Compensation for display device flicker

• US 8,675,029 B2
• Filed: 04/21/2011
• Issued: 03/18/2014
• Est. Priority Date: 04/06/2006
• Status: Active Grant

• Current Assignee: DRS Laurel Technologies Partnership
• Original Assignee: DRS Signal Solutions, Inc. (Leonardo S.p.A.)
• Inventors: Benjamin, Scott J, Andrusiak, Martin J., Werner, Ralph A.
• Primary Examiner(s): HARRIS, DOROTHY H
• Application Number:
  US13/091,766
• Publication Number:
  US 20110199287A1
• Time in Patent Office: 1,062 Days
• Field of Search: 345/87, 345/690
• US Class Current: 345/690
• CPC Class Codes: G09G 2320/0247 Flicker reduction other than flicker reduction circuits used for single beam cathode-ray tubes
• CPC Class Codes: G09G 2320/0252 Improving the response speed
• CPC Class Codes: G09G 2320/0257 Reduction of after-image effects
• CPC Class Codes: G09G 2320/0261 in the context of movement of objects on the screen or movement of the observer relative to the screen
• CPC Class Codes: G09G 2320/0606 Manual adjustment
• CPC Class Codes: G09G 3/3648 using an active matrix G09G3/367 - G09G3/3696 take precedence
• CPC Class Codes: G09G 5/14 Display of multiple viewports

Abstract

Systems and methods are provided for use in correcting flicker of a display (e.g., an LCD display). For example, correction may employ the insertion of at least one transition data frame between display data frames for use in displaying a transition image by pixel elements of the display such that a user perceives display of a constant average luminance by the pixel elements.

Claims

1. A method for use in correcting flicker of a display comprising a plurality of pixel elements, wherein the method comprises:

providing a plurality of sequentially provided display data frames;

generating a plurality of transition data frames to be displayed using the plurality of pixel elements, wherein at least one transition data frame is generated for each of the plurality of sequentially provided display data frames and output in place of updating the display using one or more of the plurality of sequentially provided display data frames, wherein each of the plurality of transition data frames is generated using a new display data frame of the plurality of sequentially provided display data frames, a previously generated transition data frame generated using a display data frame of the plurality of sequentially provided display data frames provided prior to the new display data frame, and one or more user provided parameters comprising at least one user provided parameter corresponding to a selected transition state of a rising pixel transition or a falling pixel transition of one or more pixel elements; and

providing an input apparatus to a user for modifying at a minimum the at least one user provided parameter corresponding to a selected transition state of a rising pixel transition or a falling pixel transition of one or more pixel elements used to generate the plurality of transition data frames so as to allow the user to adjust luminance characteristics of the display of the plurality of transition data frames as the plurality of transition data frames are being displayed to allow viewing by the user with effective flicker reduction.

2. The method of claim 1, wherein generating the plurality of transition data frames to be displayed using the plurality of pixel elements comprises:

providing a copy of a previously generated transition data frame used to initiate display of an image by the plurality of pixel elements at a first time;

providing a new display data frame to a new frame memory buffer;

generating at least one transition data frame using the previously generated transition data frame, the new display data frame copied to the new frame memory buffer, and the one or more user provided parameters;

providing the at least one transition data frame for use in initiating display of an image using the plurality of pixel elements at a second time; and

recording a copy of the at least one transition data frame for use in generating a subsequently generated transition frame using another new display data frame.

3. The method of claim 1, wherein the one or more user provided parameters comprise a selected percentage corresponding to a selected transition state of one or more pixel elements.

4. The method of claim 1, wherein the plurality of pixel elements form a window within a display that includes additional pixel elements for displaying one or more other images.

5. A system for use in correcting flicker of a display device comprising a plurality of pixel elements, wherein the system comprises:

application processing apparatus to generate a plurality of sequential display data frames;

a new frame memory buffer to receive a copy of a new display data frame of the plurality of sequential display data frames;

a previous frame memory buffer to receive a copy of a transition data frame of a plurality of transition data frames which has been provided for display by the plurality of pixel elements;

processing apparatus to generate the plurality of transition data frames to be displayed using the plurality of pixel elements, wherein at least one transition data frame is generated for each of the plurality of sequential display data frames and output in place of updating the display using one or more of the plurality of sequential display data frames, wherein each of the plurality of transition data frames is generated using a new display data frame of the plurality of sequential display data frames, a previously generated transition data frame generated using a display data frame of the plurality of sequential display data frames provided prior to the new display data frame, and one or more user provided parameters comprising at least one user provided parameter corresponding to a selected transition state of a rising pixel transition or a falling pixel transition of one or more pixel elements; and

an input apparatus for allowing a user to modify at a minimum the at least one user provided parameter corresponding to a selected transition state of a rising pixel transition or a falling pixel transition of one or more pixel elements used to generate the plurality of transition data frames so as to allow the user to adjust luminance characteristics of the display of the plurality of transition data frames as the plurality of transition data frames are being displayed to allow viewing by the user with effective flicker reduction.

6. The system of claim 5, wherein the one or more user provided parameters comprise a selected percentage corresponding to a selected transition state of a pixel element.

7. The system of claim 5, wherein the plurality of pixel elements form a window within the display device that includes additional pixel elements for displaying one or more other images.