Equation 5 · Part 3 · How Edge AI Electronics and Sensor Systems Actually Work

Symbol t_last event

\left|\log I(t) - \log I(t_{\text{last event}})\right| \geq C,

t_{\text{last event}}

What this part means

$t_l$ ast event is a part of this expression. Its role is fixed by the surrounding article and by the operations shown in the formula.

Its job in the formula

$t_l$ ast event is a part of this expression. Its role is fixed by the surrounding article and by the operations shown in the formula.

Full expressionSymbol t_last eventArticle meaning

The passage around this formula

An event camera, more precisely a dynamic vision sensor (DVS), inverts that design at the pixel level. Each pixel contains its own small analog circuit — a photoreceptor, a differencing amplifier, and a pair of comparators — that continuously tracks the logarithm of local light intensity and fires an asynchronous digital event only when that log-intensity has moved by more than a threshold since the pixel’s last event. Formally, a pixel emits an event when $\left|\log I(t) - \log I(t_{\text{last event}})\right| \geq C$ . where C is a contrast threshold set by an analog bias current, and each event carries just an address, a timestamp, and a sign — brighter or darker — streamed out asynchronously on a shared digital bus rather than…

Read this part in the article →

Learn the underlying idea

A subscript is a label attached below a symbol. It often selects a time step, component, category, or member of a sequence.

Open the illustrated subscripts: which member of a family? guide →

See this notation across published equations →

Sources cited in the surrounding passage

These citations provide research context; check each source for the exact claim it supports.