• Journal of the Semiconductor & Display Technology
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• v.23 no.3
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• pp.1-6
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• 2024

Recent research on embedded systems has become increasingly important due to their central role in high-performance embedded devices, including artificial intelligence, autonomous driving, and energy management technologies. Embedded systems are specialized computer systems designed to perform specific tasks while optimizing performance and minimizing memory usage. RISC-V, an open RISC-based instruction set architecture developed by the University of Berkeley in 2010, is well-suited for these systems. In addition to the base 32-bit integer instruction set, RISC-V supports extensions such as the M-extension for multiplication and division and the C-extension for instruction compression. In this paper, we propose the design of a 32-bit 5-stage pipeline RV32IMC processor aimed at high-performance embedded devices. By incorporating the RV32IMC instruction set, the proposed processor achieves enhanced computational efficiency and reduced code size, making it a strong candidate for energy-efficient, high-performance embedded applications. Furthermore, the design was validated on an Artix-7 field-programmable gate array, demonstrating the processor's feasibility and potential benefits for embedded systems.

• Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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• 2006.11a
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• pp.147-148
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• 2006

Ge nanocrystals(NCs)-embedded MOS capacitors are charactenzed in this work using capacitance-voltage measurement. High-k dielectrics $HfO_2$ are employed for the gate material m the MOS capacitors, and the C-V curves obtained from $O_2-$ and $NH_3$-annealed $HfO_2$ films are analyzed.

• ETRI Journal
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• v.31 no.3
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• pp.339-341
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• 2009

Built-in redundancy analysis (BIRA) is widely used to enhance the yield of embedded memories. In this letter, a new BIRA method for both high repair efficiency and small hardware overhead is presented. The proposed method performs redundancy analysis operations using the spare mapping registers with a covered fault list. Experimental results demonstrate the superiority of the proposed method compared to previous works.

• Proceedings of the IEEK Conference
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• 2008.06a
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• pp.771-772
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• 2008

In this paper, we analyze the characterization of Mibench, an embedded system benchmark program, using simplescalar simulator. The experimental results show Mibench generally is formed by lots of integer and memory access instructions. Especially, IPC of rijndael decoding is effected by cache size largely, but IPC of CRC32 is few effected by cache size or branch predicting algorithm.

• Proceedings of the IEEK Conference
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• 2003.11a
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• pp.99-102
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• 2003

Computing environments of Embedded Systems are different from those of desktop computers so that they have resource constraints such as CPU processing, memory capacity, power, and etc.. Thus, when a desktop S/W is ported into embedded systems, optimization should be seriously considered. In this paper, we investigate several S/W optimization techniques to be considered for porting H.263 encoder into a high performance DSP, TMS320C6711. Through experiments, it is found that optimization techniques employed can make a big performance improvement.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.22 no.7
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• pp.1394-1402
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• 1997

In this work, an efficient test algorithm and BIST architeture a for embedded memories are presented. The proposed test algorithm can fully detect stuck-at fault, transition fault, coupling fault. Moreover, the proposed test algorithm can detect nighborhood pattern sensitive fault which could not be detected in previous march test algoarithms. The proposed test algorithm perposed test algorithm performs testing for neghborhood pattern sensitive fault using backgroung data which has been used word-oriented memory testing.

• IEMEK Journal of Embedded Systems and Applications
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• v.15 no.6
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• pp.299-305
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• 2020

We have developed a scheduler that additionally consider network performance by extending the Kubernetes developed to manage lots of containers in cloud computing nodes. The network delay adapt characteristics of the compute nodes were learned during server operation and the learned results were utilized to develop placement algorithm by considering the existing measurement units, CPU, memory, and volume together, and it was confirmed that the low delay network service was provided through placement algorithm.

• Journal of Korea Multimedia Society
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• v.7 no.12
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• pp.1754-1764
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• 2004

Lately mobile handheld devices such as Personal Digital Assistant (PDA) and cellular phones are getting more popular for personal web surfing. However, today most mobile handheld devices have relatively poor web browsing capability due to their low performance so their users have to suffer longer communication latency than those of desktop Personal Computers (PCs). In this paper, we propose an effective pre-refresh mechanism for embedded web browser of mobile handheld devices to reduce this problem. The proposed mechanism uses the idle time to pre-refresh the expired web objects in an embedded web browser's cache memory. It increases the utilization of Central Processing Unit (CPU) power and network bandwidth during the idle time and consequently reduces the client's latency and web browsing cost. An experiment was done using a simulator designed by us to evaluate the efficacy of the proposed mechanism. The experiment result demonstrates that it has a good performance to make web surfing faster.

• Proceedings of the IEEK Conference
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• 2002.06d
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• pp.231-234
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• 2002

As control programs are becoming larger and more complex, the capacity of a microprocessor in a TV set needs to have a CPU with 32 bits or more. Also the embedded system such like a digital TV set uses RTOS (Real Time Operating System)[1]. LGE Co. has developed a digital TV system that displays HD (High definition) signal with the AR7TDMI CPU and the commercial RTOS[2]. This thesis made improvements on problems caused by porting embedded LiNUX in limited size memory (2 mega byte) instead of RTOS[3]. The advantages of changing to embedded LiNUX take away running OS royalty that needed to make TV sets[4].

• Journal of Korea Multimedia Society
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• v.6 no.2
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• pp.183-193
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• 2003

The importance of XML data and their database supports in a mobile terminal system is on the increase. It leads to active research for embedded XML database systems. In order to handle in documents, DOM API should be supported. The existing DOM API is not suitable for the embedded system with limited resource because the DOM tree requires a large space on main memory. Considering poor resource of embedded systems, we present persistent DOM which is implemented on Berkeley DB and DOMdbm which manages it.