| 摘要 |
<p>Devices for converting digital data into a light pulse train and decoding such a pulse train are disclosed. The light pulse generating device (60) generates a train of light pulses having a pattern determined by a numerical value represented by a plurality of binary bits. The light pulse train generating device (60) stores the bits in a register (62). Each cell (63-65) of the register is connected to a light switching device (71-73) that will interrupt a first light beam in response to a light signal if the value stored in the cell is a logical one. If the value is a logical 0, the interruption will not occur. The decoding device (80) utilizes a plurality of light activated switches (84-86) to route individual pulses in the light pulse train to different photodetectors (87-89). The light activated switching devices avoid the delays inherent in electrically activated switching devices.</p> |
