Abstract: The present invention predicts and diagnoses damage to a read head element of a magnetic head used in a magnetic storage device. The present invention includes a control circuit for implementing a write data protection operation and for implementing a write and read operation using a different magnetic head when damage to the read head element is predicted, so as to allow detection of write data using a read element of a different magnetic head. The control circuit includes a monitor configured to detect a voltage of a read head element of a magnetic head, a comparator that determines whether the detected voltage exceeds a threshold voltage, the threshold voltage preferably being less than a maximum tolerable voltage of the read head element, and a counter configured to count signals passing through the comparator.

Abstract: A broadband transmission path apparatus connects a head IC and a head in a suspension. Either one of the head IC and the head is assumed as a transmission terminal and the other is assumed as a reception terminal to divide a required transmission frequency band into at least two, one of which is assumed as a low band transmission path for low frequency transmission band and the other of which is assumed as a high band transmission path for high frequency transmission band. The high band transmission path forms a resonant circuit by a resistor component, an inductance component and a capacitor component of the transmission path itself, and realizes the high frequency transmission band characteristic by a resonant frequency characteristic of the resonant circuit.

Abstract: A head IC adjusts an amplitude level of a read signal of a head to adjust dispersion of the output characteristic of the head and to adjust the read signal within the input dynamic range of the AGC of a read channel. An AGC amplifier is installed in a head IC connected to a read channel and a feedback response speed of an AGC circuit of the head IC is set to be sufficiently slower than a feedback response speed of an AGC circuit of the read channel. Also a peak hold circuit and an amplitude limiting circuit are installed in the head IC, and gain is adjusted with a holding value of the peak hold circuit. An initial gain can therefore be stably adjusted at high-speed without being influenced by signals having a small amplitude on the medium.

Abstract: A heater control method for a built-in heater of a head includes turning the heater ON during a time corresponding to consecutive read operation time and write operation time, and turning the heater OFF during a time corresponding to a read operation time after a write operation time.

Abstract: The heads have write head elements which record data onto a disk medium capable of coping with perpendicular magnetic recording and read head elements which reproduce data. The monitored band detecting unit sets a frequency band in a range from the signal band of the write data signal to the error rate worsening band on a lower level in which the error rate worsens as a monitored band, and detects a signal in the monitored band from among write data entered into the write amplifier. The determining unit discontinues the recording operation of the write amplifier 50 upon determination that a detection signal of the monitored band detected by the monitored band detecting unit is larger than a prescribed threshold value and outputs a determination signal from the fault terminal to generate a fault event.

Abstract: A heater control method for a built-in heater of a head includes turning the heater ON during a time corresponding to consecutive read operation time and write operation time, and turning the heater OFF during a time corresponding to a read operation time after a write operation time.

Abstract: A heater control method for a built-in heater of a head includes turning the heater ON during a time corresponding to consecutive read operation time and write operation time, and turning the heater OFF during a time corresponding to a read operation time after a write operation time.

Abstract: A storage apparatus and a magnetic head driving device includes a recording/reproducing head including a write element and a magnetoresistive element, a driving circuit for driving the write element and the magnetoresistive element, and write wires and read wires which connect the recording/reproducing head to the driving circuit. The write wires and the read wires are disposed in parallel in at least a portion between the recording/reproducing head and the driving circuit. At a location between the recording/reproducing head and the driving circuit, either of the write wires and the read wires are disposed so that a polarity of the either of the write wires and the read wires is reversed with respect to a polarity of the other of the write wires and the read wires.

Abstract: A heater control method for carries out an ON/OFF control with respect to a built-in heater of a head, by turning the heater ON during a time corresponding to consecutive read operation time and write operation time, and turning the heater OFF during a time corresponding to a read operation time after a write operation time.

Abstract: A broadband transmission path apparatus connects a head IC and a head in a suspension. Either one of the head IC and the head is assumed as a transmission terminal and the other is assumed as a reception terminal to divide a required transmission frequency band into at least two, one of which is assumed as a low band transmission path for low frequency transmission band and the other of which is assumed as a high band transmission path for high frequency transmission band. The high band transmission path forms a resonant circuit by a resistor component, an inductance component and a capacitor component of the transmission path itself, and realizes the high frequency transmission band characteristic by a resonant frequency characteristic of the resonant circuit.