Patents by Inventor Kuo-Kai Shyu

Kuo-Kai Shyu 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: 10004861
    Abstract: An alarming method for a ventilator and a ventilator alarm system are provided. The method includes the following. First, a plurality of ventilation parameters are received and detected. If a peak airway pressure of the ventilation parameters conforms to a first condition, whether a plateau pressure conforms to a second condition is determined, wherein the first condition is Y(k+1), Ppeak>Yk, mean,Ppeak+3*Yk,sd,Ppeak, and the second condition is Y(k+1), Pplateau<Yk, mean, Pplateau+3*Yk, sd, Pplateau. If the plateau pressure does not conform to the second condition, an airway static obstruction alarm is activated. If the plateau pressure conforms to the second condition and a third condition, an airway dynamic obstruction alarm is activated.
    Type: Grant
    Filed: April 29, 2015
    Date of Patent: June 26, 2018
    Assignees: Landseed Hospital, National Central University
    Inventors: Chin-Pyng Wu, Shih-Hsing Yang, Kuo-Kai Shyu, Chung-Chih Huang, Chun-Ming Peng, Yuh-Chin Huang
  • Publication number: 20170209054
    Abstract: A feedback photoplethysmography measuring device is provided, including: a measuring device that measures a human body to obtain a photoplethysmography signal; an analog/digital conversion unit that converts the photoplethysmography signal measured by the measuring device to a photoplethysmography value which is a digital value; a variation-degree calculation unit that calculates a photoplethysmography variation value according to the photoplethysmography value converted by the analog/digital conversion unit; and a feedback emitted light amplitude adjustment unit that controls the measuring device according to a plurality of preset control values or the adjusted photoplethysmography variation value calculated by the variation-degree calculation unit, and adjusts the photoplethysmography variation value to a minimum variation value.
    Type: Application
    Filed: June 13, 2016
    Publication date: July 27, 2017
    Inventors: Po-Lei Lee, Kuo-Kai Shyu, Men-Tzung Lo, Hao-Teng Shu, Te-Min Lee
  • Publication number: 20160353998
    Abstract: An apparatus and a method for noninvasive and caffless blood pressure measurement are provided. The apparatus includes: a photoplethysmography (PPG) amplitude calculation unit, a time difference calculation unit, a velocity calculation unit, and a calculation unit. The method includes the following steps: calculating amplitude differences between characteristic points of a PPG waveform; calculating differences between a time point of a peak of an electrocardiography (ECG) waveform and a time point of each of the characteristic points of the PPG waveform; calculating differences between time points of the characteristic points of the PPG waveform; performing calculation according to the length of a hand and an ECG-PPG time difference to obtain a pulse wave velocity (PWV); and performing calculation according to the PWV, one of the characteristic point amplitude difference, and one of the characteristic point time difference to obtain a systolic/diastolic blood pressure estimate.
    Type: Application
    Filed: May 26, 2016
    Publication date: December 8, 2016
    Inventors: Po-Lei Lee, Kuo-Kai Shyu, Hao-Teng Shu, Te-Min Lee
  • Publication number: 20150314090
    Abstract: An alarming method for a ventilator and a ventilator alarm system are provided. The method includes the following. First, a plurality of ventilation parameters are received and detected. If a peak airway pressure of the ventilation parameters conforms to a first condition, whether a plateau pressure conforms to a second condition is determined, wherein the first condition is Y(k+1), Ppeak>Yk, mean,Ppeak+3*Yk,sd,Ppeak, and the second condition is Y(k+1), Pplateau<Yk, mean, Pplateau+3*Yk, sd, Pplateau. If the plateau pressure does not conform to the second condition, an airway static obstruction alarm is activated. If the plateau pressure conforms to the second condition and a third condition, an airway dynamic obstruction alarm is activated.
