Abstract: A high-voltage semiconductor device structure is provided. The high-voltage semiconductor device structure includes a semiconductor substrate, a source ring in the semiconductor substrate, and a drain region in the semiconductor substrate. The high-voltage semiconductor device structure also includes a doped ring surrounding sides and a bottom of the source ring and a well region surrounding sides and bottoms of the drain region and the doped ring. The well region has a conductivity type opposite to that of the doped ring. The high-voltage semiconductor device structure further includes a conductor electrically connected to the drain region and extending over and across a periphery of the well region. In addition, the high-voltage semiconductor device structure includes a shielding element ring between the conductor and the semiconductor substrate. The shielding element ring extends over and across the periphery of the well region.

Abstract: A portable data storage device includes a control unit coupled via a predetermined interface with a computer having an operating system with user authority limits, and a memory divided into a segment I for storing related applications, a public segment II for temporarily storing instructions and data, and a hidden segment III for saving client data. In a method of accessing data via the portable data storage device, when the computer is to write data into or read data from the segment III, the data to be written or read is first temporarily stored in the segment II, and specific read or write instructions for a read/write level application interface are written into the segment II by the applications in the segment I and executed, so as to complete data exchange and access between the portable data storage device and the computer.

Abstract: A method of executing a default instruction set of a storage device for conveniently connecting the storage device to a computer includes the following steps: connecting a USB interface of the storage device to a USB interface of the computer; the computer using interface commands to determine a device class of the storage device; a controller of the storage device actuating a built-in Auto Dispatch program and returning a message to the computer that the connected device is a keyboard; the controller sending specific serial keyboard commands to the computer via the Auto Dispatch program; the controller resetting an interface class code setting thereof when the computer has received the specific serial keyboard commands; the computer using the interface commands to check the interface class code setting to identify the storage device; and the controller returning a message to the computer that the connected device is a mass storage device.

Abstract: A method of overcurrent protection for multi-slot flash memory card reader mainly includes integrating overcurrent protection circuit and power-supply circuit for the multiple slots of the card reader into one single control chip; and, when the overcurrent protection circuit detects an overcurrent at a particular slot, cutting off power supply to that particular slot of the card reader and enabling an overcurrent state register, so that a signal is provided to firmware in the control chip to display an icon of the card reader on a computer as a state indicating an abnormal condition. Whereby, the card reader and a flash memory card inserted therein, or other apparatus connected thereto would not be damaged when an overcurrent occurs, and a user may clearly know the exact point on the card reader where the overcurrent occurs.

Abstract: In a method of automatically logging in a website, a computer system is powered on and then automatically opens a browser and inputs a user's personal information to log in at least one website without any user operation. The method includes the steps of (1) initializing a computer system that allows connection of a removable storage device thereto, so that the computer system is able to automatically log in a website; (2) Determining whether there is any information in connection with websites allowing the user to log in, and entering any required information or automatically logging in the websites; and (3) ending the login.

Abstract: A portable data storage device includes a control unit coupled via a predetermined interface with a computer having an operating system with user authority limits, and a memory divided into a segment I for storing related applications, a public segment II for temporarily storing instructions and data, and a hidden segment III for saving client data. In a method of accessing data via the portable data storage device, when the computer is to write data into or read data from the segment III, the data to be written or read is first temporarily stored in the segment II, and specific read or write instructions for a read/write level application interface are written into the segment II by the applications in the segment I and executed, so as to complete data exchange and access between the portable data storage device and the computer.

Abstract: A method of self-detecting and dynamically displaying detected results for a card reader used to read flash memory cards includes the steps of sending out a detecting code to each card slot or any flash memory card inserted therein via detecting circuits provided on and controlled by a control chip in the card reader; storing a detected state code sent back by the detecting circuits in a state register of the control chip; sending the state code from the state register to a computer; comparing and determining the state code in the computer; displaying a current state of the card slot or the flash memory card inserted therein on a screen of the computer; and periodically repeating the self-detecting and displaying to always show the most current state of the card slots on the card reader or the inserted flash memory card.

Abstract: A method of self-detecting and dynamically displaying detected results for a card reader used to read flash memory cards includes the steps of sending out a detecting code to each card slot or any flash memory card inserted therein via detecting circuits provided on and controlled by a control chip in the card reader; storing a detected state code sent back by the detecting circuits in a state register of the control chip; sending the state code from the state register to a computer; comparing and determining the state code in the computer; displaying a current state of the card slot or the flash memory card inserted therein on a screen of the computer; and periodically repeating the self-detecting and displaying to always show the most current state of the card slots on the card reader or the inserted flash memory card.

Abstract: A method of overcurrent protection for multi-slot flash memory card reader mainly includes integrating overcurrent protection circuit and power-supply circuit for the multiple slots of the card reader into one single control chip; and, when the overcurrent protection circuit detects an overcurrent at a particular slot, cutting off power supply to that particular slot of the card reader and enabling an overcurrent state register, so that a signal is provided to firmware in the control chip to display an icon of the card reader on a computer as a state indicating an abnormal condition. Whereby, the card reader and a flash memory card inserted therein, or other apparatus connected thereto would not be damaged when an overcurrent occurs, and a user may clearly know the exact point on the card reader where the overcurrent occurs.

Abstract: A method of data transmission for transmitting data between a host and a consumptive electronic apparatus without USB interface via an interconnecting interface that has an end being a USB for connecting to the host. The method includes the steps of generating an instruction by the host; sending the instruction to the consumptive electronic apparatus without USB interface via the interconnecting interface; and verifying the instruction at the consumptive electronic apparatus without USB interface and then executing any movement requested by the instruction, and feeding back a signal of executing result to the host. Therefore, a consumptive electronic apparatus without USB interface may be connected to a host for data transmission at reduced cost.

Abstract: A portable data storage device mainly includes a universal serial bus (USB) connector; a volatile memory for reading, writing, and storing data; a control chip connected between the USB connector and the volatile memory for serving as a transmission interface with an external electronic apparatus; a charging battery for providing power needed by the volatile memory to store data; and a battery charging circuit connected between the USB connector and the charging battery for charging the charging battery, so that the portable data storage device has increased data processing speed and may be produced at lowered cost.

Abstract: A digital sound file playback reproducer includes a housing in which at least a connection port, a sound source output unit, and a processing unit are provided. The connection port is adapted to connect with an external recording medium having sound filed stored thereon. The processing unit picks up and processes the sound files in the externally connected recording medium, and sends the processed sound files to the sound source output unit. Since the digital sound file playback reproducer does not include an internal memory, a consumer of existing recording media, such as memory cards and USB flash disks, could buy it without wasting money in repeated memory.

Abstract: A portable data storage device allowing dynamic setting of disk type thereof includes a flash memory that includes at least two segments preset as a CD-ROM segment and a fixed type hard drive segment. When the portable data storage device is plugged in a processing unit of an electronic apparatus, one of the two segments having a non-applicable disk type is hidden depending on an operating system under which the processing unit operates, so that the processing unit may detect only another one of the two segments that has an applicable disk type. A method for dynamically setting an applicable disk type of the portable data storage device is also provided.

Abstract: A portable data storage device is characterized in having an internal file and a start program separately pre-recorded in predetermined segments on a flash memory of the device, an encryption mechanism for protecting the device against arbitrary access, and auto-execution ability like a compact disk. With these arrangements, it is ensured the start program is automatically executed without any user operation to play the internal file each time the portable data storage device is used. And, the internal file is effectively protected from deletion, unauthorized copy, or theft.