Patent ID: 7446806

Claim:
A system for imaging a one-dimensional coded symbol, comprising: a single, solid-state, complementary metal-oxide semiconductor (CMOS) chip; an analog front end integrated on the single chip and including a linear array of pixels, each pixel having a photodiode for converting incident light into an electrical analog signal, and an analog-to-digital converter (ADC) for each photodiode and operative for converting the analog signal to an electrical digital signal, the front end including noise suppression circuitry for each pixel, the noise suppression circuitry including means for pulsing a respective photodiode to convert the incident light to the analog signal during an exposure time period, and means for sampling the analog signal after the exposure time period has begun to generate a reference signal, and for again sampling the analog signal before the exposure time period has ended to generate a data signal; and a digital back end integrated on the single chip and including a digital processor for processing the digital signal into a digitized output signal having information related to the imaged symbol.