Question

A screen has 1024 scan lines with aspect ratio 4:3 and bit depth 16, how many bits per second
are required to show 60 frames per second?

Answer 1

75.48*10^7 bits per second  are required to show 60 frames per second.

Given: A screen has 1024 scan lines with aspect ratio 4:3 and bit depth 16.

To Find: Bits per second  required to show 60 frames per second.

Solution:

We have been given the following values:

Scan lines $=1024$

But, we know that scan lines are equal to the vertical pixels.

So,

Vertical pixels $=1024$

Now,

Horizontal pixels $= Vertical pixels*\frac{1}{aspect ratio}$

                            $= 1024*\frac{3}{4}$

                            $=768$                  

Now, we know the resolution is the product of vertical and horizontal pixels,

Resolution $=1024*768$

                  $=7,86,432$

Also,

No. of bits per frame $=Resolution*Bitdepth$

                                  $=7,86,432*16$

                                  $=1,25,82,912$

                                  $=12.58*10^{6}$

No. of bits required per second $=No.ofBitsperFrame*FramesperSecond$

                                                    $=12.58*10^{6}*60$

                                                    $=75.48*10^{7}$

Hence, 75.48*10^7 bits per second  are required to show 60 frames per second.