor are provided. To elaborate, the device includes a first electrode, an active layer formed on a top surface of the first electrode, and a second electrode formed on a top surface of the active layer. The active layer is made of ionic elastomer, and a concentration of effective ions within the active layer is adjusted by an external pressure.
    Type: Grant
    Filed: August 29, 2016
    Date of Patent: December 25, 2018
    Assignees: SOONGSIL UNIVERSITY RESEARCH CONSORTIUM TECHNO-PARK, UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY
    Inventors: Do Hwan Kim, Hee Tae Jung, Sang Sik Park, Ming Liang Jin
  • Patent number: 9826304
    Abstract: A stereo microphone includes an omnidirectional microphone unit, a bidirectional side-channel microphone unit arranged to be perpendicular to a direction of a sound collecting axis outside the omnidirectional microphone unit, a right-channel microphone unit arranged to form a predetermined angle with respect to the side-channel microphone unit on a plane including the sound collecting axis outside the omnidirectional microphone unit, and a left-channel microphone unit arranged to form a predetermined angle with respect to the side-channel microphone unit and the right-channel microphone unit on the plane including the sound collecting axis outside the omnidirectional microphone unit.
    Type: Grant
    Filed: February 3, 2016
    Date of Patent: November 21, 2017
    Assignee: Kabushiki Kaisha Audio-Technica
    Inventor: Hiroshi Akino
  • Patent number: 9800979
    Abstract: A tunable ribbon microphone having magnets positioned within a small gap in between pieces of opposite poles. A conductive ribbon placed in an air gap between the magnets by an adjustable ribbon holder structure. The adjustable ribbon holder structure includes two ribbon holders and a ribbon tension control. The ribbon holder can be fixed from one side by sliding on one side or sliding on both sides. The ribbon tension control adjusts the tension of the elastic ribbon. By turning the ribbon tension control, turning motion translate to linear motion and change the distance between the ribbon holders and alter the tension of the ribbon. Changing the ribbon tension also possible by different ribbon tension control mechanism by rolled or folded the ribbon in one side or both side of the microphone. The tunable ribbon microphone may have more than one ribbon, adjustable ribbon holder structure and ribbon tension control.
    Type: Grant
    Filed: November 12, 2014
    Date of Patent: October 24, 2017
    Inventor: Mohsen Ghaffari
  • Patent number: 9730312
    Abstract: A method comprises mounting a grounding clip to a planar flexible printed circuit transmission line; clamping the grounding clip to an inner wall of a chassis of an electronic device; and operating a laser beam to weld the grounding clip to the chassis to route the flexible printed circuit transmission line along the inner wall. Welding the grounding clip to the chassis causes the grounding clip to remain in contact with the planar flexible printed circuit transmission line to ground the planar flexible printed circuit transmission line to the chassis.
    Type: Grant
    Filed: September 26, 2014
    Date of Patent: August 8, 2017
    Assignee: Nokia Technologies Oy
    Inventors: Romeo Dumpit, Rolf G. Laido, Mikko J. Timperi, Vincent Phan, Toni Kyroenlampi, Jani Haapamaki, Tim McGaffigan
  • Patent number: 9402137
    Abstract: A sound transducer includes a substrate with a cavity with extending from a first surface of the substrate, a body at least partially covering the cavity and being connected to the substrate by at least one resilient hinge, a first set of comb fingers mounted to the substrate, and a second set of comb fingers mounted to the body. The first set of comb fingers and the second set of comb fingers are interdigitated and configured to create an electrostatic force driving the body in a direction perpendicular to the first surface of the substrate. The body and the at least one resilient hinge are configured for a resonant or a near-resonant excitation by the electrostatic force.
    Type: Grant
    Filed: November 14, 2011
    Date of Patent: July 26, 2016
    Assignee: Infineon Technologies AG
    Inventors: Shu-Ting Hsu, Alfons Dehe
  • Patent number: 9025797
    Abstract: A ribbon microphone includes a ribbon microphone unit; an acoustic box for mounting a rear acoustic terminal of the ribbon microphone unit; a detective microphone mounted in the acoustic box, the detective microphone detecting sound waves identical to sound waves guided to the rear acoustic terminal of the ribbon microphone unit; a speaker comprising a diaphragm, the speaker being assembled in the acoustic box and varying the pressure in the acoustic box in response to the driven diaphragm; and a drive unit for driving the speaker so as to cancel a variation in pressure in the acoustic box in response to signals detected by the detective microphone, the variation being caused by sound waves guided to the rear acoustic terminal. This configuration extracts an omnidirectional component without an acoustic tube to achieve a small high-sensitivity unidirectional ribbon microphone and a unidirectional converter for the ribbon microphone.
