Patents by Inventor Yoshifumi Atarashi
Yoshifumi Atarashi 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: 10193890Abstract: A communication apparatus receives control information of first data and a plurality of types of header information of first data, the first data being received by a first data receiver; selects a parameter from the plurality of types of header information of the first data based on a priority of a first data receiver group to which the first data receiver belongs and a storage condition, the priority being indicated by priority information, the storage condition indicating the number of entries of a whitelist that can be stored in a whitelist storage first memory; and add, to the whitelist, an entry that includes control information of the first data and at least one parameter selected above.Type: GrantFiled: August 8, 2016Date of Patent: January 29, 2019Assignee: Alaxala Networks CorporationInventors: Keigo Uchizumi, Hiroki Yano, Yoshifumi Atarashi
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Publication number: 20170063861Abstract: A communication apparatus receives control information of first data and a plurality of types of header information of first data, the first data being received by a first data receiver; selects a parameter from the plurality of types of header information of the first data based on a priority of a first data receiver group to which the first data receiver belongs and a storage condition, the priority being indicated by priority information, the storage condition indicating the number of entries of a whitelist that can be stored in a whitelist storage first memory; and add, to the whitelist, an entry that includes control information of the first data and at least one parameter selected above.Type: ApplicationFiled: August 8, 2016Publication date: March 2, 2017Inventors: Keigo UCHIZUMI, Hiroki YANO, Yoshifumi ATARASHI
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Patent number: 8594108Abstract: In an apparatus, there are provided an IP transmitting and receiving unit for transmitting and receiving an IPv4 packet and an IPv6 packet; an IP header converting unit for performing a mutual conversion of the IPv4 packet and the IPv6 packet by an IP header conversion; a DNS substituting unit for receiving a domain information capturing request sent from an IPv4 terminal or an IPv6 terminal and substituting its process; an IPv4 address capturing unit for capturing an IPv4 address from a DHCP server; and an IP address conversion information holding unit for holding an IPv6 address of the IPv6 terminal and the IPv4 address captured by the IPv4 address capturing unit in correspondence to each other. Thus, a communication with the IPv4 terminal can be executed without preliminarily fixedly allocating the IPv4 address to the IPv6 terminal.Type: GrantFiled: September 6, 2011Date of Patent: November 26, 2013Assignee: Hitachi, Ltd.Inventors: Kazuaki Tsuchiya, Naoya Ikeda, Shinichi Hamamoto, Ken Watanabe, Toshikazu Yasue, Yoshifumi Atarashi, Munechika Sumikawa, Takahisa Miyamoto, Hidemitsu Higuchi
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Patent number: 8179904Abstract: A first issue is to provide a packet transfer device for identifying a connection such as a TCP connection linked to a bandwidth control means, and provide a proxy acknowledgment for each identified connection such as TCP. A second issue is to provide a packet transfer device for providing a proxy acknowledgment for a connection such as TCP, and capable of improving throughput such as for TCP just by being installed at a network edge section connected to the communication terminal. As a means to resolve the first issue, a packet transfer device is provided that contains a means for identifying flows such as TCP flows for deciding if the proxy acknowledgment means requires proxy acknowledgment or not, based on the bandwidth conformance flow reported from the bandwidth control means.Type: GrantFiled: August 22, 2005Date of Patent: May 15, 2012Assignee: Alaxala Networks CorporationInventors: Minoru Hidaka, Yoshifumi Atarashi
