• Journal of the Institute of Convergence Signal Processing
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• v.6 no.4
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• pp.169-175
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• 2005

In recent, implementation of the embedded system is gradually in the spotlight of world-wide by information technology(IT) engineers. By this time, an implementation of real time system is limited on image acquisition and processing system in practical. In this paper, the USB camera interface system based on the embedded linux OS is implemented using USB 2.0 camera with low cost. This system can obtain image signals into the memory via X-hyper255B processor from USB camera. It is need to initialize USB camera by the Video4Linux for the kernel device driver. From the system image capturing and image processing can be performed. It is confirmed that the image data can be transformed to packet of Network File System(NFS) and connected to the internetwork, then the data can be monitored from the client computer connected to the internetwork.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2004.05b
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• pp.37-40
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• 2004

This paper is about Multi-function RFID Reader Platform that receives RF TAC data and transfer data to HOST PC through Blue-Tooth USB, RS-232 and Ethernet. This Reader system is composed of RFID Module, ARM Processor, RS-232, US5 and Ethernet Interface, etc.. The information of Tag stretches the RFID module through the antenna and is received at the ARM processor. ARM processor accomplishes the facility to deliver these informations at the PC server using the Blue-tooth Interface for the wireless and the RS-232, USB and Ethernet MAC Interface for the wire.

• Proceedings of the Korea Information Processing Society Conference
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• 2009.11a
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• pp.47-48
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• 2009

많은 개발자들은 프로세서 디버깅을 위해 GDB를 사용한다. 임베디드 시스템에서 GDB의 원격 디버깅은 시리얼 통신을 사용한다. 그러나, 시리얼 통신은 속도에 제한이 있으며, 시리얼 포트 마저 점차 사라져 가는 추세이다. 이를 극복하기 위해 많은 임베디드 시스템이 JTAG 인터페이스를 탑재하고 있으며, USB 인터페이스를 사용하여 통신을 한다. 이 논문에서는 EISC 아키텍처 기반의 임베디드 시스템을 디버깅하기 위한 USB-JTAG 인터페이스 개발 방법을 제안하고, GDB 환경에서의 USB 인터페이스 구축 방법과 디버깅 패킷을 분석하기 위한 JTAG 모듈의 개발 방법을 소개한다.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.13 no.2
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• pp.261-267
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• 2013

In this paper, the effective information transfer technique between computing device and portable device that is connected through USB interface has been studied. The proposed technique is realized by the method which portable device is perceived into optical media such as CD-ROM or CD-R/W through SCSI commands on USB interface. Through the proposed system in this study, we maximized user convenience by executing diverse works using stored data in a portable device without installing extra USB driver corresponding to portable device, when user data is transmitted between computing device and portable device. We conducted experimental tests to verify the performance of the proposed system through implementing of test system. As a result, we confirmed the technique is comparatively superior to existing method in transmitting speed and user convenience.

• Proceedings of the IEEK Conference
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• 2002.06e
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• pp.215-218
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• 2002

This paper use the USB Bulk Communication for interface of eMbedded system. But existing USB Bulk Communication have defects, it only connect point to point. And then this paper defines several command packet to improve such defects. So it improves Data Packet Layer of existing USB Bulk Communication. And then this paper make up for it's defects and implements multiplex communication Protocol in order to connect many eMbedded systems.

• Journal of the Institute of Electronics Engineers of Korea SD
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• v.43 no.10 s.352
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• pp.54-60
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• 2006

In order to test the board with IEEE 1149.1 boundary scan design, the test sequence must be applied as the bit stream However it is very tedious job to generate the test bit sequence since it requires the complete hlowledge about the 1149.1. This fuper introduces a convenient PCI/USB interface controller, named as Test-Ready PCI (TRPCI) ard Test-Ready USB (TRUSB). Test Bus Controller has been developed by TI and Lucent aiming to generate the test bit stream as an instruction level, thus even the novice test engineer can easily generate the test sequence.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.31 no.10A
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• pp.996-1002
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• 2006

USB(Universal Serial Bus) is one of the most popular communication interfaces. When USB is used in an extended range, especially configurating In-home network by connecting multiple digital devices each other, USB interface uses the bandwidth in the way of TDM (Time Division Multiplexing) so that the bottleneck of bus bandwidth can be brought. In this paper, the more effective usage of bus bandwidth to overcome this situation is introduced.

• Journal of Internet Computing and Services
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• v.18 no.1
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• pp.21-26
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• 2017

In this paper, an USB-OTG (Uiversal Serial Bus On-the-go) interface module was designed with the iris information for personal identification. The image recognition algorithm which was searching face and iris areas, was proposed with pixel differences from eye blinking after several facial images were captured and then detected without any activities like as pressing the button of smart phone. The region of pupil and iris could be fast involved with the proper iris area segmentation from the pixel value calculation of frame difference among the images which were detected with two adjacent open-eye and close-eye pictures. This proposed iris recognition could be fast processed with the proper grid size of the eye region, and designed with the frame difference between the adjacent images from the USB-OTG interface with this camera module with the restrict of searching area in face and iris location. As a result, the detection time of iris location can be reduced, and this module can be expected with eliminating the standby time of eye-open.

• 제어로봇시스템학회:학술대회논문집
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• 2005.06a
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• pp.2499-2502
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• 2005

Universal Serial Bus (USB) is one of the most popular communication interfaces. When USB is used in more extended range, especially configuring home network by connecting multiple digital devices each other, USB interface uses the bandwidth in the way of Time Division Multiplexing (TDM) so that the bottleneck of bus bandwidth can be brought under the heavy traffic. In this paper, the more effective usage of bus bandwidth to overcome this situation is introduced. Basically, in order to realize the system for transferring real-time moving picture data among digital information devices, we analyze USB transfer types and descriptors and introduce the method to enhance the detailed performance of isochronous transfer that is one of USB transfer types.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.31 no.1B
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• pp.19-25
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• 2006

It's for USB to be used more frequently than another I/O devices. The Universal Serial Bus is the most successful interface in PC history. It's already the do facto interconnect for PCs, and has proliferated into consumer electronics(CE) and mobile devices as well. USB has built on many killer applications, many CE devices, many interfaces. The tangle of wires among the number of devices in your home demands wireless technology. If our devices is unwired, it solves the tangle of wires. In this paper we want to use Legacy USB functionalities, portabilities, multimedia capabilities with wireless interconnection. This paper is related to a study of USB implementation without wires. This paper is related to make the hub function of USB cordless, so it will connect host with devices without wires. In case making USB wireless, it must support the above functionalities. Moreover, It needs the data structure and the resources for host functionalities, e.g. ETD(Endpoint Transfer Descriptor), data memory. This will benefit a convenient use of USB.