Pcl vertical graphics scaling using macros

Details Pcl vertical graphics scaling using macros Pcl vertical graphics scaling using macros

G - Physics

06

F

G06F 3/12 (2006.01) G06F 3/00 (2006.01) G06F 15/16 (2006.01) G06K 15/00 (2006.01) H04N 1/00 (2006.01)

Patent

CA 2041140

ABSTRACT OF THE DISCLOSURE Disclosed is a switch that allows a peripheral device, such as a PCL printer, to be shared by multiple computer systems. The switch connects to each of the computer systems, and also to the peripheral device being shared. When the second of the two systems requests access to the peripheral device, the switch causes the peripheral device to save its state temporarily while the second system uses the device. The second system prints graphics data on the printer, and scales the data as it is being printed. In one, for each line being printed, the system saves the printer state, sends the line of graphics to the printer, scales and prints the graphics, and restores the printer state. In another embodiment, all lines of graphics data are sent to the printer, then a command is sent to save the printer state, print all the lines, and restore the printer state.

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