Patents by Inventor Hwai Sian Tsai

Hwai Sian Tsai 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: 9489548
    Abstract: A magnetic card reader module includes a magnetic sensor and an adjacent groove, a micro controller and an application. The magnetic sensor is configured to pick-up an analog magnetic signal generated by swiping a magnetic stripe through the groove. The magnetic stripe is attached to a card and comprises tracks with magnetically encoded data. The microcontroller is configured to convert the analog magnetic signal into a digital signal. The application is configured to analyze the digital signal, and to perform soft-decision decode of the digital signal and to generate an output comprising the magnetically encoded data and side information providing card swipe information feedback.
    Type: Grant
    Filed: August 12, 2015
    Date of Patent: November 8, 2016
    Assignee: BBPOS LIMITED
    Inventors: Chi Wah Lo, Hwai Sian Tsai
  • Publication number: 20160247001
    Abstract: A system for a secure display module includes a display element array, a driver controller, a communication interface, a host controller and a cryptographic engine. The display element array includes one or more segments, and the driver outputs are configured to drive the one or more segments, respectively. The host controller is configured to send commands and data to the driver controller via the communication interface and the cryptographic engine is configured to encrypt communication data between the display element array and the host controller.
    Type: Application
    Filed: February 16, 2016
    Publication date: August 25, 2016
    Inventors: CHI WAH LO, HWAI SIAN TSAI
  • Patent number: 9362689
    Abstract: A circuit for detecting the position of the signal MIC-IN and GND on the audio plug of a mobile phone includes two comparators and two switches. The comparators compare the voltage difference between the two contact points representing MIC-IN and GND of the audio plug of a mobile phone, and through this comparison the ground signal of the mobile phone is identified. The circuit then connects the ground of the accessory and the mobile phone properly, by activating the appropriate switch.
    Type: Grant
    Filed: July 10, 2013
    Date of Patent: June 7, 2016
    Assignee: BBPOS LIMITED
    Inventors: Chi Wah Lo, Hwai Sian Tsai, Ka Leong Tony Tsang
  • Patent number: 9363620
    Abstract: The system comprises a master controller and an audio plug connected to the master controller. The audio plug includes at least four contacts electrically connected to corresponding poles of an audio frequency interface. Electrical coupling devices are disposed on circuits which respectively connect a first contact and a second contact with the master controller. The circuits between each electrical coupling devices and the correspondent contact are short circuits.
    Type: Grant
    Filed: March 18, 2013
    Date of Patent: June 7, 2016
    Assignee: BBPOS LIMITED
    Inventor: Hwai Sian Tsai
  • Publication number: 20160142107
    Abstract: A system for an antenna for near field communications (NFC), said antenna comprising a primary loop with a primary current to produce a magnetic field; one or more secondary loops with one or more secondary currents; wherein by adjusting one or more variables associated with said one or more secondary loops, said magnetic field is modified to ensure antenna operation within a defined operating range.
    Type: Application
    Filed: November 13, 2014
    Publication date: May 19, 2016
    Inventors: HWAI SIAN TSAI, PETER CHOI
  • Patent number: 9264228
    Abstract: A system for a secure display module includes a display element array, a driver controller, a communication interface, a host controller and a cryptographic engine. The display element array includes one or more segments, and the driver outputs are configured to drive the one or more segments, respectively. The host controller is configured to send commands and data to the driver controller via the communication interface and the cryptographic engine is configured to encrypt communication data between the display element array and the host controller.
    Type: Grant
    Filed: February 11, 2014
    Date of Patent: February 16, 2016
    Assignee: BBPOS Limited
    Inventors: Chi Wah Lo, Hwai Sian Tsai
  • Publication number: 20150347790
    Abstract: A magnetic card reader module includes a magnetic sensor and an adjacent groove, a micro controller and an application. The magnetic sensor is configured to pick-up an analog magnetic signal generated by swiping a magnetic stripe through the groove. The magnetic stripe is attached to a card and comprises tracks with magnetically encoded data. The microcontroller is configured to convert the analog magnetic signal into a digital signal. The application is configured to analyze the digital signal, and to perform soft-decision decode of the digital signal and to generate an output comprising the magnetically encoded data and side information providing card swipe information feedback.
    Type: Application
    Filed: August 12, 2015
    Publication date: December 3, 2015
    Inventors: CHI WAH LO, HWAI SIAN TSAI
  • Patent number: 9129166
    Abstract: A magnetic card reader module includes a magnetic sensor and an adjacent groove, a microcontroller and an application. The magnetic sensor is configured to pick-up an analog magnetic signal generated by swiping a magnetic stripe through the groove. The magnetic stripe is attached to a card and comprises tracks with magnetically encoded data. The microcontroller is configured to convert the analog magnetic signal into a digital signal. The application is configured to analyze the digital signal, and to perform soft-decision decode of the digital signal and to generate an output comprising the magnetically encoded data and side information providing card swipe information feedback.
