Patents by Inventor De Lu QU

De Lu QU 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).

  • ELECTRONIC DEVICE
    Publication number: 20100060082
    Abstract: A digital camera includes: a battery installation part connectable to either an AC adapter or a battery; a mechanical shutter and a diaphragm; and a controller for supplying, to the mechanical shutter and the diaphragm, power from the AC adapter or battery that is connected to the battery installation part. The controller monitors a voltage output through the battery installation part during the power supply to the mechanical shutter and the diaphragm, and determines whether or not the AC adapter is connected to the battery installation part in accordance with the behavior of the monitored voltage changes.
    Type: Application
    Filed: September 10, 2009
    Publication date: March 11, 2010
    Inventor: De Lu QU