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US 6,487,250 B1Granted
Signal output system
AssigneeMitsubishi Denki Kabushiki Kaisha
InventorsTetsuro Kato, Seiichi Saito, Keitaro Yamagishi
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Abstract
When a change of an output signal is detected by an output-signal-state-change detector, a continuous-change performing part controls an output impedance changing part, which is provided between an output buffer and a signal line, so as to continuously change an output impedance from low impedance to high impedance, at the changing timing of the output signal.
Claims14
A digital signal output circuit for outputting an output signal to a signal line via an output buffer comprising:
- an output impedance changing part, connected between the output buffer and the signal line, for changing an output impedance;
- an output-signal-state-change detector for detecting a change of the output signal;
- and
- a continuous-change performing part for controlling the output impedance changing part, at a changing timing of the output signal, so as to continuously change the output impedance, when the output-signal-state-change detector detects the change of the output signal.
1 more element
Dependencies are inferred from the claim text.