LVDS-dat
LVDS (Low-Voltage Differential Signaling) is an electrical signaling standard, not a specific video protocol.
Whether it’s "parallel" or "serial" depends on how it’s used:
In Display Interfaces
-
Old PC laptop panels (LVDS display interface) use serialized pixel data:
- Pixel data from a parallel RGB bus is serialized into multiple LVDS lanes.
- Typically, 3 data pairs + 1 clock pair for single link (supports up to ~1366×768).
- 6 data pairs + 1 clock pair for dual link (for higher resolutions like 1920×1080).
- Each LVDS lane still carries data in a parallel-to-serial fashion internally.
Key Points
- LVDS = Serial differential transmission (each lane is serial).
- LVDS display interface = multiple serial lanes operating in parallel (multi-lane serial).
- Main goal: lower EMI, higher speed, longer cable runs vs. raw parallel RGB.
Summary Table
| Aspect | LVDS (as used in displays) |
|---|---|
| Signal Type | Differential |
| Transmission per lane | Serial |
| Overall interface | Multiple serial lanes in parallel |
| Typical Usage | Laptop screens, industrial monitors |
| Speed per lane | Hundreds of Mbps |