High speed servo data interface system for transferring high res

Details High speed servo data interface system for transferring high res High speed servo data interface system for transferring high res

1998-02-20

2000-12-19

Lee, Thomas C.

Electrical computers and digital data processing systems: input/

Input/output data processing

710 1, 710 33, 360 7708, G06F 1300, G11B 5596

Patent

active

061638145

ABSTRACT:
The invention provides a high-speed interface that transfers servo position data from the read channel integrated circuit to the drive control integrated circuit or another integrated circuit. The high-speed interface eliminates the need for analog pins on the integrated circuits to lower the cost of the system. The high-speed interface also eliminates the use of the serial interface to transfer the servo position data which speeds up the data transfer. Examples of servo position data include high-resolution servo position data and coarse-resolution servo position data. A read channel integrated circuit transfers the user data and the high-resolution servo position data to a data bus, such as an NRZ bus. The data bus transfers the user data and the high-resolution servo position data to another integrated circuit, such as a drive control integrated circuit. The other integrated circuit receives the user data and the high-resolution servo position data from the data bus. The coarse-resolution servo position data can also be transferred over the data bus.

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