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This article proposed calibration results of a real-time wafer positioning system using machine vision. We developed a novel wafer positioning system which comprises two line-shaped beams spreading toward a scattering surface on the way of wafer transfer. A CCD (charge coupled device) camera mounted above the scattering surface takes images, and these images are processed and analyzed to compute the...
This study proposed a novel method for real-time detection of wafer position on a robot blade during the transfer process. The wafer positioning system comprises two line-shaped beams spreading toward a scattering surface on the way of wafer transfer. The images taken from a CCD (charge coupled device) camera mounted above the scattering surface are analyzed, and the instant position of the wafer...
This paper presents an application of AES (Advanced Encryption Standard) operations in image encryption and decryption. The encrypted cipher images always display the uniformly distributed RGB pixels. It looks like the noise of TV without signals. However, in some cases the ECB mode operation may appear a kind of pattern in the area related to the portion of the original image having the same color...
Advance Encryption Standard (AES) hardware implementation in FPGA as well as in ASIC has been intensely discussing, especially in high-throughput over several tens Giga bit per second (Gbps). However, lower throughput and low area designs have also been investigated in recent years for the embedded hardware applications. This paper presents a 32-bit AES implementation with a low area of 110 slices...
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