Miscellaneous active electrical nonlinear devices – circuits – and – Specific identifiable device – circuit – or system – With specific source of supply or bias voltage
Reexamination Certificate
2009-01-29
2010-12-14
Donovan, Lincoln (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Specific identifiable device, circuit, or system
With specific source of supply or bias voltage
C327S539000, C327S540000, C327S541000
Reexamination Certificate
active
07852143
ABSTRACT:
A system that includes: multiple transistors that comprise a first transistor that is maintained in a weak inversion state; wherein sources of the multiple transistors are coupled to a low current source; wherein drains of the multiple transistors are coupled to a voltage supply source; a first amplifier that has a positive input, negative input and an output; wherein the positive input receives an input voltage; wherein the negative input is coupled to a source of the first transistor; wherein the output is coupled to a gate of the first transistor and to a multiplication and subtracting circuit; a multiplication and subtraction circuit that is coupled to the first amplifier and outputs an output signal that equals a difference between the input voltage and a product of a current reduction variable and a voltage reduction signal; wherein the voltage reduction signal is associated with a current reduction factor; wherein the output signal is provided to a second transistor that is maintained in weak inversion; and wherein the second transistor outputs, in response to a reception of the output signal, a current that is responsive to the pixel output signal, is proportional to the low current and is inversely proportional to the current reduction variable and the current reduction factor.
REFERENCES:
patent: 5889428 (1999-03-01), Young
patent: 2005/0242799 (2005-11-01), Erdelyi et al.
patent: 2010/0128154 (2010-05-01), Xu et al.
Eshel Noam
Golan Zeituni
Koifman Vladimir
Advasense Technologies Ltd.
Cole Brandon S
Donovan Lincoln
Reches Patents
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