Diaphragm, speaker unit using same, headphones, and earphones

    公开(公告)号:US10897673B2

    公开(公告)日:2021-01-19

    申请号:US16587387

    申请日:2019-09-30

    申请人: Onkyo Corporation

    发明人: Takeshi Fujitani

    摘要: Displacement symmetry of a diaphragm is improved to prevent the occurrence of troubles such as diaphragm rolling or the occurrence of abnormal noise, thereby providing high reproduced sound quality. The diaphragm includes an annular edge portion having a convex radial cross section formed by molding a sheet-like member or a film-like member. The edge portion has a plurality of rotationally symmetrical recessed ribs formed by recessing a convex surface. The plurality of recessed ribs includes at least a first rib disposed along a first prescribed line intersecting, at an angle of 45°, a first radial line passing a center point, and a second rib arranged in a position not intersecting but adjacent to the first rib and disposed along a second prescribed line intersecting the second radial line at a predetermined angle of less than 45°.

    Diaphragm or dust cap and speaker unit

    公开(公告)号:US10805732B2

    公开(公告)日:2020-10-13

    申请号:US16531095

    申请日:2019-08-04

    申请人: Onkyo Corporation

    IPC分类号: H04R9/06 H04R7/12 H04R9/02

    摘要: There is provided a diaphragm or a dust cap configured to emit a sound wave and an electrodynamic speaker unit including the diaphragm or the dust cap. The speaker unit is configured so that a great peak dip of sound pressure frequency characteristics due to influence of a divided vibration mode can be prevented and excellent reproduced sound quality can be provided. In the diaphragm or the dust cap, a recessed-raised portion imitating a wing of an insect is formed at least on one surface of a diaphragm portion configured to emit a sound wave. Preferably, the recessed-raised portion is formed based on data obtained by measurement of an actual shape of a wing vein of the insect or data of a Voronoi diagram imitating the wing vein of the insect.

    Firmware update system, server, and electronic device

    公开(公告)号:US10713032B2

    公开(公告)日:2020-07-14

    申请号:US15812339

    申请日:2017-11-14

    申请人: Onkyo Corporation

    发明人: Takashi Nakabe

    摘要: A system that includes an electronic device and a server configured to communicate via a network, and the electronic device includes first circuitry that stores firmware in a first memory of the electronic device; sends a network address of the electronic device to the server; and updates the firmware based on an update package received from the server in response to sending the network address, and the server includes second circuitry that stores, in a second memory of the server, a plurality of network addresses of a plurality of the electronic devices, and a plurality of update packages; and sends one of the plurality of update packages to the electronic device based on the network address of the electronic device which is sent from the electronic device.

    Relay drive circuit with a current mirror circuit

    公开(公告)号:US10593499B2

    公开(公告)日:2020-03-17

    申请号:US15657124

    申请日:2017-07-22

    申请人: Onkyo Corporation

    发明人: Naofumi Murai

    IPC分类号: H01H47/32 H01H47/02

    摘要: The present invention is intended to provide constant drive conditions of a relay switch. A relay drive circuit includes a current mirror circuit, a current suppression circuit 26, and a transistor Q3. The current mirror circuit includes a transistor Q1, a first resistor element R1, a transistor Q2, and a second resistor element R2. A relay coil 18 is provided on a current supply path extending from a collector terminal of the transistor Q1 to an earth conductor. The current suppression circuit 26 includes a capacitor C1 as a current suppression element configured to suppress, after conduction between an emitter terminal and a collector terminal of the transistor Q2 has been made, the current flowing through the current suppression element itself as compared to that in such conduction.

    Audio processing device for a ceiling reflection type speaker

    公开(公告)号:US10405128B2

    公开(公告)日:2019-09-03

    申请号:US15354168

    申请日:2016-11-17

    申请人: Onkyo Corporation

    发明人: Susumu Yamamoto

    IPC分类号: H03G5/00 H04S7/00 H04R5/02

    摘要: To resolve a problem that a listener feels that sense of localization and sense of connecting with the other channels are lost in case that the listener listens to an audio that is output from a ceiling reflection type speaker in an audio processing device that outputs an analog audio signal to speakers including the ceiling reflection type speaker that makes the audio reflect at a ceiling.A DSP 5 performs low-pass filter processing that extracts low frequency component from a digital audio signal, high-pass filter processing that extracts high frequency component from the digital audio signal, delay processing that delays the low frequency component of the digital audio signal that is extracted by the low-pass filter processing, and composition processing that composes the low frequency component of the digital audio signal that is delayed by the delay processing and the high frequency component of the digital audio signal that is extracted by the high-pass filter processing as audio signal processing.

    Rotational structure for rotary knob

    公开(公告)号:US10401895B2

    公开(公告)日:2019-09-03

    申请号:US15198100

    申请日:2016-06-30

    申请人: Onkyo Corporation

    发明人: Shinji Yamaguchi

    摘要: Provided is a rotary knob rotational structure being less susceptible to the influence of variation in the dimensions of a rotary knob and reducing backlash of the rotary knob while providing a suitable magnitude of rotational resistance to the rotary knob.The rotary knob rotational structure includes an annular sheet 22 interposed between a device body and the rotary knob 14, an attachment member 24 configured to attach a fixed portion 22a of the annular sheet 22 to the device body with the fixed portion 22a being interposed between the attachment member 24 and the device body, and a body-side protrusion 26 contacting the annular sheet 22 on the outside of the fixed portion 22a in the radial direction of the annular sheet 22 to warp the annular sheet 22 toward the rotary knob 14.

    Electronic device
    9.
    发明授权

    公开(公告)号:US10365924B2

    公开(公告)日:2019-07-30

    申请号:US16058705

    申请日:2018-08-08

    申请人: Onkyo Corporation

    发明人: Kazunari Ito

    IPC分类号: G06F8/654 G06F8/65 G06F11/14

    摘要: An electronic device includes a volatile memory; a non-volatile memory which is for storing firmware; and a circuit, wherein the firmware includes firmware body and loader which is for rewriting the non-volatile memory, and the circuit, judges whether the firmware is being rewritten or not based on a first mark when activating, judges whether the loader is being rewritten or not based on a second mark when it judges that the firmware is being rewritten, copies the loader which is copied to the other position of the non-volatile memory to the volatile memory when it judges that the loader is being rewritten, and executes the loader which is copied to the volatile memory and rewrites the firmware which is stored in the non-volatile memory.

    Method for manufacturing a speaker diaphragm

    公开(公告)号:US10327075B2

    公开(公告)日:2019-06-18

    申请号:US15370083

    申请日:2016-12-06

    申请人: Onkyo Corporation

    摘要: A method is provided for manufacturing a speaker diaphragm manufactured using a sheet material made of magnesium or magnesium alloy and including an annular cone portion along an outer peripheral edge of a dome portion. The method includes a dome preformation process of forming a dome preformation portion; a cone preformation process of forming an annular cone preformation portion; and a shaping process of shaping the dome preformation portion into the dome portion by pressing, shaping the cone preformation portion into the cone portion whose outer peripheral end at least extends to a substantially identical height position to a maximum protrusion position of the dome portion, and forming, along a boundary portion between the dome portion and the cone portion, an annular step portion to which a voice coil bobbin is attached.