Panasonic Intellectual Property Management Co., Ltd.

Panasonic Corporation

Matsushita Electric Industrial Co., Ltd.

Kao Corporation

Suguru Nakao

Hiroshi Kunimoto

Makoto Iyoda

Shuji Yamashita

Takashi Nagashima

Shouichi Irie

Hiroto Inoue

Mitsuhiro Wada

Kei Tasaka

Yukihiro Iwata

Takehiko Yamashita

Toshiaki Ogura

Takeharu Tsutsumi

Naoto Tada

Hideto Adachi

Takeshi Ueda

Masahiro Mori

Akira Takamori

Tomokazu Tokunaga

Akira Takenaka

Yasuo Yokota

Toshiaki Takasu

Yusuke Matsumoto

Tomoya Tsuboi

Ichiro Okuda

Kazuya Honda

Yoshiro Oda

Keizo Kawakami

Ken Miura

Teppei Koido

Katsuo Saigou

Yuki Iwamoto

Yosuke Yamane

Korekazu Mochida, Legal Representative

Kyoko Mochida, Legal Representative

Hirosi Kunimoto

Masatoshi Tamura

Norihiko Saka

Hiromi Kanzawa

A determination device includes an interface configured to acquire a vibration signal generated when a position of an object is switched, and a controller configured to determine a state of the object using the vibration signal.

Determination device, system, and determination method

A bone conduction microphone includes a housing having an opening, a microphone pad, an element support member, a piezoelectric element, and a drive plate. The microphone pad is formed in a bottomed tubular shape having a bottom portion disposed outward and a tubular portion with an outer circumference fixed to an inner circumference of the opening. The element support member has an outer circumference fixed to an inner circumference of the tubular portion, and a support portion projecting toward the bottom portion. The piezoelectric element is in a plate shape with a peripheral edge of one surface fixed to the support portion and picks up vibration. The drive plate has a diaphragm part fixed to an inward surface of the bottom portion, and the diaphragm part is provided at a center with a protrusion fixed to an element central portion on another surface of the piezoelectric element.

Bone-conduction microphone

A heartbeat detection device includes a bone conduction microphone that converts, into a signal, displacement on the body surface of a user in a thickness direction of the body of the user, and an extractor that extracts a first frequency component and a second frequency component which are included in the signal. The first frequency component is based on audio information of the user, and the second frequency component is based on heartbeat information of the user. The heartbeat detection device is capable of estimating the physical and psychological state of the user based on the heartbeat information by extracting both the audio information and the heartbeat information, from a signal that has been output by the bone conduction microphone.

Heartbeat detection device and heartbeat detection method

A bone conduction microphone is configured to convert vocal cord vibration into a sound signal. The bone conduction microphone includes a vibration collection unit configured to come into contact with a human body and collect vibration in a predetermined direction, which is included in the vocal cord vibration, and a switch configured to switch whether collection of the vibration in the predetermined direction is enabled. The switch is disposed on a side of the vibration collection unit, which is opposite to a side configured to come into contact with the human body, to allow a direction of an operation of switching whether collection of the vibration in the predetermined direction is enabled to be parallel to the predetermined direction.

Bone conduction microphone, bone conduction headset, and communication device

A bone conduction headset includes a support member having a U-shape, a pair of bone conduction speakers respectively provided to a first end of the support member and a second end of the support member, the second end being opposite to the first end, a microphone coupled to the first end, and a mute switch provided to either the first end or the second end, and configured to perform a control to lower volume on the pair of bone conduction speakers.

Bone conduction headset

A bone conduction speaker includes a vibration driver that includes a magnetic circuit and a vibration plate, and that is configured to convert sound into vibration, a vibration body configured to hold a side of the vibration driver, which is adjacent to the magnetic circuit, to come into contact with a subject, and to transmit vibration of the vibration driver to the subject, and a lid body configured to cover a side of the vibration driver, which is adjacent to the vibration plate, without being in contact with the vibration driver, and to substantially seal the vibration driver together with the vibration body.

Bone conduction speaker and bone conduction headphone device

A headset main body includes a PTT switch, bone conduction speakers, a first connector to be coupled with a microphone, and a second connector to be coupled with a transceiver. A sleeve of the first connector is coupled to a sleeve of the second connector. A ring of the first connector is coupled to a ground. A chip of the first connector is coupled to a ring of the second connector, and the chip of the first connector is further coupled, via the PTT switch, to the ground.

