# US 2014/0192047 A1 · Stereoscopic image display device, image processing device, and image processing method

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 2014/0192047 A1
- Document ID: US20140192047A1
- Status: Published application
- Kind: A1
- Application number: 14/208,726
- Filed: 2014-03-13
- Published: 2014-07-10
- Earliest claimed: 2011-11-15
- Assignees: Kabushiki Kaisha Toshiba
- Applicants: Kabushiki Kaisha Toshiba
- Inventors: Nao MISHIMA; Takeshi MITA
- Web page: https://patentgrep.com/patent/US20140192047A1

## CPC

- G02B 30/30: involving parallax barriers
- G06T 15/00: Three-dimensional [3D] image rendering
- G02B 30/27: involving lenticular arrays
- H04N 13/305: using lenticular lenses, e.g. arrangements of cylindrical lenses
- H04N 13/31: using parallax barriers
- H04N 13/317: using slanted parallax optics
- H04N 13/351: for displaying simultaneously
- H04N 13/373: for tracking forward-backward translational head movements, i.e. longitudinal movements
- H04N 13/398: Synchronisation thereof; Control thereof
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G06T: IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION

## Abstract

According to an embodiment, a stereoscopic image display device includes a display, a determiner, a generator, and a display controller. The display is configured to display a stereoscopic image which includes a plurality of parallax images having mutually different parallaxes. The determiner is configured to determine the number of parallaxes in such a way that, the larger a viewing distance from the display to a viewer, the smaller becomes the interval between light beams which belong to each of the parallax images and which are emitted from the display. The generator is configured to generate the parallax images in number corresponding to the number of parallaxes. The display controller is configured to display the parallax images on the display.

## Claims

### Claim 1

A stereoscopic image display device comprising:
a display configured to display a stereoscopic image which includes a plurality of parallax images having mutually different parallaxes;
a determiner configured to determine the number of parallaxes in such a way that, larger a viewing distance from the display to a viewer, smaller becomes the interval between light beams which belong to each of the parallax images and which are emitted from the display;
a generator configured to generate the parallax images in number corresponding to the number of parallaxes; and
a display controller configured to display the parallax images on the display.

### Claim 2 (depends on 1)

The device according to claim 1, wherein
the display includes a display element, in which pixels are arranged in a matrix-like manner, and includes a light beam control element, which controls the travelling direction of light beams emitted from the display element,
the device further comprises:
a first acquirer configured to acquire tilt information which indicates a relative tilt between the display element and the light beam control element,
a second acquirer configured to acquire the viewing distance, and
the determiner determines the number of parallaxes based on the tilt information and the viewing distance.

### Claim 3 (depends on 2)

The device according to claim 2, wherein, the determiner
calculates, using the tilt information and the viewing distance, an interval between light beams of each of the parallax images at a position that is away from the display by a distance equal to the viewing distance, and
determines the number of parallaxes in such a way that the calculated interval has a value which enables the viewer to view the stereoscopic image.

### Claim 4 (depends on 3)

The device according to claim 3, wherein the determiner determines the number of parallaxes in such a way that the calculated interval is equal to or smaller than an interocular distance indicating the distance between eyes of the viewer.

### Claim 5 (depends on 1)

The device according to claim 1, wherein the determiner determines the number of parallaxes in such a way that, larger the viewing distance, larger becomes the number of parallaxes.

### Claim 6 (depends on 1)

The device according to claim 1, wherein at least the determiner, the generator, and the display controller are implemented as a processor.

### Claim 7

An image processing device comprising:
a determiner configured to determine the number of parallaxes in such a way that, larger a viewing distance between a viewer and a display that is capable of displaying a stereoscopic image which includes a plurality of parallax images having mutually different parallaxes, smaller becomes the interval between light beams which belong to each of the parallax images and which are emitted from the display;
a generator configured to generate the parallax images in number corresponding to the number of parallaxes; and
a display controller configured to display the parallax images on the display.

### Claim 8

An image processing method comprising:
determining the number of parallaxes in such a way that, larger a viewing distance between a viewer and a display that is capable of displaying a stereoscopic image which includes a plurality of parallax images having mutually different parallaxes, smaller becomes the interval between light beams which belong to each of the parallax images and which are emitted from the display;
generating the parallax images in number corresponding to the number of parallaxes; and
displaying the generated parallax images on the display.