Abstract: A method for stopping a spindle motor of an optical disc drive includes the following steps. Firstly, in response to the receipt of a disabling command, the spindle motor of the optical disc drive is braked, so that a rotating speed of the spindle motor is reduced to be smaller than or equal to a predetermined rotating speed during a specified time period, wherein the predetermined rotating speed is greater than zero. Then, a preparatory stopping procedure of an optical pickup head is performed during the specified time period. Afterwards, the optical disc drive responds that the disabling command has been executed after the specified time period.

Abstract: A controlling method of an optical disc drive includes the following steps. After an optical disc is loaded into the optical disc drive, a start-up procedure is performed to acquire a disc parameter and a disc information of the optical disc. Then, the optical disc drive enters a ready state. If a command from the computer system is received within a predetermined time interval, the command is executed and the optical disc drive enters the ready state again. If no command is received within the predetermined time interval, the optical disc drive enters an idle state corresponding to the presence of the optical disc. Then, the disc parameter, the disc information and a power index tag are written into a non-volatile memory, and a power-interruptible event is issued to the computer system.

Abstract: A front panel of an optical disc drive is provided. The optical disc drive further includes a LED indicator for displaying a working status of the optical disc drive. The front panel includes a light-transmissible zone corresponding to the LED indicator. A thickness of the light-transmissible zone is smaller than an average thickness of the front panel. The light-transmissible zone is integrally formed with the front panel.

Abstract: A tray driving device of an optical disc drive in provided to comprising: a driving motor; a belt wheel, disposed on a driving shaft of the driving motor; a belt idler, connected to the belt wheel through a belt, wherein the belt idler has a belt groove for containing the belt, and a guiding inclined plane is protruded on the top of the belt idler; and a gear assembly, connected under the belt idler and connected to a tray.

Abstract: A position control method of an optical pickup head of an optical disc drive is provided. The optical disc drive has an optical pickup head for reading data from an optical disc and a step index for controlling the movement of the optical pickup head. The position control method includes: calculating a first position information of the optical pickup head according to the step index; reading an address information from the optical disc, calculating a second position information of the optical pickup head according to the address information; determining whether a difference between the first position information and the second position information is greater than a predetermined value; updating the step index when the difference is not greater than the predetermined value; moving the optical pickup head to an initial position when the difference is greater than the predetermined value, and setting the step index as zero.

Abstract: A tilt adjusting device for an optical pickup head (OPU) is fixed on a chassis of an optical drive. The device includes a first screw and a secondary guide rail. The secondary guide rail includes a guide rail part, a base part, an extension part, and an elastic element. The guide rail part is embedded into a rail notch of the OPU and the extension part has a first end and a second end connected with the base part and the guide rail part. A first compressible space is defined between the base part, the elastic element and the chassis. The first screw is penetrated through the base part and the first compressible space and screwed in the chassis. By changing a screwed depth of the first screw in a screw hole, an altitude of the guide rail part is correspondingly adjusted.

Abstract: A slim-type optical disc drive includes a casing and a tray. A first circuit board is disposed within the casing. A second circuit board is disposed on the tray. A spring switch is disposed on the second circuit board. A first end of the spring switch is fixed on the second circuit board. A resistor is connected between the first end of the spring switch and a first power source. A second end of the spring switch is extended outside the second circuit board. In a tray-out status, the second end of the spring switch is not contacted with any object, so that a first status signal is generated. In a tray-in status, the second end of the spring switch is contacted with a conducting zone of a second power source, so that a second status signal is generated.

Abstract: A slim-type optical disc drive includes a casing and a tray. A first circuit board is disposed within the casing. A second circuit board is disposed on the tray. A spring switch is disposed on the second circuit board. A first end of the spring switch is fixed on the second circuit board. A resistor is connected between the first end of the spring switch and a first power source. A second end of the spring switch is extended outside the second circuit board. In a tray-out status, the second end of the spring switch is not contacted with any object, so that a first status signal is generated. In a tray-in status, the second end of the spring switch is contacted with a conducting zone of a second power source, so that a second status signal is generated.

Abstract: A control method for a spindle motor in disk drive including a tray for carrying a disk, a detect switch movable to different inclined positions for detecting different positions of the tray during tray ejection and retraction operation, a firmware for receiving signals transmitted by the detect switch upon reaching the different inclined positions so as to start up the spindle motor in advance.

Abstract: A front panel of an optical disc drive is provided. The optical disc drive further includes a LED indicator for displaying a working status of the optical disc drive. The front panel includes a light-transmissible zone corresponding to the LED indicator. A thickness of the light-transmissible zone is smaller than an average thickness of the front panel. The light-transmissible zone is integrally formed with the front panel.