    Type: Grant
    Filed: January 28, 2014
    Date of Patent: September 8, 2015
    Assignee: BBPOS Limited
    Inventors: Chi Wah Lo, Hwai Sian Tsai
  • Publication number: 20150001946
    Abstract: A power management circuitry for a peripheral electronic device includes a power regeneration circuitry, a power selector, a power switch and an audio signal detection circuitry. The power regeneration circuitry receives a continuous periodic sound wave from an audio device and converts the continuous periodic sound wave into an amplified DC electrical signal. The power source selector receives the amplified DC electrical signal and input from a primary power source and provides a power signal output. The audio signal detection circuitry receives the amplified DC electrical signal and transmits a wake-up signal to the power switch circuitry. The power switch circuitry is turned on by the wake-up signal and connects the power source selector to the peripheral electronic device main circuitry and transfers the power signal output to the peripheral electronic device main circuitry.
    Type: Application
    Filed: September 19, 2014
    Publication date: January 1, 2015
    Inventors: WING CHEONG CHAN, HWAI SIAN TSAI, CHI WAH LO
  • Patent number: 8840017
    Abstract: A power management circuitry for a peripheral electronic device includes a power regeneration circuitry, a power selector, a power switch and an audio signal detection circuitry. The power regeneration circuitry receives a continuous periodic sound wave from an audio device and converts the continuous periodic sound wave into an amplified DC electrical signal. The power source selector receives the amplified DC electrical signal and input from a primary power source and provides a power signal output. The audio signal detection circuitry receives the amplified DC electrical signal and transmits a wake-up signal to the power switch circuitry. The power switch circuitry is turned on by the wake-up signal and connects the power source selector to the peripheral electronic device main circuitry and transfers the power signal output to the peripheral electronic device main circuitry.
    Type: Grant
    Filed: July 31, 2012
    Date of Patent: September 23, 2014
    Assignee: BBPOS Limited
    Inventors: Wing Cheong Chan, Hwai Sian Tsai, Chi Wah Lo
  • Publication number: 20140274210
    Abstract: What is disclosed is an apparatus for a dual Subscriber Identity Module (SIM) card adapter, comprising: a first storage space for a SIM card tray ejection pin configured to eject a SIM card from the mobile device; a second storage space for a SIM card tray for a mobile device; a connector operational to be entered into a SIM card slot for the mobile device, said connector comprising an input and an output; a switch comprising an input and at least two outputs, said switch operational to couple the switch input to a selected one of the at least two switch outputs; and at least two integrated SIM card holders.
    Type: Application
    Filed: March 14, 2014
    Publication date: September 18, 2014
    Applicant: Eternal Electronics Limited
    Inventors: Hwai Sian Tsai, Suk Kuen Wong
  • Publication number: 20140226815
    Abstract: A system for a secure display module includes a display element array, a driver controller, a communication interface, a host controller and a cryptographic engine. The display element array includes one or more segments, and the driver outputs are configured to drive the one or more segments, respectively. The host controller is configured to send commands and data to the driver controller via the communication interface and the cryptographic engine is configured to encrypt communication data between the display element array and the host controller.
    Type: Application
    Filed: February 11, 2014
    Publication date: August 14, 2014
    Applicant: BBPOS LIMITED
    Inventors: Chi Wah Lo, Hwai Sian Tsai
  • Publication number: 20140217174
    Abstract: A magnetic card reader module includes a magnetic sensor and an adjacent groove, a microcontroller and an application. The magnetic sensor is configured to pick-up an analog magnetic signal generated by swiping a magnetic stripe through the groove. The magnetic stripe is attached to a card and comprises tracks with magnetically encoded data. The microcontroller is configured to convert the analog magnetic signal into a digital signal. The application is configured to analyze the digital signal, and to perform soft-decision decode of the digital signal and to generate an output comprising the magnetically encoded data and side information providing card swipe information feedback.
    Type: Application
    Filed: January 28, 2014
    Publication date: August 7, 2014
    Applicant: BBPOS LIMITED
    Inventors: Chi Wah Lo, Hwai Sian Tsai
  • Publication number: 20140069261
    Abstract: A karaoke system for establishing a karaoke session includes a karaoke hub coupled to a display and a plurality of mobile devices wirelessly coupled to the karaoke hub. Each one of the plurality of mobile devices includes a corresponding output audio stream associated therewith. The karaoke hub is configured to receive and combine into a single output audio signal the corresponding output audio streams associated with each one of the plurality of mobile devices. The karaoke hub is further configured to transmit the single output audio signal to a display coupled to the karaoke hub.
