Patents by Inventor Koichi Tokushige
Koichi Tokushige 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: 10317106Abstract: In the control device 12 of the indoor unit 11, a plurality of communication means 14a to 14c having different communication speeds; communication speed recognizing means 18 for recognizing whether or not a communication line 15 from an outdoor unit 10 is connected to any of the communication means, from the communication speed of the control information signal; and communication means confirmation means 18 for confirming the communication means that performs the following communication based on the recognized communication speed, are provided. According to this, it is possible to recognize the communication speed of an input signal without providing a manual changeover switch. Therefore, it is possible to solve at least one or more of the problems that the installation work is complicated, that a setting error of the changeover switch is likely to be generated, and that the product prices increase.Type: GrantFiled: September 16, 2015Date of Patent: June 11, 2019Assignee: Hitachi-Johnson Controls Air Conditioning, Inc.Inventors: Yuki Nakatsu, Koichi Tokushige, Seigo Okamura
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Publication number: 20170307238Abstract: In the control device 12 of the indoor unit 11, a plurality of communication means 14a to 14c having different communication speeds; communication speed recognizing means 18 for recognizing whether or not a communication line 15 from an outdoor unit 10 is connected to any of the communication means, from the communication speed of the control information signal; and communication means confirmation means 18 for confirming the communication means that performs the following communication based on the recognized communication speed, are provided. According to this, it is possible to recognize the communication speed of an input signal without providing a manual changeover switch. Therefore, it is possible to solve at least one or more of the problems that the installation work is complicated, that a setting error of the changeover switch is likely to be generated, and that the product prices increase.Type: ApplicationFiled: September 16, 2015Publication date: October 26, 2017Inventors: Yuki NAKATSU, Koichi TOKUSHIGE, Seigo OKAMURA
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Patent number: 7770403Abstract: An air conditioning system is arranged to use a power line for communication. The air conditioning system includes one or more indoor units, one or more outdoor units, and a system controller for controlling the indoor units or outdoor units and executes communications between the indoor units and the outdoor units as overlapping a signal on the power line for supplying electric power. The outdoor units are connected with the system controller through a leased communication line. The indoor unit provides a power line communication device being connected with the power line. The outdoor unit provides a leased communication device being connected with the leased communication line. A bridge is also provided for connecting the leased communication line and the power line. The control information is exchanged mutually between the indoor units, the outdoor units and the system controller through the power line.Type: GrantFiled: February 10, 2009Date of Patent: August 10, 2010Assignee: Hitachi Appliances, Inc.Inventors: Yasuyuki Kojima, Noboru Akiyama, Takeshi Onaka, Tatsumi Yamauchi, Koichi Taniguchi, Koichi Tokushige, Noriyuki Bunkou, Keiji Sato
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Publication number: 20090145147Abstract: An air conditioning system is arranged to use a power line for communication. The air conditioning system includes one or more indoor units, one or more outdoor units, and a system controller for controlling the indoor units or outdoor units and executes communications between the indoor units and the outdoor units as overlapping a signal on the power line for supplying electric power. The outdoor units are connected with the system controller through a leased communication line. The indoor unit provides a power line communication device being connected with the power line. The outdoor unit provides a leased communication device being connected with the leased communication line. A bridge is also provided for connecting the leased communication line and the power line. The control information is exchanged mutually between the indoor units, the outdoor units and the system controller through the power line.Type: ApplicationFiled: February 10, 2009Publication date: June 11, 2009Applicant: HITACHI APPLIANCES INC.Inventors: Yasuyuki Kojima, Noboru Akiyama, Takeshi Onaka, Tatsumi Yamauchi, Koichi Taniguchi, Koichi Tokushige, Noriyuki Bunkou, Keiji Sato
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Patent number: 7523619Abstract: An air conditioning system is arranged to use a power line for communication. The air conditioning system includes one or more indoor units, one or more outdoor units, and a system controller for controlling the indoor units or outdoor units and executes communications between the indoor units and the outdoor units as overlapping a signal on the power line for supplying electric power. The outdoor units are connected with the system controller through a leased communication line. The indoor unit provides a power line communication device being connected with the power line. The outdoor unit provides a leased communication device being connected with the leased communication line. A bridge is also provided for connecting the leased communication line and the power line. The control information is exchanged mutually between the indoor units, the outdoor units and the system controller through the power line.Type: GrantFiled: April 14, 2004Date of Patent: April 28, 2009Assignee: Hitachi Appliances, Inc.Inventors: Yasuyuki Kojima, Noboru Akiyama, Takeshi Onaka, Tatsumi Yamauchi, Koichi Taniguchi, Koichi Tokushige, Noriyuki Bunkou, Keiji Sato
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Patent number: 7334417Abstract: An air conditioner and a power line communication system high in reliability and free of malfunction facilitates the installation work such as the wiring. The air conditioner for conducting communication through a power line includes a bridge unit connected to at least an outdoor unit through a transmission line, and at least an indoor unit connected from the power line through a blocking filter. A side of the bridge unit far from the outdoor unit is connected between the blocking filter and the indoor unit. The bridge unit subjects a signal from the outdoor unit to spread spectrum modulation and transmits it by superposing the resulting signal on the power line. The superposed signal is received and demodulated by the indoor unit.Type: GrantFiled: January 13, 2005Date of Patent: February 26, 2008Assignee: Hitachi Appliances, Inc.Inventors: Koichi Tokushige, Yasuyuki Kojima, Tatsumi Yamauchi, Makoto Ito, Noriyuki Bunko
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Publication number: 20050188706Abstract: An air conditioner and a power line communication system high in reliability and free of malfunction facilitates the installation work such as the wiring. The air conditioner for conducting communication through a power line includes a bridge unit connected to at least an outdoor unit through a transmission line, and at least an indoor unit connected from the power line through a blocking filter. A side of the bridge unit far from the outdoor unit is connected between the blocking filter and the indoor unit. The bridge unit subjects a signal from the outdoor unit to spread spectrum modulation and transmits it by superposing the resulting signal on the power line. The superposed signal is received and demodulated by the indoor unit.Type: ApplicationFiled: January 13, 2005Publication date: September 1, 2005Inventors: Koichi Tokushige, Yasuyuki Kojima, Tatsumi Yamauchi, Makoto Ito, Noriyuki Bunko
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Publication number: 20050005619Abstract: An air conditioning system is arranged to use a power line for communication. The air conditioning system includes one or more indoor units, one or more outdoor units, and a system controller for controlling the indoor units or outdoor units and executes communications between the indoor units and the outdoor units as overlapping a signal on the power line for supplying electric power. The outdoor units are connected with the system controller through a leased communication line. The indoor unit provides a power line communication device being connected with the power line. The outdoor unit provides a leased communication device being connected with the leased communication line. A bridge is also provided for connecting the leased communication line and the power line. The control information is exchanged mutually between the indoor units, the outdoor units and the system controller through the power line.Type: ApplicationFiled: April 14, 2004Publication date: January 13, 2005Inventors: Yasuyuki Kojima, Noboru Akiyama, Takeshi Onaka, Tatsumi Yamauchi, Koichi Taniguchi, Koichi Tokushige, Noriyuki Bunkou, Keiji Sato