A 90nm CMOS multimode image sensor intended for a visual cortical stimulator
Bibliographic record
Abstract
We present in this paper a variable resolution multimode digital pixel sensor (DPS). Each pixel comprises a switched-capacitor comparator with a regenerative 8-bit memory. Two supply voltages, 2.5V and IV, are used to maximize the dynamic range (DR) of the sensor. The proposed DPS has three modes of operation: linear with the option of multiple exposures, logarithmic for extended dynamic range, and high-speed differential mode for the subtraction of two consecutive images. Intended for the front-end of a visual cortical stimulator aiming at restoring sight to the blind, the proposed circuit, which encompasses a matrix of 64×48 pixels, allows acquiring images at a rate higher than 400 frames per second (fps). Implemented in a 90nm CMOS technology, each pixel has an area of 9μm times 9μm and a fill factor of 26%. A DR of up to 83 dB is obtained when the DPS is operated in its logarithmic mode.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".