Question 1

NTSC video is different from film in that a complete frame of video is broken up into component parts when it is created.

Accepted Answer

NTSC video is created by breaking up each frame into two interlaced fields, each containing half of the picture information. This is different from film, which captures a complete frame all at once.

Question 2

A complete NTSC frame is made up of 3 fields.

Accepted Answer

A complete NTSC frame is made up of 2 fields.

Question 3

NTSC black and white video has a frame rate of exactly 30 frames per second.

Accepted Answer

NTSC black and white video has a frame rate of exactly 30 frames per second.

Question 4

The NTSC standard was originally conceived in the late 1930's.

Accepted Answer

The NTSC standard was first developed in 1941.

Question 5

In the NTSC system, active video uses 480 lines to make up the video picture that you actually see.

Accepted Answer

This is true. NTSC uses 480 lines for active video. However, there are additional lines and fields for other information, such as sync signals, closed captioning, and vertical blanking intervals.

Question 6

The phenomenon that allows us to perceive motion in a movie is known&#10;A) ocular retainment&#10;B) retinitis pigmentosa&#10;C) vision lag&#10;D) persistence of vision

Accepted Answer

Persistence of vision is the phenomenon in which an image continues to appear in one's vision after the exposure to the original image has ended. This is what allows us to perceive motion in a movie as a series of still images are presented at a certain rate, creating the illusion of movement.

Question 7

The process of field-by-field scanning is known as scanning.&#10;A) transverse&#10;B) progressive&#10;C) interlace&#10;D) none of the above

Accepted Answer

The process of field-by-field scanning, where the image is displayed in two halves to create a full frame, is known as interlace scanning.

Question 8

The period of time during which the electron beam retraces to begin scanning&#10;A) horizontal blanking&#10;B) return&#10;C) flyback&#10;D) both B and C

Accepted Answer

The answer of The period of time during which the...

Question 9

How many lines of video are scanned in a single field of NTSC video?&#10;A) 525&#10;B) 30&#10;C) 60&#10;D) 262 1/2

Accepted Answer

In NTSC video, each frame is made up of two fields, with each field consisting of 262 1/2 lines. This means that one complete frame is composed of 525 lines, but since the question specifically asks about a single field, the correct answer is 262 1/2 lines.

Deck 3: Video Scanning