Video Signal Tone Controller Segmentation

The patent segments the video signal processing into distinct functional blocks: a gamma processing block that applies standard gamma characteristics, and a separate tone curve processing block that applies arbitrary curve characteristics. This segmentation allows each block to operate independently, simplifying the overall system architecture while maintaining both standard and custom tone adjustment capabilities.

The patent applies gamma processing preliminarily to the video signal before applying arbitrary curve characteristics. By establishing the standard gamma baseline first, the subsequent tone curve processing can focus solely on adding custom characteristics without having to recalculate the entire processing pipeline, thereby reducing computational complexity.

The patent divides the processing system into multiple independent circuit sections, each responsible for a specific function (gamma processing, tone curve processing, output generation). This segmentation enables easier adjustment because each section can be configured and tuned independently without affecting the others, while the modular structure keeps overall device complexity manageable.

The patent designs the processing circuit sections to be multi-functional where possible. For example, the tone curve processing section can handle both standard and arbitrary curve characteristics, and the output section can generate multiple types of video signals. This universality reduces the need for separate dedicated circuits for each function, thereby improving ease of adjustment without proportionally increasing device complexity.