Other

Transpacific IP Limited

Umax Data Systems, Inc.

Cheng-Kuei Chen

Jen-Shou Tseng

Chih-Wen Huang

Chu-Hui Yu

A compensation apparatus for image scan, applied to an optical scanner with a platform, on which an object to be scanned is disposed. The optical scanner has a photosensitive apparatus with a set of scan photosensitive devices and a storage apparatus. When the object is scanned by the set of scan photosensitive devices, a scanned image is obtained and saved in the storage apparatus temporarily. The compensation apparatus has a set of calibration boards, a set of calibration photosensitive devices and an image processor. The set of calibration boards has two calibration boards located at two sides of the platform. The set of calibration photosensitive devices is located at two sides of the set of scan photosensitive device. The image processor is used to extract and compare the calibrated image, so as to adjust the scanned image.

Compensation apparatus for image scan

A method for position restoration. By comparing the graphic data and the restored graphic data, the graphic data closest to the restored graphic data is selected. Therefore, the graphic data scanned subsequently is correctly connected to the restored graphic data to avoid the missing line or repetition of graphic data.

Method for determining restored scanning position

A scanning method for detecting documents is provided an optical scanning device. The optical scanning device is capable of scanning an object by a reflective scanning mode or a transmittal scanning mode. Then obtaining an image signal of the object by either the reflective scanning mode or a transmittal scanning mode with the retrieved scanning mod. Comparing the image signal with a pre-determined signal will result in an implementation from one of the reflective scanning mode or the transmittal scanning mode.

Growing community of inventors

Hsinchu, Taiwan

Cheng-Kuei Chen