ALEXANDRIA, Va., March 12 -- United States Patent no. 12,250,485, issued on March 11, was assigned to OMNIVISION TECHNOLOGIES INC. (Santa Clara, Calif.).
"Low power current integration DAC ramp settling assist circuit" was invented by Tao Sun (San Jose, Calif.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A ramp generator includes an operational amplifier having an output to generate a ramp signal. An integration current source is coupled to a first input and a reference voltage is coupled to a second input of the operational amplifier. A feedback capacitor and a reset switch are coupled between the first input and the output of the operational amplifier. The reset switch is turned on to reset the ramp gene...