# US 2014/0192089 A1 · Projector system and control method thereof

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- Number: US 2014/0192089 A1
- Document ID: US20140192089A1
- Status: Published application
- Kind: A1
- Application number: 14/136,055
- Filed: 2013-12-20
- Published: 2014-07-10
- Earliest claimed: 2013-01-09
- Assignees: Seiko Epson Corporation
- Applicants: Seiko Epson Corporation
- Inventors: Yasuhiro HONDA; Takashi OZAWA
- Web page: https://patentgrep.com/patent/US20140192089A1

## CPC

- G06T 3/40: Scaling of whole images or parts thereof, e.g. expanding or contracting
- G03B 21/14: Details
- G06F 3/005: {Input arrangements through a video camera}
- G06F 3/0416: {Control or interface arrangements specially adapted for digitisers}
- G06F 3/0425: {using a single imaging device like a video camera for tracking the absolute position of a single or a plurality of objects with respect to an imaged reference surface, e.g. video camera imaging a display or a projection screen, a table or a wall surface, on which a computer generated image is displayed or projected (tracking a projected light spot to determine a position on a display surface G06F3/0386)}
- G06F 3/04845: for image manipulation, e.g. dragging, rotation, expansion or change of colour
- G06F 3/04883: for inputting data by handwriting, e.g. gesture or text
- G06T: IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G03B: APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR (optical parts of such apparatus G02B; photosensitive materials or processes for photographic purposes G03C; apparatus for processing exposed photographic materials G03D)
- G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N)

## Abstract

A projector system includes: a position detecting unit that detects a pointed position of a pointer on a projection surface; a drawing unit that performs drawing on the projection surface according to the pointed position detected by the position detecting unit; a height detecting unit that detects a height of a user of a projector; and a display changing unit that changes, according to the user's height detected by the height detecting unit, at least one of a shape of the image projected onto the projection surface and a display position of the image on the projection surface.

## Claims

### Claim 1

A projector system that modulates light from a light source via a modulating unit and projects an image onto a projection surface, comprising:
a position detecting unit that detects a pointed position of a pointer on the projection surface;
a drawing unit that performs drawing on the projection surface according to the pointed position detected by the position detecting unit;
a height detecting unit that detects a height of a user of a projector; and
a display changing unit that changes, according to the user's height detected by the height detecting unit, a shape of the image projected onto the projection surface or a display position of the image on the projection surface.

### Claim 2 (depends on 1)

The projector system according to claim 1, wherein
the display changing unit reduces the shape of the image.

### Claim 3 (depends on 2)

The projector system according to claim 2, wherein
the display changing unit reduces the shape of the image in a height direction.

### Claim 4 (depends on 1)

The projector system according to claim 1, wherein
the display changing unit moves the projection position of the image downward.

### Claim 5 (depends on 1)

The projector system according to claim 1, wherein
when the height detecting unit detects that the user does not exist, the display changing unit restores the changed image to its initial shape or its initial projection position.

### Claim 6 (depends on 1)

The projector system according to claim 1, wherein
the image is projected with a first area included therein, and
when the position detecting unit detects pointing performed on the first area of the image with the pointer, the display changing unit changes the shape of the image or the display position of the image on the projection surface according to a pointed position in the first area.

### Claim 7 (depends on 6)

The projector system according to claim 6, wherein
the image is projected with a second area included therein, and
when the position detecting unit detects pointing performed on the second area of the image with the pointer, the display changing unit restores the changed image to its initial shape or its initial projection position.

### Claim 8

A control method of a projector system that modulates light from a light source and projects an image onto a projection surface, comprising:
detecting a position pointed to by a pointer on the projection surface;
performing drawing on the projection surface according to the detected position;
detecting a user's height; and
changing, according to the detected user's height, a shape of the image projected onto the projection surface or a display position of the image on the projection surface.