Abstract: Embodiments of a read-out integrated circuit (ROIC) include a plurality of unit cells. Each unit cell includes a bias subsystem, a reset switch, at least one integration capacitor, and at least one read switch. A focal plane array includes a plurality of photo detectors disposed in a grid and a ROIC. A column buffer includes a first buffer subsystem, a feedback subsystem, a first and second correlated double sampling subsystem, and a second buffer subsystem. A ROIC includes at least one integration subsystem having a transistor subsection, a poly silicon layer, and a plurality of active layer sections.

Abstract: An imaging system includes a row and column array of active pixels, each having an associated pitch. In response to respective control signals, each pixel outputs a reset level which includes noise components, or a signal level which includes signal and noise components. Multiple column buffers, each having a pitch equal to or less than that of a pixel, convey the outputs of respective pixel columns to a bus line. Each buffer comprises ‘odd’ and ‘even’ S&H/CDS circuits, which process the pixel outputs of odd and even rows, respectively. Each S&H/CDS circuit subtracts pixel reset level from signal level to produce an output in which correlated noise is suppressed. Each column buffer includes a buffer amplifier which conveys the output to the bus line. A gain amplifier separate from the column buffers is coupled to the bus line such that it amplifies the outputs of a multiple column buffers.

Abstract: An adaptive low noise offset subtraction pixel and method for adaptive low noise offset subtraction is disclosed. The pixel has a photosensitive element, a current offset memorization circuit and a current subtraction circuit. The current subtraction circuit coupled to the current offset memorization circuit, and comprises a transistor selected from a group consisting of a junction gate field-effect transistor, a bipolar transistor, a MOSFET transistor with a spiral channel, and a MOSFET transistor with a buried channel. The transistor configured to receive an offset current from the current offset memorization circuit and subtract the offset current from an output signal current received from the photosensitive element to provide an offset-free signal current and a shot noise limited subtraction current.

Abstract: An imaging system includes a row and column array of active pixels, each having an associated pitch. In response to respective control signals, each pixel outputs a reset level which includes noise components, or a signal level which includes signal and noise components. Multiple column buffers, each having a pitch equal to or less than that of a pixel, convey the outputs of respective pixel columns to a bus line. Each buffer comprises ‘odd’ and ‘even’ S&H/CDS circuits, which process the pixel outputs of odd and even rows, respectively. Each S&H/CDS circuit subtracts pixel reset level from signal level to produce an output in which correlated noise is suppressed. Each column buffer includes a buffer amplifier which conveys the output to the bus line. A gain amplifier separate from the column buffers is coupled to the bus line such that it amplifies the outputs of a multiple column buffers.

Abstract: Embodiments of a read-out integrated circuit (ROIC) include a plurality of unit cells. Each unit cell includes a bias subsystem, a reset switch, at least one integration capacitor, and at least one read switch. A focal plane array includes a plurality of photo detectors disposed in a grid and a ROIC. A column buffer includes a first buffer subsystem, a feedback subsystem, a first and second correlated double sampling subsystem, and a second buffer subsystem. A ROIC includes at least one integration subsystem having a transistor subsection, a poly silicon layer, and a plurality of active layer sections.

Abstract: A method of connecting a belt clip attachment device to a personal electronic device such as a mobile phone includes providing a belt clip attachment device for connecting the mobile phone to a belt clip, the belt clip attachment device and the rear of the mobile phone constructed so that the belt clip attachment device connects to the rear side of the mobile phone through a push and twist action on the belt clip attachment device; and connecting the belt clip attachment device to the rear side of the mobile phone by pushing and twisting the belt clip attachment device relative to the rear side of the mobile phone.