# US 11,908,354 B2 · Control device, projection apparatus, control method, and control program

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

- Number: US 11,908,354 B2
- Document ID: US11908354B2
- Status: Granted
- Kind: B2
- Application number: 17/680,752
- Filed: 2022-02-25
- Published: 2022-06-09
- Granted: 2024-02-20
- Earliest claimed: 2019-08-30
- Assignees: FUJIFILM Corporation
- Applicants: FUJIFILM Corporation
- Inventors: Kazuki Inoue; Akihiro Ishizuka; Tomonori Masuda; Kazuki Ishida
- Web page: https://patentgrep.com/patent/US11908354B2

## CPC

- 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}
- H04N 9/3182: {Colour adjustment, e.g. white balance, shading or gamut (white balance per se H04N9/73; control of amplitude of colour signals H04N9/68; colour control circuits for displays in general G09G5/02, G09G3/2003, G09G3/3607)}
- G03B 21/142: {Adjusting of projection optics}
- G03B 21/28: Reflectors in projection beam {(in illumination beam G03B21/2066)}
- H04N 9/3188: {Scale or resolution adjustment (scaling in general G06T3/40; resolution modifying circuits for displays in general G09G5/391)}
- G09G 2320/0666: for control of colour parameters, e.g. colour temperature
- G09G 2340/04: Changes in size, position or resolution of an image
- G09G 2340/0464: Positioning
- 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)
- H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION
- 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)

## Abstract

A system control portion generates corrected image data by performing reduction processing of reducing input image data input into a display portion at a first reduction rate and image shifting processing of shifting positions of R image data and B image data of a specific color component included in reduced image data obtained by the reduction processing. The system control portion projects a corrected image based on the corrected image data to a screen by inputting the corrected image data into the display portion.

## Claims

### Claim 1

A control device of a projection apparatus that projects an image from a display portion displaying the image to a projection object through an optical system, the control device comprising:
a processor configured to
generate corrected image data by performing correction processing including reduction processing of reducing input image data input into the display portion at a first reduction rate and image shifting processing of shifting a position of color image data of a specific color component included in reduced image data obtained by the reduction processing by a specific amount in a specific direction, the specific amount and the specific direction being predetermined according to the specific color; and
project a corrected image based on the corrected image data to the projection object by inputting the corrected image data generated by the processor into the display portion,
wherein when a region in which a pixel value is zero is present in an end part of the input image data, the processor controls the first reduction rate based on a size of the region.

### Claim 2 (depends on 1)

The control device according to claim 1,
wherein in performing the correction processing on a plurality of pieces of the input image data in a time-series manner, when an amount of change in the first reduction rate is greater than or equal to a first threshold value, the processor sets the first reduction rate to a value less than 100%.

### Claim 3

A control method of a projection apparatus that projects an image from a display portion displaying the image to a projection object through an optical system, the control method comprising:
a correction step of generating corrected image data by performing correction processing including reduction processing of reducing input image data input into the display portion at a first reduction rate and image shifting processing of shifting a position of color image data of a specific color component included in reduced image data obtained by the reduction processing by a specific amount in a specific direction, the specific amount and the specific direction being predetermined according to the specific color; and
a projection control step of projecting a corrected image based on the corrected image data to the projection object by inputting the corrected image data generated in the correction step into the display portion,
wherein in the correction step, when a region in which a pixel value is zero is present in an end part of the input image data, the first reduction rate is controlled based on a size of the region.

### Claim 4 (depends on 3)

The control method according to claim 3,
wherein in the correction step, in performing the correction processing on a plurality of pieces of the input image data in a time-series manner, when an amount of change in the first reduction rate is greater than or equal to a first threshold value, the first reduction rate is set to a value less than 100%.

### Claim 5

A non-transitory computer readable medium storing a control program of a projection apparatus that projects an image from a display portion displaying the image to a projection object through an optical system, the control program causing a computer to execute:
a correction step of generating corrected image data by performing correction processing including reduction processing of reducing input image data input into the display portion at a first reduction rate and image shifting processing of shifting a position of color image data of a specific color component included in reduced image data obtained by the reduction processing by a specific amount in a specific direction, the specific amount and the specific direction being predetermined according to the specific color; and
a projection control step of projecting a corrected image based on the corrected image data to the projection object by inputting the corrected image data generated in the correction step into the display portion,
wherein in the correction step, when a region in which a pixel value is zero is present in an end part of the input image data, the first reduction rate is controlled based on a size of the region.