Patents by Inventor Yutaka Suwa
Yutaka Suwa 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: 10542200Abstract: A camera transmits a DECT registration request including DECT camera information. A controller stores the DECT camera information and transmits a DECT registration response including DECT controller information. The camera stores the DECT controller information and transmits a wireless LAN registration request including wireless LAN camera information. The controller stores the wireless LAN camera information and transmits a wireless LAN registration response including wireless LAN controller information. The camera stores the wireless LAN controller information.Type: GrantFiled: February 12, 2018Date of Patent: January 21, 2020Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMANT CO., LTD.Inventor: Yutaka Suwa
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Publication number: 20180343379Abstract: A camera transmits a DECT registration request including DECT camera information. A controller stores the DECT camera information and transmits a DECT registration response including DECT controller information. The camera stores the DECT controller information and transmits a wireless LAN registration request including wireless LAN camera information. The controller stores the wireless LAN camera information and transmits a wireless LAN registration response including wireless LAN controller information. The camera stores the wireless LAN controller information.Type: ApplicationFiled: February 12, 2018Publication date: November 29, 2018Inventor: Yutaka SUWA
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Patent number: 9479318Abstract: A channel determination method is disclosed that can avoid performance deterioration caused by interference even in a situation in which radio waves from other communication apparatuses including a microwave oven using the same frequency band are mixed. This method detects a predetermined preamble in a received signal when performing carrier sensing while switching between reception frequencies of a receiving section. The method examines, using a counter, how often electric field strength exceeds a predetermined threshold for each channel during the carrier sensing, disables, upon detecting a signal from another 802.11 apparatus, a channel from which the signal is detected and also disables a channel for which the counter shows a count value exceeding the threshold.Type: GrantFiled: June 27, 2014Date of Patent: October 25, 2016Assignee: Panasonic Intellectual Property Management Co., Ltd.Inventor: Yutaka Suwa
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Patent number: 9386548Abstract: A base station apparatus includes a wireless communication unit, a wired communication unit, and a communication timing correction unit. If the wireless communication unit fails to receive a synchronization signal from another base station apparatus at given reception timing, the wired communication unit transmits a synchronization state confirmation signal for confirming a synchronization state between the base station and another base station apparatus, and receives a synchronization state response signal including a determination result of the synchronization state. The communication timing correction unit corrects a communication timing based on the synchronization state response signal.Type: GrantFiled: April 18, 2013Date of Patent: July 5, 2016Assignee: Panasonic CorporationInventors: Hiroyuki Ishihara, Yutaka Suwa, Akira Shibuta
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Patent number: 9288839Abstract: Each of the base station apparatuses measures received electric field strength of receivable signals from other base station apparatuses, and superiority in cases of indirectly connecting each of the base station apparatuses to another or other plural base station apparatuses by a route in which one or plural base station apparatuses are interposed and a case of making direct connection between the base station apparatuses are determined based on a measurement result of the received electric field strength and thereby, the base station apparatus used as the highest master is decided.Type: GrantFiled: May 8, 2013Date of Patent: March 15, 2016Assignee: Panasonic Intellectual Property Management Co., Ltd.Inventor: Yutaka Suwa
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Patent number: 9270419Abstract: A device divides a sampled sound signal into a high frequency signal and a low frequency signal, individually encodes the high frequency signal and the low frequency signal, and generates error detection code pertinent to the high frequency ADPCM data and the low frequency ADPCM data. The device replaces data pertinent to some of a plurality of bits which configure the low frequency ADPCM data with the error detection code and transmits them. A receiver side receives the high frequency ADPCM data and the low frequency ADPCM data, and individually processes the high frequency ADPCM data and the low frequency ADPCM data in accordance with a value of the error detection code.Type: GrantFiled: March 25, 2015Date of Patent: February 23, 2016Assignee: Panasonic Intellectual Property Management Co., Ltd.Inventors: Akira Shibuta, Yutaka Suwa, Hiroyuki Ishihara, Kyoichi Obana
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Patent number: 9204465Abstract: In a wireless communication system that conducts a communication between a base station and a terminal the base station includes a first communication unit using a first communication system of a TDMA system, and a second communication unit using a second communication system, and the terminal includes a third communication unit using the first communication system, and a fourth communication unit using the second communication system. The base station transmits a control signal in the first communication system with the use of the first communication unit, and the base station determines timing of transmission for the second communication unit according to timing of TDMA of the first communication unit. The third communication unit receives the control signal transmitted from the base station in the first communication system, and the fourth communication unit controls receiving operation according to information included in the control signal.Type: GrantFiled: November 10, 2011Date of Patent: December 1, 2015Assignee: Pansonic Intellectual Property Management Co., Ltd.Inventors: Yutaka Suwa, Hiroyuki Ishihara, Akira Shibuta, Konomi Suwa
