Pioneer PD-6050 Посібник з експлуатації - Сторінка 13

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• i - 1 . ^

7 0 5 0 . P D - 6 0 5 0

- 5 0 5 0 , P D - 4 0 5 0

4. CIRCUIT DESCRIPTIONS

4 . 1 ACCURATE FOCUS SERVO SYSTEM

As a method (the Accurate Focus System) for re-

ducing the distortion of RF signals read by the

pickup, delays have been applied to the output of 2

photodiodes that precede the quarter photodiodes

and is followed by an addition operation in order to

achieve improvements in frequency responce, dis-

tortion, S/N, and so on as well as to increase the

accuracy of signal reading.

Fig. 4-1

1 3