Abstract: An automated key pressing device includes a loading stage, a base, a transmission module, two key pressing modules. The base is located at one side of the loading stage. The transmission module is reciprocatedly slidable on the base. One of the key pressing modules is disposed on the transmission module, and extends outwardly towards the loading stage for pressing one key of a keyboard by the transmission module. The other key pressing module is located on the base and extends outwardly towards the loading stage for pressing another key of the keyboard. The one of the key pressing modules is more prominently extended outwardly than the other. The control unit electrically connected to the key pressing modules and the transmission module.

Abstract: An automated key pressing device includes a loading stage, a base, a transmission module, two key pressing modules. The base is located at one side of the loading stage. The transmission module is reciprocatedly slidable on the base. One of the key pressing modules is disposed on the transmission module, and extends outwardly towards the loading stage for pressing one key of a keyboard by the transmission module. The other key pressing module is located on the base and extends outwardly towards the loading stage for pressing another key of the keyboard. The one of the key pressing modules is more prominently extended outwardly than the other. The control unit electrically connected to the key pressing modules and the transmission module.

Abstract: An electronic device is disclosed, which includes a touch display module, a frame for placing the touch display module, plural elastic pieces extended from a sidewall of the frame, a casing, a fastener, and plural adjusting screws. The fastener fastens the frame to the casing. The adjusting screws are inserted in the elastic pieces and are screwed in the casing. The depth of the adjusting screws screwed in the casing can be adjusted for adjusting a relative height between the touch display module and the casing.

Abstract: An electronic device is disclosed, which includes a touch display module, a frame for placing the touch display module, plural elastic pieces extended from a sidewall of the frame, a casing, a fastener, and plural adjusting screws. The fastener fastens the frame to the casing. The adjusting screws are inserted in the elastic pieces and are screwed in the casing. The depth of the adjusting screws screwed in the casing can be adjusted for adjusting a relative height between the touch display module and the casing.

Abstract: The present invention relates to a mechanism for guiding airflows within an optical disc drive, in which the optical disc drive comprises a chassis having a side wall and a tray for loading or unloading a disc. The guide mechanism of the present invention includes at least one guide passage which is protruded outwardly from the side wall of the chassis and has two guiding oblique surfaces at its both ends. Further, the guide passage is positioned on an extended line of a diameter of the disc normal to the side wall of the chassis. The airflows produced by the revolving disc is guided to flow through the guide passage. According to the guide mechanism the shocks, jarring, and noise of the optical disc drive is minimized.

Abstract: A tilt adjustment device for adjusting tilt of a left guide bar with respect to a right guide bar, and includes a holding seat and a cylindrical-shaped bushing disposed rotatably within the holding seat. The bushing defines a bar-retention hole to permit extension of the left guide bar therethrough, and has a turning portion defining a first axis and an insert portion that extends eccentrically from the turning portion and that defines a second axis parallel to the first axis. Rotation of the cylindrical-shaped bushing relative to the holding seat results in a radial movement of the turning portion, which, in turn, moves the first axis toward and away from the second axis of the insert portion.

Abstract: A method and system for measuring the signal deviation are applied to an optical recording/reproducing apparatus. The optical recording/reproducing apparatus comprises an optical pickup head for receiving Differential Push Pull (DPP) signals reflected from an optical recording medium to trace the tracks on the surface of the optical recording medium. The DPP signal comprises a Main beam Push Pull (MPP) signal and a Sub-beam Push Pull (SPP) signal. The method firstly receives the MPP signal and the SPP signal to generate an MPP waveform and an SPP waveform separately. Then, the MPP waveform and the SPP waveform are combined to generate an amplitude waveform function. Finally, according to the amplitude waveform function, a phase difference between the MPP signal and the SPP signal is estimated. An adjusting direction can be further determined according to a relative position between the SPP waveform and the MPP waveform.

Abstract: A disc positioning structure includes a driver, a turntable and a positioning element. The turntable is disposed on the driver and used for placing a disc driven by the driver. The positioning element is disposed on the turntable and the disc is clamped onto the positioning element. The positioning element includes a first ring, a second ring and a plurality of spokes. Wherein, the second ring resides inside the first ring while the spokes are connected between the first ring and the second ring. The disc positioning structure provided by the present invention is able to compensate the positioning error of the disc and to reduce the production cost.

Abstract: The present invention provides a heat dissipation member for use in the optical disk drive. The present invention includes an outer frame and a chassis. The chassis has a drive module, a pickup module and two guide rods. A heat dissipation member is disposed on the pickup module and is in contact with a laser diode of the pickup module. When the drive module spins the optical disk at a rotational speed, an air flow is produced due to spinning of optical disk. A part of the air flow is directed to flow through the laser diode by the heat dissipation member so that excess heat generated by the laser diode is efficiently dissipated.

Abstract: A disc positioning structure includes a driver, a turntable and a positioning element. The turntable is disposed on the driver and used for placing a disc driven by the driver. The positioning element is disposed on the turntable and the disc is clamped onto the positioning element. The positioning element includes a first ring, a second ring and a plurality of spokes. Wherein, the second ring resides inside the first ring while the spokes are connected between the first ring and the second ring. The disc positioning structure provided by the present invention is able to compensate the positioning error of the disc and to reduce the production cost.

