US 12,136,437 B2
Servo pattern recording method, servo pattern recording apparatus, method of producing tape-like magnetic recording medium, tape-like magnetic recording medium, and servo write head
Minoru Yamaga, Tokyo (JP)
Assigned to Sony Group Corporation, Tokyo (JP)
Appl. No. 18/281,144
Filed by Sony Group Corporation, Tokyo (JP)
PCT Filed Feb. 28, 2022, PCT No. PCT/JP2022/008219
§ 371(c)(1), (2) Date Sep. 8, 2023,
PCT Pub. No. WO2022/190928, PCT Pub. Date Sep. 15, 2022.
Claims priority of application No. 2021-039338 (JP), filed on Mar. 11, 2021.
Prior Publication US 2024/0153535 A1, May 9, 2024
Int. Cl. G11B 20/12 (2006.01); G11B 5/008 (2006.01)
CPC G11B 20/1202 (2013.01) [G11B 5/00817 (2013.01)] 24 Claims
OG exemplary drawing
 
1. A servo pattern recording method of recording a servo pattern along a longitudinal direction of a tape-like magnetic recording medium, comprising:
determining a first servo band group that includes three or more first servo bands for recording a first servo pattern in which first servo band identification information having a plurality of bits is to be embedded, and a second servo band group that includes three or more second servo bands for recording a second servo pattern in which second servo band identification information having a plurality of bits is to be embedded, the second servo band identification information being different from the first servo band identification information; and
recording the first servo band identification information on the first servo band group and the second servo band identification information on the second servo band group such that a combination of a first pair and a second pair is not duplicated between two servo bands adjacent to each other, the first pair being a pair of servo band identification information and a phase thereof in the longitudinal direction in one of the two servo bands read by a first servo read head, the second pair being a pair of servo band identification information and a phase thereof in the longitudinal direction in the other servo band read by a second servo read head.