If you have been a user of a camcorder, you might have wondered about how simply it does the wonder in such a tiny box of electronics. But if you know the actual way it works, you may be left with utter surprise.
In today’s article, we are up for crafting the steps of how a camcorder works. As a camcorder user yourself, this should be a 101 for you.
The Electronics of A Camcorder
Before getting to know the working process, let’s have a look at the list of electronic items it’s consisted of. We’re not listing the whole list, however. Here are just a couple of parts that are at the center of the action.
The CCD- The part that captures the image in a camcorder is called CCD, standing for Charged Coupled Device. It’s an electronic sensor that captures light on its body.
In some camcorders, there are 3 CCDs. As there are three primary colors, each works for one color.
The Iris- It’s the part that decides how much of the light will fall upon the lens.
How Video Signals are Created Inside A Camcorder
Once the light hits the CCD of the camcorder(through iris and lens), a video signal is generated inside. These video signals are created at the exact same way that television does.
There are two set of fields that are responsible to make up images on the camcorder CCD. To divide the scale lines, these fields are divided into odd and even numbers.
As you continue to record videos with the camcorder, there created another layer of fields when the previous layer passes on behind the CCD. This layer creation is known as sensor layer.
Throughout the sensor layer, each of the electric signals for the lights entered is recorded. Finally, the whole record is stored and written on the tape, which you can use to display the video later.
The Exception with Digital Camcorders
The aforementioned process is about analog camcorders. When it comes to digital camcorders, there are some added twists at the last step.
As you know, there is no tape inside a digital camcorder to record the video signals. Instead, there are digital memory cards. And the video signal is supposed to be recorded as bytes inside it.
In digital camcorders, there is a special converter that turns the signals into byte date and stores them on the memory card. This information is re-writable and can be exported with computer and laptops.
The Playback Mode
When the recorded videos on the tape recorder are played back again with a VCR, that’s what we call the playback. To understand how the video recorder works, we feel that it’s also important to understand the playback mode as well.
As you know, there is a recorded version of the electric signals in the tape. The VCR has tools to amplify the signals and convert it into a composite video signal. Then the signal goes directly to your television(or the monitor you are using to display the video).
Also, you can view the video at the viewfinder of the camcorder itself. But that’s only for the digital camcorders.
With the evolution of the camera technology, the functionalities and the size of the cameras has gone inversely proportional. Now, we have action cams which are ultra tiny in size but awesome at the action. Hopefully, we’ll talk about those soon in another post.