The present invention provides a device for signal transfer, which outputs a treatment signal relating to a vertical-horizontal composite sync signal of a monitor and an integrated signal of the vertical-horizontal composite sync signal. There is a plurality of logic circuits in the device of the present invention. The first logic circuit is provided for receiving the vertical-horizontal composite sync signal and the integrated signal, and outputs a high level signal when the voltage level of th...

A print head maintenance device is used in a printing device. The print head maintenance device cleans a print head of the printing device. The print head is movable on a horizontal track of the printing device. The print head has at least one linearly arranged nozzle array. When the print head moves across the maintenance device, the print head will connect with the maintenance device through the connecting device, making the connecting device capable of moving along the first track to slide th...

A pressure-compensation cartridge for ink jet 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...

A thermal printer using colorful rays and infrared rays for identifying colorant regions of an ink sheet is provided. The ink sheet includes a number of colorant region sets. Each colorant region set includes a yellow region, a magenta region, a cyan region and a black mark arranged at the beginning of the cyan region. The black mark is infrared ray non-transmittable. The thermal printer further includes an infrared ray source/an infrared ray sensor for sensing the black mark, and a blue ray sou...

A guiding mechanism, comprising: at least one guiding rod, at least one base and a fastening device. The guiding rod can provide a reading head of optical storage carrier player to move along the longitudinal axis of the guiding rod. The base that connects with one end of the guiding rod arranges with at least: an receiving slot arranged to one surface of the base has an appropriate depth to provide one end of the guiding rod to be placed in, an opening arranged at an appropriate position under ...

The present invention relates to a device and a method of temperature control for an optical storage and retrieving apparatus. When the internal temperature of the optical storage and retrieving apparatus reaches a predetermined temperature, the temperature control device is able to bid the optical storage and retrieving apparatus steadily retrieve data by lowering the rate of a carry device of the optical storage and retrieving apparatus, or by instructing a servo control device to lower the tr...

The invention provides a reliable write method of data on an optical record carrier without changing the conventional configuration of an information recording apparatus. The invention uses the errors occurred in reading ATIP codes and/or the reflected signal from the surface of the record carrier to decide if the storage unit on the record carrier is eligible to store data. The defective storage units are labeled as unrecordable.

A portable electronic device with power failure recovery, powered by a main power source, the device comprising a power detection module, a processor, a timing unit and a power management unit. The power detection module detects an output characteristic from the main power source and asserts an interrupt signal if the characteristic is below a threshold value. The processor asserts a turn-off signal and an enable signal in response to the interrupt signal. The timing unit asserts a notification ...

A backlight device that includes a transparent substrate, a plurality of protrusions, a first layer of transparent material, a second layer of transparent material and a light source. The protrusions are provided on the substrate. The first layer of transparent material is attached to the substrate. Also, the first layer of transparent material has an index of refraction smaller than the substrate. The second layer of transparent material is attached to the first layer of transparent material, w...

The feeding mechanism for feeding media from an initial site to a predetermined site comprises a base, a scrubber, a deskewer, two feeders, a lifting device having two cam portions, a driving element and a releasing device. The deskewer is moved between a first position and a second position and sets the media located at the initial site. The two feeders are used for transmitting the media located at the initial site toward the predetermined site. The cam portions are used as a lifter to move th...