Abstract: A USB interface detection device is provided. The USB interface detection device includes a USB cable and a detection unit. A first electrical plug and a second electrical plug of the USB cable are plugged into a first electrical receptacle of a first electrical device and a second electrical receptacle of a second electrical device, respectively. A USB3.0 GND_DRAIN pin of the first electrical plug is connected with an ID pin of the second electrical plug. A first VBUS pin of the first electrical plug is connected with a second VBUS pin of the second electrical plug. The detection unit is disposed within the second electrical device for detecting a voltage difference between the said second VBUS pin and the ID pin, thereby judging an interface specification of the first electrical receptacle.

Abstract: The present invention relates to an image data luminance compensating method and a sheet-feeding scanning apparatus using such an image data luminance compensating method. According to the reference luminance value change of the reference background strip before and after the current document passes through the scan operating region, the luminance gain associated with compensation of the image data of the next document is determined.

Abstract: 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.

Abstract: The present invention relates to a compensation method for compensating digital image data generated from a scanning module of a scanner when the luminance of a lamp tube is unstable. Several compensating gains are computed according to the luminance values of a reference white plate so as to compensate the digital image data. The method of the present invention is implemented by software in a computer.

Abstract: The present invention relates to an image data luminance compensating method and a sheet-feeding scanning apparatus using such an image data luminance compensating method. According to the reference luminance value change of the reference background strip before and after the current document passes through the scan operating region, the luminance gain associated with compensation of the image data of the next document is determined.

Abstract: An image sensor includes a row of first color sensors including a plurality of first color sensors for sensing first color light to generate a plurality of first sub-pixels and a row of second color sensors including a plurality of second color sensors for sensing second color light to generate a plurality of second sub-pixels. The distance between a first end of an effective sensing area of each first color sensor and a first end of an effective sensing area of a corresponding second color sensor in the linear direction of the image sensor is a first length greater than zero.

Abstract: 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.

Abstract: A contact image sensor includes a first optical sensing element and at least one additional optical sensing element. The first optical sensing element includes plural optical sensing units arranged in a line along a first direction. Plural first image units are successively generated when the first optical sensing element senses a first source light. The at least one additional optical sensing element is disposed at a lateral side of the first optical sensing element, and includes plural optical sensing units arranged in a line along the first direction. When the additional optical sensing element senses an additional source light, plural additional image units are successively generated. The adjacent optical sensing units of the first optical sensing element and the at least one additional optical sensing element are partially overlapped with each other along a second direction, which is perpendicular to the first direction.

Abstract: The present invention relates to a compensation method for compensating digital image data generated from a scanning module of a scanner when the luminance of a lamp tube is unstable. Several compensating gains are computed according to the luminance values of a reference white plate so as to compensate the digital image data. The method of the present invention is implemented by software in a computer.

Abstract: An image sensor includes a row of first color sensors including a plurality of first color sensors for sensing first color light to generate a plurality of first sub-pixels and a row of second color sensors including a plurality of second color sensors for sensing second color light to generate a plurality of second sub-pixels. The distance between a first end of an effective sensing area of each first color sensor and a first end of an effective sensing area of a corresponding second color sensor in the linear direction of the image sensor is a first length greater than zero.

Abstract: A step motor includes a rotor and two stators. The two stators are installed around the rotor, having magnetic poles in different numbers to generate different step angles.

Abstract: A complex image processing device, with a serial bus switching ability, is electrically connected to a computer by a serial bus. The device has a housing, an image capturing unit installed inside the housing for generating digital image data from a picture, a memory card reading unit installed inside the housing for reading digital data stored in a memory card, and an electromagnetic mechanical switch installed between the serialbus and the device. The electromagnetic mechanical switch, controlled by a software driver, can switch between the image capturing unit and the memory card.