| 摘要 |
PURPOSE:To generate a pulse synchronizing with an input pulse and having very high accuracy in the relation of phase and pulse width, by counting a pulse having correlation with the input pulse and a high frequency with a counter. CONSTITUTION:An n-bit counter 10 has a clear input 11, a clock input 12 and an n-bit output 13 as inputs and outputs. In this example of invention, the counter 10 is realized with a 9-bit counter because of the relation of 2fsc=455 fH. Its 9-bit output 13 is inputted to a set pulse generating gate 14 and a reset pulse generating gate 15, where a set pulse 16 and a reset pulse 17 are generated, respectively. The pulses are inputted to an S-R flip-flop 18 to generate an output pulse 19. |