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Publication number: 20120005305Abstract: In an apparatus, there are provided an IP transmitting and receiving unit for transmitting and receiving an IPv4 packet and an IPv6 packet; an IP header converting unit for performing a mutual conversion of the IPv4 packet and the IPv6 packet by an IP header conversion; a DNS substituting unit for receiving a domain information capturing request sent from an IPv4 terminal or an IPv6 terminal and substituting its process; an IPv4 address capturing unit for capturing an IPv4 address from a DHCP server; and an IP address conversion information holding unit for holding an IPv6 address of the IPv6 terminal and the IPv4 address captured by the IPv4 address capturing unit in correspondence to each other. Thus, a communication with the IPv4 terminal can be executed without preliminarily fixedly allocating the IPv4 address to the IPv6 terminal.Type: ApplicationFiled: September 6, 2011Publication date: January 5, 2012Applicant: HITACHI, LTD.Inventors: Kazuaki Tsuchiya, Naoya Ikeda, Shinichi Hamamoto, Ken Watanabe, Toshikazu Yasue, Yoshifumi Atarashi, Munechika Sumikawa, Takahisa Miyamoto, Hidemitsu Higuchi
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Patent number: 8031716Abstract: In an apparatus, there are provided an IP transmitting and receiving unit for transmitting and receiving an IPv4 packet and an IPv6 packet; an IP header converting unit for performing a mutual conversion of the IPv4 packet and the IPv6 packet by an IP header conversion; a DNS substituting unit for receiving a domain information capturing request sent from an IPv4 terminal or an IPv6 terminal and substituting its process; an IPv4 address capturing unit for capturing an IPv4 address from a DHCP server; and an IP address conversion information holding unit for holding an IPv6 address of the IPv6 terminal and the IPv4 address captured by the IPv4 address capturing unit in correspondence to each other. Thus, a communication with the IPv4 terminal can be executed without preliminarily fixedly allocating the IPv4 address to the IPv6 terminal.Type: GrantFiled: April 21, 2010Date of Patent: October 4, 2011Assignee: Hitachi, Ltd.Inventors: Kazuaki Tsuchiya, Naoya Ikeda, Shinichi Hamamoto, Ken Watanabe, Toshikazu Yasue, Yoshifumi Atarashi, Munechika Sumikawa, Takahisa Miyamoto, Hidemitsu Higuchi
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Publication number: 20100202459Abstract: In an apparatus, there are provided an IP transmitting and receiving unit for transmitting and receiving an IPv4 packet and an IPv6 packet; an IP header converting unit for performing a mutual conversion of the IPv4 packet and the IPv6 packet by an IP header conversion; a DNS substituting unit for receiving a domain information capturing request sent from an IPv4 terminal or an IPv6 terminal and substituting its process; an IPv4 address capturing unit for capturing an IPv4 address from a DHCP server; and an IP address conversion information holding unit for holding an IPv6 address of the IPv6 terminal and the IPv4 address captured by the IPv4 address capturing unit in correspondence to each other. Thus, a communication with the IPv4 terminal can be executed without preliminarily fixedly allocating the IPv4 address to the IPv6 terminal.Type: ApplicationFiled: April 21, 2010Publication date: August 12, 2010Applicant: HITACHI, LTD.Inventors: Kazuaki Tsuchiya, Naoya Ikeda, Shinichi Hamamoto, Ken Watanabe, Toshikazu Yasue, Yoshifumi Atarashi, Munechika Sumikawa, Takahisa Miyamoto, Hidemitsu Higuchi
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Patent number: 7746863Abstract: In an apparatus, there are provided an IP transmitting and receiving unit for transmitting and receiving an IPv4 packet and an IPv6 packet; an IP header converting unit for performing a mutual conversion of the IPv4 packet and the IPv6 packet by an IP header conversion; a DNS substituting unit for receiving a domain information capturing request sent from an IPv4 terminal or an IPv6 terminal and substituting its process; an IPv4 address capturing unit for capturing an IPv4 address from a DHCP server; and an IP address conversion information holding unit for holding an IPv6 address of the IPv6 terminal and the IPv4 address captured by the IPv4 address capturing unit in correspondence to each other. Thus, a communication with the IPv4 terminal can be executed without preliminarily fixedly allocating the IPv4 address to the IPv6 terminal.Type: GrantFiled: January 30, 2007Date of Patent: June 29, 2010Assignee: Hitachi, Ltd.Inventors: Kazuaki Tsuchiya, Naoya Ikeda, Shinichi Hamamoto, Ken Watanabe, Toshikazu Yasue, Yoshifumi Atarashi, Munechika Sumikawa, Takahisa Miyamoto, Hidemitsu Higuchi
