• The Journal of the Korea institute of electronic communication sciences
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• v.6 no.5
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• pp.657-664
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• 2011

This paper proposes the revised ASCII code. The study started with consideration whether the ASCII code is proper or not in the side of the transmission efficiency in data communications. In data communications, when the consecutive "0" bits from the information devices input into the line coder, its consecutive "0" bits are scrambled to the predetermined patterns not to the consecutive "0" signal. The paper used to study with the statistical data for the frequency of the letters of the alphabets and the proposed rule of characters coding in reference. As a result of the study, when the proposed ASCII code is applied, the operation efficiency of the scrambler in the line coder is improved upto average 30%.

• Journal of the Korean Institute of Telematics and Electronics C
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• v.36C no.12
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• pp.1-10
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• 1999

Given a domain, client applications over the Internet are in support of the DNS (Domain Name System) to get its corresponding IP address. Currently, only domain names expressed by ASCII code are recognized over the Internet. This enforces the usage of ASCII domain names even in countries which use languages based on multilingual code other than ASCII code. In this paper, we present a methodology to support multilingual domain names on top of the existing DNS. The methodology is based on code translation of domain names in multilingual code into ASCII code via UTF5. We implement a gateway, called Proxy Hangul DNS (P-HDNS) based on the proposed methodology. This paper presents the principles of the methodology and the implementation details of P-HDNS.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2017.10a
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• pp.457-461
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• 2017

Barcode is widely being used in many places such as supermarket, cafeteria, library, etc. ISBN, Code 128, Code 39 are mainly used in barcode. Among them, Code 128 which is based on ASCII Code can transfer control letters that range from ASCII Code 0 to ASCII 32. Control letters intrinsically imply letters that are used to deliver information to peripheral devices such as a printer or communication joint, however, they play quite different roles if they are inputted on Windows. Generally, barcode devices doesn't verify input data, thus it enables people to tag any barcode that has specific control letters and execute the commands. Besides, most barcode recognition programs are using a database and they have more security weakness compared to other programs. On the basis of those reasons, I give an opinion that SQL Injection can attack barcode recognition programs through this study.

• Journal of the Korea Society of Computer and Information
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• v.25 no.6
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• pp.1-8
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• 2020

Communication between system modules is applied using the Modbus protocol in industrial sites including smart factories, industrial drones, building energy management systems, PLCs, ships, trains, and airplanes. The existing Modbus was used for serial communication, but the recent Modbus protocol is used for TCP/IP communication.The Modbus protocol supports RTU, TCP and ASCII, and implements and uses protocols in embedded systems. However, the transmission I/O devices for RTU, TCP, and ASCII-based protocols may differ. For example, RTU and ASCII communications transmit on a serial-based communication protocol, but in some cases, Ethernet TCP/IP transmission is required. In particular, since the C language (object-oriented) is used in embedded systems, the complexity of source code related to I/O registers increases. In this study, we designed software that can logically separate I/O functions from embedded devices, and designed the execution logic of each instance requiring I/O processing through a delegate class instance with Modbus RTU, TCP, and ASCII protocol generation. We designed and experimented with software that can separate communication I/O processing and logical execution logic for each instance.

• The Journal of the Korea institute of electronic communication sciences
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• v.6 no.4
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• pp.499-504
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• 2011

This paper propose the rule of coding for the characters and symbol, etc which are used in computer, information devices, etc. When they use the rule of coding, they may improve the efficiency of transmission in data communications by reducing the number of scrambling during the line coding in the coder in the transmitter. The paper considered the codes of one byte of 3bits column ${\times}$ 4bits rows. ASCII code is one of the representative code for the codes of one byte of 3bits column ${\times}$ 4bits rows. Therefore, this paper applied ASCII code to study the coding rule of the characters and symbols, etc.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2017.05a
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• pp.741-743
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• 2017

The visible light communication is a communication method of outputting binary data based on the illumination threshold value at the light receiving diode of the receiving unit, when the LED of the transmitting unit transmits light. However, separate receiver is necessary to receive the optical signal, there is a problem that a device not equipped with such a receiver can not utilize visible light communication. To solve this problem, this paper proposes a portable visible light receiver applicable to devices using USB OTG. Implemented portable visible light receiver converts the binary data received from the LED into a character string of ASCII code and transmits it to another device. Through data transmission experiments using smart phone confirmed that it is possible to transmit ASCII codes in the proposed method.

