Processing Means and Display System
AssigneeEnvisics Ltd
InventorTimothy Smeeton
Life of this patent
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Abstract
A processing means is disclosed. The processing means is for use in a display system to display a picture in an eye box to a user. The processing means is configured to: receive a signal indicative of a presence a polarizing element in the eye box; determine a corrective data set for the picture based on the signal; and output the corrective data set to the display system such that the picture is displayed based on the presence of the polarizing element.
Claims24
A processing means, for use in a display system to display a picture in an eye box to a user, the processing means configured to:
- receive a signal indicative of a presence a polarizing element in the eye box;
- determine a corrective data set for the picture based on the signal, each data value of the corrective data set corresponding to a pixel of the picture;
- and
- output the corrective data set to the display system such that the picture is displayed based on the presence of the polarizing element.
The processing means according to any preceding claim, wherein the corrective data set is arranged to change at least one of a luminance profile of the picture and a colour balance of the picture.
A processing means as claim in any preceding claim wherein the signal is provided by a user-tracking system operating in a secondary mode of operation, wherein the primary mode of operation comprises user-tracking and the secondary mode of operating comprises detecting for the presence of the polarizing element.
A processing means as claimed in any preceding claim wherein the polarizing element in the eye-box is a pair of polarising glasses worn by the user.
A processing means as claimed in any preceding claim wherein determining the corrective data set comprises selecting the corrective data set from a plurality of different corrective data sets, optionally, wherein there are only two different corrective data sets.
A processing means as claimed in any preceding claim wherein the signal is indicative of the polarisation state of the light received by the user.
A processing means as claimed in any preceding claim further configured to:
- determine a hologram of the picture for display,
- wherein the processing means is arranged to apply the output corrective data set to an image data set representative of the picture prior to or during calculation of the hologram of the picture.
A user-tracking system comprising:
- a light system arranged to illuminate an eye-box of a head-up display system with non-visible light, wherein the light system further comprises a polarization selector arranged to determine a polarization state of the non-visible light illuminating the eye-box;
- a detection system arranged to form images of the eye-box using the non-visible light;
- and
- a controller arranged to operate the light system and detection system in a primary operating mode for detecting an eye-box position of a user and a secondary operating mode for detecting the presence or absence of a polarising element, such as polarising glasses, associated with the eye-box or user.
Dependencies are inferred from the claim text.