Patents by Inventor Kiyotaka Kobayashi
Kiyotaka Kobayashi 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).
-
Publication number: 20200266930Abstract: A transmitter apparatus wherein a simple structure is used to successfully suppress the degradation of error rate performance that otherwise would be caused by fading or the like. There are included encoding parts that encode transport data; a mapping part that performs such a mapping that encoded data sequentially formed by the encoding parts are not successively included in the same symbol, thereby forming data symbols; and a symbol interleaver that interleaves the data symbols. In this way, a low computational complexity can be used to perform an interleaving process equivalent to a bit interleaving process to effectively improve the reception quality at a receiving end.Type: ApplicationFiled: April 27, 2020Publication date: August 20, 2020Inventors: Yutaka MURAKAMI, Shutai OKAMURA, Kiyotaka KOBAYASHI, Masayuki ORIHASHI, Kazuaki TAKAHASHI
-
Patent number: 10698359Abstract: An image forming apparatus includes an image bearing member and a static elimination device. The static elimination device irradiates static elimination light onto a circumferential surface of the image bearing member. The image bearing member includes a conductive substrate and a single-layer photosensitive layer. The photosensitive layer contains a charge generating material, a hole transport material, an electron transport material, and a binder resin. The static elimination light has a wavelength of at least 600 nm and no greater than 800 nm. The photosensitive layer has an optical absorption coefficient of at least 600 cm?1 and no greater than 1,500 cm?1 with respect to light having a wavelength of 660 nm.Type: GrantFiled: July 9, 2019Date of Patent: June 30, 2020Assignee: KYOCERA Document Solutions Inc.Inventors: Toshiki Fujita, Ikuo Makie, Masahito Ishino, Nariaki Tanaka, Kiyotaka Kobayashi
-
Patent number: 10680752Abstract: A transmitter apparatus wherein a simple structure is used to successfully suppress the degradation of error rate performance that otherwise would be caused by fading or the like. There are included encoding parts that encode transport data; a mapping part that performs such a mapping that encoded data sequentially formed by the encoding parts are not successively included in the same symbol, thereby forming data symbols; and a symbol interleaver that interleaves the data symbols. In this way, a low computational complexity can be used to perform an interleaving process equivalent to a bit interleaving process to effectively improve the reception quality at a receiving end.Type: GrantFiled: June 13, 2017Date of Patent: June 9, 2020Assignee: Panasonic Intellectual Property Corporation of AmericaInventors: Yutaka Murakami, Shutai Okamura, Kiyotaka Kobayashi, Masayuki Orihashi, Kazuaki Takahashi
-
Patent number: 10635013Abstract: An image forming apparatus includes an image bearing member, a charger, and a cleaning member. The charger charges a circumferential surface of the image bearing member to a positive polarity. The cleaning member is pressed against the circumferential surface of the image bearing member and collects a toner remaining on the circumferential surface of the image bearing member. A linear pressure N of the cleaning member on the circumferential surface of the image bearing member is at least 14 N/m and no greater than 40 N/m. A rebound resilience R of the cleaning member at a temperature of 25° C. is at least 38%. The leaner pressure N and the rebound resilience R satisfy mathematical formula (1A). The image bearing member satisfies mathematical formula (1B). R < 13.771 × N 0.4043 ( 1 ? A ) 0.Type: GrantFiled: July 9, 2019Date of Patent: April 28, 2020Assignee: KYOCERA Document Solutions Inc.Inventors: Masahito Ishino, Nariaki Tanaka, Toshiki Fujita, Teppei Shibuya, Kiyotaka Kobayashi
-
Publication number: 20200112463Abstract: Modulated signal A is transmitted from a first antenna, and modulated signal B is transmitted from a second antenna. As modulated signal B, modulated symbols S2(i) and S2(i+1) obtained from different data are transmitted at time i and time i+1 respectively. In contrast, as modulated signal A, modulated symbols S1(i) and S1(i)? obtained by changing the signal point arrangement of the same data are transmitted at time i and time i+1 respectively. As a result the reception quality can be changed intentionally at time i and time i+1, and therefore using the demodulation result of modulated signal A of a time when the reception quality is good enables both modulated signals A and B to be demodulated with good error rate performances.Type: ApplicationFiled: December 10, 2019Publication date: April 9, 2020Inventors: Yutaka MURAKAMI, Kiyotaka Kobayashi, Masayuki Orihashi, Akihiko Matsuoka
-
