Computer graphics processing and selective visual display system – Display driving control circuitry
Reexamination Certificate
2007-12-18
2007-12-18
Hjerpe, Richard (Department: 2629)
Computer graphics processing and selective visual display system
Display driving control circuitry
C345S087000, C345S089000, C345S098000, C345S100000, C345S211000, C345S213000, C345S076000, C345S088000, C345S082000, C323S315000
Reexamination Certificate
active
10773334
ABSTRACT:
The invention provides a simple circuit configuration that can convert a current I1to a current I2having smooth, non-linear characteristics. The invention can include first and second resistors having one end of each of the resistors, whose resistances are different, connected to a power supply terminal to which a power supply voltage is supplied. The source of a first transistor can be coupled to the other end of the resistor, and is also connected to a gate in a saturating manner. The source of a second transistor is connected to the other end of the other resistor, and a gate of the second transistor is coupled to the gate of the first transistor, which is connected to a drain thereof in a saturating manner. The current I2flowing in a second transistor is a function equal to the square of the current I1flowing in the first transistor, thereby exhibiting smooth, non-linear characteristics.
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