Patents by Inventor Korefumi Tashiro
Korefumi Tashiro 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: 7200470Abstract: A train detection system includes transmitters receivers connected to a track circuit for transmitting and receiving a train detecting signal to and from the track circuit, and a control device on the ground, which transmits the train detecting signal to the transmitter and receives the train detection signal from the receiver. The transmitter adds a first unique code data to the train detecting signal received from the control device and transmits the same to the track circuit, and the receiver adds a second unique code data to the train detecting signal being added of the first unique code data received from the track circuit and transmits the same to the control device. The control device on the ground includes a storage portion and a collating portion which collates whether the first and second unique code data received from the receiver coincide with data stored in advance in the storage portion.Type: GrantFiled: March 9, 2006Date of Patent: April 3, 2007Assignee: Hitachi, Ltd.Inventors: Kenji Oguma, Atsushi Kawabata, Korefumi Tashiro, Michio Fujiwara, Shinya Tanifuji
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Publication number: 20060155433Abstract: A train detection system includes transmitters receivers connected to a track circuit for transmitting and receiving a train detecting signal to and from the track circuit, and a control device on the ground, which transmits the train detecting signal to the transmitter and receives the train detection signal from the receiver. The transmitter adds a first unique code data to the train detecting signal received from the control device and transmits the same to the track circuit, and the receiver adds a second unique code data to the train detecting signal being added of the first unique code data received from the track circuit and transmits the same to the control device. The control device on the ground includes a storage portion and a collating portion which collates whether the first and second unique code data received from the receiver coincide with data stored in advance in the storage portion.Type: ApplicationFiled: March 9, 2006Publication date: July 13, 2006Inventors: Kenji Oguma, Atsushi Kawabata, Korefumi Tashiro, Michio Fujiwara, Shinya Tanifuji
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Patent number: 7027901Abstract: A transmitter and receiver device used together with a control device provided on ground, which performs detection of a train, performs transmission and reception of a train detecting signal, and collates data added to a received train detection signal with predetermined data. A transmitter, to be connected to a track circuit, transmits a train detecting signal, to the track circuit, and a receiver, to be connected to the track circuit, receives the train detecting signal from the track circuit. The transmitter adds a first unique code to the train detecting signal transmitted from the control device provided on the ground and transmits the same to the track circuit. The receiver adds a second unique code to the train detecting signal which was the first unique code added thereto and received from the track circuit and transmits the same to the control device provided on the ground.Type: GrantFiled: November 30, 2004Date of Patent: April 11, 2006Assignee: Hitachi, Ltd.Inventors: Kenji Oguma, Atsushi Kawabata, Korefumi Tashiro, Michio Fujiwara, Shinya Tanifuji
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Publication number: 20050075765Abstract: A transmitter and receiver device used together with a control device provided on ground, which performs detection of a train, performs transmission and reception of a train detecting signal, and collates data added to a received train detection signal with predetermined data. A transmitter, to be connected to a track circuit, transmits a train detecting signal, to the track circuit, and a receiver, to be connected to the track circuit, receives the train detecting signal from the track circuit. The transmitter adds a first unique code to the train detecting signal transmitted from the control device provided on the ground and transmits the same to the track circuit. The receiver adds a second unique code to the train detecting signal which was the first unique code added thereto and received from the track circuit and transmits the same to the control device provided on the ground.Type: ApplicationFiled: November 30, 2004Publication date: April 7, 2005Inventors: Kenji Oguma, Atsushi Kawabata, Korefumi Tashiro, Michio Fujiwara, Shinya Tanifuji
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Patent number: 6829526Abstract: A train detection system and method in which a transmitter transmits a train detecting signal, a receiver receives the train detecting signal, and a control device on the ground which is connectable to the transmitter and transmits the train detecting signal to the transmitter and receives the train detecting signal from the receiver. The transmitter adds first unique code data to the train detecting signal transmitted from control device on the ground and the receiver adds second unique code data to the train detecting signal. The control device on the ground collates whether the first unique code data and the second unique code data received from said receiver coincide with predetermined data contents.Type: GrantFiled: July 10, 2003Date of Patent: December 7, 2004Assignee: Hitachi, Ltd.Inventors: Kenji Oguma, Atsushi Kawabata, Korefumi Tashiro, Michio Fujiwara, Shinya Tanifuji
