Song I-Yeong (宋以頴, 1619 ~ 1692), who was an astronomy professor of Gwansanggam (觀象監, Bureau of Astronomy), created the Honcheonsigye (渾天時計, Armillary Clock) in 1669 (10th year of King Hyeonjong Era). Honcheonsigye was a unique astronomical clock which combined an armillary sphere, the traditional astronomical instrument of the Far East, with the power mechanism of western alarm clock. The clock part of this armillary clock is composed of two major parts which are the going-train, power unit used the weight, and the time signal system in a wooden case. The time signal system is composed of four parts which are the time-annunciator, the striking train, the 12 different time-announcing medallions and the sound bell. This clock has been neglected for many years and its several components have been lost. This study is to understand the structure of time signal system and suggests the restoration process.

ABSTRACT
1. 서론
2. 송이영 혼천시계의 시보시스템
    2.1. 혼천시계의 구성과 동력발생
    2.2. 시보시스템
3. 구슬신호 체계의 혁신적
    3.1. 물시계의 구슬 운영 시스템
    3.2. 구슬신호 체계의 혁신적 변환
    3.3. 이민철 혼천시계의 구슬신호 체계
4. 결론과 고찰
참고 문헌

• 김상혁(한국천문연구원) | SANG HYUK KIM (Korea Astronomy and Space Science Institute)
• 이용삼(충북대학교) | YONG SAM LEE (Chungbuk National University)