Patents by Inventor Masahiro Takatori
Masahiro Takatori 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: 7292785Abstract: An optical transmission system accomplishes optical transmission over a long distance by combining a multiplexing line terminal with optical amplifiers, linear repeaters, and regenerators with optical amplifiers combined together. The system also accomplishes the optical transmission over a short distance by directly connecting the linear terminals therebetween, with an electric-to-optic converter replaced by an electric-to-optic converter having a semiconductor amplifier, with an optic-toelectric converter by an optic-to-electric converter having an avalanche photodiode as light receiver, and with no use of any optical booster amplifier and optical preamplifier in multiplexing line terminal. With these, the optical transmission system can be easily constructed depending on the transmission distance required.Type: GrantFiled: November 7, 2006Date of Patent: November 6, 2007Assignee: Hitachi, Ltd.Inventors: Keiji Tomooka, Naohiro Sakakida, Shin Nishimura, Yoshihiro Ashi, Hironari Matsuda, Satoshi Aoki, Yukio Nakano, Masahiro Takatori, Toru Kazawa, Shinya Sasaki, Ryoji Takeyari, Hiroyuki Nakano
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Patent number: 7272314Abstract: An optical crossconnect apparatus which includes one terminal connected to a transmission path from one optical transmission terminal station and another terminal connected to a transmission path from another optical transmission terminal station, a first optical signal switch having “M1” ports and “N1” ports, through which the optical signal can pass, a second optical signal switch having “M2” ports and “N2” ports, through which the optical signal can pass, and “L” optical signal repeaters, one end connected to the “N1” ports of the first optical signal switch, and the other end connected to the “N2” ports of the second optical switch. The “N1” and the “N2” ports are equal to “L” optical signal repeaters. The “M1” ports of the first optical signal switch connected to the one terminal, and the “M2” ports of the second optical signal switch connected to the other terminal are larger than, or equal to 2.Type: GrantFiled: August 25, 2004Date of Patent: September 18, 2007Assignee: Hitachi, Ltd.Inventors: Yasuyuki Fukashiro, Yukio Hayashi, Shigeki Kitajima, Tatsuo Kanetake, Masahiro Takatori, Shoichi Hanatani, Hirohisa Sano
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Publication number: 20070186237Abstract: Broadcast points in a broadcaster's sole region are turned into package information by processing the contents transmitted from a broadcaster, and the package information is stored in the receiver common information region of a television broadcast receiver, and thereby, it becomes possible even for a communication browser that is an application of the television broadcast receiver to refer to and use the information of broadcast points. It is possible by using a communication browser to receive a service provided in a home page of a company other than the broadcasting company.Type: ApplicationFiled: January 26, 2005Publication date: August 9, 2007Inventor: Masahiro Takatori
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Publication number: 20070065093Abstract: In a program data communication system, in response to a notification request command signal from a program data receiver apparatus for requesting a notification as to whether or not at least one designated program data among a plurality of pieces of program data can be descrambled, a program data transmitter apparatus transmits a notification command signal including information as to whether or not the designated program data can be descrambled by a descrambling section to the program data receiver apparatus. Next, the program data transmitter apparatus descrambles the designated program data in response to a transmission request command signal from the program data receiver apparatus for requesting that the designated program data be transmitted, and then transmits descrambled program data to the program data receiver apparatus.Type: ApplicationFiled: February 18, 2004Publication date: March 22, 2007Inventors: Masahiro Takatori, Mitsuteru Kataoka
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Patent number: 7193999Abstract: A reception system has a receiving section which receives a transport stream transmitted from a transmission system that produces and transmits the transport stream, the transport stream being produced by multiplexing compression coded contents of a program, and electronic program guide information including program specific information having at least an NIT, a PAT, and a PMT, and service information having at least an SDT and an EIT; a PID designating section which can designate a PID of a packet other than an NIT packet in the electronic program guide information, as a PID of a replace packet (hereinafter, referred to as replace PID); a replace PID storing device which stores the replace PID; an SIT producing section which produces an SIT packet from the service information in the received transport stream; and a packet extracting and replacing section which can replace a replace packet indicated by said replace PID storing device, and the NIT packet with the SIT packet.Type: GrantFiled: September 13, 2000Date of Patent: March 20, 2007Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Masahiro Takatori, Hidekazu Suzuki
