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We present ClearPlate-a new optical unit for an image capture device. It has a physically transparent viewfinder through which the user can observe the target directly without offset; the framed image is captured by the built-in camera. We also present a user study that evaluates ClearPlate performance in the 2D code acquisition task. Results show that ClearPlate significantly outperforms the camera-phone-based...
This paper proposes a configuration and a dynamic wavelength and bandwidth allocation for the upstream signal in 40 Gbit/s λ-tunable stacked-WDM/TDM-PON. An upstream transmission experiment with 10 Gbit/s burst-mode receivers and fast-switching tunable filters is first demonstrated.
We describe a simple and scalable WDM/TDMA PON system that uses spectral slicing and FEC in burst-mode upstream transmissions. The sensitivity was improved to -31.5 dB at a sliced bandwidth of 400 GHz with FEC.
An ac-coupled burst-mode receiver (B-Rx) for 10-Gbit/s class PON systems that uses a novel baseline-wander common-mode-rejection (BLW-CMR) technique and an inverted distortion technique is proposed and demonstrated. The realization of 10-Gbit/s class PON systems requires the development of a B-Rx with high sensitivity, a wide dynamic range, and a fast response for handling the burst-mode data. The...
We propose and demonstrate a 1.25/10.3-Gbit/s dual-rate burst-mode receiver with two gate circuits to separate the signals according to the bit rate of the input signals. This receiver is cost effective because it employs devices with an ac-coupled interface and no reset signals.
We propose the system for the mobile robot navigation with a laser source on the ceiling. At first, users make a navigation path which shows where the mobile robot should go. Base on the navigation path information, the laser spot is automatically irradiated to the ground. Then, the mobile robot detects the position of the laser spot by the optical sensor array and follows the trajectory of the laser...
We proposed the laser navigation system navigating a mobile robot with a laser source and considered the effectiveness. As the result of our research, we proved we could navigate the mobile robot by the laser navigation system. However, the optical sensor array decided the operating range and the angle of incident laser. Therefore, we added a pan and tilt mechanism to the optical sensor array and...
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