Patents by Inventor Yuji Igata
Yuji Igata 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: 9300362Abstract: A low-pass filter (63) is disposed between a residential power line (3a) and a vehicle power line (7), and attenuates a power line communication high-frequency signal. A power line communication section (60) is connected in parallel to the low-pass filter (63), performs conversion to a signal of a frequency lower than that of a power line communication high-frequency signal superimposed on the residential power line (3a) from a charge command apparatus, and communicates with a vehicle via the vehicle power line (7) by means of the converted low-frequency signal. A control section (65) controls connection or disconnection of a connection section (64) based on a charge command apparatus command signal demodulated by the power line communication section (60).Type: GrantFiled: July 11, 2012Date of Patent: March 29, 2016Assignee: Panasonic Intellectual Property Management Co., Ltd.Inventor: Yuji Igata
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Patent number: 9090174Abstract: Provided are a power supply device and a power supply method which can carry out proper charging even when a plurality of electric automobiles are connected to a charging stand. A charging stand (1) supplies power to electric automobiles (2, 3) by way of the charging cables (4, 5). The charging stand (1) is provided with: a charging cable identification signal transmitter (9) for transmitting a charging cable identification signal to the electric automobiles by way of the charging cables (4, 5); an electric automobile identification signal receiver (10) for receiving an electric automobile identification signal and a charging cable identification signal from the electric automobiles (2, 3) by way of the charging cables (4, 5); and a controller (11) for charging the electric automobiles (2, 3) when the electric automobile identification signal receiver (10) receives the electric automobile identification signal and the charging cable identification signal.Type: GrantFiled: December 15, 2011Date of Patent: July 28, 2015Assignee: Panasonic Intellectual Property Management Co., LtdInventors: Shigekiyo Nosaka, Yuji Igata
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Patent number: 9083205Abstract: Disclosed is a vehicle charging device that can perform communication even if the vehicle charging device and a charging instruction device are connected to power line pairs having different phases in a multiple-wire power line. The vehicle charging device includes: a power line communication unit that performs communication over a multiple-wire power line or a power line for vehicles; a power line connection unit that connects a pair of power lines within the multiple-wire power line to the power line for vehicles; and a control unit that controls the connection or the disconnection of the power line connection unit. The power line communication unit selects a signal from a pair of power lines within the multiple-wire power line and communicates with the charging instruction device, and performs communication with the vehicle over the power line for vehicles.Type: GrantFiled: January 28, 2011Date of Patent: July 14, 2015Assignee: Panasonic Intellectual Property Management Co., Ltd.Inventor: Yuji Igata
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Patent number: 9024579Abstract: A power line communication apparatus that enables communication to be performed between an authentication apparatus and a vehicle, thereby enabling authentication processing to be performed, even before power is supplied to a communication section from a charging apparatus or an electrical storage apparatus. This power line communication apparatus has a communication section that communicates with a PC serving as an authentication apparatus outside the body of the vehicle via a power line, and a battery that is connected to the communication section and supplies power to the communication section; and the communication section performs authentication communication with the PC via the power line before power is supplied from the charging apparatus or the electrical storage apparatus.Type: GrantFiled: January 25, 2012Date of Patent: May 5, 2015Assignee: Panasonic Intellectual Property Management Co., Ltd.Inventor: Yuji Igata
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Patent number: 8847751Abstract: A first communication apparatus 100 transmits a pilot signal which was generated by a pilot signal generation section 14, at predetermined timing, and detects an unbalance component of a transmission line 300 at the time of pilot signal transmission in an unbalance component detection section 13, and controls a transmission signal in such a manner that an unbalance component is reduced by a transmission control section 12 on the basis of the detected unbalance component.Type: GrantFiled: December 22, 2005Date of Patent: September 30, 2014Assignee: Panasonic CorporationInventors: Fumio Ichihara, Akihiro Yamashita, Hidekazu Matsunobu, Nobutaka Kodama, Masahiro Maki, Tsunehiro Hanada, Yuji Igata, Toshiyuki Wakisaka, Kazuaki Kusune, Mutsuhiko Oishi, Ryota Yukizane
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Patent number: 8774159Abstract: A frequency band is divided into N subchannels. Sub-channels are first allocated for a power line communication system having a higher priority, such as public communication or the like. Sub-channels for a power line communication system having a relatively low priority, such as in-home communication or the like, are allocated from free subchannels. In this case, the subchannels used by the power line communication system having the high priority are limited to a plurality of consecutive subchannels from an upper side or a lower side of the frequency band.Type: GrantFiled: December 22, 2010Date of Patent: July 8, 2014Assignee: Panasonic CorporationInventors: Go Kuroda, Akio Kurobe, Koji Ikeda, Hisao Koga, Yuji Igata
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Publication number: 20130257345Abstract: Provided are a power supply device and a power supply method which can carry out proper charging even when a plurality of electric automobiles are connected to a charging stand. A charging stand (1) supplies power to electric automobiles (2, 3) by way of the charging cables (4, 5). The charging stand (1) is provided with: a charging cable identification signal transmitter (9) for transmitting a charging cable identification signal to the electric automobiles by way of the charging cables (4, 5); an electric automobile identification signal receiver (10) for receiving an electric automobile identification signal and a charging cable identification signal from the electric automobiles (2, 3) by way of the charging cables (4, 5); and a controller (11) for charging the electric automobiles (2, 3) when the electric automobile identification signal receiver (10) receives the electric automobile identification signal and the charging cable identification signal.Type: ApplicationFiled: December 15, 2011Publication date: October 3, 2013Applicant: Panasonic CorporationInventors: Shigekiyo Nosaka, Yuji Igata
