Patents by Inventor Toshiaki Koike-Akino
Toshiaki Koike-Akino has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11251896Abstract: A system is provided for training a device design network. The system includes an interface configured to input data of a device, a memory to store the device design network including an encoder, a decoder, and an adversarial block, and a processor. The processor is, in connection with the memory, configured to update the encoder and the decoder based on a first loss function to reduce the difference between the input data and output data of the decoder, wherein the encoder is constructed by at least one convolutional layer followed by at least one parallel fully connected layer to extract features of a layout of the device, and update the adversarial block to construct by maximizing a second loss function.Type: GrantFiled: March 3, 2020Date of Patent: February 15, 2022Assignee: Mitsubishi Electric Research Laboratories, Inc.Inventors: Keisuke Kojima, Yingheng Tang, Toshiaki Koike-Akino, Ye Wang
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Patent number: 11249181Abstract: A system for keyless entry applications using beamforming transmission in a millimeter wave spectrum in an environment. A memory with data including values indicative of link attributes associated with beam signal measurements with states of devices and states of environments. The states of the devices for each device including types of user behavior, locations and poses in each environment. Control circuitry performs beam training with a target device associated with at least one keyless entry application in the environment to measure beam signal values and environmental responses for different beams transmitted over the different beam angles. Selects, in response to the beam training, at least one dominant angle for a beamforming communication with the target device. Estimates, a state of the target device associated with the at least one keyless entry application or a state of the environment, corresponding to environmental responses for different beams estimated during the beam training.Type: GrantFiled: December 9, 2019Date of Patent: February 15, 2022Assignee: Mitsubishi Electric Research Laboratories, Inc.Inventors: Toshiaki Koike-Akino, Pu Wang, Milutin Pajovic, Philip Orlik
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Publication number: 20220012926Abstract: A method for a target image reconstruction is provided. The method includes emitting stepped frequency waveforms having different constant frequencies at different periods of time, modulating the stepped frequency waveforms into frequency ranges each having a first frequency and a second frequency, wherein each of the stepped frequency waveforms are increased from the first frequency to the second frequency based on a range function, wherein the modulated stepped frequency waveforms are arranged with some sparsity factor.Type: ApplicationFiled: July 10, 2020Publication date: January 13, 2022Inventors: David Millar, Okan Atalar, Keisuke Kojima, Toshiaki Koike-Akino, Pu Wang, Kieran Parsons
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Publication number: 20220004875Abstract: A system for automated construction of an artificial neural network architecture is provided. The system includes a set of interfaces and data links configured to receive and send signals, wherein the signals include datasets of training data, validation data and testing data, wherein the signals include a set of random number factors in multi-dimensional signals X, wherein part of the random number factors are associated with task labels Y to identify, and nuisance variations S. The system further includes a set of memory banks to store a set of reconfigurable deep neural network (DNN) blocks, hyperparameters, trainable variables, intermediate neuron signals, and temporary computation values including forward-pass signals and backward-pass gradients.Type: ApplicationFiled: July 2, 2020Publication date: January 6, 2022Inventors: Toshiaki Koike-Akino, Ye Wang, Andac Demir, Deniz Erdogmus
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Patent number: 11204467Abstract: A grating coupler having first and second ends for coupling a light beam to a waveguide of a chip includes a substrate configured to receive the light beam from the first end and transmit the light beam through the second end, the substrate having a first refractive index n1, a grating structure having curved grating lines arranged on the substrate, the grating structure having a second refractive index n1, wherein the curved grating lines have line width w and height d and are arranged by a pitch ?, wherein the second refractive index n2 is less than first refractive index n1, and a cladding layer configured to cover the grating structure, wherein the cladding layer has a third refractive index n3.Type: GrantFiled: February 28, 2020Date of Patent: December 21, 2021Assignees: Mitsubishi Electric Research Laboratories, Inc., Mitsubishi Electric CorporationInventors: Keisuke Kojima, Mitsunobu Gotoda, Toshiaki Koike-Akino, Mohammad Tahersima