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Publication number: 20070053687Abstract: An optical transmission system accomplishes optical transmission over a long distance by combining a multiplexing line terminal with optical amplifiers, linear repeaters, and regenerators with optical amplifiers combined together. The system also accomplishes the optical transmission over a short distance by directly connecting the linear terminals therebetween, with an electric-to-optic converter replaced by an electric-to-optic converter having a semiconductor amplifier, with an optic-toelectric converter by an optic-to-electric converter having an avalanche photodiode as light receiver, and with no use of any optical booster amplifier and optical preamplifier in multiplexing line terminal. With these, the optical transmission system can be easily constructed depending on the transmission distance required.Type: ApplicationFiled: November 7, 2006Publication date: March 8, 2007Inventors: Keiji Tomooka, Naohiro Sakakida, Shin Nishimura, Yoshihiro Ashi, Hironari Matsuda, Satoshi Aoki, Yukio Nakano, Masahiro Takatori, Toru Kazawa, Shinya Sasaki, Ryoji Takeyari, Hiroyuki Nakano
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Publication number: 20070056017Abstract: A DTV module includes a CPU, a decoder, and a CA interface circuit. The decoder executes a decoding processing on a digital television signal inputted from a demodulator provided on a motherboard, so as to decode the digital television signal into a video signal and an audio signal, and outputs the video signal and audio signal. The CA interface circuit is connected to a CA module via a PC card socket, and executes input and output processings on signals communicated among the demodulator, CA module, decoder, and CPU. The CPU controls the CA interface circuit by switching types of the signals, so that a selected type of signal conforms to a type of the CA module, in response to a broadcasting system of a digital television signal or the type of the connected CA module.Type: ApplicationFiled: September 21, 2004Publication date: March 8, 2007Inventor: Masahiro Takatori
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Patent number: 7167652Abstract: An optical transmission system accomplishes optical transmission over a long distance by combining a multiplexing line terminal with optical amplifiers, linear repeaters, and regenerators with optical amplifiers combined together. The system also accomplishes the optical transmission over a short distance by directly connecting the linear terminals therebetween, with an electric-to-optic converter replaced by an electric-to-optic converter having a semiconductor amplifier, with an optic-toelectric converter by an optic-to-electric converter having an avalanche photodiode as light receiver, and with no use of any optical booster amplifier and optical preamplifier in multiplexing line terminal. With these, the optical transmission system can be easily constructed depending on the transmission distance required.Type: GrantFiled: February 13, 2004Date of Patent: January 23, 2007Assignee: Hitachi, LtdInventors: Keiji Tomooka, Naohiro Sakakida, Shin Nishimura, Yoshihiro Ashi, Hironari Matsuda, Satoshi Aoki, Yukio Nakano, Masahiro Takatori, Toru Kazawa, Shinya Sasaki, Ryoji Takeyari, Hiroyuki Nakano
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Patent number: 7139479Abstract: An optical transmission network allows transmission monitoring zones to be set up or changed in a flexible manner, and allows simultaneous monitoring of communication quality for each of these monitoring zones. Also, provided is an optical transmission zone service provider that varies user fees according to communication quality in the used zones.Type: GrantFiled: October 23, 2001Date of Patent: November 21, 2006Assignee: Hitachi, Ltd.Inventors: Masaki Ohira, Masahiro Takatori, Yuichi Yamaguchi, Toshiyuki Atsumi, Tomohiro Mori, Ryuji Ishii, Kentarou Watanabe, Toru Okamoto
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Publication number: 20060212780Abstract: A client signal having a constant bit rate is segmented every a bytes to create code information blocks. The bit rate of the client signal is increased such that the client signal has the code information block and an empty area comprised of b bytes, and the ratio c/a is equal to or higher than 110% to create a code block 3 comprised of c bytes. The code information block in the code block is encoded such that an error correcting code is included therein to have an encoding gain of 6 dB or higher for a bit error ratio of 10?12. Associated check bits are placed in the empty area to eventually generate a super FEC signal.Type: ApplicationFiled: January 30, 2006Publication date: September 21, 2006Inventors: Masaki Ohira, Masahiro Takatori, Takashi Mori
