Patents by Inventor Koichiro Gomi
Koichiro Gomi 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: 11265030Abstract: An object to be achieved by an embodiment of the present invention is to provide a radar apparatus, a signal processing apparatus, and a method that reduce interference caused to a reception signal by a transmission signal during transmission of a signal. To achieve the above object, a radar apparatus of an embodiment includes: a transmitter configured to transmit a pulse signal; a receiver configured to receive a reception signal including a first signal as the pulse signal reflected by an observation target and an interference signal provided in accordance with the pulse signal; and a processor configured to generate a separated signal in which the reception signal is, on a time axis, separated into a first component corresponding to the first signal and an interference component corresponding to the interference signal by using a first reference signal generated based on the pulse signal and reduce the interference component.Type: GrantFiled: September 3, 2020Date of Patent: March 1, 2022Assignee: KABUSHIKI KAISHA TOSHIBAInventors: Koichiro Gomi, Tomomi Aoki, Keiichi Yamaguchi
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Publication number: 20210105033Abstract: An object to be achieved by an embodiment of the present invention is to provide a radar apparatus, a signal processing apparatus, and a method that reduce interference caused to a reception signal by a transmission signal during transmission of a signal. To achieve the above object, a radar apparatus of an embodiment includes: a transmitter configured to transmit a pulse signal; a receiver configured to receive a reception signal including a first signal as the pulse signal reflected by an observation target and an interference signal provided in accordance with the pulse signal; and a processor configured to generate a separated signal in which the reception signal is, on a time axis, separated into a first component corresponding to the first signal and an interference component corresponding to the interference signal by using a first reference signal generated based on the pulse signal and reduce the interference component.Type: ApplicationFiled: September 3, 2020Publication date: April 8, 2021Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Koichiro GOMI, Tomomi AOKI, Keiichi YAMAGUCHI
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Patent number: 10164307Abstract: According to one embodiment, a waveguide bend includes a metal block. The metal block includes a first waveguide, a second waveguide and a third waveguide. The first waveguide, the second waveguide and the third waveguide are integrally formed. The second waveguide includes a bend at which a propagation direction of a radio wave is changed. An opening size of the second waveguide is smaller than an opening size of the first waveguide. The third waveguide is provided between the first waveguide and the second waveguide. An opening size of the third waveguide is smaller than the opening size of the first waveguide and is larger than the opening size of the second waveguide.Type: GrantFiled: July 19, 2016Date of Patent: December 25, 2018Assignee: KABUSHIKI KAISHA TOSHIBAInventors: Koichiro Gomi, Tooru Kijima
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Publication number: 20170269206Abstract: A radar apparatus according to an embodiment of the present invention includes an oversampler, a weight vector calculator, a meteorological parameter calculator, an error influence degree calculator, and an error reducer. The oversampler performs oversampling on a received signal to acquire a sampling signal. The weight vector calculator calculates a weight vector based on the sampling signal and a waveform information matrix. The meteorological parameter calculator calculates an estimated value of a meteorological parameter on an observation target based on the vector and the matrix. The error influence degree calculator selects a first observation target considering an estimated error included in the estimated value, or an error influence degree based on the estimated error. The error reducer subtracts an estimated error that the first observation target gives to an estimated value of a meteorological parameter on a second observation target, from the estimated value on the second observation target.Type: ApplicationFiled: December 29, 2016Publication date: September 21, 2017Inventors: Tomomi AOKI, Kazuaki KAWABATA, Koichiro GOMI, Shigeru HIURA
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Publication number: 20170269194Abstract: A signal processing device in accordance with one aspect of the present invention includes a first signal processor, a second signal processor, and a signal generator. The first signal processor is configured to generate a first signal by signal processing based on a first window function, a reference signal, and a reception signal. The second signal processor is configured to generate a second signal by signal processing based on a second window function, the reference signal, and the reception signal. The signal generator is configured to generate a third signal based on at least the first signal and the second signal.Type: ApplicationFiled: December 29, 2016Publication date: September 21, 2017Inventors: Koichiro GOMI, Shigeru HIURA, Tomomi AOKI, Kazuaki KAWABATA
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Publication number: 20170025726Abstract: According to one embodiment, a waveguide bend includes a metal block. The metal block includes a first waveguide, a second waveguide and a third waveguide. The first waveguide, the second waveguide and the third waveguide are integrally formed. The second waveguide includes a bend at which a propagation direction of a radio wave is changed. An opening size of the second waveguide is smaller than an opening size of the first waveguide. The third waveguide is provided between the first waveguide and the second waveguide. An opening size of the third waveguide is smaller than the opening size of the first waveguide and is larger than the opening size of the second waveguide.Type: ApplicationFiled: July 19, 2016Publication date: January 26, 2017Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Koichiro GOMI, Tooru KIJIMA
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Patent number: 9105953Abstract: A high frequency line-waveguide converter is provided which includes a first substrate including a first dielectric layer, a first conductive layer formed on a surface of the first dielectric layer, and a conductive pattern formed on the surface of the first dielectric layer that surrounds the second conductive layer. An antenna formed on a bottom surface of the first dielectric layer at a fixed interval from the second conductive layer. The high frequency line-waveguide converter also includes a second substrate including a third conductive layer and a fourth conductive layer separated by a second dielectric layer. An adhesion layer formed between the first substrate and second substrate, a shield conductive part formed by multiple vias between the conductive pattern and the fourth conductive layer, and a conductive waveguide in contact with the fourth conductive layer.Type: GrantFiled: September 7, 2012Date of Patent: August 11, 2015Assignee: Kabushiki Kaisha ToshibaInventor: Koichiro Gomi
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Publication number: 20130258618Abstract: A module has a circuit board having a through-hole which separates a transmitter for transmitting the high frequency signal and a receiver for receiving the high frequency signal, both on the circuit board. The circuit board includes an insulating layer and a wiring layer. The wiring layer is formed in the ends of the insulating layer. A cover shields the transmitter and the receiver and has a partition part. The partition part is electrically connected with the wiring layer and has a groove portion communicating with the through-hole, and is electrically connected with the wiring layer at the periphery of the through-hole. The depth of the groove portion L from a contact surface with the wiring layer satisfies L=nĂ—?/2 Where, n is a natural number and ? is a wavelength of the high-frequency signal.Type: ApplicationFiled: March 7, 2013Publication date: October 3, 2013Applicant: Kabushiki Kaisha ToshibaInventor: Koichiro GOMI
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Publication number: 20130082899Abstract: A high frequency line-waveguide converter is provided which includes a first substrate including a first dielectric layer, a first conductive layer formed on a surface of the first dielectric layer, and a conductive pattern formed on the surface of the first dielectric layer that surrounds the second conductive layer. An antenna formed on a bottom surface of the first dielectric layer at a fixed interval from the second conductive layer. The high frequency line-waveguide converter also includes a second substrate including a third conductive layer and a fourth conductive layer separated by a second dielectric layer. An adhesion layer formed between the first substrate and second substrate, a shield conductive part formed by multiple vias between the conductive pattern and the fourth conductive layer, and a conductive waveguide in contact with the fourth conductive layer.Type: ApplicationFiled: September 7, 2012Publication date: April 4, 2013Applicant: KABUSHIKI KAISHA TOSHIBAInventor: Koichiro Gomi