Media storage areal density
In one implementation, the disclosure provides a method comprising detecting one or more areas of a storage medium having a data pattern with a plurality of consecutive bits, where the consecutive bits have the same polarity. The method further comprises encoding additional information on a section of the one or more detected areas, where the section of the one or more detected areas has a signal to noise ratio (SNR) higher than SNR of the other areas of the storage media.
1. A method comprising:
detecting one or more areas of a storage medium having a data pattern with a plurality of consecutive bits, the consecutive bits having the same polarity; and
encoding additional information on a section of the one or more detected areas, the section of the one or more detected areas having a signal to noise ratio (SNR) higher than SNR of other areas of the storage medium.
2. The method of claim 1 , wherein the additional information is encoded by turning off a magnetic field supplied by a magnetic writer when, during a writing process, the magnetic writer is over a portion of the detected area where the additional information is to be encoded.
3. The method of claim 2 , wherein the additional information is read by a reader as an area with no magnetization.
4. The method of claim 1 , wherein one or more tracks of the storage media are divided into a primary sub-track and a secondary sub-track.
5. The method of claim 4 , wherein the data pattern is encoded on the primary sub-track by a first write head during a writing operation.
6. The method of claim 5 , wherein the additional information is encoded on the secondary sub-track by a second write head during the writing operation.
7. The method of claim 6 , wherein the additional information encoded on the secondary sub-track is read in conjunction with the data pattern encoded on the primary sub-track.
8. A system comprising:
a storage media system including a media storage device; and
a storage controller configured to:
detect one or more areas of a storage medium having a data pattern with a plurality of consecutive bits, the consecutive bits having the same polarity, and
encode additional information on a section of the one or more detected areas, the section of the one or more detected areas having a signal to noise ratio (SNR) higher than SNR of other areas of the storage media.
9. The system of claim 8 , wherein the additional information is encoded by turning off a magnetic field supplied by a magnetic writer when, during a writing process, the magnetic writer is over a portion of the detected area where the additional information is to be encoded.
10. The system of claim 9 , wherein the additional information is read by a reader as an area with no magnetization.
11. The system of claim 8 , wherein the data pattern is encoded on a primary sub-track by a first write head during a writing operation.
12. The system of claim 11 , wherein the additional information is encoded on a secondary sub-track by a second write head during the writing operation.
13. The system of claim 12 , wherein the additional information encoded on the secondary sub-track is read in conjunction with the data pattern encoded on the primary sub-track.
14. One or more non-transitory computer-readable storage media encoding computer-executable instructions for executing on a computer system a computer process comprising:
detecting one or more areas of a storage medium having a data pattern with a plurality of consecutive bits, the consecutive bits having the same polarity; and
encoding additional information on a section of the one or more detected areas, the section of the one or more detected areas having a signal to noise ratio (SNR) higher than SNR of other areas of the storage medium.
15. The one or more non-transitory computer-readable storage media encoding computer-executable instructions for executing on the computer system the computer process of claim 14 , wherein the additional information is encoded by turning off a magnetic field supplied by a magnetic writer when, during the writing process, the magnetic writer is over a portion of the detected area where the additional information is to be encoded.
16. The one or more non-transitory computer-readable storage media encoding computer-executable instructions for executing on the computer system the computer process of claim 15 , wherein the additional information is read by a reader as an area with no magnetization.
17. The one or more non-transitory computer-readable storage media encoding computer-executable instructions for executing on the computer system the computer process of claim 14 , wherein one or more tracks of the storage media are divided into a primary sub-track and a secondary sub-track.
18. The one or more non-transitory computer-readable storage media encoding computer-executable instructions for executing on the computer system the computer process of claim 17 , wherein the data pattern is encoded on the primary sub-track by a first write head during a writing operation.
19. The one or more non-transitory computer-readable storage media encoding computer-executable instructions for executing on the computer system the computer process of claim 18 , wherein the additional information is encoded on the secondary sub-track by a second write head during the writing operation.
20. The one or more non-transitory computer-readable storage media encoding computer-executable instructions for executing on the computer system the computer process of claim 19 , wherein the additional information encoded on the secondary sub-track is read in conjunction with the data pattern encoded on the primary sub-track.