摘要:
An image processing apparatus rendering a plurality of objects includes a CPU cache used for rendering, a determination unit configured to determine whether a cache miss of the CPU cache occurs in rendering of the plurality of objects, and a rendering unit configured to, in a case where the determination unit determines that the cache miss occurs, execute division rendering processing for generating a bitmap corresponding to the plurality of objects by classifying the plurality of objects into a plurality of groups and for rendering the plurality of objects by each group so that the cache miss does not occur, and, in a case where the determination unit does not determine that the cache miss occurs, generate a bitmap corresponding to the plurality of objects by executing rendering without classifying the plurality of objects into the plurality of groups.
摘要:
An image processing device includes: a drawing command transfer unit that transfers a drawing command for generating image data in a third region of a second storage unit to a first region of a first storage unit; a drawing unit that generates band image data in units of a band having a lower height compared with one page and a predetermined width, in accordance with the drawing command in the first region; a band image data transfer unit that transfers the band image data to a second region of the first storage; and an image transfer unit that transfers the band image data in the second region to a fourth region of the second storage unit. The drawing unit determines the first region according to a size of the drawing command, and determines the second region by subtracting the first region from a region of the first storage unit.
摘要:
A method for controlling printing of a print job involves portioning the print job into a plurality of parts via a partition manager, and converting each part of the print job into respective binary image data parts via a Raster Image Processor (RIP) manager. The method further involves controlling a rate of aggregation of the converted parts via a throttle control manager. The rate of aggregation is controlled by monitoring parameters of a printing system used to perform the printing of the print job, determining that at least one of the monitored parameters reaches or exceeds a predefined threshold, and manipulating the rate of aggregation of the converted parts in response to the determining according to a throttle mode predefined for a particular set of monitored parameters.
摘要:
A rendering process is not distributed in units that take into consideration an object construction. The rendering process divides printing data into page units, generates a plurality of divided printing data, merges divided printing data related to the same double spread page from the plurality of divided printing data, and converts each of the merged divided printing data into bitmap data by a plurality of rendering units.
摘要:
Systems and methods of reusing binary bitmaps for images appearing multiple times in a print job. In one embodiment, a system stores a binary bitmap for an image that appears in a print job. The system determines an offset of the binary bitmap into a sheetside, and calculates position values for the binary bitmap based on the offset of the binary bitmap. The system identifies a next appearance of the image in the print job, determines an offset of the image into a sheetside for the next appearance, and calculates position values for the next appearance of the image based on the offset of the image. The system determines if the position values for the image correspond with the position values for the binary bitmap, and verifies that the binary bitmap is reusable for the next appearance of the image if the position values correspond.
摘要:
An image forming apparatus receives raster image data transferred from an external device and forms an image on the basis of the received raster image data. The apparatus includes a processor that controls a transfer of the raster image data from the external device, a first memory connected to the processor through a first bus is used as a working area of the processor, a second memory that stores the raster image data, a memory control unit connected to the second memory through a second bus controls an operation of writing and reading the raster image data in and from the second memory, a printer engine that forms an image on the basis of the raster image data, and an engine control unit that reads the raster image data from the second memory through the memory control unit and supplies the printer engine with the read raster image data.
摘要:
Disclosed is a print data generation device comprising: a storage unit including: a region in which there are temporarily stored data in an intermediate language format between data in a page description language format and print data, and the print data to be generated based on the data in the intermediate language format; and a rasterization region for use at a time when rasterization processing in which the print data is to be generated based on the data in the intermediate language format is executed; and a control unit that includes a plurality of arithmetic operation parts, sets arithmetic operation parts which execute the rasterization processing based on a status of use of the arithmetic operation parts and a status of a free region of the storage unit, and executes the rasterization processing for each of the set arithmetic operation parts.
摘要:
This invention is directed to a method and apparatus for raster image processing which allows access to the page buffer during raster image processing. The method and apparatus of the present invention allow for virtually every page presented to the raster image processor to be printed with available memory. In addition, the method and apparatus for raster image processing of the present invention significantly reduces the bandwidth required between the raster image processor and the raster image processor manager. In addition, the method and apparatus for raster image processing of the present invention has equal or better performance than those methods or apparatuses that use display lists. Further, the method and apparatus of the present invention support the use of tag data and multiple page description languages.
摘要:
An image-forming system prevents a print overrun error even if there are bands of divided data having different band heights. An image-forming system has a band divider to divide image data into a plurality of bands each containing divided image date, a loader to load the bands into a band memory, and an output unit to sequentially output the bands from the band memory to a print engine at predetermined timing. The band divider can change the height of at least one of the bands from the height of the remaining bands. The band memory includes VRAMs into which a band of bitmap data whose band height is higher than a threshold is loaded and an auxiliary VRAM (VRAM-special) into which a band of bitmap data whose height has been changed.
摘要:
The present invention is directed to providing, in an apparatus and method for generating print commands suited to a particular printing apparatus, both high-speed printing of simple pages that are relatively easily processed as well as improved continuous throughput of complex pages that are relatively difficult to process. The apparatus obtains and integrates data size and command numbers from the generated print commands and switches the print command generation from page units to band units when it appears likely that the page memory will be exceeded, thus mixing page unit print commands and band unit print commands in the same page to achieve improved throughput.