Patents by Inventor Yasuhisa Tsujita

Yasuhisa Tsujita 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).

  • Patent number: 10583698
    Abstract: When receiving a transmission signal, a reception controller obtains a pulse count value of each of rotation sensor units. Next, the reception controller compares, with a threshold, the difference between the obtained pulse count value and a previously obtained pulse count value. The reception controller identifies, based on the result of comparison between the difference between pulse count values and the threshold, the positions of wheel assemblies, in each of which a transmitter is provided.
    Type: Grant
    Filed: May 25, 2016
    Date of Patent: March 10, 2020
    Assignee: PACIFIC INDUSTRIAL CO., LTD.
    Inventor: Yasuhisa Tsujita
  • Patent number: 10556471
    Abstract: A tire condition detecting device includes a controlling section that determines whether there is an anomaly in the tire based on the condition of the tire detected by the condition detecting section. A protocol that is designated by a trigger device is defined as a first protocol, and protocols that are not designated by the trigger device are defined as second protocols. When determining that there is no anomaly in the tire, the controlling section causes the transmission section to transmit only the data signals using the first protocol. When determining that there is an anomaly in the tire, the controlling section causes the transmission section to transmit the data signals using the second protocols in addition to the data signals using the first protocol.
    Type: Grant
    Filed: July 14, 2016
    Date of Patent: February 11, 2020
    Assignee: PACIFIC INDUSTRIAL CO., LTD.
    Inventors: Yasuhisa Tsujita, Takashi Takeyama
  • Patent number: 10525779
    Abstract: Each of transmitters attached to respective wheel assemblies transmits transmission data when the wheel assembly reaches any of specific angles set at equal angular intervals. A receiver mounted in the vehicle obtains the rotation angles of the wheel assemblies from a rotation angle detecting section upon reception of the transmission data and obtains specific rotation angles by correcting the obtained rotation angles by using the value of the angle difference between the specific angles. The specific rotation angles are values that can be regarded as rotation angles that are obtained upon reception of the transmission data transmitted at the same specific angle. The receiver identifies the correspondence between ID codes included in the transmission data and the wheel assemblies by using the specific rotation angles.
    Type: Grant
    Filed: April 27, 2017
    Date of Patent: January 7, 2020
    Assignee: PACIFIC INDUSTRIAL CO., LTD.
    Inventor: Yasuhisa Tsujita
  • Patent number: 10479148
    Abstract: A reception control section obtains a rotation angle of each wheel assembly when a reception circuit receives transmission data. The reception control section calculates the absolute value of the difference between the obtained rotation angle and a previously obtained rotation angle. The reception control section determines whether the absolute value of the difference is included in a reference range or a specific range. The reference range includes 0. The specific range includes the angle difference between specific angles.
    Type: Grant
    Filed: April 27, 2017
    Date of Patent: November 19, 2019
    Assignee: PACIFIC INDUSTRIAL CO., LTD.
    Inventors: Yasuhisa Tsujita, Keiyu Fujii
  • Publication number: 20190329604
    Abstract: A transmitter includes a condition detecting section, which detects a condition of a tire, a memory section, which stores identification information, a transmitting section, which transmits a data signal, a trigger receiving section, which receives a trigger signal transmitted from a trigger device, and a controlling section. When the trigger receiving section receives the trigger signal, the controlling section generates data corresponding to the trigger signal and causes the transmitting section to transmit the data signal, which includes the generated data. The controlling section generates encrypted data when the trigger receiving section receives a trigger signal of unmodulated waves. The controlling section generates non-encrypted data that includes the identification information when the trigger receiving section receives a trigger signal of modulated waves.
    Type: Application
    Filed: October 30, 2017
    Publication date: October 31, 2019
    Inventors: Takashi TAKEYAMA, Yasuhisa TSUJITA
  • Patent number: 10432329
    Abstract: A transmitter includes a transmitter control section, which generates transmission data to be transmitted to a receiver. The transmission data contains variable data and verification data. The verification data is data for causing a verifying section of the receiver to verify an ID code registered in the transmitter against an ID code registered in the receiver. The transmitter control section is capable of switching between a first state and a second state. The first state is a state in which fixed data representing identification information is transmitted as the verification data. The second state is a state in which computation data computed from the variable data and the fixed data is transmitted as the verification data.
    Type: Grant
    Filed: March 29, 2017
    Date of Patent: October 1, 2019
    Assignee: PACIFIC INDUSTRIAL CO., LTD.
    Inventor: Yasuhisa Tsujita
  • Publication number: 20190084360
    Abstract: A tire condition detecting device includes a controlling section that determines whether there is an anomaly in the tire based on the condition of the tire detected by the condition detecting section. A protocol that is designated by a trigger device is defined as a first protocol, and protocols that are not designated by the trigger device are defined as second protocols. When determining that there is no anomaly in the tire, the controlling section causes the transmission section to transmit only the data signals using the first protocol. When determining that there is an anomaly in the tire, the controlling section causes the transmission section to transmit the data signals using the second protocols in addition to the data signals using the first protocol.
