Method and apparatus for controlling a peripheral via different data ports
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United States of America Patent
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-
May 5, 2009
Grant Date -
Oct 5, 2006
app pub date -
Feb 28, 2006
filing date -
Dec 20, 2002
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A peripheral such as a printer is controlled to receive data from different data ports. A first port receives data formatted according to a first protocol. A second port receives data formatted according to a second protocol. A first processor is associated with the peripheral. A second processor is associated with the second port. A switch is adapted to receive (i) first data from the first port and (ii) second data from the second port after processing by the second processor. The switch is controlled in response to a command received via the second port to couple either the first data or second data to the first processor for use in controlling the peripheral. New firmware can be downloaded to the peripheral via the second port in response to the command. The command can be communicated to the first processor via a separate port at the first processor and a memory shared with the second processor.
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