A Design of DisplayPort Link Layer
ISOCC: 2008 INTERNATIONAL SOC DESIGN CONFERENCE, VOLS 1-3
Authors: Kim, Yong-woo; Cha, Seong-bok; Kang, Jin-ku
Abstract
This paper presents an implementation of DisplayPort 1.1 Link Layer. The DisplayPort link layer provides isochronous transport service, link service, and device service. Isochronous transport service in source device maps the video and audio streams into the main link under a set of rules, so that the stream can be properly reconstructed to original format and synchronized by the sink device. The link service is used for discovering, configuring, and maintaining the link by accessing DPCD via AUX CH. The main link transmitter and receiver is implemented with 4,820 ALUTs and 4496 register, 557,110 of block memory bits synthesized using Quartus II at Altera Stratix II GX board and can be operated at 200.32MHz. Also, the AUXCH block is implemented with 765 ALUTs and 298 register, respectively.
Inactivation of Pseudomonas aeruginosa biofilm by dense phase carbon dioxide
BIOFOULING
Authors: Mun, Sungmin; Jeong, Jin-Seong; Kim, Jaeeun; Lee, Youn-Woo; Yoon, Jeyong
Abstract
Dense phase carbon dioxide (DPCD) is one of the most promising techniques available to control microorganisms as a non-thermal disinfection method. However, no study on the efficiency of biofilm disinfection using DPCD has been reported. The efficiency of DPCD in inactivating Pseudomonas aeruginosa biofilm, which is known to have high antimicrobial resistance, was thus investigated. P. aeruginosa biofilm, which was not immersed in water but was completely wet, was found to be more effectively inactivated by DPCD treatment, achieving a 6-log reduction within 7min. The inactivation efficiency increased modestly with increasing pressure and temperature. This study also reports that the water-unimmersed condition is one of the most important operating parameters in achieving efficient biofilm control by DPCD treatment. In addition, observations by confocal laser scanning microscopy revealed that DPCD treatment not only inactivated biofilm cells on the glass coupons but also caused detachment of the biofilm following weakening of its structure as a result of the DPCD treatment; this is an added benefit of DPCD treatment.