    Type: Application
    Filed: July 14, 2016
    Publication date: March 21, 2019
    Inventors: Yasuhisa TSUJITA, Takashi TAKEYAMA
  • Publication number: 20190070911
    Abstract: A reception control section obtains a rotation angle of each wheel assembly when a reception circuit receives transmission data. The reception control section calculates the absolute value of the difference between the obtained rotation angle and a previously obtained rotation angle. The reception control section determines whether the absolute value of the difference is included in a reference range or a specific range. The reference range includes 0. The specific range includes the angle difference between specific angles.
    Type: Application
    Filed: April 27, 2017
    Publication date: March 7, 2019
    Inventors: Yasuhisa TSUJITA, Keiyu FUJII
  • Publication number: 20190070908
    Abstract: Each of transmitters attached to respective wheel assemblies transmits transmission data when the wheel assembly reaches any of specific angles set at equal angular intervals. A receiver mounted in the vehicle obtains the rotation angles of the wheel assemblies from a rotation angle detecting section upon reception of the transmission data and obtains specific rotation angles by correcting the obtained rotation angles by using the value of the angle difference between the specific angles. The specific rotation angles are values that can be regarded as rotation angles that are obtained upon reception of the transmission data transmitted at the same specific angle. The receiver identifies the correspondence between ID codes included in the transmission data and the wheel assemblies by using the specific rotation angles.
    Type: Application
    Filed: April 27, 2017
    Publication date: March 7, 2019
    Inventor: Yasuhisa TSUJITA
  • Publication number: 20190036625
    Abstract: A transmitter includes a transmitter control section, which generates transmission data to be transmitted to a receiver. The transmission data contains variable data and verification data. The verification data is data for causing a verifying section of the receiver to verify an ID code registered in the transmitter against an ID code registered in the receiver. The transmitter control section is capable of switching between a first state and a second state. The first state is a state in which fixed data representing identification information is transmitted as the verification data. The second state is a state in which computation data computed from the variable data and the fixed data is transmitted as the verification data.
    Type: Application
    Filed: March 29, 2017
    Publication date: January 31, 2019
    Inventor: Yasuhisa TSUJITA
  • Patent number: 10124632
    Abstract: A tire condition detecting apparatus includes a condition detecting section, a transmission section, and a transmission-side control section. The transmission section is configured to transmit a signal that contains information related to the condition of the tire to a receiver, which includes a reception-side control section. The reception-side control section identifies the position of the wheel assembly in which the tire condition detecting apparatus is provided based on the received signal strength indication (RSSI) of the signal. The transmission-side control section is configured to cause a position detecting signal and an instruction signal to be transmitted from the transmission section to the receiver. The position detecting signal is configured to cause the reception-side control section to identify the position of the tire condition detecting apparatus.
    Type: Grant
    Filed: June 26, 2015
    Date of Patent: November 13, 2018
    Assignee: PACIFIC INDUSTRIAL CO., LTD.
    Inventor: Yasuhisa Tsujita
  • Patent number: 10086661
    Abstract: A tire condition detecting apparatus includes a transmitting section, a receiving section, a control section, a property detecting section, and a battery, which is a power source for the apparatus. The control section operates in a control mode that is selected from a normal mode and a power saving mode. In the power saving mode, power consumption associated with reception of the wirelessly transmitted signal from the external device is less than that in the normal mode. When the amount of change in the electrical property of a valve stem detected by the property detecting section exceeds a reference change amount, the control section switches the control mode to the normal mode.
    Type: Grant
    Filed: September 17, 2015
    Date of Patent: October 2, 2018
    Assignee: PACIFIC INDUSTRIAL CO., LTD.
    Inventor: Yasuhisa Tsujita
  • Publication number: 20180147899
    Abstract: When receiving a transmission signal, a reception controller obtains a pulse count value of each of rotation sensor units. Next, the reception controller compares, with a threshold, the difference between the obtained pulse count value and a previously obtained pulse count value. The reception controller identifies, based on the result of comparison between the difference between pulse count values and the threshold, the positions of wheel assemblies, in each of which a transmitter is provided.
    Type: Application
    Filed: May 25, 2016
    Publication date: May 31, 2018
    Inventor: Yasuhisa TSUJITA
  • Patent number: 9913005
    Abstract: A wheel assembly position identifying apparatus includes transmitters, each of which is provided in one of wheel assemblies, and a receiver, which is provided in a body of a vehicle. Each transmitter includes a transmission section, an acceleration sensor, and a transmission-side control section. The receiver includes a reception section, which is configured to receive the signals, and a reception-side control section, which is configured to execute a first identifying process and a second identifying process. In the first identifying process, the positions of the wheel assemblies, in which the corresponding transmitters are provided, are identified based on variations of the rotational positions of the wheel assemblies at the time when the constant position signals are received. In the second identifying process, the positions of the wheel assemblies, in which the corresponding transmitters are provided, are identified based on the received signal strength indications (RSSIs).