    Type: Application
    Filed: September 7, 2012
    Publication date: March 13, 2014
    Applicant: Eternal Electronics Limited
    Inventors: Hwai Sian Tsai, Suk Kuen Wong
  • Publication number: 20140021255
    Abstract: A magnetic reader head assembly includes a magnetic reader head compartment, a frame and an elastic component. The magnetic reader head compartment comprises electronic and mechanical components of the magnetic reader head. The frame has a front side and a back side and has a footprint matching the footprint of the magnetic reader head compartment. The front side is configured to attach to a back wall of the magnetic reader head compartment while allowing the magnetic reader head compartment to move out or retract from the frame. The elastic component is configured to be placed at the back side of the frame and to push the frame out in order to press the magnetic reader head compartment against a magnetic card stripe.
    Type: Application
    Filed: July 10, 2013
    Publication date: January 23, 2014
    Applicant: BBPOS LIMITED
    Inventors: Chi Wah Lo, Hwai Sian Tsai, KIN WAI CHAN
  • Publication number: 20140016782
    Abstract: The system comprises a master controller and an audio plug connected to the master controller. The audio plug includes at least four contacts electrically connected to corresponding poles of an audio frequency interface. Electrical coupling devices are disposed on circuits which respectively connect a first contact and a second contact with the master controller. The circuits between each electrical coupling devices and the correspondent contact are short circuits.
    Type: Application
    Filed: March 18, 2013
    Publication date: January 16, 2014
    Applicant: BBPOS LIMITED
    Inventor: Hwai Sian TSAI
  • Publication number: 20140017955
    Abstract: A circuit for detecting the position of the signal MIC-IN and GND on the audio plug of a mobile phone includes two comparators and two switches. The comparators compare the voltage difference between the two contact points representing MIC-IN and GND of the audio plug of a mobile phone, and through this comparison the ground signal of the mobile phone is identified. The circuit then connects the ground of the accessory and the mobile phone properly, by activating the appropriate switch.
    Type: Application
    Filed: July 10, 2013
    Publication date: January 16, 2014
    Applicant: BBPOS LIMITED
    Inventors: Chi Wah Lo, Hwai Sian Tsai, Ka Leong Tony Tsang
  • Publication number: 20130131541
    Abstract: A system for predicting ovulation cycles by employing an application running on a mobile communication device such as an iPhone®, a Blackberry™, or an Android-based smartphone is provided. The system includes a basal body temperature thermometer coupled to a mobile communication device. The thermometer takes temperature measurements, encodes the temperature measurements and transmits the encoded temperature measurements to the mobile communication device. The mobile communication device receives and decodes the encoded temperature measurements. The mobile communication device includes an application that analyzes the decoded temperature measurements to determine whether they are satisfactory or unsatisfactory, provides feedback to a user in real-time and provides an ovulation prediction.
    Type: Application
    Filed: November 23, 2011
    Publication date: May 23, 2013
    Applicant: Eternal Electronics Limited
    Inventors: Hwai Sian Tsai, Suk Kuen Wong
  • Patent number: 8336771
    Abstract: A dangle, which plugs into the audio/earpiece jack of host devices, allows them to accept payment cards as a point of sale (POS) terminal. It contains a magnetic stripe (magstripe) card reader, a smart card reader, and/or a proximity card reader (reader(s)); a microprocessor or microcontroller (CPU); and a circuit for drawing power from a digital audio signal (power circuit). Payment card data is collected by the reader(s), passed to the CPU where it is encrypted, encoded, and modulated, sent to the host device through the Microphone input contact of the audio/earpiece jack, then transmitted via one the host device's networks to a merchant account provider for processing. A digital audio signal, constantly generated by the host device, provides power to the dongle via the power circuit. The power circuit converts the digital audio signal to stable DC power with the appropriate voltage for powering the dongle's other components.
    Type: Grant
    Filed: April 27, 2010
    Date of Patent: December 25, 2012
    Assignee: BBPOS Limited
    Inventors: Hwai Sian Tsai, Wing Cheong Chan
  • Patent number: D713396
    Type: Grant
    Filed: February 8, 2013
    Date of Patent: September 16, 2014
    Assignee: Eternal Electronics Limited
    Inventors: Hwai Sian Tsai, Suk Kuen Wong