RCA Large-Screen Narrow-Neck 110°Color Television System

RCA has developed, sampled, anid plans to iintroduce commercially in Europe late in 1971 a large-screen, narrow-neck 110°color television system that features the RCA A67-1 SOX 25V color picture tube having a neck 29mm in diameter and the associated RCA XD4422-J 12 PST (Preci¿ion Static Toroid) deflection yoke. This novel, high-performance, economical, and basically simple system provides improved picture sharpness and is comparable to other commercial color television systems with regard to convergence, beam landing, light output, color purity, high-voltage stability, reliability, and thermal mask expansion characteristics. The required receiver deflection interface circuits for horizontal scan, vertical scan, raster shape correction, high-voltage, and convergence are straightforward extensions of commercial tube or solid-state 900 circuits. Unlike other large-screen 110°systems, no added special circuits, such as the corner convergence, dynamic blue lateral or dynamic focusing circuits are required. The RCA large-screen, narrow-neck system can be set up and serviced using the well-established industry practices for color television employed throughout the world. No different or more complex servicing procedures are required.