Abstract: A process includes preparing the metal frame that is overlaid with an adhesive. The adhesive is heated thereafter, and the adhesive becomes solidified and thus engaged securely with the metal frame. The adhesive is injection molded thereafter, and the molten resin is delivered onto the solidified adhesive to melt the adhesive so as to enable the adhesive to adhere the resin, and after the adhesive and the resin become solid, the resin forms a plastic member securely bound with the metal frame, thus forming the finished product.

Abstract: A video output system with co-layout structure includes an internal video graphics array (VGA) interface, an external VGA interface and a video output interface. The two VGA interfaces are connected to a connection point through individual leads respectively, then to the video output interface at the connection point through a common lead. The video output system further includes two switches disposed between the internal VGA interface and the connection point and between the external VGA interface and the connection point respectively for blocking the signal stub from flowing to the two VGA interfaces, thereby enhancing the signal quality.

Abstract: A hard disk protection system detects an X-axis travel, a Y-axis travel, and a Z-axis travel of a hard disk, and converts them into travel signals to calculate whether a threshold value is reached through the travel signals an algorithm. Reaching the threshold value indicates that the hard disk shakes heavily and the operation of the hard disk should be aborted. Then, a control module is required to send an interrupt signal informing a process module to abort reading the hard disk, so as to prevent the hard disk from being damaged due to the over-high shaking speed.

Abstract: An overheated protection circuitry for a central processing unit (CPU) is provided, which is used when the working temperature of the CPU is higher than a first preset temperature or a second preset temperature. The CPU and a thermal module send out an abnormal signal respectively to inform a chipset (Southbridge chip) to switch off a power supply. The overheated protection circuitry further includes a control module. The control module may synchronously receive the abnormal signal sent by the CPU and the thermal module and switch off the power supply when the working temperature of the CPU is overheated. Therefore, even though the chipset is breakdown and unable to execute a switch-off power supply action, the control module can take over to execute the action of switching off the power supply.

Abstract: System for automatically performing a frequency response equalization tuning utilizes a central processing unit (CPU) in an electronic device to simulate and generate a standard sound signal having a predetermined bandwidth through a sound control circuit in order for a microphone to receive the signal for sending back to the CPU through the sound control circuit performing a frequency response matching with respect to a predetermined ideal frequency response data, calculating a set of equalization tuning gains, and storing the gains in a digital equalizer for automatically performing a frequency response equalization tuning on the speaker.

Abstract: The present invention discloses a differential audio device applicable to notebook computers. The device uses differential signal characters to improve the audio signal quality and its transmission distance. The device contains at least an audio controller to output audio signals, a single-ended signal to differential signal converter to convert audio signals into differential signals, a differential signal to single-ended signal converter to convert differential signals into audio signals for output.