| 摘要 |
<p>A system for printing print data superimposed on a television broadcast signal. When a print button is displayed only when printing is enabled, a user cannot decide whether no print data is present or the data is not displayed because there is no printer. In this system, not only the print data but also printer is detected. When print data is detected but no printer is detected, it is displayed that printing cannot be performed because there is no printer although print data is present.</p> |