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Publication number: 20060126632Abstract: A reception system has a receiving section which receives a transport stream transmitted from a transmission system that produces and transmits the transport stream, the transport stream being produced by multiplexing compression coded contents of a program, and electronic program guide information including program specific information having at least an NIT, a PAT, and a PMT, and service information having at least an SDT and an EIT; a PID designating section which can designate a PID of a packet other than an NIT packet in the electronic program guide information, as a PID of a replace packet (hereinafter, referred to as replace PID); a replace PID storing device which stores the replace PID; an SIT producing section which produces an SIT packet from the service information in the received transport stream; and a packet extracting and replacing section which can replace a replace packet indicated by said replace PID storing device, and the NIT packet with the SIT packet.Type: ApplicationFiled: February 8, 2006Publication date: June 15, 2006Inventors: Masahiro Takatori, Hidekazu Suzuki
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Patent number: 7024616Abstract: A client signal having a constant bit rate is segmented every a bytes to create code information blocks. The bit rate of the client signal is increased such that the client signal has the code information block and an empty area comprised of b bytes, and the ratio c/a is equal to or higher than 110% to create a code block 3 comprised of c bytes. The code information block in the code block is encoded such that an error correcting code is included therein to have an encoding gain of 6 dB or higher for a bit error ratio of 10?12. Associated check bits are placed in the empty area to eventually generate a super FEC signal.Type: GrantFiled: January 29, 2001Date of Patent: April 4, 2006Assignee: Hitachi, Ltd.Inventors: Masaki Ohira, Masahiro Takatori, Takashi Mori
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Publication number: 20060059231Abstract: An information acquiring device and an information providing device used for a pull-type data distribution service is connected to an e-mail server and an information server on a network to receive an e-mail from the e-mail server through the network to acquire data, analyzes the data of the acquired received mail, acquires a definition file and contents in the information server to causes the contents to be displayed in a format defined by the definition file and, when it is recognized that the location information is present in the data of the received mail acquired through analysis, stores the recognized location information on the network for use in acquiring the definition file and the contents.Type: ApplicationFiled: September 18, 2003Publication date: March 16, 2006Inventors: Masahiro Takatori, Mitsuteru Kataoka
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Patent number: 6980553Abstract: A router apparatus 5 is provided with an ATM switch, an IP controller for performing routing control as a controller for layer 3, plural kinds of interfaces which are individually provided to plural transmission paths in which various communications are performed, and a cell multiplexing/demultiplexing unit, and manages the cell communications between respective parts on the basis of identification information. The input packet is subjected to IP processing in an interface to be converted to a cell in a common format, and the cell is serially multiplexed with a cell from another interface on a cell basis, and transmitted to the ATM switch at the cell multiplexing/demultiplexing unit. Each interface and each cell multiplexing/demultiplexing unit sets and switches the identification information for the header portion of the packet and the cell to be communicated by using a table in which the corresponding relationship of the identification information is registered.Type: GrantFiled: May 23, 2002Date of Patent: December 27, 2005Assignee: Hitachi, Ltd.Inventors: Kazuho Miki, Masahiro Takatori, Akihiko Takase, Masaru Murakami, Koji Wakayama, Tetsuro Yoshimoto, Masao Kunimoto
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Patent number: 6975811Abstract: An optical one-to-one protection switching apparatus exchanges signals between a transmit node and a receive node. If a fault is detected in the first transmission line (down-stream), a controller in the node controls a drive circuit so as to shut off a gate. Then, the controller in the transmit node upon receiving a switching request from the receive node, controls the drive circuit so as to shut off the gate. Thereby, the optical switch is switched. The transmitter of the client terminal is thus connected to the second transmission line (down-stream). Upon receiving the switching request from the transmit node, the optical switch in the receive node is switched. Thereby the receiver in the client terminal is connected to the second transmission line (down-stream).Type: GrantFiled: August 29, 2000Date of Patent: December 13, 2005Assignee: Hitachi, Ltd.Inventors: Sunao Kakizaki, Hideaki Tsushima, Takashi Mori, Masahiro Takatori, Yukio Hayashi, Shinichi Kuwano
