Miscellaneous active electrical nonlinear devices – circuits – and – Specific identifiable device – circuit – or system – With specific source of supply or bias voltage
Reexamination Certificate
2007-10-03
2010-02-23
Cox, Cassandra (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Specific identifiable device, circuit, or system
With specific source of supply or bias voltage
C327S540000
Reexamination Certificate
active
07667531
ABSTRACT:
A signal transmission circuit having four lanes includes a constant voltage circuit to generate a constant voltage, a current supply circuit, and differential driver circuits respectively placed for the lanes. The current supply circuit receives a constant voltage from the constant voltage circuit and generates four currents having a value corresponding to a prescribed voltage-current conversion ratio and outputs them in parallel. The differential driver circuits respectively receive the currents output from the current supply circuit and output a voltage having an amplitude corresponding to the prescribed voltage-current conversion ratio. The current supply circuit includes a voltage divider circuit and an analog selector, which form a current supply control circuit capable of changing the voltage-current conversion ratio.
REFERENCES:
patent: 2006-60320 (2006-03-01), None
Cox Cassandra
McGinn IP Law Group PLLC
NEC Electronics Corporation
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