Primax Electronics Ltd.

Other

Kung-Cho Sheng

Hsi-Yu Chen

Wen-Lung Hung

Chang-Yung Feng

Hung-Tse Lin

An automatic document feeder includes an input tray, a transfer path, a roller assembly, an ejecting tray, a light emitter, a light receiver, a comparator and a discriminating unit. The light emitter successively emits multiple light beams of different intensities to the document. When the multiple light beams penetrating through the document are received by the light receiver, the light receiver outputs corresponding voltage signals. The discriminating unit is electrically connected to the light receiver for discriminating document types according to the voltage levels of the voltage signals.

Automatic document feeder with mechanism to discriminate document types

An image scanner having wireless carriage module is provided to overcome the abrasion problem occurred between the flat flexible cable and the transparent scanning platform. The image scanner includes a casing; a carriage module disposed inside the casing for picking up image data of an object to be scanned and converting the image data into digital data; a wireless transmitter incorporated into the carriage module for receiving and modulating the digital data into wireless signals and transmitting the wireless signals out; and a wireless receiver separate from the carriage module and being in communication with a processing system for receiving and demodulating the wireless signals from the wireless transmitter into the digital data and outputting the digital data to the processing system for further processing.

Image scanner having wireless carriage module

An inverter for providing power to a lamp coupled to a power supply and a lamp circuit. The inverter can selectively provide the lamp circuit with AC voltages of two different frequencies. The inverter includes: a first switch for passing a DC voltage; a first and second oscillating circuit coupled to the first switch that receives DC voltage and respectively generates a first AC voltage having a first frequency and a second AC voltage having a second frequency; and a transformer coupled to the first oscillating circuit and the second oscillator for transforming the first AC voltage provided by the first oscillating circuit or the second AC voltage provided by the second oscillator into a third AC voltage and passing the third AC voltage to the lamp circuit. The first switch serves to selectively pass the DC voltage to the first oscillating circuit or the second oscillating circuit.

Inverter for providing power to lamp circuit

An anti-abrasive flat flexible cable for use with an image scanner for electrically connecting a carriage with a circuit board is disclosed. The flat flexible cable includes a metal foil having a first end electrically connected to the circuit board and a second end electrically connected to the carriage for signal transmission between the circuit board and carriage; a thermoplastic plastic wrapper enclosing the metal foil with two opposite ends of the metal foil exposed for electric connection with the circuit board and the carriage, respectively; and a spacer strip selected from a group consisting of Teflon, Nylon and polyoxylated methylene (POM), and attached onto the thermoplastic plastic wrapper for isolating the thermoplastic plastic wrapper from the glass scanning platform.

Growing community of inventors

Taipei, Taiwan

Kung-Cho Sheng