Abstract: A foldable mouse is disclosed. The foldable mouse includes a mouse body, a support portion, and a pivoting portion for connecting the support portion and the mouse body. The mouse body has a hollow surface and a sensing surface neighboring the hollow surface. The sensing surface is in contact with a reflection plane, and the hollow surface forms a cavity on the mouse body. The support portion can be contained in the cavity.

Abstract: A method for negotiating keyboard commands between a computer and an external keyboard is provided. The computer and the external keyboard have respective NL (number lock) status. When the external keyboard is pressed, the external keyboard act as the following mechanics. When NL status of the computer is “Off” and NL status of the external keyboard is “On”, and a time internal between adjacent serially-pressed numeric keys of the external keyboard is less than a predetermined time period, a key code of NL on the external keyboard is firstly sent to alter NL status of the computer from “Off” to “On”, key codes of pressed numeric keys of the external keyboard are secondly sent to the computer, and the key code of NL on the external keyboard is finally sent to alter NL status of the computer from “On” to “Off”.

Abstract: The invention provides a wireless transmission device, including a first circuit board, a second circuit board and a third circuit board. The first circuit board at least disposes more than one electronic elements. The second circuit board has an antenna, and the antenna is electrically connected to the first circuit board. The second circuit board is arranged at a predetermined angle to the first circuit board to enhance the receiving ability. The third circuit board is connected to the first circuit board and disposes a USB connector electrically connected to the first circuit board so that the change in form of the device can be easily made.

Abstract: The invention provides a wireless transmission device, including a first circuit board, a second circuit board and a third circuit board. The first circuit board at least disposes more than one electronic elements. The second circuit board has an antenna, and the antenna is electrically connected to the first circuit board. The second circuit board is arranged at a predetermined angle to the first circuit board to enhance the receiving ability. The third circuit board is connected to the first circuit board and disposes a USB connector electrically connected to the first circuit board so that the change in form of the device can be easily made.

Abstract: A computer mouse is described. The main body has a base part and a movable part. The movable part is slidingly connected with the base part and the movable part slides along a plane that is parallel to the base part. A cover is pivotally connected with the main body by end portions thereof such that the cover is swiveled relative to the main body. An inner wall of the cover has a convex surface. When the movable part is in contact with the convex surface, unconnected end portions of the main body and the cover form a greater height than the pivotally connected end portions of the main body and the cover do.

Abstract: An input devices includes a switch unit for selecting one of a plurality of application modes, the switch unit outputting a first signal in response to a selection made by a user with respect to the application mode; at least one hotkey, each hotkey outputting a second signal in response to an activation of hotkey by the user; and a control unit for outputting a third signal in response to the first signal and the second signal to enable execution of the actuated hotkey under the selected application mode.

Abstract: A control method of an input device is provided. Input signals are received and whether the input device is in a sustained mode is determined. A reference frequency of the input signals is calculated. The reference frequency may be the maximum frequency or the average frequency of the input signals. Output signals are transmitted lastingly when the input device is in the sustained mode. The frequency of the output signals is proportional to the reference frequency. A control system of the input device is also provided.

Abstract: An expandable multi-computer switching device includes a master switching module and a slave switching module. The master switching module includes a transmission interface, a plurality of ports coupled to the transmission interface, a hub device coupled between the transmission interface and the plurality of ports, and a master control unit coupled to the hub device. The slave switching module includes a first transmission interface coupled to the transmission interface, a second transmission interface coupled to an interface of a computer system, a third transmission interface coupled to the first transmission interface, a switch module coupled between the first transmission interface and the second transmission interface, and a slave control unit coupled to the first transmission interface and the switch module, for turning on the switch module to couple the first transmission interface to the second transmission interface according to the control signal outputted from the master control unit.

Abstract: The invention provides a wireless transmission device, including a first circuit board, a second circuit board and a third circuit board. The first circuit board at least disposes more than one electronic elements. The second circuit board has an antenna, and the antenna is electrically connected to the first circuit board. The second circuit board is arranged at a predetermined angle to the first circuit board to enhance the receiving ability. The third circuit board is connected to the first circuit board and disposes a USB connector electrically connected to the first circuit board so that the change in form of the device can be easily made.

Abstract: The present invention is a power saving device disposed in a mouse and comprises at least one sensor in communication with both battery and a signal emitter. The sensor is located within the mouse housing and is disposed under a window. When the user holds the mouse and blocks the window, the sensor receives a correct signal and connects to the operating power supply of the signal emitter to make the mouse operate normally. When the user does not use the computer for a while and the mouse is in a suspending mode, the sensor receives an incorrect signal to disconnect from the operating power supply so the signal emitter of the mouse does not need to perform scanning continuously any more, thus decreasing power consumption.

Abstract: An optical pointing device includes a base which can be a casing of a peripheral device of a computer system having a display using a cursor or a portion of a display system using a cursor. The base defines a cavity having an opening in a surface of the base. An optical sensing system is received and retained in the cavity. The optical sensing system includes a lens located in front of the optical sensing system for directing optical signals toward/away from the optical sensing system. A light-transmitting panel is removably and selectively mounted to the opening of the cavity for covering the cavity. The distance between the panel and the lens is substantially equal to the focusing length of the lens whereby an object moving on the panel can be clearly detected by the optical sensing system and then converted into a corresponding first electrical signal to drive the cursor in a first direction.