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Publication number: 20150200748Abstract: A device divides a sampled sound signal into a high frequency signal and a low frequency signal, individually encodes the high frequency signal and the low frequency signal, and generates error detection code pertinent to the high frequency ADPCM data and the low frequency ADPCM data. The device replaces data pertinent to some of a plurality of bits which configure the low frequency ADPCM data with the error detection code and transmits them. A receiver side receives the high frequency ADPCM data and the low frequency ADPCM data, and individually processes the high frequency ADPCM data and the low frequency ADPCM data in accordance with a value of the error detection code.Type: ApplicationFiled: March 25, 2015Publication date: July 16, 2015Inventors: Akira SHIBUTA, Yutaka SUWA, Hiroyuki ISHIHARA, Kyoichi OBANA
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Patent number: 9021318Abstract: A voice processing apparatus is provided in an ADPCM (Adaptive Differential Pulse Code Modulation) voice transmission system in which voice data that is differentially quantized through an ADPCM scheme is transmitted. The voice processing apparatus includes an error detector which detects whether or not an error occurs in a transmission frame containing data that indicates a differential value, and an error determiner which determines a level of the error detected by the error detector when the error detector detects the error. The voice processing apparatus also includes a voice processor which corrects the voice data with a correction value depending on the level of the error detected by the error detector and an ADPCM decoder which decodes the voice data corrected by the voice processor.Type: GrantFiled: March 25, 2013Date of Patent: April 28, 2015Assignee: Panasonic Intellectual Property Management Co., Ltd.Inventors: Yutaka Suwa, Yukio Naka, Hiroyuki Ishihara, Norihiro Toyomura
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Publication number: 20150003344Abstract: A channel determination method is disclosed that can avoid performance deterioration caused by interference even in a situation in which radio waves from other communication apparatuses including a microwave oven using the same frequency band are mixed. This method detects a predetermined preamble in a received signal when performing carrier sensing while switching between reception frequencies of a receiving section. The method examines, using a counter, how often electric field strength exceeds a predetermined threshold for each channel during the carrier sensing, disables, upon detecting a signal from another 802.11 apparatus, a channel from which the signal is detected and also disables a channel for which the counter shows a count value exceeding the threshold.Type: ApplicationFiled: June 27, 2014Publication date: January 1, 2015Inventor: Yutaka Suwa
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Publication number: 20140169342Abstract: A base station apparatus includes a wireless communication unit, a wired communication unit, and a communication timing correction unit. If the wireless communication unit fails to receive a synchronization signal from another base station apparatus at given reception timing, the wired communication unit transmits a synchronization state confirmation signal for confirming a synchronization state between the base station and another base station apparatus, and receives a synchronization state response signal including a determination result of the synchronization state. The communication timing correction unit corrects a communication timing based on the synchronization state response signal.Type: ApplicationFiled: April 18, 2013Publication date: June 19, 2014Applicant: PANASONIC CORPORATIONInventors: Hiroyuki ISHIHARA, Yutaka SUWA, Akira SHIBUTA
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Publication number: 20130301474Abstract: Each of the base station apparatuses measures received electric field strength of receivable signals from other base station apparatuses, and superiority in cases of indirectly connecting each of the base station apparatuses to another or other plural base station apparatuses by a route in which one or plural base station apparatuses are interposed and a case of making direct connection between the base station apparatuses are determined based on a measurement result of the received electric field strength and thereby, the base station apparatus used as the highest master is decided.Type: ApplicationFiled: May 8, 2013Publication date: November 14, 2013Applicant: PANASONIC CORPORATIONInventor: Yutaka SUWA
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Publication number: 20130279483Abstract: A base station apparatus includes a wireless communication unit, a wired communication unit, and a communication timing correction unit. If the wireless communication unit fails to receive a synchronization signal from another base station apparatus at given reception timing, the wired communication unit transmits a synchronization state confirmation signal for confirming a synchronization state between the base station and another base station apparatus, and receives a synchronization state response signal including a determination result of the synchronization state. The communication timing correction unit corrects a communication timing based on the synchronization state response signal.Type: ApplicationFiled: April 18, 2013Publication date: October 24, 2013Applicant: PANASONIC CORPORATIONInventors: Hiroyuki ISHIHARA, Yutaka SUWA, Akira SHIBUTA
