Abstract:
In accordance with the present invention, a method for automatically identifying a scan area by a scanner is disclosed. The method comprises steps of scanning an original comprising an object, identifying the original to establish a location and a profile of the object in the original, displaying a preview window corresponding to the original, wherein a location and a profile of a confined area is exactly the location and the profile of the object, receiving a framed area selected from the preview window by user, wherein a portion of the framed area beyond the confined area is automatically removed to generate a scan area, and scanning the scan area. The present invention can also extend to a method for selecting a scan area by a user and a scanner with a feature of automatically identifying a scan area.
Abstract:
An image apparatus with batch scan and real time display and a method of the same are provided. The method of the present invention comprises steps of utilizing a transmission device for transmitting pictures into the scanner sequentially, scanning a picture and storing digital data in memory, displaying a notify signal to notice the user simultaneously while the scan is finished, showing the scanned image in a display device and scanning next picture at the same time while the user changes a switch control device. It is provided for shortening the scanning time of an image and reducing the time of waiting by utilizing the ways of batch scan and real time display. The present invention can increase number and size of picture to be scanned and thereby promote the scanning efficiency without requiring the increase in size of a memory buffer.
Abstract:
The present invention relates to a method for compressing an image data in real time. At first, the present invention divides an image, which is got after a pre-scanning process, into plural lines. Each line is divide into several blocks, whose sizes are the same. Each block comprises plural pixel values. A pixel value of a block is saved in the buffer completely to become the first datum. The pixel value is usually the minimum pixel value. Then plural differences, which are between the first datum and the plural pixel values of the block, are calculated. One of the plural differences, which are not equal to zero, is saved in the buffer completely to become the second datum. The difference, which is not equal to zero, is usually a minimum difference. Using the second datum to be a divisor and using the plural differences to be dividends will get plural specific values of plural differences to the second datum. When the first number, which is after a dot, of the specific value is greater than a fixed value or equal to the fixed value, it will be carried to the first number, which is in front of the dot and numbers, which are after the dot, are deleted. When the first number, which is after a dot, of the specific value is lower than a fixed value, numbers, which are after the dot, are deleted. This method will make the specific values become integers. At last, the plural specific values are saved in the buffer completely to become the plural third data and the compression procedure of the block is finished. Then the next block is compressed by the same procedure.
Abstract:
An apparatus and a method for controlling a stepping motor are provided. The apparatus comprises a control circuit and a driving device. The control circuit is used to receive a set of input signals in digital form and output an analog signal with a predetermined voltage level equivalent to the set of the input signals in digital form. The driving device with a power source receives the analog signal to serve as a reference voltage and provides a driving current to a stepping motor. The driving current is determined by the analog signal.
Abstract:
A charge coupled device (CCD) with multi-focus lengths is provided. The arrays of optical sensors with a plurality of transparent plates in parallel disposed thereon are disposed on a substrate. By way of either of changing the thicknesses of the transparent plates and changing the position levels of the arrays of the optical sensors, each of the arrays of the optical sensors obtains a different focal length. And thus, the depth of focus of the present charge coupled device is improved.
Abstract:
The present invention provides a mapping method and apparatus of look-up table in an imaging system. The mapping method implemented by the apparatus comprises receiving a digital signal having a high-bit portion and a low-bit portion. The high-bit portion of the digital signal is subjected to a curve table for look-up mapping to get a high-bit signal. The partial high-bit portion is subjected to a slope table for getting a factor. The low-bit portion of the digital signal is calculated with the factor to get a low-bit signal. The high-bit signal is combined with the low-bit signal to get an output signal. The curve table and slope curve can reduce the memory usage of the imaging system.
Abstract:
An imaging cartridge for a computer system, which is installed in a computer system to facilitate continuous document conveying process without any removable solid document cassette and additional document positioning process, comprises a cartridge housing for accommodating required imaging components; a roller-type document feeding unit, located at one side of the cartridge housing for carrying out continuous document conveying in and out operation of the imaging cartridge; a driving unit, located inside the cartridge housing for driving the document feeding unit; and a scanning unit, located inside the cartridge housing with a distance to the document feeding unit, for converting the imaging data into electrical signals.
Abstract:
An optical scanner with the scanning and transmission control circuit board removed out of the scanning casing and formed in an interface card connectable to an interface connector located on a computer motherboard. The interface card has an interface socket connectable with a cable which wires respectively to an optical scanning means and a transmission means of the scanner. Computer power supply provides power needed in the scanner through the cable. Scanning signals are transmitted through the cable between the scanning means and the interface card. The interface socket may be a high speed one (such as an IDE) without sharing with a printer on a low speed parallel port like a conventional scanner. Since the control circuit board is located outside the scanner, the scanner may be made thin and smaller size, thus saving packaging, warehousing and transportation costs. Without sharing a parallel port with a printer, the scanning and printing processes may be performed concurrently at high speed. Power supply is located in the computer metallic casing, electromagnetic interference is thus greatly reduced.
Abstract:
Method for controlling the rotating speed of an electromechanical device is disclosed herein, the aforementioned method including the following steps. The first step is to map a plurality sets of electrical-parameter means to different ranges of rotating speed of the electromechanical device to form a mapping table. The plurality sets of electrical-parameter means couples various resistance to the electromechanical device and eliminating the back EMF (Electro-Mechanical Force) in said electromechanical device. The second step is to connect a set of electrical-parameter means of said plurality sets of electrical-parameter means to a driving means. The driving means is used to provide the power that used in the operation of the electromechanical device, the set of electrical-parameter means is connected to the driving means according to the mapping table.
Abstract:
A lens movement mechanism for digital camera includes a lens set which has a composite lens and a Charged Couple Device built therein, a first movement member for turning the lens set angularly left or right, and a second movement member for turning the lens set angularly up or down. The first movement member includes a bracket piovtly holding the lens set and a gear set for turning the bracket and the lens set left or right angularly. The second movement member includes a slant block with a slope surface contact with a rear end of the lens set so that when the slant block is moved transversely, the lens set will be tilted up or down angularly. Therefore the lens set may be turned left or right, up or down smoothly and precisely without a user's hand moving the lens set directly. The lens may be prevented from hand smearing. Higher photo quality may be achieved.