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Publication number: 20040030467Abstract: A train detection system includes a transmitter which transmits a train detecting signal, a receiver, and a wayside controller connectable to the transmitter and the receiver. The transmitter adds a first unique code assigned to the transmitter to the train detecting signal received from the wayside controller and transmits the thus processed train detecting signal, and the receiver adds data of a second unique code to the train detecting signal and transmits the thus processed train detecting signal. The wayside controller includes a unique code checker for checking whether or not the first unique code and the second unique code agree with the contents of a predetermined code.Type: ApplicationFiled: July 10, 2003Publication date: February 12, 2004Inventors: Kenji Oguma, Atsushi Kawabata, Korefumi Tashiro, Michio Fujiwara, Shinya Tanifuji
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Patent number: 6604031Abstract: A train detection system, having a transmitter which transmits a train detecting signal, a receiver, and a wayside controller connected to the transmitter and the receiver. The transmitter adds a first unique code assigned to the transmitter to the train detecting signal received from the wayside controller and transmits the thus processed train detecting signal and the receiver adds data of a second unique code to the train detecting signal and transmits the thus processed train detecting signal. The wayside controller includes a unique code checker for checking whether or not the first unique code and the second unique code agree with the contents of a predetermined code.Type: GrantFiled: August 16, 2002Date of Patent: August 5, 2003Assignee: Hitachi, Ltd.Inventors: Kenji Oguma, Atsushi Kawabata, Korefumi Tashiro, Michio Fujiwara, Shinya Tanifuji
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Patent number: 6513131Abstract: A self-checking circuit, which is useful for a highly reliable system configuration, includes a logic circuit having an error detection function. For function blocks for feeding out a plurality of signals that are at least duplexed, the logic circuit compares the output signals of the function blocks, and detects an error on the basis of results of the comparison. The logic circuit comprises synthesizing means provided to superimpose inherent waveforms assigned in advance to the respective output signals of the function blocks onto the output signals of one of the function blocks. The inherent waveforms are orthogonal waveforms generated by an orthogonal waveform generator circuit. The logic circuit also comprises comparison means for comparing a signal output of the synthesizing means with the signal output of the other function block to detect an error. The whole circuit including the function blocks are judged normal only if the waveforms inherent to both output signals exist.Type: GrantFiled: August 19, 1999Date of Patent: January 28, 2003Assignee: Hitachi, Ltd.Inventors: Nobuyasu Kanekawa, Shoji Suzuki, Yoshimichi Sato, Korefumi Tashiro, Keisuke Bekki, Hiroshi Sato, Makoto Nohmi, Shinya Ohtsuji
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Publication number: 20020193917Abstract: A train detection system, having a transmitter which transmits a train detecting signal, a receiver, and a wayside controller connected to the transmitter and the receiver. The transmitter adds a first unique code assigned to the transmitter to the train detecting signal received from the wayside controller and transmits the thus processed train detecting signal and the receiver adds data of a second unique code to the train detecting signal and transmits the thus processed train detecting signal. The wayside controller includes a unique code checker for checking whether or not the first unique code and the second unique code agree with the contents of a predetermined code.Type: ApplicationFiled: August 16, 2002Publication date: December 19, 2002Inventors: Kenji Oguma, Atsushi Kawabata, Korefumi Tashiro, Michio Fujiwara, Shinya Tanifuji
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Patent number: 6470244Abstract: A train detection system, having a transmitter which transmits a train detecting signal, a receiver and a wayside controller connected to the transmitter and the receiver through a data transmission path. The transmitter adds a first unique code assigned to the transmitter to the train detecting signal received from the wayside controller and transmits the thus processed train detecting signal and the receiver adds data of a second unique code to the train detecting signal and transmits the thus processed train detecting signal. The wayside controller includes a unique code checker for checking whether or not the first unique code data and the second unique code data agree with the contents of predetermined data.Type: GrantFiled: November 7, 2001Date of Patent: October 22, 2002Assignee: Hitachi, Ltd.Inventors: Kenji Oguma, Atsushi Kawabata, Korefumi Tashiro, Michio Fujiwara, Shinya Tanifuji
