DIGITAL VIDEO APPLICATIONS - USER BENEFITS

Date: 2015-10-07; view: 485.

Read the text and put square brackets around the topic sentence of each paragraph.

Text B

Comprehension Check

Find the sentences in the text where these words are used and translate them.

12. Using the text explain the meaning of the followingabbreviations:

CCD – _____________________________________________________________

ATM – _____________________________________________________________

IP – _______________________________________________________________

QoS – ______________________________________________________________

PNNI – _____________________________________________________________

13. Answer the following questions in writing:

1. How can we manipulate sight and sound more easily?

2. What is the main function of Charged Coupled Device?

3. What does video compression methodologies do with video data?

4. Why have video networks became increasingly complex? What is done to change such situation?

5. Why is the most difficult task to determine the level of video quality?

6. What does latency mean in networking?

7. What are cells?

8. Why must the network supporting digital video transmission be robust enough?

14. Determine whether the following information corresponds to the text:

1. If you can share a whiteboard over the phone it will be easier to convey ideas and graphic descriptions.

2. If you use ATM-based infrastructure with an ATM core you'll be sure that audio will be transmitted without any problem.

3. Airports try to locate any suspicious activity with the help of computers.

4. With the help of digital video it becomes easier to get medical service in remote areas of the population.

Video Conferencing

Digital video makes it possible for businesses to enhance their capabilities to deliver more competitive products and services. Much of business is now conducted by phone, which is, by its nature, one dimensional and lacking in the ability to convey the subtleties of body language and other robust visual attributes such as a whiteboard¹. By having the ability to share a whiteboard over the phone makes it easier to convey ideas and graphic depictions. The solution is to combine voice/video/whiteboard so that phone-based discussions become more personal and more productive. No matter what cameras, compression techniques, and viewing devices you select, using either an ATM-based infrastructure or an IP/Ethernet edge with an ATM core will ensure that the video/audio/whiteboard will be transmitted error free even if there is other traffic on the same link.

Video Archival and Retrieval

VCR tapes are the most common vehicles for analog video archival. Typically, however, tapes must be inserted manually, which makes for a labor-intensive process. Also, VCR tapes jam periodically and have a limited shelf life. If digital video surveillance were used, your digital video would be able to travel uninterrupted from the camera source to a digital archival system, which would require little human intervention. This would be the same source that your security personal are watching. Marconi's ATM switches have the ability to efficiently make copies of data and send that data to multiple locations. This is known as multicasting. Your security personnel could be in one building while your archival system could be miles away.

Distance Learning

Distance learning is a natural use for Video Conferencing. Distance learning can be defined as any learning that takes place with the instructor and students are remote from each other in classroom environments or even to the home. Distance Learning has many benefits, including:

- School district with limited resources to hire many Foreign Language Teachers. With the proper Video setup, that one teacher can teach classes in other schools within the school district.

- Students who live in rural areas, who are not able to attend world-class universities can have high quality 2-way video with the use of ATM networking and Video Conferencing gear.

Video Surveillance

Airports and other vital facilities are under increasing scrutiny to increase their video surveillance activities to locate any suspicious activity. This has led to an increase in the number of cameras that they need to deploy, monitor and archive. Moving to a networked infrastructure, deployment of thousands of cameras is now more feasible and reliable. Video can be multicast to various locations so that an archiver can be digitally recording the same material as what is being viewed on monitors.

Video Arraignment

Large communities would like to have their police officers spend more time enforcing laws than waiting to see a judge after a criminal has been apprehended. By installing video conferencing gear, taxpayers will be able to save on the expense of transporting inmates to court is eliminated in many cases. Eliminating the possibility of escape during the transportation of inmates is one of the many benefits resulting from conducting video arraignments.

Tele Medicine

In the emerging realm of Telemedicine, digital video is making it possible to extend the best medical service to remote or underserved areas of the population. It also makes it possible to leverage the best medical expertise at multiple sites, quickly and efficiently, for collaborative and remote diagnosis, as well as evaluation of medical imagery such as X-rays² and MRI³ images.

Digital video provides an intangible "human touch" that is invaluable to cultivating and enhancing business relationships with customers, suppliers, partners and employees. Just as significantly, digital video can help business attain tangible benefits through cost savings, reduced capital expenditures, improved operational efficiencies, better communications and enhanced customer service. It is for these reasons that businesses will increasingly adopt networked digital video as a competitive asset.

Comments:

¹whiteboard – виртуальная аудиторная доска, разделяемая виртуальная аудиторная доска, виртуальная "классная" доска, виртуальная лекционная доска, разделяемый блокнот. Используемое для видеоконференцсвязи программное средство в виде графического редактора растровых изображений, в котором участники конференцсвязи пишут или рисуют (как мелом на доске).

²X-rays – рентгеновы лучи