11
Alexander I Krymski: Fast and accurate adjustment of gain and exposure time for image sensors. Micron Technology, Dickstein Shapiro Morin & Oshinsky, September 20, 2005: US06947077 (8 worldwide citation)

A proportional counting circuit generates count values for use in variably adjusting gain and exposure time of an image sensor array. The count values are adjusted in proportion to the current count value. This technique allows for fast and accurate adjustment of gain and exposure time without sacri ...


12
Lin Ping Ang, Alexander I Krymski: Smart column controls for high speed multi-resolution sensors. Photobit Corporation, Fish & Richardson P C, April 2, 2002: US06365886 (8 worldwide citation)

Smarts are added to a CMOS active pixel color linear image sensor operable in any of parallel-packed, pixel-packed, and line-packed readout mode, to provide the added feature of variable imaging resolution operability. By combining decoder block functionality with shift selection logic to provide co ...


13
Eric R Fossum, Alexander I Krymski, Roger A Panicacci, Christopher Clark: Digital exposure circuit for an image sensor. Round Rock Research, Lerner David Littenberg Krumholz & Mentlik, November 8, 2011: US08054339 (7 worldwide citation)

Automatic exposure adjusting device considers the image on a pixel-by-pixel basis. Each pixel is characterized according to its most significant bits. After the pixels are characterized, the number of pixels in any particular group is counted. That counting is compared with thresholds which set whet ...


14
Eric R Fossum, Alexander I Krymski, Roger A Panicacci, Christopher Clark: Digital exposure circuit for an image sensor. Round Rock Research, Lerner David Littenberg Krumholz & Mentlik, October 18, 2011: US08040394 (7 worldwide citation)

Automatic exposure adjusting device considers the image on a pixel-by-pixel basis. Each pixel is characterized according to its most significant bits. After the pixels are characterized, the number of pixels in any particular group is counted. That counting is compared with thresholds which set whet ...


15
Alexander I Krymski, Kwang Bo: Low voltage analog-to-digital converters with internal reference voltage and offset. Micron Technology, Dickstein Shapiro Morin & Oshinsky, March 22, 2005: US06870496 (7 worldwide citation)

An A-to-D converter system having programmed reference signal levels using only supply signal provided by a power supply is disclosed. The converter system includes a comparator configured to provide comparison of an analog input signal with an adjustable reference level. The converter system also i ...


16
Alexander I Krymski: Low-voltage common source switched-capacitor amplifier. Photobit Corporation, Fish & Richardson P C, April 11, 2000: US06049247 (6 worldwide citation)

The present disclosure describes a low-voltage switched-capacitor amplifier circuit that operates with supply voltage as low as one volt. The switched-capacitor amplifier circuit includes a voltage-amplifying transistor configured in a switched-capacitor network by an input capacitor and a feedback ...


17
Alexander I Krymski: CMOS voltage comparator capable of operating with small input voltage difference. Photobit Corporation, Fish & Richardson P C, February 6, 2001: US06184721 (4 worldwide citation)

A circuit for use in comparing input voltages includes switching elements initially configured in a reset mode to minimize charge or current conduction before entering a comparison mode. A strobe signal reconfigures the switching elements to transition from the reset mode to the comparison mode. Fin ...


18
Alexander I Krymski, Kwang Bo: Low voltage analog-to-digital converters with internal reference voltage and offset. Photobit Corporation, Fish & Richardson P C, November 5, 2002: US06476751 (4 worldwide citation)

An A-to-D converter system having programmed reference signal levels using only supply signal provided by a power supply is disclosed. The converter system includes a comparator configured to provide comparison of an analog input signal with an adjustable reference level. The converter system also i ...


19
Alexander I Krymski: Wide dynamic range operation for CMOS sensor with freeze-frame shutter. Micron Technology, Dickstein Shapiro, April 24, 2007: US07209166 (3 worldwide citation)

Wide dynamic range operation is used to write a signal in a freeze-frame pixel into the memory twice, first after short integration and then after long integration. The wide dynamic range operation allows the intra-scene dynamic range of images to be extended by combining the image taken with a shor ...


20
Alexander I Krymski: Low-voltage comparator with wide input voltage swing. Photobit Corporation, Fish & Richardson P C, November 14, 2000: US06147519 (3 worldwide citation)

A low voltage comparator for amplifying a voltage difference between a pair of differential inputs. A boost capacitor charges to a boost voltage in excess of the low supply voltage, a differential pair of MOSFET transistors, each said transistor including a gate, a source, a drain, and a body termin ...