Abstract: An optical disc drive including a case, a tray, a traverse, a plurality of washers, a plurality of fastening elements and a plurality of adjustment elements is provided. The tray is suitable for carrying an optical disc and includes a plurality of hollow alignment pillars. The traverse is disposed on the tray and includes a plurality of alignment holes for containing the corresponding hollow alignment pillars. Each washer is disposed in each of the alignment holes and leans between each of the alignment holes and each of the hollow alignment pillars. The fastening elements lock the traverse onto the tray. Each adjustment element leans between each of the washers and the tray, and bears an engagement pressure.

Abstract: An optical disk drive including a housing, a top cover, a spindle motor and a supporting element is provided. The housing has an accommodating space. The top cover covers the accommodating space. The spindle motor is disposed within the accommodating space and has a shaft. The supporting element is disposed between an end of the shaft and the top cover. When the top cover is deformed, the shaft props up the top cover through the supporting element.

Abstract: A method of the interactive features on a DVD utilizing restricted user inputs e.g. reduced number of key pad buttons. The DVD menu may be collapsed to form an indexed linear list of the menu buttons. A user then sequentially navigates through the menu using a one or two directional input to find the desired menu choice, which is then selected using a predetermined user input.

Abstract: An optical disk drive including a housing, a top cover, a spindle motor and a supporting element is provided. The housing has an accommodating space. The top cover covers the accommodating space. The spindle motor is disposed within the accommodating space and has a shaft. The supporting element is disposed between an end of the shaft and the top cover. When the top cover is deformed, the shaft props up the top cover through the supporting element.

Abstract: A tilt adjusting device for an optical pickup head (OPU) is fixed on a chassis of an optical drive. The device includes a first screw and a secondary guide rail. The secondary guide rail includes a guide rail part, a base part, an extension part, and an elastic element. The guide rail part is embedded into a rail notch of the OPU and the extension part has a first end and a second end connected with the base part and the guide rail part. A first compressible space is defined between the base part, the elastic element and the chassis. The first screw is penetrated through the base part and the first compressible space and screwed in the chassis. By changing a screwed depth of the first screw in a screw hole, an altitude of the guide rail part is correspondingly adjusted.

Abstract: A tray driving device of an optical disc drive in provided to comprising: a driving motor; a belt wheel, disposed on a driving shaft of the driving motor; a belt idler, connected to the belt wheel through a belt, wherein the belt idler has a belt groove for containing the belt, and a guiding inclined plane is protruded on the top of the belt idler; and a gear assembly, connected under the belt idler and connected to a tray.

Abstract: The present invention discloses a slim optical disc drive comprising a case with an upper cover and a lower cover, a disc tray for loading and unloading an optical disc, a first circuit board disposed on the lower cover, a second circuit board disposed on the disc tray, and a flexible flat cable for connecting the first circuit board and the second circuit board. The flexible flat cable comprises a fixed portion and a movable portion, and a patch is adhered to the movable portion of the flexible flat cable. The patch has a first end and a second end, and the width of the first end is larger than that of the second end.

Abstract: A slot-in optical disc drive is provided to comprise a driving element moveably disposed in the optical disc and capable of moving toward a disc loading direction and a disc unloading direction, wherein the driving element has a loading drive groove; a disc loading element pivoted in the optical disc drive, wherein the disc loading element has a loading driven pin for operating with the loading drive groove; a disc unloading element pivoted in the optical disc drive; and an elastic element used for providing an elastic force on the disc unloading element.

Abstract: An optical pick-up head module includes a base, an optical pick-up head adjusting mechanism, two guiding rods, a spring and an optical pick-up head slidably disposed on the guiding rods. The optical pick-up head adjusting mechanism includes a protrusion, a pillar and an adjusting element. The protrusion connected to the base has a sliding slot. The pillar having first and second flat surfaces is slidably disposed in the sliding slot. The first flat surface contacts an inner wall of the sliding slot. The adjusting element is screwed on the base. The spring disposed on the base pushes the pillar to contact the adjusting element by the second flat surface. When the adjusting element is rotated, the adjusting element pushes the pillar toward the base.

Abstract: An optical disk drive with a protection design against a broken disk comprises the following devices of: a chassis; an upper cover mounted above the chassis and having a bended part on a front end thereof; a tray mounted between the chassis and the upper cover for supporting an optical disk; a faceplate mounted on the front end of the upper cover; a door mounted on the front end of the tray; a double-layered retaining plate having a first retaining plate and a second retaining plate located respectively on both front and rear sides of the bended part. The bended part is located behind the faceplate, and a space is formed between the bended part and the faceplate.