Systems and methods for operating an electro-optical shutter with variable transmissivity
Embodiments of systems and methods for operating an electro-optical shutter with variable transmissivity are described. In some embodiments, an Information Handling System (IHS) may include a processor and a memory coupled to the processor, the memory having program instructions stored thereon that, upon execution, cause the IHS to: receive context information, and control a transmissivity of the electro-optical shutter of a camera coupled to the IHS, at least in part, based upon the context information.
1. An Information Handling System (IHS), comprising:
a processor; and
a memory coupled to the processor, the memory having program instructions stored thereon that, upon execution, cause the IHS to:
receive context information;
select a transmissivity value among more than two transmissivity values for an electro-optical shutter of a camera coupled to the IHS based, at least in part, upon the context information; and
control a transmissivity of the electro-optical shutter of the camera based, at least in part, on the transmissivity value.
2. The IHS of claim 1 , wherein the context information comprises a privacy setting, and wherein to select the transmissivity value for the electro-optical shutter, the program instructions, upon execution, cause the IHS to: (a) increase the transmissivity value in response to the privacy setting having a first value, and (b) decrease the transmissivity value in response to the privacy setting having a second value greater than the first value.
3. The IHS of claim 1 , wherein to select the transmissivity value for the electro-optical shutter, the program instructions, upon execution, further cause the IHS to: (a) increase the transmissivity value until the IHS is capable of distinguishing visual features in an image captured by the camera, or (b) decrease the transmissivity value until the IHS is no longer capable of distinguishing the visual features but is capable of identifying a user's presence or proximity to the IHS.
4. The IHS of claim 1 , wherein the context information comprises a user's proximity to the IHS, and wherein to select the transmissivity value for the electro-optical shutter, the program instructions, upon execution, cause the IHS to: (a) increase the transmissivity value to a first transmissivity value of the more than two transmissivity values in response to a user being in a far-field of the IHS, and (b) decrease the transmissivity value to a second transmissivity value of the more than two transmissivity values in response to the user being in a near-field of the IHS.
5. The IHS of claim 1 , wherein the context information comprises at least one of: an identity of a user of the IHS, a time-of-day, a calendar event, a type of calendar event, an application currently under execution, a duration of execution of an application, a mode of execution of an application, or a user's gaze direction.
6. The IHS of claim 1 , wherein the context information comprises at least one of: a current location of the IHS, a current memory usage, a characteristic of a current network connection, a current power usage, an identification of a currently connected peripheral device, or a current IHS posture.
7. The IHS of claim 1 , wherein the electro-optical shutter is disposed on a bezel of a display coupled to the IHS.
8. The IHS of claim 1 , wherein the electro-optical shutter comprises a liquid crystal material disposed between at least two glass substrates, each glass substrate having a respective transparent electrode coupled thereto, and wherein to control the transmissivity of the electro-optical shutter, the program instructions, upon execution, cause the IHS to control a voltage applied to the liquid crystal material via the transparent electrode.
9. The IHS of claim 8 , wherein to control the voltage, the program instructions, upon execution, cause the IHS to apply a voltage ladder to the liquid crystal material.
10. The IHS of claim 8 , wherein the liquid crystal material is selected based upon a color of the bezel.
11. The IHS of claim 8 , wherein the liquid crystal material comprises at least one of: (a) a ferroelectrical material if the bezel is black, (b) a polymeric material if the bezel is white, or (c) a nematic or smectmatic material with color dye if the bezel is neither black nor white.
12. A memory storage device having program instructions stored thereon that, upon execution by one or more processors of an Information Handling System (IHS), cause the IHS to:
receive context information;
select a transmissivity value among more than two transmissivity values for an electro-optical shutter of a camera coupled to the IHS based, at least in part, upon the context information; and
control a transmissivity of the electro-optical shutter of the camera based, at least in part, on the transmissivity value.
13. The memory storage device of claim 12 , wherein the context information comprises a privacy setting, and wherein to select the transmissivity value for the electro-optical shutter, the program instructions, upon execution, cause the IHS to: (a) increase the transmissivity value in response to the privacy setting having a first value, and (b) decrease the transmissivity value in response to the privacy setting having a second value greater than the first value.
14. The memory storage device of claim 12 , wherein to select the transmissivity value for the electro-optical shutter, the program instructions, upon execution, further cause the IHS to: (a) increase the transmissivity value until the IHS is capable of distinguishing visual features in an image captured by the camera, or (b) decrease the transmissivity value until the IHS is no longer capable of distinguishing the visual features but is capable of identifying a user's presence or proximity to the IHS.
15. The memory storage device of claim 12 , wherein the context information comprises a user's proximity to the IHS, and wherein to select the transmissivity value for the electro-optical shutter, the program instructions, upon execution, cause the IHS to: (a) increase the transmissivity value to a first transmissivity value of the more than two transmissivity values in response to a user being in a far-field of the IHS, and (b) decrease the transmissivity value to a second transmissivity value of the more than two transmissivity values in response to the user being in a near-field of the IHS.
16. The memory storage device of claim 12 , wherein the context information comprises at least one of: an identity of a user of the IHS, a time-of-day, a calendar event, a type of calendar event, an application currently under execution, a duration of execution of an application, a mode of execution of an application, a user's gaze direction, a current location of the IHS, a current memory usage, a characteristic of a current network connection, a current power usage, an identification of a currently connected peripheral device, or a current IHS posture.
17. A method, comprising:
receiving context information;
selecting a transmissivity value among more than two transmissivity values for an electro-optical shutter of a camera coupled to an Information Handling System (IHS) based, at least in part, upon the context information; and
controlling a transmissivity of the electro-optical shutter of the camera based, at least in part, on the transmissivity value.
18. The method of claim 17 , wherein the context information comprises a privacy setting, the method further comprising: (a) increasing the transmissivity value in response to the privacy setting having a first value, and (b) decreasing the transmissivity value in response to the privacy setting having a second value greater than the first value.
19. The method claim 17 , further comprising: (a) increasing the transmissivity value until the IHS is capable of distinguishing visual features in an image captured by the camera, or (b) decreasing the transmissivity value until the IHS is no longer capable of distinguishing the visual features but is capable of identifying a user's presence or proximity to the IHS.
20. The method of claim 17 , wherein the context information comprises a user's proximity to the IHS, the method further comprising: (a) increasing the transmissivity value to a first transmissivity value of the more than two transmissivity values in response to a user being in a far-field of the IHS, and (b) decreasing the transmissivity value to a second transmissivity value of the more than two transmissivity values in response to the user being in a near-field of the IHS.