Title:
ADJUSTING DEVICE FOR MAGNETIC RECORDING AND REPRODUCING DEVICE
Document Type and Number:
Japanese Patent JP3232862
Kind Code:
B2
Abstract:
PURPOSE: To read out a distinct track linearity error in real time in using an azimuth time difference detecting device by delaying a preceding side signal by a time difference between a preceding side head and a delayed side head.
CONSTITUTION: Only a synchronizing signal in a signal from a 1st head 1 is taken out by a synchronizing signal separating circuit 5, and is delayed by a delay circuit 7 by the time difference between the preceding side head and the delayed side head. On the other hand, only a synchronizing signal in a signal from a 2nd head 2 is taken out by a synchronizing signal separating circuit 6, and is inputted to an azimuth time difference detecting circuit 8. A time deviation between the synchronizing signal from the 1st head 1, delayed by this circuit 8 and the synchronizing signal from the 2nd head 2 in real time is detected by a clock and a counter to be a number of pulses of the clock. This number of pulses is converted into an analog signal by a D/A converter 9. By the azimuth time difference detecting circuit 8, the distinct track linearity error can be read out in real time.
Inventors:
Atsushi Takeuchi
Suguru Goto
Akira Koga
Suguru Goto
Akira Koga
Application Number:
JP4734794A
Publication Date:
November 26, 2001
Filing Date:
March 17, 1994
Export Citation:
Assignee:
Matsushita Electric Industrial Co., Ltd
International Classes:
G11B15/00; G11B5/00; (IPC1-7): G11B5/00; G11B15/00
Domestic Patent References:
| JP60197902A | ||||
| JP6329301A |
Attorney, Agent or Firm:
Fumio Iwahashi (2 others)