Concurrent modulation and frictional heating head disk contact detection

Concurrent modulation and frictional heating head disk contact detection is disclosed. An apparatus comprises a heat-assisted magnetic recording (HAMR) head, a sensor, and a controller. The HAMR head is configured to interact with a magnetic storage medium. The sensor is configured to produce a signal indicating the occurrence of head-medium contact. The controller is configured to receive the signal and concurrently determine from the signal if the occurrence of head-medium contact is caused by a first contact detection parameter, a second contact detection parameter, or both the first and second contact detection parameters. 公开了种同时发生调制和摩擦加热的头盘接触检测。种装置包括热辅助磁记录(HAMR)头、传感器和控制器。该HAMR头配置为与磁性存储介质相互作用。该传感器配置为产生指示头-介质接触的发生的信号。该控制器配置为接收该信号并且同时从该信号中由第接触检测参数、第二接触检测参数、或者第与第二接触检测参数两者来确定是否造成了头-介质接触的发生。