Television – Camera – system and detail – Power supply
Reexamination Certificate
2006-03-28
2006-03-28
Ho, Tuan (Department: 2615)
Television
Camera, system and detail
Power supply
C348S294000, C348S241000
Reexamination Certificate
active
07019783
ABSTRACT:
An embedded power supply for providing a voltage on a detector module within an imaging system provides the required potential to the module from charge stored on an output capacitor. Charge on the capacitor is replenished by injecting, commonly referred to as pumping, current into the capacitor by pulses of current generated by switching mode circuitry. Charge pumping into the capacitor is efficient because energy is stored in low-loss passive components and transferred into the low-loss output capacitor through low-impedance paths. Switching noise of the power supply is eliminated by turning off the charge pumping circuit during periods when such noise would disrupt the operation of the module, for example when the module is reading out image data. The output capacitor is large enough to supply the required voltage to the module for a certain period when the capacitor is not being pumped.
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Carlson Lars S.
Kindem Joel
Digirad Corporation
Fish & Richardson P.C.
Ho Tuan
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