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Publication number: 20070133600Abstract: In an apparatus, there are provided an IP transmitting and receiving unit for transmitting and receiving an IPv4 packet and an IPv6 packet; an IP header converting unit for performing a mutual conversion of the IPv4 packet and the IPv6 packet by an IP header conversion; a DNS substituting unit for receiving a domain information capturing request sent from an IPv4 terminal or an IPv6 terminal and substituting its process; an IPv4 address capturing unit for capturing an IPv4 address from a DHCP server; and an IP address conversion information holding unit for holding an IPv6 address of the IPv6 terminal and the IPv4 address captured by the IPv4 address capturing unit in correspondence to each other. Thus, a communication with the IPv4 terminal can be executed without preliminarily fixedly allocating the IPv4 address to the IPv6 terminal.Type: ApplicationFiled: January 30, 2007Publication date: June 14, 2007Inventors: Kazuaki Tsuchiya, Naoya Ikeda, Shinichi Hamamoto, Ken Watanabe, Toshikazu Yasue, Yoshifumi Atarashi, Munechika Sumikawa, Takahisa Miyamoto, Hidemitsu Higuchi
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Patent number: 7193998Abstract: In an apparatus, there are provided an IP transmitting and receiving unit for transmitting and receiving an IPv4 packet and an IPv6 packet; an IP header converting unit for performing a mutual conversion of the IPv4 packet and the IPv6 packet by an IP header conversion; a DNS substituting unit for receiving a domain information capturing request sent from an IPv4 terminal or an IPv6 terminal and substituting its process; an IPv4 address capturing unit for capturing an IPv4 address from a DHCP server; and an IP address conversion information holding unit for holding an IPv6 address of the IPv6 terminal and the IPv4 address captured by the IPv4 address capturing unit in correspondence to each other. Thus, a communication with the IPv4 terminal can be executed without preliminarily fixedly allocating the IPv4 address to the IPv6 terminal.Type: GrantFiled: July 13, 2005Date of Patent: March 20, 2007Assignee: Hitachi, Ltd.Inventors: Kazuaki Tsuchiya, Naoya Ikeda, Shinichi Hamamoto, Ken Watanabe, Toshikazu Yasue, Yoshifumi Atarashi, Munechika Sumikawa, Takahisa Miyamoto, Hidemitsu Higuchi
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Publication number: 20060209853Abstract: A first issue is to provide a packet transfer device for identifying a connection such as a TCP connection linked to a bandwidth control means, and provide a proxy acknowledgment for each identified connection such as TCP. A second issue is to provide a packet transfer device for providing a proxy acknowledgment for a connection such as TCP, and capable of improving throughput such as for TCP just by being installed at a network edge section connected to the communication terminal. As a means to resolve the first issue, a packet transfer device is provided that contains a means for identifying flows such as TCP flows for deciding if the proxy acknowledgment means requires proxy acknowledgment or not, based on the bandwidth conformance flow reported from the bandwidth control means.Type: ApplicationFiled: August 22, 2005Publication date: September 21, 2006Inventors: Minoru Hidaka, Yoshifumi Atarashi
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Patent number: 7072339Abstract: In an apparatus, there are provided an IP transmitting and receiving unit for transmitting and receiving an IPv4 packet and an IPv6 packet; an IP header converting unit for performing a mutual conversion of the IPv4 packet and the IPv6 packet by an IP header conversion; a DNS substituting unit for receiving a domain information capturing request sent from an IPv4 terminal or an IPv6 terminal and substituting its process; an IPv4 address capturing unit for capturing an IPv4 address from a DHCP server; and an IP address conversion information holding unit for holding an IPv6 address of the IPv6 terminal and the IPv4 address captured by the IPv4 address capturing unit in correspondence to each other. Thus, a communication with the IPv4 terminal can be executed without preliminarily fixedly allocating the IPv4 address to the IPv6 terminal.Type: GrantFiled: October 23, 2001Date of Patent: July 4, 2006Assignee: Hitachi, Ltd.Inventors: Kazuaki Tsuchiya, Naoya Ikeda, Shinichi Hamamoto, Ken Watanabe, Toshikazu Yasue, Yoshifumi Atarashi, Munechika Sumikawa, Takahisa Miyamoto, Hidemitsu Higuchi
