Abstract:
A read out circuit for an active pixel sensor array is provided. The read out circuit includes a first circuit, coupled to a pixel of the array, to receive from the pixel information indicative of an intensity of light detected by the pixel and to drive the information to a read out device when the pixel is accessed. The read out circuit further includes a second circuit, coupled to the first circuit, to reset the read out device prior to access to the pixel.
Abstract:
A method for providing an improved active pixel sensor cell having a soft-saturation circuit. The method includes providing a pixel node and a photodiode coupled to the pixel node. The photodiode receives light and converts the light into an electrical signal representative of light. A soft-saturation circuit for selectively affecting the electrical signal at the pixel node based on the electrical signal at the pixel node based on the electrical signal at the pixel node is also provided.
Abstract:
A circuit that includes at least two driver circuits. Each driver circuit receives analog information and drives a value related to the analog information to an analog bus. Each driver circuit also includes a select transistor to pass the value related to the analog information to the analog bus when the driver circuit is selected. The select transistor includes a source and a bulk. Each driver circuit further includes a bulk potential control circuit (BPCC) to couple the bulk to the source when the driver circuit is selected and to couple the bulk to a voltage supply when the driver circuit is not selected.