Abstract: A draining structure for keyboard an upper cover having a top surface forming a number of recessed areas for accommodation of movable pushbuttons. A lower cover is releasable attached to a bottom side of the upper cover. Each recessed area has at least one draining hole, preferably in the form of an elongated slot defined in a sidewall of the recessed area. The lower cover forms a groove corresponding in position to the draining holes of the upper cover for receiving liquid from the recessed areas of the upper cover via the draining holes. A number of openings or elongated slots is defined in the bottom of the groove for expelling the liquid out of the casing. A partition wall is formed in the lower cover for separating the groove from an electric part receiving space in which electric parts are arranged for preventing electric short caused by the liquid contacting the electric parts.

Abstract: A method of elimination of interference created on CDR/W run-out motors on sledge servers, especially for the elimination of interference created by the run-out of the combination of CDR/W spindle motor on track-seeing servers, where a general evaluating device is provided linking the controller output of the data access module driven by the sledge server motor and the final track signal output, including a speed evaluating device and a run-out evaluating device that may have access to the run-out factor of the CDR/W motor and the CD in the data access module for evaluation of the elimination function of the speed and the run-out tolerance, so that the run-out evaluating device could emit run-out compensation signals for amplification by a relay amplifier and the spindle motor synchronized signal before a negative feedback calculation by playing the final output signal of the module, with access to a play control signal for the elimination of run-out to the CDR/W sledge server, so that the CD may be read, wri

Abstract: A keyboard assembly includes a wireless USB (Universal Serial Bus) based keyboard having an upper face on which push buttons are movably mounted. A recess is defined in the upper face of the keyboard. A display is sized to be received in the recess. The display may be fixed in the recess. Alternately, the display is pivoted to the keyboard and movable between an erected position for user's observation and a stowed position where the display is received in the recess. The keyboard and the display are controlled by a common USB interface control circuit thereby enabling the keyboard to receive and display video signals without additional circuit.

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: A cursor controller is installed on a computer keyboard, for the purpose of controlling the direction and speed of movement of the cursor. The cursor controller is shaped somewhat like a post unit; at its bottom is an arched face. On this arched bottom are several protruded-post contact points, each protruded-post contact point corresponding to respective electrical contact point at matching positions on the surface of the circuit board inside the casing of the keyboard. Each protruded-post contact point is in the arrangement of two concentric circles on the arched bottom of the cursor controller. Four protruded-post contact points form a set, comprising eight cursor movement directions, i.e., up, upper right, right, lower right, down, lower left, left, and upper left.

Abstract: A keyboard pushbutton apparatus is provided. The apparatus includes a stationary base and a movable cap coupled in axially displaceable manner thereto. The base is formed with an upwardly, extending section within which are disposed at least a pair of wedge members. The cap is formed with a downwardly extending guide post that slidably engages the upwardly extending section of the base. The guide post includes at least a pair of opposed resiliently deflective panels, each formed with a pair of axially directed ribs protruding transversely therefrom. The ribs are laterally spaced to define therebetween a slot for slidably engaging one of the base wedge members. A lower portion of at least one of the ribs includes a transversely directed oblique face for engaging a first surface of the wedge member, and a laterally directed oblique face for engaging a second surfaces of the wedge member.

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: The present invention relates to lighting unit that comprises at least a trough, a plurality of slots on a light penetration member attached at the bottom of a base, and at least a LED disposed in the trough. Fasteners are attached to the end of the feet of each key to join the key to the slots on the light penetration member. Each key is capable to move up and down freely with respect to the base. The LED connects to a power supply, the LED lights. All relevant keys will have an appropriate luminosity.

Abstract: A pushbutton of a keyboard includes a cap supported on a base board by a linkage comprising first and second links pivoted together whereby the cap is movable from a released to a depressed positions when depressed. Each link has upper and lower pivots respectively connected to the cap and the base board. The links have two side bars connected between the upper and lower pivots thereof. Two spring arms extend from the base board having free ends forming L-shaped offset sections receivingly engaging L-shaped recesses defined in corresponding side bars for biasing the cap toward the released position. The spring arms deform when the cap is depressed. When the spring arms are deformed to an extent, the offset sections are abruptly driven toward and impact a contact surface of the recesses, generating a sound of impact and a pulse-like reaction caused by the impact. The deformation of the spring arms helps returning the cap back to the released position when the depression is released.

Abstract: A key switch apparatus is provided. The key switch apparatus includes a key base, a key cap, and a collapsible linking assembly extending between the key cap and the key base. The linking assembly is reconfigurable between extended and collapsed positions for displaceably supporting the key cap relative to the key base. The linking assembly includes pivotally coupled first and second linking members. The first linking member is provided with a flexible member that is resiliently biased to bulge transversely outward toward the key cap when the linking assembly is disposed in the extended position. The second linking member is formed with a press member that maintains contact with the flexible member, such that it transversely deflects the flexible member inward toward the key base responsive to the application of a pressing force upon the key cap.

Abstract: The present invention discloses a method for adjusting the difference of the reflective light disturbance for a light source of an optical disk drive when there is and is not an optical disk in the optical disk drive. This method is used to adjust the illumination parameters of the laser diode of an optical disk drive; wherein the no disc is used for rough tuning to obtain a preliminary value for the illumination parameter. After inserting an optical disk into the drive, a quick sample is taken again between the illumination power controller and the high level amplifier. After computing with the preliminary value of the illumination parameter, the influence value of the reflective light of the laser light source as it is to the illumination parameter when there is an optical disk in the drive.

