Multistep agc control system for automatic equalizer

Abstract

Abstract PURPOSE:To increase the varying range of the composite properties through the free selection of the change of properties realized by the variable equalizer and by giving the input/output properties of each DC amplifier and then giving individually the impedance value of each variable impedance element. CONSTITUTION:Both variable impedance elements 13 and 14 vary the impedance value in accordance with the signal sent from peak detector 7. And variable equalizers 4 and 2 vary the gain properties each according to the impedance value of elements 13 and 14. Here DC amplifiers 11 and 12 amplify the signal sent from detector 7 to send it to elements 13 and 14 each. In such way, the input/output properties of amplifiers 11 and 12 are given properly along with the impedance value of these amplifiers given individually. Thus the free selection is secured for the change of properties realized by equalizers 4 and 2 in order to increase the varying range of the composite properties.

Inventors

• 👤 Masami Mizuguchi
• 👤 Shinji Kajiwara
• 👤 Hisanobu Fujimoto

Bibliographic Details