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What Is RGsB For In Projectors?

What Is RGsB For In Projectors?

You would agree with me that projectors have become common devices. This is due to the wide range of features that they possess.

Some of the features include high resolution, low noise and a great contrast. When combined, these features give the user a great viewing experience.

A projector’s color accuracy and adjustment is very important. It contributes greatly to the quality of the display.

Proper color and image processing makes this possible. How? It ensures that the colors are replicated on the screen as they should be.

This means that red looks red, green looks green and blue looks blue. A proper mix of these colors at every point in time results in color accuracy.

In this article, I will explain the RGsB and its role in projector color accuracy. Don’t go anywhere!

What is the RGsB?


To start with, RGB refers to a color model in which the R (red), G (green) and B (blue) lights are combined in different ways to produce a wide range of colors.

Projectors use this color model for their color processing. This is why they have a need for RGB signals.

RGB signals separate each color/signal into its own channel while also carrying sync information.

Sync refers to a synchronization of the lines on the screen. All analog video signals carry a horizontal and vertical sync signal alongside the color signals.

The RGsB is a form of a component video in which the analog video signal has been split into component channels without compression.

Readily, the sync signal would be transported via a different cable separate from the color cables as in the “RGBs” format, but the RGsB format translates to “sync on green”.

This means that the green cable carries both the horizontal and vertical sync signals. It carries them alongside its color signal, resulting in only three cables.

A lot of displays are incompatible with RGsB. So, it will be necessary to connect it to a device that can separate the sync signal from the green cable and convert it into a more common signal.

Some projectors are compatible with the RGsB format. We will now examine more information on its use in projectors.

What is RGsB for in projectors?

Poor image quality would result in a poor viewing and user experience. This would, in turn, reduce the desirability of the device.

Projectors require color processing to produce high quality videos and imagery. The RGsB format of RGB signals functions to serve this purpose.

You can connect your HDTV tuner or DVD player to your projector. This is where the RGsB format comes in handy.

Component cables are used for the RGsB connection. They come in a trio of red, blue and green colors.

Thanks to its improved picture quality and HD support, a lot of modern devices today have at least one set of RGsB inputs. Projectors are not exempted from that list.

RGsB vs Composite video

RGsB Vs Composite Video

The RGsB is one of the three analog formats of a component video.

The composite video technology is one that is slowly dying out. This is because of its inability to support HD video signals.

In comparison to component videos (RGsB), the composite connection provides low quality pictures at low resolutions.

It is heavily compressed. It loses a lot of its resolution and picture clarity during transmission.

Only older equipment benefits from using composite video. This is because they do not support the component video format.

However, to ensure compatibility with older devices, some projectors come with at least one composite video input.

For projectors that do not come with an option for composite video input, connectivity to older equipment can be made possible. Just use suitable adapters or converters.

Here’s an example:

AllAboutAdapters Composite S-Video to Component Video RGB Sync On Green Converter
  • Dual-purpose composite RCA video and S-video to YUV/RGB converter with selectable component video...
  • Selectable video output format between 15Khz RGsB and interlaced YCbCr. Converting standard...
  • Converting standard composite video or S-Video signal into RGB at 15.625Khz/50Hz or 15.734Khz/60Hz...

Last update on 2023-03-21 / Affiliate links / Images from Amazon Product Advertising API.

Limitations of RGsB

RGsB is an analog form of the component video. It possesses inherent limitations that are due to its analog format.

As is generally known, analog signals are transmitted via waveforms. This makes them vulnerable to interference.

Radio waves and electronic signals from nearby devices can cause a distortion in the analog signal being transmitted.

In comparison to digital signals, analog signals have a lower bandwidth. This means that an increased compression which can adversely affect the image quality is a possibility.

However, this compression is less noticeable in component signal than in composite.

Signals transmitted via RGsB component cables will evidently not be as clear as those transmitted digitally. However, they will have more quality than signals transmitted via composite cables.


Image and color processing are important factors in determining the quality of a projector’s output.

The RGsB format has a fair share of its analog limitations. Still, it provides improved image quality and a HD support for projectors.

Whenever you are faced with the option of choosing between a composite video or a component video (independent of its format), a component video will always be the right answer.

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