DISPERSED SERVO TRACK COUNTING SCHEME
Original Publication Date: 1982-Apr-30
Included in the Prior Art Database: 2004-Apr-04
Xerox Disclosure Journal
This disclosure takes advantage of the embedded sector servo scheme which does not use a dedicated servo surface for counting track crossings, thereby gaining more data recording capacity. It overcomes the inability of that scheme to count track crossings by having a full circumference servo track placed after each ten or twenty data tracks. In this way, positive location of the recording heads is known for the longer seeks. A counter can be set up to count track crossings. Those dispersed servo tracks may be recorded with a frequency not within the normal frequency spectrum of the data recording or the sector servo recording, thus making the identification of these dispersed servo tracks easier.