Two dimensional magnetic recording systems, devices and methods

A system comprising:

• a Two Dimensional Magnetic Recording (TDMR) storage apparatus comprising a magnetic media disk, which is mounted on a spindle and motor assembly, and a head assembly comprising at least a first read head and a second read head, wherein the first read head and the second read head are offset from each other in each of two dimensions;
• and
• a storage controller coupled with the TDMR storage apparatus, the storage controller comprising a first read channel to process a first input signal obtained from the magnetic media disk of the TDMR storage apparatus using the first read head, and a second read channel to process a second input signal obtained from the magnetic media disk of the TDMR storage apparatus using the second read head;
• wherein the first read channel comprises a first analog to digital converter (ADC), the second read channel comprises a second ADC;
• and
• wherein the storage controller comprises a single digital timing loop (DTL) for both the first read channel and the second read channel, the single DTL being configured to control interpolation of timing of sampling for the first and second ADCs, and the storage controller comprises a two dimensional equalizer coupled with output lines of the first read channel and the second read channel.

A method comprising:

• processing, in a first read channel, a first input signal obtained from a Two Dimensional Magnetic Recording (TDMR) storage medium using a first read head, wherein the first read channel comprises a first analog to digital converter (ADC);
• processing, in a second read channel, a second input signal obtained from the TDMR storage medium using a second read head, wherein the second read channel comprises a second ADC;
• controlling interpolation of timing of sampling for the first and second ADCs using a single digital timing loop (DTL) for both the first read channel and the second read channel;
• and
• performing two dimensional equalization on outputs of the first read channel and the second read channel, wherein the first read head and the second read head are offset from each other in each of two dimensions.