Sound input and output device and bone conduction headset system

A headset supported on a head of a wearer while passing around the head includes a bone conduction speaker, a contact type microphone, a frame that supports the bone conduction speaker and has elasticity, and a movable part configured to change a distance between the bone conduction microphone and the frame. This configuration can provide a headset that is easily worn by the wearer.

Headset

A material for audio equipment housing containing a polylactic acid resin composition containing a polylactic acid resin, a plasticizer, an organic crystal nucleating agent, and an inorganic material, wherein the content of the plasticizer is from 1 to 50 parts by mass based on 100 parts by mass of the polylactic acid resin; and a vibration-damping material containing a polylactic acid resin composition containing a polylactic acid resin, a plasticizer, an organic crystal nucleating agent, and an inorganic material, wherein the content of the plasticizer is from 1 to 50 parts by mass based on 100 parts by mass of the polylactic acid resin. The material of the present invention can be suitably used as materials for audio equipment of, for example, speakers, television, radio cassette players, headphones, audio components, or microphones, and manufactured articles, such as electric appliances, transportation vehicles, construction buildings, and industrial equipment, or parts or housing thereof.

Vibration damping material

As a photoreceiver for a remote controller used in a display device or the like, a photoreceiver that is compact and has excellent light receiving sensitivity is provided. The photoreceiver includes a light receiving sensor that receives remote controller signal light from a remote controller to convert the received remote controller signal light into an electric signal, and a light guide body that guides the remote controller signal light to the light receiving sensor. The light guide body includes at least a first light guide body including an incident surface upon which the remote controller signal light is incident, and a second light guide body including an emission surface from which remote controller signal light is emitted, and a section of the first light guide body shows a round cornered rectangle, and a section of the second light guide body shows a substantial rectangle.

Photoreceiver and display device

A light receiving device has a light receiving section for receiving a remote control signal light beam, and a light guide section for guiding the light beam to the light receiving section. The light guide section has a first reflection surface for reflecting the light beam to the light receiving section, the first reflection surface being disposed to oppose obliquely at a sharp angle to an entrance plane, and a second reflection surface for guiding the remote control signal light beam, the second reflection surface being disposed between the entrance plane and the first reflection surface. The first reflection surface includes a circular arc curved surface curved outward in a part closer to the entrance plane and farther from the light receiving section, and a linear inclined surface in a part approaching the light receiving section from the curved surface.

Light receiving device

A brightness distribution of light emitted from one specific light source and outputted from the light outputting part of a light-guide part has a characteristic of having a mountain-shaped distribution increasing from a position of the specific light source, then reaching a maximum value, and then decreasing with distance from a specific light source, and a light source adjacent to the specific light source is disposed at a position where a brightness distribution decreases from the maximum value of the brightness distribution.

Display device with a light emission part disposed around a display part

A decorative member composing a casing includes: a resin layer () having a front surface () and a back surface (); and a reflective layer () formed on the back surface () of the resin layer (). The back surface () of the resin layer () includes a receding surface () formed therein. The receding surface recedes gradually toward the front surface () to change a thickness of the resin layer (). The receding surface () is a concave surface forming a depression that opens while broadening. The back surface () of the resin layer () has a reference surface () around the receding surface (), and a portion of the reference surface () facing an internal space of the casing is a roughened area ().

Decorative member

An injection moldincludes a first portion, a second portion, a third portion, and a fourth portion. The first portionhas three high-density regions H in which there is the highest proportion of the axial direction dimension accounted for by the portion corresponding to cam grooves with respect to the axial direction dimension of a cavity. First gatesare disposed at locations corresponding to the high-density regions H, or closer to the high-density regions H than second gates. The average channel sectional area of first runnersis larger than the average channel sectional area of second runners

Cylindrical molded article, injection mold and manufacturing method of cylindrical molded article

A decorative member (A) includes: a resin layer () having a front surface () and a back surface (); and a reflective layer () formed on the back surface () of the resin layer (). The back surface () of the resin layer () includes a receding surface () formed therein. The receding surface recedes gradually toward the front surface () to change a thickness of the resin layer (). A pigmented layer () configured so that lightness/depth of color thereof changes in accordance with the change in the thickness of the resin layer () is provided between the back surface () of the resin layer () and the reflective layer ().

Growing community of inventors

Hyogo, Japan

Suguru Nakao