Patents by Inventor Masanori Kamata
Masanori Kamata 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: 7848342Abstract: A listening-or-viewing charge is differentiated with bit rates depending on distributed programs. A broadband access server for holding user channels by PPP and replicating and transferring multicast packets have a counter for counting the number of distributed multicast packets and the number of distributed bytes at each multicast group address. The counter values (byte counts and packet counts) when a user joins a multicast group and when the user leaves the multicast group and a multicast session ID containing a PPP user ID and a multicast group address are sent to a multicast accounting radius server. The multicast accounting server provides an accounting on a basis of the byte counts, the packet counts, or a bit rate.Type: GrantFiled: December 2, 2008Date of Patent: December 7, 2010Assignee: Hitachi, Ltd.Inventors: Masanori Kamata, Kengo Ijima, Hiroaki Miyata, Ken Oouchi, Takatoshi Kajiwara
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Patent number: 7792972Abstract: In a wide area Ethernet network, an edge side gateway (EGW) acquires layer 2 tunneling control information from an authentication server when a PADI is received from a user terminal, stores the correspondence between the source address of the PADI and the layer 2 tunneling control information in its management table, encapsulates the PADI in accordance with the layer 2 tunneling control information, and transmits the encapsulated PADI packet to the wide area Ethernet network. A core side gateway (CGW) having received the encapsulated PADI packet stores the correspondence between the tunneling control information and the source address extracted from the received packet in its management table, and forwards the PADI obtained by decapsulating the received packet to a broadband access server. Thereafter, each of the EGW and CGW forward received packets for the user after converting their format by referencing to the management tables.Type: GrantFiled: June 22, 2007Date of Patent: September 7, 2010Assignee: Hitachi, Ltd.Inventors: Masanori Kamata, Hiroaki Miyata, Tadashi Takahashi
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Patent number: 7733859Abstract: A packet forwarding apparatus with a function of registering packet forwarding control information for each user terminal into a user management table during PPPoE connection and authentication phases in which the apparatus carries out predetermined communication procedures with each user terminal. During DHCP and IP forwarding phases following the authentication phase, the packet forwarding apparatus controls packet forwarding based on the user management table. Packets are forwarded in the form of PPPoE frame until the authentication phase is completed and packets are forwarded in the form of Ethernet frame in the DHCP and IP forwarding phases.Type: GrantFiled: May 21, 2007Date of Patent: June 8, 2010Assignee: Hitachi, Ltd.Inventors: Tadashi Takahashi, Hiroaki Miyata, Takashi Yokoyama, Masanori Kamata
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Patent number: 7656872Abstract: L2TP packet forwarding apparatus to be connected to at least two LACs (L2TP Access Concentrators) via L2TP sessions to receive packets transmitted from a gateway, which accommodates user terminals, in the form of a L2TP packet encapsulated in Bridge over PPP, has a lookup table indicating the correspondence of tunnel ID/session ID pairs to an identifier (VPN-IDs) of a wide area network to which a plurality of user terminals belong. The packet forwarding apparatus specifies an VPN-ID from the lookup table based on the tunnel ID and the session ID of a received packet and forwards, if it is confirmed that another tunnel ID/session ID pair associated with the same VPN-ID exists in the lookup table, the received packet to another L2TP session identified by the another tunnel ID/session ID pair in the form of a L2TP packet.Type: GrantFiled: July 13, 2005Date of Patent: February 2, 2010Assignee: Hitachi Communication Technologies, Ltd.Inventors: Tetsuro Yoshimoto, Mariko Yamada, Masanori Kamata
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Patent number: 7626934Abstract: A packet transfer apparatus has a controller for controlling transmission of a PADO packet on the basis of the information that is previously set in the packet transfer apparatus in order that the PADO packet can be transmitted back to the terminals or a PADI can be discarded when the PADI packet sent from the terminals to the packet transfer apparatus does not have any Service-Name specified. In addition, another controller is used. This controller is provided so that, when a Service-Name that indicates the type of an offered communication service is specified in the PADI packet, it can judge whether the Service-Name is previously registered in a memory and decide to transmit the PADO packet to the terminal if the Service-Name is previously registered, but to discard the PADI packet if the Service-Name is not registered.Type: GrantFiled: December 7, 2005Date of Patent: December 1, 2009Assignee: Hitachi Communication Technologies, Ltd.Inventors: Ken Oouchi, Takatoshi Kajiwara, Hiroaki Miyata, Masanori Kamata
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Patent number: 7577141Abstract: An IPv4-IPv6 multicast address translation table is dynamically created, so that it is unnecessary to register multicast servers in advance. When an IPv4 MC group address exists as a response of a DNS server to a DNS request of an IPv6 MC client or when an IPv6 MC group address exists as a response of the DNS server to a DNS request of the IPv4 MC client H1 to H4, DNS Proxy D3 requests an MC adaptive translator T1 to generate a virtual IPv6 MC group address or a virtual IPv4 MC group address, and the MC adaptive translator T1 generates a virtual IPv6 MC group address or a virtual IPv4 MC group address from an address pool, and also creates an MC address translation table, whereby the MC address translation of IPv4-IPv6 can be dynamically performed.Type: GrantFiled: September 27, 2006Date of Patent: August 18, 2009Assignee: Hitachi Communication Technologies, Ltd.Inventors: Masanori Kamata, Hiroaki Miyata, Masayuki Hino