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Patent number: 6374165Abstract: In a railway information transmission method and system wherein information is transmitted by a consecutive transmission mode between on-vehicle control equipment and ground control equipment, a redundant code which is updated in accordance with a predetermined procedure every transmission processing is affixed to information to-be-communicated, the information being then transmitted, and on a reception side, a logical operation is performed on the redundant code which is contained in the received information and a redundant code which is created on this side and which is updated in a predetermined procedure. Thus, the trouble of a transmission path can be simply found, and further, the safety. of train service based on an automatic train control or the like can be enhanced.Type: GrantFiled: March 29, 2001Date of Patent: April 16, 2002Assignee: Hitachi, Ltd.Inventors: Kenji Oguma, Atsushi Kawabata, Korefumi Tashiro, Michio Fujiwara, Shinya Tanifuji
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Publication number: 20020029100Abstract: A train detection system, having a transmitter which transmits a train detecting signal, a receiver and a wayside controller connected to the transmitter and the receiver through a data transmission path. The transmitter adds a first unique code assigned to the transmitter to the train detecting signal received from the wayside controller and transmits the thus processed train detecting signal and the receiver adds data of a second unique code to the train detecting signal and transmits the thus processed train detecting signal. The wayside controller includes a unique code checker for checking whether or not the first unique code data and the second unique code data agree with the contents of predetermined data.Type: ApplicationFiled: November 7, 2001Publication date: March 7, 2002Inventors: Kenji Oguma, Atsushi Kawabata, Korefumi Tashiro, Michio Fujiwara, Shinya Tanifuji
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Patent number: 6317664Abstract: A train detection system, including a transmitter, to be connected to a track circuit, which transmits to the track circuit a train detecting signal for confirming the existence of a train in the track circuit, a receiver, to be connected to the track circuit, which receives the train detecting signal from the transmitter through the track circuit, and a wayside controller. The wayside controller is connected to the transmitter and the receiver through a data transmission path, which transmits the train detecting signal to the transmitter and receives the train detecting signal from the receiver. The wayside controller includes a checker for checking whether or not the train detecting signal, which is received from the receiver, agrees with the contents of predetermined data.Type: GrantFiled: April 11, 2001Date of Patent: November 13, 2001Assignee: Hitachi, Ltd.Inventors: Kenji Oguma, Atsushi Kawabata, Korefumi Tashiro, Michio Fujiwara, Shinya Tanifuji
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Publication number: 20010029412Abstract: A train detection system, including a transmitter, to be connected to a track circuit, which transmits to the track circuit a train detecting signal for confirming the existence of a train in the track circuit, a receiver, to be connected to the track circuit, which receives the train detecting signal from the transmitter through the track circuit, and a wayside controller. The wayside controller is connected to the transmitter and the receiver through a data transmission path, which transmits the train detecting signal to the transmitter and receives the train detecting signal from the receiver. The wayside controller includes a checker for checking whether or not the train detecting signal, which is received from the receiver, agrees with the contents of predetermined data.Type: ApplicationFiled: April 11, 2001Publication date: October 11, 2001Inventors: Kenji Oguma, Atsushi Kawabata, Korefumi Tashiro, Michio Fujiwara, Shinya Tanifuji
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Publication number: 20010012977Abstract: In a railway information transmission method and system wherein information is transmitted by a consecutive transmission mode between an on-vehicle control equipment and a ground control equipment; a redundant code which is updated in a predetermined procedure every transmission processing is affixed to information to-be-communicated, the information being then transmitted, and on a reception side, the redundant code which is contained in the received information is collated with a redundant code which is created on this side and which is updated in a predetermined procedure.Type: ApplicationFiled: March 29, 2001Publication date: August 9, 2001Inventors: Kenji Oguma, Atsushi Kawabata, Korefumi Tashiro, Michio Fujiwara, Shinya Tanifuji