    Type: Grant
    Filed: June 26, 2015
    Date of Patent: March 6, 2018
    Assignee: PACIFIC INDUSTRIAL CO., LTD.
    Inventor: Yasuhisa Tsujita
  • Patent number: 9835477
    Abstract: A wheel assembly rotational position identifying apparatus includes an acceleration detector, a control section, and a battery. The control section identifies the rotational position of the wheel assembly based on an acceleration detected by the acceleration detector. The control section operates in a control mode that is a selected one of a normal mode and a power saving mode, in which a power consumption associated with identification of the rotational position of the wheel assembly is smaller than that in the normal mode. The control section switches the control mode to the normal mode when an initiation condition is met in accordance with an input from outside. The control section also switches the control mode to the power saving mode when a termination condition is met in the normal mode.
    Type: Grant
    Filed: September 17, 2015
    Date of Patent: December 5, 2017
    Assignee: PACIFIC INDUSTRIAL CO., LTD.
    Inventor: Yasuhisa Tsujita
  • Patent number: 9788087
    Abstract: A wheel assembly position identifying apparatus includes transmitters, each of which is provided in one of wheel assemblies and includes a transmission section and a control section, and a receiver, which includes a receiving section, a measuring section, and a wheel assembly position identifying section. The wheel assembly position identifying section is configured to detect, more than once, a rotational position of each wheel assembly at which the RSSI has an extreme value, for each position detecting signal received during one rotation of the wheel assembly, and identify the position of the wheel assembly in which the corresponding transmitter is provided based on variation of the rotational position of the wheel assembly at which the RSSI has the extreme value.
    Type: Grant
    Filed: June 26, 2015
    Date of Patent: October 10, 2017
    Assignee: PACIFIC INDUSTRIAL CO., LTD.
    Inventor: Yasuhisa Tsujita
  • Publication number: 20170267036
    Abstract: A tire condition detecting apparatus includes a transmitting section, a receiving section, a control section, a property detecting section, and a battery, which is a power source for the apparatus. The control section operates in a control mode that is selected from a normal mode and a power saving mode. In the power saving mode, power consumption associated with reception of the wirelessly transmitted signal from the external device is less than that in the normal mode. When the amount of change in the electrical property of a valve stem detected by the property detecting section exceeds a reference change amount, the control section switches the control mode to the normal mode.
    Type: Application
    Filed: September 17, 2015
    Publication date: September 21, 2017
    Inventor: Yasuhisa TSUJITA
  • Publication number: 20170227382
    Abstract: A wheel assembly rotational position identifying apparatus includes an acceleration detector, a control section, and a battery. The control section identifies the rotational position of the wheel assembly based on an acceleration detected by the acceleration detector. The control section operates in a control mode that is a selected one of a normal mode and a power saving mode, in which a power consumption associated with identification of the rotational position of the wheel assembly is smaller than that in the normal mode. The control section switches the control mode to the normal mode when an initiation condition is met in accordance with an input from outside. The control section also switches the control mode to the power saving mode when a termination condition is met in the normal mode.
    Type: Application
    Filed: September 17, 2015
    Publication date: August 10, 2017
    Inventor: Yasuhisa TSUJITA
  • Publication number: 20170164072
    Abstract: A wheel assembly position identifying apparatus includes transmitters, each of which is provided in one of wheel assemblies and includes a transmission section and a control section, and a receiver, which includes a receiving section, a measuring section, and a wheel assembly position identifying section. The wheel assembly position identifying section is configured to detect, more than once, a rotational position of each wheel assembly at which the RSSI has an extreme value, for each position detecting signal received during one rotation of the wheel assembly, and identify the position of the wheel assembly in which the corresponding transmitter is provided based on variation of the rotational position of the wheel assembly at which the RSSI has the extreme value.
    Type: Application
    Filed: June 26, 2015
    Publication date: June 8, 2017
    Inventor: Yasuhisa TSUJITA
  • Publication number: 20170155977
    Abstract: A wheel assembly position identifying apparatus includes transmitters, each of which is provided in one of wheel assemblies, and a receiver, which is provided in a body of a vehicle. Each transmitter includes a transmission section, an acceleration sensor, and a transmission-side control section. The receiver includes a reception section, which is configured to receive the signals, and a reception-side control section, which is configured to execute a first identifying process and a second identifying process. In the first identifying process, the positions of the wheel assemblies, in which the corresponding transmitters are provided, are identified based on variations of the rotational positions of the wheel assemblies at the time when the constant position signals are received. In the second identifying process, the positions of the wheel assemblies, in which the corresponding transmitters are provided, are identified based on the received signal strength indications (RSSIs).
    Type: Application
    Filed: June 26, 2015
    Publication date: June 1, 2017
    Inventor: Yasuhisa TSUJITA