Terminal apparatus with transmission function

A terminal apparatus for displaying a natural image on a display unit and sending said natural image to another terminal apparatus, comprising:

• only one storage means for storing RGB data, luminance/color difference data and compression data, said RGB data being obtained by scanning said natural image, said luminance/color difference data being obtained by converting said RGB data, and compression data being obtained by compressing said luminance/color difference data under a predetermined method;
• switching means operatively connected to said storage means for switching content of display on said display unit from said RGB data stored in said storage means to image data not stored in said storage means when said RGB data is converted to said luminance/color difference data and said luminance/color difference data is converted to said compression data;
• and
• control means operatively connected to said storage means and said switching means for reading out said RGB data from said storage means, converting said RGB data to said luminance/color difference data, storing said luminance/color difference data into said storage means, and compressing said luminance/color difference data to said compression data after read out from said storage means, further, for controlling switching operation of said switching means.