Eye tracking for display resolution adjustment in a virtual reality system
A virtual reality system and a display device that can be used, for example, as part of the virtual reality system. The display device can have more than one data driver, such as an even row data driver and an odd row data driver. The display device can have a configurable resolution such that one region of the display device operates at full resolution while another region of the display device operates at a reduced resolution. The virtual reality system can also track an eye gaze and adjust the full resolution region of the display device to track the eye gaze.
1. A virtual reality system, comprising:
a virtual reality headset comprising:
a display screen comprising a plurality of rows, and having a first region having a first native resolution and operating in reduced resolution by having an effective resolution lower than the first native resolution, and a second region having a second native resolution and operating in full resolution by having an effective resolution that is same as the second native resolution;
a selective scaling circuit configured to receive incoming rows of image data to be displayed on the display screen, and to scan the received rows of image data into rows of the display screen, wherein:
for the first region of the display screen, the rate at which incoming rows of image data are received is less than the rate at which the received rows are scanned into rows of the display screen, and
for the second region of the display screen, the rate at which the incoming rows of image data are received is the same as the rate at which the received rows are scanned into rows of the display screen; and
an eye tracking sensor to generate gaze data indicative of a gaze direction of the eye,
wherein a location of the second region operating in full resolution is adjusted based on the gaze direction of the eye.
2. The virtual reality system of claim 1 , wherein the eye tracking sensor is a camera that generates gaze data in the form of an image of the eye.
3. The virtual reality system of claim 1 , the location of the second region operating in full resolution is adjusted to match the gaze direction of the eye.
4. The virtual reality system of claim 1 , further comprising:
a virtual reality console to receive the gaze data from the virtual reality headset, and to adjust the location of the second region operating in full resolution by transmitting resolution configuration data to the virtual reality headset indicative of an adjusted location of the second region of the display screen operating in full resolution.
5. The virtual reality system of claim 1 , wherein the virtual reality console transmits image data to the virtual reality headset, and the virtual reality headset displays the image data on the display screen based on the resolution configuration data.
6. The virtual reality system of claim 1 , wherein the second region is surrounded by the first region.
7. A method of operation in a virtual reality system, comprising:
displaying an image in a display of the virtual reality system, the display comprising a plurality of rows and including a first region having a first native resolution and operating in reduced resolution by having an effective resolution lower than the first native resolution, and a second region having a second native resolution and operating in full resolution by having an effective resolution that is same as the second native resolution, and wherein displaying the image comprises:
receiving incoming rows of the image to be displayed, and scanning the received image rows into rows of the display, wherein:
for the first region of the display, the rate at which incoming rows of the image are received is less than the rate at which the received rows are scanned into rows of the display, and
for the second region of the display, the rate at which the incoming rows of the image are received is the same as the rate at which the received rows are scanned into rows of the display;
generating gaze data indicative of a gaze direction of an eye; and
adjusting a location of the second region operating in full resolution based on the gaze direction of the eye.
8. The method of claim 7 , wherein the gaze data is an image of the eye generated from a camera.
9. The method of claim 7 , wherein the location of the second region operating in full resolution is adjusted to match the gaze direction of the eye.
10. The method of claim 7 , further comprising:
receiving, at a virtual reality console, the gaze data from a virtual reality headset, and
wherein the location of the second region operating in full resolution is adjusted by transmitting resolution configuration data from the virtual reality console to the virtual reality headset indicative of an adjusted location of the second region of the display screen operating in full resolution.
11. The method of claim 7 , wherein the virtual reality console transmits image data to the virtual reality headset, and the virtual reality headset displays the image data on the display screen based on the resolution configuration data.
12. The method of claim 7 , wherein the second region is surrounded by the first region.