Patents by Inventor Chi Wah Lo

Chi Wah Lo 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: 20240028672
    Abstract: Methods and systems for installing and running an application for a terminal are described. The method may include uploading an application to an application store. The method may also include downloading, by a terminal, the application from the application store, wherein the terminal is connected to the application store by a network. Furthermore, the method may include authorizing, by a terminal management server (TMS) coupled to the terminal and the application store via the network, the terminal to install and run the downloaded application.
    Type: Application
    Filed: September 29, 2023
    Publication date: January 25, 2024
    Inventors: Hwai Sian Tsai, Chi Wah Lo
  • Patent number: 11809528
    Abstract: Installing and running an application for a terminal are described. A method for installing and running the application includes uploading an application to an application store. The method further includes downloading, by a terminal, the application from the application store, wherein the terminal is connected to the application store by a network. Furthermore, the method includes authorizing, by a terminal management server (TMS) coupled to the terminal and the application store via the network, the terminal to install and run the downloaded application.
    Type: Grant
    Filed: May 9, 2019
    Date of Patent: November 7, 2023
    Assignee: STRIPE, INC.
    Inventors: Hwai Sian Tsai, Chi Wah Lo
  • Publication number: 20230351385
    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: July 7, 2023
    Publication date: November 2, 2023
    Inventors: Chi Wah Lo, Hwai Sian Tsai, Namson Kwok
  • Patent number: 11804711
    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: January 4, 2022
    Date of Patent: October 31, 2023
    Assignee: STRIPE, INC.
    Inventors: Wing Cheong Chan, Hwai Sian Tsai, Chi Wah Lo
  • Publication number: 20230297789
    Abstract: A reader device for attachment to a smart device comprising a display, the reader comprising an antenna, processing and reading circuitry, and a communications module, wherein the antenna, the processing and reading circuitry, the processor and the communications module are coupled to each other, and whereby the antenna encloses said display. When a card is tapped on the display, the antenna receives a signal and transmits the signal to the processing and reading circuitry. The processing and reading circuitry processes the signal to produce data, and the produced data is transmitted to a device external to the reader device by the communications module.
    Type: Application
    Filed: May 26, 2023
    Publication date: September 21, 2023
    Inventors: Hwai Sian TSAI, Chi Wah LO
  • Patent number: 11756033
    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: Grant
    Filed: March 7, 2022
    Date of Patent: September 12, 2023
    Assignee: STRIPE, INC.
    Inventors: Chi Wah Lo, Hwai Sian Tsai, Namson Kwok
  • Publication number: 20230274284
    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: May 4, 2023
    Publication date: August 31, 2023
    Inventors: Hwai Sian Tsai, Chi Wah Lo
  • Patent number: 11714974
    Abstract: A reader device for attachment to a smart device comprising a display, the reader comprising an antenna, processing and reading circuitry, and a communications module, wherein the antenna, the processing and reading circuitry, the processor and the communications module are coupled to each other, and whereby the antenna encloses said display. When a card is tapped on the display, the antenna receives a signal and transmits the signal to the processing and reading circuitry. The processing and reading circuitry processes the signal to produce data, and the produced data is transmitted to a device external to the reader device by the communications module.
    Type: Grant
    Filed: February 3, 2022
    Date of Patent: August 1, 2023
    Inventors: Hwai Sian Tsai, Chi Wah Lo
  • Patent number: 11710134
    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: April 26, 2022
    Date of Patent: July 25, 2023
    Assignee: Stripe, Inc.
    Inventors: Hwai Sian Tsai, Chi Wah Lo
  • Patent number: 11663584
    Abstract: A system to indicate to a user to enter a personal identification number (PIN) on a commercial off the shelf (COTS) device, the system comprising: a secure card reader communicatively coupled to the COTS device, and wherein the secure card reader receives a payment card; a payment application installed on the COTS device; and one or more devices other than the COTS device. The payment application installed on the COTS device transmits one or more prompts to the one or more devices other than the COTS device based on a set of signals received from the secure card reader. The secure card reader transmits the set of signals after the payment card is received at the secure card reader, and the one or more prompts comprise at least one indication to the user to enter the PIN on a display of the COTS device.
    Type: Grant
    Filed: July 7, 2021
    Date of Patent: May 30, 2023
    Assignee: STRIPE, INC.
    Inventors: Hwai Sian Tsai, Chi Wah Lo
  • Publication number: 20230140038
    Abstract: A card detection subsystem for control of a payment card reader, where the payment card reader comprises a magnetic stripe reader (MSR), an integrated circuit card (ICC) reader, and a near field communications (NFC) reader, and the NFC reader comprises an antenna. The card detection subsystem includes a processor, a storage, and one or more sensors. The one or more sensors detect a payment card and the antenna is either turned on or turned off based on the detection of the payment card.