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Publication number: 20090080427Abstract: A listening-or-viewing charge is differentiated with bit rates depending on distributed programs. A broadband access server for holding user channels by PPP and replicating and transferring multicast packets have a counter for counting the number of distributed multicast packets and the number of distributed bytes at each multicast group address. The counter values (byte counts and packet counts) when a user joins a multicast group and when the user leaves the multicast group and a multicast session ID containing a PPP user ID and a multicast group address are sent to a multicast accounting radius server. The multicast accounting server provides an accounting on a basis of the byte counts, the packet counts, or a bit rate.Type: ApplicationFiled: December 2, 2008Publication date: March 26, 2009Inventors: Masanori Kamata, Kengo Ijima, Hiroaki Miyata, Ken Oouchi, Takatoshi Kajiwara
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Patent number: 7474669Abstract: A listening-or-viewing charge is differentiated with bit rates depending on distributed programs. A broadband access server for holding user channels by PPP and replicating and transferring multicast packets have a counter for counting the number of distributed multicast packets and the number of distributed bytes at each multicast group address. The counter values (byte counts and packet counts) when a user joins a multicast group and when the user leaves the multicast group and a multicast session ID containing a PPP user ID and a multicast group address are sent to a multicast accounting radius server. The multicast accounting server provides an accounting on a basis of the byte counts, the packet counts, or a bit rate.Type: GrantFiled: July 27, 2005Date of Patent: January 6, 2009Assignee: Hitachi Communication Technologies, Ltd.Inventors: Masanori Kamata, Kengo Ijima, Hiroaki Miyata, Ken Oouchi, Takatoshi Kajiwara
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Patent number: 7352479Abstract: An image recording apparatus according the present invention includes a copy section for copying an original, a transmission section for transmitting the original via a telephone line, an input section for inputting the number of sheets to be copied and a destination telephone number, a determination section for determining a desired mode based on the input numerical values, and an execution stop section for stopping the execution of a mode other than the desired mode. In addition, in a transmission method according to the present invention, data input during a copy mode is retained in an image recording apparatus with a facsimile and a copy functions, the mode is switched to a facsimile mode with the input data retained, and the input data is used to execute facsimile transmission.Type: GrantFiled: February 29, 2000Date of Patent: April 1, 2008Assignee: Panasonic Communications Co., Ltd.Inventor: Masanori Kamata
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Publication number: 20080028077Abstract: In a wide area Ethernet network, an edge side gateway (EGW) acquires layer 2 tunneling control information from an authentication server when a PADI is received from a user terminal, stores the correspondence between the source address of the PADI and the layer 2 tunneling control information in its management table, encapsulates the PADI in accordance with the layer 2 tunneling control information, and transmits the encapsulated PADI packet to the wide area Ethernet network. A core side gateway (CGW) having received the encapsulated PADI packet stores the correspondence between the tunneling control information and the source address extracted from the received packet in its management table, and forwards the PADI obtained by decapsulating the received packet to a broadband access server. Thereafter, each of the EGW and CGW forward received packets for the user after converting their format by referencing to the management tables.Type: ApplicationFiled: June 22, 2007Publication date: January 31, 2008Inventors: Masanori KAMATA, Hiroaki Miyata, Tadashi Takahashi
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Publication number: 20070274290Abstract: A packet forwarding apparatus with a function of registering packet forwarding control information for each user terminal into a user management table during PPPoE connection and authentication phases in which the apparatus carries out predetermined communication procedures with each user terminal. During DHCP and IP forwarding phases following the authentication phase, the packet forwarding apparatus controls packet forwarding based on the user management table. Packets are forwarded in the form of PPPoE frame until the authentication phase is completed and packets are forwarded in the form of Ethernet frame in the DHCP and IP forwarding phases.Type: ApplicationFiled: May 21, 2007Publication date: November 29, 2007Inventors: Tadashi Takahashi, Hiroaki Miyata, Takashi Yokoyama, Masanori Kamata
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Publication number: 20070171930Abstract: An IPv4-IPv6 multicast address translation table is dynamically created, so that it is unnecessary to register multicast servers in advance. When an IPv4 MC group address exists as a response of a DNS server to a DNS request of an IPv6 MC client or when an IPv6 MC group address exists as a response of the DNS server to a DNS request of the IPv4 MC client H1 to H4, DNS Proxy D3 requests an MC adaptive translator T1 to generate a virtual IPv6 MC group address or a virtual IPv4 MC group address, and the MC adaptive translator T1 generates a virtual IPv6 MC group address or a virtual IPv4 MC group address from an address pool, and also creates an MC address translation table, whereby the MC address translation of IPv4-IPv6 can be dynamically performed.Type: ApplicationFiled: September 27, 2006Publication date: July 26, 2007Inventors: Masanori Kamata, Hiroaki Miyata, Masayuki Hino
