Patents by Inventor Minoru Hidaka
Minoru Hidaka 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: 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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Patent number: 8094558Abstract: To control a bandwidth without the need for a large-capacity buffer. This invention provides a packet transfer apparatus connected to first device and second device, with a network therebetween, including: an input unit that receives a packet from the first device; a packet storage unit that stores the packet; a packet processing unit that stores the packet in the packet storage unit; a packet checking unit that checks whether the packet is related to data request; a packet analyzing unit that analyzes the amount of data requested by the data request; a transfer control unit that controls transfer of the packet on the basis of the analyzed amount of data; and an output unit that sends the received packet to the second device.Type: GrantFiled: December 27, 2004Date of Patent: January 10, 2012Assignee: Hitachi, Ltd.Inventors: Masayuki Takase, Minoru Hidaka, Takeki Yazaki, Tomoyuki Oku
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Patent number: 7529251Abstract: A high quality network is provided that eliminates the sorting time for sorting through registering look-up conditions, such as source and destination MAC addresses, in a content addressable memory, by generating a routing or flow control look-up key, and then selectively activating some of the physical banks in the content addressable memory with the look-up key during look-up for the look-up conditions. The look-up key is generated by extracting a part or all of the data contained in a packet header.Type: GrantFiled: August 26, 2005Date of Patent: May 5, 2009Assignee: Hitachi, Ltd.Inventors: Tomoyuki Oku, Takeki Yazaki, Michitaka Okuno, Minoru Hidaka, Shinichi Akahane
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Patent number: 7394804Abstract: Session Initiation Protocol (SIP), a protocol used in VoIP (Voice over IP) communications, enables a caller to send a SIP message to a callee with his/her UserID concealed from the callee, which in turn, prevents A SIP server from making an attempt to manage the caller. If the same IP Telephone address is used whenever the IP call is made, a third party may guess the IP address easily during conversation. The SIP message sent by the caller is converted and conversion tables are managed by the SIP server. The IP Telephone modifies its IP address for each IP call. Thus, the caller can make a call to the callee with his/her UserID concealed from the callee using the SIP server with a message conversion function and communications carriers having SIP servers installed to manage the callers using their conversion tables. It is difficult to any malicious third party to guess the IP Telephone address, because the IP Telephone address is modified for each call.Type: GrantFiled: July 17, 2003Date of Patent: July 1, 2008Assignee: Hitachi, Ltd.Inventors: Tatsuhiko Miyata, Kenichi Sakamoto, Minoru Hidaka, Kazuyoshi Hoshino, Satoshi Kiyotou, Kazuma Yumoto
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Publication number: 20080098788Abstract: A press working apparatus is provided with a first working unit and a second working unit 14. In the first working unit, a first stage is performed for forming a half-blanked portion 15 with a projecting shape at a region where a through hole P is to be formed in a sheet W. In the second working unit 14, a second stage S2 is performed in which the half-blanked portion 15 is blanked from the sheet W by a second punch 26 and a second die 23. Also in the second stage S2, when a blanked body is blanked from the sheet W, shaving work is performed with respect to a side wall surface Pa on a region of the sheet W where the blanked body has been blanked.Type: ApplicationFiled: January 25, 2006Publication date: May 1, 2008Applicant: AISIN AW CO., LTD.Inventors: Takao Taniguchi, Shigeharu Ikeda, Minoru Hidaka, Takuya Katoh, Mitsuo Ueno
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Patent number: 7337465Abstract: A peer-to-peer communication apparatus connected to an IP network acquires, from a peer's communication apparatus, presence information including information for judging a communication security environment of the peer's communication apparatus and a security policy to be applied by the peer's communication apparatus to a packet, displays the presence information and security policy information such that a user can judge the prosperity of the security policy information based on the presence information, and processes a data packet to be transmitted to the peer's communication apparatus in accordance with the security policy approved by the user.Type: GrantFiled: October 30, 2003Date of Patent: February 26, 2008Assignee: Hitachi, Ltd.Inventors: Satoshi Kiyoto, Kazuyoshi Hoshino, Kazuma Yumoto, Minoru Hidaka
