| 摘要 |
PURPOSE:To attain an output with free time location in one frame for various kinds of control signals with simple constitution by storing the time location of each control signal in an ROM in advance and reading sequentially these storage contents. CONSTITUTION:A clock is regenerated from received data by a clock regenerating circuit 15, the data is inputted to a shift register 14, compared with an output of a reference pattern generator 12 for frame synchronism by an exclusive OR gate 13, an output of a crystal oscillator 16 is frequency-divided, the ROM19 is accessed by a counter 18, its output is latched by a latch circuit 20 and the result of comparison resets the counters 17 and 18. |
