Abstract: An apparatus and method for recognizing characters in image information includes inputting image coordinate data corresponding to the handwritten image, displaying a calligraphic image on the basis of the image coordinate data, recognizing characters in the image coordinate data, and erasing the calligraphic image and displaying recognized characters recognized in the recognizing step in the event that a recognized character is a predetermined character such as a period (".").

Abstract: A coordinate input apparatus according to the present invention eliminates distortion caused by interference of a asymmetrical plate wave with an asymmetrical plate wave from the vibrations which are detected after they have been propagated in a vibration transmitting member and performs a highly accurate position coordinate detection. The vibrations of a pen which is brought into contact with the vibration transmitting member are detected by sensors provided on both the front and rear surfaces of the vibration transmitting member to determine a coordinate of a position where the vibrating pen has been brought into contact. At that time, the vibration sensors mounted on the front and rear of the vibration transmitting member in an opposed relation detect vibrations on the two surfaces of the transmitting member. The signals which are detected by each pair of front and rear sensors represent vibrations in which the asymmetrical plate waves having the same phase and the 180.degree.