Abstract: A variable resistance measuring loop having a compensational function for environmental factors is provided. The variable resistance measuring loop includes a central processing unit; a variable resistance VR connected between first and second terminals of the central processing unit, as well as a transistor Q and resistance R coupled to respective terminals of the central processing unit, and a capacitor C coupled with the transistor Q to a center contact of the variable resistance VR. During operation, the variable resistance measuring loop establishes at least one of two discharging loop modes wherein discharge of the capacitor C occurs through one of either a resistance portion RA or a resistance portion RB of the variable resistance VR.

Abstract: The present invention is a power saving device disposed in a mouse and comprises at least one sensor both contacts of which connect to a battery and a signal emitter respectively, and one window disposed on an upper surface of a mouse housing. The sensor is in the mouse housing disposed under the window and uses the battery as an operating power supply. When the user holds the mouse and blocks the window, the sensor receives a correct signal and connects the operating power supply of the signal emitter to make the mouse operate normally. When the user does not use the computer for a while and the mouse is in a suspending mode, the sensor receives an incorrect signal to disconnect the operating power supply so the signal emitter of the mouse does not need to perform scanning continuously any more. In the meantime, the battery with a very small amount of power supplies the sensor and, thus, the life of the battery is increased.

Abstract: A method for forming a keyboard switching circuit without generating phantom phenomenon is disclosed. The method includes the steps of (1) forming a matrix of nodes with input/output terminals of the keyboard circuit; (2) selecting nodes from the matrix to define a reference diagonal line which divides the matrix into upper and lower portions; (3) selectively selecting nodes of the matrix in the upper and/or lower portions to define diagonal lines parallel to the reference line, the diagonal lines being located at different distance from the reference lines and the nodes of the diagonal lines forming no rectangle with each other; and (4) setting switches in the selected nodes. Since no rectangle can be formed among the switches, no reverse current may be caused by simultaneous actuation of three switches of a rectangle and thus effectively eliminating phantom phenomenon.

Abstract: An optical pointing device includes a base which can be a casing of a peripheral device of a computer system having a display using a cursor or a portion of a display system using a cursor. The base defines a cavity having an opening in a surface of the base. An optical sensing system is received and retained in the cavity. The optical sensing system includes a lens located in front of the optical sensing system for directing optical signals toward/away from the optical sensing system. A light-transmitting panel is removably and selectively mounted to the opening of the cavity for covering the cavity. The distance between the panel and the lens is substantially equal to the focusing length of the lens whereby an object moving on the panel can be clearly detected by the optical sensing system and then converted into a corresponding first electrical signal to drive the cursor in a first direction.

Abstract: A variable resistance measuring loop having compensation function for environmental factor is disclosed. The measuring loop comprises a central processing unit CPU connected by one end of the variable resistance to the PO.1 leg thereof, and the other end being connected to the PO.2 leg thereof, the center end thereof being connected to a drain of a charging switch transistor Q, the base of the transistor Q being connected in series with a resistance R to the PO.3 leg of the CPU, the emitter of the transistor Q being connected to VDD power source end, the drain being conductive with the PO.

Abstract: The multiple-channel wireless input unit is applied to a computer system that involves the use of wireless peripherals. Each different input device is respectively controlled by a CPU to transmit signals from its transmitter at a different channel, while its receptor controls a CPU that in turn controls a scanning device to scan the input signals at different channels. The signals are then transmitted to the computer through a USP port. The receptor receives signals at different times by scanning operation to achieve the purpose of simultaneous reception of two packets of signals in a time-divided and labor-divided fashion, and upgrade the operational efficiency of the wireless input unit.

Abstract: This invention relates to an antenna base, comprising a printed circuit board. A base is designed in a region at an appropriate location on the printed circuit board. The base is printed with silver glue on the printed circuit board. This base serves as the antenna base, or this base along with the printed circuits on the printed circuit boards form the antenna base, so that the antenna can effectively transmit signals when the keyboard, mouse or other computer peripheral equipment is connected with the antenna.

Abstract: The invention relates to an optical mouse, comprising a base unit, a transmitter and a receptor installed in the base unit to obtain coordinates, a transparent or semi-transparent sensing board that is installed above the transmitter and the receptor, and an accommodating chamber to accommodate the sensing board. The sensing board is capable of movement, front and back, left and right, inside the accommodating chamber, so designed that the signals transmitted from the transmitter are reflected by the sensing board back to the receptor to measure its coordinates. Then, whenever there is any movement of the sensing board, the change of movement is calculated to indicate the movement of cursor, so that the optical mouse can be used to move the cursor.

Abstract: This invention relates to an antenna base, comprising a printed circuit board. A base is designed in a region at an appropriate location on the printed circuit board. The base is printed with silver glue on the printed circuit board. This base serves as the antenna base, or this base along with the printed circuits on the printed circuit boards form the antenna base, so that the antenna can effectively transmit signals when the keyboard, mouse or other computer peripheral equipment is connected with the antenna.