Overview: Bt860/861
Multiport YCrCb to NTSC / PAL / SECAM Digital Video Encoder
The Bt860/861 is a multiport digital video encoder with pixel synchronization and per-pixel blending capabilities. The three 8-bit YCrCb data ports allow for a variety of video and graphic overlay configurations useful in video set-top box applications. The Bt860/861 is specifically designed for video systems requiring posite, Y/C (S-Video), and simultaneous ponent YUV or RGB (SCART) video signals. Worldwide video standards are supported, including NTSC-M (N. America, Taiwan, Japan), PAL-B,D,G,H,I (Europe, Asia), PAL-M (Brazil), PAL-N (Uruguay, Paraguay), PAL-Nc (Argentina), PAL-60, NTSC-443, and SECAM. The Bt860 and Bt861 are functionally identical except that the Bt861 can output the Macrovision 7.x anticopy algorithm. Multisource video is a key feature of the Bt860/861. Two general purpose ports (P and OSD) allow synchronization with sources that can share clock and frame timing control with the Bt860/861, such as digital video and graphic overlay content generated by an MPEG video decoder. A third port (VID) is specifically configured to interface with video decoders such as those in the Conexant VideoStream decoder family. Any pair of these three ports can be synchronized and blended.