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Patent number: 6230086Abstract: In a railway information transmission method and system wherein information is transmitted by a consecutive transmission mode between on-vehicle control equipment and ground control equipment, a redundant code which is updated in accordance with a predetermined procedure every transmission processing is affixed to information to-be-communicated, the information being then transmitted, and on a reception side, the redundant code which is contained in the received information is correlated with a redundant code which is created on this side and which is updated in a predetermined procedure. Thus, the trouble of a transmission path can be simply found, and further, the safety of train service based on an automatic train control or the like can be enhanced.Type: GrantFiled: March 2, 1999Date of Patent: May 8, 2001Assignee: Hitachi, Ltd.Inventors: Kenji Oguma, Atsushi Kawabata, Korefumi Tashiro, Michio Fujiwara, Shinya Tanifuji
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Patent number: 6230085Abstract: A train detection system is capable of realizing reliable train detection with a train detection apparatus of simple construction using a track circuit. This is attained by a transmitter 11a adding data of a first unique code to a train detecting signal received from wayside controller 100 and transmitting it to a track circuit; a receiver 11b adding data of a second unique code to the train detecting signal added with the first unique code data received from the track circuit and transmitting it to the wayside controller 100; and the wayside controller 100 checking whether or not the data received from the receiver 11b agrees with predetermined data.Type: GrantFiled: May 7, 1998Date of Patent: May 8, 2001Assignee: Hitachi, Ltd.Inventors: Kenji Oguma, Atsushi Kawabata, Korefumi Tashiro, Michio Fujiwara, Shinya Tanifuji
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Patent number: 6092217Abstract: A self-checking circuit, which is useful for a highly reliable system configuration, includes a logic circuit having an error detection function. For function blocks for feeding out a plurality of signals that are at least duplexed, the logic circuit compares the output signals of the function blocks, and detects an error on the basis of results of the comparison. The logic circuit comprises synthesizing means provided to superimpose inherent waveforms assigned in advance to the respective output signals of the function blocks onto the output signals of one of the function blocks. The inherent waveforms are orthogonal waveforms generated by an orthogonal waveform generator circuit. The logic circuit also comprises comparison means for comparing a signal output of the synthesizing means with the signal output of the other function block to detect an error. The whole circuit including the function blocks are judged normal only if the waveforms inherent to both output signals exist.Type: GrantFiled: November 3, 1997Date of Patent: July 18, 2000Assignee: Hitachi, Ltd.Inventors: Nobuyasu Kanekawa, Shoji Suzuki, Yoshimichi Sato, Korefumi Tashiro, Keisuke Bekki, Hiroshi Sato, Makoto Nohmi, Shinya Ohtsuji
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Patent number: 5805797Abstract: An ATP device generates control data for two systems from an ATP command speed signal, provides duplicate logic units in the ATP device so as to process the respective control data, provides at least two CRC data for checking the control data for each system, and changes the CRC data of the opposite logic unit or selects one of the two according to the content of a failure detection signal from each of the duplicated logic units. It is possible to check the control data and the operation of each logic circuit in such a way that only when all the data, circuits, and elements operate normally will an output signal for controlling the object to be controlled be outputted, and when a failure is detected in a part, an output signal to that effect is outputted. Therefore, when a failure occurs, a fail safe function for performing control on the safe side is made possible.Type: GrantFiled: December 28, 1995Date of Patent: September 8, 1998Assignee: Hitachi, Ltd.Inventors: Hiroshi Sato, Nobuyasu Kanekawa, Makoto Nohmi, Korefumi Tashiro
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Patent number: 5802266Abstract: A self-checking circuit, which is useful for a highly reliable system configuration, includes a logic circuit having an error detection function. For function blocks for feeding out a plurality of signals that are at least duplexed, the logic circuit compares the output signals of the function blocks, and detects an error on the basis of results of the comparison. The logic circuit comprises synthesizing circuitry provided to superimpose inherent waveforms assigned in advance to the respective output signals of the function blocks onto the output signals of one of the function blocks. The inherent waveforms are orthogonal waveforms generated by an orthogonal waveform generator circuit. The logic circuit also compares the output signals having the superimposed inherent waveforms with the signal output of the other function block to detect an error. The whole circuit including the function blocks are judged normal only if the waveforms inherent to both output signals exist.Type: GrantFiled: October 14, 1994Date of Patent: September 1, 1998Assignee: Hitachi, Ltd.Inventors: Nobuyasu Kanekawa, Shoji Suzuki, Yoshimichi Sato, Korefumi Tashiro, Keisuke Bekki, Hiroshi Sato, Makoto Nohmi, Shinya Ohtsuji