• 프린팅코리아
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• v.8 no.3
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• pp.112-113
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• 2009

이미 선진국에서는 보편성과 편리성에 따라 인쇄산업의 커뮤니케이션으로 자리 잡은 PDF. 그러나 우리나라는 아직 인쇄업체에서의 활용이 일반화되지 못할 실정이다. 때맞춰 여러 면에서 편리하고 트랜드로 자리잡을 인쇄산업에서의 PDF 활용 방안을 알기 쉽게 설명한 책이 나왔다. 동국대학교 지역연고진흥사업단이 인쇄혁명 'PDF 프린팅'이라는 책을 최근 발행했다. 애즈랜드 최현수 사장과 PDF 전문가 이능모씨가 공동 집필했다. 본지는 인쇄업체의 PDF 활용을 돕기 위해 본 책자의 주요 내용을 시리즈로 소개한다.

• Proceedings of the Korean Society of Computer Information Conference
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• 2012.07a
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• pp.381-384
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• 2012

2008년 국제표준 ISO 32000-1로 지정된 PDF 표준은 전자서명에 대한 표준을 함께 제공함으로써 PDF 문서의 신뢰성을 확보하고자 하였다. 하지만 ISO 32000-1에 포함된 전자서명 관련 표준은 서명에 사용된 인증서의 유효기간이 만료되면 전자서명의 유효성을 검증할 수 없기 때문에 장기적으로 보존되는 문서의 신뢰성을 보장하는데 적절하지 않다. 따라서 본 논문에서는 PDF 국제 표준인 ISO 32000-1의 전자서명 관련 표준을 분석하고 전자서명 장기검증 기능을 적용할 수 있는 방안을 제시한다. 본 논문에서 제안한 내용을 활용한다면 다양한 PDF 소프트웨어에서 호환 가능한 전자서명 장기검증 기능을 제공할 수 있을 것이며, 이를 통해 PDF 문서의 신뢰성을 향상시킬 수 있을 것이다.

• Journal of Digital Convergence
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• v.12 no.2
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• pp.285-293
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• 2014

Two-dimensional PDF417 bar code has a wide range of use and has a storage capacity to compress a large amount of data. With these characteristics, PDF417 has been used in various ways to prevent the forgery and alteration of important information in documents. On the other hand, previous decoding methods in PDF417 barcode are slow and inefficient because they simply employ the standard specifications of AIM (Association for Automatic Identification and Mobility). Therefore, this paper propose an efficient and fast algorithm of decoding PDF417 bar code. As a result, the proposed decoding algorithm will be more faster and efficient than previous methods.

• Journal of the Korean Society for Precision Engineering
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• v.25 no.4
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• pp.77-85
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• 2008

PDF is widely accepted as a standard document format and now it supports 3D contents as well. Within the engineering application areas, this new 3D feature may be used to support sharing of 3D documents and thus collaboration between engineering departments, suppliers and partners. In this paper, we describe a system that automatically generates formatted engineering documents including 3D data converted from 3D applications such as commercial 3D CAD viewer. The system consists of two major modules. One is U3D conversion module and the other is PDF conversion module. U3D conversion module extracts geometry, view data, assembly and disassembly information from 3D viewer and converts to U3D format, currently in IDTF text file format. PDF conversion module generates a PDF file and inserts U3D data, various annotation information, and scripts for custom generated operations such as assembly and disassembly in the PDF document.

• Journal of the Institute of Electronics Engineers of Korea SP
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• v.44 no.6
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• pp.111-117
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• 2007

This paper presents a novel approach to speech enhancement based on a complex Laplacian probability density function (pdf). With a use of goodness-of-fit (GOF) test we show that the complex Laplacian pdf is more suitable to describe the conventional Gaussian pdf. The likelihood ratio (LR) is applied to derive the speech absence probability in the speech enhancement algorithm. The performance of the proposed algorithm is evaluated by the objective test and yields better results compared with the conventional Gaussian pdf-based scheme.