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Publication number: 20050238056Abstract: A reception system has a receiving section which receives a transport stream transmitted from a transmission system that produces and transmits the transport stream, the transport stream being produced by multiplexing compression coded contents of a program, and electronic program guide information including program specific information having at least an NIT, a PAT, and a PMT, and service information having at least an SDT and an EIT; a PID designating section which can designate a PID of a packet other than an NIT packet in the electronic program guide information, as a PID of a replace packet (hereinafter, referred to as replace PID); a replace PID storing device which stores the replace PID; an SIT producing section which produces an SIT packet from the service information in the received transport stream; and a packet extracting and replacing section which can replace a replace packet indicated by said replace PID storing device, and the NIT packet with the SIT packet.Type: ApplicationFiled: June 21, 2005Publication date: October 27, 2005Inventors: Masahiro Takatori, Hidekazu Suzuki
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Publication number: 20050237434Abstract: A transmitting party adds reproduction time information to each transport packet to form an extended transport packet, encapsulates the extended transport packet, adds capsule counter information, and transmits the capsule. A receiving party has a storage means, and transmits a re-send request including the capsule count information to the transmitting party when a packet loss occurs. At the receiving party, the re-sent data received overwrites data in its original storage region. At reproduction, the receiving party decodes the data after compensating for jitter referring to reproduction time information. Accordingly, a packet loss or jitter is compensated for at both transmitting and receiving parties in a communications network such as the Internet so as to prevent the occurrence of a decoding error at the receiving party.Type: ApplicationFiled: July 16, 2003Publication date: October 27, 2005Applicant: Matsushita Electric Industrial Co., Ltd.Inventors: Masahiro Takatori, Shoichi Goto
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Publication number: 20050166228Abstract: A television receiver (100) acquires numerical quantity information which indicates the number of program-related information related to a television program from program list information acquired from a television signal (11) or the like, and displays the acquired numerical quantity information on a television display screen. When a user selects a television program whose program-related information is to be acquired, the television receiver (100) acquires a URL of program-related information from an address server (200) by utilizing the program identification code of the selected television program; acquires the program-related information from an information server (300) by utilizing the acquired URL; and displays the acquired program-related information so as to be superimposed, for example, upon a television picture.Type: ApplicationFiled: June 18, 2003Publication date: July 28, 2005Applicant: Matsushita Electric Industrial Co., Ltd.Inventors: Masahiro Takatori, Hirofumi Wada, Mitsuteru Kataoka
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Publication number: 20050025481Abstract: An optical crossconnect apparatus which includes one terminal connected to a transmission path from one optical transmission terminal station and another terminal connected to a transmission path from another optical transmission terminal station, a first optical signal switch having “M1” ports and “N1” ports, through which the optical signal can pass, a second optical signal switch having “M2” ports and “N2” ports, through which the optical signal can pass, and “L” optical signal repeaters, one end connected to the “N1” ports of the first optical signal switch, and the other end connected to the “N2” ports of the second optical switch. The “N1” and the “N2” ports are equal to “L” optical signal repeaters. The “M1” ports of the first optical signal switch connected to the one terminal, and the “M2” ports of the second optical signal switch connected to the other terminal are larger than, or equal to 2.Type: ApplicationFiled: August 25, 2004Publication date: February 3, 2005Inventors: Yasuyuki Fukashiro, Yukio Hayashi, Shigeki Kitajima, Tatsuo Kanetake, Masahiro Takatori, Shoichi Hanatani, Hirohira Sano
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Publication number: 20050008025Abstract: A router apparatus 5 is provided with an ATM switch, an IP controller for performing routing control as a controller for layer 3, plural kinds of interfaces which are individually provided to plural transmission paths in which various communications are performed, and a cell multiplexing/demultiplexing unit, and manages the cell communications between respective parts on the basis of identification information. The input packet is subjected to IP processing in an interface to be converted to a cell in a common format, and the cell is serially multiplexed with a cell from another interface on a cell basis, and transmitted to the ATM switch at the cell multiplexing/demultiplexing unit. Each interface and each cell multiplexing/demultiplexing unit sets and switches the identification information for the header portion of the packet and the cell to be communicated by using a table in which the corresponding relationship of the identification information is registered.Type: ApplicationFiled: July 20, 2004Publication date: January 13, 2005Inventors: Kazuho Miki, Masahiro Takatori, Akihiko Takase, Masaru Murakami, Koji Wakayama, Tetsuro Yoshimoto, Masao Kunimoto