Abstract: A portable electronic device includes an earphone jack device for connecting a plug of an earphone and a main circuit board. The main circuit board includes an audio signal processor module connected to the earphone jack device, an MSM module connected to the audio signal processor module, and a PMIC module connected to the earphone jack device. The MSM module generates a first bias voltage inputted into the audio signal processor module to actuate the audio signal processor module to play audio signals, and the PMIC module generates a second bias voltage inputted to the earphone jack device to actuate the earphone connected to the earphone jack device.

Abstract: A system for display images comprising a thin film transistor array substrate is disclosed. The system for display images comprises a substrate having a pixel area, a source/drain region overlying the substrate within an active layer in the pixel area, a bottom electrode overlying the substrate in the pixel area, a top electrode overlying the bottom electrode, a first dielectric layer disposed on the active layer, a second dielectric layer disposed on the first dielectric layer, wherein the second dielectric layer is disposed between the bottom electrode and the top electrode and a gate disposed overlying the active layer, wherein the first and second dielectric layers are interposed between the gate and the active layer.

Abstract: A HDD tray structure is disclosed. The HDD tray structure includes a tray housing, a flexible printed circuit board (FPC) installed on the tray housing, and at least one indicator, wherein one end of the FPC has a metal pad electrically connected to a connector of a printed circuit board, and the other end of the FPC is in electrical contact with the indicator, so as to control the on/off state of the indicator.

Abstract: A method of command entry for an electronic device. First, a single button is pressed to enter the electronic device into a multi-function entry state, indicated by a first light status. The button is pressed again within a first predetermined period after entering the multi-function entry state, corresponding to one command. The light indicator displays a second light status corresponding to the command. Finally, the button is pressed again to confirm the command within a second predetermined period.

Abstract: An automatic retractable device of a flexible printed circuit board is described. The automatic retractable device of the flexible printed circuit board comprises a bracket, two elastic components and two rollers. By combining the elastic components, the rollers and the flexible printed circuit board, the flexible printed circuit board can revert to an original position after the flexible printed circuit board is used.

Abstract: A removable hard disk module is described. The removable hard disk module has a module sidewall, a first slide rail, and a second slide rail. The first slide rail and the second slide rail are fixed on the module sidewall and the second slide rail is disposed above the first slide rail. The first slide rail is made of a linear material such as a piano wire or the like. The second slide rail is directly formed on the module sidewall or made of the linear material. The removable hard disk module further includes a handle with a withdrawal post to push a support stud on a module fixing device for withdrawing the removable hard disk module from the module fixing device when the handle is opened.

Abstract: A method and system for the testing of multiple elements in a communications network. The method may include using a test host that has both control and data input/output capabilities. The test host may send a signal over the network via one communication device, such as a mobile station, that is connected to and controlled by the test host. A resulting signal may then be received at the communication device or at a second communication device, which may be another mobile station, that is connected to and controlled by the test host. A comparison of the signal sent into the network with the signal received from the network may be used to verify proper operation of any elements in the network.

Abstract: A slidable motherboard tray structure is disclosed for holding and moving a motherboard. The slidable motherboard tray structure is featured in using leverage principle to design handle elements pivotally connected to a motherboard tray housing, so that pushing force is generated between the respective handle elements and supporting elements, thereby enabling the motherboard located in the motherboard tray housing to slide to a predetermined position, thus achieving the purposed of automatically positioning and saving force.

Abstract: A method for controlling a sled-home operation in an optical disc drive by driving a sled motor. The method includes two stages: a motor-starting stage and a sled-home-driving stage. In the motor-starting stage, the sled motor is driven at a first target speed. In the sled-home-driving stage, the target of the sled motor is gradually changed to a second target speed greater than the first target speed. The second target speed is less than or equal to the speed Rm that corresponds to a maximum allowable excitation frequency for the sled motor to overcome a dynamic friction torque and greater than the speed Rs that corresponds to a maximum allowable excitation frequency for the sled motor to overcome a static friction torque.

Abstract: A HDD tray structure is disclosed. The HDD tray structure includes a tray housing, a flexible printed circuit board (FPC) installed on the tray housing, and at least one indicators, wherein one end of the FPC has a metal pad electrically connected to a connector of a printed circuit board, and the other end of the FPC is in electrical contact with the indicator, so as to control the on/off state of the indicator.

Abstract: An automatic retractable device of a flexible printed circuit board is described. The automatic retractable device of the flexible printed circuit board comprises a bracket, two elastic components and two rollers. By combining the elastic components, the rollers and the flexible printed circuit board, the flexible printed circuit board can revert to an original position after the flexible printed circuit board is used.

Abstract: A removable hard disk module is described. The removable hard disk module has a module sidewall, a first slide rail, and a second slide rail. The first slide rail and the second slide rail are fixed on the module sidewall and the second slide rail is disposed above the first slide rail. The first slide rail is made of a linear material such as a piano wire or the like. The second slide rail is directly formed on the module sidewall or made of the linear material. The removable hard disk module further includes a handle with a withdrawal post to push a support stud on a module fixing device for withdrawing the removable hard disk module from the module fixing device when the handle is opened.

Abstract: A disc drive, which inputs and outputs signals by an earphone jack. The signal processing circuit includes a digital-to-analog converter, a memory for storing firmware programs, a signal switch device, and an earphone jack coupled to the signal switch device. When the signal switch device is coupled to the digital-to-analog converter, an audio signal is output from the disc drive through the earphone jack. When the signal switch device is coupled to the signal processing circuit, a digital signal is input or output to/from the disc drive through the earphone jack.

Abstract: An electrostatic discharge protection circuit receives an electrostatic discharge current generated by a first printed circuit board and conducted to a first grounding line of the first printed circuit board. The electrostatic discharge protection circuit includes a flexible cable having a connecting line with one end connected to the first grounding line, a second printed circuit board including a fixed component, an electrostatic discharge protection path electrically connected between another end of the connecting line and the fixed component, and a second grounding line electrically connected to the fixed component.

Abstract: An electrostatic discharge protection circuit includes a first printed circuit board including a first grounding line, a flexible cable including a connecting line having one end connected to the first grounding line, an electrostatic discharge protection path having one end connected to the first grounding line, a second printed circuit board including a second grounding line electrically connected to another end of the connecting line, and a housing connected to another end of the electrostatic discharge protection path.

Abstract: A method of command entry for an electronic device. First, a single button is pressed to enter the electronic device into a multi-function entry state, indicated by a first light status. The button is pressed again within a first predetermined period after entering the multi-function entry state, corresponding to one command. The light indicator displays a second light status corresponding to the command. Finally, the button is pressed again to confirm the command within a second predetermined period.

Abstract: A disc drive, which inputs and outputs signals by an earphone jack. The signal processing circuit includes a digital-to-analog converter, a memory for storing firmware programs, a signal switch device, and an earphone jack coupled to the signal switch device. When the signal switch device is coupled to the digital-to-analog converter, an audio signal is output from the disc drive through the earphone jack. When the signal switch device is coupled to the signal processing circuit, a digital signal is input or output to/from the disc drive through the earphone jack.