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In the applications of biometric authentication and video surveillance, the image sensor is expected to provide certain degree of trust and resiliency. This paper presents a new low-cost CMOS image sensor based physical unclonable function (PUF) targeting a variety of security, privacy and trusted protocols that involves image sensor as a trusted entity. The proposed PUF exploits the intrinsic imperfection...
This paper presents the theoretical analysis and experimental results of frequency modulation (FM) due to the electromagnetic interference (EMI) to the voltage-controlled oscillators (VCO). Physical models of the oscillator core and injected signals are implemented to precisely predict the EMI. A low frequency continuous wave is injected into a 900 MHz monolithic LC-VCO, which is implemented on a...
Recent years have seen the rapid growing market of smart phones. At the same time, pirated, knockoff or refurnished phones have also flooded into the worldwide market and inflicted great loss on the mobile phone industry. Existing anti-counterfeiting, authentification and identification methods, which rely on the verification of the IDs stored in the phone memory, are vulnerable to attack. This paper...
The feasibility and quality of Memory-based Physical Unclonable Functions (MemPUFs) based on emerging Non-Volatile Memory (eNVM) technologies (Spin-Transfer Torque Magnetic Random Access Memory, Phase Change RAM, and Resistive RAM) are studied in this paper. MemPUFs using the three technologies were evaluated in terms of reliability, uniqueness and randomness using different sensing modes and under...
In order to monitor the interference in GNSS, the bearings measurement of the interference source is needed. Because the high-order cumulant (HOC) is able to suppress Gaussian nose, a music algorithm based on the Interference Bearings Measurement 4-order cumulant of circle array GNSS is put forward. The MUSIC algorithm based on HOC can be used in GNSS Interference Bearings Measurement to decrease...
In this paper, a method of detecting industrial bearing's quality based on image edge morphologic analysis and recognition technology was proposed. The image filter, enhancement and segmentation were adopted to pre-process the image and a novel image coding method based on relative direction coding was presented as well. Furthermore, an improved method based on image edge morphologic analysis was...
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