Interactive display

• US 10,705,631 B2
• Filed: 11/06/2012
• Issued: 07/07/2020
• Est. Priority Date: 11/06/2012
• Status: Active Grant

• Current Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Original Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Inventors: Goeltzenleuchter, Courtney D.
• Primary Examiner(s): Lam, Vinh T
• Application Number:
  US14/429,378
• Publication Number:
  US 20150261331A1
• Time in Patent Office: 2,800 Days
• Field of Search: 345173-179, 178 1801- 2001
• CPC Class Codes: G06F 2203/04104 Multi-touch detection in digitiser, i.e. details about the simultaneous detection of a plurality of touching locations, e.g. multiple fingers or pen and finger
• CPC Class Codes: G06F 3/017 Gesture based interaction, e.g. based on a set of recognized hand gestures interaction based on gestures traced on a digitiser G06F3/04883
• CPC Class Codes: G06F 3/03 Arrangements for converting the position or the displacement of a member into a coded form
• CPC Class Codes: G06F 3/03545 Pens or stylus
• CPC Class Codes: G06F 3/041 Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
• CPC Class Codes: G09G 2310/04 Partial updating of the display screen
• CPC Class Codes: G09G 2320/0252 Improving the response speed
• CPC Class Codes: G09G 2340/0435 Change or adaptation of the frame rate of the video stream
• CPC Class Codes: G09G 2354/00 Aspects of interface with display user
• CPC Class Codes: G09G 3/3208 organic, e.g. using organic light-emitting diodes [OLED]

Abstract

Examples disclosed herein relate to an interactive display. Motion of an input device on a display screen is tracked and pixels of the display screen that have changed based on the tracked motion are updated. Portions of the display screen corresponding to the updated pixels are refreshed.

Claims

1. An interactive display system, comprising:

a display screen;

an input sensor to track motion of an input device at a predetermined tracking rate;

a high speed display interconnect to connect the display screen to a graphics card of a display controller; and

the display controller connected to the display screen by the high speed display interconnect, the display controller to;

select a plurality of pixels, fewer than a total number of pixels, that have changed based on motion of the input device on the display screen determined during tracking,

wherein the pixels are selected as input is detected by the input sensor;

transmit pixel data directly to the display screen over the high speed display interconnect, the pixel data only including updates to the plurality of pixels that have changed, wherein the display controller is to transmit the pixel data as the plurality of pixels are selected with no artificial refresh rate limit, and

retain image data, wherein the image data is retained within pixels of the display screen or in an integrated frame buffer of the display controller.

2. The interactive display system of claim 1, wherein the tracking rate is at least 500 Hz.

3. The interactive display system of claim 1, wherein the high speed display interconnect comprises at least one of a bi-directional image data path between the display controller and the display screen and a dedicated data path between the input sensor and the display controller, wherein the input sensor is connected to the display screen.

4. The interactive display system of claim 1, wherein the display screen comprises at least one of a touch-screen display, a touch-sensitive display, and a multi-touch display.

5. The interactive display system of claim 1, wherein the display screen is an organic light-emitting diode (OLED) screen.

6. The interactive display system of claim 1, wherein the input device comprises at least one of a stylus, a hand gesture, a pointing device, a clicking device, and a mouse.

7. A method for implementing an interactive display, comprising:

tracking motion of an input device on a display screen, wherein the display screen comprises at least one of a touch-screen display, a touch-sensitive display, and a multi-touch display;

selecting pixels that have changed based on and determined during the tracking, wherein the pixels are selected as input is detected an input sensor;

transmitting, directly, as the pixels are selected, and with no refresh rate limit, a minimum bandwidth transmission from a controller to the display screen over a high speed connection, the minimum bandwidth transmission indicating updates to the selected pixels; and

refreshing portions of the display screen corresponding to the selected pixels, wherein fewer than a total number of pixels of the display screen are refreshed.

8. The method of claim 7, further comprising storing display data in the total number of pixels or in an integrated frame buffer.

9. The method of claim 7, wherein refreshing portions of the display screen comprises:

sending the updated pixels to the display screen; and

partially refreshing the display screen based on the updated pixels.

10. The method of claim 7, wherein a refresh rate of the display screen is at least 500 Hz and wherein a response time of the display screen to the input device is less than 2 ms.

11. A non-transitory computer-readable medium comprising instructions that, when executed, cause an interactive display system to:

track motion of an input device on a display screen;

select pixels of the display screen that have changed based on and determined during the tracked motion,

wherein the pixels are selected as input is detected by an input sensor;

send directly, as the pixels are selected, to the display screen a transmission only including updates to the selected pixels that have changed with no artificial refresh rate limit to the transmission; and

refresh portions of the display screen corresponding to the selected pixels.

12. The non-transitory computer-readable medium of claim 11, comprising further instructions that, when executed, cause the interactive display system to store the selected pixels in an internal frame buffer of the display screen.

13. The non-transitory computer-readable medium of claim 11, comprising further instructions that, when executed, cause the interactive display system to reduce a lag between motion of the input device and sending of the selected pixels to the display screen.