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US 7,614,061 B2Granted
Tray loading/unloading apparatus
AssigneeHon Hai Precision Industry Co., Ltd.
InventorYu-Cheng Ko
Life of this patent
Estimating the term…
Abstract
A tray loading apparatus includes a tray, a motor, a drive circuit. The tray is movable between a load position and an unload position. The motor is constructed and arranged for bringing the tray to move from the unload position to the load position. The drive circuit is used for apply a loading voltage to the motor and the loading voltage includes at least one gradually increasing stage. A tray unloading apparatus and an optical disc drive are also provided.
Claims18
A tray loading apparatus, comprising:
- a tray being movable between a load position and an unload position;
- a motor constructed and arranged for bringing the tray to move from the unload position to the load position;
- and
- a drive circuit for applying a loading voltage to the motor and the loading voltage includes at least one increasing stage;
- wherein at least one the increasing stage comprises at least one time interval, and the loading voltage is constant during the at least one time interval;
- wherein the at least one increasing stage comprises a first increasing stage and a second increasing stage, the first increasing stage includes multiple first steps and the second increasing stage includes multiple second steps, each of the first steps in the first increasing stage defines a first time interval, the loading voltage remains constant during the first time interval, each of the second steps in the second increasing stage defines a second time interval, the loading voltage remains constant during the second time interval, the first time interval is different from the second time interval.
3 more elements
A tray unloading apparatus, comprising:
- a tray being movable between a load position and an unload position;
- a motor constructed and arranged for bringing the tray to move from the load position to the unload position;
- and
- a drive circuit for applying an unloading voltage to the motor and the unloading voltage including at least one decreasing stage;
- wherein the at least one decreasing stage includes at least one time interval and the unloading voltage is constant during the at least one time interval, the unloading voltage remains at a constant value between an initial point where the unloading voltage is initially applied to the motor and a decreasing point where the unloading voltage staffs to decrease.
2 more elements
An optical disc drive, comprising:
- a tray being movable between a load position and an unload position;
- a motor for driving the tray to move between the load position and the unload position;
- a drive circuit for outputting a voltage to drive the motor;
- and
- a control circuit for sending commands to the drive circuit to control the voltage applied to the motor, wherein the voltage comprise at least one increasing stage when loading the tray and at least one decreasing stage when unloading the tray;
- wherein a waveform of the voltage for loading the tray and a waveform of the voltage for unloading the tray are different.
3 more elements
Dependencies are inferred from the claim text.