Patents by Inventor Mu-I Helton CHEN

Mu-I Helton CHEN 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).

  • Autofocusing a macro object by an imaging device
    Patent number: 10212330
    Abstract: A method and device for autofocusing a macro object by an imaging device is provided. The imaging device includes a lens. In one aspect, the method includes: providing two or more focus perimeters in a viewfinder; obtaining a group of focus values, the group of focus values including at least one focus value associated with each of the two or more focus perimeters, each focus value in the group of focus values including a magnitude and a direction for causing movement of the lens; comparing focus values in the group of focus values to identify a macro object focus value; and in response to identifying the macro object focus value, determining autofocus settings based on the macro object focus value.
    Type: Grant
    Filed: October 30, 2015
    Date of Patent: February 19, 2019
    Assignee: BlackBerry Limited
    Inventors: Martin Frank Clayton Van Hoeckel, Matthew Everitt Wakelin, Mu-I Helton Chen
  • Auto-focus control in a camera to prevent oscillation
    Patent number: 9854150
    Abstract: A method and device for auto-focus control in an imaging device is provided. The imaging device includes a lens. In one aspect, a method includes: obtaining a first lens position phase difference; after obtaining the first lens position phase difference, detecting lens movement; obtaining a second lens position phase difference; comparing the second lens position phase difference to the first lens position phase difference to determine whether the second lens position phase difference is greater than the first lens position phase difference; and in response to determining that the second lens position phase difference is greater than the first lens position phase difference, determining autofocus settings by a contrast detection method.
    Type: Grant
    Filed: October 30, 2015
    Date of Patent: December 26, 2017
    Assignee: BlackBerry Limited
    Inventors: Martin Frank Clayton Van Hoeckel, Matthew Everitt Wakelin, Mu-I Helton Chen
  • AUTOFOCUSING A MACRO OBJECT BY AN IMAGING DEVICE
    Publication number: 20170118394
    Abstract: A method and device for autofocusing a macro object by an imaging device is provided. The imaging device includes a lens. In one aspect, the method includes: providing two or more focus perimeters in a viewfinder; obtaining a group of focus values, the group of focus values including at least one focus value associated with each of the two or more focus perimeters, each focus value in the group of focus values including a magnitude and a direction for causing movement of the lens; comparing focus values in the group of focus values to identify a macro object focus value; and in response to identifying the macro object focus value, determining autofocus settings based on the macro object focus value.
    Type: Application
    Filed: October 30, 2015
    Publication date: April 27, 2017
    Applicant: BLACKBERRY LIMITED
    Inventors: Martin Frank Clayton VAN HOECKEL, Matthew Everitt WAKELIN, Mu-I Helton CHEN
  • AUTO-FOCUS CONTROL IN A CAMERA TO PREVENT OSCILLATION
    Publication number: 20170118395
    Abstract: A method and device for auto-focus control in an imaging device is provided. The imaging device includes a lens. In one aspect, a method includes: obtaining a first lens position phase difference; after obtaining the first lens position phase difference, detecting lens movement; obtaining a second lens position phase difference; comparing the second lens position phase difference to the first lens position phase difference to determine whether the second lens position phase difference is greater than the first lens position phase difference; and in response to determining that the second lens position phase difference is greater than the first lens position phase difference, determining autofocus settings by a contrast detection method.
    Type: Application
    Filed: October 30, 2015
    Publication date: April 27, 2017
    Applicant: BLACKBERRY LIMITED
    Inventors: Martin Frank Clayton VAN HOECKEL, Matthew Everitt WAKELIN, Mu-I Helton CHEN