Inventor

LEE BUMHA

US22 patents

⚠️ This page may combine multiple inventors who share the name “LEE BUMHA”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

LEE BUMHA

NAT SEMICONDUCTOR CORP

Wide gain range and fine gain step programmable gain amplifier with single stage switched capacitor circuit

Locally boosted top plate sampling for a sampling capacitor

Duty cycle stabilizer

Reference voltage generation using compensation current method

Pipeline analog-to-digital converter

High gain and wide bandwidth switched capacitor amplifier having a dynamically loaded amplifier output

Programmable gain amplifier with single stage switched capacitor circuit using bandwidth balancing

Pipeline ADC using multiplying DAC and analog delay circuits

Method and apparatus of system offset calibration with overranging ADC

Capacitor mismatch measurement method for switched capacitor circuits

Constant boosted voltage generator circuit for feedback switches in a switched capacitor circuit

High speed, high DC gain and wide dynamic range amplifier

Bias device clamping circuit for fast over-range recovery

Constant voltage charge-pump circuit with feedback

Digital-to-analog converter with a shifted output and an increased range

EASTMAN KODAK CO

Automatic exposure control for an image sensor

Black level calibration method for imager with hysteresis comparison and adaptive step size

CMOS image sensor oversaturation protection circuit

TEXAS INSTRUMENTS INC

High-speed unity-gain input buffer having improved linearity and stability with a low supply voltage

Differential amplifier with high-speed common mode feedback

Differential analog signal processing stage with reduced even order harmonic distortion

APPLE INC

Image sensor with calibrated column analog-to-digital converters