Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Patent
1995-10-02
1999-02-02
Liang, Regina
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
345147, G09G 322
Patent
active
058671366
ABSTRACT:
An apparatus is provided for modulating a conductive element in an FED device from a first level to a second level in which the charge on the display is conserved. In one embodiment, the apparatus comprises an analog modulating circuit, a switching circuit, and a switch. The analog modulating circuit receives a feedback signal responsive to an actual row-column voltage difference and a target signal responsive to a desired row-column voltage difference and generates an output signal responsive to the feedback signal and the target signal. The switching circuit generates a switching signal responsive to the feedback signal, the target signal, and a bias signal. The switch connects a reference voltage to the output generated by the analog modulating circuit in response to the switching signal. In another embodiment, the apparatus has a primary modulator having a first input connected to a first signal representative of the second level, an output connected to the conductive element, and a second input connected to a first signal representative of the output; and a connector of a modifying voltage to the output, the connector having a first input connected to a second signal representative of the second level and a second input connected to a second signal responsive to the output.
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Liang Regina
Micron Display Technology Inc.
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