Electronic digital logic circuitry – Interface – Logic level shifting
Reexamination Certificate
2004-07-28
2009-06-09
Barnie, Rexford (Department: 2819)
Electronic digital logic circuitry
Interface
Logic level shifting
C326S063000
Reexamination Certificate
active
07545172
ABSTRACT:
A voltage converting device (1) receiving a input signal (Si1) having a high input voltage (Vi_high) and a low input voltage (Vi_low), converting a voltage level of the input signal (Si1), and outputting the input signal (Si1) as a output signal (So1), wherein the voltage converting device (1) comprises a first input portion (In1) for receiving the input signal (Si1), a first output portion (Out1) for outputting the first output signal (So1), and a voltage converting means for converting at least one of the first high input voltage and the first low input voltage, the voltage converting means having a TFT (2) for switching among at least two states containing a connection state in which the first input portion (In1) is connected to a first node (N1) and a disconnection state in which the first input portion (In1) is disconnected from the first node (N1), and wherein the voltage converting means comprises a first voltage dropping means for dropping a voltage on the first node (N1) before changing from a state in which the first input portion (In1) is disconnected from the first node (N1) to a state in which the first input portion (In1) is connected to the first node (N1).
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Supplementary European Search Report for Counterpart EP Patent Application No. EP04770988.
Barnie Rexford
Liu & Liu
TPO Hong Kong Holding Limited
Tran Thienvu V
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