| 摘要 |
During the reproduction of signals, a magnetic head (1) is moved along the recording track. An electrically deflectable securing means (2) for the magnetic head is fed an electric signal for deflecting the magnetic head. The deflecting signal is generated in a deflecting-signal generator (11, 12) according to the deflection of the magnetic head with respect to a position of rest. An envelope detector (5) serves for detecting the envelope of the signal which is emitted by the magnetic head. With a multiplying circuit (22), the detected envelope is demodulated synchronously with the deflecting signal, in order to obtain from it the tracking-error signal, which represents the deflection from the position of rest. In the adding circuit (8), the tracking-error signal and the deflecting signal are added. <IMAGE> |
