Display System Having Image Capture Device and Adjustable Visible Light Filter

• US 20160248954A1
• Filed: 02/19/2015
• Published: 08/25/2016
• Est. Priority Date: 02/19/2015
• Status: Active Grant

• Current Assignee: Dell Products LP (Dell Technologies Inc.)
• Original Assignee: Dell Products LP (Dell Technologies Inc.)
• Inventors: Knepper, Lawrence E., Aurongzeb, Deeder M., Torres, Christopher A., Lanzoni, Thomas
• Granted Patent: US 9,615,010 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G02B 5/208 for use with infrared or ultraviolet radiation, e.g. for separating visible light from infrared and/or ultraviolet radiation
• CPC Class Codes: G06F 1/1605 Multimedia displays, e.g. with integrated or attached speakers, cameras, microphones
• CPC Class Codes: G06F 1/1643 the display being associated to a digitizer, e.g. laptops that can be used as penpads details related to the relative motion of the display enclosure with respect to the body enclosure, e.g. to move between laptop and tablet PC configuration G06F1/1615
• CPC Class Codes: G06F 1/1686 the I/O peripheral being an integrated camera
• CPC Class Codes: G06F 1/169 the I/O peripheral being an integrated pointing device, e.g. trackball in the palm rest area, mini-joystick integrated between keyboard keys, touch pads or touch stripes G06F1/1643 takes precedence; constructional details of pointing devices G06F3/033
• CPC Class Codes: H04N 23/53 of electronic viewfinders, e.g. rotatable or detachable
• CPC Class Codes: H04N 23/57 Mechanical or electrical details of cameras or camera modules specially adapted for being embedded in other devices
• CPC Class Codes: H04N 23/75 by influencing optical camera components
• CPC Class Codes: H04N 23/76 by influencing the image signals

Abstract

A display system having a visible light filter that can be enabled and disabled to preferentially filters visible light over near-field infrared light is disclosed.

Claims

1. A display system comprising:

a housing comprising a back cover;

a display panel attached to the housing;

an image capture device attached to the housing, the image capture device comprising an image sensor to detect received light of an image; and

a visible light filter attached to the housing to preferentially filter visible light provided to the image capture device as compared to near-field infrared light, wherein, in response to receiving an enabled filter signal at a first input the visible light transmittance of the visible light filter is to be reduced at least twice as much as a near-field infrared transmittance.

2. The device of claim 1, comprising:

a touch sensitive input device, wherein the display panel is disposed between the touch sensitive input device and the back cover.

3. The device of claim 2, further comprises:

a first signal communication path connected to the first input of the visible light filter that comprises a first conductive portion of the touch panel.

4. The device of claim 3, further comprises an image transmission path that includes a first portion through the visible light filter and a second portion through the touch sensitive input device.

5. The device of claim 3, further comprises a second signal communication path connected to a second input of the visible light filter including a second conductive portion of the touch panel

6. The device of claim 3, wherein the touch sensitive input device comprises a conductive layer along a plane substantially parallel to a front-most major surface of the touch sensitive device, the conductive layer including a second conductive portion to detect a touch at the touch sensitive input device.

7. The device of claim 6, wherein the first and second conductive portions are transparent conductors.

8. The device of claim 1, wherein a signal communication path connected to the first input of the visible light filter comprises a conductive portion of the display panel.

9. The device of claim 8, wherein the signal communication path is a transparent conductor.

10. The device of claim 1, wherein a signal communication path of the display system that is connected to the first input of the visible light filter comprises a transparent conductor.

11. The device of claim 1, further comprising:

a touch sensitive input device, wherein the display panel is disposed between the touch sensitive input device and the back cover;

the visible light filter further comprises;

a first bias layer coupled to the first input, and

a second bias layer coupled to a second, input and is spaced apart from the first bias layer, the visible light filter to have different voltage differential between the first and second bias layers when enabled than when disabled;

a control circuit comprising a first output and a second output;

a first signal communication path from the first output of the control circuit to the first input of the visible light filter; and

a second signal communication path from the second output of the control circuit to the second input of the visible light filter, wherein only one of the first control signal path and the second signal path have a conductive portion at the display panel.

12. A method comprising:

receiving a first control information at a visible light filter integrated with a display panel at a common housing;

setting the visible light filter to a first transmittance based upon the first control information, the first transmittance comprising a first near-field infrared light transmittance and a first visible light transmittance;

receiving a second control information at the visible light filter;

setting the visible light filter to a second transmittance based upon the second control information, the second transmittance comprising a second near-field infrared light transmittance and a second visible light transmittance, in response to receiving the second control information the visible light transmittance of the visible light filter is reduced at least twice as much as the near-field infrared transmittance.

13. The method of claim 12, wherein receiving the first control information includes receiving the first control information via a transparent conductor.

14. The method of claim 12, wherein receiving the first control information includes receiving the first control information via a transparent conductor disposed at a touch sensitive module integrated at the common housing.

15. The method of claim 12, further comprising:

in response to initiating a user identity determination, providing the second control information.

16. The method of claim 15, further comprising:

in response to determining an identity of the user, receiving the first control information at the visible light filter to return the visible light filter to the first transmittance.

17. The method of claim 16, further comprising determining the identity of the user based upon an image of the user'"'"'s iris obtained while the visible light filter had the second transmittance.

18. A system comprising:

a display housing comprising a back cover;

a touch sensitive input device comprising a plurality of transparent conductor regions, including first transparent conductor region;

a display panel attached to the housing, wherein the display panel is disposed between the touch sensitive input device and the back cover,

an image capture device attached to the housing, the image capture device comprising an image sensor to detect received light of an image; and

a visible light filter attached to the housing to preferentially filter visible light as compared to near-field infrared light, an input of the visible light filter connected to a signal communication path that includes the first transparent conductor region, wherein in response to receiving an enabled filter signal at the input, the visible light transmittance of the visible light filter is to be reduced at least twice as much as the near-field infrared transmittance.

19. The system of claim 18, further comprising a data processor executing code that causes the enabled filter signal to be communicated to the visible light filter as part of an operation confirming an identity of a user.

20. The system of claim 18, further comprising a data processor executing code that causes the enabled filter signal to be communicated to the visible light filter as part of an operation to receive an image of a user'"'"'s iris, and to confirm an identity of the user based upon the image.