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Patent number: 7072338Abstract: In an apparatus, there are provided an IP transmitting and receiving unit for transmitting and receiving an IPv4 packet and an IPv6 packet; an IP header converting unit for performing a mutual conversion of the IPv4 packet and the IPv6 packet by an IP header conversion; a DNS substituting unit for receiving a domain information capturing request sent from an IPv4 terminal or an IPv6 terminal and substituting its process; an IPv4 address capturing unit for capturing an IPv4 address from a DHCP server; and an IP address conversion information holding unit for holding an IPv6 address of the IPv6 terminal and the IPv4 address captured by the IPv4 address capturing unit in correspondence to each other. Thus, a communication with the IPv4 terminal can be executed without preliminarily fixedly allocating the IPv4 address to the IPv6 terminal.Type: GrantFiled: October 23, 2001Date of Patent: July 4, 2006Assignee: Hitachi, Ltd.Inventors: Kazuaki Tsuchiya, Naoya Ikeda, Shinichi Hamamoto, Ken Watanabe, Toshikazu Yasue, Yoshifumi Atarashi, Munechika Sumikawa, Takahisa Miyamoto, Hidemitsu Higuchi
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Patent number: 6985485Abstract: In an apparatus, there are provided an IP transmitting and receiving unit for transmitting and receiving an IPv4 packet and an IPv6 packet; an IP header converting unit for performing a mutual conversion of the IPv4 packet and the IPv6 packet by an IP header conversion; a DNS substituting unit for receiving a domain information capturing request sent from an IPv4 terminal or an IPv6 terminal and substituting its process; an IPv4 address capturing unit for capturing an IPv4 address from a DHCP server; and an IP address conversion information holding unit for holding an IPv6 address of the IPv6 terminal and the IPv4 address captured by the IPv4 address capturing unit in correspondence to each other. Thus, a communication with the IPv4 terminal can be executed without preliminarily fixedly allocating the IPv4 address to the IPv6 terminal.Type: GrantFiled: October 23, 2001Date of Patent: January 10, 2006Assignee: Hitachi, Ltd.Inventors: Kazuaki Tsuchiya, Naoya Ikeda, Shinichi Hamamoto, Ken Watanabe, Toshikazu Yasue, Yoshifumi Atarashi, Munechika Sumikawa, Takahisa Miyamoto, Hidemitsu Higuchi
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Publication number: 20050243828Abstract: In an apparatus, there are provided an IP transmitting and receiving unit for transmitting and receiving an IPv4 packet and an IPv6 packet; an IP header converting unit for performing a mutual conversion of the IPv4 packet and the IPv6 packet by an IP header conversion; a DNS substituting unit for receiving a domain information capturing request sent from an IPv4 terminal or an IPv6 terminal and substituting its process; an IPv4 address capturing unit for capturing an IPv4 address from a DHCP server; and an IP address conversion information holding unit for holding an IPv6 address of the IPv6 terminal and the IPv4 address captured by the IPv4 address capturing unit in correspondence to each other. Thus, a communication with the IPv4 terminal can be executed without preliminarily fixedly allocating the IPv4 address to the IPv6 terminal.Type: ApplicationFiled: July 13, 2005Publication date: November 3, 2005Inventors: Kazuaki Tsuchiya, Naoya Ikeda, Shinichi Hamamoto, Ken Watanabe, Toshikazu Yasue, Yoshifumi Atarashi, Munechika Sumikawa, Takahisa Miyamoto, Hidemitsu Higuchi
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Patent number: 6928077Abstract: In an apparatus, there are provided an IP transmitting and receiving unit for transmitting and receiving an IPv4 packet and an IPv6 packet; an IP header converting unit for performing a mutual conversion of the IPv4 packet and the IPv6 packet by an IP header conversion; a DNS substituting unit for receiving a domain information capturing request sent from an IPv4 terminal or an IPv6 terminal and substituting its process; an IPv4 address capturing unit for capturing an IPv4 address from a DHCP server; and an IP address conversion information holding unit for holding an IPv6 address of the IPv6 terminal and the IPv4 address captured by the IPv4 address capturing unit in correspondence to each other. Thus, a communication with the IPv4 terminal can be executed without preliminarily fixedly allocating the IPv4 address to the IPv6 terminal.Type: GrantFiled: May 14, 2002Date of Patent: August 9, 2005Assignee: Hitachi, Ltd.Inventors: Kazuaki Tsuchiya, Naoya Ikeda, Shinichi Hamamoto, Ken Watanabe, Toshikazu Yasue, Yoshifumi Atarashi, Munechika Sumikawa, Takahisa Miyamoto, Hidemitsu Higuchi
