Abstract: An image processing system of a scanner including an optical sensing unit, several analog signal processing units, a control processing unit, a memory unit and an image registration unit. The optical sensing unit captures an image of document, and several analog monochromatic image signals are generated and transmitted accordingly. The analog signal processing units correspondingly receives the analog monochromatic image signals and several digital monochromatic image signals are generated and transmitted accordingly. The control processing unit processes the digital monochromatic image signal and several processed monochromatic image data are generated and transmitted accordingly. The memory unit receives and stores the processed monochromatic image data. The image registration unit retrieves the processed monochromatic image data stored in the memory unit and a color image is produced accordingly.

Abstract: An ESD protection structure, comprising at least one conductive roller. The conductive roller comprises a conductive roller body, and a supporter supporting the conductive roller. The supporter is grounded.

Abstract: The scanning apparatus includes a movable chassis and a main board fixed on the body. A charge couple device module and a front end processing device are disposed on the chassis. An application specific integrated circuit is positioned on the main board. After the charge couple device module detects a light analog signal, the application specific integrated circuit communicates with the front end processing device through a command interface. Therefore, the light analog signal is converted into the light digital signal by the front end processing device, and then the light digital signal encoded into low voltage differential signaling form is transmitted to the application specific integrated circuit for proceeding the subsequent image processing.

Abstract: An image sensor module includes a body, an image sensor and a lens array. The image sensor is arranged within the body and includes a plurality of photosensitive units and a transparent layer for covering the photosensitive units. The transparent layer has an upper surface away from the photosensitive units. The lens array is arranged on the image sensor and in close contact with the upper surface of the transparent layer for receiving a plurality of image signals and focusing the image signals on the photosensitive units. The lens array has a depth of focus equal to a distance between the upper surface of the transparent layer and the photosensitive units.

Abstract: A method for detecting defects on a transparent film in a scanner is disclosed. The scanner has a light source for exposing the transparent film. The method includes using the light source to expose the transparent film for a first predetermined time to generate a first image, using the light source to expose the transparent film for a second predetermined time to generate a second image, and comparing differences between the first image and the second image according to a time ratio of the first predetermined time and the second predetermined time so as to detect the defects on the transparent film.

Abstract: An image scanning method used in a scanner. The scanner includes a housing, a transparent platform set on the housing for a document to be placed on, a scanning module installed inside the housing for scanning the document, and a step motor for driving the scanning module step by step so as to scan the document. After completing a first scanning pass, the scanning module moves a predetermined distance, which corresponds to non-integer steps of the step motor so that when the scanning module performs a second scanning pass, sampling positions of the second scanning pass are different from sampling positions of the first scanning pass.

Abstract: A device for detecting a placement position of a document includes at least two sensors mounted on a document feeding device. Each of the sensors is in parallel with the tangential direction of the leading edge of a document feeding roller, and may be moved by the document feeding device to adjust the placing document width.

Abstract: A video/audio module for a flat-panel display has a rectangular housing, a circuit board and speakers provided inside the housing, and a cover enclosing the housing. Two fasteners are arranged at opposite sides of the housing, and at least one tenon is formed on the cover. Both the fasteners and the tenon are used for providing a secure connection between the module and the flat-panel display. Further, the circuit board inside the housing is able to receive external video and audio signals and then play those signals respectively by the flat-panel display and the speakers.

Abstract: A video/audio module for a flat-panel display has a rectangular housing, a circuit board and speakers provided inside the housing, and a cover enclosing the housing. Two fasteners are arranged at opposite sides of the housing, and at least one tenon is formed on the cover. Both the fasteners and the tenon are used for providing a secure connection between the module and the flat-panel display. Further, the circuit board inside the housing is able to receive external video and audio signals and then play those signals respectively by the flat-panel display and the speakers.

Abstract: A method for detecting defects on a transparent film in a scanner is disclosed. The scanner has a light source for exposing the transparent film. The method includes using the light source to expose the transparent film for a first predetermined time to generate a first image, using the light source to expose the transparent film for a second predetermined time to generate a second image, and comparing differences between the first image and the second image according to a time ratio of the first predetermined time and the second predetermined time so as to detect the defects on the transparent film.

Abstract: An image scanning method used in a scanner. The scanner includes a housing, a transparent platform set on the housing for a document to be placed on, a scanning module installed inside the housing for scanning the document, and a step motor for driving the scanning module step by step so as to scan the document. After completing a first scanning pass, the scanning module moves a predetermined distance, which corresponds to non-integer steps of the step motor so that when the scanning module performs a second scanning pass, sampling positions of the second scanning pass are different from sampling positions of the first scanning pass.

Abstract: Disclosed is a serial fan which only occupies a small space, has a simplified assembling structure, and can effectively eliminate the interference between fans. The serial fan includes a main frame, a plurality of rotor vanes connected in series within the main frame along an axial direction of the serial fan, a first support disposed inside and connected with the main frame for supporting one of the plurality of rotor vanes, and a second support detachably connected with the first support for supporting another one of the plurality of rotor vanes.