# US 10,375,365 B2 · Projection system with enhanced color and contrast

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- Number: US 10,375,365 B2
- Document ID: US10375365B2
- Status: Granted
- Kind: B2
- Application number: 15/649,561
- Filed: 2017-07-13
- Published: 2017-10-26
- Granted: 2019-08-06
- Earliest claimed: 2014-02-07
- Assignees: Samsung Electronics Co., Ltd.
- Applicants: Samsung Electronics Co., Ltd.
- Inventors: Sergio Perdices-Gonzalez; Sajid Sadi; Ernest Rehmatulla Post
- Web page: https://patentgrep.com/patent/US10375365B2

## CPC

- H04N 9/3194: {including sensor feedback}
- G09G 3/002: {to project the image of a two-dimensional display, such as an array of light emitting or modulating elements or a CRT}
- G09G 3/2003: {Display of colours (specific for liquid crystal displays G09G3/3607)}
- G09G 3/2092: {Details of a display terminals using a flat panel, the details relating to the control arrangement of the display terminal and to the interfaces thereto (suitable for both CRT and flat panel G09G5/003; specific for a CRT G09G1/165)}
- G09G 3/2096: {Details of the interface to the display terminal specific for a flat panel (suitable for both CRT and flat panel G09G5/006; specific for a CRT G09G1/167)}
- G09G 3/32: semiconductive, e.g. using light-emitting diodes [LED]
- G09G 3/3208: organic, e.g. using organic light-emitting diodes [OLED]
- G09G 3/3225: using an active matrix
- G09G 3/348: {based on the deformation of a fluid drop, e.g. electrowetting}
- G09G 3/36: using liquid crystals
- H04N 9/643: {Hue control means, e.g. flesh tone control}
- H04N 9/73: Colour balance circuits, e.g. white balance circuits or colour temperature control (camera processing pipelines for colour balance H04N23/88)
- H04N 9/77: Circuits for processing the brightness signal and the chrominance signal relative to each other, e.g. adjusting the phase of the brightness signal relative to the colour signal, correcting differential gain or differential phase (circuits for matrixing H04N9/67)
- G09G 3/3446: {with more than two electrodes controlling the modulating element}
- G09G 2300/023: Display panel composed of stacked panels
- G09G 2300/0456: with a reflective area and a transmissive area combined in one pixel, such as in transflectance pixels
- G09G 2320/0626: for control of overall brightness
- G09G 2320/066: for control of contrast
- G09G 2320/0666: for control of colour parameters, e.g. colour temperature
- G09G 2320/0673: for control of gamma adjustment, e.g. selecting another gamma curve
- G09G 2330/021: Power management, e.g. power saving
- G09G 2354/00: Aspects of interface with display user
- G09G 2360/144: the light being ambient light
- H04N 9/69: for modifying the colour signals by gamma correction (controlling camera response for colour signals H04N23/83)
- H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION
- 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)

## Abstract

A system can include a projection layer. The projection layer can include a plurality of pixels. The plurality of pixels can be electronically controllable to vary appearance of at least one of the plurality of pixels in coordination with an image projected onto the projection layer.

## Claims

### Claim 1

A system, comprising:
a projection layer comprising an inner layer and an external layer, wherein the external layer is between the inner layer and a projector, wherein the projector is external to the projection layer and the projection layer is in front of the projector, the external layer including a plurality of pixels that is electronically controllable to vary appearance of at least one of the plurality of pixels in coordination with an image projected onto the projection layer from the projector;
wherein the inner layer is configured to display as a solid white surface and each pixel of the plurality of pixels of the external layer is individually addressable to be transparent, black, or grayscale; or
wherein the inner layer is configured to display as a solid black surface and each pixel of the plurality of pixels of the external layer is individually addressable to be transparent, white, or grayscale.

### Claim 2 (depends on 1)

The system of claim 1, wherein the projection layer displays at least a portion of the image in synchronization and alignment with the image projected onto the projection layer by varying the appearance of the at least one of the plurality of pixels.

