Matsushita Electric Industrial Co., Ltd.

Panasonic Intellectual Property Management Co., Ltd.

Panasonic Corporation

Panasonic Holdings Corporation

Keisuke Fujimoto

Masaru Imai

Noboru Katakabe

Kenji Asakura

Masaaki Nakano

Akihiro Yasuda

Noriyuki Tajima

Yasumori Hino

Masahiko Hashimoto

Hiroyuki Matsuo

Masaichiro Tatekawa

Masanori Yoshikawa

Hideo Hirose

Yushi Ogino

Masaomi Inoue

Syuuiti Watanabe

Yasunori Miyamoto

Hiroyuki Matsumoto

Yoshiaki Komma

Kousei Sano

Hideki Nakata

Shuichi Watanabe

Takeharu Yamamoto

Joji Anzai

Takeshi Shimamoto

Koji Sano

Toshimichi Tokuda

Yoshitaka Kitaoka

Hisashi Tsuji

Kazunori Hayashi

Hideaki Yamada

Shinichi Shigenaga

Hirotaka Sawa

Akitoshi Izumi

Shintaro Yoshikuni

Tadashi Maki

Koichi Baba

Shigemitsu Tani

Hirokazu Tasaka

Masakazu Mizusaki

Masayuki Isayama

Shojiro Matsuo

Teppei Fukuda

Takuya Asada

Ryoichi Yuge

Teppei Koido

Ikuko Katoh

Toshiyuki Maeda

Susumu Ono

A radio wave environment measurement device includes: a multi-copter type unmanned flight vehicle configured to move in midair; a polyhedron attached to an airframe of the multi-copter type unmanned flight vehicle, the polyhedron having a plurality of surfaces; and an antenna provided on each of the plurality of surfaces of the polyhedron.

Radio wave environment measurement device

A power transmission device includes a power transmission coil, a magnetically shielded space created by a power transmission-side cancel coil arranged outside the power transmission coil, a moving member configured to move a metal foreign substance, and a moving mechanism configured to move a part or all of an upper surface of the moving member from an area outside the magnetically shielded space into the magnetically shielded space.

Power transmission device, power reception device, wireless power transmission system, and method for driving power transmission device

A loudspeaker system includes a housing including a first housing portion and a second housing portion that are plate-shaped and face each other, a loudspeaker drive unit fixed to the first housing portion, and a coupling member that is rigid and couples the first housing portion and the second housing portion to each other inside the housing. The coupling member includes a first end that is directly or indirectly coupled to the first housing portion and a second end that is directly or indirectly coupled to the second housing portion. When second force is applied to the coupling member, the second force being smaller than first force that irreversibly deforms or breaks a coupling portion between the coupling member and the first housing portion, the coupling member is irreversibly deformed or broken so as to shorten a distance between the first end and the second end of the coupling member.

Loudspeaker system, loudspeaker system component, and audio system

An acoustical performance evaluation method includes a reference sound pressure decision step and a deviation calculation step. In the reference sound pressure decision step, frequency response of sound pressure level, obtained by considering only an influence of a first factor of a plurality of factors causing a deterioration in frequency response of sound pressure level of a loudspeaker to be evaluated, are decided as a reference sound pressure. The reference sound pressure is frequency response of sound pressure level of the loudspeaker in the anechoic chamber calculated through a simulation or measured through a measurement experiment. In the deviation calculation step, a deviation between the reference sound pressure and a target sound pressure is calculated as an evaluation index of acoustical performance. The target sound pressure is frequency response of sound pressure level of the loudspeaker in the anechoic chamber calculated through a simulation or measured through a measurement experiment.

Acoustical performance evaluation method

An earphone includes an audio transmitter, a housing, a sound passage pipe, a radiator, and a light receiver. The audio transmitter transmits sound. The housing has an internal space for containing the audio transmitter. The sound passage pipe guides sound produced at the audio transmitter into an external auditory canal. The radiator radiates light into the external auditory canal. The light receiver is disposed in the internal space of the housing. The light receiver converts the light into a signal, the light having been reflected off the external auditory canal and passed through an internal space of the sound passage pipe. The housing, the sound passage pipe, and the radiator are disposed in this order.

Earphone

A recorder receives designation of a video which is desired to be reproduced from a user. If designation of one or more designated locations where sound is emphasized on a screen of a display which displays the video is received by the recorder from the user via an operation unit during reproduction or temporary stopping of the video, a signal processing unit performs an emphasis process on audio data, that is, the signal processing unit emphasizes audio data in directions directed toward positions corresponding to the designated locations from a microphone array by using audio data recorded in the recorder. A reproducing device reproduces the emphasis-processed audio data and video data in synchronization with each other.