    Type: Grant
    Filed: May 29, 2014
    Date of Patent: May 5, 2015
    Assignee: Kabushiki Kaisha Audio-Technica
    Inventor: Hiroshi Akino
  • Publication number: 20150110307
    Abstract: A condenser microphone includes a condenser microphone unit having a diaphragm and a fixed electrode disposed opposite to the diaphragm; a field effect transistor serving as an impedance converter; and a transistor to generate operational power for the field effect transistor; wherein the field effect transistor comprises a gate, a source and a drain, the gate is connected to the fixed electrode or the diaphragm, the diaphragm disposed opposite to the fixed electrode connected to the gate or the fixed electrode facing the diaphragm connected to the gate is grounded; the source is connected to a base of the transistor; the drain is connected to an emitter of the transistor; and a resistor establishing a base potential of the transistor is disposed between the base of the transistor and a ground.
    Type: Application
    Filed: August 22, 2014
    Publication date: April 23, 2015
    Applicant: Kabushiki Kaisha Audio-Technica
    Inventor: Hiroshi Akino
  • Publication number: 20150092964
    Abstract: Disclosed herein is a microphone including: a membrane; a fixed electrode part positioned at the outside of the membrane; and an elastic support part connecting the membrane and the fixed electrode part to each other so as to enable displacement of the membrane, wherein one surface of the membrane and one surface of the fixed electrode part facing each other are formed with conductive parts, respectively.
    Type: Application
    Filed: August 11, 2014
    Publication date: April 2, 2015
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Byung Hun Kim, Hwa Sun Lee
  • Patent number: 8995705
    Abstract: A multi-layer armature for a moving armature receiver. The armature includes a first armature layer and a displacement region. The first armature layer includes a first surface and a second armature layer having a second surface positioned adjacent to the first surface. The displacement region provides relative displacement between the armature layers.
    Type: Grant
    Filed: December 14, 2011
    Date of Patent: March 31, 2015
    Assignee: Sonion Nederland B.V.
    Inventors: Sietse Jacob van Reeuwijk, Theodorus Geradus Maria Brouwer, Adrianus Maria Lafort, Mikhail Joerjevitsj Korneev
  • Publication number: 20150086049
    Abstract: A receiver, the receiver includes a coil, a top assembly, a bottom assembly, and a flat planar armature. The flat planar armature includes an outer ring-like portion that forms a first opening. The flat planar armature further includes a central portion that extends from the outer ring-like portion into the opening. An end of the central portion is free to move in the presence of magnetic flux. The flat planar armature has a first end portion and a second end portion. The first end portion couples to the top assembly and the bottom assembly. The top assembly and the bottom assembly form a second opening that exposes the second end portion.
    Type: Application
    Filed: September 18, 2014
    Publication date: March 26, 2015
    Inventor: Mekell Jiles
  • Publication number: 20150036844
    Abstract: An acoustic apparatus includes a first acoustic element, a second acoustic element, and a registration portion. The first acoustic element and the second acoustic element are elements such as a coil, a reed, or a yoke. The registration portion is configured to register the first acoustic element with respect to the second acoustic element such that an exact and relative alignment and positioning between the first acoustic element and second acoustic element is provided and ensured.
    Type: Application
    Filed: September 11, 2014
    Publication date: February 5, 2015
    Inventors: Mekell Jiles, Matthew Mason, Phillip M. McCratic
  • Patent number: 8948422
    Abstract: A novel ribbon microphone incorporates rounded-edge magnet motor assembly, a backwave chamber, and a phantom-powered JFET circuit. In one embodiment of the invention, one or more novel rounded-edge magnets may be placed close to a ribbon of the ribbon microphone, wherein the one or more novel rounded-edge magnets reduce or minimize reflected sound wave interferences with the vibration of the ribbon during an operation of the ribbon microphone. Furthermore, in one embodiment of the invention, a novel backwave chamber operatively connected to a backside of the ribbon can minimize acoustic pressure, anomalies in frequency responses, and undesirable phase cancellation and doubling effects. Moreover, in one embodiment of the invention, a novel phantom-powered JFET preamplifier gain circuit can minimize undesirable sound distortions and reduce the cost of producing a conventional preamplifier gain circuit.
