Abstract: A locking device is proposed for scanner having an optical module. The optical module has a base and an image scanning means arranged on one side of the base. A locking hole and a mounting portion for the locking device are provided at predetermined locations on the image scanning means and the base, respectively. The mounting portion is a through hole piercing the base. The locking device is arranged within the mounting portion and the upper portion of the locking device is engaged within the locking hole. By using a locking device wherein the upper end thereof detaches from the locking on the scanner when the lower end thereof is pivotally rotated by the pushing force from table, the scanning means of the scanner can move laterally. The image scanning means is not shifted during portage.

Abstract: An image acquiring apparatus for automatically selecting from 1D image signal and a 2D image signal is disclosed. The apparatus includes an image signal acquisition device selectably acquiring therethtrough the 1D image signal and the 2D image signal, an image acquisition control controlling the image signal acquisition device to selectably acquire one of the 1D image signal and the 2D image signal, a memory for storage, a pixel processing unit for processing one of the 1D image signal and the 2D image signal, an input/output interface, and a selecting mechanism for passing one of the 1D image signal and the 2D image signal through the pixel processing unit.

Abstract: A keycap assembly for using in a keyboard is provided. The keycap assembly includes a keycap having a lever fitting slot disposed in an inner wall thereof, and a lever having a curved portion in contact with the inner wall of the keycap for forming a downward slanting angle with respect to the inner wall of the keycap when the lever is assembled with the lever fitting slot of the keycap, thereby causing the keycap assembly to be assembled with the keyboard easily.

Abstract: An optical calibration plate and the assembling method for the same are disclosed. The optical calibration plate is assembled on a cover of an optical apparatus, the cover has a clamping means and the optical calibration plate is locked on the clamping means. The assembling method comprises following steps: (1) clamping one side of the optical calibration plate on a clamping means of a cover of an optical apparatus; and (2) clamping another side of the optical calibration plate on another clamping means of the cover. The optical calibration plate has less contamination because the operator will not touch the optical calibration and the processing time and cost are reduced.

Abstract: A support linkage movably connecting a key cap to a plastic body comprises a first rack and a second rack. The first rack has a first rack body movably connected between the key cap and the plastic body, and the second rack has a second rack body movably connected between the key cap and the plastic body. The second rack body has two axial holes each having an open side and engaged with a shaft on the first rack body.

Abstract: A printed circuit board assembly comprises a circuit membrane, a printed circuit board, a cover plate and two screws. The cover plate has an arch-shaped bump formed thereon such that the ribbon cable has firm contact with the printed circuit board. Therefore, the electric contacts of the printed circuit board are in firm contact with the electric contacts of the circuit membrane. The cost and assembling time is saved.

Abstract: A keyboard with interchangeable connection specification, comprises an input/output circuit board for DIN, PS/2 or USB connection specification and replaceably assembled within a main body of the keyboard. The input/output circuit board has signal transmitting end connected to the signal receiving end of a membrane circuit of the keyboard. The keyboard further comprises an openable cover on a panel of the main body of said keyboard and corresponding to the location of the input/output circuit board. The openable cover is opened to replace the input/output circuit board mounted within the keyboard for required connection specification.

Abstract: A scanning apparatus having two transmission systems. The motor through a transmission gear-wheel with high gear-change rate and a transmission gear-wheel with a low gear-change rate transmits the motion of the carriage. One-way clutches are also used to select the transmission system and to control the direction of the carriage. Thus, the scanner has high image quality and short carriage backward time.

Abstract: A computer keyswitch comprises clamping plate extended upward from the bottom plate thereof. The clamping plate is used to retain the upward motion of the pivotal shafts on bottom end of the two levers of the computer keyswitch. The position, orientation and height of the clamping plate have not limit such that the clamping plate has reduced thickness and height. Therefore, the computer keyswitch has lower height but with same level mechanism height and structural strength.

Abstract: A cable fastening device is provided having a sector-shaped housing including detachable lower and upper housings having a hollow arcuate raised member at a corner with a longitudinal central hole formed in the arcuate raised member, an internal arcuate grooved rail adjacent to the hole, first teeth adjacent to the grooved rail, an internal circuit board; and a hollow positioning means having a top side, two sides, and a bottom side including a pair of first posts raised from predetermined positions of the top and bottom sides respectively. A pair of arcuate recesses are provided on the top and bottom sides respectively, each having second teeth, and a transverse cable passing hole formed therein. The first posts are inserted into the central holes. The arcuate recesses are slidably engaged against the grooved rail, and the second teeth are engaged with the first teeth so as to tooth-by-tooth laterally move a cable along the arcuate recesses in order to adjust cable direction.

