| 摘要 |
PCT No. PCT/DE93/00209 Sec. 371 Date Nov. 8, 1993 Sec. 102(e) Date Nov. 8, 1993 PCT Filed Mar. 8, 1993 PCT Pub. No. WO93/18449 PCT Pub. Date Sep. 16, 1993A parallel interface for connecting data processing devices to one another or to peripheral devices, particularly a personal computer to a printer, has at least two status information lines, disconnectable line drivers and control lines (SLCT, SLCTIN), the beginning of the data transmission being signaled by the transmitting device on a first control line (STBN) for a predetermined data transmission direction and the end of the data transmission being signaled by the receiving device on a second control line (ACKN). To implement a bidirectional interface with high transmission speed, the two status information lines (SLCT, SLCTIN) are used for disconnecting the line drivers of the device receiving in each case, in order to change over the direction of data transmission. After the direction of data transmission has been changed over, the second control line (ACKN) is used by the then transmitting device in the same manner as the first one before the change-over and the first control line (STBN) is used by the then receiving device in the same manner as the second one before the change-over.
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