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Optically reconfigurable gate arrays (ORGAs) have been developed as a type of multi-context field programmable gate array to realize fast reconfiguration and numerous reconfiguration contexts. Along with such advantages, ORGAs have high defect tolerance. They consist simply of a holographic memory, a laser diode array, and a gate array VLSI. Even if a gate array VLSI includes defective areas, the...
In previously proposed ORGAs, the optical reconfiguration period was designed to be constant by assuming a worst-case reconfiguration speed. However, the diffraction efficiency of a holographic memory differs depending on the number of bright bits included in a configuration context. Therefore, previous ORGAs can not fully exploit reconfiguration performance. For that reason, this paper presents a...
Recently, to realize large real-time systems, demands for fast computation on large VLSI have continued to increase. An optically reconfigurable gate array has been developed to realize large virtual gates. As part of that research effort, the world's largest 11,424 gate-count dynamic optically reconfigurable gate array VLSI chip, which is based on a concept using junction capacitance of photodiodes...
Optically reconfigurable gate arrays (ORGAs), which consist of a gate array VLSI, a holographic memory, and a laser diode array, are a type of programmable gate array that can achieve rapid reconfiguration and numerous reconfiguration contexts. The gate array of an ORGA is optically reconfigured using diffraction patterns from a holographic memory that is addressed using a laser diode array. Up to...
Optically reconfigurable gate arrays (ORGAs) have been developed to realize a large virtual gate count by adding a holographic memory onto a programmable gate array VLSI. Up to now, dynamic optically reconfigurable architecture has been proposed to increase the gate count of the ORGA-VLSI part, which uses photodiodes as dynamic memory to store a configuration context and perfectly removes static configuration...
To increase gate density, a dynamic optically reconfigurable gate array (DORGA) architecture has been proposed that uses the junction capacitance of photodiodes as dynamic memory, thereby obviating the static configuration memory. To date, estimation of the DORGA architecture using a liquid crystal holographic memory has been conducted, thereby demonstrating its availability. However, because the...
This paper presents a perfect dynamic optically reconfigurable gate array (DORGA) architecture emulation using a holographic memory and a conventional ORGA-VLSI. In ORGAs, although a large virtual gate count can be realized by exploiting the large-capacity storage capability of a holographic memory, the actual gate count, which is the gate count of a programmable gate array VLSI, is important to increase...
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