전자공학회논문지B (Journal of the Korean Institute of Telematics and Electronics B)
- 제30B권12호
- /
- Pages.31-39
- /
- 1993
- /
- 1016-135X(pISSN)
디지털 고밀도 자기기록 장치의 재생신호 처리에 관한 연구
Playback Signal Processing in a Digital High Density Magnetic Recording System
초록
In the playback signal processing of a digital magnetic recording system, the major signal processing processes consist of pulse equalization. pulse detection, clock recovery, and data recovery. Equalizer which compensates interference occurrde between pulses recorded in high density on a magnetic media is realized by pulse slimming method, and pulse detection by a integrating detector. Clock recovery from the detector output was accomplished by using PLL. and data recovery to reduce noise effects was carried out by utilizing the three sampling clocks recovered in clock recovery process. In this paper these processes are implemented in hardware and its performance is evaluated by experimenting with a commercial DAT. It was found that the playback signal processor proposed is suitable to the practical high density magnetic recording system.
키워드