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2015.11a
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• pp.47-50
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• 2015

PDF는 미국 어도비 시스템즈(Adobe Systems) 사에서 만든 전자 문서 파일 포맷이다. PDF에는 일반 문서 및 문자, 도형 그림, 글꼴 등을 포함할 수 있으며, 동일한 문서를 컴퓨터 운영체제와 관계없이 모니터, 프린터 등의 출력 장치로 같은 모습으로 출력하기 위한 목적으로 개발되었다. 현재 거의 모든 운영체제에서 PDF 문서를 읽거나 인쇄할 수 있으며, 온라인 및 오프라인 환경에서도 쉽게 PDF 문서를 공유할 수 있으며, 보안성이 높아 공공기관, 연구소 등에서 자료를 배포할 때 많이 사용되고 있다. XML은 사람이 쉽게 읽을 수 있고 컴퓨터와 같은 기계가 쉽게 판독할 수 있는 형식으로 부호화된 문서를 작성하기 위한 일련의 규칙을 정의하는 데 사용하는 마크업 언어로서 W3C에서 정의하였다. 현재 XML은 인터넷 상에서 데이터를 표현 하거나 교환, 저장, 검색할 때 가장 널리 쓰이고 있다. 본 논문에서는 PDF 문서를 인터넷 상에서 쉽게 활용하도록 도와주며, XML 데이터 처리가 가능한 응용 프로그램에서 PDF 문서를 활용할 때 쉽게 사용할 수 있도록 도와주는 PDF-to-XML 변환 소프트웨어를 구현하였다.

• Proceedings of the Korean Printing Society Conference
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• 2001.06a
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• pp.63-77
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• 2001

PDF(Portable Document Format) is a file format that Adobe advances postscritp technique and use in managing document information or electric publishing(internet, CD-ROM, DVD). PDF is a devised document type for being able to read and print anywhere, independent of OS, printer type, resolution, and the kind of computer etc. Because this includes a compressing function, it transfers document through a small size of file in internet or intranet. In addition, that is a file format has various advantages-sharing of information and transfering documents in on line or off line environment. In this paper, we developed electronic document system using PDF format. Electronic document system consists of filter, automatic indexing, special searching system and web server. The information used in this paper is database made using Zwon\`s DocuCom. The filter recognizes various kinds of document structure. And according to property of document, it produces ASCII output. In addition to processing various formats of document, the filter can extract keywords in documents of MS WORD, Excel, Powerpoint, PDF, CAD etc. This filter uses the structure of window printer drive and can extract the information for text, page, font type and size from relevant document. The automatic indexing recognizes the formatted tag of document form ASCII text produced by filter and extracts adequate keyword to structure and property of document. PDF electronic document systems proposed in this paper can be used in Internet, PC communication. Users can choose and read electronic documents by two ways. First, users can choose and read relevant books using PDF electronic document homepage. Second, users can use PDF integrated-search system. User can search after inputing keyword and choose reference field and type of data. But, now, PDF products of Adobe can\`t support the Korean character. If this problem is resolved, we thick that PDF applications system looks active. Although there is limited function in case of using Zwon DocuCom used in this study, we think that there isn\`t a great deal of difficulty in electronic document and building digital database.

• 프린팅코리아
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• v.7 no.12
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• pp.64-65
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• 2008

(주)애즈랜드(대표이사 최현수)가 주최하고 동국대학교 RIS사업단이 주관한 출판기념회 및 세미나가 지난 11월 5일 서울 중구 PJ호텔에서 개최됐다. '인쇄혁명, PDF 프린팅'이 라는 제목의 출판기념회는 최현수 사장과 PDF 전문가 이능모 씨가 공동 저술했다. 동국 대학교 RIS사업단의 사업 일환으로 발간된 이 책자는 최근 인쇄업계의 화두로 떠오른 인쇄산업에서의 PDF 활용 방안에 대해 자세히 설명하고 있다.

• Journal of Korean Society of Industrial and Systems Engineering
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• v.28 no.2
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• pp.109-116
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• 2005

In the previous C/S publishing system, the editor or contributor can arbitrarily modify the document created by the author, in which case it is difficult to identify the changes made in the document. Another shortcoming is in that when the document is in need of tracking or editing, the client must have the respective editing system. To solve this problem, the gist of the document must be preserved along with the document itself, and the process of handling the document must be standardized. Publishing on the web ensures a more stable and accurate result in processing documents. The significance of web publishing is made clear, when we consider the importance of information per se and the growing demand for immediate publication in the present day. The need for a simple and straightforward apache-based PDF publishing system, in which HTML and CSS are supported, and a converting engine provides PDF standard security application support, is prominent. This provides a library in which one can directly create a PDF via Windows, Linux, or Unix without having to rely on a client, allowing high-speed PDF creation. The development of a web-accessed PDF converting engine forms the basis for e-transactions, online brochures, electronic B/L, and many other industrial sectors.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2011.05a
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• pp.233-235
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• 2011

Because of various style-sheet and Korean-Fonts, converting from WYSIWYG types of HTML data to forms of PDF has many limitations. In print-work areas, for printing specific fonts, it has to use CMYK colors instead of RGB colors. This paper describes about the process to make web font to printing PDF files, which is high resolution image captured document based on HTML, by using COM component feature of hardware.