Computer graphics processing and selective visual display system – Display driving control circuitry
Reexamination Certificate
2011-07-26
2011-07-26
Nguyen, Kimnhung (Department: 2629)
Computer graphics processing and selective visual display system
Display driving control circuitry
C345S173000, C345S179000, C178S018010, C714S027000
Reexamination Certificate
active
07986313
ABSTRACT:
Embodiments of the present invention are directed to performing boundary scanning without using a pin which is exclusively dedicated for that purpose. The boundary scan can be performed by an integrated circuit by utilizing a pin which has an alternative use during ordinary operation of the integrated circuit and the device. This pin can be connected to an analog circuit configured to sense capacitance outside of the pin. The analog circuit may also have an alternative function in normal operation of the device. During a testing mode, the analog circuit can sense a stray capacitance present at the pin. The sensed capacitance can be compared to one or more stored expected capacitance values to determine an interconnection state of the system.
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Apple Inc.
Morrison & Foerster / LLP
Nguyen Kimnhung
LandOfFree
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