Patents by Inventor Liang Hsi Chang

Liang Hsi Chang 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: 8581750
    Abstract: A data input system is provided which comprises a processor, and a key array coupled to said processor, wherein said key array comprising at least one soft-key, at least one multi-directional pointing key for navigate a cursor and a conventional 3×4 telephone soft-key array for data selections; wherein said at least one soft-key includes a “backspace” key to delete a prior input data, a “space” key to add a space after said prior input data, or a “List/Fix” key to display a list of letter on a display for user to fix or list ambiguous letter/word presented by an input string.
    Type: Grant
    Filed: September 18, 2007
    Date of Patent: November 12, 2013
    Inventor: Liang-Hsi Chang
  • Publication number: 20130154928
    Abstract: A directional stroke input system has a display. A virtual key pad is displayed on the display, and the virtual keypad has an array of virtual keys. A cursor or a focus area placed on the virtual keypad at a selected key of the virtual keypad. A stroke recognition device includes a stroke sensing area. The stroke recognition device has eight straight directional strokes including: an up left stroke, an up stroke, an up right stroke, a left stroke, a right stroke, a down left stroke, a down stroke, and a down right stroke. The stroke recognition device has eight hook strokes including: an up left hook stroke, an up hook stroke, an up right hook stroke, a left hook stroke, a right hook stroke, a down left hook stroke, a down hook stroke, and a down right hook stroke.
    Type: Application
    Filed: February 18, 2013
    Publication date: June 20, 2013
    Inventor: LIANG HSI CHANG
  • Publication number: 20090073003
    Abstract: A data input system is provided which comprises a processor, and a key array coupled to said processor, wherein said key array comprising at least one soft-key, at least one multi-directional pointing key for navigate a cursor and a conventional 3×4 telephone soft-key array for data selections; wherein said at least one soft-key includes a “backspace” key to delete a prior input data, a “space” key to add a space after said prior input data, or a “List/Fix” key to display a list of letter on a display for user to fix or list ambiguous letter/word presented by an input string.
    Type: Application
    Filed: September 18, 2007
    Publication date: March 19, 2009
    Applicant: KeyTouch Inc.
    Inventor: Liang-Hsi Chang
  • Publication number: 20040179663
    Abstract: A mobile information gateway comprises a mobile communications device, preferably a phone, which includes a first communications link with a remote data source, typically the Internet, and a second communications link to a separated display, so that data output is conveniently presented for ready use.
    Type: Application
    Filed: January 20, 2004
    Publication date: September 16, 2004
    Applicant: Keytouch Corporation
    Inventor: Liang Hsi Chang
  • Patent number: 6775733
    Abstract: A USB host system includes a core logic having a host controller and a first root hub coupled thereto, a second root hub external to the core logic and coupled to the first root hub via a mapping interface, and a plurality of USB ports coupled to the second root hub, each of the USB ports adapted to couple an external USB device.
    Type: Grant
    Filed: June 4, 2001
    Date of Patent: August 10, 2004
    Assignee: Winbond Electronics Corp.
    Inventors: Liang-Hsi Chang, Iun-Bohr Rong, Ping-Ying Chu, Chao-Ting Kao
  • Publication number: 20030169188
    Abstract: A data entry and processing system providing for simple two stroke entry of numerous auxiliary alpha-numeric data in addition to the single stroke entry of numeric data, using conventional data entry keys. The key array includes a set of radial direction indicator keys that are used with the conventional keys to select and enter a given alpha-numeric data item. An LCD display, a pre-programed micro-processor and other electronic components are included to display the data entries, as well as to convert entered data signals to the necessary DTMF tones for telecommunication or ASCII codes for computer data entries. The system is simple for use by ordinary users, and all electronic components are standard, minuscule in size, small in number, low in power need and low in cost. It is particularly adaptable for miniaturized device application.
    Type: Application
    Filed: September 30, 2002
    Publication date: September 11, 2003
    Applicant: Keytouch Corporation
    Inventor: Liang Hsi Chang
  • Publication number: 20020184429
    Abstract: A USB host system includes a core logic having a host controller and a first root hub coupled thereto, a second root hub external to the core logic and coupled to the first root hub via a mapping interface, and a plurality of USB ports coupled to the second root hub, each of the USB ports adapted to couple an external USB device.
    Type: Application
    Filed: June 4, 2001
    Publication date: December 5, 2002
    Inventors: Liang-Hsi Chang, Iun-Bohr Rong, Ping-Ying Chu, Chao-Ting Kao
  • Patent number: 6459777
    Abstract: A data entry and processing system providing for simple two stroke entry of numerous auxiliary alpha-numeric data in addition to the single stroke entry of numeric data, using conventional data entry keys. The key array includes a set of radial direction indicator keys that are used with the conventional keys to select and enter a given alpha-numeric data item. An LCD display, a pre-programed micro-processor and other electronic components are included to display the data entries, as well as to convert entered data signals to the necessary DTMF tones for telecommunication or ASCII codes for computer data entries. The system is simple for use by ordinary users, and all electronic components are standard, miniscule in size, small in number, low in power need and low in cost. It is particularly adaptable for miniaturized device application.
    Type: Grant
    Filed: September 17, 2001
    Date of Patent: October 1, 2002
    Assignee: Keytouch Corporation
    Inventor: Liang Hsi Chang
  • Publication number: 20020051525
    Abstract: A data entry and processing system providing for simple two stroke entry of numerous auxiliary alpha-numeric data in addition to the single stroke entry of numeric data, using conventional data entry keys. The key array includes a set of radial direction indicator keys that are used with the conventional keys to select and enter a given alpha-numeric data item. An LCD display, a pre-programed micro-processor and other electronic components are included to display the data entries, as well as to convert entered data signals to the necessary DTMF tones for telecommunication or ASCII codes for computer data entries. The system is simple for use by ordinary users, and all electronic components are standard, miniscule in size, small in number, low in power need and low in cost. It is particularly adaptable for miniaturized device application.
    Type: Application
    Filed: September 17, 2001
    Publication date: May 2, 2002
    Applicant: Keytouch Corporation
    Inventor: Liang Hsi Chang
  • Patent number: 6320942
    Abstract: A data entry and processing system providing for simple two stroke entry of numerous auxiliary alpha-numeric data in addition to the single stroke entry of numeric data, using conventional data entry keys. The key array includes a set of radial direction indicator keys that are used with the conventional keys to select and enter a given alpha-numeric data item. An LCD display, a pre-programed micro-processor and other electronic components are included to display the data entries, as well as to convert entered data signals to the necessary DTMF tones for telecommunication or ASCII codes for computer data entries. The system is simple for use by ordinary users, and all electronic components are standard, miniscule in size, small in number, low in power need and low in cost. It is particularly adaptable for miniaturized device application.
    Type: Grant
    Filed: December 31, 1998
    Date of Patent: November 20, 2001
    Assignee: Keytouch Corporation
    Inventor: Liang Hsi Chang