Patents by Inventor Suppasit Chuwatsawat

Suppasit Chuwatsawat 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).

  • Photoplethysmography (PPG) apparatus and method for determining physiological changes
    Patent number: 11944416
    Abstract: Disclosed is a photoplethysmography (PPG) apparatus (100) for determining physiological changes, comprising: a light source to emit alight signal having a variable intensity dependent on a skin characteristic; first and second photodetectors (130) operable to detect a reflection of the light signal to provide a combined current signal; and a signal processing circuit operable to convert the current signal into a PPG signal for determining the physiological changes.
    Type: Grant
    Filed: July 26, 2018
    Date of Patent: April 2, 2024
    Assignee: Nitto Denko Corporation
    Inventors: Estanislao Glenn Bondice, Suppasit Chuwatsawat, Wiputpong Klinsukon, Somchai Baotong, Visit Thaveeprungsriporn
  • Device pairing system and method, and device communication control system and method
    Patent number: 11716774
    Abstract: In a described embodiment, a device pairing method is disclosed. The device pairing method comprises: generating, using a server (130), a user pairing identifier corresponding to a user profile; sending, using the server (130), the generated user pairing identifier for use by a first user device (110) of the user profile to pair a second user device (120) with the user profile. In another described embodiment, a device communication control method is disclosed. The method comprises: sending, using a challenging computing device (120) to a responding computing device (110), a random number and an associated key identifier; controlling communication based on a result of comparison of the response and verification HMAC values computed with the random number and one of a plurality of cryptographic keys identified by the key identifier.
    Type: Grant
    Filed: February 28, 2019
    Date of Patent: August 1, 2023
    Inventors: Karn Pupakdee, Adisak Srisuriyasavad, Jugkree Na Ayutthaya Plalakawong, Suwan Boonprem, Suppasit Chuwatsawat, Shoko Trepetch, Austin Phillips
  • Device Pairing System And Method, And Device Communication Control System And Method
    Publication number: 20210045169
    Abstract: In a described embodiment, a device pairing method is disclosed. The device pairing method comprises: generating, using a server (130), a user pairing identifier corresponding to a user profile; sending, using the server (130), the generated user pairing identifier for use by a first user device (110) of the user profile to pair a second user device (120) with the user profile. In another described embodiment, a device communication control method is disclosed. The method comprises: sending, using a challenging computing device (120) to a responding computing device (110), a random number and an associated key identifier; controlling communication based on a result of comparison of the response and verification HMAC values computed with the random number and one of a plurality of cryptographic keys identified by the key identifier.
    Type: Application
    Filed: February 28, 2019
    Publication date: February 11, 2021
    Applicant: Nitto Denko Corporation
    Inventors: Karn Pupakdee, Adisak Srisuriyasavad, Jugkree Na Ayutthaya Plalakawong, Suwan Boonprem, Suppasit Chuwatsawat, Shoko Trepetch, Austin Phillips
  • Photoplethysmography (PPG) Apparatus And Method For Determining Physiological Changes
    Publication number: 20200329986
    Abstract: Disclosed is a photoplethysmography (PPG) apparatus (100) for determining physiological changes, comprising: a light source to emit alight signal having a variable intensity dependent on a skin characteristic; first and second photodetectors (130) operable to detect a reflection of the light signal to provide a combined current signal; and a signal processing circuit operable to convert the current signal into a PPG signal for determining the physiological changes.
    Type: Application
    Filed: July 26, 2018
    Publication date: October 22, 2020
    Applicant: Nitto Denko Corporation
    Inventors: Estanislao Glenn Bondice, Suppasit Chuwatsawat, Wiputpong Klinsukon, Somchai Baotong, Visit Thaveeprungsriporn