| 摘要 |
<p>In the present invention, a communication system is disclosed. The communication system comprises a remote computer (20) and a local computer (40), linked by communication link (12). The local computer (40) operates a conventional alphanumeric communication program (42) which receives alphanumeric data from the remote computer (20). The local computer (40) also comprises a supervisory program (56) which is Terminate and Stay Resident in memory, and which interrupts the operation of the alphanumeric communication program (42). When a particular command query is generated from the remote computer (20), the supervisory program (56) causes the local computer (40) to respond thereto, indicating the capabilities of the local computer (40) for graphical data display. When graphical data, which has been compressed and encoded in alphanumeric format is transmitted by the remote computer (20) and is received by the local computer (40), and stored in a first memory (44), the local computer (40) decodes the alphanumeric format and decompresses to regenerate the original graphical data. The original graphical data is then stored in a second memory (54) and the display unit (48) is directed to receive the graphical data and to display on the display unit (48).</p> |
