Abstract: A device for processing a control action from a user in an electronic apparatus including a controller and a detection circuit. The controller outputs a voltage signal having a voltage deviation when the user performs the control action to the electronic apparatus. The detection circuit receives the voltage signal and outputs an interrupt signal when the voltage deviation occurs to inform the electronic apparatus the control action.

Abstract: A touch-point detecting method is applicable to a resistive touch panel with a touch-point detecting apparatus comprising a plurality of switches. By selectively enabling and disabling those switches, the present method comprises the steps of determining whether an external force is exerted on the touch panel, determining whether the external force is within a predetermined threshold, producing X-coordinate, and producing Y-coordinate.

Abstract: The invention is a frequency switching method of a CPU in electronic devices. The electronic device is comprised of a display screen and the CPU. The screen display changes according to the pixel clock. The method lowers the frequency of the pixel clock, switching the CPU frequency, and then restores the frequency of the pixel clock.

Abstract: A handheld electronic device (10) mainly consists of a cover unit (12), a base unit (14) and a sliding mechanism (100). The base unit has a supporting surface (14d). The cover unit has a supporting surface (12b) which is arranged on the supporting surface of the base unit in a way that the cover unit is capable of sliding with respect to the base unit between closed and open positions. The sliding mechanism is arranged between the cover unit and the base unit in order to guide the relative sliding between the cover unit and the base unit. The sliding mechanism substantially consists of a pushing positioner (110) and a sliding slot (120), which are respectively arranged at the base unit and the cover unit. The pushing positioner consists of a sleeve (112), a ball (114) received in the sleeve, a resilient element (116) received in the sleeve and pushing the ball so that the ball has a portion engaging in the slot and a round plate (118) engaging in the sleeve.

Abstract: A method and system of managing virtual memory for a flash-memory system. Logical blocks in a buffer are used to store data copied from a physical block in a flash-memory. An operating system searches data in the buffer first. If the data is in the buffer, it is accessed. If not, the operating system searches for the data in the flash memory, meanwhile writing a logical block having a dirty flag back to a logical block.

Abstract: A Personal Digital Assistant (PDA) with retractable stylus comprises a retractable stylus, a housing, a stylus slot, and a push portion, wherein a contact pad is attached to the inner side of the push portion. The retractable stylus comprises a pen shaft having a release button, a pen body having an opening, and a spring situated inside the pen body. When an external force is applied to the pen shaft downward, the spring is compressed until the opening holding the release button; thus, the stylus is shortened. When the release button is set free from the opening, the spring elasticity ejects the pen shaft upward; thus, the stylus returns to the full-length condition. If the stylus is kept in the stylus slot, an external force applied to the push portion can make the contact pad press the release button; so the pen shaft is ejected upward by spring elasticity.

Abstract: An antenna architecture permitting tri-band and quad-band transmission and reception of GSM standardized frequencies in a mobile unit with a required gain without increasing power consumption. The mobile unit utilizes a control circuit to unify a first antenna and a second antenna, wherein the first antenna can operate in a first frequency and a second frequency and the second antenna can operate in a third frequency and a forth frequency. The control circuit includes a phase shift circuit for each antenna. The phase shift circuits prevent each antenna from loading the other antenna effectively eliminating excessive VSWR to increase gain.

Abstract: A personal digital assistant with static electricity preventing function, comprising: a metallic or electroplated chassis installed in the personal digital assistant serving as the grounding for the personal digital assistant; a touch panel module installed on the chassis; and a metallic shielding piece installed on the touch panel module and is equipped with a grounding section on the side, of which, the grounding section is connected to the chassis dispersing electrostatic charges, meanwhile, fixes the touch panel module firmly to the chassis.

Abstract: A buckling-up structure for latching a battery lid (3) to a casing (2) of a PDA is disclosed. The battery lid (3) is used for covering a battery accommodation groove (5). The structure comprises a latching lock (9) forming a plurality of wedging hooks (94) thereon, a plurality of wedging hooks (32, 34) on two sides of the battery lid (3), respectively. An elastic body (8) is used to exert a pushing force to the latching lock. An operation button (7) is secured to the latching lock, whereby when the operation button is moved the latching lock and the elastic body move correspondingly. When the battery lid is locked to the casing, the wedging hooks (32) engage in recessing holes (52) of the casing, and the wedging hooks (34) engage with the wedging hooks (94).