Abstract: An automatic ROM burning device, comprising a support plate that is erected almost vertically. On the surface of the support plate is at least one feeder chute, inside which is inserted an IC rod, enabling the ROM component inside the IC rod waiting to be burned with data to lower in sequential order by gravity, while a moving mechanism moves it under the control of a control unit into a burner unit. The burner unit serves to conduct data burning and test operation on the components under the control of a control unit, and categorize the components according to the results obtained from the burning and testing operation. After data burning is completed, a moving mechanism delivers the components to a moving unit, moving the categorized components to separate discharge troughs; those of the same category are guided into empty IC rods for discharge.

Abstract: An optical disk drive protection device having a metallic housing to prevent any broken debris from damaging the panel of the disk drive, the housing having a top wall face and two lateral wall faces forming into a hollow rectangular body having a front opening, a fastening slot being formed on the top wall face and the two lateral wall surfaces, close to the position of the opening, for the fastening of the panel at the opening, the panel being provided with a tray recess to retractably hold the optical disk drive tray, the panel being provided with press key recess and indicator recess for use with the operation of the disk drive, the four side edges of the panel being provided with protruded elastic buttons to fasten the panel onto the housing, characterized in that a blocking face is extended from the top wall face and is formed into a 90 degree bend with the top wall face, the bottom edge of the blocking face is aligned with the tray recess such that when the panel is positioned at the opening position o

Abstract: A key switch having a replaceable key cap is provided. The key switch includes a main key body (10) having a pair of cross-ribs (14). The pair of cross-ribs (14) define a plurality of recesses within the main key body (10). A replaceable key cap (20) has an upper wall and a substantially annular sidewall which define a hollow chamber therein. A plurality of locking members (22) project from a lower surface of the upper wall within the hollow chamber. Each of the locking members (22) has a locking flange projecting therefrom and each of the plurality of locking members (22) is releasably received by a respective one of the plurality of recesses, with the locking flanges releasably engaging respective cross-ribs (14).

Abstract: This invention relates to a multimedia instrument simulation device and methods. The device is connected to a multimedia keyboard or computer and comprises several playing elements that simulate the playing of musical instruments. In conjunction with one signal acquisition element, the playing elements individually perform plucking, pressing, or striking actions, while retrieving the corresponding linearly varying analog signal. After conversion and processing in one signal pickup circuit, the signals are directly transmitted to a multimedia keyboard or sent to a PC for further simulation and processing via an interface circuit. After comparing the instrument playing digital data retrieved and converted by the aforementioned simulation device with the standard sound length, tone, and volume of the same instruments stored in a PC, the identical sound length, tone, and volume instrument playing sound effects data is outputted to playing equipment for playing.

Abstract: A key switch, comprising a base unit, a first linking member, a second linking member and a key cap, the first and the second linking members being interactively linked and driven by each other, on two sides of the first and the second linking members being respectively two joining pins, on the base unit and opposite the joining pins of the first and the second linking members being two pairs of connecting units, inside the key cap and opposite the joining pins of the fist and the second linking members being two pairs of connecting units, the connecting units of the base unit and the key cap respectively accommodating the joining pins of the fist and the second linking members, so that all joining pins can slide and move inside the connecting units, and the four joining points can move when the first and the second linking members are moving between the key cap and the base unit, to improve consistency of transmission when the push key is pressed.

Abstract: A computer keyboard assembly includes a keyboard and a wrist support which is releasably mounted to the keyboard by a retention device. The retention device includes a slide movably received in a slot defined in a front extension of the keyboard. The slide has an L-shaped top projection defining a channel. A guide plate is fixed to the front extension of the keyboard by a bolt and has an edge movably received in the channel for retaining the slide in the slot and guiding the movement of the slide. A pawl is formed on the slide to be movable therewith between a released position and a secured position. The slide is biased by a spring a toward the secured position where the pawl engages a U-shaped member formed on an underside of the wrist support thereby securing the wrist support to the keyboard.

Abstract: A keyboard includes a keyboard body similar to a traditional keyboard. The keyboard body has an edge from which an additional portion extends. The portion has a top face on which an EL panel or a thin plate having patterns and/or figures printed thereon is placed. A transparent cover is openably attached to the portion for covering the top face and thus housing the EL panel or the thin plate. The cover may be hinged to the portion whereby it is movable between a closed position and an open position. Alternatively, the cover is releasably attached to the portion whereby the cover can be removed for replacing a new EL panel or a new thin plate having different patterns printed thereon. The EL panel or the printed thin plate serves the purpose of decoration and enhances the appeal of the keyboard to the general consumers.

Abstract: A test device for horizontal position of an optical disc drive, comprising a test platform having a plurality of vertical position rods mounted thereon and the rods being of similar horizontal height; and at least a sensor mounted within the area formed by the position rods located on the platform, and including at least an emitting element and a receiving element, the emitting element emitting an optical detection signal (i.e., incident wave) to an optical disc connectedly driven by the motor rotating shaft of a pick-up mechanism to be tested, by means of a reflected optical signal produced by the optical disc, the receiving element receives the signal, and the sensor produces a horizontal height measuring data, and thereby the results and the measured horizontal height data determine whether the motor horizontal position of the optical disc drive pick-up device is parallel to the horizontal axial direction of the optical disc drive pick-up device.