High speed printing control device and method with two independent buffer storage

Abstract

The present invention belongs to the field of printer control technology, and is one printer control device with two independent buffer memories and its control method. The printer control device has two independent buffer memories for storing printed data, one input buffer selector for controlling the storage of the printed data in different buffer memories, one output buffer selector for controlling the data output circuit to obtain printed data from different buffer memories, one control signal generator for controlling the input buffer selector and the output buffer selector, one data receiving circuit for receiving printed data, and one data output circuit for outputting printed data. The high speed printer control device of the present invention has relaxed bandwidth requirement on each of the buffer memories, simplified circuit board design, reduced mutual interference between high speed devices and raised printer control device quality.

Description

technical field [0001] The invention belongs to the technical field of printer control, and in particular relates to a high-speed printing control device and a control method with two independent buffer memories. Background technique [0002] The printing control device is a control device that sends the received printing data to the printer imaging component (laser printer core or inkjet nozzle) according to the specified printing requirements to form a printed document. In order to ensure the continuity of the action of the imaging component and make up for the difference between the data receiving speed of the printing control device and the data output speed of the imaging component, the usual printing control device (see figure 1 ) have a buffer memory for buffering print data. Before starting the imaging unit to output the print data, the usual print control device needs to receive the print data and save them in the buffer memory, and wait until the print data stored...

AI Technical Summary

Problems solved by technology

[0005] This buffer memory is used as the buffer memory control structure of the input buffer memory and the output buffer memory at the same time, so that the buffer memory interface control circuit 53 must frequently switch between the read operation to the buffer memory 51 and the write operation to the buffer memory 51, thereby causing buffering. The operating frequency of the control signal 54 and the I / O data bus 55 between the memory interface control circuit 53 and the buffer memory must be more than twice the operating frequency of a single buffer memory write operation (or read operation)

In the case of high-speed printing, this will cause the buffer memory interface control circuit 53, the buffer memory 51, and the control signal 54 and the data bus 55 between the two must work at a very high operating frequency, facing difficulties in designing high-frequency control circuits, The actual board design constraints are too high and high-frequency devices interfere with each other, which leads to a decrease in the yield of the actual printing control device, which in turn increases the cost of the printing control device

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