US 7,841,722 B2Granted

Projection system, projector, image processing program and recording medium recording image processing program

AssigneeSeiko Epson Corporation

InventorsYasunaga Miyazawa, Mitsuhiro Inazumi, Toshiki Fujimori

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Abstract

A projection system includes an image processing apparatus, a projector having an optical modulation element and a projection optical apparatus, and a digital communication unit. The image processing apparatus performs a projector correction process to generate first correction processed image data and an original display correction process to generate a second correction processed image data and generates difference data for a difference between the first correction processed image data and the second correction processed image data, and transmits the difference data to the projector through the digital communication unit. The projector performs the projector correction process on the image data to generate the first correction processed image data and a correction process based on the difference data on the first correction processed image data to generate the second correction processed image data, and controls the optical modulation element based on the second correction processed image data.

Claims20

Dependent claims

A projection system comprising:

an image processing apparatus for processing image data;
a projector having a light source device, an optical modulation element for modulating light beams irradiated from the light source device based on the image data to form an optical image and a projection optical apparatus for projecting light modulated by the optical modulation element;
and
a digital communication unit which connects the image processing apparatus and the projector for enabling the image processing apparatus and the projector to perform digital communication therebetween,
wherein the image processing apparatus includes:
a first processing apparatus correction unit that performs a projector correction process, which can be performed in the projector, on the image data to generate first correction processed image data;
a second processing apparatus correction unit that performs an original display correction process for displaying an image desired to be displayed in the projector on the image data to generate a second correction processed image data;
a difference data generation unit that generates difference data for a difference between the first correction processed image data and the second correction processed image data;
and
a difference data transmission unit that transmits the difference data to the projector through the digital communication unit, and
wherein the projector includes:
a projector correction unit that performs the projector correction process on the image data to generate the first correction processed image data;
a difference correction unit that acquires the difference data transmitted from the image processing apparatus and performs a correction process based on the difference data on the first correction processed image data to generate the second correction processed image data;
and
a display controller which controls the optical modulation element to display an image based on the second correction processed image data.

12 more elements

A projector comprising:

a light source device;
an optical modulation element for modulating light beams irradiated from the light source device to form an optical image based on an image data;
a projection optical device for projecting light modulated by the optical modulation element;
a projector correction unit that is connected through a digital communication unit to an image processing apparatus for processing the image data and generates a first correction processed image data by performing a projector correction process which can be applied to the image data;
a difference correction unit that acquires difference data for a difference between a second correction processed image data generated by performing an original display correction process on the image data for displaying an image originally desired to be displayed and the first correction processed image data from the image processing apparatus through the digital communication unit and generates the second correction processed image data by performing a correction process based on the difference data on the first correction processed image data;
and
a display controller that controls the optical modulation element to display an image based on the second correction processed image data.

4 more elements

Dependencies are inferred from the claim text.