Printing internal memory managing method for improving intenral memory availability
A memory management and utilization technology, applied in the direction of printing device, digital output to printing unit, printing, etc., can solve the problems of timely completion within time, incorrect output of pages, and insufficient improvement of memory utilization, so as to avoid printing errors , the effect of improving the utilization rate
Inactive Publication Date: 2008-01-09
BEIJING FOUNDER ELECTRONICS CO LTD +1
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Problems solved by technology
[0004] Divide a page into several segments, and first interpret the page data into an intermediate format arranged by segment. The data in this intermediate format is easier to convert into the final raster matrix, and the memory occupied by the data in this intermediate format is usually Much smaller than the raster dot matrix of the page, the printer can start printing after rasterizing a section first, and generate the raster dot matrix of the next section in real time during the printing process of the previous section, which can not only improve the printing speed, but also does not require a large memory However, the shortcoming of this method is that once a certain section of data is very complicated, the printer may not be able to complete the rasterization of this section in time during the previous printing period. A print overrun error will occur, and the page will not be output correctly
Since the segmentation-based printing method usually requires more memory at the beginning of printing, the demand for memory will gradually decrease during the printing process, so this method does not fully improve the utilization of memory.
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[0065] Below in conjunction with accompanying drawing, the present invention will be further described:
[0066] As shown in Figure 1, the specific implementation scheme of a printing memory management method that can improve the memory utilization rate involved in the present invention is as follows:
[0067] (1) First, as indicated by the mark 101 in Fig. 1, a time stamp is generated for the page that is currently receiving data. Timestamp is the unique sign of each page, which identifies the sequence of pages. The page with the smaller timestamp has higher priority in using memory, thus ensuring that the previous pages will not cause insufficient memory due to the memory application of the later pages;
[0068] (2) judging whether the memory mode is a shared mode, if not, then as shown in reference numeral 102, hang up and wait until the mode of the memory becomes a shared mode;
[0069] (3) Next, as indicated by reference numeral 103, the printing device receives the page...
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A memory management method for increasing the utilization rate of memory in printer features that the memory space reservation is requested before printing and the memory space is dynamically allocated during printing.
Description
technical field [0001] The invention belongs to the technical field of printing control, and in particular relates to a printing memory management method capable of improving memory utilization. Background technique [0002] In the prior art, the entire workflow of printing a page by a common raster printing device can be divided into three parts: first, receive print data from the host; then rasterize the print data into a raster dot matrix; finally transmit the raster dot matrix to the print engine output. [0003] Usually, in order to reduce the amount of memory required, many raster printing devices use the following printing control methods: [0004] Divide a page into several segments, and first interpret the page data into an intermediate format arranged by segment. The data in this intermediate format is easier to convert into the final raster matrix, and the memory occupied by the data in this intermediate format is usually Much smaller than the raster dot matrix ...
Claims
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IPC IPC(8): B41J2/44B41J29/38G06F3/12
Inventor 林兆祥刘志红
Owner BEIJING FOUNDER ELECTRONICS CO LTD