2.
    发明专利
    未知

    公开(公告)号:DE19916119C2

    公开(公告)日:2001-07-26

    申请号:DE19916119

    申请日:1999-04-09

    Abstract: A mouse interface converter is provided, which allows a mouse to be connectable to a computer system, such as a personal computer (PC), installed with either an RS-232 serial port or a PS/2 port. This mouse interface converter allows the mouse to be connected directly to PS/2 port and via an adapter to RS-232 serial port. The mouse interface converter includes a mode-detection circuit for detecting which type of port the mouse is currently being connected. The mode-detection circuit can generate a mode-indicating signal indicative of the type of the currently connected port, which is then used to set a control circuit to convert the mouse data to the corresponding format. The mouse interface converter further includes a driving circuit that allows the mouse to be more compatible with various signals of either the PS/2 port or the RS-232 serial port. This feature allows the mouse to be considerably reduced in power consumption that allows the mouse to be suitable for use on notebook computers.

    Pointer device for scrolling control of computer screen

    公开(公告)号:DE19825285A1

    公开(公告)日:1999-12-09

    申请号:DE19825285

    申请日:1998-06-05

    Abstract: The pointer device (20) has a joystick (32) arranged vertically in an aperture (26) of a casing (24), having lower end (36) in contact with vertical sensor (28), and upper end rising through the aperture. The joystick is horizontally movable within a predetermined angle. Movement of the joystick triggers a horizontal sensor (30), downward movement triggers vertical sensor. The pointer device (20) includes a base-plate (22), a casing (24) arranged on the base-plate, a vertical sensor (28) arranged underneath an aperture (26) of the casing, and several horizontal sensors (30) arranged next to the vertical sensor. A joystick (32) is arranged vertically within the aperture of the casing, having a lower end (36) in contact with the vertical sensor, and an upper end rising through the aperture of the casing. The joystick is horizontally movable within a predetermined angle in reference to the lower end. A horizontal movement of the joystick triggers one of the horizontal sensors, while a downward movement triggers the vertical sensor. A control arrangement (60) is connected electrically with the vertical and horizontal sensors for detecting the vertical or horizontal movements, and for producing corresponding signals.

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