QR 코드 기초
Core concepts every QR code user should understand — from basic structure and versions to encoding modes, error correction, and how scanners decode symbols.
QR Code란 무엇인가: 완벽한 입문 가이드
The definitive beginner guide to QR codes — history, structure, how they work, and why they matter in 2026.
QR Code 구조 해부: 모든 구성요소 설명
Detailed breakdown of QR code components: finder patterns, timing patterns, alignment markers, data regions, and format information.
QR Code 버전 1-40: 크기, 용량 및 선택
Complete reference for all 40 QR code versions — module counts, data capacity per EC level, and how to choose …
인코딩 모드: 숫자, 영숫자, 바이트, 한자, ECI
How QR codes encode data: five modes with different character sets and efficiency. When to use each mode and mixed-mode …
오류 수정 레벨 L, M, Q, H: 선택 방법
Understanding error correction levels and their trade-offs. When to use L (7%), M (15%), Q (25%), or H (30%) recovery.
QR Code 스캔 작동 원리: 카메라부터 데이터까지
The complete decoding pipeline: image capture, binarisation, finder detection, format reading, unmasking, error correction, and data extraction.
정적 vs 동적 QR Codes: 장단점과 활용 시점
Compare static and dynamic QR codes: functionality, cost, analytics, flexibility, and which type fits your needs.
QR Code 데이터 용량: 버전과 모드별 최대 문자 수
Complete capacity tables for all 40 versions across all EC levels and encoding modes. How to calculate the required version …
QR Code vs 바코드: 2D가 승리한 이유
How QR codes surpassed traditional 1D barcodes: capacity, speed, error correction, and versatility comparison.
마스크 패턴: 모든 QR Code에 숨겨진 최적화
The eight mask patterns, penalty scoring, and how the encoder selects the optimal mask for readability.
파인더 패턴: QR Codes에 세 개의 사각형이 있는 이유
The 1:1:3:1:1 ratio, detection algorithm, and why three squares in specific corners enable instant orientation from any angle.
QR Codes의 Reed-Solomon 오류 정정
How Reed-Solomon codes work in QR codes: Galois field arithmetic, generator polynomials, and codeword interleaving.
Micro QR과 rMQR: 표준 QR의 소형 대안
When standard QR codes are too large: Micro QR (M1-M4) and Rectangular Micro QR (rMQR) variants for space-constrained applications.
QR Code 표준: ISO 18004 및 그 이상
International standards governing QR codes: ISO/IEC 18004, JIS X 0510, GS1 Digital Link, EMV QR, and industry-specific specs.
QR Codes의 역사: 도요타에서 글로벌 표준으로
QR code history from 1994 invention at DENSO WAVE through ISO standardisation, smartphone adoption, and COVID-era boom.