High speed PES demodulator

Details High speed PES demodulator High speed PES demodulator

1994-10-19

1998-08-11

Psitos, Aristotelis M.

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

360 75, G11B 5596

Patent

active

057935564

ABSTRACT:
A channel circuit that receives an analog disk readback signal of a data storage disk drive includes a comparator string and a data channel binary decoder that together comprise what is commonly referred to as a flash analog-to-digital (A/D) converter, which processes the data channel information of the readback signal. The servo information of the readback signal is provided to the comparator string of the data channel flash A/D converter, whose output then is provided to a servo burst binary decoder for decoding to produce the desired servo burst data. Thus, the servo information is digitized and decoded at the relatively high speed possible with a flash A/D converter, without requiring a comparator string in addition to what would otherwise be provided for the data channel application.

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