Patents by Inventor Shinichi Hori
Shinichi Hori 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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Publication number: 20230198654Abstract: A transmitting apparatus according to the present disclosure includes: a digital baseband unit configured to separate a baseband signal into an in-phase component and a quadrature component, and output the in-phase and quadrature components; an outphasing signal generation unit configured to generate first and second outphasing signals based on the in-phase and quadrature components; and a time-division combining unit configured to generate a time-division combined signal by combining the first and second outphasing signals in a time-division manner.Type: ApplicationFiled: September 21, 2022Publication date: June 22, 2023Applicant: NEC CorporationInventors: Yuma KASE, Shinichi Hori
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Patent number: 11601319Abstract: A digital modulator according to the present disclosure includes a polar converter that generates a phase signal and an amplitude signal from a baseband signal, an RF phase signal generator that generates an RF phase signal on the basis of the phase signal, a rectangulating unit that generates a rectangular RF phase signal by converting the RF phase signal into a rectangular shape, a time interleaver that time interleaves the amplitude signal and outputs first and second time interleaved signals, a ?? modulator that ?? modulates the first and second time interleaved signals on the basis of the rectangular RF phase signal and outputs first and second ?? modulated signals, and a selector that selects and outputs one of the first and second ?? modulated signals on the basis of the rectangular RF phase signal.Type: GrantFiled: January 18, 2022Date of Patent: March 7, 2023Assignee: NEC CORPORATIONInventor: Shinichi Hori
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Patent number: 11509393Abstract: An optical wireless transmission system 10 includes a transmission device including at least one memory storing instructions, and at least one processor configured to execute the instructions to; generate a plurality of digital outphasing signals; orthogonally modulate the digital outphasing signals at an intermediate frequency; and set an intermediate frequency for satisfying a specified signal-to-distortion power ratio based on a sampling frequency, wherein the digital outphasing signals are orthogonally modulated at the intermediate frequency; a hardware optical fiber module configured to convert orthogonally modulated digital electrical signals into optical signals, transmit the optical signals through an optical fiber, and convert the optical signals into digital electrical signals; and a remote unit configured to combine the digital electrical signals transmitted by the hardware optical fiber module, and transmit a combined signal as a radio signal.Type: GrantFiled: February 9, 2021Date of Patent: November 22, 2022Assignee: NEC CORPORATIONInventors: Shinichi Hori, Yuma Kase
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Publication number: 20220239544Abstract: A digital modulator according to the present disclosure includes a polar converter that generates a phase signal and an amplitude signal from a baseband signal, an RF phase signal generator that generates an RF phase signal on the basis of the phase signal, a rectangulating unit that generates a rectangular RF phase signal by converting the RF phase signal into a rectangular shape, a time interleaver that time interleaves the amplitude signal and outputs first and second time interleaved signals, a ?? modulator that ?? modulates the first and second time interleaved signals on the basis of the rectangular RF phase signal and outputs first and second ?? modulated signals, and a selector that selects and outputs one of the first and second ?? modulated signals on the basis of the rectangular RF phase signal.Type: ApplicationFiled: January 18, 2022Publication date: July 28, 2022Applicant: NEC CorporationInventor: Shinichi HORI
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Publication number: 20220149939Abstract: An optical wireless transmission system 10 includes a transmission device including at least one memory storing instructions, and at least one processor configured to execute the instructions to; generate a plurality of digital outphasing signals; orthogonally modulate the digital outphasing signals at an intermediate frequency; and set an intermediate frequency for satisfying a specified signal-to-distortion power ratio based on a sampling frequency, wherein the digital outphasing signals are orthogonally modulated at the intermediate frequency; a hardware optical fiber module configured to convert orthogonally modulated digital electrical signals into optical signals, transmit the optical signals through an optical fiber, and convert the optical signals into digital electrical signals; and a remote unit configured to combine the digital electrical signals transmitted by the hardware optical fiber module, and transmit a combined signal as a radio signal.Type: ApplicationFiled: February 9, 2021Publication date: May 12, 2022Applicant: NEC CorporationInventors: Shinichi HORI, Yuma KASE
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Patent number: 11290165Abstract: This transmitter is provided with: a digital delay circuit which delays a 1-bit digital RF signal on the basis of another 1-bit digital RF signal; an amplifier which amplifies a signal output by the digital delay circuit; and a band-pass filter which allows signals in a prescribed frequency band, from among signals output by the amplifier, to pass. A signal output by the band-pass filter is input into a corresponding one antenna element from among a plurality of antenna elements, and controls the directionality of a beam formed by the plurality of antenna elements.Type: GrantFiled: September 20, 2017Date of Patent: March 29, 2022Assignee: NEC CORPORATIONInventors: Masaaki Tanio, Shinichi Hori, Tomoyuki Yamase
