| 摘要 |
PROBLEM TO BE SOLVED: To provide a portable information processing device capable of displaying a digital drawing composed of a great amount of vector to a display unit with both high speed and high accuracy.SOLUTION: Vector data of a drawing is received through a communication means from a drawing management server, that vector data and raster data converted to a specified size from the vector data are stored, display is made on the basis of the raster data when enlarging and reducing data inputted from a touch panel is a prescribed value or lower, display is made on the basis of the raster data until the prescribed value is exceeded and an enlarging ratio is confirmed or until display preparation for the vector data is completed, display is made on the basis of the vector data after confirmation or after the preparation is finished. A screen is capable of being enlarged, reduced in real time during operation and the feel of operation is better. Furthermore high speed display is capable of being obtained in portable devices such as a tablet type device. At that time, phenomenon such as deterioration in visibility or missing of fine lines occurring due to reduction of resolution are capable of being prevented. |