    Type: Grant
    Filed: April 1, 2013
    Date of Patent: February 3, 2015
    Assignee: Cloud Microphones, Inc.
    Inventors: Rodger Cloud, Stephen Sank
  • Patent number: 8948421
    Abstract: A ribbon microphone circuit includes a ribbon microphone unit; a step-up transformer; buffer amplifier circuits connected to a secondary winding of the step-up transformer; an external power supply circuit as a power source for driving the buffer amplifier circuits; and a switch circuit including photo-relays having lights that are turned on while the external power source is being supplied and having contacts operating depending on states of the respective lights, wherein signals output from the ribbon microphone unit are sent through the buffer amplifier circuits while the external power source is being supplied, and sent without passing through the buffer amplifier circuits while the external power source is being not supplied.
    Type: Grant
    Filed: November 14, 2011
    Date of Patent: February 3, 2015
    Assignee: Kabushiki Kaisha Audio-Technica
    Inventor: Hiroshi Akino
  • Publication number: 20140376752
    Abstract: A ribbon microphone includes a ribbon microphone unit; an acoustic box for mounting a rear acoustic terminal of the ribbon microphone unit; a detective microphone mounted in the acoustic box, the detective microphone detecting sound waves identical to sound waves guided to the rear acoustic terminal of the ribbon microphone unit; a speaker comprising a diaphragm, the speaker being assembled in the acoustic box and varying the pressure in the acoustic box in response to the driven diaphragm; and a drive unit for driving the speaker so as to cancel a variation in pressure in the acoustic box in response to signals detected by the detective microphone, the variation being caused by sound waves guided to the rear acoustic terminal. This configuration extracts an omnidirectional component without an acoustic tube to achieve a small high-sensitivity unidirectional ribbon microphone and a unidirectional converter for the ribbon microphone.
    Type: Application
    Filed: May 29, 2014
    Publication date: December 25, 2014
    Applicant: KABUSHIKI KAISHA AUDIO-TECHNICA
    Inventor: Hiroshi Akino
  • Patent number: 8879756
    Abstract: The present invention relates to a voice film having a multi-layered structure for a flat panel speaker, including a PCB configured to have permanent magnets disposed on the left and right sides thereof, to have a voice coil patterned therein and disposed between the permanent magnets on the left and right sides so that the voice coil is vibrated up and down, and to have a PCB structure of a stack structure and coil patterns formed on surfaces of the highest PCB, one or more intermediate layer PCBs, and the lowest PCB in the form of a consecutive spiral track, wherein the start points of coil patterns of adjacent PCBs formed in layers, from among the coil patterns, are shorted through a via hole and are bonded to the respective end points of the coil patterns of the adjacent PCBs at the end points of the coil patterns.
    Type: Grant
    Filed: June 7, 2011
    Date of Patent: November 4, 2014
    Assignee: Exelway Inc.
    Inventor: Dongman Kim
  • Patent number: 8837755
    Abstract: An acoustic apparatus includes a first acoustic element, a second acoustic element, and a registration portion. The first acoustic element and the second acoustic element are elements such as a coil, a reed, or a yoke. The registration portion is configured to register the first acoustic element with respect to the second acoustic element such that an exact and relative alignment and positioning between the first acoustic element and second acoustic element is provided and ensured.
    Type: Grant
    Filed: December 12, 2012
    Date of Patent: September 16, 2014
    Assignee: Knowles Electronics, LLC
    Inventors: Mekell Jiles, Matthew Mason, Phillip M McCratic
  • Patent number: 8824707
    Abstract: A micromachined microphone or speaker embedded within, or positioned on top of, a substrate suitable for carrying microelectronic chips and components. The acoustic element converts sound energy into electrical energy which is then amplified by electronic components positioned on the surface of the substrate. Alternatively, the acoustic element may be driven by electronics to produce sound. The substrate can be used in standard microelectronic packaging applications.
