Patent Document ID: 8866914
Application ID: 13845354
Patent Status: 1

Claim One:
1. A pattern position detection method for capturing patterns displayed on a display panel with a camera and detecting positions of images of the patterns on an imaging surface of the camera, the method comprising: a red pattern imaging condition storing step of storing a first focus, a first shutter speed, and a first f-number for imaging red patterns; a red pattern capturing step of displaying red patterns at predetermined positions on the display panel and capturing the red patterns with the camera using the first focus, the first shutter speed, and the first f-number stored by the red pattern imaging condition storing step; a first black image capturing step of displaying a black image on the display panel and capturing the black image with the camera using the first focus, the first shutter speed, and the first f-number stored by the red pattern imaging condition storing step; a green pattern imaging condition storing step of storing a second focus, a second shutter speed, and a second f-number for imaging green patterns; a green pattern capturing step of displaying green patterns at predetermined positions on the display panel and capturing the green patterns with the camera using the second focus, the second shutter speed, and the second f-number stored by the green pattern imaging condition storing step; a second black image capturing step of displaying a black image on the display panel and capturing the black image with the camera using the second focus, the second shutter speed, and the second f-number stored by the green pattern imaging condition storing step; a blue pattern imaging condition storing step of storing a third focus, a third shutter speed, and a third f-number for imaging blue patterns; a blue pattern capturing step of displaying blue patterns at predetermined positions on the display panel and capturing the blue patterns with the camera using the third focus, the third shutter speed, and the third f-number stored by the blue pattern imaging condition storing step; a third black image capturing step of displaying a black image on the display panel and capturing the black image with the camera using the third focus, the third shutter speed, and the third f-number stored by the blue pattern imaging condition storing step; a red pattern position detecting step of detecting positiFons of images of the red patterns on the imaging surface based on a difference between an image captured in the red pattern capturing step and an image captured in the first black image capturing step; a green pattern position detecting step of detecting positions of images of the green patterns on the imaging surface based on a difference between an image captured in the green pattern capturing step and an image captured in the second black image capturing step; and a blue pattern position detecting step of detecting positions of images of the blue patterns on the imaging surface based on a difference between an image captured in the blue pattern capturing step and an image captured in the third black image capturing step.