Abstract: A projection system includes a total reflection element, an image reader, an analysis system and a server device. The image reader reads a projective image guided by the optical projection device and the total reflection element and outputs a read signal. The analysis system analyzes the read image by an evaluation function and determines the clearest image on the projective plane so as to output an adjustment signal. The server device automatically performs the focal adjustment to the optical projection device based on the adjustment signal.

Abstract: The present invention relates to an image scanning apparatus and more particularly to a dual transmissive/reflective image scanning apparatus with protective apparatus. The present invention includes a housing, an original cover, a tray of a first type, and a tray of a second type. The housing provides a slot, within which the tray of the first type or the tray of the second type may be selectively inserted. The tray of the first type is inserted within the slot for reflective scanning, while on the other hand, the tray of the second type is selectively inserted within the slot for transmissive scanning. In addition, a first device is provided within the housing, and the tray of the first type has a second device for selectively coupling with the first device. The original cover has a third device for selectively coupling with the first device.

Abstract: An ink ribbon positioning system of a color printer for identifying various positions of a color ink ribbon of the color printer. The ink ribbon includes a plurality of sequentially arranged color frames for storing different color dyes. The color printer includes a thermal print head for printing the color dyes onto an object and a driving device for scrolling the ink ribbon relative to the thermal print head. The ink ribbon positioning system includes first and second light sources for emitting light beams through the ink ribbon, an optical sensor for detecting the light beams penetrating through the ink ribbon, and an identification device electrically connected to the first and the second light sources. When the driving device scrolls the ink ribbon relative to the thermal print head, the identification device will control the first and the second light sources and identify the position of each of the color frames of the ink ribbon according to an output voltage generated by the optical sensor.

Abstract: A printing apparatus has an ink jet print head that performs printing passes on a jetting position of the printing area. The ink jet print head has nozzles, each nozzle prints ink spots on a jetting position of the printing area. The ink jet print head performs printing according to a predetermined printing method. The predetermined printing method distributes all ink spots to be printed on the jetting position of the printing area to the printing passes to make the number of ink spots printed on the jetting position in each print pass approximately equal.

Abstract: A pallet for supporting media such as papers is disposed on a parallel motion mechanism. As the media is loaded, the pallet is shifted from an initial site toward a predetermined site in parallel, and therefore the media supported by the pallet is sequentially scrubbed and transmitted to a printing device by a scrubbing device.

Abstract: The present invention provides a display device for displaying video frame signals transmitted from a computer. When the display device receives the video frame signals, it detects the number of horizontal scanning lines first, and then compares the number with a sampling reference table to obtain a target sampling number. If the number of pixel clocks generated by a phase locked loop does not match the target sampling number, the display device will adjust the frequency of the phase locked loop until the number of pixel clocks matches the target sampling number so that the display device can display video pictures correctly.

Abstract: A pressure-compensation cartridge for inkjet printers, which is able to adjust the backpressure inside the cartridge within a proper range to prevent ink leakage from the print head or failure caused by ink dropping problems. The cartridge is a sealed container with an air duct on the top and a print head on the bottom. The pressure-compensation device, located inside the cartridge, includes an ink bag, a tension spring, and a motion element. The ink bag accommodates a substantial amount of ink for the print function of the print head and is made of a soft material. The tension spring has a first end engaged with the upper end of the ink bag and a second end engaged with the motion element. The resilience of the tension spring restrains the contraction of the ink bag caused by the running off of the ink so as to maintain a stable backpressure inside the ink bag, which prevents ink leakage or ink dropping problems through the print head of the cartridge.

Abstract: A paper accommodating assembly for an office machine is provided in the invention. The paper accommodating assembly includes a first paper accommodating device for accommodating paper sheets to be processed by the office machine and a second paper accommodating device for accommodating paper sheets being processed by the office machine. In particular, feeding path of the paper sheets accommodated by the second paper accommodating device is established or blocked in response to the movement of the first paper accommodating device. The paper accommodating assembly of the invention can reduce space occupied by the office machine and avoid paper jam due to the closing of the first paper accommodating device.

Abstract: The present invention provides a dual transmissive/reflective image scanning apparatus for improving the scanning quality of reflective originals. The present invention includes a slot for selectively accommodating a tray of a first type or a tray of a second type. For reflective scanning, the tray of the first type, which includes a means of transparent material such as glass, is inserted within the slot. For transmissive scanning, the tray of the second type without a means of transparent material may be selectively inserted within the slot. As scanning transparent originals, a light source from the original cover passes directly thought the transparent originals and thus it reduces obstruction that may be caused by a transparent material. Furthermore, either the tray of the first type or the tray of the second type is allowed to be withdrawn from the housing for cleaning greasy dirt or dust deposited on the glass or installing various holders for transparent originals.

Abstract: A removable silicon cap mounted on the top of a cursor control device is provided. The silicon cap has an outer surface, which is covered with an adhesive layer, and an inner surface. A plurality of fibers are attached to the adhesive layer. The silicon cap characterizes in that each fiber has a column portion and a base portion. The base portion is embedded in the adhesive layer to enhance the detachment-resistant capability of the fiber during use of the cursor control device.

