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5. Complete the following sentences:

1…which is the most advanced form of digital TV in use in the United States. 2. When analog TV shows are unconverted… 3… broadcast radio signals to individual communities. 4… this is what is being discussed -- a digital signal in the 720p. 5.The FCC gave television broadcasters a new frequency to use for their digital…6.… you can tune in to about a dozen different commercial digital TV stations… 7. Digital TV in the United States combines ... 8. ... is the most advanced form of digital TV in use in the United States. 9. ... sends a 19.39-megabit-per-second (Mbps) stream of digital data.

6. Match the first part (1-8) of the sentence with the second part (a-h):

1. Frequency is …

2. A sensor is …

3. Digital television (DTV) is …

4. A television channel is …

5. A decoder is …

6. Light or visible light is …

7. Intensity is ….

8. A tuner is ….

a) a device that measures a physical quantity and converts it into a signal which can be read by an observer or by an instrument.

b) … a physical or virtual channel over which a television station or television network is distributed.

c) … a device which does the reverse of an encoder, undoing the encoding so that the original information can be retrieved.

d) … the number of occurrences of a repeating event per unit time.

e) … the transmission of audio and video by digital signals.

f) … a measure of the energy flux, averaged over the period of the wave

g) … a circuit module or free-standing equipment which detects electrical signals and converts them to a form suitable for further processing.

h) … the portion of electromagnetic radiation that is visible to the human eye, responsible for the sense of sight.

7. Read the supplementary text, translate and entitle it:

A DTV receiver is a set-top box that permits the reception of Digital television. Its components are very similar to a desktop PC. The DTV receiver is a vital link in the chain of television system. The goal of a broadcasting system is to concentrate the hardware requirements at the source to simplify the receivers and makes it as inexpensive as possible.

It is usually connected to the TV set or incorporated in the TV set. The main features of a DTV receiver may be classified as follows:

decodes the incoming digital signal;

verifies access rights and security levels;

displays cinema quality pictures on the TV set;

outputs digital surround sound;

processes and renders Internet and interactive TV services.

8. Work in pairs. State the advantages and disadvantages of dtv and analog tv.

9. Render the text: tv goes digital.

UNIT 5

Pre-text exercises:

  1. Fill in the blanks confusing words and memorize them:

Raise, rise, remember, remind, worry, bother

1. Don’t ..., your luggage will come on afterwards by taxi… 2. If you have a question, please … your hand. 3. His secretary calls to … him about the meeting. 4. When the child released the balloon, it … 5.The farmer is… chickens and pigs. 6. Heard at major sporting events: "Please … for the National Anthem." 7. Please … to lock the door when you go out !