Patent application number | Description | Published |
20080211900 | SYSTEM AND METHOD FOR SCALING DATA TO COMPENSATE FOR SLANTED SCANNING ON A BIDIRECTIONAL SCANNING LASER PRINTER - A scanning system is adapted to scan an image beam across a photoconductive surface. The scanning system includes an oscillating mirror and is operable to generate an image beam and to reflect the image beam off the oscillating mirror to bidirectionally scan the image beam across the photoconductive surface and thereby discharge regions on the surface. The system is further operable to dynamically scale an intensity of the image beam as a function of a position of the image beam on the photoconductive surface. | 09-04-2008 |
20080235475 | METHOD AND APPARATUS FOR INTERVALED DMA TRANSFER ACCESS - A method for intervaled memory transfer access provides periodic authorization signals to a memory access controller. The method cycles between: 1) inhibiting the memory access controller from writing data to a memory until the memory access controller receives a periodic authorization signal to cause the memory access controller to remove the inhibition and write a predetermined amount of data to the memory through a data bus, and 2) releasing the data bus following writing of the predetermined amount of data to the memory by inhibiting the memory access controller from writing further data. | 09-25-2008 |
20080303918 | COLOR CORRECTING FOR AMBIENT LIGHT - An apparatus and method are described for adjusting the color balance of a display. According to the method, a sensor of the apparatus detects the color temperature of ambient light. A controller of the apparatus adjusts the color balance of the emissive display based on the detected color temperature of ambient light. | 12-11-2008 |
20090041369 | IMAGE ENHANCEMENT EMPLOYING PARTIAL TEMPLATE MATCHING - A method of image-resolution enhancement employing partial-template matching, including storing at least a portion of an image, and selecting from the image a window comprising a plurality of adjacent line segments having pixels, the window including a target pixel. The method also includes comparing the pixels of the window with a template for a partial match, and responsive to a partial match being found, substituting an enhancement pixel for the target pixel. By allowing a partial match for enhancement instead of requiring a 100-percent match of the prior art, the method provides image-resolution enhancement for digital-image data having noise or other errors. | 02-12-2009 |
20090122354 | IMAGE FORMING APPARATUS FOR IDENTIFYING UNDESIRABLE TONER PLACEMENT - A method and apparatus for printing data on a print medium is disclosed. The apparatus is configured to format print data to pixel data, the pixel data including pixel values; identify a grid of pixels having a predetermined pattern of pixel values; obtain predetermined pcode grid from memory for the identified grid of pixels; and send the predetermined pcode grid to controller circuit for printing. | 05-14-2009 |
20090207425 | RESOLUTION DOUBLING FOR PRINTER APPARATUS - A system includes a first memory portion storing image data and a second memory portion storing a lookup table having image resolution conversion data. Conversion logic is configured to access the image resolution conversion data and convert the image data, which has a first resolution, to print data, which has a second resolution. The second resolution has a lower pixel count than the first resolution. The second resolution has a higher bit per pixel ratio that the first resolution. | 08-20-2009 |
20100165370 | LASER PRINT APPARATUS WITH TONER EXPLOSION COMPENSATION - A printing apparatus comprises a processor comprising registers, and a memory configured to store image data. The processor is configured to load portions of the image data into the registers and perform toner explosion compensation on the portions of the image data loaded in the registers, excluding image data loaded in boundary positions in the registers. | 07-01-2010 |
20100225973 | LASER PRINT APPARATUS WITH DUAL HALFTONES - A printing system comprises a memory configured to store image data representing an image. The printing system comprises a processor configured to perform a first digital halftone process on a first portion of the image and a second digital halftone process on a second portion of the image. | 09-09-2010 |
20100290072 | PARALLEL VIDEO PROCESSING ARCHITECTURE - The video data is parallel processed allowing for extremely fast video processing or a greatly reduced clock requirement for the video processing circuit. In operation, each video channel reads from main memory. This allows each video channel to track the laser directly. The Parallel video processor receives non-columnar pixel data, such as rows. The videoprocessor may support printers of any width without significantly increasing the size of the system. | 11-18-2010 |