    Type: Application
    Filed: April 29, 2015
    Publication date: November 5, 2015
    Inventors: Chin-Pyng Wu, Shih-Hsing Yang, Kuo-Kai Shyu, Chung-Chih Huang, Chun-Ming Peng, Yuh-Chin Huang
  • Patent number: 8825564
    Abstract: A visual drive control method with multi-phase encoding includes the following steps. A plurality of flickering sequences are generated by an encoding process according to a reference phase and a plurality of shifting phases divided in time division under at least one phase shift state, then a display unit is driven to display corresponding optical images. An optic nerve of an organism is evoked by the optical images, such that the organism generates a corresponding biological signal. Next, a computation process is performed to a digital biological signal converted from the biological signal to acquire an average captured reference phase and an average captured shifting phase of the digital biological signal. Then, the frequencies and the phase states of the digital biological signal and the flickering sequences are compared to output a corresponding control signal. A visual drive control apparatus with multi-phase encoding is disclosed herein.
    Type: Grant
    Filed: August 23, 2011
    Date of Patent: September 2, 2014
    Assignee: National Central University
    Inventors: Po-Lei Lee, Kuo-Kai Shyu
  • Patent number: 8648800
    Abstract: A control method of a brain computer interface (BCI) with a stepping delay flickering sequence is provided. First, a plurality of different flickering sequence signals are generated by encoding a static flashing segment and a plurality of stepping delay flashing segments divided in different time sequences. Then, a plurality of target images corresponding to the flickering sequence signals are displayed. Thereafter, a response signal generated by an organism evoked by the target images is acquired. Then, signal processing is performed on the response signal by using a mathematic method to distinguish which one of the target images is gazed by the organism. Thereafter, a controlling command corresponding to one of the target images is generated. A control system of a BCI with a stepping delay flickering sequence is also provided herein.
    Type: Grant
    Filed: January 24, 2012
    Date of Patent: February 11, 2014
    Assignee: National Central University
    Inventors: Po-Lei Lee, Kuo-Kai Shyu, Hsiang-Chih Chang
  • Publication number: 20130100010
    Abstract: A control method of a brain computer interface (BCI) with a stepping delay flickering sequence is provided. First, a plurality of different flickering sequence signals are generated by encoding a static flashing segment and a plurality of stepping delay flashing segments divided in different time sequences. Then, a plurality of target images corresponding to the flickering sequence signals are displayed. Thereafter, a response signal generated by an organism evoked by the target images is acquired. Then, signal processing is performed on the response signal by using a mathematic method to distinguish which one of the target images is gazed by the organism. Thereafter, a controlling command corresponding to one of the target images is generated. A control system of a BCI with a stepping delay flickering sequence is also provided herein.
    Type: Application
    Filed: January 24, 2012
    Publication date: April 25, 2013
    Applicant: NATIONAL CENTRAL UNIVERSITY
    Inventors: Po-Lei Lee, Kuo-Kai Shyu, Hsiang-Chih Chang
  • Publication number: 20120299822
    Abstract: A driving control system actuated by visual evoked brain waves which are induced by a multi-frequency and multi-phase encoder, the driving control system includes an optical flash generating device, a brain wave signal measurement device, a signal processing and analyzing device and a control device. The brain wave signal measurement device is configured for measuring a steady-state visual evoked response (SSVER) signal inducing by a user gazing the flash light source generated by the optical flash generating device. The signal processing and analyzing device is configured for calculating the frequency parameter and the phase parameter of the SSVER signal by a mathematical method, and analyzing whether those parameters are same as the optical flash generating device's parameters so as to generate a judgment result. The control device generates a control command according to the judgment result for controlling at least one of peripheral equipments.
    Type: Application
    Filed: July 30, 2012
    Publication date: November 29, 2012
    Inventors: Po-lei Lee, Kuo-kai Shyu, Chi-hsun Wu, Jyun-jie Sie, Ming-huan Lee
  • Publication number: 20120249614
    Abstract: A visual drive control method with multi-phase encoding includes the following steps. A plurality of flickering sequences are generated by an encoding process according to a reference phase and a plurality of shifting phases divided in time division under at least one phase shift state, then a display unit is driven to display corresponding optical images. An optic nerve of an organism is evoked by the optical images, such that the organism generates a corresponding biological signal. Next, a computation process is performed to a digital biological signal converted from the biological signal to acquire an average captured reference phase and an average captured shifting phase of the digital biological signal. Then, the frequencies and the phase states of the digital biological signal and the flickering sequences are compared to output a corresponding control signal. A visual drive control apparatus with multi-phase encoding is disclosed herein.
