Definition of quarter video graphics array

Photonics Dictionary

quarter video graphics array: The quarter video graphics array (QVGA) is a display resolution standard used in video graphics, particularly in LCD displays, digital cameras, mobile phones, and other portable electronic devices. The term "Quarter VGA" reflects the fact that it offers one-fourth the resolution of the original VGA (video graphics array) standard.

The standard resolution of QVGA is typically 320 pixels horizontally by 240 pixels vertically, resulting in a total of 76,800 pixels. This resolution provides a relatively low level of detail compared to higher-resolution standards but is suitable for many applications where space, power consumption, and cost are significant considerations.

QVGA displays are characterized by:

Compact size: QVGA displays are often used in small electronic devices due to their compact size and low power consumption. They are commonly found in devices such as feature phones, handheld gaming consoles, and digital cameras.

Cost-effectiveness: The lower resolution of QVGA displays makes them more cost-effective to manufacture compared to higher-resolution displays. This affordability is particularly advantageous for budget-conscious applications.

Acceptable image quality: While QVGA displays offer lower resolution compared to higher-definition standards, they still provide acceptable image quality for many applications, especially when space and power constraints are more critical than high-definition graphics.

Usage in embedded systems: QVGA displays are commonly used in embedded systems and portable devices where graphical user interfaces (GUIs) are required but high-resolution displays may not be necessary or practical.

Compatibility: Many older devices and systems are designed to support QVGA displays, making them compatible with a wide range of existing hardware and software platforms.

Despite being an older display standard, QVGA remains relevant in many applications, especially in devices where cost, size, and power consumption are primary considerations. However, as technology advances and higher-resolution displays become more prevalent and cost-effective, QVGA displays are gradually being replaced by higher-definition alternatives such as WVGA (wide video graphics array) and HD (high definition) displays.

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