    Type: Grant
    Filed: December 29, 2011
    Date of Patent: September 2, 2014
    Assignee: The Regents of the University of California
    Inventors: Mark Bachman, Guann-Pyng Li Li
  • Patent number: 8811650
    Abstract: A ribbon transducer comprising a ribbon made of conductive material, two rigid supports where the ends of the ribbon are fixed, and a tensioning and damping system provided at least at one end of the conductive ribbon to tension the ribbon and damp its movements. The tensioning and damping system comprises a leaf spring comprising a first end section to which said ribbon is fixed and a second end section fixed to said rigid support, in such a way to exert a tensile force in the tensioning direction of the ribbon.
    Type: Grant
    Filed: March 2, 2012
    Date of Patent: August 19, 2014
    Assignee: Ask Industries Societa' per Azioni
    Inventor: Maurizio Servadio
  • Patent number: 8755556
    Abstract: Actuator apparatus comprising at least one moving elements, each comprising comb drive apparatus including at least first and second comb elements at least one of which is free to be in motion in a medium, and a controller controlling the motion responsive to an input signal representing a desired sound.
    Type: Grant
    Filed: October 1, 2009
    Date of Patent: June 17, 2014
    Assignee: Audio Pixels Ltd.
    Inventors: Yuval Cohen, Shay Kaplan, Daniel Lewin, Alex Sromin, Meir Ben Simon
  • Patent number: 8744099
    Abstract: A battery compartment for a condenser microphone includes a battery space configured to hold a battery; a battery outlet open to a portion of a peripheral wall of the battery space and allowing removal of the battery in the battery space; a lid covering the battery outlet; and a ribbon having one end portion fixed to an internal wall of the battery space and the other end portion disposed to be pulled out from the battery outlet and wrapping around an external periphery of the battery. The ribbon is conductive and the fixed end portion is grounded.
    Type: Grant
    Filed: May 24, 2011
    Date of Patent: June 3, 2014
    Assignee: Kabushiki Kaisha Audio-Technica
    Inventors: Noriko Matsui, Hiroshi Akino
  • Patent number: 8675898
    Abstract: To provide electromagnetic damping without a special output connector for protecting a diaphragm of metallic ribbon foil of a ribbon microphone against shocks. A ribbon microphone operable with a phantom power supply comprises: an acoustic-electric converter 1 including a pair of permanent magnets and a diaphragm of metallic ribbon foil; and a step-up transformer 110 coupled with the diaphragm on a primary winding 111 side and having, on a secondary winding 112 side, an output connector 120 removably connected to a phantom power supply, the step-up transformer 110 increasing a voltage generated by the diaphragm to a predetermined voltage, the voltage then being output to the phantom power supply side through the output connector 120, wherein a switch 141 is connected across the secondary winding 112, the switch 141 being normally closed and being opened by a power supplied from the phantom power supply.
    Type: Grant
    Filed: January 9, 2012
    Date of Patent: March 18, 2014
    Assignee: Kabushiki Kaisha Audio-Technica
    Inventor: Hiroshi Akino
  • Patent number: 8565453
    Abstract: A ribbon microphone unit includes a pair of magnets generating a magnetic field, a ribbon diaphragm disposed in the magnetic field generated by the magnets, and a circuit substrate provided with signal paths that conduct electrical signals generated by vibration of the ribbon diaphragm to output terminals. The signal paths are symmetrical about the longitudinal central axis of the ribbon diaphragm.
    Type: Grant
    Filed: April 15, 2011
    Date of Patent: October 22, 2013
    Assignee: Kabushiki Kaisha Audio-Technica
    Inventor: Hiroshi Akino
  • Patent number: 8542851
    Abstract: An acoustic sensor includes a semiconductor substrate with a back chamber, a conductive diaphragm arranged on an upper side of the semiconductor substrate, an insulating fixed film fixed on an upper surface of the semiconductor substrate covering the conductive diaphragm with a gap, a conductive fixed electrode film arranged on the insulating fixed film facing the diaphragm, an extraction wiring extracted from the conductive fixed electrode film, and an electrode pad to which the extraction wiring is connected. The acoustic sensor converts an acoustic vibration to change electrostatic capacitance between the conductive diaphragm and the conductive fixed electrode film. A plurality of acoustic perforations are opened in a back plate including the insulating fixed film and the conductive fixed electrode film. An opening rate of the plurality of acoustic perforations is smaller in the extraction wiring and a region in the vicinity thereof than in other regions.