### Claim 3 (depends on 1)

The system of claim 1, wherein the projection layer comprises at least one non-transparent display.

### Claim 4 (depends on 1)

The system of claim 1, wherein the projection layer comprises at least one transparent display.

### Claim 5 (depends on 4)

The system of claim 4, wherein the at least one transparent display is a liquid-crystal display, a liquid crystal display comprising Smectic A liquid crystals, a light-emitting diode display, a light enhanced layer, or an organic light-emitting diode display.

### Claim 6 (depends on 4)

The system of claim 4, wherein the transparent display is non-emissive.

### Claim 7 (depends on 6)

The system of claim 6, wherein the non-emissive display includes at least one pixel of the plurality of pixels that includes dye.

### Claim 8 (depends on 6)

The system of claim 6, wherein the non-emissive display is a polymer-dispersed liquid crystal display, an electrochromic display, an electro-dispersive display, a polymer stabilized liquid crystal display, an electrowetting display, a cholesteric liquid crystal display, or a liquid crystal display comprising Smectic A liquid crystals.

### Claim 9 (depends on 6)

The system of claim 6, wherein the non-emissive display includes at least one pixel of the plurality of pixels that does not include dye and appears substantially white.

### Claim 10 (depends on 1)

The system of claim 1, wherein the projection layer includes a plurality of non-emissive and transparent displays.

### Claim 11 (depends on 1)

The system of claim 1, wherein the projection layer includes a sensor facing outward from a surface of the projection layer toward the projector, wherein the sensor is configured to detect light corresponding, at least in part, to the projected image and the plurality of pixels is electronically controllable based, at least in part, upon the light detected by the sensor.

### Claim 12 (depends on 1)

The system of claim 1, wherein the projection layer includes a camera facing outward from a surface of the projection layer toward the projector and a processor configured to recognize presence of a user in image data from the camera, and wherein the plurality of pixels is electronically controllable based, at least in part, upon the recognized presence of the user.

### Claim 13 (depends on 12)

The system of claim 12, wherein the processor is configured to perform at least one of facial recognition or gaze detection, and wherein the plurality of pixels is electronically controllable based, at least in part, upon the facial recognition or gaze detection.

### Claim 14 (depends on 12)

The system of claim 12, wherein the processor is configured to determine location of the user relative to the projection layer based on the image data, and wherein the plurality of pixels is electronically controllable by the processor based, at least in part, upon the location of the user.

### Claim 15 (depends on 1)

The system of claim 1, wherein the projector includes a camera configured to capture image data of the image projected on the projection layer, wherein the projector is configured to adjust the image projected on the projection layer based upon the image data from the camera.

### Claim 16

A method, comprising:
providing a projection layer comprising an inner layer and an external layer between the inner layer and a projector, wherein the projector is external to the projection layer and the projection layer is in front of the projector, the external layer including a plurality of pixels that is electronically controllable to vary appearance of at least one of the plurality of pixels in coordination with an image projected onto the projection layer from the projector;
wherein the inner layer is configured to display as a solid white surface and each pixel of the plurality of pixels of the external layer is individually addressable to be transparent, black, or grayscale; or
wherein the inner layer is configured to display as a solid black surface and each pixel of the plurality of pixels of the external layer is individually addressable to be transparent, white, or grayscale.

### Claim 17 (depends on 16)

The method of claim 16, wherein the projection layer displays at least a portion of the image in synchronization and alignment with the image projected onto the projection layer by varying the appearance of the at least one of the plurality of pixels.

### Claim 18 (depends on 16)

The method of claim 16, wherein the projection layer comprises at least one transparent display.

### Claim 19 (depends on 18)

The method of claim 18, wherein the at least one transparent display is a liquid-crystal display, a liquid crystal display comprising Smectic A liquid crystals, a light-emitting diode display, a light enhanced layer, or an organic light-emitting diode display.