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Patent number: 8537819Abstract: PLC modems and a PLC communication system that includes the PLC modems receive a multicast packet from a video server of a multicast group. When a MAC address table is set therein, the PLC modems and the PLC communication system convert the multicast packet into a unicast packet and transmit the converted packet to a power line. When no MAC address is set, the PLC modems and the PLC communication system transmit the multicast packet to the power line.Type: GrantFiled: November 9, 2006Date of Patent: September 17, 2013Assignee: Panasonic CorporationInventors: Hisao Koga, Nobutaka Kodama, Yasushi Yokomitsu, Yuji Igata, Masahiko Haraguchi, Toru Yasukawa
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Patent number: 8451857Abstract: A coexistence controller which performs management and control of time division for coexistence, is provided in a power line communication modem which has a function as a QoS controller for a QoS type communication system and a power line communication modem for a best-effort type communication system. In the QoS type communication system, by controlling allocation of a communication band in accordance with priorities given to the communication systems by cooperation of the coexistence controller and the QoS controller, the power line communication systems having different schemes can coexist.Type: GrantFiled: April 20, 2011Date of Patent: May 28, 2013Assignee: Panasonic CorporationInventors: Akio Kurobe, Koji Ikeda, Go Kuroda, Hisao Koga, Yuji Igata
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Patent number: 8374256Abstract: A communication system includes a synchronizing signal generator that generates a synchronizing signal based on a timing of an alternating waveform in a power line, a data communicating circuit that performs the data communication, and a communication controller that controls to acquire a transmitting right utilizing a timing of the synchronizing signal and to control the communication circuit in accordance with whether or not the communication apparatus acquires the transmitting right.Type: GrantFiled: May 7, 2009Date of Patent: February 12, 2013Assignee: Panasonic CorporationInventors: Nobutaka Kodama, Hisao Koga, Yuji Igata, Shinichiro Ohmi, Go Kuroda
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Publication number: 20130026988Abstract: Disclosed is a vehicle charging device that can perform communication even if the vehicle charging device and a charging instruction device are connected to power line pairs having different phases in a multiple-wire power line. The vehicle charging device (6) is provided with: a power line communication unit (61) that performs communication over a multiple-wire power line or a power line (7) for vehicles; a power line connection unit (63) that connects a pair of power lines within the multiple-wire power line to the power line (7) for vehicles; and a control unit (62) that controls the connection or the disconnection of the power line connection unit (63). The power line communication unit (61) selects a signal from a pair of power lines within the multiple-wire power line and communicates with the charging instruction device, and performs communication with the vehicle over the power line (7) for vehicles.Type: ApplicationFiled: January 28, 2011Publication date: January 31, 2013Applicant: PANASONIC CORPORATIONInventor: Yuji Igata
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Publication number: 20120274278Abstract: A low-pass filter (63) is disposed between a residential power line (3a) and a vehicle power line (7), and attenuates a power line communication high-frequency signal. A power line communication section (60) is connected in parallel to the low-pass filter (63), performs conversion to a signal of a frequency lower than that of a power line communication high-frequency signal superimposed on the residential power line (3a) from a charge command apparatus, and communicates with a vehicle via the vehicle power line (7) by means of the converted low-frequency signal. A control section (65) controls connection or disconnection of a connection section (64) based on a charge command apparatus command signal demodulated by the power line communication section (60).Type: ApplicationFiled: July 11, 2012Publication date: November 1, 2012Applicant: PANASONIC CORPORATIONInventor: Yuji IGATA
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Patent number: 8295390Abstract: A communications device 100, which performs data communication, includes an AC cycle sensor 30 which is connected to a power line 106 supplied with an a.c. voltage and generates a synchronous signal SS at timing of an a.c. voltage waveform AC of the power line 106; a data communicator 10 for performing data communication; and a communications controller 20 which performs communication of a control signal including information showing at least one of a communications device and a communications standard and controls the data communicator 101. When the a.c. voltage supplied to the power line 106 is an N-phase and when the cycle of the a.c. voltage waveform is T, data communication to be performed in a communication period subsequent to the period is controlled on the basis of the control signal included in the period of T/2M on condition that M is a natural multiple of N.Type: GrantFiled: December 30, 2009Date of Patent: October 23, 2012Assignees: Panasonic Corporation, Mitsubishi Electric Corporation, Sony CorporationInventors: Hisao Koga, Yuji Igata, Go Kuroda, Koji Ikeda, Akio Kurobe, Hirotoshi Yamada, Hiromu Okamoto, Yoshinori Mizugai, Takehiro Sugita, Junichi Ohshima, Shigeru Takasu
