Patent ID: 11894025
Assignee: MARVELL ASIA PTE LTD
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 11:
12. Apparatus for writing data to a magnetic data storage medium, the apparatus comprising:
a write head;
preamplifier circuitry configured to generate write signals for input to the write head; and
write channel controller circuitry configured to generate control signals for input to the preamplifier circuitry, the write channel controller circuitry being configured to:
detect whether duration, before occurrence of a data transition, of data to be written exceeds a predetermined threshold, and:
when the duration, before the occurrence of the data transition, of the data to be written exceeds the predetermined threshold, write the data by applying an initial pulse and then maintain a steady-state write current for a defined interval, and
when the duration, before the occurrence of the data transition, of the data to be written is at most equal to the predetermined threshold, write the data by applying the initial pulse without applying a steady-state write current before the data transition.