Publication number: 20200041923Abstract: An image forming apparatus includes an image bearing member, a charger, and a cleaning member. The charger charges a circumferential surface of the image bearing member to a positive polarity. The cleaning member is pressed against the circumferential surface of the image bearing member and collects a toner remaining on the circumferential surface of the image bearing member. A linear pressure N of the cleaning member on the circumferential surface of the image bearing member is at least 14 N/m and no greater than 40 N/m. A rebound resilience R of the cleaning member at a temperature of 25° C. is at least 38%. The leaner pressure N and the rebound resilience R satisfy mathematical formula (1A). The image bearing member satisfies mathematical formula (1B) R < 13.771 × N 0.4043 ( 1 ? A ) 0.Type: ApplicationFiled: July 9, 2019Publication date: February 6, 2020Applicant: KYOCERA Document Solutions Inc.Inventors: Masahito ISHINO, Nariaki TANAKA, Toshiki FUJITA, Teppei SHIBUYA, Kiyotaka KOBAYASHI
-
Publication number: 20200041949Abstract: An image forming apparatus includes an image bearing member, a charger, and a cleaning member. The charger charges a circumferential surface of the image bearing member to a positive polarity. The cleaning member is pressed against the circumferential surface of the image bearing member and collects a toner remaining on the circumferential surface of the image bearing member. A linear pressure of the cleaning member on the circumferential surface of the image bearing member is at least 10 N/m and no greater than 40 N/m. The image bearing member includes a conductive substrate and a single-layer photosensitive layer. The single-layer photosensitive layer contains a charge generating material, a hole transport material, an electron transport material, and a binder resin. The image bearing member satisfies formula (1) 0.60 ? V ( Q / S ) × ( d / ? r · ? 0 ) .Type: ApplicationFiled: July 9, 2019Publication date: February 6, 2020Applicant: KYOCERA Document Solutions Inc.Inventors: Masahito ISHINO, Nariaki TANAKA, Toshiki FUJITA, Teppei SHIBUYA, Kiyotaka KOBAYASHI
-
Publication number: 20200041950Abstract: An image forming apparatus includes an image bearing member and a static elimination device. The static elimination device irradiates static elimination light onto a circumferential surface of the image bearing member. The image bearing member includes a conductive substrate and a single-layer photosensitive layer. The photosensitive layer contains a charge generating material, a hole transport material, an electron transport material, and a binder resin. The static elimination light has a wavelength of at least 600 nm and no greater than 800 nm. The photosensitive layer has an optical absorption coefficient of at least 600 cm?1 and no greater than 1,500 cm?1 with respect to light having a wavelength of 660 nm.Type: ApplicationFiled: July 9, 2019Publication date: February 6, 2020Applicant: KYOCERA Document Solutions Inc.Inventors: Toshiki FUJITA, Ikuo MAKIE, Masahito ISHINO, Nariaki TANAKA, Kiyotaka KOBAYASHI
-
Publication number: 20200041917Abstract: In an image forming apparatus, a cleaning member is pressed against a circumferential surface of an image bearing member and collects a toner remaining on the circumferential surface of the image bearing member. The toner has a number average roundness of 0.965 to 0.998. The toner has a D50 of 4.0 ?m to 7.0 ?m. A linear pressure of the cleaning member on the circumferential surface of the image bearing member is 10 N/m to 40 N/m. The image bearing member includes a single-layer photosensitive layer containing a charge generating material and a hole transport material. Ionization potential IpHTM of the hole transport material and ionization potential IpCGM of the charge generating material satisfy mathematical formula (1) “IpHTM?5.30 eV”, mathematical formula (2) “IpCGM?5.30 eV”, and mathematical formula (3) “0.09 eV?|IpHTM?IpCGM|?0.30 eV”.Type: ApplicationFiled: July 9, 2019Publication date: February 6, 2020Applicant: KYOCERA Document Solutions Inc.Inventors: Toshiki FUJITA, Nariaki TANAKA, Masahito ISHINO, Kiyotaka KOBAYASHI
-
Patent number: 10547479Abstract: Modulated signal A is transmitted from a first antenna, and modulated signal B is transmitted from a second antenna. As modulated signal B, modulated symbols S2(i) and S2(i+1) obtained from different data are transmitted at time i and time i+1 respectively. In contrast, as modulated signal A, modulated symbols S1(i) and S1(i)? obtained by changing the signal point arrangement of the same data are transmitted at time i and time i+1 respectively. As a result the reception quality can be changed intentionally at time i and time i+1, and therefore using the demodulation result of modulated signal A of a time when the reception quality is good enables both modulated signals A and B to be demodulated with good error rate performances.Type: GrantFiled: March 8, 2019Date of Patent: January 28, 2020Assignee: Panasonic Intellectual Property Corporation of AmericaInventors: Yutaka Murakami, Kiyotaka Kobayashi, Masayuki Orihashi, Akihiko Matsuoka
