11.2: Optimization of Delta Color Array for High-Definition PDP with High-Efficient Hexagonal Array Structure

2003 ◽  
Vol 34 (1) ◽  
pp. 140 ◽  
Author(s):  
Cha Keun Yoon ◽  
Jung Keun Ahn ◽  
Yong Jun Kim ◽  
Sung Hun Yoo ◽  
Byung Hak Lee ◽  
...  
Keyword(s):  
Hexagonal Array ◽  
High Definition ◽  
High Efficient ◽  
Array Structure

scholarly journals High Gain and High Efficient Stacked Antenna Array with Integrated Horn for 60 GHz Communication Systems

2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
Hamsakutty Vettikalladi ◽  
Waleed Tariq Sethi ◽  
Majeed A. Alkanhal
Keyword(s):  
Communication Systems ◽  
High Gain ◽  
Center Frequency ◽  
Impedance Bandwidth ◽  
Antenna Element ◽  
60 Ghz ◽  
Antenna Structure ◽  
High Efficient ◽  
Feed Network ◽  
Array Structure

In order to achieve wide bandwidth and high gain, we propose a stacked antenna structure having a microstrip aperture coupled feeding technique with a mounted Horn integrated on it. With optimized parameters, the single antenna element at a center frequency of 60 GHz, exhibits a wide impedance bandwidth of about 10.58% (58.9–65.25 GHz) with a gain and efficiency of 11.78 dB and 88%, respectively. For improving the gain, we designed a 2 × 2 and 4 × 4 arrays with a corporate feed network. The side lobe levels were minimized and the back radiations were reduced by making use of a reflector atλ/4distance from the corporate feed network. The2×2array structure resulted in improved gain of 15.3 dB with efficiency of 83%, while the4×4array structure provided further gain improvement of 18.07 dB with 68.3% efficiency. The proposed design is modelled in CST Microwave Studio. The results are verified using HFSS, which are found to be in good agreement.

Development of performance- and cost-oriented HD PDP TV with high picture quality using a high-efficiency hexagonal array structure

2004 ◽  
Vol 12 (3) ◽  
pp. 251 ◽  
Author(s):  
Min-Sun Yoo ◽  
Jeong-Nam Kim ◽  
Dong-Ju Woo ◽  
Sang-Hoon Yim ◽  
Yoon-Hyoung Cho
Keyword(s):  
High Efficiency ◽  
Picture Quality ◽  
Hexagonal Array ◽  
Array Structure

Broadband Absorptance High Efficiency Silicon Nanowire Fractal Arrays for Photovoltaic Applications

2014 ◽  
Vol 1707 ◽  
Author(s):  
Omar H. Alzoubi ◽  
Husam Abu-Safe ◽  
Khalid Alshurman ◽  
Hameed A. Naseem
Keyword(s):  
High Efficiency ◽  
Crystalline Silicon ◽  
Light Trapping ◽  
Silicon Nanowire ◽  
Nanowire Array ◽  
Normal Incidence ◽  
Hexagonal Array ◽  
Equivalent Thickness ◽  
Array Structure ◽  
Photovoltaic Solar Cells

ABSTRACTNanowire arrays have been proposed to enhance light trapping, increase efficiencies, and reduced material cost in photovoltaic solar cells. In this work we present a new crystalline silicon nanowire array structure, inspired by fractal geometry. The array structure is assumed to be an infinite 2D array in the x and y directions, and composed of vertically aligned SiNW suspended in air. Hexagonal fractal-like geometry is adapted in arranging cylindrical SiNW in these arrays. Full-wave finite element method 3D simulation is used to compute reflectance, transmittance and absorptance of the array for a normal incidence plane wave. The proposed fractal-like distribution of SiNW arrays yield broad absorption spectrum and enhanced efficiency while using less material. The efficiency of the proposed fractal-like SiNW arrays achieve ∼100% enhancement over that of the equivalent thickness flat c-Si film, and ∼18% enhancement over an equivalent height hexagonal array. The proposed optimized structures achieved a filling ratio ∼25%, which is ∼33% less than the corresponding hexagonal array.