Abstract: A buckling device of a scanning head is installed at an initial position of an optic module of the scanner. A slot is formed on the casing of a scanner for being positioned and inserted by a swingable piece. Two lateral surfaces of the swingable piece are pivotally installed to a pair of shaft grooves on the casing by respective projecting shafts. The swingable piece has an upper stopper for being inserted into an engaging hole of the optic module. The swingable piece is installed with a lower stopper and a sliding groove is installed on the casing. A gate is installed in the sliding groove. A hooking piece protrudes from one end of the sliding groove for hooking one end of the spring at one side of the gate; another end of the spring is connected to a hook portion at an end surface of the sliding rod passing through another end of the gate. A transverse piece and a straight piece are installed on the sliding rod. The straight piece is buckled to a resisting surface at a bottom of the optic module.

Abstract: A dustproof and droplet-proof keyswitch is provided. The keyswitch includes a base plate with at least one stage formed thereon, each stage having a step portion formed at a top part; an elastic member arranged on the step portion; a key cap mounted on the elastic member and having a plunger inserting into the stage. The plunger has an elastic plate clamped between a pair of grooves and having a hook on a lower end thereof; the hook having a beveled lower end latched with the stage when the key cap is released. The stage has at least one projecting rib on an inner side thereof corresponding to at least one notch on the plunger to provide a clamping effect. Therefore, the keyswitch can be used under severe conditions such as in a dusty environment or when the keyboard has spilled on it a liquid such as tea or coffee.

Abstract: A battery stage module comprises a battery stage with a battery chamber and two conductive members. A plurality of screws are locked to the jumper contacts of a circuit board and clamps the battery stage module to the circuit board. Each conductive member comprises at least one first spring and a second spring wherein the first spring is in contact with poles of battery and the second spring is located on bottom of the battery stage and is penetrated by the screw. The second spring is forced to touch the jumper contacts of the circuit board when the battery stage module is fixed on the circuit board by screws.

Abstract: A liquid state non-solvent silicone resin obtained from a polycondensation reaction of material (A) dimethyl poly siloxane, material (B) vinyl methyl cyclo siloxane and material (C) diphenyl dihydroxy silane, the reaction being performed at a temperature within about 140˜180° C. under the presence of an anionic polymerization catalyzer.

Abstract: An improved keyswitch includes a stage having a mounting hole and a keycap having a plunger on a bottom thereof. The plunger is movably arranged within the mounting hole. The keyswitch is characterized in that one of the keycap and the stage is provided with at least one guiding rib, while the other of the keycap and the stage is provided with at least one dent corresponding to the guiding rib. The guiding rib is fit within the dent and the dent and guiding rib have multiple point contacts to restrict movement of the keycap with respect to the stage.

Abstract: A key structure comprises base plate, elastic member, frame and cap wherein the conductive membrane thereof is single-film structure, the contact of the conductive membrane corresponding to each key is of meshed-hook shape (), a venting aperture is provided at the center of the contact. A transparent and insulating layer is arranged upon the conductive membrane to prevent the short circuit of the circuit in the conductive membrane. An opening is provided at the transparent and insulating layer and corresponding to the conductive membrane. Both ends of the elastic member are attached to the cap and the transparent and insulating layer by adhesive. A conductive bump with a conductive layer is provided on the elastic member such that the conductive bump of the elastic member is connected to the contact of the conductive membrane and a closed loop is formed within the key when the cap is pressed down, whereby the signal generated by key stroking action is transmitted to the computer.

Abstract: A method and apparatus for compressing a color image by reducing the amount of color information initially acquired. The color information can later be restored by interpolation from other portions of the image where the color information is available. This not only reduces the amount of data that needs to be stored, but improves the scanning time for an image scanner by reducing the amount of time needed to scan the image. In a preferred embodiment, both the scanning time and the amount of data can be cut in half.

Abstract: Disclosed is a system for saving electrical power (II) comprising an external device, a control unit and a sensing device which is a directive switch and can sense the variation of angle. One end of the sensing device is connected to ground, another end of the sensing device is connected to the input of the control unit. The microcontroller will be switched to a power down mode from normal operation if the external device is not being accessed for a specific duration. Therefore, the PSEN pin of the microcontroller will be switched from a logical high state to a logical low state. At this time, the microcontroller will be triggered to recover the normal operation of external device if the sensing device senses angle change, thus reducing electrical power and prolonging the battery life.