4584 patents
Page 15 of 230
Utility
Frequency band expansion device, frequency band expansion method, and storage medium storing frequency band expansion program
19 Sep 23
A frequency band expansion device includes processing circuitry to calculate a weighting coefficient based on a frequency gradient of the input signal; to generate a white noise signal; to generate a first white noise signal by performing filtering on the white noise signal; to generate a second white noise signal by regulating a phase characteristic of the white noise signal; to generate a third white noise signal by performing weighted addition on the first white noise signal and the second white noise signal by using the weighting coefficient; and to generate the output signal by adding together the input signal and a signal corresponding to the third white noise signal, wherein the processing circuitry is configured so that the phase characteristic of the second white noise signal becomes the same as the phase characteristic of the first white noise signal.
Kosuke Hosoya, Masaru Kimura
Filed: 23 Jun 21
Utility
Semiconductor device and method of manufacturing semiconductor device
19 Sep 23
An object of the present invention is to provide a semiconductor device whose surfaces on both sides can be cooled and which has a function of insulating, on both the surfaces, the internal structure of a semiconductor package from the outside.
Hideo Komo, Takeshi Omaru, Takuya Tsuru
Filed: 12 Nov 18
Utility
Joint structure, semiconductor device, and method of manufacturing same
19 Sep 23
Provided is a joint structure interposed between a semiconductor element and a substrate, the joint structure including: a Sn phase; Cu alloy particles containing P in an amount of 1 mass % or more and less than 7 mass %; and Ag particles, wherein the Cu alloy particles are each coated with a Cu6Sn5 layer, wherein the Ag particles are each coated with a Ag3Sn layer, wherein the Cu alloy particles and the Ag particles are at least partially bonded to each other through a Cu10Sn3 phase, wherein a total of addition amounts of the Cu alloy particles and the Ag particles is 25 mass % or more and less than 65 mass % with respect to the joint structure, and wherein a mass ratio of the addition amount of the Ag particles to the addition amount of the Cu alloy particles is 0.2 or more and less than 1.2.
Koji Yamazaki, Yoshio Tamura
Filed: 8 Nov 18
Utility
Satellite transmitter and relay satellite communication system
19 Sep 23
A satellite transmitter includes K transmission antenna elements, a multiplexing unit configured to multiplex each of K digital signals on a frequency axis and then convert the multiplexed digital signals to time-domain digital signals, a digital-to-analog converter, a PAPR calculation unit configured to calculate a PAPR for each of the K digital signals, a beam-to-beam relative phase calculation unit configured to calculate a beam-to-beam relative phase for suppressing a peak power of the transmission antenna elements, an excitation coefficient calculation unit configured to calculate K updated excitation coefficients based on the beam-to-beam relative phase and the beam-formation excitation coefficient, and an excitation coefficient multiplication unit configured to generate the digital signals of a frequency domain to be output to the multiplexing unit by multiplying a received relay signal by each of the K updated excitation coefficients in the frequency domain.
Hitomi Ono, Akinori Fujimura, Terumi Sunaga
Filed: 20 Sep 19
Utility
Optical scanning device and method of manufacturing the same
19 Sep 23
An optical scanning device includes a mirror and a drive beam.
Nobuaki Konno, Yoshiaki Hirata, Takahiko Ito
Filed: 1 Dec 17
Utility
Data generation device, machine learning system, and machining state estimation system
19 Sep 23
A data generation device includes a large-scale data acquisition unit that obtains large-scale data that is large-scale learning data used in learning of a first determination model for determining a machining state of a workpiece machined by a first machine tool; an adaptive data acquisition unit that obtains adaptive data for use in generation of learning data for use in learning of a second determination model for determining a machining state of a workpiece machined by a second machine tool; and a learning data generation unit that converts the large-scale data based on the adaptive data to generate adapted large-scale data for use in learning of the second determination model.
Teruaki Fukuoka, Nobuaki Tanaka
Filed: 20 May 20
Utility
Outdoor unit of air-conditioning apparatus
19 Sep 23
An outdoor unit of an air-conditioning apparatus includes: a terminal unit that is provided on an outer peripheral surface of a compressor, and electrically connects components provided in the compressor and outside the compressor; a side soundproof cover that covers the outer peripheral surface of the compressor except for the terminal unit; and a terminal cover that covers the terminal unit exposed from the side soundproof cover to the outside of the side soundproof cover, and soundproofs the terminal unit.
Motoki Otsuka, Noka Sakabe, Mizuo Sakai, Tetsuya Yamashita, Masafumi Tomita
Filed: 30 Jan 18
Utility
Mirror device
19 Sep 23
In order to expand the surface area of a reflective layer, the space between adjacent turns of a drive coil, which is wound a plurality of turns on a peripheral edge front surface of the principal surface of a movable portion which, being inside a frame-formed support substrate, is connected to the support substrate by torsion bars, is filled and flattened with a smoothing layer, thereby adopting a configuration such that the reflective layer can also be provided in the region of the upper surface of the drive coil.
Shingo Moriue, Hirofumi Konishi, Fusako Tomizumi, Yoshitaka Tsuboi
Filed: 19 Oct 20
Utility
Communication device, communication system, communication method, and recording medium
19 Sep 23
A communication device includes a parameter setter and a communication controller for cyclic communication to transmit data including a first data piece and a second data piece different from the first data piece and having lower priority for real-time transmission than the first data piece to slave stations.