Sound processing system and processing method that emphasize sound from position designated in displayed video image

A control device inputs reliability information on the same data block a plurality of times into a reliability storage memory. A reliability generating device generates a reliability information by performing computation processing based on a stochastic computation by using reliability information generated in the previous cycle that has been saved in the reliability storage memory and reliability information generated in the present cycle, and saves the reliability information generated in the reliability storage memory when the decoding is performed by using reliability information on the data block the same as that in the previous cycle. A column processing computation device computes a column processing output value by using the reliability information generated and saved in the reliability storage memory and a row processing output value.

Decoding apparatus and decoding method

When information is recorded or reproduced on or from an optical information medium having three or more recording layers using blue light, interference by another layer light is reduced and, when information is reproduced from an optical information medium using red light, an S/N ratio is held excellently high. An optical head device includes a first laser light source () which emits blue light, a second laser light source () which emits red light, an objective lens () which focuses the blue light onto a recording layer of a first optical disc () or focuses the red light onto a recording layer of a second optical disc (), a photodetector () which receives the blue light reflected by the recording layer of the first optical disc () or the red light reflected by the recording layer of the second optical disc () and outputs an electric signal in accordance with an amount of the received blue light or red light, and a wavelength selective light blocking region () which blocks a predetermined range of the blue light including an optical axis thereof to prevent the predetermined range from reaching the photodetector (), and transmits the red light.

Optical head device, optical information device, and information processing device

A fixing unit is provided with a fixing belt that heats recording paper that bears and moves a toner image, an exciting coil that generates magnetic flux in the fixing belt and causes the fixing belt to produce heat by electromagnetic induction, and a heat production adjustment section that adjusts the calorific value distribution of the fixing belt by adjusting the magnetic flux acting upon the fixing belt.

Image heating apparatus and image forming apparatus including synchronization of magnetic flux generation

A heating apparatus that enables an abnormally high temperature detection section that detects, when a heating element heated by means of electromagnetic induction reaches an abnormally high temperature, this abnormally high temperature, to operate speedily and reliably irrespective of the material and temperature characteristic of the heating element in a low-cost and compact configuration. In this apparatus, thermostatis disposed on the same side as exciting coilwith respect to heat generating beltand between winding bundles of a conductor wire of exciting coil. This allows coil guideto hold both thermostatand exciting coiland allows these wires and terminals to be concentrated on one location, thus making it possible to reduce the number of parts and assembling man-hours and configure the body of the apparatus in a low-cost and compact configuration. Furthermore, thermostatoperates reliably when heat generating beltreaches an abnormally high temperature irrespective of whether the material of heat generating beltis a magnetic member or not and whether the temperature of heat generating belthas exceeded a Curie temperature or not.

Heating apparatus, fixing apparatus and image forming apparatus

In a fixing apparatus using an induction heating type of heating apparatus, there are provided an excitation apparatus that generates magnetic flux, an opposed core located opposite the excitation apparatus, a fixing belt that is induction-heated by the aforementioned magnetic flux, and magnetism masking elements that block magnetic paths corresponding to paper non-passage areas of fixing belt between the excitation apparatus and the opposed core. By blocking magnetic paths between the excitation apparatus and the opposed core by the magnetism masking elements, magnetic flux that induction-heats the fixing belt is effectively masked, and an excessive rise in temperature of paper non-passage areas of fixing belt is prevented.

Fixing device

An image heating apparatus is provided that enables the entire width of a heat-producing medium to be heated uniformly and an excessive rise in temperature to be prevented, without making the configuration complex. In a fixing unitin which this apparatus is applied, a fixing beltis an annular member that has an inner peripheral surface and an outer peripheral surface, and produces heat through the action of magnetic flux. An exciting coilis located in proximity to the outer peripheral surface of fixing beltand generates magnetic flux that acts upon fixing beltA suppression memberis located in proximity to inner peripheral surface of fixing beltand reduces, of the magnetic flux generated by exciting coilmagnetic flux that acts upon a paper non-passage area of fixing belt

Image heating device and image forming device

A canceling exciting coil is supported by a coil supporting member of electrically insulating material fitted to an arch core. A canceling current Ic of opposite phase to a main current I flowing in the magnetic field generation circuit of the exciting coil by means of an exciting circuit is made to flow in a canceling magnetic field generation circuit provided with a canceling exciting coil, and generates canceling flux Mc. The idle component of the AC voltage generated in the canceling exciting coil is minimized by changing the number of turns n, coil inner area, and winding distribution of the canceling exciting coil, and adjusting canceling current Ic.

Shielding method and shielding apparatus

Growing community of inventors

Osaka, Japan

Keisuke Fujimoto