JPS6161637U - - Google Patents

Description

[Brief explanation of drawings]

Fig. 1 is a block diagram of an example of the main part of this devised device, Fig. 2 is an explanatory diagram, and Fig. 3 is a record of tracking control performed only by a rotating head without using a fixed head. FIG. 4 is a block diagram for explaining an example of tracking control, and FIG. 5 is a timing chart for explaining the tracking pattern. HA and HB are rotary heads; 21 is a low-pass filter for extracting the reproduced pilot signal; 22
44 is a capstan motor, and 48 is a variable resistor for tracking adjustment.

Claims (1)

[Scope of utility model registration request] When reproducing the information signal from a recording medium in which an information signal is recorded as a diagonal track by a rotating head and a plurality of pilot signals having different frequencies are recorded cyclically for each track, the information signal is recorded by the rotating head for reproduction. The pilot signal is then reproduced from the recording track, the frequency component of the difference between this reproduced pilot signal and the reference pilot signal is obtained, and the capstan motor is controlled in accordance with the frequency component of this difference to drive the rotary head for reproduction. In a device that performs tracking control, a variable resistor is provided that can change the speed of the capstan motor within a range that does not release the tracking control lock, and by adjusting the variable resistor, the tracking position can be adjusted. A playback device that does this.