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For Internet of Things (IoT) edge devices, it is very attractive to have the local sensemaking capability instead of sending all the data back to the cloud for information processing. For image pattern recognition, neuro-inspired machine learning algorithms have demonstrated enormous powerfulness. To effectively implement learning algorithms on-chip for IoT edge devices, on-chip synaptic memory architectures...
The analog-to-digital converter (ADC) is an essential component providing the interface between the sensed analog signal and the corresponding digital representation for a portable ultrasonic systems. In order to extend the battery life for the portable system, a low-voltage ADC is crucial for saving the power. However, the sensed analog signal is usually larger than the tolerable range of a low-voltage...
Loss less data hiding, also known as reversible data hiding, is a newly developed research field and relating applications in digital rights management (DRM). Secret information can be hidden into original image at the encoder, and then image containing secret data is delivered to the decoder. For decoding, original image and secret information need to be perfectly recovered from the received image...
This work proposes a fractional phase error compensation approach for a classical fractional-N phase-locked loop (PLL) to reduce fractional spurs. The proposed corresponding-phase compensation technique incorporates a divider array and an auxiliary charge pump pair to overcome the fractional phase error. The main advantage of the proposed fractional-N PLL is that it only uses a constant compensation...
A readout circuit for the linear array pH sensor was designed and developed, using chopper stabilization technique. It consisted of analog multiplexer, chopper stabilized operational amplifier, level shift, filter and buffer stage. The operational amplifier used in this design was a folded cascade amplifier. Results showed that the circuit can reduce input offset, drift voltage and noise. Moreover,...
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