Patents by Inventor Mitsuya Kawashita
Mitsuya Kawashita 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: 9703315Abstract: A transmission device includes a control card and a plurality of IF cards. The control card receives first set time from a host PC and calculates second set time by adding add time corresponding to one cycle of a clock signal that is commonly used by the control card and the IF cards to the first set time. The control card distributes the second set time to each of the IF cards. After each of the IF cards receives the second set time and sets the second set time in an internal timer, when a clock signal is detected, each of the IF cards starts a time measuring operation of the internal timer from the second set time.Type: GrantFiled: September 9, 2015Date of Patent: July 11, 2017Assignee: FUJITSU LIMITEDInventors: Mitsuya Kawashita, Shota Mori, Kazuhiro Kunimatsu
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Publication number: 20160109900Abstract: A transmission device includes a control card and a plurality of IF cards. The control card receives first set time from a host PC and calculates second set time by adding add time corresponding to one cycle of a clock signal that is commonly used by the control card and the IF cards to the first set time. The control card distributes the second set time to each of the IF cards. After each of the IF cards receives the second set time and sets the second set time in an internal timer, when a clock signal is detected, each of the IF cards starts a time measuring operation of the internal timer from the second set time.Type: ApplicationFiled: September 9, 2015Publication date: April 21, 2016Applicants: FUJITSU LIMITED, FUJITSU TELECOM NETWORKS LIMITEDInventors: MITSUYA KAWASHITA, SHOTA MORI, KAZUHIRO KUNIMATSU
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Patent number: 9240666Abstract: An optical amplification device includes: an optical module that outputs an amplified light; and a controller that makes the optical module emit a light when an emission command is input into the controller, wherein the controller cancels an inputting of the emission command until a predetermined time passes, when a protection for forbidding a light emission of the optical module is canceled.Type: GrantFiled: April 21, 2014Date of Patent: January 19, 2016Assignee: FUJITSU LIMITEDInventors: Mitsuya Kawashita, Jinlin Zhang, Eiji Maeda, Shota Mori
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Patent number: 9237061Abstract: A transmission apparatus includes a digital circuit that has an input circuit into which packets are input at indefinite intervals; a measuring circuit that measures an interval during which no packet is input into the input circuit; a determiner circuit that determines, based on the interval measured by the measuring circuit, whether to insert a given frame between packets input into the input circuit; and a transmitter that inserts, based on a result of determination by the determiner circuit, the given frame between the packets input into the input circuit and sequentially transmits the packets with the given frame therebetween.Type: GrantFiled: July 27, 2012Date of Patent: January 12, 2016Assignee: FUJITSU LIMITEDInventors: Mitsuya Kawashita, Dai Suzuki
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Publication number: 20140340739Abstract: An optical amplification device includes: an optical module that outputs an amplified light; and a controller that makes the optical module emit a light when an emission command is input into the controller, wherein the controller cancels an inputting of the emission command until a predetermined time passes, when a protection for forbidding a light emission of the optical module is canceled.Type: ApplicationFiled: April 21, 2014Publication date: November 20, 2014Applicants: FUJITSU LIMITED, FUJITSU TELECOM NETWORKS LIMITEDInventors: Mitsuya Kawashita, Jinlin Zhang, Eiji Maeda, Shota Mori
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Patent number: 8423880Abstract: An estimating unit includes: an error detecting unit which detects an error among a plurality of frames received from an interface unit of a transmission device; a request sending unit which produces a first frame including a data collection request for requesting data collection upon the error detecting unit detecting the error, and which sends the first frame to the interface unit; an extracting unit which extracts, from the plurality of frames received from the interface unit, a second frame including the error detected by the error detecting unit and a third frame including a reply of the interface unit to the data collection request; and a saving unit in which the second frame extracted by the extracting unit is saved.Type: GrantFiled: March 18, 2010Date of Patent: April 16, 2013Assignee: Fujitsu LimitedInventor: Mitsuya Kawashita
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Publication number: 20130064113Abstract: A transmission apparatus includes a digital circuit that has an input circuit into which packets are input at indefinite intervals; a measuring circuit that measures an interval during which no packet is input into the input circuit; a determiner circuit that determines, based on the interval measured by the measuring circuit, whether to insert a given frame between packets input into the input circuit; and a transmitter that inserts, based on a result of determination by the determiner circuit, the given frame between the packets input into the input circuit and sequentially transmits the packets with the given frame therebetween.Type: ApplicationFiled: July 27, 2012Publication date: March 14, 2013Applicants: Fujitsu Telecom Networks Limited, Fujitsu LimitedInventors: Mitsuya KAWASHITA, Dai Suzuki
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Patent number: 7882362Abstract: In a data management apparatus (1) including a recording device (12) for recording contents data and a data processing section for processing the contents data, first management data for managing the contents data according to a first reference is recorded in the recording device (12), and the data processing section reproduces the contents data based on the first management data, and transfers the contents data to an external device (2) based on second management data which is used for management of the contents data by the external device according to a second reference different from the first reference. As a result, the protection of the contents data can be made while complying with related laws, and the contents data with optional functions added thereto can be backed up.Type: GrantFiled: October 19, 2006Date of Patent: February 1, 2011Assignee: Fujitsu Ten LimitedInventors: Yuu Nomura, Taku Yokawa, Yoshikazu Ueta, Mitsuhiro Maruo, Mitsuya Kawashita, Osamu Okada, Takeshi Ohhara