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Publication number: 20120221164Abstract: A power controller (21) controls electric devices that are capable of performing power control in accordance with a resident's intention, even when the power control is performed on electric devices in a house. The power controller (21) includes: a candidate creating section (216) that creates information about candidate combinations of electric devices to be subjected to power control based on power use information about the respective electric devices; a display section (212) that displays the information about the candidate combinations of electric devices; and a power control section (218) that controls the power use by each of the electric devices. The power control section (218) controls the power use by a candidate combination of electric devices selected in accordance with selection information input to the input section.Type: ApplicationFiled: May 9, 2012Publication date: August 30, 2012Applicant: PANASONIC CORPORATIONInventor: Yuji IGATA
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Publication number: 20120119701Abstract: A power line communication apparatus that enables communication to be performed between an authentication apparatus and a vehicle, thereby enabling authentication processing to be performed, even before power is supplied to a communication section from a charging apparatus or an electrical storage apparatus. This power line communication apparatus has a communication section that communicates with a PC serving as an authentication apparatus outside the body of the vehicle via a power line, and a battery that is connected to the communication section and supplies power to the communication section; and the communication section performs authentication communication with the PC via the power line before power is supplied from the charging apparatus or the electrical storage apparatus.Type: ApplicationFiled: January 25, 2012Publication date: May 17, 2012Applicant: PANASONIC CORPORATIONInventor: Yuji IGATA
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Patent number: 8040235Abstract: A relay apparatus includes a plurality of connecting terminals, such as a modem connecting terminal, a power line connecting terminal, an electric appliance connecting terminal and an antenna line connecting terminal; a selector that selects at least one connecting terminal from among the plurality of connecting terminals to transmit and receive a communication signal; and a control circuit that controls the selector. The relay apparatus further includes a first communication filter that passes signals in a frequency band used for communication by a power line communication modem and that blocks signals in other frequency bands, and a second communication filter that passes signals in a frequency band used for communication by another electric appliance and that blocks signals in other frequency bands.Type: GrantFiled: April 6, 2006Date of Patent: October 18, 2011Assignee: Panasonic CorporationInventors: Hisao Koga, Yuji Igata, Ryota Yukizane, Fumio Ichihara, Mutsuhiko Oishi
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Patent number: 8036233Abstract: A power line communication apparatus transmits a signal to a first power line communication apparatus through a power line connecting to a second power line communication apparatus. The power line communication apparatus includes an information retriever for retrieving transmission rate information indicating both a first transmission rate and second transmission rate. The first transmission rate correspond to a first path of the power line along which the signal is directly transmitted to the first power line communication apparatus, and the second transmission rate corresponds to a second path of the power line along which the signal is transmitted through the second power line communication apparatus to the first power line communication apparatus. A selector selects, based on the transmission rate information, a path corresponding to a higher transmission rate among the first and second paths. A transmitter transmits the signal through the selected path.Type: GrantFiled: September 14, 2007Date of Patent: October 11, 2011Assignee: Panasonic CorporationInventors: Yasushi Yokomitsu, Akio Yao, Yuji Igata, Noriaki Maehara
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Publication number: 20110222554Abstract: A coexistence controller which performs management and control of time division for coexistence, is provided in a power line communication modem which has a function as a QoS controller for a QoS type communication system and a power line communication modem for a best-effort type communication system. In the QoS type communication system, by controlling allocation of a communication band in accordance with priorities given to the communication systems by cooperation of the coexistence controller and the QoS controller, the power line communication systems having different schemes can coexist.Type: ApplicationFiled: April 20, 2011Publication date: September 15, 2011Inventors: Akio KUROBE, Koji Ikeda, Go Kuroda, Hisao Koga, Yuji Igata
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Patent number: 7978698Abstract: A terminal for performing multiple access transmission suitable to a transmission path having varied characteristics includes a transmission/reception section, a control unit, a transfer management section, and an external interface section. Specifically, the terminal refers to an IGMP (MLD) message received by the transmission/reception section to classify a transmitter host and a relay device of the message based on a characteristic of the transmission path, and performs a multiple access transmission of a multicast packet in a form suitable to the characteristic of the transmission path.Type: GrantFiled: March 16, 2007Date of Patent: July 12, 2011Assignee: Panasonic CorporationInventors: Tsuyoshi Yamaguchi, Yuji Igata, Yasushi Yokomitsu, Toru Yasukawa, Shinichiro Ohmi, Koji Ikeda, Masanori Kataoka, Junji Yano, Go Kuroda
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Patent number: 7953105Abstract: A coexistence controller which performs management and control of time division for coexistence, is provided in a power line communication modem which has a function as a QoS controller for a QoS type communication system and a power line communication modem for a best-effort type communication system. In the QoS type communication system, by controlling allocation of a communication band in accordance with priorities given to the communication systems by cooperation of the coexistence controller and the QoS controller, the power line communication systems having different schemes can coexist.Type: GrantFiled: May 25, 2006Date of Patent: May 31, 2011Assignee: Panasonic CorporationInventors: Akio Kurobe, Koji Ikeda, Go Kuroda, Hisao Koga, Yuji Igata