Glossary of TV Technologies and Audio Standards
ALLM (Auto Low Latency Mode)
Definition:
Automatically switches the TV to Game Mode when a console is detected, minimizing input lag.
Benefit:
It reduces the delay between pressing a button and seeing the action on screen.
Smooth controls = better gameplay.
Brightness
Definition:
Measured in nits, brightness affects how visible and vibrant a screen appears in different lighting conditions.
Ranges:
- Budget TVs: ~200–300 nits
- Standard TVs: ~500 nits
- High-end models: 600+ nits
If your room gets a lot of daylight, go for 500 nits or more!
Contrast
Definition:
The difference in brightness between the darkest and brightest parts of an image.
Standard Ratio: Typically 1000:1, but higher contrast ratios deliver more visible details in shadows and highlights.
Strong contrast helps reveal fine textures and depth in cinematic scenes.
Diagonal (Screen Size)
Definition:
The physical size of the TV screen is measured diagonally in inches.
Notes:
- Most TVs follow standard sizes (e.g., 55″, 65″, 75″), though some may vary slightly by 1–2 inches depending on the manufacturer.
- For living rooms, 55 to 75 inches is considered ideal for an immersive viewing experience.
Larger diagonals mean a more cinematic experience—especially with 4K or 8K resolution.
Display Technology
Definition:
The type of panel used to generate an image on the screen affects brightness, contrast, color accuracy, and overall performance.
Main Types:
- LCD (Liquid Crystal Display): Uses liquid crystals and a backlight to produce images.
Retail models may be labeled as LED or QLED depending on enhancements. - OLED (Organic Light Emitting Diode): Each pixel lights up independently, offering deep blacks and vivid contrast.
Organic materials can be prone to image retention or burn-in. - MicroLED: Uses microscopic inorganic RGB diodes for self-emitting light.
Provides exceptional brightness and durability—often seen as OLED’s next-gen successor.
Choose based on contrast needs, ambient light, and viewing preferences.
Edge LED vs Direct LED (DLED)
Edge LED: Uses corner-based backlights, which may cause uneven lighting—especially in dark scenes.
Direct LED (DLED): Features backlighting across the entire screen for more uniform brightness and color.
For better contrast and screen consistency, Direct LED is usually preferred.
Frequency (Refresh Rate)
Definition:
Measured in Hz, it determines how many frames per second the screen displays.
Recommendations:
- Movies & TV: 24–30Hz is enough
- Sports & gaming: 120Hz or higher preferred for smooth motion
Higher refresh rate = less blur and smoother action scenes.
Filmmaker Mode
Definition:
A viewing mode developed with input from Hollywood filmmakers to preserve the director’s creative intent.
Benefits
- Disables motion smoothing and noise reduction
- Maintains original frame rates, color profiles, and aspect ratios
- Compatible with HDR and SDR content
Tip: Use this mode when watching movies for an authentic cinematic experience.
HGiG (HDR Gaming Interest Group)
Definition:
A collaborative initiative between Sony and Microsoft to improve HDR gaming consistency across devices.
Purpose:
- Ensures TVs and game consoles communicate HDR settings properly
- Avoids oversaturation or clipped highlights during gameplay
Look for “HGiG Compatible” when choosing a gaming TV.
HDMI (High-Definition Multimedia Interface)
Definition:
A universal connector for transmitting audio and video between devices: game consoles, Blu-ray players, soundbars, and more.
Types:
- HDMI 2.0: Supports 4K with HDR
- HDMI 2.1: Adds support for 8K, VRR, and ALLM
Choosing the right HDMI version affects image quality, speed, and gaming performance.
HDR (High Dynamic Range)
Definition:
Expands the range between the darkest and brightest parts of the image. HDR improves contrast, highlights, and overall realism.
Note:
Some budget TVs that are labeled as HDR are too dim to showcase the feature effectively.
HDR makes sunsets glow and shadows feel cinematic—but only with proper brightness.