20110307634 | PROGRAMMABLE I/O INTERFACE - The invention provides an architecture and method for implementing a programmable I/O interface. The primary function provides a generic reconfigurable interface for serial communications between a laser printer controller and the print mechanism. The design also supports vertical page synchronization (top of page detection). | 12-15-2011 |
20120113477 | LASER PRINT APPARATUS WITH DUAL HALF TONES - A printing system comprises a memory configured to store image data representing an image. The printing system comprises a processor configured to perform a first digital halftone process on a first portion of the image and a second digital halftone process on a second portion of the image. | 05-10-2012 |
20120120178 | Laser Printer With Reduced Banding Artifacts - A laser scanning assembly generates a laser beam and scans the laser beam through a plurality of scan lines to form desired dots. Each scan line is positioned to overlap an adjacent scan line and each dot includes a plurality of segments. The scanning assembly scans the laser beam through multiple scan lines to fully discharge each segment of each dot. The laser scanner assembly would typically be part of a laser printer. | 05-17-2012 |
20130135629 | METHOD OF PRE-PROCESSING DATA ON A HOST MACHINE FOR A HOST-BASED PRINT SYSTEM - The software on the host machine examines a pixel, either alone or in relation to adjacent pixels. Based on the image data contained in the pixel or group of pixels, a multi-bit value is generated that can be used by the printing device to easily reproduce the necessary detail of the original pixel. The multi-bit value also contains print engine control parameters to handle items such as toner miser mode, toner explosion, edge roll off, etc. The multi-bit value can be generated algorithmically by using a lookup table or by some combination of these methods. | 05-30-2013 |
20130155167 | LASER OSCILLATING MIRROR SUPPORT FOR COLOR PRINTER - Systems, apparatuses, and methods for pre-rendering image data for a plurality of scanning paths are described here. The method includes receiving image data including a plurality of scan lines for a top portion of an image page, pre-rendering the data for a first scanning path to generate a first data set, pre-rendering the data for a second scanning path to generate a second data set, determining an initial scanning direction, and selecting the first data set or the second data set responsive to said determining. Other embodiments may be described and claimed. | 06-20-2013 |
20130182290 | LASER PRINT APPARATUS WITH DUAL HALFTONES - A printing system comprises a memory configured to store image data representing an image. The printing system comprises a processor configured to perform a first digital halftone process on a first portion of the image and a second digital halftone process on a second portion of the image. | 07-18-2013 |
20140198351 | METHOD AND SYSTEM FOR PERFORMING IMAGE PROCESSING ON A DOCUMENT BASED ON A DELAYED DETERMINATION OF WHETHER THE DOCUMENT IS MONOCHROME OR COLOR - Embodiments include systems and methods for performing image processing on a document based on a delayed determination of whether the document is monochrome or color. The image reproduction system includes image processing hardware configured to receive a plurality of pixels corresponding to a scan document, perform color processing on the plurality of pixels to produce color-processed scan data, perform monochrome processing on the plurality of pixels to produce monochrome-processed scan data, produce color distribution data for the plurality of pixels, and determine from the color distribution data that the scan document is one of a color document or a monochrome document. Based at least on determining that the scan document is one of a color document or a monochrome document, one of the color-processed scan data or the monochrome-processed scan data are discarded. | 07-17-2014 |
20150022849 | Method and Apparatus for Optimizing Memory Usage in an Imaging Device - A system including a communication interface, a memory, and a processor. The communication interface is configured to receive data. The memory is divided into a first retention region and a second retention region, wherein the first retention region is configured to store data for a first predetermined period of time, and the second retention region is configured to store data for a second predetermined period of time. The processor is configured to i) initially store, within the first retention region of the memory, the data that is received, and ii) in response to the data that is received having been stored in the first retention region of the memory for a time limit that exceeds the first predetermined period of time, transfer the data that is received from the first retention region of the memory to the second retention region of the memory. | 01-22-2015 |