• MALSORI
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• no.19_20
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• pp.29-32
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• 1990

The Arae Hangul wordprocessor is one of the most famous software in Korea. It is very useful to linguists In that it has various systems of foreign characters and enables us to edit enough new ones freely. It has already a broad system of the IPA, which cannot be used for narrow transcription. The writer proposes here a full system of the IPA revised to 1979, which you can get from the Phonetic Society of Korea or Hangul & Computer Co., Ltd., free of charge. To use the new system of the IPA in the Arae Hangul wordprocessor, you must replace six revised files: (1) SPECIAL2.SFT, (2) SPECIAL2.PFT, (3)SPECIAL2.PFT, (4)ASCII.SFT, (5)ASCII.PFT, (6)ASCII.LFT.

• Proceedings of the Korea Information Processing Society Conference
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• 2018.05a
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• pp.169-171
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• 2018

정보를 조작하고 은닉하는 기술은 꾸준히 발전하고 있으며 그 가짓수가 매우 다양하다. 이러한 기술들이 성장함에 따라 이에 맞서 조작된 정보를 알아채고 예방 및 방어를 하는 보안 기술들이 함께 진보된다. 본 논문에서는 정보 보안 기술의 발전을 위한 새로운 정보 은닉 기술의 필요성을 근거로 다양한 데이터 표현 방법을 보안 관점에서 이해하고자 한다. 이에 디지털 이미지를 저장하는 데 쓰이는 BMP 파일 포맷 구성이 RGB 3채널임을 이용하여 ASCII 코드값을 채널에 주입해 프로그래밍을 구현하는 기법에 대해 연구하였다. 이 기법은 향후 여러 프로그래밍 언어로 확장됨에 따라 멀티미디어를 활용한 정보보안 분야에서 크게 활용될 것으로 기대하는 바이다.

• Korean Journal of Remote Sensing
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• v.21 no.5
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• pp.433-443
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• 2005

This paper show that, without installation of expensive VR (Virtual Reality) program, the sharing information is possible through posting three-dimensional road structures on the web, and avoiding the conventional top-down decision making method, fast bottom-up communication is possible base on the Virtual GIS (Geographic Information System). In this paper, using Viewpoint Scene Builder, internet-based software, the transformation was conducted to give pertinent type for web posting. In order to use the completed route at the scene builder, the output with ASCII Export is required, and ASE (ASCII Scene Export) contains the property information including the coordinate and frame of mesh vertex. Through in advance recognition of the problems regarding route design and petition due to environmental rights infringement, the time and cost due to design alteration can be reduced. It's difficult to provide VR based on the internet because file that embodied with internet GIS was complicated and its capacity comes to scores of mega-bites. But, this study provides VR with internet according to a basis by simplification of files.

• The Journal of Korea Institute of Information, Electronics, and Communication Technology
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• v.11 no.4
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• pp.319-324
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• 2018

In this paper, we designed and implemented a code conversion method between ISO/IEC 10646 and the multi-byte code set. The Universal Multiple-Octet Coded Character Set(UCS) provides codes for more than 65,000 characters, huge increase over ASCII's code capacity of 128 characters. It is applicable to the representation, transmission, interchange, processing, storage, input and presentation of the written form of the language throughout the world. Therefore, it is so important to guide on code conversion methods to their customers during customer systems are migrated to the environment which the UCS code system is used and/or the current code systems, i.e., ASCII PC code and EBCDIC host code, are used with the UCS together. Code conversion utility including the mapping table between the UCS and IBM new host code is shown for the purpose of the explanation of code conversion algorithm and its implementation in the system. The programs are successfully executed in the real system environments and so can be delivered to the customer during its migration stage from the UCS to the current IBM code system and vice versa.