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Patent number: 7275899Abstract: Machining coolant/lubricant is used to operate a piston of a clamping-side coupler by feeding same via a coolant feed passage to a clamping pressure chamber through a first check valve and a clamping pressure fluid passage. The same coolant/lubricant is discharged from an unclamping pressure chamber through an unclamping pressure fluid passage and a second check valve. The resulting movement of the piston downwards brings a clamp member into contact with a workpiece to thereby clamp the workpiece on a table. Thus, a dedicated pressure source for clamping can be dispensed with.Type: GrantFiled: August 3, 2004Date of Patent: October 2, 2007Assignee: Aisin AW Co., Ltd.Inventors: Takao Taniguchi, Shigeharu Ikeda, Minoru Hidaka, Tomoyoshi Sato, Hiroshi Osada, Takao Kobayashi, Hironao Kinpara, Shigeto Noma, Kazutaka Murai, Masato Sakakibara
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Patent number: 7203195Abstract: A method or apparatus for transferring packets, which enables fast lines to be housed for a high load service that requires many calculations in an edge node in a communication network, in which data flows are concentrated. Information obtained from an input packet is held in a table entry in the apparatus and whether to perform such a processing as encryption, etc. is decided according to the state of the source or destination of the input packet or the internal state of the apparatus, thereby performing such a processing as encryption only for necessary packets and reducing the number of calculations.Type: GrantFiled: February 20, 2002Date of Patent: April 10, 2007Assignee: Hitachi, Ltd.Inventors: Minoru Hidaka, Mitsuru Nagasaka, Satoru Tsukada
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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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Publication number: 20060123136Abstract: A high quality network is provided by not generating a sorting time when registering look-up conditions in a content addressable memory, and the physical banks activated during look-up of the look-up conditions are limited.Type: ApplicationFiled: August 26, 2005Publication date: June 8, 2006Inventors: Tomoyuki Oku, Takeki Yazaki, Michitaka Okuno, Minoru Hidaka, Shinichi Akahane
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Publication number: 20060077915Abstract: To control a bandwidth without the need for a large-capacity buffer. This invention provides a packet transfer apparatus connected to first device and second device, with a network therebetween, including: an input unit that receives a packet from the first device; a packet storage unit that stores the packet; a packet processing unit that stores the packet in the packet storage unit; a packet checking unit that checks whether the packet is related to data request; a packet analyzing unit that analyzes the amount of data requested by the data request; a transfer control unit that controls transfer of the packet on the basis of the analyzed amount of data; and an output unit that sends the received packet to the second device.Type: ApplicationFiled: December 27, 2004Publication date: April 13, 2006Inventors: Masayuki Takase, Minoru Hidaka, Takeki Yazaki, Tomoyuki Oku
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Publication number: 20050100008Abstract: Session Initiation Protocol (SIP), a protocol used in VoIP (Voice over IP) communications, enables a caller to send a SIP message to a callee with his/her UserID concealed from the callee, which in turn, prevents A SIP server from making an attempt to manage the caller. If the same IP Telephone address is used whenever the IP call is made, a third party may guess the IP address easily during conversation. The SIP message sent by the caller is converted and conversion tables are managed by the SIP server. The IP Telephone modifies its IP address for each IP call. Thus, the caller can make a call to the callee with his/her UserID concealed from the callee using the SIP server with a message conversion function and communications carriers having SIP servers installed to manage the callers using their conversion tables. It is difficult to any malicious third party to guess the IP Telephone address, because the IP Telephone address is modified for each call.Type: ApplicationFiled: July 17, 2003Publication date: May 12, 2005Inventors: Tatsuhiko Miyata, Kenichi Sakamoto, Minoru Hidaka, Kazuyuoshi Hoshino, Satoshi Kiyotou, Kazuma Yumoto
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Publication number: 20050036845Abstract: Machining coolant/lubricant is used to operate a piston of a clamping-side coupler by feeding same via a coolant feed passage to a clamping pressure chamber through a first check valve and a clamping pressure fluid passage. The same coolant/lubricant is discharged from an unclamping pressure chamber through an unclamping pressure fluid passage and a second check valve. The resulting movement of the piston downwards brings a clamp member into contact with a workpiece to thereby clamp the workpiece on a table. Thus, a dedicated pressure source for clamping can be dispensed with.Type: ApplicationFiled: August 3, 2004Publication date: February 17, 2005Inventors: Takao Taniguchi, Shigeharu Ikeda, Minoru Hidaka, Tomoyoshi Sato, Hiroshi Osada, Takao Kobayashi, Hironao Kinpara, Shigeto Noma, Kazutaka Murai, Masato Sakakibara
