This work presents a multistandard digital HD/SD-SDI audio multiplexer (embedder) capable of inserting and replacing existing ancillary audio AES-EBU packets. The insertion of audio packets in SD-SDI video is achieved with an ad-hoc modular unit that shifts the existing audio packets in the video frame. This block enables the use of the entire multiplexer system in cascaded configuration along the same video line, a fundamental requirement in professional television studios. The embedder, implemented on a Virtex-5 FPGA, accepts 48\,kHz AES3 synchronous audio, SMPTE 259M-C and SMPTE 295M Full HD video, occupies a small area and it is installed on a system board inclusive of dedicated signal conditioning IC. The full system is tested for robust operation in audio/video production environments and for compatibility with older equipments.
|Titolo:||A Multistandard Digital HD/SD Audio Multiplexer with Modular Ancillary Packet Substitution|
|Data di pubblicazione:||2012|
|Digital Object Identifier (DOI):||http://dx.doi.org/10.1109/TCSVT.2012.2202014|
|Appare nelle tipologie:||1.1 Articolo in rivista|