PASADENA, Calif. -- Photobit Corp., which already holds for patents for "active-pixel" circuitry and "camera-on-a-chip" designs, has added a third broad patent for sensor technology to its IP portfolio.
The new patent (5,990,506), titled "Active-Pixel Sensors with Substantially PlanarizedColor Filtering Elements," covers the basic light-filtering process by which CMOS image sensors capture color.
Photobit president and CEO Sabrina Kemeny and chairman and chief scientist Eric Fossum are
listed as co-inventors on the new patent.
Fossum is also credited with leading a team that invented CMOS active-pixel sensor technology at NASA's Jet Propulsion Laboratory in the early 1990s.
Since filing for its patents, Photobit's engineering teams have reached several milestones using the sensor technology, said Kemeny. "We've produced the world's fastest megapixel CMOS image sensor, used in machine vision, and the world's lowest-power image sensor, which will enable video watches, among other devices."
Photobit now holds a total of 13 patents, with more than 70 additional patents pending.