Abstract: A memory device includes a command interface configured to receive write commands from a host device. The memory device also includes an input buffer configured to buffer data from the host device. The memory device further includes a write shifter configured to receive a first write command of the write commands and to shift the first command through the write shifter. The write shifter is also configured to cause the input buffer to be disabled after a first threshold of clock cycles when the first write command has shifted through the write shifter. The write shifter is additionally configured to receive a second write command and prevent the input buffer from being re-enabled until the second write command has shifted through a second threshold of stages of the write shifter.

Abstract: A print quality enhancement arrangement for a dot matrix printer such as a thermal ink jet printer. The arrangement includes a buffer for receiving 300 dots per inch (dpi) resolution data in the horizontal (print head movement) direction and creates 600 dpi resolution data using image enhancement techniques. The arrangement further includes correction of the higher resolution data to remove pels which are unprintable due to the frequency response of the print elements in the print head. The correction is performed using knowledge of the history of printed pels and the original 300 dpi data. The creation of the higher resolution data and its correction occur "on-the-fly" as data is being fed to the print head, rather than through the creation of a 300 by 600 dpi bitmap.