RESOLUTION DEGREE CHANGING METHOD FOR FAX

摘要

The method provides a resolution conversion, without the distortion of an input image, using a line memory that can keep a whole picture precise. This method comprises a CPU (Central Processing Unit) (10), a scanning unit (20) which under the control of the CPU forms an analog image signal by scanning and converts that signal to digital image data, a signal processing unit (30) which restores the converted image data and performs decoding and encoding when accessed to the other system, a recording unit (40) which prints the restored image data white or black on screen under the control of the CPU, and a transmitting unit (50) which transmits or receives the image data to the other system.