• 한국정보디스플레이학회:학술대회논문집
• /
• 2008.10a
• /
• pp.13-16
• /
• 2008

Mobile phones are evolving into a platform for internet access. In order to display web pages in handsets, WVGA and around 3-inch displays are strongly recommended. Low power consumption, compactness and narrow boarder area are essential. The general requirements for WVGA solution and the design factors to reduce the power consumption and boarder area discussed.

• Journal of Information Display
• /
• v.6 no.1
• /
• pp.22-27
• /
• 2005

Auxiliary address pulse driving scheme is proposed for controlling and improving the color temperature of the 42-inch WVGA ac-plasma display panel (ac-PDP) without sacrificing total luminance. Under a white-background, the color temperature of 42-inch ac-PDP is improved by about 1,700 K, whereas under a black-background, the color temperature of 42-inch ac-PDP is improved by about 3,200 K. In addition, by properly controlling the luminance in the R, G, and B cells, the color temperature of 42-inch ac-PDP can be raised from 5,827K to 10,705K.

• 한국정보디스플레이학회:학술대회논문집
• /
• 2003.07a
• /
• pp.329-332
• /
• 2003

The effects of an auxiliary address pulse driving scheme, in which an auxiliary short pulse was applied to the address electrode during a sustain-period, was examined under the various image patterns of the 42-inch WVGA ac-PDP. When the auxiliary address pulse driving scheme was applied, the luminance of the red, green and blue cells were measured respectively. The luminance, luminous efficiency and current were measured under the full-white pattern of the 42-inch ac-PDP. As a result, the luminance of blue cell was improved approximately by 17 %, whereas the luminous efficiency of the full-white pattern was improved approximately by 34 % without a misfiring discharge in comparison with conventional driving scheme.

• Journal of Information Display
• /
• v.5 no.1
• /
• pp.16-21
• /
• 2004

The effects of an auxiliary address pulse driving scheme, in which an auxiliary short pulse is applied to the address electrode during a sustain-period, were examined under the various image patterns of the 42-inch WVGA ac-PDP. When the auxiliary address pulse driving scheme was applied, the luminance of the red, green and blue cells were measured respectively. And the luminance, luminous efficiency, and current were measured under the full-white pattern of the 42-inch ac-PDP. As a result, the luminance of blue cells was improved approximately by 17 %, whereas the luminous efficiency of the full-white pattern was improved approximately by 34 % without a misfiring discharge in comparison with conventional driving scheme.

• 한국정보디스플레이학회:학술대회논문집
• /
• 2009.10a
• /
• pp.364-366
• /
• 2009

We successfully fabricated flexible electronic paper display (EPD) by using toner particles on plastic (PC) substrate. It has high resolution (WVGA : 800 ${\times}$ 480) and 7 inch diagonal viewable image size. The response time was about 0.25 msec at 90 V, a contrast ratio of about 2, a driving voltage of 60 V which we successfully demonstrated to display several images at.

• 한국정보디스플레이학회:학술대회논문집
• /
• 2009.10a
• /
• pp.478-480
• /
• 2009

This experiment implemented a laser projection system that used the 2D MEMS scanner as the driving method for the display device. The 2D MEMS scanner, which can scan the images horizontally and vertically, was applied to drive the projection system using the interlaced scanning method. The laser was directly modulated to implement the grayscale and the images were WVGA resolution quality.

• 한국정보디스플레이학회:학술대회논문집
• /
• 2003.07a
• /
• pp.7-10
• /
• 2003

Samsung SDI has developed a full color 5.0" WVGA AMOLED display with top emission and a super fine pitch of 0.1365mm(l86ppi), the world's highest resolution OLED display ever reported to date. Scan driver circuits and demux circuit were integrated into the display panel, using low temperature poly-Si TFT CMOS technology, and data driver circuit were mounted using COG chips. Peak luminescence was greater than 300cd/ $m^2$ with power consumption of 500mW with 30% of the pixels on illuminated.

• Journal of Broadcast Engineering
• /
• v.24 no.6
• /
• pp.1134-1142
• /
• 2019

Detection of double compression is one of the most efficient ways of remarking the validity of videos. Many methods have been introduced to detect HEVC double compression with different coding parameters. However, HEVC double compression detection under the same coding environments is still a challenging task in video forensic. In this paper, we introduce a novel method based on the frame partitioning information in intra prediction mode for detecting double compression in with the same coding environments. We propose to extract statistical feature and Deep Convolution Neural Network (DCNN) feature from the difference of partitioning picture including Coding Unit (CU) and Transform Unit (TU) information. Finally, a softmax layer is integrated to perform the classification of the videos into single and double compression by combing the statistical and the DCNN features. Experimental results show the effectiveness of the statistical and the DCNN features with an average accuracy of 87.5% for WVGA and 84.1% for HD dataset.

• 한국HCI학회:학술대회논문집
• /
• 2009.02a
• /
• pp.1015-1019
• /
• 2009

무선인터넷 기술발달로 대용량의 웹사이트를 휴대전화에 전송하는 것이 가능해지고 디스플레이도 3 인치 이상의 WVGA 고해상도 제품이 출시되고 있으며 망개방 이라는 시대적 요구와 맞물리면서 모바일 풀브라우저가 주목 받고 있다. 그러나, 유선 인터넷 환경의 웹사이트를 좁은 휴대전화 화면에 그대로 구현하여 사용하기란 쉽지 않다. 따라서, 본 연구는 모바일 풀브라우저의 현황을 살펴보고 사용성 검증을 통해 현재 서비스 환경에 최적화된 모바일 풀브라우저 UI 제안을 목적으로 한다. 이를 위해 국내외 주요 이동통신사의 풀브라우저에 적용된 공통적인 기본 UI 요소를 검토하여 추출하였다. 그 후 사용자 조사를 통해 추출된 기본 UI 요소들을 비교해 보고 각 기능의 중요도 및 기능 별 최적안을 도출하였다. 마지막으로 사용자 조사를 통해 검증된 이슈를 기반으로 향후 모바일 풀브라우저 인터페이스를 제안한다. 본 연구는 여러 모바일 풀브라우저의 기능별 방식에 대하여 사용자의 실제 경험을 통해 검증함으로써 향후 모바일 풀브라우저 개발에 있어 사용성을 향상 시키는 자료로 활용 될 수 있을 것이다.

• 한국정보디스플레이학회:학술대회논문집
• /
• 2006.08a
• /
• pp.18-20
• /
• 2006

The panels were fabricated to characterize the contamination of Magnesium Oxide (MgO) thin films by phosphors and ion bombardments in AC-PDPs. Forty-six inch WVGA panels of the surface and vertical discharge type were manufactured. The experiment was designed to investigate the relationship between the MgO thin films and phosphor contamination caused by ion bombardments in a plasma environment to produce a life time test. The contamination of MgO thin films by phosphors was investigated by way of X-ray photoelectron spectroscopy (XPS).