Abstract
For high-definition video and film, both symmetric (1-to-1) and asymmetric combinations of sources and timings are used for output genlock. This paper describes techniques being used in a system to lock both types of combinations. To simplify the numerical complexity of these timing relationships, a new mathematical notation (recently invented for describing digital audio timing relationships), called the “log prime” vector is introduced. This paper considers timing stability challenges for high-definition interfacing, and presents the genlock architecture of a high-definition I/O board now being used in multiprocessor computer servers and graphics supercomputers.
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