# US 10,455,157 B2 · Display device and control method for display device

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- Number: US 10,455,157 B2
- Document ID: US10455157B2
- Status: Granted
- Kind: B2
- Application number: 15/895,455
- Filed: 2018-02-13
- Published: 2018-08-30
- Granted: 2019-10-22
- Earliest claimed: 2017-02-27
- Assignees: Seiko Epson Corporation
- Applicants: Seiko Epson Corporation
- Inventors: Emi Ozawa; Shinichi Kobayashi; Masahide Takano
- Web page: https://patentgrep.com/patent/US10455157B2

## CPC

- H04N 23/63: by using electronic viewfinders
- G02B 27/017: {Head mounted}
- G02B 27/0172: {characterised by optical features}
- G05D 1/0016: {characterised by the operator's input device (input arrangements for computing systems in general G06F3/00)}
- G05D 1/0038: {by providing the operator with simple or augmented images from one or more cameras located onboard the vehicle, e.g. tele-operation (images analyzed by a computer and used for automatic navigation G05D1/0246)}
- G06F 3/00: Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F 3/147: using display panels
- 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 5/14: Display of multiple viewports
- H04N 5/445: for displaying additional information (H04N5/50 takes precedence)
- H04N 7/185: {from a mobile camera, e.g. for remote control}
- H04N 13/239: using two two-dimensional [2D] image sensors having a relative position equal to or related to the interocular distance (H04N13/243 takes precedence)
- H04N 13/243: using three or more two-dimensional [2D] image sensors
- H04N 13/344: with head-mounted left-right displays
- H04N 23/60: Control of cameras or camera modules
- G02B 2027/0118: {comprising devices for improving the contrast of the display / brillance control visibility}
- G02B 2027/0138: {comprising image capture systems, e.g. camera}
- G02B 2027/014: {comprising information/image processing systems}
- G02B 2027/0178: {Eyeglass type (eyeglass details G02C)}
- G02B 2027/0187: {slaved to motion of at least a part of the body of the user, e.g. head, eye}
- G05D 1/102: {specially adapted for vertical take-off of aircraft}
- G09G 2360/144: the light being ambient light
- H04N 5/45: Picture in picture {, e.g. displaying simultaneously another television channel in a region of the screen}
- H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G05D: SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N)
- 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

An HMD includes an image display section configured to display an image to enable visual recognition of an outside scene by transmitting external light, a mobile-body-position acquiring section configured to acquire a position of a mobile machine, an operation detecting section configured to detect operation, and a display control section configured to cause the image display section to display the image. The display control section executes visibility control processing for controlling, on the basis of the position of the mobile machine acquired by the mobile-body-position acquiring section and the operation detected by the operation detecting section, visibility of the image displayed by the image display section with respect to the external light transmitted through the image display section.

## Claims

### Claim 1

A display device comprising:
a display section configured to display an image to enable visual recognition of an outside scene by transmitting external light;
a mobile-body-position acquiring section configured to acquire a position of a mobile body;
an operation detecting section configured to detect operation; and
a display control section configured to cause the display section to display the image, wherein
the display control section executes visibility control processing for controlling, on the basis of the position of the mobile body acquired by the mobile-body-position acquiring section and the operation detected by the operation detecting section, visibility of the image displayed by the display section with respect to the external light transmitted through the display section.

### Claim 2 (depends on 1)

The display device according to claim 1, further comprising an image acquiring section configured to acquire image data concerning a captured image captured by the mobile body, wherein
the display control section causes the display section to display an image based on the image data acquired by the image acquiring section.

### Claim 3 (depends on 2)

The display device according to claim 2, wherein
the image acquiring section acquires a plurality of the image data concerning respective captured images captured by a plurality of the mobile bodies, and
the display control section causes the display section to display a plurality of the images based on the plurality of image data acquired by the image acquiring section and controls visibilities of the plurality of images with the visibility control processing.

### Claim 4 (depends on 3)

The display device according to claim 3, wherein the display control section executes the visibility control processing to reduce differences among the visibilities of the plurality of images displayed by the display section on the basis of the plurality of image data acquired by the image acquiring section.

### Claim 5 (depends on 4)

The display device according to claim 4, wherein the display control section executes the visibility control processing to set visibilities of a part of the images higher than visibilities of the other images among the plurality of images displayed by the display section on the basis of the plurality of image data acquired by the image acquiring section.

### Claim 6 (depends on 1)

The display device according to claim 1, wherein
the mobile-body-position acquiring section acquires a visual recognition position where the mobile body in a real space is visually recognized through the display section, and
the display control section executes the visibility control processing according to the visual recognition position of the mobile body acquired by the mobile-body-position acquiring section.

### Claim 7 (depends on 6)

The display device according to claim 6, wherein the display control section causes the display section to display an image associated with the mobile body in a position corresponding to the visual recognition position of the mobile body.

### Claim 8 (depends on 1)

The display device according to claim 1, wherein the mobile-body-position acquiring section acquires a relative position of the mobile body with respect to the display section.

### Claim 9 (depends on 1)

The display device according to claim 1, wherein the display control section causes the display section to display information indicating the position of the mobile body acquired by the mobile-body-position acquiring section.

### Claim 10 (depends on 1)

The display device according to claim 1, wherein the display control section causes the display section to display the image on the basis of image data, is capable of executing at least any one of luminance adjustment, color tone adjustment, and gamma correction for the image data, and changes at least anyone of luminance, a color tone, and a gamma correction value of the image data in the visibility control processing.

### Claim 11 (depends on 1)

The display device according to claim 1, wherein the display control section executes the visibility control processing to thereby switch, according to the operation detected by the operation detecting section, a first mode for setting visibility of the outside scene visually recognized through the display section higher than visibility of the image displayed by the display section and a second mode for increasing the visibility of the image displayed by the display section with respect to the external light transmitted through the display section.

### Claim 12 (depends on 1)

The display device according to claim 1, further comprising an external-light detecting section configured to detect the external light, wherein
the display control section executes the visibility control processing according to the external light detected by the external-light detecting section.

### Claim 13 (depends on 1)

The display device according to claim 1, wherein the display device is a head-mounted display device including the display section worn on a head of a user.

### Claim 14

A control method for a display device including a display section configured to display an image to enable visual recognition of an outside scene by transmitting external light, the control method comprising:
acquiring a position of a mobile body;
detecting operation; and
causing the display section to display an image and executing visibility control processing for controlling, on the basis of the position of the mobile body and the operation, visibility of the image displayed by the display section with respect to the external light transmitted through the display section.