Abstract: A concurrent arbitration system and method are provided wherein the most recent requester retains control of a system resource under certain conditions and is allowed access to the resource during a portion of an arbitration cycle which will result in the granting of access to the resource by another requester. This overlapping of a resource access cycle and an arbitration cycle decreases the overall arbitration time and therefore reduces the overall resource access time.

Abstract: A synchronization separation circuit is used to separate the synchronization signal portion of a green video signal. This synchronization signal is used to enable first and second comparators which compare the synchronization portion of the green video signal with the synchronization portions of the red and blue video signals respectively. A differential amplifier for each of the red and blue video signals, enabled by the green synchronization pulse and driven by the appropriate comparator, produces a synchronization pulse identical to that of the green video signal which is then added to the red or blue video signal.