HEXAGONAL ARRAY STRUCTURE FOR 2D NDE APPLICATIONS

2010 ◽  
Author(s):  
J. Dziewierz ◽  
S. N. Ramadas ◽  
A. Gachagan ◽  
R. L. O’Leary ◽  
Donald O. Thompson ◽  
...  
Keyword(s):  
Hexagonal Array ◽  
Array Structure

A Fast Intra Mode Selection Algorithm Based on CU Size for Virtual Reality 360∘ Video

2019 ◽  
Vol 34 (01) ◽  
pp. 2055001
Author(s):  
Xiaohan Guan ◽  
Cai Xu ◽  
Mengmeng Zhang ◽  
Zhi Liu ◽  
Wen Yue ◽  
...  
Keyword(s):  
Virtual Reality ◽  
Rate Increase ◽  
Mode Selection ◽  
Selection Strategy ◽  
Selection Algorithm ◽  
High Definition ◽  
High Efficient ◽  
The Cost ◽  
Coding Unit ◽  
Efficient Video

Virtual Reality (VR) 360∘ video is spherical, and has ultra-high definition. It is time-consuming to code it using High Efficient Video Coding (HEVC) directly. In this paper, a fast intra mode selection algorithm based on Coding Unit (CU) size is proposed for VR 360∘ video in Cubemap projection (CMP) format. A redefined mode selection strategy for two-stage Rough mode decision (RMD) is designed based on different depth CUs to reduce coding time during intra prediction process. The experimental results show that the proposed algorithm brings 27.70% saving in average coding time at the cost of only 0.8% Bjontegaard delta rate increase in All-Intra mode.

P-160: Viewing Angle Controllable LCD with Specified Array Structure for Ultra High Definition Display

2018 ◽  
Vol 49 (1) ◽  
pp. 1765-1768 ◽  
Author(s):  
Linlin Wang ◽  
Limei Jiang ◽  
Zifang Su ◽  
Yanbin Qiao ◽  
Peter Liao ◽  
...  
Keyword(s):  
Viewing Angle ◽  
High Definition ◽  
Array Structure

Routine Digital Processing of Microscope Images

1990 ◽  
Vol 48 (1) ◽  
pp. 550-551
Author(s):  
E. Wisse ◽  
A. Geerts ◽  
R.B. De Zanger
Keyword(s):  
Operating System ◽  
Digital Processing ◽  
Hard Disks ◽  
The Sun ◽  
Tape Drive ◽  
High Definition ◽  
Fluorescent Microscope ◽  
Microscope Images ◽  
Helical Scan ◽  
Ethernet Connection

The slowscan and TV signal of the Philips SEM 505 and the signal of a TV camera attached to a Leitz fluorescent microscope, were digitized by the data acquisition processor of a Masscomp 5520S computer, which is based on a 16.7 MHz 68020 CPU with 10 Mb RAM memory, a graphics processor with two frame buffers for images with 8 bit / 256 grey values, a high definition (HD) monitor (910 × 1150), two hard disks (70 and 663 Mb) and a 60 Mb tape drive. The system is equipped with Imaging Technology video digitizing boards: analog I/O, an ALU, and two memory mapped frame buffers for TV images of the IP 512 series. The Masscomp computer has an ethernet connection to other computers, such as a Vax PDP 11/785, and a Sun 368i with a 327 Mb hard disk and a SCSI interface to an Exabyte 2.3 Gb helical scan tape drive. The operating system for these computers is based on different versions of Unix, such as RTU 4.1 (including NFS) on the acquisition computer, bsd 4.3 for the Vax, and Sun OS 4.0.1 for the Sun (with NFS).

Enhancing Clinical Supervision Using High-Definition Real-Time Digital Recording, Annotation, and Bluetooth Technology

2019 ◽  
Vol 4 (2) ◽  
pp. 356-362
Author(s):  
Jennifer W. Means ◽  
Casey McCaffrey
Keyword(s):  
Graduate Students ◽  
Data Collection ◽  
Real Time ◽  
Clinical Supervision ◽  
Video Recording ◽  
Advanced Technology ◽  
High Definition ◽  
Recording Technology ◽  
Self Confidence ◽  
Additional Data Collection

Purpose The use of real-time recording technology for clinical instruction allows student clinicians to more easily collect data, self-reflect, and move toward independence as supervisors continue to provide continuation of supportive methods. This article discusses how the use of high-definition real-time recording, Bluetooth technology, and embedded annotation may enhance the supervisory process. It also reports results of graduate students' perception of the benefits and satisfaction with the types of technology used. Method Survey data were collected from graduate students about their use and perceived benefits of advanced technology to support supervision during their 1st clinical experience. Results Survey results indicate that students found the use of their video recordings useful for self-evaluation, data collection, and therapy preparation. The students also perceived an increase in self-confidence through the use of the Bluetooth headsets as their supervisors could provide guidance and encouragement without interrupting the flow of their therapy sessions by entering the room to redirect them. Conclusions The use of video recording technology can provide opportunities for students to review: videos of prospective clients they will be treating, their treatment videos for self-assessment purposes, and for additional data collection. Bluetooth technology provides immediate communication between the clinical educator and the student. Students reported that the result of that communication can improve their self-confidence, perceived performance, and subsequent shift toward independence.

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