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).

  • Publication number: 20190251568
    Abstract: A contactless card reader comprises a contactless card reader front-end coupled to a processor. A communications module is coupled to the processor and a set of sensors is coupled to the processor. The set of sensors determines parameters related to the location, orientation and motion of the card reader. The processor receives the parameters from the set of sensors and utilizes the parameters and scenario configuration data to evaluate a rule. The result of the evaluation of the rule results in a limitation on the operation of the card reader. The communications module is configured to intermittently receive the scenario configuration data from external sources.
    Type: Application
    Filed: April 25, 2019
    Publication date: August 15, 2019
    Inventors: HWAI SIAN TSAI, CHI WAH LO
  • Publication number: 20190190262
    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: February 25, 2019
    Publication date: June 20, 2019
    Inventors: WING CHEONG CHAN, HWAI SIAN TSAI, CHI WAH LO
  • Patent number: 10318959
    Abstract: A contactless card reader comprises a contactless card reader front-end coupled to a processor. A communications module is coupled to the processor and a set of sensors is coupled to the processor. The set of sensors determines parameters related to the location, orientation and motion of the card reader. The processor receives the parameters from the set of sensors and utilizes the parameters and scenario configuration data to evaluate a rule. The result of the evaluation of the rule results in a limitation on the operation of the card reader. The communications module is configured to intermittently receive the scenario configuration data from external sources.
    Type: Grant
    Filed: July 26, 2018
    Date of Patent: June 11, 2019
    Assignee: BBPOS Limited
    Inventors: Hwai Sian Tsai, Chi Wah Lo
  • Publication number: 20190121538
    Abstract: What is disclosed is a system for randomization of one or more display parameters for a keypad displayed on a touchscreen of a mobile device, said system comprising a randomization subsystem to randomly select one or more variables related to at least one of said one or more display parameters, said one or more display parameters comprising a location of the keypad relative to said edge of said touchscreen; a size of said keypad; one or more sizes of one or more buttons within said keypad, and one or more positions of one or more groups of the one or more buttons within said keypad.
    Type: Application
    Filed: October 22, 2018
    Publication date: April 25, 2019
    Inventors: HWAI SIAN TSAI, CHI WAH LO
  • Patent number: 10256627
    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: October 5, 2017
    Date of Patent: April 9, 2019
    Assignee: BBPOS Limited
    Inventors: Wing Cheong Chan, Hwai Sian Tsai, Chi Wah Lo
  • Publication number: 20190034900
    Abstract: A point-of-sale device comprises a card reading interface module configured to read card information from a payment card and a card holder authentication module, coupled to the card reading interface module. The card holder authentication module receives the card information from the card reading interface module and authenticates a financial transaction. The card reading interface module is certified against a card holder authentication security standard and the card holder authentication module is certified against a card reading security standard.
    Type: Application
    Filed: July 26, 2018
    Publication date: January 31, 2019
    Inventors: CHI WAH LO, HWAI SIAN TSAI
  • Publication number: 20180336560
    Abstract: A contactless card reader comprises a contactless card reader front-end coupled to a processor. A communications module is coupled to the processor and a set of sensors is coupled to the processor. The set of sensors determines parameters related to the location, orientation and motion of the card reader. The processor receives the parameters from the set of sensors and utilizes the parameters and scenario configuration data to evaluate a rule. The result of the evaluation of the rule results in a limitation on the operation of the card reader. The communications module is configured to intermittently receive the scenario configuration data from external sources.
    Type: Application
    Filed: July 26, 2018
    Publication date: November 22, 2018
    Inventors: Hwai Sian Tsai, Chi Wah Lo
  • Patent number: 10055738
    Abstract: A contactless card reader comprises a contactless card reader front-end coupled to a processor. A communications module is coupled to the processor and a set of sensors is coupled to the processor. The set of sensors determines parameters related to the location, orientation and motion of the card reader. The processor receives the parameters from the set of sensors and utilizes the parameters and scenario configuration data to evaluate a rule. The result of the evaluation of the rule results in a limitation on the operation of the card reader. The communications module is configured to intermittently receive the scenario configuration data from external sources.
    Type: Grant
    Filed: November 4, 2016
    Date of Patent: August 21, 2018
    Assignee: BBPOS Limited
    Inventors: Hwai Sian Tsai, Chi Wah Lo
  • Publication number: 20180197180
    Abstract: A system for accepting the input of a PIN comprises a first device receiving a randomized PIN layout derived on a fourth device. The randomized PIN layout is displayed on a display of the first device. A second device comprises an input for accepting a series of key presses to produce a PIN token. The PIN token indicating each of the series of key presses. A third device is in communication with the second device. The third device derives the randomized PIN layout and receives the PIN token from the second device without the PIN token being present on the first device. The third device combines the PIN layout and the PIN token to produce a PIN. The PIN is used to authenticate a transaction. The fourth and third devices each store a shared secret used to independently derive the randomized PIN layout on the fourth and third devices.
    Type: Application
    Filed: January 12, 2017
    Publication date: July 12, 2018
    Inventors: HWAI SIAN TSAI, NAMSON KWOK
  • Publication number: 20180130059
    Abstract: A contactless card reader comprises a contactless card reader front-end coupled to a processor. A communications module is coupled to the processor and a set of sensors is coupled to the processor. The set of sensors determines parameters related to the location, orientation and motion of the card reader. The processor receives the parameters from the set of sensors and utilizes the parameters and scenario configuration data to evaluate a rule. The result of the evaluation of the rule results in a limitation on the operation of the card reader. The communications module is configured to intermittently receive the scenario configuration data from external sources.
    Type: Application
    Filed: November 4, 2016
    Publication date: May 10, 2018
    Inventor: HWAI SIAN TSAI
  • Publication number: 20180048147
    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: October 5, 2017
    Publication date: February 15, 2018
    Inventors: WING CHEONG CHAN, HWAI SIAN TSAI, CHI WAH LO
  • Patent number: 9793712
    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: September 19, 2014
    Date of Patent: October 17, 2017
    Assignee: BBPOS LIMITED
    Inventors: Wing Cheong Chan, Hwai Sian Tsai, Chi Wah Lo
  • Patent number: 9633234
    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 16, 2016
    Date of Patent: April 25, 2017
    Assignee: BBPOS Limited
    Inventors: Chi Wah Lo, Hwai Sian Tsai
  • Patent number: 9613234
    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: Grant
    Filed: July 10, 2013
    Date of Patent: April 4, 2017
    Assignee: BBPOS Limited
    Inventors: Chi Wah Lo, Hwai Sian Tsai, Kin Wai Chan
  • 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: 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
  • 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
  • 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