Abstract: A planting device for planting solder balls onto a chip includes a main board with a plurality of apertures for accommodating solder balls, and a fixture for fixing the chip under the main board. The chip is coated with a layer of adhesive for adhering the solder balls accommodated inside the apertures onto the chip.

Abstract: A process for forming an interface (106) between a plated and a non-plated area (102, 104) on the surface of a plastic component (100) is disclosed. First, an anti-plating layer (110) is formed over the surface of the plastic component. Thereafter, a low-power laser beam (10) is used to remove a portion of the anti-plating layer and to form an interface between the plated area and the non-plated area. A seeding layer (120) is formed on the plated area so that the plated area is electrically conductive. Finally, a metallic layer (130) is electrically plated over the seeding layer. The metallic layer connects with the anti-plating layer via the interface. The cost of producing the anti-plating layer is low. Moreover, since the laser etching operation is able to produce a high-quality interface boundary between the plated and the non-plated area, yield of the process is improved.

Abstract: A keystroke structure (3) for an electronic device which includes a shell (2) defining an opening (22). The keystroke structure comprises a cap (32) made of hard plastics such as ABS resin, a flange (34) fixed to a bottom of a periphery of the cap, wherein the flange is made of a material, such as rubber which is more elastic than that for forming the cap. The cap has a portion extending upward through the opening. A rod (42) extends downwardly from a bottom of the cap. A switch assembly (4) consisting of four first switches (44) for cursor direction control and a second switch (46) for “enter” control. The first switches are activated by the rod when the cap is titled, and the second switch is activated by the rod when the cap is vertically depressed. When the cap is titled to activate one of the first switches, the flange engage with a bottom face of the shell.

Abstract: The present invention is to provide a method for simulating a joystick of a computer by means of a portable electronic device, comprising the steps of in response to interconnecting the portable electronic device and the computer and receiving a confirmation instruction for activating a joystick simulation, causing a CPU of the portable electronic device to perform the steps of initializing the communication interface, sending a joystick ID to the computer, and causing the CPU to set a plurality of keys on a keypad of the portable electronic device as a plurality of game keys and a game interrupt key after confirming the computer has received the joystick ID so as to finish task of simulating the portable electronic device as the joystick of the computer.

Abstract: An affixing device is used for affixing together a front cover (306a), a back cover (306b), and an extra battery unit (304) of a personal digital assistant (300). The affixing device includes a first screw (204(1)) and a second screw (202(1)), wherein the first screw is used to penetrate through the back cover and to firmly tighten onto the front cover, so that the front cover and the back cover are affixed together. The second screw is used to penetrate through the extra battery unit and firmly tighten on the first screw. As a result, the extra battery unit is affixed to the back cover.

Abstract: A recharge apparatus for holding the rechargeable device and battery includes the cradle top and the cradle base. The cradle top includes the elastic gate, the battery-fixing clip, and the charge area. The elastic gate is an opening for inserting the rechargeable battery, and capable of rebounding against pressure so that the elastic gate does not clip the user's finger during operation, and also enhances the appearance as well as being dust-proof. The battery-fixing clip is used for clipping the rechargeable battery tightly. The charge area is an inserting area for charging the rechargeable devices, and has a stand pin to hold the rechargeable devices steadily by inserting the stand pin into the bottom of the rechargeable device. The cradle base assembled with the cradle top includes the elastic joint and recharge PCB (printed circuit board). One end of the elastic joint is designed as the upward curve to touch the rechargeable battery.

Abstract: A structure for a handheld device with a function of electrostatic discharge (ESD) protection has a circuit member (230), a displaying member (240), and a conductive supporting frame (250) with a hollow region (251). The circuit member and the displaying member are affixed to the conductive supporting frame at the hollow region to construct a subassembly (300). The subassembly is then mounted in a housing (202) consisting of upper and lower housings (210,212) at a location that the conductive supporting frame is just beside a gap (203) between the upper and lower housings. ESD-sensitive components (231,232) on the circuit member and the displaying member are surrounded by the conductive supporting frame, whereby ESD entering the housing via the gap which may cause a harm to the ESD-sensitive components and the displaying member is absorbed by the supporting frame and transmitted to ground via an electrical connection between the supporting frame and ground trace of the circuit member.