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Publication number: 20130272277Abstract: In a wireless communication system that conducts a communication between a base station and a terminal the base station includes a first communication unit using a first communication system of a TDMA system, and a second communication unit using a second communication system, and the terminal includes a third communication unit using the first communication system, and a fourth communication unit using the second communication system. The base station transmits a control signal in the first communication system with the use of the first communication unit, and the base station determines timing of transmission for the second communication unit according to timing of TDMA of the first communication unit. The third communication unit receives the control signal transmitted from the base station in the first communication system, and the fourth communication unit controls receiving operation according to information included in the control signal.Type: ApplicationFiled: November 10, 2011Publication date: October 17, 2013Applicant: Panasonic CorporationInventors: Yutaka Suwa, Hiroyuki Ishihara, Akira Shibuta
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Patent number: 8457185Abstract: A wireless communication device sets a digital link on a wireless channel between a master device and a slave device, compresses a sound signal in an ADPCM scheme, and carries the sound signal in a sound packet to perform communication. In a master device, a PCM signal is converted into ADPCM data by an ADPCM encoding unit. Next, the least significant bit of n-bits is set according to the number of “1” of the n-bits of the ADPCM data by a transmission conversion table. In a slave device, it is determined whether error has occurred according to the number of “1” of the n-bit data in received data. If error exists, the n-bit sound data is converted into mute data through a reception conversion table. The sound data converted through the reception conversion table is converted into a PCM signal from an ADPCM format by an ADPCM decoding unit.Type: GrantFiled: December 25, 2009Date of Patent: June 4, 2013Assignee: Panasonic CorporationInventors: Yutaka Suwa, Hiroyuki Ishihara
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Patent number: 8447241Abstract: A wireless communication apparatus is provided. The apparatus includes a wireless transceiver which conducts communication with another wireless communication apparatus using a channel belonging to a first band of a plurality of frequency bands, and a switching unit which switches the channel being used by the wireless transceiver to a different channel of a second band of the plurality of frequency bands other than the first band.Type: GrantFiled: May 26, 2009Date of Patent: May 21, 2013Assignee: Panasonic CorporationInventors: Yutaka Suwa, Hiroyuki Ishihara, Toshihiko Sakata, Koji Hayashida, Akira Shibuta, Norihiro Toyomura, Kyoichi Obana
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Patent number: 8407536Abstract: A voice processing apparatus includes: an error detector which detects an error in a frame containing voice data; a correction value calculator which determines a level of the error detected by the error detector and calculates a correction value according to the level; and a voice data corrector which corrects the voice data by using the correction value calculated by the correction value calculator.Type: GrantFiled: February 4, 2009Date of Patent: March 26, 2013Assignee: Panasonic CorporationInventors: Yutaka Suwa, Yukio Naka, Hiroyuki Ishihara, Norihiro Toyomura
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Patent number: 8300576Abstract: A base unit of a radio communication apparatus of the present invention includes a controller that discriminates whether or not company identifying information transmitted from a cordless handset is specific information in connecting a line in a Bluetooth (BT) communication mode, performs communication in another radio communication standard (company's own mode) on determining that the company identifying information is the specific information, and performs the communication in a BT standard on determining that the company identifying information is not the specific information, and a registering unit for registering an ID peculiar to the apparatus.Type: GrantFiled: February 20, 2008Date of Patent: October 30, 2012Assignee: Panasonic CorporationInventor: Yutaka Suwa
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Publication number: 20110261869Abstract: The present invention provides a wireless communication device and a wireless communication system which can improve the error detection accuracy with the sound quality maintained to some extent even if the communication environment is deteriorated. A cordless phone establishes a digital link on a wireless channel between a master device and a slave device, compresses a sound signal in an ADPCM scheme, and carries the sound signal in a sound packet to perform communication. In a master device side, a PCM signal is converted into ADPCM data by an ADPCM encoding unit. Next, the least significant bit of n-bits is set according to the number of “1” of the n-bits of the ADPCM data by a transmission conversion table. In a slave device side, it is determined whether an error has occurred according to the number of “1” of the n-bit data in received data. If the error exists, the n-bit sound data is converted into mute data through a reception conversion table.Type: ApplicationFiled: December 25, 2009Publication date: October 27, 2011Applicant: PANASONIC CORPORATIONInventors: Yutaka Suwa, Hiroyuki Ishihara
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Publication number: 20090291644Abstract: A wireless communication apparatus is provided. The apparatus includes a wireless transceiver which conducts communication with another wireless communication apparatus using a channel belonging to a first band of a plurality of frequency bands, and a switching unit which switches the channel being used by the wireless transceiver to a different channel of a second band of the plurality of frequency bands other than the first band.Type: ApplicationFiled: May 26, 2009Publication date: November 26, 2009Applicant: PANASONIC CORPORATIONInventors: Yutaka Suwa, Hiroyuki Ishihara, Toshihiko Sakata, Koji Hayashida, Akira Shibuta, Norihiro Toyomura, Kyoichi Obana