    Type: Grant
    Filed: May 11, 2011
    Date of Patent: September 24, 2013
    Assignee: OMRON Corporation
    Inventor: Takashi Kasai
  • Publication number: 20130195292
    Abstract: An acoustic apparatus includes a first acoustic element, a second acoustic element, and a registration portion. The first acoustic element and the second acoustic element are elements such as a coil, a reed, or a yoke. The registration portion is configured to register the first acoustic element with respect to the second acoustic element such that an exact and relative alignment and positioning between the first acoustic element and second acoustic element is provided and ensured.
    Type: Application
    Filed: December 12, 2012
    Publication date: August 1, 2013
    Applicant: KNOWLES ELECTRONICS, LLC
    Inventor: Knowles Electronics, LLC
  • Publication number: 20130129119
    Abstract: A microphone unit (1) is provided with: a case (11), in which a diagram (contained in a MEMS chip (12)) that vibrates due to sound pressure, an internal space (111) that houses the diagram, and an opening (112) that links the internal space (111) to the outside and serves as a tone hole, are disposed; and a film (14) that is formed by a material that is not permeable to air, and that is joined to the base (11) in such a manner as to cover the opening (112). An internal pressure regulation section (141) is disposed in the film (14).
    Type: Application
    Filed: July 15, 2011
    Publication date: May 23, 2013
    Applicant: FUNAI ELECTRIC CO., LTD.
    Inventors: Kenshou Miyatake, Ryusuke Horibe
  • Patent number: 8442243
    Abstract: A ribbon microphone includes two magnets spaced in parallel and generating a magnetic field therebetween, two ribbon diaphragms arranged in parallel at a predetermined distance in the magnetic field, and a step-up transformer raising the voltages of electric signals generated in response to vibrations of the ribbon diaphragms in the magnetic field and outputs the raised electric signals. The step-up transformer includes two primary windings and two secondary windings corresponding to the two ribbon diaphragms, one of the two ribbon diaphragms and one of the two primary windings of the step-up transformer are connected in parallel whereas the others are connected in parallel, and the two secondary windings of the step-up transformer are connected in series so as to have opposite polarities. The ribbon microphone exhibits enhanced shielding effect without shielding a step-up transformer and does not generate noise caused by electromagnetic induction.
    Type: Grant
    Filed: January 25, 2011
    Date of Patent: May 14, 2013
    Assignee: Kabushiki Kaisha Audio-Technica
    Inventor: Hiroshi Akino
  • Patent number: 8422728
    Abstract: An electromagnetic converter includes a magnetic circuit having permanent magnets, a lower frame for fixing magnetic pole faces of these permanent magnets thereto, an upper frame having an opening formed therein on a side of the other magnetic pole faces of the permanent magnets and plates fixed to the other magnetic pole faces, and a diaphragm having a voice coil pattern arranged on side portions thereof in a direction of the length thereof and on a top portion thereof in a direction of the width thereof. Protruding portions join between these side portions. The periphery of the top portion is joined to the periphery of the opening of the upper frame via an upper gasket. A flange at the edges of the four side portions is joined to an inner surface of the upper frame, i.e., an inner portion of the magnetic circuit via a lower gasket.
    Type: Grant
    Filed: December 14, 2010
    Date of Patent: April 16, 2013
    Assignee: Mitsubhishi Electric Engineering Company, Limited
    Inventor: Shunji Yoshida
  • Patent number: 8406451
    Abstract: There is provided a capacitive electro-acoustic transducer comprising an active diaphragm (20) and a first and a second diaphragm carrier (60). The active diaphragm (20) is accommodated between the first and second diaphragm carriers (60). The first and second diaphragm carriers (60) each have a respective flat electrode (30). The diaphragm carrier and the electrode are connected together in such a way that the diaphragm carrier projects beyond the electrode by a predetermined amount.
    Type: Grant
    Filed: March 3, 2008
    Date of Patent: March 26, 2013
    Assignee: Sennheiser electronic GmbH & Co. KG
    Inventors: Lars Heine, Raimund Staat, Claus-Peter Hinke
  • Patent number: 8389349
    Abstract: A method of manufacturing a capacitive transducer by applying a first etching mask on a layer. Applying a second etching mask to define the movable set of fingers, the fixed set of fingers, a body, and springs, and the body is connected to the movable set of fingers and the springs while the movable set of fingers are interdigitated with the fixed set of fingers. Etching the layer and the first etching mask using the second etching mask and removing the second etching mask. Etching the layer such that one of the movable set of fingers and the fixed set of fingers is shorter than the other of the movable set of fingers and the fixed set of fingers. Releasing the body, the springs, and the movable set of fingers using etching, such that, upon applying a force to the body, the body moves parallel to the substrate.
