Multiple section read/write head for high track density, flexible media storage applications
View Patent ↗The present invention divides the recording head into multiple sections, each section accessing a subset of the total number of channels arranged such that one section reads and writes only a subset of the data channels. The sections may be either independently actuated for both coarse (data band) and fine (track-following) positioning, or linked by a common actuator for data band positioning with independent fine position actuators for fine track following.
1. A read/write head assembly for accessing a plurality of data channels on a magnetic tape medium, the read/wrote head assembly comprising:
a first head section, wherein the first head section accesses a first subset of the plurality of data channels on the magnetic tape medium; and
a second head section, wherein the second head section accesses a second subset of the plurality of data channels on the magnetic tape medium,
wherein the first head section and second head section are aligned independently to access the first subset of data channels and the second subset of data channels concurrently.
2. The read/write head assembly of claim 1 , wherein at least one of the first head section and the second head section is a three bump head section.
3. The read/write head assembly of claim 2 , wherein the three bump head section comprises one of a read/write/read configuration and a write/read/write configuration.
4. The read/write head assembly of claim 1 , wherein at least one of the first head section and the second head section is a two bump head section.
5. The read/write head assembly of claim 4 , wherein the two bump head section comprises two merged pole modules.
6. The read/write head assembly of claim 1 , wherein the first head section writes data to the first subset of the plurality of data channels and the second head section writes data to the second subset of the plurality of data channels.
7. The read/write head assembly of claim 6 , wherein the first head section and the second head section perform read-after-write data verification.
8. The read/write head assembly of claim 1 , wherein the first subset of the plurality of data channels and the second subset of the plurality of data channels are interleaved.
9. The read/write head assembly of claim 1 , further comprising a third head section, wherein the third head section accesses a third subset of the plurality of data channels.
10. A data recording system comprising:
a magnetic tape read/write head including:
a first head section, wherein the first head section accesses a first subset of data channels; and
a second head section, wherein the second head section accesses a second subset of data channels;
a first fine position actuator that aligns the first head section to access the first subset of data channels; and
a second fine position actuator that aligns the second head section to access the second subset of data channels.
11. The data recording system of claim 10 , wherein the first subset of data channels and the second subset of data channels are in the same data band.
12. The data recording system of claim 11 , wherein the data recording system further comprises:
a course position actuator that aligns the read/write head to the data band,
wherein the first fine position actuator aligns the first head section to access the first subset of data channels within the data band; and
wherein the second fine position actuator aligns the second head section to access the second subset of data channels within the data band.
13. The data recording system of claim 11 , wherein the first subset of data channels and the second subset of data channels are interleaved.
14. The data recording system of claim 10 , wherein the first subset of data channels is in a first data band and the second subset of data channels is in a second data band.
15. The data recording system of claim 14 , wherein the first fine position actuator aligns the first head section to access the first subset of data channels within the first data band; and
wherein the second fine position actuator aligns the second head section to access the second subset of data channels within the second data band.
16. A method for accessing a plurality of data channels on a magnetic tape medium, the method comprising:
aligning a first head section to access a first subset of the plurality of data channels on the magnetic tape medium; and
aligning a second head section to access a second subset of the plurality of data channels on the magnetic tape medium,
wherein the first head section and second head section access the first subset of data channels and the second subset of data channels concurrently and wherein the first head section and the second head section are aligned independently.
17. The method of claim 16 , wherein the first head section writes data to the first subset of the plurality of data channels and the second head section writes data to the second subset of the plurality of data channels.
18. The method of claim 17 , wherein the first head section and the second head section perform read-after-write data verification.
19. The method of claim 16 , wherein the first subset of the plurality of data channels and the second subset of the plurality of data channels are interleaved.
20. The method of claim 16 , further comprising aligning a third head section to access a third subset of the plurality of data channels.