voice and video conferencing ppt

... of conferencing and collaboration systems has become more complex. Voice and Video Conferencing Fundamentals provides a comprehensive view of audio and video conferencing concepts, and ... Title: Voice and videoconferencing fundamentals. HF5734.7.F57 2007 006.7 dc20 2007003879 Warning and Disclaimer This book is designed to provide information about voice and video conferencing. ... topics: ■ Conference types ■ Voice and video conferencing components ■ Voice conferencing modes ■ Types of endpoints ■ Video controls: far-end camera control ■ Text overlay Components of a Conferencing System...

Ngày tải lên: 23/12/2013, 04:17

... between Cisco and any other company. (0612R) Voice and Video Enabled IPSec VPN (V 3 PN) Solution Reference Network Deisgn â 2007 Cisco Systems, Inc. All rights reserved. 4-10 Voice and Video Enabled ... DifferentiationV 3 PN provides the ability to encrypt voice and video, which is a new security feature that can be offered relative to traditional TDM networks. xi Voice and Video Enabled IPSec VPN (V 3 PN) SRND 956529 V3PN ... would be required to cause audible errors. Contents viii Voice and Video Enabled IPSec VPN (V 3 PN) SRND 956529 x Voice and Video Enabled IPSec VPN (V 3 PN) SRND 956529 V3PN Solution Reference...

Ngày tải lên: 24/01/2014, 10:20

Ngày tải lên: 22/06/2014, 22:20

Ngày tải lên: 11/07/2014, 21:20

... Macromedia Flash and Flash Video 1 Technical Overview of Video Standards 2 Video Standards—NTSC and PAL 2 Interlaced and Progressive Video 5 Introducing the Macromedia Flash MX 2004 Video Platform ... Overview of Video Standards Many people creating Flash Video projects files have a background in web design and desktop publishing, and might not have the technical understanding of video necessary ... quality for their video projects. This section explains the basic concepts and usage of video parameters and standards. If you are already familiar with these standards and the terminology,...

Ngày tải lên: 23/12/2013, 03:16

... today’s video security industry. H.263 - although this standard is considered primarily as a legacy design, this standard is a low bit-rate format originally designed for video conferencing and ... Detection, Window Blanking and more. Network Video Recording and Management – You’ve captured the video. Now what? While many manufacturers focus solely on the camera, Pelco understands that security ... powerful network video recording and management backbones to properly process, archive, record, access, and share the critical video you are capturing. Whether the enterprise-class Endura Video System,...

Ngày tải lên: 14/02/2014, 08:20

... choice and competition in the video market. The era of broadband video has arrived. Verizon is eager to de- liver it to our customers. We are also excited by the opportunities with software and ... Video and Data Services.’’ Video and data are the second and third legs of the three-legged IP-enabled stool. Recently, we examined Voice over IP, which is the other leg. And as we modernize our ... determining from whom or where to purchase voice, data, and video services. VoIP calls for a cable provider, video services through a phone company, and data services through a satellite provider...

Ngày tải lên: 18/02/2014, 00:20

... scalable video coding techniques and address their impact on the transmission of video over the Internet. A. Video Compression Standards The first international digital video coding standard is ... considered. D. Scalable Video Coding In an ideal video streaming system, the available network bandwidth is stable, the encoder optimally compresses the raw video at a given bandwidth, and the decoder is ... coding, and median motion vector prediction. Unlike MPEG-1/2, H.261/263 are designed for video telephony and only include video coding (no audio coding or systems multiplex). In addition, these standards...

Ngày tải lên: 26/02/2014, 07:20

... site loaded with sound and motion. That’s understandable: You, too, want to trick out your pages with audio and video. But before you can jazz up your site, you need to understand a few basics. Linking, ... Your Videos to YouTube”, below. You’ll also find out where you can download free multimedia files to get you started, and learn how to prepare homegrown videos for quick, seamless playback. And ... Mahler symphony. Handling this data without trying your visitors’ patience is a true test. In the following sections, you’ll learn how to prepare your video content for the Web, and consider two...

Ngày tải lên: 23/03/2014, 01:20

... processes of compressing and transmitting or storing a video source to a destination in Figure 1.1. The source of raw video may come from a video camera or from a previously stored video data. The source ... chroma components are lowpass filtered and subsampled. In digital encoding of color video, the components used are Y  , Cb, and Cr. The chroma components Cb and Cr are low- pass filtered and subsampled. This gives ... vehicles, and so in Chapter 3, we will define the unitary transforms and discuss their properties. We will then describe im- age transforms such as KLT and DCT and illustrate their merits and demerits...

Ngày tải lên: 24/03/2014, 01:21

... rate of 1 kHz with 12 bit resolution. Data in the rest time before and after video presentation (5 min each), and those during video presentation (5 min) were ana- lyzed. Heart rate (min -1 ) was ... band-pass filter with the bandwidth between 0.08 Hz and 0.12 Hz to extract Mayer wave components. At time t, Hanning win- dow whose interval is [t-60, t+60] in second is used to seg- ment BP and ... consecutive three days (day 1, day 2 and day 3) during video presentation of the movie D is shown respectively. The mean and SE of ρ max obtained in the rest before and after presentation of the movies...

Ngày tải lên: 19/06/2014, 10:20

... ranges from 40 to 80 for the mean of regional standard deviation and from 100 to 200 for the image mean. Tsai and Chou EURASIP Journal on Image and Video Processing 2011, 2011:6 http://jivp.eurasipjournals.com/content/2011/1/6 Page ... two parameters m min and m max set as (a) (m min , m max )= (100/255, 150/255), and (b) (m min , m max ) = (10/255, 250/255). Tsai and Chou EURASIP Journal on Image and Video Processing 2011, ... contrast preservation) and Sigma 16, the proposed method with a = -1 (local contrast enhancement) and (g) Sigma 4, (h) Sigma 8, (i) Sigma 16. Tsai and Chou EURASIP Journal on Image and Video Processing...

Ngày tải lên: 21/06/2014, 00:20

... Zhai, A. K. Katsaggelos, and T. N. Pappas, “Energy- efficient video summarization and transmission over a slow fading wireless channel,” in Image and Video Communications and Processing, vol. 5685 ... Cir- cuits and Systems for Video Technology, vol. 11, no. 12, pp. 1221– 1236, 2001. [26] G. M. Schuster and A. K. Katsaggelos, Rate-Distortion Based Video Compression, Optimal Video Frame Compression and Object ... infrastructure systems and the emerging convergence of voice, video, and data services have been driving various modern multimedia applications, such as video streaming and mobile TV. However,...

Ngày tải lên: 21/06/2014, 22:20

... true for TV shows, first-run movies, and recently released DVD rentals. TV, movie, and video rental rating statistics were examined, and a demand model of video titles was created by matching ... amount of Internet bandwidth. IP video is now emerging, and for broadcast quality digital video, multiple megabits of data are used per stream. Combine the two, and P2P IP video could overwhelm ... (P2P) traffic IP video traffic. High-quality IPTV or Internet TV has high-bandwidth requirements, and P2P IP video could severely strain broadband networks. A model for the popularity of video titles...

Ngày tải lên: 21/06/2014, 23:20

Ngày tải lên: 22/06/2014, 00:20

Ngày tải lên: 22/06/2014, 01:20

Ngày tải lên: 22/06/2014, 06:20

Ngày tải lên: 22/06/2014, 19:20

Ngày tải lên: 22/06/2014, 19:20

Ngày tải lên: 22/06/2014, 23:20