Computer graphics processing and selective visual display system – Display driving control circuitry – Display power source
Reexamination Certificate
2007-05-25
2011-10-18
Wang, Quan-Zhen (Department: 2629)
Computer graphics processing and selective visual display system
Display driving control circuitry
Display power source
Reexamination Certificate
active
08040339
ABSTRACT:
Circuitry for controlling a display matrix formed of light-emitting diodes arranged in rows and columns, diodes in each row being connected to common row lines, and diodes in each column being connected to common column lines, each of the column lines being selectively connected to a current source for providing a current to each of the column lines when the column line is selected, a column voltage being present at a column node of each column line while the column line is selected, each of the row lines being selectively connected to a rowoff voltage for turning off the diodes in that row, the circuitry including circuitry for generating the rowoff voltage including: capture circuitry arranged to capture a maximum value of the column voltages present at the column nodes of a plurality of selected column lines; storage circuitry arranged to store the maximum column voltage; and output circuitry arranged to provide the rowoff voltage based on the maximum column voltage.
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Chaussy Danika
Mas Céline
Davis Tony
Jorgenson Lisa K.
Morris James H.
STMicroelectronics S.A.
Wang Quan-Zhen
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