# US 11,907,416 B1 · Compensating for high head movement in head-mounted displays

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- Number: US 11,907,416 B1
- Document ID: US11907416B1
- Status: Granted
- Kind: B1
- Application number: 18/181,615
- Filed: 2023-03-10
- Published: 2023-10-05
- Granted: 2024-02-20
- Earliest claimed: 2017-04-24
- Assignees: Intel Corporation
- Applicants: Intel Corporation
- Inventors: Ravindra A. Babu; Sashank Ms; Satyanantha R. Musunuri; Sagar C. Pawar; Kalyan K. Kaipa; Vijayakumar Balakrishnan; Sameer Kp
- Web page: https://patentgrep.com/patent/US11907416B1

## CPC

- G06F 3/012: {Head tracking input arrangements}
- G02B 27/017: {Head mounted}
- G06F 3/017: {Gesture based interaction, e.g. based on a set of recognized hand gestures (interaction based on gestures traced on a digitiser G06F3/04883)}
- G06T 1/20: Processor architectures; Processor configuration, e.g. pipelining
- G02B 2027/0147: {comprising a device modifying the resolution of the displayed image}
- G06F 3/011: {Arrangements for interaction with the human body, e.g. for user immersion in virtual reality (blind teaching G09B21/00)}
- G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N)
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G06T: IMAGE DATA PROCESSING OR GENERATION, IN GENERAL

## Abstract

When the speed of head movement exceeds the processing capability of the system, a reduced depiction is displayed. As one example, the resolution may be reduced using coarse pixel shading in order to create a new depiction at the speed of head movement. In accordance with another embodiment, only the region the user is looking at is processed in full resolution and the remainder of the depiction is processed at lower resolution. In still another embodiment, the background depictions may be blurred or grayed out to reduce processing time.

## Claims

### Claim 1

A graphics processing unit, comprising:
a plurality of texture units,
a shared memory coupled to the plurality of texture units,
a plurality of register files coupled to the shared memory,
a plurality of load/store units coupled to the shared memory, and
a plurality of graphics processing cores coupled to the plurality of register files,
wherein at least one of the plurality of graphics processing cores is to:
receive information to identify a first portion of a frame based on eye gaze detection,
apply a first non-normalized shading rate within the first portion of the frame, and
apply a second non-normalized shading rate within at least a second portion of the frame, wherein the first non-normalized shading rate is twice the second non-normalized shading rate.

### Claim 2 (depends on 1)

The graphics processing unit of claim 1, further comprising scheduler logic to schedule groups of instructions.

### Claim 3 (depends on 1)

The graphics processing unit of claim 1, further comprising a plurality of arithmetic logic units coupled to the plurality of register files, wherein the plurality of arithmetic logic units are to perform operations on integer data types.

### Claim 4 (depends on 1)

The graphics processing unit of claim 1, further comprising at least one memory unit.

### Claim 5 (depends on 4)

The graphics processing unit of claim 4, wherein the at least one memory unit comprises a load and store unit.

### Claim 6 (depends on 1)

The graphics processing unit of claim 1, further comprising at least one special function unit.

### Claim 7 (depends on 1)

The graphics processing unit of claim 1, wherein the graphics processing unit comprises a single instruction multiple thread processor.

### Claim 8 (depends on 1)

The graphics processing unit of claim 1, further comprising an interface to communicate with a headset.

### Claim 9 (depends on 8)

The graphics processing unit of claim 8, wherein the interface is to receive motion tracking information from the headset.

### Claim 10

A graphics processing unit, comprising:
a plurality of texture units,
a shared memory coupled to the plurality of texture units,
a plurality of register files coupled to the shared memory,
a plurality of load/store units coupled to the shared memory, and
a plurality of graphics processing cores coupled to the plurality of register files,
wherein at least one of the plurality of graphics processing cores is to:
receive information to identify a portion of a frame as a foveated region, based on eye gaze detection,
shade the foveated region at a first shading rate, and
shade another region of the frame at a second shading rate, wherein the second shading rate is half of the first shading rate and the first shading rate and the second shading rate are non-normalized rates.

### Claim 11 (depends on 10)

The graphics processing unit of claim 10, further comprising a plurality of arithmetic logic units coupled to the plurality of register files, wherein the plurality of arithmetic logic units are to perform operations on integer data types.

### Claim 12 (depends on 10)

The graphics processing unit of claim 10, further comprising at least one memory unit.

### Claim 13 (depends on 12)

The graphics processing unit of claim 12, wherein the at least one memory unit comprises a load and store unit.

### Claim 14 (depends on 10)

The graphics processing unit of claim 10, further comprising at least one special function unit.

### Claim 15 (depends on 10)

The graphics processing unit of claim 10, wherein the graphics processing unit comprises a single instruction multiple thread processor.

### Claim 16 (depends on 10)

The graphics processing unit of claim 10, further comprising an interface to communicate with a headset.

### Claim 17 (depends on 16)

The graphics processing unit of claim 16, wherein the interface is to receive motion tracking information from the headset.

### Claim 18

A graphics processor comprising:
a plurality of texture units,
a shared memory coupled to the plurality of texture units,
a plurality of register files coupled to the shared memory,
a plurality of load/store units coupled to the shared memory, and
a plurality of graphics processing cores coupled to the plurality of register files,
wherein at least one of the plurality of graphics processing cores is to:
receive information to identify a first portion of a frame based on eye gaze detection,
apply a first non-normalized shading rate within the first portion of the frame,
apply a second non-normalized shading rate within at least a second portion of the frame, wherein the first non-normalized shading rate is twice the second non-normalized shading rate,
transfer the first portion of the frame to a head-mounted display as a first surface, and
transfer the second portion of the frame to the head-mounted display as a second surface.

### Claim 19 (depends on 18)

The graphics processor of claim 18, further comprising an interface to communicate with the head-mounted display.

### Claim 20 (depends on 19)

The graphics processor of claim 19, wherein the at least one of the plurality of graphics processing cores is to receive motion tracking information from the head-mounted display.