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Publication number: 20060146818Abstract: A packet transfer apparatus has a controller for controlling transmission of a PADO packet on the basis of the information that is previously set in the packet transfer apparatus in order that the PADO packet can be transmitted back to the terminals or a PADI can be discarded when the PADI packet sent from the terminals to the packet transfer apparatus does not have any Service-Name specified. In addition, another controller is used. This controller is provided so that, when a Service-Name that indicates the type of an offered communication service is specified in the PADI packet, it can judge whether the Service-Name is previously registered in a memory and decide to transmit the PADO packet to the terminal if the Service-Name is previously registered, but to discard the PADI packet if the Service-Name is not registered.Type: ApplicationFiled: December 7, 2005Publication date: July 6, 2006Inventors: Ken Oouchi, Takatoshi Kajiwara, Hiroaki Miyata, Masanori Kamata
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Publication number: 20060120374Abstract: L2TP packet forwarding apparatus to be connected to at least two LACs (L2TP Access Concentrators) via L2TP sessions to receive packets transmitted from a gateway, which accommodates user terminals, in the form of a L2TP packet encapsulated in Bridge over PPP, has a lookup table indicating the correspondence of tunnel ID/session ID pairs to an identifier (VPN-IDs) of a wide area network to which a plurality of user terminals belong. The packet forwarding apparatus specifies an VPN-ID from the lookup table based on the tunnel ID and the session ID of a received packet and forwards, if it is confirmed that another tunnel ID/session ID pair associated with the same VPN-ID exists in the lookup table, the received packet to another L2TP session identified by the another tunnel ID/session ID pair in the form of a L2TP packet.Type: ApplicationFiled: July 13, 2005Publication date: June 8, 2006Inventors: Tetsuro Yoshimoto, Mariko Yamada, Masanori Kamata
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Publication number: 20060109795Abstract: A listening-or-viewing charge is differentiated with bit rates depending on distributed programs. A broadband access server for holding user channels by PPP and replicating and transferring multicast packets have a counter for counting the number of distributed multicast packets and the number of distributed bytes at each multicast group address. The counter values (byte counts and packet counts) when a user joins a multicast group and when the user leaves the multicast group and a multicast session ID containing a PPP user ID and a multicast group address are sent to a multicast accounting radius server. The multicast accounting server provides an accounting on a basis of the byte counts, the packet counts, or a bit rate.Type: ApplicationFiled: July 27, 2005Publication date: May 25, 2006Inventors: Masanori Kamata, Kengo Ijima, Hiroaki Miyata, Ken Oouchi, Takatoshi Kajiwara
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Publication number: 20030058470Abstract: A multifunctional machine is provided that includes a receiver that receives a binary communication image, an input section that inputs a copy image, and a recording section that records the communication image and the copy image. The multifunctional machine further includes a first processing section that performs image processing on the binary communication image for recording by the recording section, a second processing section that converts a binary copy image into a multilevel copy image, the second processing section performing image processing on the converted multilevel copy image for recording by the recording section, and a switching section that determines whether the binary communication data has a predetermined resolution.Type: ApplicationFiled: September 18, 2002Publication date: March 27, 2003Applicant: Matsushita Graphic Communication Systems, Inc.Inventor: Masanori Kamata
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Patent number: 6137598Abstract: An image recording apparatus according the present invention includes a copy section for copying an original, a transmission section for transmitting the original via a telephone line, an input section for inputting the number of sheets to be copied and a destination telephone number, a determination section for determining a desired mode based on the input numerical values, and an execution stop section for stopping the execution of a mode other than the desired mode. In addition, in a transmission method according to the present invention, data input during a copy mode is retained in an image recording apparatus with a facsimile and a copy functions, the mode is switched to a facsimile mode with the input data retained, and the input data is used to execute facsimile transmission.Type: GrantFiled: March 27, 1998Date of Patent: October 24, 2000Assignee: Mitsushita Graphic Communication Systems, Inc.Inventor: Masanori Kamata
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Patent number: 5220437Abstract: A scanning control system for use in a transmission or reception system of a facsimile equipment for controlling the secondary scanning speed of an image reader or recorder provided therein. In the transmission system, the scanning control system is coupled to an image memory for storing image information inputted from the image reader and supplying the image information to a coder, and responsive to the input signal and output signal of the image memory so as to detect the remaining capacity of the image memory. The scanning control system controls the secondary scanning speed in accordance with the detection results of the remaining capacity of the image memory.Type: GrantFiled: November 27, 1990Date of Patent: June 15, 1993Assignee: Matsushita Graphic Communication Systems, Inc.Inventors: Hiroshi Saegusa, Masanori Kamata, Yasushi Nakajima, Akihito Mochizuki, Akihiro Nagai