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Patent number: 6920137Abstract: In an apparatus, there are provided an IP transmitting and receiving unit for transmitting and receiving an IPv4 packet and an IPv6 packet; an IP header converting unit for performing a mutual conversion of the IPv4 packet and the IPv6 packet by an IP header conversion; a DNS substituting unit for receiving a domain information capturing request sent from an IPv4 terminal or an IPv6 terminal and substituting its process; an IPv4 address capturing unit for capturing an IPv4 address from a DHCP server; and an IP address conversion information holding unit for holding an IPv6 address of the IPv6 terminal and the IPv4 address captured by the IPv4 address capturing unit in correspondence to each other. Thus, a communication with the IPv4 terminal can be executed without preliminarily fixedly allocating the IPv4 address to the IPv6 terminal.Type: GrantFiled: October 23, 2001Date of Patent: July 19, 2005Assignee: Hitachi, Ltd.Inventors: Kazuaki Tsuchiya, Naoya Ikeda, Shinichi Hamamoto, Ken Watanabe, Toshikazu Yasue, Yoshifumi Atarashi, Munechika Sumikawa, Takahisa Miyamoto, Hidemitsu Higuchi
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Patent number: 6920138Abstract: In an apparatus, there are provided an IP transmitting and receiving unit for transmitting and receiving an IPv4 packet and an IPv6 packet; an IP header converting unit for performing a mutual conversion of the IPv4 packet and the IPv6 packet by an IP header conversion; a DNS substituting unit for receiving a domain information capturing request sent from an IPv4 terminal or an IPv6 terminal and substituting its process; an IPv4 address capturing unit for capturing an IPv4 address from a DHCP server; and an IP address conversion information holding unit for holding an IPv6 address of the IPv6 terminal and the IPv4 address captured by the IPv4 address capturing unit in correspondence to each other. Thus, a communication with the IPv4 terminal can be executed without preliminarily fixedly allocating the IPv4 address to the IPv6 terminal.Type: GrantFiled: May 14, 2002Date of Patent: July 19, 2005Assignee: Hitachi, Ltd.Inventors: Kazuaki Tsuchiya, Naoya Ikeda, Shinichi Hamamoto, Ken Watanabe, Toshikazu Yasue, Yoshifumi Atarashi, Munechika Sumikawa, Takahisa Miyamoto, Hidemitsu Higuchi
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Patent number: 6920136Abstract: In an apparatus, there are provided an IP transmitting and receiving unit for transmitting and receiving an IPv4 packet and an IPv6 packet; an IP header converting unit for performing a mutual conversion of the IPv4 packet and the IPv6 packet by an IP header conversion; a DNS substituting unit for receiving a domain information capturing request sent from an IPv4 terminal or an IPv6 terminal and substituting its process; an IPv4 address capturing unit for capturing an IPv4 address from a DHCP server; and an IP address conversion information holding unit for holding an IPv6 address of the IPv6 terminal and the IPv4 address captured by the IPv4 address capturing unit in correspondence to each other. Thus, a communication with the IPv4 terminal can be executed without preliminarily fixedly allocating the IPv4 address to the IPv6 terminal.Type: GrantFiled: October 23, 2001Date of Patent: July 19, 2005Assignee: Hitachi, Ltd.Inventors: Kazuaki Tsuchiya, Naoya Ikeda, Shinichi Hamamoto, Ken Watanabe, Toshikazu Yasue, Yoshifumi Atarashi, Munechika Sumikawa, Takahisa Miyamoto, Hidemitsu Higuchi
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Patent number: 6912219Abstract: In an apparatus, there are provided an IP transmitting and receiving unit for transmitting and receiving an IPv4 packet and an IPv6 packet; an IP header converting unit for performing a mutual conversion of the IPv4 packet and the IPv6 packet by an IP header conversion; a DNS substituting unit for receiving a domain information capturing request sent from an IPv4 terminal or an IPv6 terminal and substituting its process; an IPv4 address capturing unit for capturing an IPv4 address from a DHCP server; and an IP address conversion information holding unit for holding an IPv6 address of the IPv6 terminal and the IPv4 address captured by the IPv4 address capturing unit in correspondence to each other. Thus, a communication with the IPv4 terminal can be executed without preliminarily fixedly allocating the IPv4 address to the IPv6 terminal.Type: GrantFiled: May 14, 2002Date of Patent: June 28, 2005Assignee: Hitachi, Ltd.Inventors: Kazuaki Tsuchiya, Naoya Ikeda, Shinichi Hamamoto, Ken Watanabe, Toshikazu Yasue, Yoshifumi Atarashi, Munechika Sumikawa, Takahisa Miyamoto, Hidemitsu Higuchi