    Type: Application
    Filed: August 23, 2011
    Publication date: October 4, 2012
    Applicant: NATIONAL CENTRAL UNIVERSITY
    Inventors: Po-Lei LEE, Kuo-Kai SHYU
  • Publication number: 20090264787
    Abstract: In a driving control system actuated by visual evoked brain waves which are induced by a multi-frequency and multi-phase encoder, and a corresponding method configured for analyzing brain wave signals in order to control at least one peripheral equipment, the driving control system includes an optical flash generating device, a brain wave signal measurement device, a signal processing and analyzing device and a control device. The optical flash generating device is configured for generating at least one flash light source by a multi-frequency and multi-phase encoder. The brain wave signal measurement device is configured for measuring a brain wave signal inducing by a user gazing the flash light source. The signal processing and analyzing device is configured for calculating the frequency and the phase of the brain wave by a mathematical method, and analyzing whether the frequency and the phase of the brain wave same to the those of the optical flash generating device.
    Type: Application
    Filed: July 25, 2008
    Publication date: October 22, 2009
    Inventors: Po-lei Lee, Kuo-kai Shyu, Chi-hsun Wu, Jyun-jie Sie, Ming-huan Lee
  • Publication number: 20090264788
    Abstract: A nursing system of a visual evoked brain wave control device, measuring a brain wave signal induced by the user when gazing at one optical display region, for controlling external devices is designed. The optical flash generating device receives an outer signal to flash the optical display region therein. A brain wave signal measurement device is used to measure a brain wave signal induced by users when gazing at the optical display region. A programmable chip is used to analyze the relation between the brain wave signal and the optical flash generating device, and control a selected option of the optical display region gazed by the users (for example, raising/falling of first, second or third portion of the hospital bed, volume adjustment of radio, channel adjustment, etc.), for improving the independence capability and the life quality of the users.
    Type: Application
    Filed: July 25, 2008
    Publication date: October 22, 2009
    Inventors: Kuo-kai SHYU, Po-lei Lee, Ming-huan Lee, Chi-hsun Wu, Jyun-jle Sie
  • Patent number: 7541847
    Abstract: A power-diode driver uses a single power source to supply power to the sub-drivers inside. The sub-drivers are well isolated so that they can be safely and easily expanded by connecting to other device or driver. Thus, the power-diode driver has a changeable turn-on time and a highly modulated assembly. And, hence, the present invention is suitable for mass producing reliable power-diode drivers.
    Type: Grant
    Filed: March 28, 2007
    Date of Patent: June 2, 2009
    Assignee: National Central University
    Inventors: Kuo-Kai Shyu, Ko-Wen Jwo, Bo-Guang Zhu
  • Publication number: 20080231344
    Abstract: A power-diode-driver uses a single power source to supply power to the sub-drivers inside. The sub-drivers are well isolated so that they can be safely and easily expanded by connecting to other device or driver. Thus, the power-diode driver has a changeable turn-on time and a highly modulated assembly. And, hence, the present invention is suitable for mass producing reliable power-diode drivers.
    Type: Application
    Filed: March 28, 2007
    Publication date: September 25, 2008
    Applicant: National Central University
    Inventors: Kuo-Kai Shyu, Ko-Wen Jwo, Bo-Guang Zhu
  • Patent number: 7323964
    Abstract: A non-contact power system transfers power and signals simultaneously. The signals control the non-contact power system. And an operational frequency is operated on a resonant frequency so that there is no voltage alternating on power switch and power loss is reduced.
    Type: Grant
    Filed: December 1, 2006
    Date of Patent: January 29, 2008
    Assignee: National Central University
    Inventors: Kuo-Kai Shyu, Ko-Wen Jwo, Chih-Hung Lo