Patents Assigned to Cellonics Incorporated Pte, Ltd.
  • Method and apparatus for generating pulse width modulated waveforms
    Patent number: 7054360
    Abstract: Pulse width modulation of a digital signal using a nonlinear type of pulse generator is described. The nonlinear pulse generator is characterized by its transfer characteristic which has alternating stable and unstable operating regions. The pulse width modulated signal is generated by varying the operating point between among the unstable and stable operating regions.
    Type: Grant
    Filed: March 11, 2002
    Date of Patent: May 30, 2006
    Assignee: Cellonics Incorporated Pte, Ltd.
    Inventors: Jurianto Joe, Chwee Mei Wong
  • PSK transmitter and correlator receiver for UWB communications system
    Patent number: 6724269
    Abstract: A circuit to generate antipodal PSK signal and a correlator circuit for recovering information from PSK (phase shift keying) UWB transmissions includes providing a circuit component characterized by a transfer function having alternating stable and unstable regions. By setting the operating point in a stable region or an unstable region, a non-oscillatory or an oscillatory output signal can be produced.
    Type: Grant
    Filed: August 6, 2002
    Date of Patent: April 20, 2004
    Assignee: Cellonics Incorporated Pte., Ltd.
    Inventor: Jurianto Joe
  • Method and apparatus for signal detection in ultra wide-band communications
    Patent number: 6630897
    Abstract: Methods and apparatus for detecting ultra wide-band signals using circuitry having nonlinear dynamics characteristics are disclosed. The receiver circuit can be implemented using a simple tunnel diode or using an op-amp to provide dynamic characteristics. The detector can be used in a variety of modulation schemes, including but not limited to an ON-OFF keying scheme, an M-ary pulse position modulation scheme, and a pulse width modulation scheme. The approach requires only a single frame to detect the signal.
    Type: Grant
    Filed: August 5, 2002
    Date of Patent: October 7, 2003
    Assignee: Cellonics Incorporated PTE LTD
    Inventors: Kay Soon Low, Jurianto Joe
  • Method and apparatus for generating pulse width modulated waveforms
    Publication number: 20030086488
    Abstract: Pulse width modulation of a digital signal using a nonlinear type of pulse generator is described. The nonlinear pulse generator is characterized by its transfer characteristic which has alternating stable and unstable operating regions. The pulse width modulated signal is generated by varying the operating point between among the unstable and stable operating regions.
    Type: Application
    Filed: March 11, 2002
    Publication date: May 8, 2003
    Applicant: CELLONICS INCORPORATED PTE, LTD.
    Inventors: Jurianto Joe, Chwee Mei Wong