Abstract: A disk recording/reading apparatus for recording/reading a disk is provided. The disk recording/reading apparatus includes a case, a tray, a turntable and an optical pickup unit. The tray is inside the case and has a concave trough and a concave trough extension portion. The concave trough is used for accommodating a disk, and the concave trough extension portion stretches from the concave trough to a side of the tray front end and has an opening passing through the tray. The turntable is disposed below the tray for driving the disk. Wherein, at least a spinning airflow below the disk is suitable for being expelled from the opening of the concave trough extension portion to reduce the noise caused by air turbulence and the vibration during disk spin.

Abstract: An automatic ball balancing system for an optical disk reading device has a rotor mechanism that has a concave annular track formed on the rotor, with at least one ball placed on the annular track to perform automatic balancing. A surface with a low friction coefficient is also provided on the annular track in the gravity direction of the balls to reduce the movement resistance between the ball(s) and the annular track. In the meantime, the stable rotation speed of the rotor and the system phase angle of the ball(s) when the rotor reaches a stable rotation speed are also changed. One way of effecting this change is to bond or coat a material with a low friction coefficient on the annular track in the gravity direction of the balls. In this way, the balancing effect of the automatic ball balancing system can be improved.

Abstract: A method for reducing the stable rotation speed of an automatic ball balancing system is used with an automatic ball balancing system that has a rotor that has an annular track, with at least one ball provided for rotation inside the track. First, an optimum rotation speed ws that is between the unstable critical rotation speed wc of a ball and a working rotation speed w is first determined. In the next step, the rotor is accelerated to the optimum rotation speed ws. Next, the acceleration of the rotor is reduced until the balls are stationary relative to the track, and then the rotor is accelerated to the working rotation speed w.

Abstract: An optical disc recording device including a housing, an optical read/write module and a transmission module. Both the optical read/write module and the transmission module are disposed inside the housing. Besides, the housing includes a bottom housing and a top cover. The inner surface of top cover has a first protrusion and a second protrusion, which together can stabilize the flow-field in the optical disc recording device so that the optical disc can rotate stably.

Abstract: A tilt adjustment device for adjusting tilt of a left guide bar with respect to a right guide bar, and includes a holding seat and a cylindrical-shaped bushing disposed rotatably within the holding seat. The bushing defines a bar-retention hole to permit extension of the left guide bar theretrhough, and has a turning portion defining a first axis and an insert portion that extends eccentrically from the turning portion and that defines a second axis parallel to the first axis. Rotation of the cylindrical-shaped bushing relative to the holding seat results in a radial movement of the turning portion, which, in turn, moves the first axis toward and away from the second axis of the insert portion.

Abstract: A method and system for measuring the signal deviation are applied to an optical recording/reproducing apparatus. The optical recording/reproducing apparatus comprises an optical pickup head for receiving Differential Push Pull (DPP) signals reflected from an optical recording medium to trace the tracks on the surface of the optical recording medium. The DPP signal comprises a Main beam Push Pull (MPP) signal and a Sub-beam Push Pull (SPP) signal. The method firstly receives the MPP signal and the SPP signal to generate an MPP waveform and an SPP waveform separately. Then, the MPP waveform and the SPP waveform are combined to generate an amplitude waveform function. Finally, according to the amplitude waveform function, a phase difference between the MPP signal and the SPP signal is estimated. An adjusting direction can be further determined according to a relative position between the SPP waveform and the MPP waveform.

Abstract: The present invention provides a heat dissipation member for use in the optical disk drive. The present invention includes an outer frame and a chassis. The chassis has a drive module, a pickup module and two guide rods. A heat dissipation member is disposed on the pickup module and is in contact with a laser diode of the pickup module. When the drive module spins the optical disk at a rotational speed, an air flow is produced due to spinning of optical disk. A part of the air flow is directed to flow through the laser diode by the heat dissipation member so that excess heat generated by the laser diode is efficiently dissipated.

Abstract: A method for determining an emitting angle of an optical pickup head of an optical drive. A jitter inspection device comprises a jig, simulating and adjusting a tilt angle of the optical pickup head, and a jitter meter installed on the jig, inspecting jitter values at different tilt angles. A quadratic surface equation decreases the data points required for measurement to five, and enables product efficiency to raise 17% , such that the minimum jitter value and optimum tilt angle can be obtained quickly.

Abstract: An optical disk adjusting assembly for an optical disk reading device. The optical disk adjusting assembly includes a chassis, a first guide rod, a second guide rod, an adjustable positioning element, a clamping plate, a disk rotating module and a disk reading module. The first guide rod and the second guide rod are respectively disposed on the chassis. The adjustable positioning element constrains two ends of the first guide rod and one end of the second guide rod. The clamping plate is secured to the chassis by screws and used to restrain a portion of the adjustable positioning element. Thus, the adjustable positioning element can constrain and adjust the two guide rods efficiently.

Abstract: A method for determining an emitting angle of an optical pickup head of an optical drive. A jitter inspection device comprises a jig, simulating and adjusting a tilt angle of the optical pickup head, and a jitter meter installed on the jig, inspecting jitter values at different tilt angles. A quadratic surface equation decreases the data points required for measurement to five, and enables product efficiency to raise 17% , such that the minimum jitter value and optimum tilt angle can be obtained quickly.