Since the 1970’s, General Digital has played the role of an engineering design and consultation company, a manufacturer of flat panel display products, and a software development, test and verification house.
More recently, General Digital began offering a variety of laboratory services that quantify or enhance the capabilities of our flat panel display and monitor products. One such service is our display calibration and matching process, which provides customers with cross display image uniformity and true-to-life image reproduction. For any customer of displays or monitors, this service is of great value.
Following is a brief list of Frequently Asked Questions intended to better inform the reader of the display calibration and matching process.
“What optical characteristics of a display can General Digital calibrate?”
Display calibration and matching (DCM) ensures that multiple monitors operated side by side, such as in an air traffic control tower or a shipboard navigation system, appear identical. This is accomplished by calibrating display attributes to a common standard, or to a customer-specific criteria. The following display attributes can be calibrated:
- Black level
- HueRGB (Color)
- Gamma values for each color channel over 10 gray scale levels
“What are the benefits of display calibration?”
The importance of display calibration cannot be overstated. Involving the use of both hardware and software elements, it ensures that a display is efficiently operating at its full quality capabilities. In fact, display settings that degrade the performance of the backlights can be adjusted to optimal values during a professional calibration. The primary benefits of matching your monitors to each other are:
- Image appearance consistant across all calibrated and matched monitors, which is critical in certain applications, such as medical imaging
- Longer display life as a result of allowing the backlight to operate at its most efficient levels
- Greater picture quality by adjusting color temperature to conform to D65 standards
- Lower power consumption may be achieved in cases where higher brightness levels are unnecessary
- Lower image distortion by evaluating the entire video signal path and any “picture enhancement options” which may introduce noise into the video signal, thereby causing a decrease in picture resolution, detail and accuracy
“How is display calibration performed?”
General Digital-trained technicians set up the target monitors in our Optics Laboratory. The monitors are connected to high performance video generators and colorimeters. Special software is run to analyze the monitors under a wide range of video modes and test conditions to gather performance data, which is analyzed to determine optimal calibration. After calibration is successfully performed, a calibration certificate is generated that summarizes the user adjustable video settings, so that the values can be restored if unintentionally modified.
“What markets can potentially benefit from this service?”
Markets can include air traffic control, shipboard navigation, medical imaging, video walls, to name just a few. Anywhere two or more monitors are arranged in close proximity, DCM can make the difference between a professional appearance and a catastrophic experience.
“On whose display products do we perform this service?”
Naturally, General Digital can perform its DCM process on any of its own monitors and display kits. Additionally, we can accommodate third-party display products and monitors, provided they include all of the required electronics and final display overlays (see What is needed to properly calibrate a monitor or display? below). Also, displays sent to General Digital’s Optical Bonding Laboratory (OBL) for bonding or enhancement can be calibrated to D65 standards, achieving a full range of accurate picture colors, provided they are supplied with the items listed below.
“What is needed to properly calibrate a monitor or display?”
In order to ensure a proper calibration, a customer will need to provide, at minimum, the display(s) or monitor(s) complete with overlays, film work, backlight, backlight controller and LCD controller.
“How often should a monitor or display be calibrated?”
General Digital recommends that calibration be performed once a year, after the initial calibration, in order to enjoy and maintain all of the benefits associated with display calibration and matching.
“What does a customer receive with each display calibration?”
At the completion of the calibration and matching process, General Digital provides a certificate supplying before and after calibration data, ensuring an accurate calibration. The certificate also includes a list of all user-accessible calibrated values; if calibration is affected unintentionally by keypad, it can be reset manually.
Calibration for the ages
With the many benefits it offers, high quality display calibration and matching ensures that users get the most out of their display or monitor. General Digital, the innovators of flat panel technology, offers this resource as part of our commitment to provide quality products and expert services. Our specialized equipment coupled with our stellar experience means your monitors and displays are optimized to the highest level attainable. And with that, General Digital will provide maintenance and support for years to come.