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Publication number: 20210350239Abstract: A system for flexible regularization and adaptable scaling of an artificial neural network is provided.Type: ApplicationFiled: May 5, 2020Publication date: November 11, 2021Inventors: Ye Wang, Toshiaki Koike-Akino
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Patent number: 11122397Abstract: A communication system using beamforming transmission in a millimeter wave spectrum in an environment. A memory with data including values indicative of link attributes associated with beam signal measurements with states of devices and states of environments. The states of the devices for each device including types of user behavior, locations and poses in each environment. The states of the environments for each environment including, locations of physical objects and types of behavior of ambient users. Control circuitry performs beam training with a target device in environment to measure beam signal values and environmental responses for different beams transmitted over the different beam angles. Selects, in response to the beam training, at least one dominant angle for a beamforming communication with the target device. Estimates, one of a state of the target device or a state of the environment, corresponding to environmental responses for different beams estimated during the beam training.Type: GrantFiled: November 20, 2019Date of Patent: September 14, 2021Assignee: Mitsubishi Electric Research Laboratories, Inc.Inventors: Milutin Pajovic, Toshiaki Koike-Akino, Pu Wang, Philip Orlik
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Patent number: 11121816Abstract: An apparatus for processing a perturbation quantity received in a wireless network. The perturbation quantity including a non-linear effect from at least one transmitted signal of the wireless network. The apparatus including a Base Station (BS) configured to establish a link between the BS and a user equipment (UE). A processing circuit is configured to implement receiver-side decoders. Wherein a receiver-side decoder is configurable to provide a recovery of unknown symbols perturbed by the perturbation quantity, the recovery is at a receiver-side and the perturbation is at the transmitter-side. Provide receiver-side decoding for symbol detection of symbol-dependent transmit-side perturbations by imposing a hierarchical signal model on the transmitted symbol.Type: GrantFiled: December 4, 2019Date of Patent: September 14, 2021Assignee: Mitsubishi Electric Research Laboratories, Inc.Inventors: Pu Wang, Toshiaki Koike-Akino, Milutin Pajovic, Philip Orlik
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Publication number: 20210281349Abstract: A photonic device for splitting optical beams includes an input port configured to receive an input beam having an input power, a power splitter including perturbation segments arranged in a first region and a second region of a guide material having a first refractive index, each segment having a second refractive index, wherein the first region is configured to split the input beam into a first beam and a second beam, wherein and the second region is configured to separately guide the first and second beams, wherein the first refractive index is greater than the second refractive index, and output ports including first and second output ports connected the power splitter to respectively receive and transmit the first and second beams.Type: ApplicationFiled: March 3, 2020Publication date: September 9, 2021Applicant: Mitsubishi Electric Research Laboratories, Inc.Inventors: Keisuke Kojima, Yingheng Tang, Toshiaki Koike-Akino, Ye Wang
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Publication number: 20210254982Abstract: A system and a method for tracking an expanded state of an object including a kinematic state indicative of a position of the object and an extended state indicative of one or combination of a dimension and an orientation of the object is provided herein. The system comprises at least one sensor configured to probe a scene including a moving object with one or multiple signal transmissions to produce one or multiple measurements of the object per the transmission, and a processor configured to execute a probabilistic filter tracking a joint probability of the expanded state of the object estimated by a motion model of the object and a measurement model of the object, wherein the measurement model includes a center-truncated distribution having truncation intervals. The system further comprises an output interface configured to output the expanded state of the object.Type: ApplicationFiled: February 13, 2020Publication date: August 19, 2021Applicant: Mitsubishi Electric Research Laboratories, Inc.Inventors: Pu Wang, Yuxuan Xia, Karl Berntorp, Toshiaki Koike-Akino, Hassan Mansour, Petros Boufounos, Philip Orlik