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Publication number: 20040181689Abstract: A peer-to-peer communication apparatus connected to an IP network acquires, from a peer's communication apparatus, presence information including information for judging a communication security environment of the peer's communication apparatus and a security policy to be applied by the peer's communication apparatus to a packet, displays the presence information and security policy information such that a user can judge the prosperity of the security policy information based on the presence information, and processes a data packet to be transmitted to the peer's communication apparatus in accordance with the security policy approved by the user.Type: ApplicationFiled: October 30, 2003Publication date: September 16, 2004Inventors: Satoshi Kiyoto, Kazuyoshi Hoshino, Kazuma Yumoto, Minoru Hidaka
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Patent number: 6763393Abstract: The reserved request type of searched information distribution server having a first function unit for issuing a search request to another server connected to the Internet via the Internet so as to collect desired data from a WWW server specified by the search request according to the schedule specified by the search request when receiving request of data searching in a WWW server from a client terminal, and a second function unit for receiving searched data via a communication satellite.Type: GrantFiled: December 7, 2001Date of Patent: July 13, 2004Assignees: Hitachi, Ltd., Hitachi Information Network, Ltd.Inventors: Toshio Hirosawa, Tsutomu Ito, Yoshihiro Ishii, Minoru Hidaka
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Patent number: 6718391Abstract: A reserved request type of searched information distribution server having a first function unit for issuing a search request to another server connected to the Internet via the Internet so as to collect desired data from a WWW server specified by the search request according to a schedule specified by the search request when receiving request of data searching in a WWW server from a client terminal, and a second function unit for receiving searched data via a communication satellite.Type: GrantFiled: February 16, 1999Date of Patent: April 6, 2004Assignees: Hitachi, Ltd., Hitachi Information Network, Ltd.Inventors: Toshio Hirosawa, Tsutomu Ito, Yoshihiro Ishii, Minoru Hidaka
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Publication number: 20030237002Abstract: The disclosed invention provides a network system that achieves connecting a terminal to a plurality of networks simultaneously and forwarding packets correctly. The network system is built such that an access node connected with a terminal and a network are connected by a relay node and includes an authentication node with which the terminal can communicate and which assigns the terminal an address associated with the network. The address assigned to the terminal is mapped to identification code of the relay node and stored on the access node.Type: ApplicationFiled: December 11, 2002Publication date: December 25, 2003Applicant: Hitachi, Ltd.Inventors: Takumi Oishi, Minoru Hidaka
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Patent number: 6595092Abstract: A cutting tip has a cutting face and a flank face. A compression face for plastically deforming a workpiece is provided between the cutting face and the flank face. The cutting tip allows work-hardening to be easily performed by plastic deformation of the cut-finished surface during cutting, without adding a separate process step.Type: GrantFiled: July 14, 2000Date of Patent: July 22, 2003Assignee: Aisin AW Co., Ltd.Inventors: Takao Taniguchi, Kouji Ohbayashi, Shigeharu Ikeda, Minoru Hidaka, Hironori Fukushima
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Publication number: 20030103505Abstract: A method or apparatus for transferring packets, which enables fast lines to be housed for a high load service that requires many calculations in an edge node in a communication network, in which data flows are concentrated. Information obtained from an input packet is held in a table entry in the apparatus and whether to perform such a processing as encryption, etc. is decided according to the state of the source or destination of the input packet or the internal state of the apparatus, thereby performing such a processing as encryption only for necessary packets and reducing the number of calculations.Type: ApplicationFiled: February 20, 2002Publication date: June 5, 2003Applicant: Hitachi, Ltd.Inventors: Minoru Hidaka, Mitsuru Nagasaka, Satoru Tsukada
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Patent number: 6418465Abstract: A messaging processing system which includes a process control table for storing the control information of a process corresponding to access terminals connected through a public network in a form that identifiers indicating the ‘priority processing’ are added to the control information, and a scheduler that executes the process having the identifier indicating the ‘priority processing’ in preference to the other processes during the dispatching processing of the process.Type: GrantFiled: February 24, 1999Date of Patent: July 9, 2002Assignee: Hitachi, Ltd.Inventors: Toshio Hirosawa, Tsutomu Ito, Minoru Hidaka, Takehiro Morishige, Yutaka Nara, Atsushi Ueoka