Patents by Inventor Chi-Man Lin

Chi-Man Lin 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).

  • Circuit for providing a voltage ramp signal
    Patent number: 5502410
    Abstract: A circuit (10) for generating a voltage ramp signal (V.sub.RAMP) having minimum amplitude variation over a large frequency range has been provided. The circuit includes a comparator (40) for comparing a voltage across a ramp capacitor (32) with a reference voltage. From the result of this comparison, a sampling capacitor (16) is discharged during the time that the voltage ramp signal is less than the reference voltage and charged during the time that the voltage ramp signal is greater than the reference voltage. The resulting voltage across the sampling capacitor is held and fed back to a transconductance amplifier (20) which adjusts the current that charges the ramp capacitor thereby adjusting the peak amplitude of the voltage ramp signal.
    Type: Grant
    Filed: March 14, 1994
    Date of Patent: March 26, 1996
    Assignee: Motorola, Inc.
    Inventors: Pak-Kong Dunn, Kwok-Ban Nip, Chi-Man Lin