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Patent number: 11061388Abstract: A scanner for image reconstruction of a structure of a target object uses a neural network trained to classify each segment of a sequence of segments of a modified wave into one or multiple classes. The sequence of segments corresponds to the sequence of layers of the target object, such that a segment of modified wave corresponds to a layer having the same index in the sequence of layers as an index of the segment in the sequence of segments. The scanner executes the neural network for each wave modified by penetration through the layers of the target object to produce the classes of segments of the modified waves. Next, the scanner selects the classes of segments of different modified waves corresponding to the same layer to produce an image of the layer of the target object with pixel values being functions of labels of the selected classes.Type: GrantFiled: August 27, 2019Date of Patent: July 13, 2021Assignee: Mitsubishi Electric Research Laboratories, Inc.Inventors: Pu Wang, Toshiaki Koike-Akino, Philip Orlik, Arindam Bose
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Publication number: 20210176008Abstract: An apparatus for processing a perturbation quantity received in a wireless network. The perturbation quantity including a non-linear effect from at least one transmitted signal of the wireless network. The apparatus including a Base Station (BS) configured to establish a link between the BS and a user equipment (UE). A processing circuit is configured to implement receiver-side decoders. Wherein a receiver-side decoder is configurable to provide a recovery of unknown symbols perturbed by the perturbation quantity, the recovery is at a receiver-side and the perturbation is at the transmitter-side. Provide receiver-side decoding for symbol detection of symbol-dependent transmit-side perturbations by imposing a hierarchical signal model on the transmitted symbol.Type: ApplicationFiled: December 4, 2019Publication date: June 10, 2021Applicant: Mitsubishi Electric Research Laboratories, Inc.Inventors: Pu Wang, Toshiaki Koike-Akino, Milutin Pajovic, Philip Orlik
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Publication number: 20210152990Abstract: A communication system using beamforming transmission in a millimeter wave spectrum in an environment. A memory with data including values indicative of link attributes associated with beam signal measurements with states of devices and states of environments. The states of the devices for each device including types of user behavior, locations and poses in each environment. The states of the environments for each environment including, locations of physical objects and types of behavior of ambient users. Control circuitry performs beam training with a target device in environment to measure beam signal values and environmental responses for different beams transmitted over the different beam angles. Selects, in response to the beam training, at least one dominant angle for a beamforming communication with the target device. Estimates, one of a state of the target device or a state of the environment, corresponding to environmental responses for different beams estimated during the beam training.Type: ApplicationFiled: November 20, 2019Publication date: May 20, 2021Applicant: Mitsubishi Electric Research Laboratories, Inc.Inventors: Milutin Pajovic, Toshiaki Koike-Akino, Pu Wang, Philip Orlik
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Publication number: 20210149039Abstract: A system for keyless entry applications using beamforming transmission in a millimeter wave spectrum in an environment. A memory with data including values indicative of link attributes associated with beam signal measurements with states of devices and states of environments. The states of the devices for each device including types of user behavior, locations and poses in each environment. Control circuitry performs beam training with a target device associated with at least one keyless entry application in the environment to measure beam signal values and environmental responses for different beams transmitted over the different beam angles. Selects, in response to the beam training, at least one dominant angle for a beamforming communication with the target device. Estimates, a state of the target device associated with the at least one keyless entry application or a state of the environment, corresponding to environmental responses for different beams estimated during the beam training.Type: ApplicationFiled: December 9, 2019Publication date: May 20, 2021Applicant: Mitsubishi Electric Research Laboratories, Inc.Inventors: Toshiaki Koike-Akino, Pu Wang, Milutin Pajovic, Philip Orlik
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Patent number: 10998922Abstract: An encoder for encoding source information into an encoded codeword used in a communication channel includes a data input to receive source data, a processor, and a memory to store an encoder program. The encoder program makes the processor to encode the source data into a turbo product coding (TPC) structure, and the TPC structure comprises a data block corresponding to the source data, a first parity block including a first column part, a first corner part and a first bottom part, the first parity block being arranged so as to cover a right end column of the data block, a right bottom corner of the data block and a bottom row of the data block by the first column part, the first corner part and the first bottom part, and a second parity block having a row parity block, a joint parity block and a column parity block.Type: GrantFiled: January 10, 2018Date of Patent: May 4, 2021Assignee: Mitsubishi Electric Research Laboratories, Inc.Inventor: Toshiaki Koike-Akino
