Patents by Inventor Hideaki Arao
Hideaki Arao 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: 20240094481Abstract: An optical apparatus includes a light emitting apparatus and a host apparatus. The light emitting apparatus includes a housing extending in a first direction, a light emitting device mounted in the housing, an optical connector including a first optical connection part provided at one end of the housing, and an electrical connector including a first electrical connection part provided at one end of the housing and receiving a voltage to drive the light emitting device. The host apparatus includes a host optical connector including a second optical connection part which faces the first optical connection part and is optically coupled thereto, a host electrical connector including a second electrical connection part facing the first electrical connection part and being electrically connected to the first electrical connection part, and a host board mounting the host optical connector and the host electrical connector thereon.Type: ApplicationFiled: March 5, 2021Publication date: March 21, 2024Applicants: Sumitomo Electric Industries, Ltd., Sumitomo Electric Device Innovations, Inc.Inventors: Kuniyuki ISHII, Hiromi KURASHIMA, Hideaki KAMISUGI, Tomomi SANO, Tetsuya NAKANISHI, Hong NGUYEN, Hajime ARAO, Dai SASAKI, Takuro WATANABE
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Patent number: 8787770Abstract: A transport apparatus includes a plurality of transport processing units. The transport processing unit transports optical signals on an optical network which controls, by transmitting or receiving the optical signals including control information, apparatuses that are managed on the basis of areas. The transport processing unit includes a setting-information storage unit that stores therein setting information indicating a group to which a plurality of apparatuses within the area belongs, a frame generating unit that, upon receiving the optical signal, determines on the basis of the setting information whether the control information is to be terminated or to be passed through itself, sets a destination depending on the result of the determination, and generates a frame including the control information, and a path switching unit that switches a path of the frame on the basis of the destination of the frame.Type: GrantFiled: January 22, 2010Date of Patent: July 22, 2014Assignee: Fujitsu LimitedInventor: Hideaki Arao
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Patent number: 8401034Abstract: A transport apparatus, includes a switching frame generator that generates a GCC-mode-switching special frame for instructing a corresponding apparatus to switch a GCC mode, a GCC overhead insertion unit that inserts the GCC-mode-switching special frame generated by the switching frame generator into a GCC overhead and transmits the GCC overhead to the corresponding apparatus, a transmission-mode controller that performs a control operation to switch the GCC mode of its own apparatus after the transmission of the GCC-mode-switching special frame is completed by the GCC overhead insertion unit, a switching-frame determination unit that determines, upon receiving the GCC overhead from the corresponding apparatus, whether the GCC-mode-switching special frame is inserted into the GCC overhead, and a reception-mode controller that performs a control operation to switch the GCC mode of its own apparatus when the switching-frame determination unit determines that the GCC-mode-switching special frame is inserted intoType: GrantFiled: January 7, 2010Date of Patent: March 19, 2013Assignee: Fujitsu LimitedInventors: Hideaki Tazawa, Hideaki Arao
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Publication number: 20100178060Abstract: A transport apparatus, includes a switching frame generator that generates a GCC-mode-switching special frame for instructing a corresponding apparatus to switch a GCC mode, a GCC overhead insertion unit that inserts the GCC-mode-switching special frame generated by the switching frame generator into a GCC overhead and transmits the GCC overhead to the corresponding apparatus, a transmission-mode controller that performs a control operation to switch the GCC mode of its own apparatus after the transmission of the GCC-mode-switching special frame is completed by the GCC overhead insertion unit, a switching-frame determination unit that determines, upon receiving the GCC overhead from the corresponding apparatus, whether the GCC-mode-switching special frame is inserted into the GCC overhead, and a reception-mode controller that performs a control operation to switch the GCC mode of its own apparatus when the switching-frame determination unit determines that the GCC-mode-switching special frame is inserted intoType: ApplicationFiled: January 7, 2010Publication date: July 15, 2010Applicant: FUJITSU LIMITEDInventors: Hideaki TAZAWA, Hideaki Arao