HDR Standards: HDR10, HDR10+, Dolby Vision, HLG
HDR10: The most common HDR format; universally supported.
HDR10+: Adds dynamic metadata for scene-by-scene brightness adjustment.
Dolby Vision: Advanced format with wide color gamut and dynamic range; used by Netflix and Apple TV.
HLG: Simplified HDR standard for broadcast TV; rarely used.
To enjoy premium HDR content, make sure your TV and video source support the same format.
LED or LCD Panels
Definition:
Most modern TVs use LED or LCD panels based on liquid crystal technology and LED backlighting.
Performance:
Entry-level and mid-range models typically offer lower brightness and contrast, which may reduce visibility in brightly lit rooms.
LCD TVs are budget-friendly but may struggle in rooms with lots of natural light.
Matrix (Panel Type)
Definition:
The screen component that produces the image is often called the “panel.”
Types:
- LED/LCD: Common in entry-level and mid-range TVs
- QLED/QNED: Enhance LCDs with quantum dots for brightness and color
- OLED & MicroLED: Use self-emitting pixels for deeper blacks
Want perfect blacks? Look for self-emitting panel technologies like OLED or MicroLED.
MEMC (Motion Estimation, Motion Compensation)
Definition:
Adds artificial frames between real ones to smooth motion, especially in fast-moving scenes.
Effects:
- Reduces blur
- May cause unnatural visuals (“soap opera effect”)
- Not recommended for gaming
Great for sports—less ideal for movies or interactive gaming.
Mini-LED
Definition:
An advanced form of Direct LED backlighting that uses thousands of microscopic LEDs.
Advantages:
- Brighter highlights, deeper shadows
- Local dimming creates more natural contrast
Mini-LED enhances LCD performance without changing the panel itself.
OLED and QD-OLED
OLED: Each pixel emits its own light, delivering perfect blacks and vivid colors. Ideal for dark rooms.
QD-OLED: Adds a layer of quantum dots to OLED for even brighter and richer visuals.
OLED is unmatched in picture quality—but can appear dim in very bright spaces.
QLED and QNED Technologies
Definition:
Quantum-dot enhanced LCD panels that improve brightness and contrast.
Limitations:
- Cannot produce true black
- Dark scenes may have grayish or bluish tints
Quantum dots = enhanced color, but OLED still wins in deep blacks.
Resolution (4K, 8K, Full HD)
Definition:
The number of pixels used to form an image.
Guidelines:
- More pixels = sharper detail
- 4K is optimal for most rooms
- 8K suits large-format TVs and ultra-close viewing
Resolution impacts clarity—but viewing distance matters too!
Surround Sound Standards (Dolby & DTS)
Modern TVs can decode various surround sound formats, but decoding doesn’t always equal true playback—internal speakers often lack the power to fully reproduce effects.
Dolby Technologies:
- Dolby Digital (AC-3): Basic surround sound support; standard for most TVs.
- Dolby Digital Plus (E-AC-3): Advanced format with up to 7.1 channels, supporting metadata for Dolby Atmos.
- Dolby AC-4: Successor to AC-3, with better compression and expanded support for object-based audio.
- Dolby TrueHD: A lossless codec used in Blu-ray for both channel-based and Atmos audio.
DTS Technologies:
- DTS Digital Surround: Entry-level DTS surround sound support for TVs.
- DTS-HD High Resolution: Expanded audio with support for up to 7.1 channels.
- DTS-HD Master Audio (DTS-HD MA): A lossless format often used on Blu-ray discs.
- DTS:X: Object-oriented surround sound for spatial effects; requires HDMI eARC for proper passthrough.
For best audio, pair your TV with a soundbar or AV receiver that fully supports these formats.
VRR (Variable Refresh Rate)
Definition:
A gaming technology that synchronizes the screen’s refresh rate with the console’s frame rate, reducing stutter and tearing.
Types:
- HDMI VRR
- FreeSync
- G-Sync
- Adaptive Sync
For gamers, VRR is a must-have to keep fast scenes fluid and responsive.
