Method and system for compensating for track squeeze

The method of claim 2 wherein using the known interfering data comprises employing an interfering data cancellation technique that accepts known interfering data as an input.

The method of claim 4 wherein the writing interfering data and recovering data comprises:nintentionally encroaching onto the current track of data by an initial increment,writing an initial instance of interfering data to the at least one adjacent track of data while intentionally encroaching onto the current track of data by the initial increment,recovering initial data on the current track of data using the initial instance of interfering data,checking for errors in the initial data,in absence of errors in the initial data, outputting the initial data, andon occurrence of errors in the initial data:intentionally encroaching onto the current track of data by a further increment,writing a further instance of interfering data to the at least one adjacent track of data while intentionally encroaching onto the current track of data by the further increment,recovering further data on the current track of data using the further instance of interfering data,checking for errors in the further data, andrepeating the intentional encroaching onto the current track of data by a further increment, the writing a further instance, the recovering further data, and the checking for errors in the further data, until there is at most a threshold level of error in the further data, and then outputting the further data.

The storage device of claim 9 wherein the circuitry that recovers data employs an interfering data cancellation technique that accepts known interfering data as an input.

The storage device of claim 11 wherein:nthe write head encroaches onto the current track of data by an initial increment,the write head writes an initial instance of interfering data to the at least one adjacent track of data while encroaching onto the current track of data by the initial increment,the circuitry recovers initial data on the current track of data using the initial instance of interfering data,the circuitry checks for errors in the initial data,on occurrence of at most a threshold amount of error in the initial data, the circuitry outputs the initial data, andon occurrence of errors in the initial data:the write head intentionally encroaches onto the current track of data by a further increment,the write head writes a further instance of interfering data to the respective one of the at least one adjacent track of data while intentionally encroaching onto the current track of data by the further increment,the circuitry recovers further data on the current track of data using the further instance of interfering data,the circuitry checks for errors in the further data, andthe intentional encroaching by the write head onto the current track of data by a further increment, the writing by the write head of a further instance, the recovering by the circuitry of further data, and the checking by the circuitry for errors in the further data, are repeated until there is at most a threshold amount of error in the further data, and then the circuitry outputs the further data.

The storage device of claim 11 wherein the initial increment of intentional encroachment is determined from write head servo data.