Patent ID: 11875824
Assignee: TOSHIBA ELECTRONIC DEVICES & STORAGE CORPORATION
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 0:
1. A magnetic disk device comprising:
magnetic disks;
a plurality of actuator systems configured to perform write/read on the magnetic disks;
a plurality of controller chips each including a buffer control circuit and an arbitration circuit, each of the plurality of controller chips being configured to control a corresponding one of the plurality of actuator systems; and
a buffer memory, wherein
the plurality of controller chips include a first controller chip, a second controller chip, and a third controller chip,
the first controller chip is connected to the buffer memory via the buffer control circuit included in the first controller chip, and is connected to the second controller chip,
the second controller chip is connected to the first controller chip and the third controller chip, and
the arbitration circuit included in the second controller chip is configured to perform arbitration between data transfer between the third controller chip and the first controller chip and data transfer between the first controller chip and an actuator system controlled by the second controller chip among the plurality of actuator systems.