Apparatus, Display Module and Method for Adaptive Blank Frame Insertion

• US 20130100150A1
• Filed: 03/25/2010
• Published: 04/25/2013
• Est. Priority Date: 03/25/2010
• Status: Active Grant

• Current Assignee: Nokia Technologies Oy (Nokia Corporation)
• Original Assignee: Nokia Corporation
• Inventors: Kurikko, Jarmo Juhani
• Granted Patent: US 10,991,338 B2
• Time in Patent Office: Days
• US Class Current: 345/545
• CPC Class Codes: G09G 2310/063 Waveforms for resetting the whole screen at once
• 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 2320/0626 for control of overall brightness
• CPC Class Codes: G09G 2320/10 Special adaptations of display systems for operation with variable images
• CPC Class Codes: G09G 2360/144 the light being ambient light
• CPC Class Codes: G09G 2360/18 Use of a frame buffer in a display terminal, inclusive of the display panel
• CPC Class Codes: G09G 3/20 for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
• CPC Class Codes: G09G 3/2081 with combination of amplitude modulation and time modulation space and time error diffusion G09G3/2066
• CPC Class Codes: G09G 3/3406 Control of illumination source illumination devices structurally associated with liquid crystal cells G02F1/1336
• CPC Class Codes: G09G 5/001 Arbitration of resources in a display system, e.g. control of access to frame buffer by video controller and/or main processor
• CPC Class Codes: G09G 5/10 Intensity circuits

Abstract

An apparatus including a controller; a display; a frame memory configured to load a frame of data to the display and configured to be filled by a frame of data from the controller, wherein the controller is configured to control the insertion of blank fields between frames of data displayed on the display in dependence upon a detected context.

Claims

1. An apparatus comprising:

a controller;

a display;

a frame memory configured to load a frame of data to the display and configured to be filled by a frame of data from the controller,

wherein the controller is configured to control the insertion of blank fields with respect to frames of data displayed on the display in dependence upon a detected context.

2. An apparatus as claimed in claim 1, wherein the controller is configured to start inserting blank fields with respect to frames of data displayed on the display in dependence upon detecting a predetermined change in context.

3. An apparatus as claimed in claim 2, wherein the predetermined change in context is a decrease in a detected illuminance below a threshold.

4. An apparatus as claimed in claim 1, wherein the controller is configured to change the duration of the inserted blank fields in dependence upon detecting a predetermined change in context.

5. An apparatus as claimed in claim 4, wherein the predetermined change in context is a change in detected illuminance.

6. An apparatus as claimed in claim 1, wherein the controller is configured to dynamically change the duration of the inserted blank fields in real-time dependence upon detecting a dynamic change in context.

7. An apparatus as claimed in claim 6, wherein the dynamic change in context is a change in detected illuminance.

8. An apparatus as claimed in claim 1, wherein the context is ambient light conditions.

9. An apparatus as claimed in claim 1, further comprising lighting for the display controlled by the controller;

wherein the controller is configured to control insertion of blank fields with respect to frames of data displayed on the display by temporarily controlling the lighting for the duration of the blank field.

10. An apparatus as claimed in claim 9, wherein the controller is configured to switch the lighting with a programmable duty cycle.

11. An apparatus as claimed in claim 10, wherein the duty cycle is dynamically controllable to have a value between 100% and 10% .

12. An apparatus as claimed in claim 10, wherein the duty is dependent upon ambient light conditions.

13. An apparatus as claimed in claim 10, wherein the duty is dependent upon detected illuminance.

14. An apparatus as claimed in claim 1, further comprising a detector for detecting the context.

15. An apparatus as claimed in claim 14, wherein the detector is an ambient light sensor.

16. An apparatus as claimed in claim 1, wherein the display is a high luminance display.

17. Apparatus as claimed in claim 15, wherein the frame memory is configured to load frames of data to the display at a frame rate that is dependent upon ambient light conditions.

18. An apparatus as claimed in claim 1, wherein the controller is configured to control the insertion of blank fields between frames of data displayed on the display in dependence upon a detected context.

19. An apparatus as claimed in claim 18, further comprising backlighting for the display controlled by the controller;

wherein the controller is configured to control insertion of blank fields between frames of data displayed on the display by temporarily switching off or dimming the backlighting for the duration of the blank field.

20. An apparatus as claimed in claim 1, wherein the controller is configured to control the scanning of blank sub-frames across the display in dependence upon a detected context.

21. An apparatus as claimed in claim 1, wherein the apparatus is a portable electronic device.

22. A module comprising:

a controller;

a display;

a frame memory configured to load a frame of data to the display and configured to be filled by a frame of data from the controller,

wherein the controller is configured to control the insertion of blank fields with respect to frames of data displayed on the display in dependence upon a context detected by a detector.

23. A module as claimed in claim 22, further comprising lighting for the display controlled by the controller;

wherein the controller is configured to control insertion of blank fields with respect to frames of data displayed on the display by temporarily controlling the lighting for the duration of the blank field.

24. A module as claimed in claim 23, wherein the controller is configured to switch the lighting with a programmable duty cycle dependent upon the detected context.

25. A module as claimed in claim 22, wherein the detector is an ambient light sensor.

26. A method comprising:

causing a display to display a frame of data loaded from a frame memory;

causing the display to display a blank field for a duration dependent upon a detected context;

causing the frame memory to be filled from a controller by a second frame of data; and

causing the display to display the second frame of data.

27. A method as claimed in claim 26, further comprising temporarily controlling the lighting for the duration of the blank field to control insertion of blank fields with respect to frames of data displayed on the display.

28. A method as claimed in claim 27, wherein the lighting is switched with a programmable duty cycle dependent upon the detected context.

29. A method as claimed in claim 26, wherein the context is ambient light illumination.