a r t i c l e i n f o This paper presents Posterior-Weighted Active Search (PWAS), an active-sensing algorithm for classification of volatile compounds with arrays of tunable chemical sensors. The algorithm combines concepts from feature subset selection and sequential Bayesian filtering to optimize the sensor array tunings on-the-fly based on information from previous measurements. Namely, the...

The first frame-transfer CMOS active pixel sensor (APS) is reported. The sensor architecture integrates an array of active pixels with an array of passive memory cells. Charge integration amplifier-based readout of the memory cells permits binning of pixels for variable resolution imaging. A 32 32 element prototype sensor with 24m pixel pitch was fabricated in 1.2m CMOS and demonstrated.

A CMOS active pixel sensor that achieves wide intrascene dynamic range using dual sampling is reported. A 64 64 element prototype sensor with dual output architecture was fabricated using a 1.2m n-well CMOS process with 20.4m pitch photodiode-type active pixels. The sensor achieves an intrascene dynamic range of 109 dB without nonlinear companding.

A sensor with two active phrases means that active mode has two phases, the full-active phase and the semi-active phase, which require different energy consumptions. A full-active sensor can sense data packets, transmit, receive, and relay the data packets. A semi-active sensor cannot sense data packets, but it can transmit, receive, and relay data packets. Given a set of targets and a set of s...