# US 2014/0152676 A1 · Low latency image display on multi-display device

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- Number: US 2014/0152676 A1
- Document ID: US20140152676A1
- Status: Published application
- Kind: A1
- Application number: 13/691,255
- Filed: 2012-11-30
- Published: 2014-06-05
- Earliest claimed: 2012-11-30
- Inventors: Dave Rohn; Rod G. Fleck; Cynthia Sue Bell; Kevin Woo; Jeff Maybee; Timothy Osborne
- Web page: https://patentgrep.com/patent/US20140152676A1

## CPC

- G09G 5/003: {Details of a display terminal, the details relating to the control arrangement of the display terminal and to the interfaces thereto (specific for a CRT G09G1/165; for a flat panel G09G3/2092)}
- H04N 13/341: using temporal multiplexing
- H04N 13/344: with head-mounted left-right displays
- H04N 13/366: using viewer tracking
- G09G: ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION (arrangements for transferring data between digital computers and displays G06F3/14; static indicating arrangements comprising an association of a number of separate sources or light control cells G09F9/00; static indicating arrangements comprising integral associations of a number of light sources H01J, H01K, H10H, H05B33/12; scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission, details thereof H04N1/00)
- H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION

## Abstract

Embodiments are disclosed that relate to displaying images on multi-display devices with low latency. For example, one disclosed embodiment provides, on a display device comprising a first display and a second display, a method comprising receiving, processing a first image, and displaying the first image via the first display and not displaying the first image via the second display. The method further comprises receiving a second image, processing the second image while displaying the first image, and displaying the second image via the second display and not displaying the second image via the first display.

## Claims

### Claim 1

In a display device comprising a first display and a second display, a method of displaying images, the method comprising:
receiving a first image;
processing the first image;
displaying the first image via the first display and not displaying the first image via the second display;
receiving a second image;
processing the second image while displaying the first image; and
displaying the second image via the second display and not displaying the second image via the first display such that display of the second image is temporally offset from display of the first image.

### Claim 2 (depends on 1)

The method of claim 1, wherein displaying the first image via the first display comprises displaying the first image in a color field-sequential manner, and displaying the second image via the second display comprises displaying the second image in a color field-sequential manner.

### Claim 3 (depends on 1)

The method of claim 1, wherein displaying the first image via the first display comprises displaying the first image as an RBG image, and wherein displaying the second image via the second display comprises displaying the second image as an RGB image.

### Claim 4 (depends on 1)

The method of claim 1, wherein displaying the first image via the first display and not displaying the first image via the second display comprises sending the image to a first image producing element and not to a second producing element while illuminating the first image producing element and the second image producing element.

### Claim 5 (depends on 1)

The method of claim 1, wherein the display device comprises a head-mounted display, wherein the first image producing element is a left-eye image producing element, and wherein the second image producing element is a right-eye image producing element.

### Claim 6 (depends on 5)

The method of claim 5, wherein the left eye image and the right eye image comprise overlay images for an augmented reality see-through display.

### Claim 7 (depends on 1)

The method of claim 1, further comprising determining a visual direction via sensor data, and wherein processing the first image and processing the second image comprise rendering the first image and the second image based upon the visual direction determined.

### Claim 8 (depends on 1)

The method of claim 1, wherein displaying the first image via the first display and not displaying the first image via the second display comprises providing the first image to a first image producing element and to a second image producing element, and providing light to the first image producing element while not providing light to the second image producing element.

### Claim 9 (depends on 1)

The method of claim 1, wherein the first image is displayed beginning at a start of a 16 ms frame and the second image is displayed beginning at a later time within the 16 ms frame.

### Claim 10

A see-through head-mounted display device, comprising;
a graphics processor;
a left-eye display comprising a left-eye image producing element;
a right-eye display comprising a right-eye image producing element; and
a storage subsystem comprising instructions stored thereon that are executable to:
process a left-eye image via the graphics processor;
display the left-eye image via the left-eye display and not display the left-eye image via the right-eye display;
while displaying the left-eye image, process a right-eye image via the graphics processor; and
display the right-eye image via the right-eye display and not display the right-eye image via the left-eye display such that display of the right-eye image is temporally offset from display of the left-eye image.

### Claim 11 (depends on 10)

The device of claim 10, wherein the instructions are executable to display the left-eye image in a color field-sequential manner, and to display the right-eye image in a color field-sequential manner.

### Claim 12 (depends on 10)

The device of claim 10, wherein the instructions are executable to display the left-eye image as an RBG image, and to display the right-eye image as an RGB image.

### Claim 13 (depends on 10)

The device of claim 10, wherein the instructions are executable to display the left-eye image via the left-eye display and not via the right-eye display by sending the image to the left-eye image producing element and not to right-eye image producing element while illuminating the left-eye image producing element and the right-eye image producing element, and
wherein the instructions are executable to display the right-eye image via the right-eye display by sending the right-eye image to the right-eye image producing element and not to the left-eye image producing element while illuminating the left-eye image producing element and the right-eye image producing element.

### Claim 14 (depends on 10)

The device of claim 10, wherein the left-eye image producing element and the right-eye image producing element comprise LCOS image producing elements.

### Claim 15 (depends on 10)

The device of claim 10, wherein the instructions are executable to display the left-eye image via the left-eye display and not display the right-eye image via the right-eye display by providing the left-eye image to the left-eye image producing element and to the right-eye image producing element, and providing light to the left-eye image producing element while not providing light to the right-eye image producing element.

### Claim 16 (depends on 10)

The device of claim 10, wherein the instructions are executable to display the first image beginning at a start of a 16.67 ms frame and the second image beginning at a later time in the 16.67 ms frame.

### Claim 17

In a see-through head-mounted display device comprising a left-eye display having a left-eye image producing element and a right-eye display having a right-eye image producing element, a method of displaying images, the method comprising receiving at a graphics processor a left-eye image;
processing the left-eye image via the graphics processor;
sending the left-eye image to the left-eye image producing element image producing element while not sending the left-eye image to the right-eye image producing element;
providing light to the left-eye image producing element and to the right-eye image producing element;
receiving at the graphics processor a right-eye image;
while displaying the left-eye image via the left-eye image producing element, processing the right-eye image via the graphics processor;
sending the right-eye image to the right-eye image producing element while not sending the right-eye image to the left-eye image producing element; and
providing light to the right-eye image producing element and to the left-eye image producing element.

### Claim 18 (depends on 17)

The method of claim 17, further comprising displaying the left-eye image in a color field-sequential manner, and displaying the right-eye image in a color field-sequential manner.

### Claim 19 (depends on 10)

The method of claim 10, further comprising displaying the left-eye image and the right-eye image as RGB images.

### Claim 20 (depends on 17)

The method of claim 17, wherein the left-eye image producing element and the right-eye image producing element comprise LCOS image producing elements.