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Publication number: 20100135658Abstract: A transport apparatus includes a plurality of transport processing units. The transport processing unit transports optical signals on an optical network which controls, by transmitting or receiving the optical signals including control information, apparatuses that are managed on the basis of areas. The transport processing unit includes a setting-information storage unit that stores therein setting information indicating a group to which a plurality of apparatuses within the area belongs, a frame generating unit that, upon receiving the optical signal, determines on the basis of the setting information whether the control information is to be terminated or to be passed through itself, sets a destination depending on the result of the determination, and generates a frame including the control information, and a path switching unit that switches a path of the frame on the basis of the destination of the frame.Type: ApplicationFiled: January 22, 2010Publication date: June 3, 2010Applicant: FUJITSU LIMITEDInventor: Hideaki Arao
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Patent number: 7417878Abstract: A distributed power supply is incorporated in a device including a plurality of PCB. An on-board power supply is provided in the distributed power supply. The on-board power supply individually supplies a secondary power to each PCB using a primary power. Each PCB includes a primary power supply monitoring circuit, a PCB internal power supply monitoring circuit, and a pulse generation circuit. The primary power supply circuit detects an abnormality in the voltage of in the primary power supplied to the on-board power supply. The PCB internal power supply monitoring circuit restarts the PCB when the abnormality is detected. The pulse generation circuit transmits a restart signal to the other PCBs in the device.Type: GrantFiled: August 4, 2006Date of Patent: August 26, 2008Assignee: Fujitsu LimitedInventors: Keiichiro Tsukamoto, Hideaki Arao
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Patent number: 7415091Abstract: A multiple frame rate synchronous detecting apparatus for synchronous-detecting received serial data having one frame rate among a plurality of predetermined frame rates is provided. The apparatus comprises a serial-to-parallel converter for serial-to-parallel converting the received serial data with matching with highest frame rate, a coincidence detector for comparing a portion of the converted parallel data corresponding to a predetermined region defined based on the frame rate, with a pattern for synchronous detection to detect coincidence, and a synchronous determiner for determining to have been synchronized with the frame rate when a periodic cycle of the coincidence detection is the same as a previous one.Type: GrantFiled: April 16, 2002Date of Patent: August 19, 2008Assignee: Fujitsu LimitedInventors: Osamu Takeuchi, Hiroyuki Ohgaki, Hideaki Arao, Masaki Nakada
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Patent number: 7327745Abstract: A packet transmission system is disclosed. The system serves between terminal apparatuses that include a supervisory control circuit configured to transmit a supervisory signal in a direction opposite to the transmission direction of a main signal on each of and both of an upstream circuit and a downstream circuit. The packet transmission system transmits overhead information of a packet frame of the main signal of the upstream circuit and the downstream circuit using the supervisory control circuit of the downstream circuit and the upstream circuit, respectively.Type: GrantFiled: January 18, 2005Date of Patent: February 5, 2008Assignee: Fujitsu LimitedInventors: Osamu Takeuchi, Yuuji Kamura, Hideaki Arao, Hirotaka Morita, Hiroyuki Ohgaki
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Publication number: 20070230225Abstract: A distributed power supply is incorporated in a device including a plurality of PCB. An on-board power supply is provided in the distributed power supply. The on-board power supply individually supplies a secondary power to each PCB using a primary power. Each PCB includes a primary power supply monitoring circuit, a PCB internal power supply monitoring circuit, and a pulse generation circuit. The primary power supply circuit detects an abnormality in the voltage of in the primary power supplied to the on-board power supply. The PCB internal power supply monitoring circuit restarts the PCB when the abnormality is detected. The pulse generation circuit transmits a restart signal to the other PCBs in the device.Type: ApplicationFiled: August 4, 2006Publication date: October 4, 2007Applicant: FUJITSU LIMITEDInventors: Keiichiro Tsukamoto, Hideaki Arao
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Patent number: 7225366Abstract: A transport systems is equipped with a burst error detecting unit that monitors a predetermined byte, which is specified in advance in a frame to be monitored, in a transmission signal having header information and data information multiplexed into the frame in bytes. The burst error detecting unit detects a burst error based on a change in a state of occurrence of a bit error in the predetermined byte in a predetermined time window.Type: GrantFiled: January 30, 2004Date of Patent: May 29, 2007Assignee: Fujitsu LimitedInventors: Hideaki Arao, Masahiro Shioda
