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One of the benefits of coarse grained dynamically reconfigurable processor array(DRPA) is its low dynamic power consumption by operating a number of processing elements(PE) in parallel with low clock frequency. However, in the future advanced processes, leakage power will occupy a considerable part of the total power consumption, and it may degrade the advantage of DRPAs. In order to reduce the leakage...
The power consumption of dynamically reconfigurable processing array (DRPA) is quantitatively analyzed by using a real chip layout and applications taking into account the reconfiguration power. Evaluation result shows that processing power for PEs is dominant and reconfiguration power is about 20.7% of the total dynamic power consumption. Based on the above evaluation results, we proposed two dynamic...
Three-electrode-type self-pulsating (SP) distributed feedback (DFB) laser diodes (LDs) were fabricated. Lasing mode selectivity and pulsating frequency of SP-DFB LDs were investigated experimentally and device parameter dependences were well explained by numerical simulations.
Dynamically reconfigurable processors improve the area-efficiency by executing a task with multiple hardware contexts. The maximum operational frequency is limited with a context which has the largest delay time, and it causes a certain overhead when each context has various delay time. A context dependent dynamic clock control method, which changes the clock so as to fit the current operational context,...
We propose a new design of an ultra-high frequency pulsation laser, taking advantage of a phase shift effect. Injection locking function at 168 GHz and 210 GHz using sub-harmonic optical clock signals was experimentally verified for the first time.
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