The 1990's may well be considered as the era of information technology,
with the prevalence of computers, digital communications and hence the need for
data storage. Diverse data storage media have been introduced, such as silicon
(flash memory) [3] and the CD (Compact Disk) [4], however improvements in
magnetic recording has resulted in magnetic media as the prominent leader in mass
storage technology. With improvements to the storage medium, the read/write heads
and the channel electronics, the capacity of magnetic rigid disks has approximately
doubled every 3 years (period 1960-90) [5]. These improvements to the channel,
coupled with fast data-access times, has resulted in the magnetic disk drive
remaining the dominant data storage device in computer technology.
As storage densities increased, digital audio became viable and, driven by the
enormous consumer market, products such as the audio CD [6] and RDAT (Rotary
Head Digital Audio Tape) [7] have taken over from their analogue counterparts, as
state of the art digital recording.
Data communications is another huge growth area, with satellite data
communications providing exciting new applications such as MPEG-2 (Motion
Pictures Expert Group) compressed digital TV [8], Internet access [9] and personal
communications [10].
Date of Award | 1999 |
---|
Original language | English |
---|
Awarding Institution | |
---|
RAPID CLOCK RECOVERY ALGORITHMS FOR DIGITAL MAGNETIC RECORDING AND DATA COMMUNICATIONS
SMITHSON, P. M. (Author). 1999
Student thesis: PhD