System and method for measuring vibration characteristics of optical disk drive
AssigneesHong Fu Jin Precision Industry (Shen Zhen) Co., Ltd., Hon Hai Precision Industry Co., Ltd.
InventorsYu-Cheng Ko, Shuang-Quan Luo
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Abstract
A vibration measuring system is used for measuring vibration characteristics of an optical disk drive. The vibration measuring system includes a command setting unit, a command sending unit, and a signal receiving unit. The command setting unit is used for setting a measure command. The command sending unit is used for sending the measure command to the optical disk drive. The signal receiving unit is used for receiving a feedback signal from the optical disk drive, and extracting measured information on the vibration characteristics from the feedback signal. A vibration measuring method is also disclosed.
Claims13
A vibration measuring system for measuring vibration characteristics of an optical disk drive, the vibration measuring system comprising:
- a command setting unit for setting a measure command;
- a command sending unit for sending the measure command to the optical disk drive which in turn sending back a feedback signal;
- and
- a signal receiving unit for receiving the feedback signal from the optical disk drive, and extracting measured information on the vibration characteristics from the feedback signal;
- wherein the measure command uses a format of a 12 bytes small computer system interface, and the measure command comprises a first byte indicating an identifier of the measure command, a third byte and a fourth byte indicating a rotational speed variance, a seven byte and an eighth byte indicating a rotational speed, a ninth byte indicating an initial measure count.
A vibration measuring method for measuring vibration characteristics of an optical disk drive, the vibration measuring method comprising steps of:
- sending a measure command to the optical disk drive to control a motor of the optical disk drive to rotate;
- receiving a feedback signal from the optical disk drive;
- and
- extracting measured information, which comprises track numbers and rotation speed of the motor, from the feedback signal;
- wherein the measure command uses a format of a 12 bytes small computer system interface, and the measure command comprises a first byte indicating an identifier of the measure command, a third byte and a fourth byte indicating a rotational speed variance, a seven byte and an eighth byte indicating a rotational speed, a ninth byte indicating an initial measure count.
Dependencies are inferred from the claim text.