    Type: Grant
    Filed: April 23, 2012
    Date of Patent: March 5, 2013
    Inventor: Tiansheng Zhou
  • Patent number: 8379881
    Abstract: A silicon based capacitive microphone includes a first printed circuit board, a second printed circuit board far away from the first printed circuit board, a transducer electrically mounted on the first printed circuit board, a controlling chip electrically mounted on the second printed circuit board, a connecting member located between the first and second printed circuit boards.
    Type: Grant
    Filed: November 27, 2009
    Date of Patent: February 19, 2013
    Assignees: AAC Acoustic Technologies (Shenzhen) Co. Ltd., American Audio Components Inc.
    Inventors: Zhi-Jiang Wu, Yong-Ze Su
  • Patent number: 8351625
    Abstract: Provided is an acoustic sensor capable of improving an S/N ratio of a sensor without preventing reduction in size of the sensor. A back chamber 45 is vertically opened in a silicon substrate 42. A thin film-like diaphragm 43 to serve as a movable electrode plate is formed on the top surface of the substrate 42 so as to cover the back chamber 45. The back plate 48 is fixed to the top surface of the substrate 42 so as to cover the diaphragm 43, and a fixed electrode plate 49 is provided on the under surface of the back plate 48. Further, the diaphragm 43 is divided into a plurality of areas by the slit 47, and the respective plurally divided diaphragms 43a, 43b and the fixed electrode plate 49 constitute a plurality of parallelly connected capacitors (acoustic sensing sections 60a, 60b).
    Type: Grant
    Filed: March 16, 2011
    Date of Patent: January 8, 2013
    Assignee: OMRON Corporation
    Inventor: Takashi Kasai
  • Patent number: 8345897
    Abstract: There is provided: first to fourth magnetic pole yokes 13-16 magnetized by the magnets 11, 12 having both poles on these opposite faces to establish a magnetic pole; and a vibrating membrane 17 disposed between the magnets 11, 12 and electromagnetically coupled to the yokes 13-16 by energizing a meandering coil pattern 17b thereon to vibrate in a predetermined direction. The yokes 13-16 include: abutting sections 13a-16a to be magnetized with abutting against the magnets 11, 12, and magnetic pole sections 13b-16b establishing the magnetic pole in a band shape. The sections 13b-16b each are disposed on the upper and lower sides of the vibrating membrane 17, and disposed with a gap (sound emitting hole 19) such that the magnetic poles different in magnetic polarity are positioned alternately in the lateral direction of the membrane 17 to form magnetic pole faces on the upper and lower sides thereof.
    Type: Grant
    Filed: March 31, 2008
    Date of Patent: January 1, 2013
    Assignee: Mitsubishi Electric Engineering Co., Ltd
    Inventors: Masanori Takahashi, Kiyofumi Mori
  • Patent number: 8331588
    Abstract: A ribbon microphone unit includes a permanent magnet that forms a magnetic field and a ribbon diaphragm that is disposed in the magnetic field and vibrates upon receiving a sound wave. An elastic layer made of synthetic resin is formed at least at a portion of the ribbon diaphragm, the portion vibrating upon receiving the sound wave. Preferably, the ribbon diaphragm is formed into triangular waves with the portion vibrating upon receiving sound waves being alternately folded along lines in a width direction across the entire length. The elastic layer may be formed on one or both surfaces of the ribbon diaphragm and may be provided only at both side ends of the ribbon diaphragm.
    Type: Grant
    Filed: July 27, 2010
    Date of Patent: December 11, 2012
    Assignee: Kabushiki Kaisha Audio-Technica
    Inventor: Hiroshi Akino
  • Patent number: 8275157
    Abstract: A ribbon microphone unit includes: an electrode lead portion for conducting an electric signal which a ribbon diaphragm generates cooperating with a magnet; a tightening member for securing the ribbon diaphragm; and a screw for crimping the tightening member, wherein the tightening member is crimped via the ribbon diaphragm and the electrode lead portion by the screw, and wherein the ribbon diaphragm includes a portion sandwiched by the tightening member, and the portion is formed in an irregular shape in the thickness direction.