Yutaro Sueyoshi
Filed: 24 Apr 20
Utility
Control device and manufacturing method of control device
19 Sep 23
An object here is to provide a control device which can be reduced in size, weight and cost while being able to prevent unauthorized access.
Yutaka Takeuchi, Hideyuki Takahama, Yuzo Taguchi, Shozo Kanzaki
Filed: 19 May 22
Utility
Image sensor unit
19 Sep 23
An image sensor unit includes: a visible light cut filter that is arranged between a first light source and a first light guide and blocks light including visible light having wavelengths longer than those of ultraviolet light; a lens body that condenses light generated on a reading target by light radiated from the first light guide and light radiated from a second light guide; a line sensor that receives the light condensed by the lens body; and an ultraviolet light cut filter arranged between the lens body and the line sensor and blocks ultraviolet light.
Hideki Matsui, Kazuya Makabe, Kazuki Miyazaki
Filed: 2 Oct 20
Utility
Wedge tool, bonding device, and bonding inspection method
12 Sep 23
It is an object to enable a non-destructive inspection of reliability of a bonding part and enabling an accurate inspection.
Daisuke Imai
Filed: 7 Feb 18
Utility
Subchannel encoding device, subchannel decoding device, subchannel encoding method, subchannel decoding method, and subchannel multiplexing optical communication system
12 Sep 23
A subchannel encoding device is configured to include: a probability distribution shaping-encoding unit for dividing M×N (M is an integer of two or more, and N is an integer of one or more) subchannels into N groups, shaping a probability distribution of transmission modulation symbols of each group on the basis of signal-to-noise ratios of the M×N subchannels, and converting an information bit string into a shaped bit string corresponding to the probability distribution of the transmission modulation symbols of each group; a subchannel signal generating unit for generating each subchannel signal in the M×N subchannels from the shaped bit string; and a signal multiplexing unit for multiplexing the M×N subchannel signals generated by the subchannel signal generating unit to generate a subchannel multiplexed signal.
Tsuyoshi Yoshida
Filed: 10 Dec 21
Utility
Delay synchronization circuit, clock transmission circuit, and clock transmission and reception circuit
12 Sep 23
A delay synchronization circuit includes a pulse synthesizing circuit to generate a synthesized signal including a first pulse signal synchronized with a reference signal and a second pulse signal synchronized a feedback signal, a VCDL to delay the synthesized signal g and output a delayed synthesized signal, a pulse separation circuit to generate a first separation signal synchronized with a first pulse signal included in the delayed synthesized signal and generate a second separation signal synchronized with a second pulse signal included in the delayed synthesized signal, a circulator to output a first separation signal to a clock reception circuit and then output the first separation signal returned from the clock reception circuit to the pulse synthesizing circuit as the feedback signal, and a delay-amount control circuit to control a delay amount of the delayed synthesized signal according to a phase difference between the reference signal and the second separation signal.
Sho Ikeda, Koji Tsutsumi, Masaomi Tsuru
Filed: 20 Sep 22
Utility
Rotating electric machine
12 Sep 23
Provided is a rotating electric machine capable of reducing oscillations and noise generated in the rotating electric machine.
Hiroyuki Takashima, Masatsugu Nakano, Kosho Yamane, Masaya Inoue
Filed: 13 Aug 20
Utility
Power conversion device
12 Sep 23
A power conversion device includes: a power converter connected to an AC grid to which a load is connected; and a control circuit.
Takato Toi, Takuya Kajiyama, Toshiyuki Fujii
Filed: 17 Mar 20
Utility
Refrigeration cycle apparatus
12 Sep 23
The present invention has an object to provide a refrigeration cycle apparatus.
Yuki Mori, Masashi Fujitsuka, Takahiro Nakai
Filed: 11 Mar 19
Utility
Vibration analysis apparatus and vibration analysis method
12 Sep 23
A vibration analysis apparatus includes: a storage unit storing a regression equation indicating correspondence between rotation speed change of a rotation mechanism and a peak occurrence frequency of acceleration of vibration, for each acceleration peak; an analysis unit extracting a peak occurrence frequency of acceleration of vibration for each acceleration peak, based on vibration data of the rotation mechanism and calculating, for each acceleration peak, a waveform area of the acceleration peak by integrating the acceleration peak over a specific frequency section; and an anomaly determination unit determining whether operational anomaly occurs in the rotation mechanism for each acceleration peak.
Tetsushi Ishida
Filed: 19 May 20
Utility
Headlight module and headlight device
12 Sep 23
A headlight module includes: a light source for emitting light; a condensing optical element for concentrating the light; and an optical element including an incident surface for receiving the concentrated light, a reflecting surface for reflecting the received light, and an emitting surface for emitting the reflected light.
Masashige Suwa, Ritsuya Oshima, Kuniko Kojima
Filed: 19 Nov 21
Utility
Course generation apparatus and vehicle control apparatus
12 Sep 23
There has been a problem that because in a section where a road forks from a main lane or merges the main lane, the number of lanes increases or decreases, breakage of a lane line and existence of other vehicles hinder the lane line from being read and hence generation of a target course becomes unstable.
Takayuki Tanaka, Michihiro Ogata, Taiki Kumi
Filed: 28 Jan 22