47 results about "White band" patented technology

An inkjet image forming apparatus and a method of defective nozzle compensation in the inkjet image forming apparatus. The method includes detection of an occurrence and a position of the defective nozzle in a nozzle unit, when the defective nozzle is detected, analyzing image information on image data which are to be printed at a compensated position which is a position printed with the defective nozzle and image data which are to be printed at positions adjacent to the compensated position, and exchanging the image data which are to be printed at the compensated position for image data which are to be printed at one of the adjacent positions according to the analyzed image information and performing printing. Missing dots caused by the defective nozzle are compensated by exchanging image data and performing printing. Accordingly, since the image data are exchanged and printed, it is possible to prevent deterioration in image quality such as a white band which can be easily perceived by a user.

An inkjet image forming apparatus and a method of defective nozzle compensation in the inkjet image forming apparatus. The method includes detection of an occurrence and a position of the defective nozzle in a nozzle unit, when the defective nozzle is detected, analyzing image information on image data which are to be printed at a compensated position which is a position printed with the defective nozzle and image data which are to be printed at positions adjacent to the compensated position, and exchanging the image data which are to be printed at the compensated position for image data which are to be printed at one of the adjacent positions according to the analyzed image information and performing printing. Missing dots caused by the defective nozzle are compensated by exchanging image data and performing printing. Accordingly, since the image data are exchanged and printed, it is possible to prevent deterioration in image quality such as a white band which can be easily perceivedby a user.

A pattern matching apparatus comprising: means for storing photographed image data of a semiconductor device; means for storing CAD data of said semiconductor device; an information input means for inputting information on the white band width contained in said image data; a pattern extracting means for extracting a pattern on the semiconductor device from said image data by using the white band width information; and a matching means for matching said pattern with the CAD data.

A method and apparatus are provided for compensating for the degradation of a print image due to a malfunctioning nozzle that irregularly ejects ink. A malfunctioning nozzle is detected among nozzles installed in an inkjet image forming apparatus, and image data of a print position adjacent to a compensation position printed by the malfunctioning nozzle is exchanged for image data of a print position in an interest or inspection region near the compensation position. Accordingly, degradation of print quality, such as, for example, an unintended visible white band, can be prevented and the lifetime of the printhead can be lengthened.

The present invention provides an electron beam measurement technique for measuring the shapes or sizes of portions of patterns on a sample, or detecting a defect or the like. An electron beam measurement apparatus has a unit for irradiating the patterns delineated on a substrate by a multi-exposure method, and classifying the patterns in an acquired image into multiple groups according to an exposure history record. The exposure history record is obtained based on brightness of the patterns and a difference between white bands of the patterns.

A method of designing a roller bearing is disclosed upon clarifying mechanisms of damage patterns in respect of two kinds of brinelling, involved in the bearing, wherein white-banded flaking (brittle flaking) is a plastic instability phenomenon appearing under high-speed deformation accompanied by adiabatic shear deformation status with the resultant occurrence of adiabatic shear band (also called white band) inside material of the bearing. This enables all of the damage patterns to be determined upon making comparison between shear strain and shear strain rate, occurring inside the bearing, and discriminated values.

Provided are a method and apparatus for compensating for the degradation of a print image due to a malfunctioning nozzle that irregularly ejects ink. The method includes detecting a malfunctioning nozzle among nozzles installed in an inkjet image forming apparatus and increasing a dithering threshold of an adjacent position to a compensation position printed by the detected malfunctioning nozzle. The method adjusts a dithering threshold of a print position of the malfunctioning nozzle or a dithering threshold of an adjacent print position, and thus performs a halftoning transaction and prints an image. Accordingly, the degradation of print quality such as a visible white band can be prevented and the lifetime of the printhead can be lengthened.

Printing methods and systems that provide both a secure value label printing mode of operation and a non-secure mode of operation that allows generic printing of non-value items without compromising the security feature of the secure printing mode are described. If the printing system determines the image is a non-secure image such as an address label or other non-value graphic, the printing system utilizes the non-secure mode and disables the use certain printhead elements. In such a system, the enforced print disabled white bands are enforced in non-secure mode such as by actually disabling the print drive mechanism that allows a row to be printed or by populating certain regions of the print buffer with zero values.

A method and apparatus are provided for compensating for the degradation of a print image due to a malfunctioning nozzle that irregularly ejects ink. A malfunctioning nozzle is detected among nozzles installed in an inkjet image forming apparatus, and image data of a print position adjacent to a compensation position printed by the malfunctioning nozzle is exchanged for image data of a print position in an interest or inspection region near the compensation position. Accordingly, degradation of print quality, such as, for example, an unintended visible white band, can be prevented and the lifetime of the printhead can be lengthened.

An inkjet image forming apparatus and a method of defective nozzle compensation in the inkjet image forming apparatus. The method includes detection of an occurrence and a position of the defective nozzle in a nozzle unit, when the defective nozzle is detected, analyzing image information on image data which are to be printed at a compensated position which is a position printed with the defective nozzle and image data which are to be printed at positions adjacent to the compensated position, and exchanging the image data which are to be printed at the compensated position for image data which are to be printed at one of the adjacent positions according to the analyzed image information and performing printing. Missing dots caused by the defective nozzle are compensated by exchanging image data and performing printing. Accordingly, since the image data are exchanged and printed, it is possible to prevent deterioration in image quality such as a white band which can be easily perceived by a user.

An image capturing unit outputs both a valid video signal (a primary video signal) and an unnecessary video signal (a secondary video signal) as an output signal; a flash detection unit detects white band interference caused by an external flash; and a flash correction unit delays the valid video signal using a first delay unit and delays the unnecessary video signal using a second delay unit. When white band interference has occurred, the outputs of the respective delay units are added together by an adding unit, generating a corrected signal. An output selection unit selects and outputs the signal from the first delay unit in normal times, and when interference caused by an external flash has occurred, selects and outputs the corrected signal.

The present invention provides a method and apparatus for reducing artifacts in Computed Tomography (CT) image reconstruction. The method comprises acquiring an original reconstructed image, then conducting total variation processing for the original reconstructed image generating a total variation reconstructed image, conducting an initial metal artifact reduction processing for the original reconstructed image generating an initial metal artifact reduction reconstructed image, generating a weighted image based on the total variation reconstructed image and the initial metal artifact reduction reconstructed image, wherein the weighted image reflects that the original reconstructed image contains white-band artifactsd combining a portion of the original reconstructed image and a portion of the initial metal artifact reduction reconstructed image through the weighted image to generate a final image, wherein the final image does not contain white-band artifact.

The disclosure discloses a sensing aiding method for cognitive radio. The method includes the following steps. a high level node transmits configuration information to a base station; the base station combines with a subordinate node of the base station to perform frequency spectrum sensing measurement, in which the subordinate node has sensing capability, and feeds back a result of the sensing measurement to the high level node; and the high level node formulates a corresponding WS allocation policy according to the received result of the sensing measurement. The disclosure also discloses a system. By the method and the system of the disclosure, the high level node transmits the configuration information to the base station; the base station performs the spectrum sensing measurement in combination with the subordinate node having the sensing capability of the base station in a designated frequency band and feeds the result of the sensing measurement back to the high level node; and the high level node formulates the corresponding WS allocation policy according to the result of the sensing measurement. Available white band resources are acquired; the probability of base station configuration failure is reduced, and the overhead caused by configuration failures is reduced.