Hardware-based inter-track interference mitigation in magnetic recording systems with read channel storage of cancelation data

摘要

Hardware-based methods and apparatus are provided for inter-track interference mitigation in magnetic recording systems. Inter-track interference (ITI) cancellation data is stored in a memory of a read channel of a magnetic recording system. The memory can be in a write data path or a read data path of the read channel. The inter-track interference cancellation data is optionally provided to an inter-track interference mitigation circuit using at least a portion of a write data path, for example, based on a control signal. The storage of the inter-track interference cancellation data can be in response to a second control signal.

主权项

1. A method for obtaining inter-track interference (ITI) cancellation data in a magnetic recording system, comprising:
obtaining read data from a magnetic recording medium in said magnetic recording system; and storing said obtained read data as inter-track interference cancellation data in a memory in a read channel of said magnetic recording system based on a control signal, wherein said control signal selectively indicates whether said read data should be stored as said inter-track interference cancellation data in said memory.