    Type: Application
    Filed: October 27, 2022
    Publication date: May 4, 2023
    Inventors: Hwai Sian Tsai, Wayne Gan, Chi Wah Lo
  • Patent number: 11640593
    Abstract: A system comprises a client module installed on a vending machine, the vending machine displaying one or more items for purchase in a first arrangement, and a purchase fulfilment subsystem. A QR code is generated by the purchase fulfilment subsystem and transmitted to the client module. A first set of signals to initiate a transaction is transmitted by the user device to the purchase fulfilment system. The purchase fulfilment subsystem transmits to the user device a second set of signals to display elements in a second arrangement. The user device transmits a third set of signals to the purchase fulfilment subsystem related to activation of an element. The purchase fulfilment subsystem transmits to the client module a fourth set of signals comprising commands to enable the vending machine to dispense an item. The client module sends one or more instructions to the vending machine to dispense the item.
    Type: Grant
    Filed: May 14, 2021
    Date of Patent: May 2, 2023
    Assignee: STRIPE, INC.
    Inventors: Chi Wah Lo, Tai Kwan Jimmy Tang, Wai Chuen Gan
  • Patent number: 11630575
    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: Grant
    Filed: February 17, 2021
    Date of Patent: April 18, 2023
    Assignee: STRIPE, INC.
    Inventors: Hwai Sian Tsai, Chi Wah Lo
  • Patent number: 11595799
    Abstract: A mobile device includes a Bluetooth transceiver, the Bluetooth transceiver being in an idle power state when not securely paired to a second Bluetooth transceiver of a peripheral device. The mobile device further includes an audio interface, the audio interface coupled to the Bluetooth transceiver, the audio interface configured to connect to a second audio interface of the peripheral device.
    Type: Grant
    Filed: November 5, 2020
    Date of Patent: February 28, 2023
    Assignee: STRIPE, INC.
    Inventor: Chi Wah Lo
  • Patent number: 11580208
    Abstract: A system for entering a secure Personal Identification Number (PIN) into a mobile computing device includes a mobile computing device and a peripheral device that are connected via a data communication link. The mobile computing device includes a mobile application and a display and the mobile application runs on the mobile computing device and displays a grid on the mobile computing device display. The peripheral device includes a display and an encryption engine, and the peripheral device display displays a grid corresponding to the grid displayed on the mobile computing device display. Positional inputs on the mobile computing device grid are sent to the peripheral device and the peripheral device decodes the positional inputs into PIN digits and generates an encrypted PIN and then sends the encrypted PIN back to the mobile computing device.
    Type: Grant
    Filed: December 7, 2020
    Date of Patent: February 14, 2023
    Assignee: STRIPE, INC.
    Inventor: Chi Wah Lo
  • Publication number: 20220391903
    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 26, 2022
    Publication date: December 8, 2022
    Applicant: BBPOS Limited
    Inventors: Hwai Sian Tsai, Chi Wah Lo
  • Publication number: 20220300945
    Abstract: An apparatus for effecting a commercial transaction with a remote transaction server using a payment device via a communication device is provided. The apparatus includes a transaction device coupled with the communication device for capturing information stored on said payment device and a controller for converting the captured information into encrypted information and for transmitting the encrypted information to the communication device. The communication device delivers the encrypted information to the remote transaction server for processing the commercial transaction.
    Type: Application
    Filed: June 3, 2022
    Publication date: September 22, 2022
    Inventors: Tai Kwan Jimmy Tang, Chi Wah Lo, Kenneth G. Mages
  • Publication number: 20220253614
    Abstract: A reader device for attachment to a smart device comprising a display, the reader comprising an antenna, processing and reading circuitry, and a communications module, wherein the antenna, the processing and reading circuitry, the processor and the communications module are coupled to each other, and whereby the antenna encloses said display. When a card is tapped on the display, the antenna receives a signal and transmits the signal to the processing and reading circuitry. The processing and reading circuitry processes the signal to produce data, and the produced data is transmitted to a device external to the reader device by the communications module.
    Type: Application
    Filed: February 3, 2022
    Publication date: August 11, 2022
    Inventors: Hwai Sian TSAI, Chi Wah LO
  • Patent number: RE49614
    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: August 11, 2021
    Date of Patent: August 15, 2023
    Assignee: Stripe, Inc.
    Inventors: Chi Wah Lo, Hwai Sian Tsai
  • Patent number: RE49888
    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: April 4, 2019
    Date of Patent: March 26, 2024
    Assignee: STRIPE, INC.
    Inventors: Chi Wah Lo, Hwai Sian Tsai, Kin Wai Chan