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Publication number: 20100241937Abstract: An estimating unit includes: an error detecting unit which detects an error among a plurality of frames received from an interface unit of a transmission device; a request sending unit which produces a first frame including a data collection request for requesting data collection upon the error detecting unit detecting the error, and which sends the first frame to the interface unit; an extracting unit which extracts, from the plurality of frames received from the interface unit, a second frame including the error detected by the error detecting unit and a third frame including a reply of the interface unit to the data collection request; and a saving unit in which the second frame extracted by the extracting unit is saved.Type: ApplicationFiled: March 18, 2010Publication date: September 23, 2010Applicant: FUJITSU LIMITEDInventor: Mitsuya KAWASHITA
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Patent number: 7751690Abstract: A recording and reproducing apparatus for reproducing information recorded on a recording medium concurrently while recording the information, includes a compression section, a temporary storage section, a reproducing process section, and a storage section. The compression section reads the information recorded on the recording medium and compresses read information. The temporary storage section stores compressed information provided by the compression process. The reproducing process section decompresses the compressed information output thereto from the temporary storage section and reproduces decompressed information. The storage section stores the compressed information output thereto from the temporary storage section.Type: GrantFiled: April 27, 2005Date of Patent: July 6, 2010Assignees: Fujitsu Ten Limited, Fujitsu LimitedInventors: Mitsuya Kawashita, Osamu Okada, Nobuyuki Batou, Taku Yokawa, Yoshikazu Ueta, Hidenori Mitsunaga, Takashi Kouno
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Patent number: 7525885Abstract: An information reproduction and recording apparatus able to prevent invalid data not required for recording from being recorded on a recording medium when transferring reproduced information by a small number of signal lines such as a three-line serial peripheral interface, wherein a music data reproducing unit outputs a data signal DATA and clock signals LRCK and BCK to a valid recording period control unit and outputs a SPACE signal to the valid recording period control unit while outputting music data containing track interval data, the signals are transferred to a high speed encoder and the data signal DATA is encoded and recorded on a hard disk by an HDD based on the clock signals LRCK and BCK while the SPACE signal is being output, and the valid recording period control unit suspends transfer of the clock signal LRCK and prevents recording of invalid data on the hard disk while the SPACE signal is not being output.Type: GrantFiled: May 23, 2005Date of Patent: April 28, 2009Assignees: Fujitsu Ten Limited, Fujitsu LimitedInventors: Hidenori Mitsunaga, Takashi Kouno, Osamu Okada, Mitsuya Kawashita
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Publication number: 20070106856Abstract: In a data management apparatus (1) including a recording device (12) for recording contents data and a data processing section for processing the contents data, first management data for managing the contents data according to a first reference is recorded in the recording device (12), and the data processing section reproduces the contents data based on the first management data, and transfers the contents data to an external device (2) based on second management data which is used for management of the contents data by the external device according to a second reference different from the first reference. As a result, the protection of the contents data can be made while complying with related laws, and the contents data with optional functions added thereto can be backed up.Type: ApplicationFiled: October 19, 2006Publication date: May 10, 2007Applicant: FUJITSU TEN LIMITEDInventors: Yuu Nomura, Taku Yokawa, Yoshikazu Ueta, Mitsuhiro Maruo, Mitsuya Kawashita, Osamu Okada, Takeshi Ohhara
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Publication number: 20050259972Abstract: A recording and reproducing apparatus for reproducing information recorded on a recording medium concurrently while recording the information, includes a compression section, a temporary storage section, a reproducing process section, and a storage section. The compression section reads the information recorded on the recording medium and compresses read information. The temporary storage section stores compressed information provided by the compression process. The reproducing process section decompresses the compressed information output thereto from the temporary storage section and reproduces decompressed information. The storage section stores the compressed information output thereto from the temporary storage section.Type: ApplicationFiled: April 27, 2005Publication date: November 24, 2005Applicants: FUJITSU TEN LIMITED, FUJITSU LIMITEDInventors: Mitsuya Kawashita, Osamu Okada, Nobuyuki Batou, Taku Yokawa, Yoshikazu Ueta, Hidenori Mitsunaga, Takashi Kouno
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Publication number: 20050259535Abstract: An information reproduction and recording apparatus able to prevent invalid data not required for recording from being recorded on a recording medium when transferring reproduced information by a small number of signal lines such as a three-line serial peripheral interface, wherein a music data reproducing unit outputs a data signal DATA and clock signals LRCK and BCK to a valid recording period control unit and outputs a SPACE signal to the valid recording period control unit while outputting music data containing track interval data, the signals are transferred to a high speed encoder and the data signal DATA is encoded and recorded on a hard disk by an HDD based on the clock signals LRCK and BCK while the SPACE signal is being output, and the valid recording period control unit suspends transfer of the clock signal LRCK and prevents recording of invalid data on the hard disk while the SPACE signal is not being output.Type: ApplicationFiled: May 23, 2005Publication date: November 24, 2005Inventors: Hidenori Mitsunaga, Takashi Kouno, Osamu Okada, Mitsuya Kawashita