Question 1

The process of encoding condenses or compresses video information.

Accepted Answer

Encoding is the process of compressing video information to reduce the file size without affecting the quality too much.

Question 2

There are five ways to encode or process video signals in both the analog and digital domains.

Accepted Answer

There are multiple ways to encode or process video signals in both the analog and digital domains, but they are not limited to just five. The methods vary widely depending on the technology, standards, and specific applications involved.

Question 3

In the analog component system, the luminance and chrominance information are processed separately.

Accepted Answer

In the analog component system, the luminance (brightness) and chrominance (color) information are separated into different components to be processed independently. This is known as the YPbPr or YCbCr color space, where Y represents the luminance component and Pb/Cb and Pr/Cr represent the blue and red color difference components, respectively.

Question 4

The inputs and outputs from digital cameras and recoding devices can either be RGB or YCbCr components.

Accepted Answer

This statement is true. Digital cameras and recording devices can output their video signals in either RGB or YCbCr components, depending on the settings and capabilities of the device. RGB represents the red, green, and blue color channels, while YCbCr represents the brightness (Y) and color difference (Cb and Cr) information. Both formats have their advantages and are commonly used in different contexts, such as RGB being used for computer graphics and YCbCr being used in digital television and video broadcasting.

Question 5

Although the color signals are separate, in the digital world they can be combined on a single cable along with audio.

Accepted Answer

This is true. In digital technologies like HDMI and DisplayPort, the color signals (red, green, and blue) can be combined on a single cable along with audio.

Question 6

The analog composite signal is made up of which component elements?&#10;A) luminance&#10;B) color difference signals&#10;C) synchronizing information&#10;D) all of the above

Accepted Answer

An analog composite signal is made up of luminance, color difference signals, and synchronizing information.

Question 7

The process of translating one type of encoded video signal to another type of&#10;A) decoding&#10;B) transcoding&#10;C) translating&#10;D) none of the above

Accepted Answer

Transcoding is the process of converting a video signal from one encoded format to another. Decoding is the process of converting an encoded signal into a usable format, but it does not necessarily involve changing to a different format. Translating is a more general term that can refer to any type of language or data conversion, but it is not specific to video signals. Therefore, B is the best choice for this question.

Question 8

The method of encoding color information on to a black and white video signal is based on which mathematical formula?&#10;A) Ohm's law&#10;B) Inverse square law&#10;C) Pythagorean theorem&#10;D) Thevenin's equivalent

Accepted Answer

The method of encoding color information onto a black and white video signal, such as in the NTSC system, uses the concept of quadrature amplitude modulation, which can be understood through the principles of the Pythagorean theorem. This theorem helps in separating the color information from the black and white signal by treating them as perpendicular components, akin to the sides of a right-angled triangle.

Question 9

If you wanted a digital component signal, you would obtain it from which set of outputs?&#10;A) RGBY&#10;B) Y, Pb, Pr&#10;C) Y, Cb, Cr&#10;D) both A & C

Accepted Answer

Y, Cb, Cr outputs are used for digital component signals, while RGBY outputs are used for analog component signals. Therefore, Option C is the correct answer. Option A is incorrect because RGBY outputs are analog, not digital. Option B is incorrect because Y, Pb, Pr outputs are used for analog component signals, not digital.

Question 10

If you wanted an analog component signal, you would obtain it from which set of outputs?&#10;A) RGBY&#10;B) Y, Pb, Pr&#10;C) Y, Cb, Cr&#10;D) both A & C

Accepted Answer

Y, Pb, Pr outputs provide analog component signal.

Deck 10: The Encoded Signal