Device for displaying an image sequence and system for displaying a scene

Patent metadata

Field	Value
Publication number	US-10154235-B2
Application number	US-201515128996-A
Country	US
Kind code	B2
Filing date	Mar 12, 2015
Priority date	Mar 26, 2014
Publication date	Dec 11, 2018
Grant date	Dec 11, 2018

Abstract

A device for displaying an image sequence in the form of a pixel matrix, includes a control unit coupled to a projector. The control unit includes an input interface designed to receive asynchronous information representing, for each pixel of the matrix, events concerning the pixel, and a processor designed to control the activation of each pixel of the matrix at moments determined by the respective events indicated by the asynchronous information for the pixel. The projector is disposed on a support so as to illuminate the light receptors of the eye when the device is in use and is designed to project a light flux corresponding to the pixels activated by the control unit.

First claim

The invention claimed is:

1. Device for displaying a sequence of images in the form of a matrix of pixels, comprising a control unit coupled operationally to a projector, the control unit comprising
an input interface configured so as to receive asynchronous information representing, for each pixel in the matrix, events concerning the pixel; and
a processor configured so as to demand the activation of each pixel in the matrix at instants determined by respective events indicated by the asynchronous information for said pixel;
in which the projector is arranged on a support so as to illuminate photoreceptors of the eye during the use of a device, and configured to project a light stream relative to the pixels activated by the control unit,
wherein the control unit is further configured so as, after activation of a pixel in the matrix at an instant determined by an event indicated by the asynchronous information, to repeat the command for activation of said pixel substantially at the same activation level at instants defined by a refresh sequence.

2. The device according to claim 1 , in which the projector comprises a matrix of micromirrors, a unit controlling the matrix of micromirrors, a control input for receiving the pixel-activation commands, and an optical input for receiving a light stream.

3. The device according to claim 1 , in which the projector support is in the form of a pair of spectacles, the projector being placed on a surface of the spectacles.

4. System for displaying a scene, comprising a display sub-system coupled operationally to an acquisition sub-system, in which:
the display sub-system comprises a device according to claim 1 ;
the acquisition sub-system comprises a sensor disposed opposite the scene, coupled operationally to a processing unit configured so as to generate asynchronous information representing events for each pixel.

5. The system according to claim 4 , in which the sensor is a light sensor comprising a optic for acquiring the scene and a matrix of photosensitive elements.

6. The system according to claim 4 , in which the sensor is mounted on the projector support so that the captured scene corresponds substantially to the visual field of a user of the device.

7. The system according to claim 4 , in which:
the projector support is in the form of a pair of spectacles,
the projector is mounted on a first surface of the spectacles;
the sensor is mounted on a top part of the spectacles frame;
the control unit of the device and the processing unit of the acquisition sub-system are mounted on a second surface of the spectacles.

8. The system according to claim 4 , in which:
the projector support is in the form of a pair of spectacles,
the projector is mounted on a first surface of the spectacles;
the sensor, the control unit of the device and the processing unit of the acquisition sub-system are mounted on a second surface of the spectacles.

Assignees

• Univ Pierre Et Marie Curie Paris 6
• Centre National De La Rech Scientifique—Cnrs
• Centre Nat Rech Scient

Inventors

• Benosman Ryad
• Chenegros Guillaume
• Picaud Serge
• Ieng Siohoi
• Sahel Jose-Alain

Classifications

• A61B5/6821 Primary

  Eye · CPC title

• G02B2027/0178

  Eyeglass type (eyeglass details G02C) · CPC title

• G02B2027/014

  comprising information/image processing systems · CPC title

• G02B27/017

  Head mounted · CPC title

• H04N9/312 Primary

  Driving therefor (driving of electronic spatial light modulators in displays other than projection devices G09G3/34, G09G3/36; control of liquid crystal elements G02F1/133; control of micromechanical modulators G02B26/08) · CPC title