Automatic perspective correction for in-flight entertainment (IFE) monitors

Patent metadata

Field	Value
Publication number	US-11615542-B2
Application number	US-201916684540-A
Country	US
Kind code	B2
Filing date	Nov 14, 2019
Priority date	Nov 14, 2019
Publication date	Mar 28, 2023
Grant date	Mar 28, 2023

Abstract

Disclosed embodiments are directed at devices, methods, and systems for fixing distortions of content displayed on in-flight entertainment (IFE) monitors in a commercial passenger vehicle. An IFE monitor can receive angular measurement data from one or more gyroscope sensors to determine a differential angle of tilt of the IFE monitor. In response to determining that the differential angle of tilt is non-zero, the IFE monitor can detect that content displayed on the IFE monitor is subject to distortion. The IFE monitor can automatically apply a perspective correction to the content displayed on the IFE monitor for fixing the perceived distortion.

First claim

We claim:

1. A method of fixing distortions to content displayed on in-flight entertainment (IFE) monitors in a commercial passenger vehicle comprising:
receiving, by a processor of an IFE monitor, a first angular information from a first gyroscope sensor and a second angular information from a second gyroscope sensor located within the commercial passenger vehicle;
detecting, by the processor of the IFE monitor, an occurrence of a distortion-causing event based on determining a differential angle of tilt between the first angular information and the second angular information;
in response to detecting the distortion-causing event, computing, by the processor of the IFE monitor, a perspective correction applicable to a content displayed on the IFE monitor; and
automatically applying, by the processor of the IFE monitor, the perspective correction to the content displayed on the IFE monitor, wherein the perspective correction preserves an aspect ratio of the content displayed on the IFE monitor responsive to and based on the differential angle of tilt.

2. The method of claim 1 , wherein the IFE monitor is a first IFE monitor, wherein the distortion-causing event corresponds to an incline or a recline of a passenger seat, and wherein the method further comprises
receiving, from the first gyroscope sensor included in the first IFE monitor, the first angular information; and
receiving, from the second gyroscope sensor included in a second IFE monitor that is different from the first IFE monitor, the second angular information.

3. The method of claim 1 , further comprising:
upon applying the perspective correction to the content displayed on the IFE monitor, the IFE monitor waits for a time interval before receiving subsequent sensor information.

4. The method of claim 1 , further comprising:
computing the differential angle of tilt, using the first angular information and the second angular information; and
electronically computing the perspective correction based on the differential angle of tilt, wherein the electronically computing is without a use of a mechanical structure.

5. The method of claim 1 , wherein the distortion-causing event corresponds to a recline of a passenger seat, wherein receiving the first angular information from the first sensor includes:
receiving, by the processor of the IFE monitor, an angle of the recline of the passenger seat with respect to an upright position of the passenger seat, wherein the angle of the recline is that of the passenger seat associated with the IFE monitor.

6. The method of claim 1 , wherein the IFE monitor is a first IFE monitor, and-wherein receiving the first angular information and the second angular information includes:
receiving, at the first IFE monitor, a first angle of recline of a passenger seat with respect to an upright position of the passenger seat, wherein the first angle of recline is that of the passenger seat associated with the first IFE monitor, and further wherein the first gyroscope sensor is included in the first IFE monitor; and
receiving, from a second IFE monitor different from the first IFE monitor, a second angle of recline of another passenger seat with respect to an upright position of the another passenger seat, wherein the second gyroscope sensor is included in the second IFE monitor.

7. The method of claim 1 , wherein the IFE monitor is a first IFE monitor, and wherein receiving the first angular information and the second angular information includes:
receiving, at the first IFE monitor, a first angle of a rotation of the commercial passenger vehicle with respect to a roll axis of the commercial passenger vehicle, wherein the first angle of rotation is measured by the first gyroscope sensor included in the first IFE monitor; and
receiving, from a second IFE monitor different from the first IFE monitor, a second angle of a rotation of the commercial passenger vehicle with respect to a roll axis of the commercial passenger vehicle, wherein the second angle of rotation is measured by the second gyroscope sensor included in the second IFE monitor.

8. The method of claim 1 , wherein the first angular information is further received from a thermal imaging camera, an eyeball tracking sensor, or a combination thereof.

9. The method of claim 1 , wherein the perspective correction is one of a horizontal perspective correction, a vertical perspective correction, or a combination perspective.

10. A system for fixing perceived distortions to content displayed on in-flight entertainment (IFE) monitors in a commercial passenger vehicle comprising:
a first IFE monitor located in the commercial passenger vehicle, the first IFE monitor configured to:
receive a first angular measurement data from a first gyroscope sensor and a second angular measurement data from a second gyroscope sensor, wherein the first gyroscope sensor is included in the first IFE monitor and the second gyroscope sensor is associated with a second IFE monitor located in the commercial passenger vehicle;
compute, using the first angular measurement data and the second angular measurement data, a differential angle of tilt;
in response to determining that the differential angle of tilt is non-zero, detect that a content displayed on the first IFE monitor is subject to a perceived distortion; and
automatically apply a perspective correction to the content displayed on the first IFE monitor for fixing the perceived distortion, wherein the perspective correction is based on the differential angle of tilt and preserves an aspect ratio of the content displayed on the first IFE monitor; and

the second IFE monitor located in the commercial passenger vehicle, the second IFE monitor configured to:
receive the second angular measurement data measured by the second gyroscope sensor; and

communicate the second angular measurement data to the first IFE monitor.

11. The system of claim 10 , wherein the first IFE monitor is further configured to:
upon applying the perspective correction to the content displayed on the first IFE monitor, wait for a time interval before receiving subsequent angular measurement data.

12. The system of claim 10 , wherein the first IFE monitor is further configured to:
electronically compute the perspective correction based on the differential angle of tilt associated with the first IFE monitor, wherein the electronically computing is without a use of a mechanical structure.

13. The system of claim 10 , wherein the first IFE monitor is located at a bulk head region of the commercial passenger vehicle and the second IFE monitor is located at a back of a passenger seat.

14. The system of claim 10 , wherein the first IFE monitor is located at a back of a first passenger seat and the second IFE monitor is located at a back of a second passenger seat.

15. The system of claim 10 , wherein the second IFE monitor is located behind the first IFE monitor with respect to a front of the commercial passenger vehicle.

16. The system of claim 15 , wherein the second IFE monitor is located immediately behind the first IFE monitor.

17. A non-transitory, computer-readable storage medium storing instructions that, when executed by a computing system associated with an in-flight entertainment (IFE) monitor, cause the IFE monitor to perform operations for automatic corrections of distortions to content displayed on the IFE monitor, the operations at the IFE monitor comprising:
receiving a first angular measurement data from a first gyroscope sensor and a second angular measurement data from a second gyroscope sensor that

Assignees

• Panasonic Avionics Corp

Inventors

• Shah Shrenik
• Jiang Feng

Classifications

• B64D11/00151

  Permanently mounted seat back monitors · CPC title

• G06F17/13

  Differential equations (using digital differential analysers G06F7/64) · CPC title

• G09G2340/04

  Changes in size, position or resolution of an image · CPC title

• B64D11/00153

  Monitors mounted on or in the seat other than the seat back · CPC title

• G06T7/536 Primary

  from perspective effects, e.g. by using vanishing points · CPC title