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Patent number: 11196506Abstract: An interference signal generation device includes a first converter configured to perform conversion on a frequency of an input signal based on a center frequency of a frequency band to be interfered, and a second converter configured to further perform conversion on a frequency of an output signal of the first converter based on the center frequency.Type: GrantFiled: September 21, 2018Date of Patent: December 7, 2021Assignee: NEC CORPORATIONInventors: Naoki Oshima, Shinichi Hori
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Publication number: 20210297125Abstract: This transmitter is provided with: a digital delay circuit which delays a 1-bit digital RF signal on the basis of another 1-bit digital RF signal; an amplifier which amplifies a signal output by the digital delay circuit; and a band-pass filter which allows signals in a prescribed frequency band, from among signals output by the amplifier, to pass. A signal output by the band-pass filter is input into a corresponding one antenna element from among a plurality of antenna elements, and controls the directionality of a beam formed by the plurality of antenna elements.Type: ApplicationFiled: September 20, 2017Publication date: September 23, 2021Applicant: NEC CorporationInventors: Masaaki TANIO, Shinichi HORI, Tomoyuki YAMASE
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Publication number: 20200266915Abstract: An interference signal generation device includes a first converter configured to perform conversion on a frequency of an input signal based on a center frequency of a frequency band to be interfered, and a second converter configured to further perform conversion on a frequency of an output signal of the first converter based on the center frequency.Type: ApplicationFiled: September 21, 2018Publication date: August 20, 2020Applicant: NEC CorporationInventors: Naoki OSHIMA, Shinichi HORI
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Patent number: 10738184Abstract: Provided is an EVOH resin pellet which is capable of reducing the occurrence of fish eyes in a melt molded article of an EVOH resin. The occurrence of fish eyes in a melt molded article such as a film that is produced by melt molding using pellets is able to be suppressed by setting the abundance of a conjugated polyene in a surface portion of the pellet to an intended amount or more.Type: GrantFiled: October 27, 2016Date of Patent: August 11, 2020Assignee: MITSUBISHI CHEMICAL CORPORATIONInventors: Ryuta Seno, Shinichi Hori, Nobuaki Sato
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Patent number: 10574199Abstract: The purpose of the present invention is to provide an amplifier having high signal-to-noise ratio of a transmitted signal and high electrical efficiency. Another purpose is to suppress complexity of amplifier's wiring connecting a signal generator that generates a binary digital signal and an amplification unit that amplifies the same. This amplifier generates a binary digital signal. The amplifier further generates a K-value digital signal (K is an integer greater than or equal to 3) from the binary digital signal and generating a plurality of binary digital signals from the K-value digital signal. The amplifier amplifies each of the plurality of binary digital signals, and combines the plurality of amplified binary digital signals and generating a combined signal having a substantially proportional relationship with the K-value digital signal.Type: GrantFiled: November 8, 2016Date of Patent: February 25, 2020Assignee: NEC CORPORATIONInventors: Shinichi Hori, Tomoyuki Yamase, Masaaki Tanio
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Patent number: 10370468Abstract: Provided is EVOH resin pellet capable of suppressing the occurrence of fish eye even in a resultant monolayer film, and the method for producing the same. The EVOH resin pellet contains a boron compound and the boron amount in a surface portion of the pellet is 1.7 ppm or less. After the EVOH resin pellet is made to contain the boron compound, the EVOH resin pellet is rinsed with a mixture of water and alcohol so that the amount of the boron compound in a surface portion can be reduced.Type: GrantFiled: October 11, 2016Date of Patent: August 6, 2019Assignee: MITSUBISHI CHEMICAL CORPORATIONInventors: Shinichi Hori, Nobuyuki Yamamoto, Takuya Nakajima
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Patent number: 10284400Abstract: This ?? modulator is a ?? modulator using multiple integrators. The integrator: includes a plurality of stages of adder sequences, each of the adder sequences including a plurality of adders connected in series; performs feedback of a result of a second adder sequence as an input to a first adder sequence, the first adder sequence being a first stage of the plurality of stages, and the second adder sequence being a last stage of the plurality of stages; and processes inputs supplied to the plurality of adders of the first adder sequence and supplies it to the second adder sequence.Type: GrantFiled: September 1, 2015Date of Patent: May 7, 2019Assignee: NEC CORPORATIONInventors: Masaaki Tanio, Tomoyuki Yamase, Shinichi Hori
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Patent number: 10188847Abstract: A medical device which absorbs a difference in dimension between the members, can be applied to an existing device without generating a dead space in a flow path of a therapeutic substance when administrating the therapeutic substance, and is high in versatility. The medical device includes a feeding member, a connected member and a joint member, and the joint member includes an inner tapered portion and an outer tapered portion, the joint member is configured so that the tip end of the joint member is located on the inner tapered connecting portion when the joint member is connected to the hub.Type: GrantFiled: December 26, 2014Date of Patent: January 29, 2019Assignee: HI-LEX CORPORATIONInventors: Hidekazu Tohse, Junji Fujita, Akihiro Ametani, Akihisa Ishii, Shinichi Hori, Atsushi Hori