Abstract: A covering structure, comprising a case and supporting element pivotally connected to the case. The supporting element may be oriented between two positions. The supporting element also incorporates a supporting socket, provided as a carrying holder when oriented in the first position. Additionally, the supporting socket integrates the ability to contain objects when oriented in the second position.

Abstract: A printer has a print path, a code strip disposed in parallel along the print path, a sensor for sensing the code strip, a driving system for moving the sensor along the code strip, a timer, a memory and a position signal generator. The code strip has embedded position information, which the sensor reads. The sensor generates a first or a second code signal depending upon the position of the sensor on the code strip. The timer generates clock signals at a rate that corresponds to an expected rate of change of the first and second signals from the sensor when the driving system moves the sensor along the code strip. The memory is used to hold the locations of defective areas on the code strip. The position signal generator uses the sensor to generate a position signal when the sensor is not reading within any of the defective areas on the code strip, and uses the clock signals from the timer to generate the position signal when the sensor is moving within any of the defective areas on the code strip.

Abstract: The invention provides an automatic charging device via a USB and method of operating the same. The charging device comprises: a battery charger; an indicator; an USB interface; and a charging controller.

Abstract: The invention provides a digital camera with a disposition device for automatically converting a picture to an appropriate image meeting the vision via the viewfinder, wherein the disposition device for auto-detecting the holding condition of a digital camera comprises: an insulating envelope having a cavity which is formed by an insulating bottom and side wall, wherein the cavity is divided into a plurality of concave regions; a conductive plate covering the cavity of the insulating envelope and connected to the power source; a plurality of conductive pads selectively located on the insulating bottom; and a conductive ball rolling in the cavity by the influence of gravity, wherein the movable sensor touching one of the conductive pads and the conductive plate represents the holding condition of the digital camera.

Abstract: A wall mount unit is provided. Such a wall mount unit comprises three supports. At least one guide slot is formed on one of the supports. Another support comprises a link that moves in the guide slot. An angle between two supports is adjusted by moving the link.

Abstract: A media feeding system has a pick arm with a pick roller, a media tray, a media restrainer, a motor and a drive train. The pick arm is rotatably installed above the media tray so that it can lift the pick roller away from the media tray, and lower it onto the media tray. The media restrainer can be in an up or a down position. When in the up position, it prevents media from moving out of the media tray. When in the down position, media can move out of the media tray past the media restrainer. The drive train delivers torque from the motor to the pick arm, pick roller and media restrainer. The motor can operate in two directions. When operating in the first direction, the media restrainer moves into the down position, the pick roller lowers onto stacked media and pushes a sheet out of the media tray past the media restrainer. When the motor operates in the second direction, the media restrainer moves into the up position, and the pick arm lifts the pick roller away from the stacked media.

Abstract: The present invention provides a power supply apparatus for outputting an output voltage according to a first signal from outside, the power supply apparatuses comprises a rectifier, a power transformer, a power control circuit, and a switching device. The rectifier is provided for supplying a DC voltage source. The power transformer receives the DC voltage source, then outputs the output voltage and a second signal. The power control circuit is provided for controlling the output voltage of the power transformer according to the second signal, then the switching device outputs the second signal to the power control circuit according to the first signal.

Abstract: An automatic paper feeding system has a paper-grabbing device and paper-separating device, with a paper tray having a front end that can move up and down. A paper-feeding channel is in front of the front end of the paper tray. The paper-grabbing device is installed on the paper tray and moves paper in the paper tray into the paper-feeding channel. The paper-separating device has a paper-separating roller and a paper-separating friction disk which are respectively installed above and below the paper-feeding channel. These elements together permit only a single sheet of paper to move forward. An actuator mechanism installed under the paper-feeding channel lifts up or pulls down the front end of the paper tray and the paper-separating friction disk. Finally, a driving device drives the paper-grabbing device, the paper-separating device and the actuator mechanism.

Abstract: A print head moves forward and backward along a print track to perform a printing operation, and has at least one nozzle. A station assembly includes a carrier for holding the print head, the carrier moving the print head forward and backward along the print track, and a service station for servicing the print head. The service station is located at one end of the print track and has a housing, and a wiper assembly mounted in the housing for engaging with the carrier to wipe the nozzle. The wiper assembly has a wiper to wipe the nozzle and a carrier contact for mechanically engaging and contacting with the carrier. The carrier contact slides against the carrier along a wiping direction to provide the mechanical motion of the wiper to wipe the nozzles.

Abstract: The invention relates to a software method for reducing the electromagnetic irradiation of the Phase Lock Loop (PLL) within an On-Screen Display Menu system. The method includes the steps as follows: setting the resolution of an OSD system to a predetermined pass value of Electromagnetic Interference (EMI); checking the OSD system; changing the resolution of the OSD system to a value to be displayed if the OSD system is started; keeping on the predetermined value of EMI if the OSD system is not started; repeating the checking of the OSD system step.