### Claim 20 (depends on 18)

The method of claim 18, wherein the transparent display is non-emissive.

### Claim 21 (depends on 20)

The method of claim 20, wherein the non-emissive display includes at least one pixel of the plurality of pixels that includes dye.

### Claim 22 (depends on 20)

The method of claim 20, wherein the non-emissive display is a polymer-dispersed liquid crystal display, an electrochromic display, an electro-dispersive display, a polymer stabilized liquid crystal display, an electrowetting display, a cholesteric liquid crystal display, or a liquid crystal display comprising Smectic A liquid crystals.

### Claim 23 (depends on 20)

The method of claim 20, wherein the non-emissive display includes at least one pixel of the plurality of pixels that does not include dye and appears substantially white.

### Claim 24 (depends on 16)

The method of claim 16, wherein the projection layer includes a plurality of non-emissive and transparent displays.

### Claim 25 (depends on 16)

The method of claim 16, wherein the projection layer includes a sensor facing outward from a surface of the projection layer toward the projector, wherein the sensor is configured to detect light corresponding, at least in part, to the projected image and the plurality of pixels is electronically controllable based, at least in part, upon the light detected by the sensor.

### Claim 26 (depends on 16)

The method of claim 16, wherein the projection layer includes a camera facing outward from a surface of the projection layer toward the projector and a processor configured to recognize presence of a user in image data from the camera, and wherein the plurality of pixels is electronically controllable based, at least in part, upon the recognized presence of the user.

### Claim 27 (depends on 26)

The method of claim 26, wherein the processor is configured to perform at least one of facial recognition or gaze detection, and wherein the plurality of pixels is electronically controllable based, at least in part, upon the facial recognition or the gaze detection.

### Claim 28 (depends on 26)

The method of claim 26, wherein the processor is configured to determine location of the user relative to the projection layer based on the image data, and wherein the plurality of pixels is electronically controllable by the processor based, at least in part, upon the location of the user.

### Claim 29 (depends on 16)

The method of claim 16, further comprising:
providing a camera configured to capture image data of the image projected on the projection layer, wherein the projector is configured to adjust the image projected on the projection layer based upon the image data from the camera.

### Claim 30

A method, comprising:
controlling a plurality of pixels of a projection layer to vary appearance of at least one of the plurality of pixels in coordination with an image projected onto the projection layer from a projector, wherein the projector is external to the projection layer and the projection layer is in front of the projector;
wherein the projection layer includes an inner layer configured to display as a solid white surface and an external layer between the inner layer and the projector and having individually addressable pixels of the plurality of pixels, wherein the controlling includes controlling each of the individually addressable pixels of the plurality of pixels to be transparent, black, or grayscale; or
wherein the projection layer includes an inner layer that is configured to display as a solid black surface and an external layer between the inner layer and the projector and having individually addressable pixels of the plurality of pixels, wherein the controlling includes controlling each of the individually addressable pixels of the plurality of pixels to be transparent, white, or grayscale.

### Claim 31 (depends on 30)

The method of claim 30, wherein the plurality of pixels is electronically controllable to display at least a portion of the image in synchronization and alignment with the image projected onto the projection layer by varying the appearance of the at least one of the plurality of pixels.

### Claim 32 (depends on 30)

The method of claim 30, further comprising:
detecting light corresponding, at least in part, to the projected image, using a sensor of the projection layer, wherein the sensor is facing outward from a surface of the projection layer toward the projector;
wherein the plurality of pixels is electronically controllable based, at least in part, upon the light detected by the sensor.

### Claim 33 (depends on 30)

The method of claim 30, further comprising:
detecting, using a camera facing outward from a surface of the projection layer toward the projector, a presence of a user;
wherein the plurality of pixels is electronically controllable based, at least in part, upon the presence of the user.

### Claim 34 (depends on 33)

The method of claim 33, further comprising:
detecting location of the user in relation to the projection layer using the camera;
wherein the plurality of pixels is electronically controllable based, at least in part, upon the location of the user.