Display apparatus for projecting overlapping windows with light modulation valves

A display apparatus adapted to generate image data for controlling a first light modulation section adapted to project a first window, and image data for controlling a second light modulation section adapted to project a second window smaller than the first window and projected so as to overlap with the first window, comprising:

• a first image conversion section adapted to convert a resolution of input image data in accordance a resolution of the first light modulation section to form the image data for controlling the first light modulation section;
• a window size parameter generation section adapted to generate a window size parameter for designating a size of the second window;
• an extraction range setting section adapted to set an extraction range parameter for designating a range of data to be extracted among the input image data based on the window size parameter;
• a second image conversion section adapted to extract data included in an extraction range designated by the extraction range parameter from the input image data, and to convert a resolution of the extracted data according to needs from a relationship between the extraction range and a resolution of the second light modulation section, thereby forming the image data for controlling the second light modulation section;
• an observation distance measurement section adapted to measure an observation distance from a projection screen of the first and second windows to an observer;
• an image quality setting section adapted to set an image quality control parameter for controlling image quality and brightness of the second window based on the window size parameter and the observation distance;
• and
• an image quality control section adapted to execute an image quality control process on the image data for controlling the second light modulation section obtained from the second resolution conversion section in accordance with the image quality control parameter, such that the brightness of the second window varies according to the window size parameter and the observation distance.

A display apparatus adapted to generate image data for controlling a first light modulation section adapted to project a first window, and image data for controlling a second light modulation section adapted to project a second window smaller than the first window and projected so as to overlap with the first window, comprising:

• a first image conversion section adapted to convert a resolution of input image data in accordance a resolution of the first light modulation section to form the image data for controlling the first light modulation section;
• a display position parameter generation section adapted to generate a display position parameter for designating a display position of the second window;
• an extraction range setting section adapted to set an extraction range parameter for designating a range of data to be extracted among the input image data;
• an observation information determination section adapted to measure an observation distance from a projection screen of the first and second windows to an observer;
• a second image conversion section adapted to move a position of the extraction range designated by the extraction range parameter based on the display position parameter, and to extract data included in the extraction range having been moved among the input image data to form the image data for controlling the second light modulation section;
• an image quality setting section adapted to set an image quality control parameter for controlling image quality and brightness of the second window based on the window size parameter and the observation distance;
• an image quality control section adapted to execute an image quality control process on the image data for controlling the second light modulation section obtained from the second image conversion section in accordance with the image quality control parameter, such that the brightness of the second window varies according to the window size parameter and the observation distance;
• and
• a display position control section adapted to control the display position of the second window based on the display position parameter.