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Patent number: 10187092Abstract: In a digital transmitter, a digital RF signal generation unit executes digital modulation on I and Q signals to convert the I and Q signal into first and second digital RF signals, respectively, with a bit rate which is twice a carrier frequency. A retiming unit delays the first digital RF signal according to a clock signal with a frequency which is 4n times (n is an integer) the carrier frequency to output the delayed first digital RF signal and delays the phase of the second digital RF signal by 90 degrees with respect to an output of the first digital RF signal to output the delayed second digital RF signal. First and second amplifiers amplify the first and second digital RF signals output by the retiming unit, respectively. A combiner combines the amplified first and second digital RF signals to generate one signal sequence.Type: GrantFiled: September 23, 2016Date of Patent: January 22, 2019Assignee: NEC CORPORATIONInventors: Masaaki Tanio, Shinichi Hori, Tomoyuki Yamase
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Publication number: 20180346620Abstract: Provided is EVOH resin pellet capable of suppressing the occurrence of fish eye even in a resultant monolayer film, and the method for producing the same. The EVOH resin pellet contains a boron compound and the boron amount in a surface portion of the pellet is 1.7 ppm or less. After the EVOH resin pellet is made to contain the boron compound, the EVOH resin pellet is rinsed with a mixture of water and alcohol so that the amount of the boron compound in a surface portion can be reduced.Type: ApplicationFiled: October 11, 2016Publication date: December 6, 2018Applicant: THE NIPPON SYNTHETIC CHEMICAL INDUSTRY CO., LTD.Inventors: Shinichi HORI, Nobuyuki YAMAMOTO, Takuya NAKAJIMA
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Patent number: 10143041Abstract: Provided are a wireless access system provided with a remote unit capable of handling a high-frequency region without being made complicated, and a control method for the same. A wireless access system according to the present invention is provided with: a center unit (1); and a remote unit (3) that converts a baseband signal generated by the center unit (1) into a high-frequency signal and emits the high-frequency signal from an antenna (12). The center unit (1) includes a 1-bit modulator (5) that converts the baseband signal into a 1-bit signal on the basis of a generated clock signal and outputs the 1-bit signal.Type: GrantFiled: March 7, 2016Date of Patent: November 27, 2018Assignee: NEC CORPORATIONInventors: Shinichi Hori, Tomoyuki Yamase
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Publication number: 20180331665Abstract: The purpose of the present invention is to provide an amplifier having high signal-to-noise ratio of a transmitted signal and high electrical efficiency. Another purpose is to suppress complexity of amplifier's wiring connecting a signal generator that generates a binary digital signal and an amplification unit that amplifies the same. This amplifier generates a binary digital signal. The amplifier further generates a K-value digital signal (K is an integer greater than or equal to 3) from the binary digital signal and generating a plurality of binary digital signals from the K-value digital signal. The amplifier amplifies each of the plurality of binary digital signals, and combines the plurality of amplified binary digital signals and generating a combined signal having a substantially proportional relationship with the K-value digital signal.Type: ApplicationFiled: November 8, 2016Publication date: November 15, 2018Applicant: NEC CorporationInventors: Shinichi HORI, Tomoyuki YAMASE, Masaaki TANIO
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Publication number: 20180319965Abstract: Provided is an EVOH resin pellet which is capable of reducing the occurrence of fish eyes in a melt molded article of an EVOH resin. The occurrence of fish eyes in a melt molded article such as a film that is produced by melt molding using pellets is able to be suppressed by setting the abundance of a conjugated polyene in a surface portion of the pellet to an intended amount or more.Type: ApplicationFiled: October 27, 2016Publication date: November 8, 2018Applicant: THE NIPPON SYNTHETIC CHEMICAL INDUSTRY CO., LTD.Inventors: Ryuta SENO, Shinichi HORI, Nobuaki SATO
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Publication number: 20180262219Abstract: In a digital transmitter, a digital RF signal generation unit executes digital modulation on I and Q signals to convert the I and Q signal into first and second digital RF signals , respectively, with a bit rate which is twice a carrier frequency. A retiming unit delays the first digital RF signal according to a clock signal with a frequency which is 4n times (n is an integer) the carrier frequency to output the delayed first digital RF signal and delays the phase of the second digital RF signal by 90 degrees with respect to an output of the first digital RF signal to output the delayed second digital RF signal. First and second amplifiers amplify the first and second digital RF signals output by the retiming unit, respectively. A combiner combines the amplified first and second digital RF signals to generate one signal sequence.Type: ApplicationFiled: September 23, 2016Publication date: September 13, 2018Applicant: NEC CorporationInventors: Masaaki TANIO, Shinichi HORI, Tomoyuki YAMASE