| 摘要 |
PURPOSE:To realize an economical constitution and high-speed operation for reading the information by dividing the time switch memory of the time-division exchange into several blocks and then applying the address signals of the memory to the selection circuit and each memory element at one time. CONSTITUTION:The time switch memory of the time-division exchange is formed with several units of blocks, and part of the memory address signals is applied to selection circuit SEL. The rest address signals are applied simultaneously to memory elements M0-Mn, and the information read simultaneously out from elements M0-Mn are selected through circuit SEL and then delivered. As a result, the decoder to give the selective action to each memory element can be omitted, and at the same time the reading information of each memory element is delivered via circuit SEL not the wired OR. Thus the rounding of the waveform is reduced to decrease the dispersion of the output time, realizing a high-speed action. |