-
Patent number: 10523284Abstract: A transmission apparatus includes processing circuitry that generates a first data sequence representing first data or a second data sequence representing second data different from the first data and selects the first data sequence as an output data sequence. A modulation scheme is determined from a plurality of modulation schemes, and the output data sequence is modulated with the determined modulation scheme. Transmission circuitry transmits the modulated output data sequence. A first time interval associated with selecting the first data sequence for the output data sequence is longer than a second time interval associated with determining the determined modulation scheme.Type: GrantFiled: March 6, 2019Date of Patent: December 31, 2019Assignee: Wi-Fi One, LLCInventors: Yutaka Murakami, Kiyotaka Kobayashi, Masayuki Orihashi, Akihiko Matsuoka
-
Publication number: 20190280713Abstract: In a multi-antenna communication system using LDPC codes, a simple method is used to effectively improve the received quality by performing a retransmittal of less data without restricting applicable LDPC codes. In a case of a non-retransmittal, a multi-antenna transmitting apparatus transmits, from two antennas, LDPC encoded data formed by LDPC encoding blocks. In a case of a retransmittal, the multi-antenna transmitting apparatus uses a transmission method, in which the diversity gain is higher than in the previous transmission, to transmit only a part of the LDPC encoded data as previously transmitted. For example, the only the part of the LDPC encoded data to be re-transmitted is transmitted from the single antenna.Type: ApplicationFiled: May 24, 2019Publication date: September 12, 2019Inventors: Yutaka MURAKAMI, Kiyotaka KOBAYASHI, Choo Eng YAP
-
Patent number: 10379209Abstract: A radar device includes: a transmission beam controller that selects, every first period, a transmission beam set used for transmission of a radar signal from among a plurality of transmission beam sets each including at least two transmission beam directions; and a radar transmitter that transmits the radar signal in a predetermined transmission period by using the selected transmission beam set, wherein the transmission beam controller switching, every second period within the first period, among the at least two transmission beam directions included in the transmission beam set.Type: GrantFiled: September 4, 2015Date of Patent: August 13, 2019Assignee: Panasonic Intellectual Property Management Co., Ltd.Inventors: Takaaki Kishigami, Tadashi Morita, Kiyotaka Kobayashi
-
Patent number: 10355710Abstract: In a multi-antenna communication system using LDPC codes, a simple method is used to effectively improve the received quality by performing a retransmittal of less data without restricting applicable LDPC codes. In a case of a non-retransmittal, a multi-antenna transmitting apparatus transmits, from two antennas, LDPC encoded data formed by LDPC encoding blocks. In a case of a retransmittal, the multi-antenna transmitting apparatus uses a transmission method, in which the diversity gain is higher than in the previous transmission, to transmit only a part of the LDPC encoded data as previously transmitted. For example, the only the part of the LDPC encoded data to be re-transmitted is transmitted from the single antenna.Type: GrantFiled: November 9, 2017Date of Patent: July 16, 2019Assignee: Panasonic Intellectual Property Corporation of AmericaInventors: Yutaka Murakami, Kiyotaka Kobayashi, Choo Eng Yap
-
Publication number: 20190207791Abstract: Modulated signal A is transmitted from a first antenna, and modulated signal B is transmitted from a second antenna. As modulated signal B, modulated symbols S2(i) and S2(i+1) obtained from different data are transmitted at time i and time i+1 respectively. In contrast, as modulated signal A, modulated symbols S1(i) and S1(i)? obtained by changing the signal point arrangement of the same data are transmitted at time i and time i+1 respectively. As a result the reception quality can be changed intentionally at time i and time i+1, and therefore using the demodulation result of modulated signal A of a time when the reception quality is good enables both modulated signals A and B to be demodulated with good error rate performances.Type: ApplicationFiled: March 8, 2019Publication date: July 4, 2019Inventors: Yutaka MURAKAMI, Kiyotaka KOBAYASHI, Masayuki ORIHASHI, Akihiko MATSUOKA
-
