| 摘要 |
PURPOSE: To realize a quick convergence of a transversal equalizer in a reset state in the demodulator in which the transversal equalizer equalizes a demodulated base band signal. CONSTITUTION: Identification devices 7a,7b compare control signals S9a,S9b outputted from integration devices 6a, 6b with reference voltages Vra, Vrb and provide identification signals S11a, S11b with a level '0' when the control signals S9a, S9b are higher and with a level '1' when the control signals S9a, S9b are smaller to selection circuits 9a,9b. Since the selection circuits 9a, 9b select the identification signals S11a, S11b upon the receipt of a reset signal S12, the control signals S9a, S9b are used for reference voltages Vra, Vrb when the demodulator is operated stably, and amplifiers 3a, 3b set demodulated base band signals S4a, S4b to a normal signal level and a DC offset. Then a transversal equalizer 5 and the demodulator are converged quickly. |