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Publication number: 20050152349Abstract: A packet transmission system is disclosed. The system serves between terminal apparatuses that include a supervisory control circuit configured to transmit a supervisory signal in a direction opposite to the transmission direction of a main signal on each of and both of an upstream circuit and a downstream circuit. The packet transmission system transmits overhead information of a packet frame of the main signal of the upstream circuit and the downstream circuit using the supervisory control circuit of the downstream circuit and the upstream circuit, respectively.Type: ApplicationFiled: January 18, 2005Publication date: July 14, 2005Inventors: Osamu Takeuchi, Yuuji Kamura, Hideaki Arao, Hirotaka Morita, Hiroyuki Ohgaki
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Publication number: 20040205444Abstract: A transport systems is equipped with a burst error detecting unit that monitors a predetermined byte, which is specified in advance in a frame to be monitored, in a transmission signal having header information and data information multiplexed into the frame in bytes. The burst error detecting unit detects a burst error based on a change in a state of occurrence of a bit error in the predetermined byte in a predetermined time window.Type: ApplicationFiled: January 30, 2004Publication date: October 14, 2004Inventors: Hideaki Arao, Masahiro Shioda
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Patent number: 6667990Abstract: This invention is a transmission terminal station apparatus. The transmission terminal station apparatus is connected to a low-order group terminal device through a low-speed line and connected to a high-order group terminal station device through a high-speed line. The transmission terminal station apparatus includes a detection unit, a first insertion unit, a multiplexing unit, and a second insertion unit. The detection unit, when a frame is received from the low-order group terminal device, detects, as detection information, information related to operation maintenance information to be transmitted from the overhead of the frame to the high-order group terminal station device. The first insertion unit inserts detection information detected by the detection unit into a space area of the frame. The multiplexing unit generates a multi-frame including the frame.Type: GrantFiled: December 27, 1999Date of Patent: December 23, 2003Assignee: Fujitsu LimitedInventor: Hideaki Arao
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Publication number: 20030081710Abstract: A multiple frame rate synchronous detecting apparatus for synchronous-detecting received serial data having one frame rate among a plurality of predetermined frame rates is provided. The apparatus comprises a serial-to-parallel converter for serial-to-parallel converting the received serial data with matching with highest frame rate, a coincidence detector for comparing a portion of the converted parallel data corresponding to a predetermined region defined based on the frame rate, with a pattern for synchronous detection to detect coincidence, and a synchronous determiner for determining to have been synchronized with the frame rate when a periodic cycle of the coincidence detection is the same as a previous one.Type: ApplicationFiled: April 16, 2002Publication date: May 1, 2003Inventors: Osamu Takeuchi, Hiroyuki Ohgaki, Hideaki Arao, Masaki Nakada
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Patent number: 6356368Abstract: In a control device for processing an optical supervisory transmission signal necessary for network management between transmission devices in a wavelength-multiplexed optical transmission system, there is provided a main signal device that amplifies a main signal light which is wavelength-multiplexed. A supervisory control device processes supervisory control information. A transmission path connects the main signal device and the supervisory control device. The supervisory control information is defined by mapping items of data of the optical supervisory transmission signal into an overhead defined in another optical transmission system. The main signal device converts the optical supervisory transmission signal dropped from the main signal light into the supervisory control information, which is sent to the supervisory control device. The supervisory control device processes the supervisory control information received as the overhead.Type: GrantFiled: February 12, 1999Date of Patent: March 12, 2002Assignee: Fujitsu LimitedInventor: Hideaki Arao
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Patent number: 5831970Abstract: A transmission apparatus comprises a main signal line block for transmitting a main signal and a monitor/control block for monitoring state of the apparatus and lines by collecting line switching information supplied from each unit which constitutes the main signal line block and controlling the switching operation between a working line and a protection line. The main signal line block and the monitor/control block are connected by an ATM link. An ATM routing unit in the main signal line block collects line switching information supplied from each unit and maps the line switching information in data portion of an ATM cell and transmits the ATM cell to the monitor/control block via the ATM link.Type: GrantFiled: May 22, 1997Date of Patent: November 3, 1998Assignee: Fujitsu LimitedInventor: Hideaki Arao