    Type: Grant
    Filed: November 24, 2008
    Date of Patent: September 25, 2012
    Assignee: Kabushiki Kaisha Audio-Technica
    Inventor: Hiroshi Akino
  • Patent number: 8275156
    Abstract: To obtain a ribbon microphone unit, which makes the tension of a diaphragm adjustable by configuring a ribbon diaphragm assembly that is detachable to a magnetic-circuit assembly including a magnet, and which further allows a user side to carry out the maintenance by replacing the ribbon diaphragm assembly; a ribbon microphone unit comprises: a magnetic-circuit assembly including a magnet; and a ribbon diaphragm, wherein the ribbon diaphragm, together with a substrate having a circuit pattern formed on both ends thereof, a metal fitting for crimping an end portion of the ribbon diaphragm to the circuit pattern, and a screw for crimping the metal fitting toward the substrate, constitute a diaphragm assembly, and wherein the diaphragm assembly is secured to the magnetic-circuit assembly.
    Type: Grant
    Filed: November 5, 2008
    Date of Patent: September 25, 2012
    Assignee: Kabushiki Kaisha Audio-Technica
    Inventor: Hiroshi Akino
  • Publication number: 20120224727
    Abstract: A ribbon transducer comprising a ribbon made of conductive material, two rigid supports where the ends of the ribbon are fixed, and a tensioning and damping system provided at least at one end of the conductive ribbon to tension the ribbon and damp its movements. The tensioning and damping system comprises a leaf spring comprising a first end section to which said ribbon is fixed and a second end section fixed to said rigid support, in such a way to exert a tensile force in the tensioning direction of the ribbon.
    Type: Application
    Filed: March 2, 2012
    Publication date: September 6, 2012
    Applicant: ASK INDUSTRIES SOCIETA' PER AZIONI
    Inventor: Maurizio SERVADIO
  • Patent number: 8238587
    Abstract: The present invention provides an electret condenser microphone including a diaphragm, a frame adapted to affix the diaphragm to, and a backplate positionable inside the frame and opposite the diaphragm with a space reserved therebetween.
    Type: Grant
    Filed: March 20, 2009
    Date of Patent: August 7, 2012
    Assignee: Hosiden Corporation
    Inventors: Hideo Yuasa, Hidenori Motonaga
  • Publication number: 20120189145
    Abstract: To provide electromagnetic damping without a special output connector for protecting a diaphragm of metallic ribbon foil of a ribbon microphone against shocks. A ribbon microphone operable with a phantom power supply comprises: an acoustic-electric converter 1 including a pair of permanent magnets and a diaphragm of metallic ribbon foil; and a step-up transformer 110 coupled with the diaphragm on a primary winding 111 side and having, on a secondary winding 112 side, an output connector 120 removably connected to a phantom power supply, the step-up transformer 110 increasing a voltage generated by the diaphragm to a predetermined voltage, the voltage then being output to the phantom power supply side through the output connector 120, wherein a switch 141 is connected across the secondary winding 112, the switch 141 being normally closed and being opened by a power supplied from the phantom power supply.
    Type: Application
    Filed: January 9, 2012
    Publication date: July 26, 2012
    Applicant: KABUSHIKI KAISHA AUDIO-TECHNICA
    Inventor: Hiroshi AKINO
  • Patent number: 8218796
    Abstract: A microphone unit includes a substrate. The substrate includes a first face formed with a first recess, a second face opposite to the first face, and a through hole communicating the second face to a bottom part of the first recess. A diaphragm unit includes a diaphragm, and at least a part of which is disposed in the first recess so that the diaphragm opposes the through hole.
    Type: Grant
    Filed: April 30, 2009
    Date of Patent: July 10, 2012
    Assignees: Funai Electric Advanced Applied Technology Research Institute Inc., Funai Electric Co., Ltd.
    Inventors: Fuminori Tanaka, Ryusuke Horibe, Takeshi Inoda, Rikuo Takano, Kiyoshi Sugiyama, Toshimi Fukuoka, Masatoshi Ono
  • Patent number: 8218795
    Abstract: A geometrically shaped acoustic polymer ribbon with shape memory, high conductivity, high toughness. A method of manufacturing the ribbon comprises: forming a sized, elongated, coated or coatable polymeric substrate film between a pair of opposed, geometrically shaped dies, pinching the dies about the polymeric substrate film to form an assembly, heating the dies and the pinched die and polymeric film assembly to a temperature of at about 300 degrees F. for a period of about 15 minutes to set the elongated film into a predetermined geometric pattern, cooling the assembly, removing the film from the dies; and if not already coated, coating the geometrically formed, set, elongated film with a conductive coating.