Publication number: 20190199409Abstract: A transmission apparatus includes processing circuitry that generates a first data sequence representing first data or a second data sequence representing second data different from the first data and selects the first data sequence as an output data sequence. A modulation scheme is determined from a plurality of modulation schemes, and the output data sequence is modulated with the determined modulation scheme. Transmission circuitry transmits the modulated output data sequence. A first time interval associated with selecting the first data sequence for the output data sequence is longer than a second time interval associated with determining the determined modulation scheme.Type: ApplicationFiled: March 6, 2019Publication date: June 27, 2019Inventors: Yutaka MURAKAMI, Kiyotaka KOBAYASHI, Masayuki ORIHASHI, Akihiko MATSUOKA
-
Patent number: 10310441Abstract: In an image forming apparatus, a resistance component of an inner impedance of an electricity removing member is equal to or lower than a value that is obtained by multiplying a calculated resistance value by a first specific value, the calculated resistance value being calculated based on a predetermined formula as a DC resistance value of the electricity removing member that is required to reduce a pre-electricity-removal potential of a photoconductor to a predetermined post-electricity-removal potential during an electricity removal time, the first specific value being calculated based on a ratio of a linear speed of the electricity removing member to a linear speed of the photoconductor, and a resistance component of the contact impedance of the electricity removing member is equal to or lower than a value that is obtained by multiplying the calculated resistance value by a second specific value that is calculated based on the ratio.Type: GrantFiled: January 12, 2018Date of Patent: June 4, 2019Assignee: KYOCERA Document Solutions Inc.Inventors: Shingo Sakato, Nariaki Tanaka, Kiyotaka Kobayashi, Hiroka Itani, Takuji Watanabe, Eriko Hayashi
-
Patent number: 10277436Abstract: Modulated signal A is transmitted from a first antenna, and modulated signal B is transmitted from a second antenna. As modulated signal B, modulated symbols S2(i) and S2(i+1) obtained from different data are transmitted at time i and time i+1 respectively. In contrast, as modulated signal A, modulated symbols S1(i) and S1(i)? obtained by changing the signal point arrangement of the same data are transmitted at time i and time i+1 respectively. As a result the reception quality can be changed intentionally at time i and time i+1, and therefore using the demodulation result of modulated signal A of a time when the reception quality is good enables both modulated signals A and B to be demodulated with good error rate performances.Type: GrantFiled: February 22, 2018Date of Patent: April 30, 2019Assignee: Panasonic Intellectual Property Corporation of AmericaInventors: Yutaka Murakami, Kiyotaka Kobayashi, Masayuki Orihashi, Akihiko Matsuoka
-
Patent number: 10270574Abstract: A transmission apparatus maps a first stream of input data to first complex symbols in serial format and convert them into first complex symbols in parallel format. They are inverse Fourier transformed into OFDM signals associated with multiple subcarriers that are transmitted via a first antenna over the multiple subcarriers in a same frequency band over a same time period that includes a same set of time slots. First pilot information is transmitted via a first antenna on a first one of a plurality of pilot subcarriers during the same set of time slots, and second pilot information is sent via a first antenna on a second one of a plurality of pilot subcarriers during the same set of time slots. The second pilot information is different from the first pilot information. A second stream of input data is similarly transformed to form second OFDM signals transmit via a second antenna over the multiple subcarriers in the same frequency band over the same time period that includes the same set of time slots.Type: GrantFiled: August 9, 2018Date of Patent: April 23, 2019Assignee: Wi-Fi One, LLCInventors: Yutaka Murakami, Kiyotaka Kobayashi, Masayuki Orihashi
-
Patent number: 10243626Abstract: A transmission apparatus includes processing circuitry that generates a first data sequence representing first data or a second data sequence representing second data different from the first data and selects the first data sequence as an output data sequence. A modulation scheme is determined from a plurality of modulation schemes, and the output data sequence is modulated with the determined modulation scheme. Transmission circuitry transmits the modulated output data sequence. A first time interval associated with selecting the first data sequence for the output data sequence is longer than a second time interval associated with determining the determined modulation scheme.Type: GrantFiled: August 9, 2017Date of Patent: March 26, 2019Assignee: Wi-Fi One, LLCInventors: Yutaka Murakami, Kiyotaka Kobayashi, Masayuki Orihashi, Akihiko Matsuoka