Single-chip eye tracker using smart CMOS image sensor pixels

Dongsoo Kim, Seunghyun Lim, Gunhee Han

Research output: Contribution to journalArticle

9 Citations (Scopus)


The eye tracker is a system that detects the point where the user gazes on. The conventional eye tracker using a Charge-Coupled Device (CCD) camera needs many peripherals and software computation causing high cost, computation time and power consumption. This paper proposes a single-chip eye tracker using smart CMOS Image Sensor (CIS) pixels. The proposed eye tracker does not require additional peripherals and operates at higher speed than the conventional approach. The prototype chip was designed and fabricated for a 32 × 32 smart CIS pixels array with a 0.35-μ m CMOS process. The test results show ± 1 pixel error at the rate of 125 frame-per-second. The power consumption is 260 mW with 3.3 V supply voltage and the silicon area is 3.8 mm2.

Original languageEnglish
Pages (from-to)131-141
Number of pages11
JournalAnalog Integrated Circuits and Signal Processing
Issue number2
Publication statusPublished - 2005 Nov 1


All Science Journal Classification (ASJC) codes

  • Signal Processing
  • Hardware and Architecture
  • Surfaces, Coatings and Films

Cite this