Patents by Inventor Seraphin N. Itoua

Seraphin N. Itoua 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).

  • APPARATUS FOR DRIVING AN LCD DISPLAY WITH REDUCTED POWER CONSUMPTION
    Publication number: 20090219270
    Abstract: Apparatus (200) for driving an LCD display. The apparatus (200) comprises a source driver which is operated between a first power supply rail (VDDH) and a second power supply rail (VSSH). The source driver comprises a power buffer (22) being arranged between the first and the second power supply rails (VDDH, VSSH). The power buffer (22) provides at an output (32) a virtual voltage (VV) of about half the voltage between the two power supply rails (VDDH, VSSH). Furthermore, a P-buffer (20) and an N-buffer (21) are provided. The P-buffer (20) is situated between the first power supply rail (VDDH) and the virtual voltage (VV), and the N-buffer (21) is situated between the virtual voltage (VV) and the second power supply rail (VSSH). The P-buffer (20; 31) is driven at its input side (27) by gamma voltages in an upper voltage regime (VinputP) and the N-buffer (21) is at its input side (28) driven by gamma voltages in a lower voltage regime.
    Type: Application
    Filed: October 29, 2006
    Publication date: September 3, 2009
    Applicant: NXP B.V.
    Inventors: Milen Penev, Sergey Kuznetsov, Seraphin N. Itoua