Resources Contact Us Home
Image sensor with a plurality of pixels, pixel circuit and method

Image Number 4 for United States Patent #7652240.

An image sensor has a plurality of pixels, each pixel having a photodiode (12), a voltage amplifier (16) having gain magnitude greater than 1 and a sampling capacitor (18) charged by the voltage amplifier. In this arrangement, each pixel provides gain through voltage amplification. This enables the sampling capacitor to be kept to a low size, so that the pixel circuitry occupies the smallest possible space, thereby enabling large aperture pixels to be formed. A source-follower buffer transistor (49) is provided at the input to the voltage amplifier. This overcomes the effect of charge sharing resulting from the parasitic capacitances of the output transistor of the voltage amplifier.

  Recently Added Patents
Server chassis
Character input device and program for displaying next word candidates based on the candidates' usage history
Photoacoustic joulemeter utilizing beam deflection technique
Light-emitting element, light-emitting device, and electronic device
Architecture, system and method for testing resistive type memory
Bitter taste receptors
  Randomly Featured Patents
Artificial turf infill and artificial turf including the same
Integrated circuit with memory built-in self test (MBIST) circuitry having enhanced features and methods
Cabinet door lock
Card connector which can be connected to a plurality of kinds of cards different in width
Device and process for alignment of machines, machine parts or other technical articles
Chisel retaining device
Displaying a subsampled video image on a computer display
Aerosolization device
Disk cartridge, its door opening and closing mechanism and disk drive