Design and Implementation of a Remote Multimedia System for the Application of Electronic Medical Records

• Main Authors: Yung-Sung Huang, 黃永松
• Other Authors: Ying-Wen Bai
• Format: Others
• Language: zh-TW
• Published: 2005
• Online Access: http://ndltd.ncl.edu.tw/handle/50138926488980080910

碩士 === 輔仁大學 === 電子工程學系 === 93 === In the past, as all hospital electronic records were text-based, we present an implemented real-time multimedia medical system that integrates a remote medical videoconference, heart sound, medical image and real-time electronic medical records via a wireless communication network. This design provides users with access to the system through wireless hand-held devices such as a Tablet PC or a PDA. Our design uses streaming with the MPEG-4 standard, plus a large amount of shortened video stream data at 1/24 sizes. Each picture or frame is compressed from 153.6 Kbytes to 6.21 Kbytes through the sharing of the wireless transmission channel by using both a real-time transport protocol (RTP) and a real-time control protocol (RTCL). In addition, our design, which also integrates the processing of the heart sound, supports a 8 kHz sampling rate and a 16-bit representation by mean of a required 2 kbps bandwidth come from a digital stethoscope. Then we use from 20 to 500 Hz’s Hamming windows with FIR bandpass filter and adaptive noise canceling algorithm for enhancement of the heart sound signal and reduction of background noise.