| 摘要 |
<p>Apparatus for interfacing a conventional facsimile machine (30) with a PC (40) enabling the use of the facsimile machine as a scanner or printer. A first switch assembly (SW2) selectively couples the PC modem (41) and facsimile machine either to independent telephone lines in a normal mode or to one another in a scan/print mode. A manually operated switch assembly (SW1) is depressed (B1) for a brief interval sufficient to activate a ringing circuit (14) which converts DC power from a small battery source to a sine wave and applies the sine wave to the PC to cause the PC or facsimile to enter into a scan or print mode, respectively. The switch (SW1) is then released (B1) to apply a constant current (12) to the facsimile to simulate an off-hook condition. An automatic circuit (25) may be provided to initiate a scanning or printing mode responsive to receipt of a unique number received from either the facsimile or the PC, thus eliminating the need for switches.</p> |
