Pointing device with a controller used for monitoring a protocol selector signal derived from a computer to select one of a compatibility function and an additional function
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Feb 21, 2006
Grant Date -
Mar 25, 2004
app pub date -
Sep 25, 2003
filing date -
Oct 14, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A pointing device has a controllable selector for sending a version compatible signal and a newer functionality signal to a computer terminal. The pointing device has an operating unit which produces a signal which can be passed directly to the computer terminal, or can be modified with a new functionality, and then passed to the computer terminal. A controller in the pointing device monitors a protocol signal line to determine whether a version compatible signal or a new functionality signal is called for. The controller can activate a new functionality circuit and the selector to send the appropriate signal to the computer terminal. The controller can also monitor the protocol signal line in a power-on state, and execute a procedure to determine the functionality requested by the protocol signal line.
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