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Patent number: 10996400Abstract: An optical waveguide interferometer that includes a first optical section, a second optical section, and a set of optical waveguides configured to connect the first and second optical sections, such that light propagating between the first optical section and the second optical section passes through each optical waveguide in the set, wherein the set of optical waveguides includes a first optical waveguide having a first length and a first width and a second optical waveguide having a second length and a second width, wherein the second length is greater than the first length, and the second width is greater than the first width.Type: GrantFiled: August 4, 2016Date of Patent: May 4, 2021Assignees: Mitsubishi Electric Research Laboratories, Inc.Inventors: Keisuke Kojima, Bingnan Wang, Toshiaki Koike-Akino, Koichi Akiyama, Eiji Yagyu, Satoshi Nishikawa, Kosuke Shinohara
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Patent number: 10962717Abstract: A grating coupler having first and second ends for coupling a light beam to a waveguide of a chip includes a substrate configured to receive the light beam from the first end and transmit the light beam through the second end, the substrate having a first refractive index n1, a grating structure having curved grating lines arranged on the substrate, the grating structure having a second refractive index n1, wherein the curved grating lines have line width w and height d and are arranged by a pitch ?, wherein the second refractive index n2 is less than first refractive index n1, and a cladding layer configured to cover the grating structure, wherein the cladding layer has a third refractive index n3.Type: GrantFiled: February 28, 2020Date of Patent: March 30, 2021Assignees: Mitsubishi Electric Research Laboratories, Inc., Mitsubishi Electric CorporationInventors: Keisuke Kojima, Mitsunobu Gotoda, Toshiaki Koike-Akino, Muhammad Tahersima
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Publication number: 20210064013Abstract: A scanner for image reconstruction of a structure of a target object uses a neural network trained to classify each segment of a sequence of segments of a modified wave into one or multiple classes. The sequence of segments corresponds to the sequence of layers of the target object, such that a segment of modified wave corresponds to a layer having the same index in the sequence of layers as an index of the segment in the sequence of segments. The scanner executes the neural network for each wave modified by penetration through the layers of the target object to produce the classes of segments of the modified waves. Next, the scanner selects the classes of segments of different modified waves corresponding to the same layer to produce an image of the layer of the target object with pixel values being functions of labels of the selected classes.Type: ApplicationFiled: August 27, 2019Publication date: March 4, 2021Applicant: Mitsubishi Electric Research Laboratories, Inc.Inventors: Pu Wang, Toshiaki Koike-Akino, Philip Orlik, Arindam Bose
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Patent number: 10921525Abstract: A grating coupler having first and second ends for coupling a light beam to a waveguide of a chip includes a substrate configured to receive the light beam from the first end and transmit the light beam through the second end, the substrate having a first refractive index n1, a grating structure having curved grating lines arranged on the substrate, the grating structure having a second refractive index n1, wherein the curved grating lines have line width w and height d and are arranged by a pitch ?, wherein the second refractive index n2 is less than first refractive index n1, and a cladding layer configured to cover the grating structure, wherein the cladding layer has a third refractive index n3.Type: GrantFiled: January 29, 2019Date of Patent: February 16, 2021Assignees: Mitsubishi Electric Research Laboratories, Inc., Mitsubishi Electric CorporationInventors: Keisuke Kojima, Mitsunobu Gotoda, Toshiaki Koike-Akino, Mohammad Tahersima
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Patent number: 10862621Abstract: A transmitter for transmitting an encoded codeword over a communication channel includes a source to accept source data, an irregular polar encoder operated by a processor to encode the source data with at least one polar code to produce the encoded codeword, a modulator to modulate the encoded codeword, and a front end to transmit the modulated and encoded codeword over the communication channel. The polar code is specified by a set of regular parameters including one or combination of parameters defining a number of data bits in the codeword, a parameter defining a data index set specifying locations of frozen bits in the encoded codeword, and a parameter defining a number of parity bits in the encoded codeword.Type: GrantFiled: January 30, 2019Date of Patent: December 8, 2020Assignee: Mitsubishi Electric Research Laboratories, Inc.Inventors: Toshiaki Koike-Akino, Ye Wang, Stark C Draper