    Type: Grant
    Filed: March 16, 2007
    Date of Patent: July 10, 2012
    Assignee: Shure Incorporated
    Inventors: Hugh A. Tripp, Robert J. Crowley
  • Publication number: 20120121110
    Abstract: A ribbon microphone circuit includes a ribbon microphone unit; a step-up transformer; buffer amplifier circuits connected to a secondary winding of the step-up transformer; an external power supply circuit as a power source for driving the buffer amplifier circuits; and a switch circuit including photo-relays having lights that are turned on while the external power source is being supplied and having contacts operating depending on states of the respective lights, wherein signals output from the ribbon microphone unit are sent through the buffer amplifier circuits while the external power source is being supplied, and sent without passing through the buffer amplifier circuits while the external power source is being not supplied.
    Type: Application
    Filed: November 14, 2011
    Publication date: May 17, 2012
    Inventor: Hiroshi Akino
  • Patent number: 8165323
    Abstract: A capacitive transducer includes a substrate having a first surface and a second surface. The first surface of the substrate defines a first plane. The substrate has a cavity with an interior peripheral edge. The cavity extends between the first surface and the second surface. A body is provided that has an exterior peripheral edge. The body is parallel to the first plane and at least partially blocking the cavity. The body is connected to the substrate by resilient hinges such that, upon the application of a force, the body moves perpendicular to the first plane. A first set of comb fingers is mounted to the substrate. The first set of comb fingers is connected to a first electrical connection. A second set of comb fingers is mounted to the body and extends past the exterior peripheral edge of the body. The second set of comb fingers is connected to a second electrical connection that is isolated from the first connection.
    Type: Grant
    Filed: November 28, 2007
    Date of Patent: April 24, 2012
    Inventor: Tiansheng Zhou
  • Patent number: 8130979
    Abstract: A microphone system has a base coupled with first and second microphone apparatuses. The first microphone apparatus is capable of producing a first output signal having a noise component, while the second microphone apparatus is capable of producing a second output signal. The system also has combining logic operatively coupled with the first microphone apparatus and the second microphone apparatus. The combining logic uses the second output signal to remove at least a portion of the noise component from the first output signal.
    Type: Grant
    Filed: July 25, 2006
    Date of Patent: March 6, 2012
    Assignee: Analog Devices, Inc.
    Inventors: Kieran P. Harney, Jason Weigold, Gary Elko
  • Patent number: 8107649
    Abstract: A ribbon for a ribbon microphone having a magnet forming a magnetic gap, the ribbon which is arranged in the magnetic gap and is vibrated by a sound wave, an electrode for outputting an electric signal which is generated when the ribbon vibrates in the magnetic gap, and a frame for holding the magnet and the electrode; the ribbon has patterns of a large waveform which are formed so as to progress in a longitudinal direction of the ribbon and are formed so that ridge lines face a direction which perpendicularly crosses the longitudinal direction of the ribbon, and small patterns which are smaller than the patterns of the waveform and are formed along the longitudinal direction of the ribbon.
    Type: Grant
    Filed: February 12, 2009
    Date of Patent: January 31, 2012
    Assignee: Kabushiki Kaisha Audio-Technica
    Inventor: Hiroshi Akino
  • Patent number: 8090125
    Abstract: A contact type electret condenser pickup to deliver high anti noise, top talking quality, and comprehensive range of applications includes a casing provided with an accommodation chamber to contain an O-ring, a vibration part, an insulation packing, a back plate retaining ring containing a back plate, a conductive connection ring, and a circuit board horizontally placed in sequence; vibration of a sound of a user is transmitted to the vibration part; then an inertia vibration of the metal sheet changes capacitance between the vibration part and the back plate; the changed vibration is converted through the circuit board set into voltage of alternating signals for output variable according to changes of vibration.
    Type: Grant
    Filed: August 17, 2007
    Date of Patent: January 3, 2012
    Assignee: Transound Electronics Co., Ltd.
    Inventors: Hu-Ming Zheng, Zhi-Jian He, Yi Ouyang