Having Common Voice Coil Patents (Class 381/185)
  • Patent number: 11496840
    Abstract: Disclosed is a speaker unit for an earphone. The speaker unit includes a frame, a magnet, a plate fixed to the frame and coming into contact with the magnet, a diaphragm, a coil disposed to be radially overlapped with the magnet and the plate, and a flexible printed circuit board (FPCB). Here, the FPCB includes a first area fixed to the diaphragm, a second area connected to the frame, and a plurality of third areas configured to connect the first area to the second area. The third area includes a contact point connected to the coil. The third areas each include at least one bent area, and a space is disposed between the third areas adjacent to each other.
    Type: Grant
    Filed: February 18, 2021
    Date of Patent: November 8, 2022
    Assignee: ALMUS Corp.
    Inventors: Ju Heon Ko, Jong Won Lee, Byung Il Min, Yun Uk Ha, Jeong Kwon Park
  • Patent number: 11223897
    Abstract: The present invention discloses a sound producing device comprising a housing having a hollow cavity; a first sound producing membrane mounted on the housing, separating the hollow cavity into a first cavity and a second cavity; a main vibration component mounted in the second cavity, separating the second cavity into a main sound producing cavity and a mounting cavity; a first sound outlet hole and a second sound outlet hole in wall portions of the housing; and a driving mechanism in the second cavity. The driving mechanism drives the main vibration component to vibrate, and the vibration of the main vibration component drives the first sound producing membrane to vibrate through the air in the main sound producing cavity; the sound produced by the main vibration component mixes with the sound produced by the first sound producing membrane.
    Type: Grant
    Filed: November 23, 2018
    Date of Patent: January 11, 2022
    Assignee: Suzhou Yichuan Technology Co., LTD.
    Inventors: Xiaoming Chen, Zhe Wu
  • Patent number: 10979821
    Abstract: An embodiment of the present invention provides a sound generator having a frame; a magnetic circuit system fixed to the frame, and a vibration system. The magnetic circuit system includes a main magnet and an auxiliary magnet surrounding the main magnetic. The vibration system includes a vibrating diaphragm having a first vibrating diaphragm, a second vibrating diaphragm, and a dome for connecting the first vibrating diaphragm to the second vibrating diaphragm. A gap is formed between the auxiliary magnet and the frame. The dome has a body part, two first extension parts, and two second extension parts. The first extension part is located within the gap. Accordingly, the sound generator can solve the swing problem, and improve the low frequency performance.
    Type: Grant
    Filed: December 11, 2019
    Date of Patent: April 13, 2021
    Assignee: AAC Technologies Pte. Ltd.
    Inventors: Bo Xiao, Ronglin Linghu, Xiaodong Liu
  • Publication number: 20140169593
    Abstract: The present invention relates to a high-output microspeaker, and more particularly, to a high-output microspeaker which includes a damper for preventing lateral vibrations of a diaphragm.
    Type: Application
    Filed: May 10, 2012
    Publication date: June 19, 2014
    Applicant: EM-TECH. CO., LTD.
    Inventors: Joong Hak Kwon, Cheon Myeong Kim, Ji Hoon Kim, Kyu Dong Choi
  • Patent number: 8401209
    Abstract: A microphone includes a housing; a back volume within the housing; a diaphragm within the housing; a backplate attached to the housing; and a diaphragm ring connected to the diaphragm. The diaphragm ring has a body defined by an outer perimeter and at least a first inner perimeter and a second inner perimeter adjacent the first inner perimeter. The first inner perimeter is adjacent to a top surface of the diaphragm ring. The second inner perimeter is adjacent to the bottom surface of the diaphragm ring. The second inner perimeter is smaller than the first inner perimeter.
    Type: Grant
    Filed: April 22, 2010
    Date of Patent: March 19, 2013
    Assignee: Knowles Electronics, LLC
    Inventor: John Beard
  • Publication number: 20110116662
    Abstract: A speaker device includes a vibrating body including a diaphragm and a voice coil supported by a part of the diaphragm and a magnetic circuit including a first magnetic pole part having a magnet and a second magnetic pole part different from the first magnetic pole part and arranged spaced apart from the first magnetic pole part. The voice coil is arranged between the first magnetic pole part and the second magnetic pole part, the vibrating body includes a conducting part formed at a part or whole of the diaphragm, in the proximity of the voice coil, and the conducting part is arranged between the first magnetic pole part and the second magnetic pole part.
    Type: Application
    Filed: July 10, 2008
    Publication date: May 19, 2011
    Inventors: Kazuki Yuze, Hiroyuki Kobayashi, Koji Takayama, Akihiko Furuto, Shintaro Niidera, Toshihiro Hikichi
  • Publication number: 20110064230
    Abstract: The present invention relates to an apparatus and method for redeeming otherwise closed and concealed information contained in audio signals. This includes both the primary reference signal, and a plurality of redundant duplicate signals, substantially identical in all respects to the primary reference signal except in relation to magnitude and phase, for the purpose of unfolding, or opening the audio signal content into layers that result in an omni-directional acoustic signal, representing the sound as it would behave in nature. The audio reproduction system uses an in-phase circuit and a separate phase layering technique circuit to drive independent multiple mixed channels, to produce an open, substantially complete sound from a discrete audio signal, for the purpose of enabling a substantially complete audio signal to be formed, or to transform existing incomplete audio signals into a substantially complete audio signal.
