Patents by Inventor Cher Eng Lim

Cher Eng Lim 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).

  • Microcontroller with a caller identification unit
    Patent number: 5781621
    Abstract: A microcontroller (100) for processing caller information received from a telephone line to display on a display panel of a telecommunication device. The microcontroller (100) includes a central processing unit (160), a display control unit (110) for controlling the display panel, a ring detector (140), a carrier detector (150) for detecting the caller information, memory (120) for storing a plurality of predetermined control parameters, and a caller identification unit (130) for providing the caller information to the display control unit (110). Within the caller identification unit (130), a power management (134) unit controls a power supply (170) to a signal demodulator (132), based on the plurality of predetermined control parameters, to process the caller information. Of the plurality of predetermined control parameters, a first control parameter enables the power supply and a second control parameter disables the power supply (170) to the signal demodulator (132).
    Type: Grant
    Filed: February 22, 1996
    Date of Patent: July 14, 1998
    Assignee: Motorola, Inc.
    Inventors: Cher Eng Lim, Tiong Kee Chua, Satinder Jit Singh Sohi, Luen Hin Kwok