Patents by Inventor Chao-Min Liao

Chao-Min Liao 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).

  • METHOD AND APPARATUS FOR TESTING AND ADJUSTING FOCUS OF AN IMAGING DEVICE
    Publication number: 20060245748
    Abstract: A focus-adjusting apparatus and platform of an imaging device includes a base, a holding device, a gear set, an imaging device and a stepping motor. The imaging device is disposed on the base during the focus-adjusting process and can be removed from the base after the focus-adjusting process. The stepping motor adjusts the focus of the imaging device and an image-processing unit calculates and records the modulation transfer function of the imaging device. The focus of the imaging device is set to a value with which the imaging device has the optimum modulation transfer function.
    Type: Application
    Filed: April 26, 2006
    Publication date: November 2, 2006
    Inventors: Chin-Kang Chuang, Chao-Min Liao, Chia-Chang Li