    Type: Application
    Filed: September 11, 2009
    Publication date: March 17, 2011
    Inventor: Barry Stephen Goldfarb
  • Publication number: 20110007913
    Abstract: The present invention relates to a magnet assembly (1) for a transducer unit of the type having a moving membrane and having a voice coil arranged into said magnet assembly, said magnet assembly comprising the components i) a T-yoke (2); and ii) a magnet system (4); and iii) a top plate (6). The magnet assembly according to the invention has a specific design which provides for improved characteristics as to strength of B field in the gap between the top plate and the T-yoke, as well as to homogeneity of the B field in the gap and degree of symmetry in the roll-off behaviour of the B field in either axially direction of the gap.
    Type: Application
    Filed: January 6, 2009
    Publication date: January 13, 2011
    Applicant: SCANSPEAK A/S
    Inventor: Soren Steen Nielsen
  • Patent number: 7813698
    Abstract: A modular wireless headset includes wearable earpiece(s) and wearable microphone(s), where the earpiece and microphone may be physically separate devices. The wearable earpiece renders inbound radio frequencies received from a host device audible. The wearable earpiece may include a receiver module, data recovery module, and speaker module. The receiver module may convert inbound RF signals into low intermediate frequency (IF) signals. The data recovery module recovers audio signals from the low IF signals. The speaker module renders the audio signals audible. The wearable microphone converts received audio signals into outbound RF signals, where the outbound RF signals are transmitted to the host device. The wearable microphone includes an audio input module and a transmitter module. The audio input module is operably coupled to convert received analog audio signals into digital audio signals. The transmitter module is operably coupled to convert the digital audio signals into the outbound RF signals.
    Type: Grant
    Filed: January 15, 2009
    Date of Patent: October 12, 2010
    Assignee: Broadcom Corporation
    Inventors: Nambirajan Seshadri, James D. Bennett, Jeyhan Karaoguz
  • Publication number: 20030044031
    Abstract: Disclosed is a multi-function actuator comprising: a case having an internal space; a vibrating coil installed in the case for generating vibration; a diaphragm for generating sound with an outer end being fixed to the upper end of the case; a voice coil fixedly installed in the bottom of the diaphragm for generating sound according to a sound source and having an notch filter; a vertically magnetized magnet; an upper plated attached to the magnet for constituting a magnetic circuit; a yoke for constituting the magnetic circuit together with the magnet; a weight for constituting a vibrator body together with the magnet, the upper plate and the yoke; and a suspension spring for supporting the vibrator body. In generating sound, sound quality is improved without influencing sound while vibration is reduced.
    Type: Application
    Filed: November 12, 2001
    Publication date: March 6, 2003
    Inventor: Yeon Ho Son
  • Patent number: 6095278
    Abstract: A speaker base, which includes a tweeter holder having a holder base and a bottom mounting holder rod, and withholding ring mounted on the tweeter holder to hold a tweeter, wherein the tweeter holder has an axial center through hole through its holder base and bottom mounting holder rod through which the lead wires of the tweeter pass.
    Type: Grant
    Filed: April 28, 1999
    Date of Patent: August 1, 2000
    Inventor: Steff Lin
  • Patent number: 5471437
    Abstract: An electrodynamic transducer has a diaphragm substantially having two parts with different profiles, namely an acoustically active central part and an annular part laterally adjoining the central part and serving for the resilient suspension of the diaphragm in its entirety. A narrow coil seat for a wire coil of the transducer is located between the central part and the annular part. For the purpose of developing a compact yet electrodynamically sensitive acoustic transducer, the annular part is not arranged radially outside the central part of the diaphragm, but is shifted inward according to the invention. The curved annular part is thus accommodated under the axial curvature of the central part. The annular part can therefore have the annular width required for an ideal resilient suspension without negatively affecting the outer dimensions of the transducer.
    Type: Grant
    Filed: August 30, 1994
    Date of Patent: November 28, 1995
    Assignee: Sennheiser electronic KG
    Inventors: Ernst Schutter, Vladimir Gorelik
  • Patent number: 4914750
    Abstract: A sound transducer converts electrical signals into mechanical motion. A transducer comprises a transducer housing including a diaphragm section having an inner concave surface and an outer convex surface. A stem element projects outwardly from the diaphragm housing section and has a structural configuration effective to penetrate a panel or sounding board. A securing device is adapted to cooperate with the stem for connecting the diaphragm housing section to the sounding board. An electromagnetic driver assembly is resiliently mounted to the inner surface of the diaphragm housing section. The electromagnetic driver assembly includes an annular magnetic gap and a voice coil assembly located in the magnetic gap. The voice coil assembly includes a coil member having a cylindrical voice coil portion at one end thereof disposed in the magnetic gap and the other end thereof connected to the stem.
    Type: Grant
    Filed: July 13, 1987
    Date of Patent: April 3, 1990
    Assignee: AVM Hess, Inc.
    Inventor: William C. Lawson
  • Patent number: 4903308
    Abstract: An improved audio transducer includes a diaphragm having a pair of cylindrically-shaped webs that provide greater bandwidth, reduced distortion and greater horizontal dispersion of sound. The audio output of the transducer is further improved by forming the diaphragm of a polyvinyl fluoride film. Other improvements include the use of damping pads to damp internal sound waves and damping strips on the diaphragm to minimize distortion at the resonant frequency of the transducer.
    Type: Grant
    Filed: February 10, 1988
    Date of Patent: February 20, 1990
    Assignee: Linaeum Corporation
    Inventors: Paul W. Paddock, Steven R. Geist