The utility model relates to a GENLOCK
control circuit and a GENLOCK control device. The GENLOCK
control circuit comprises an
SYNC-IN input end, a super synchronous separator, an MCU (Microprogrammed
Control Unit) module and a synchronous phase-locked
chip, the input end of the super synchronous separator is connected with the
SYNC-IN input end, and the output end of the super synchronous separator is connected with the input end of the synchronous phase-locked
chip; the MCU module is connected with the input end of the synchronous phase-locked
chip; the utility model provides a highly flexible and digitally controlled GENLOCK
control circuit, the adopted chip is very concise in structure, a plurality of VCXOs, PLLs and timing generators are replaced, the design complexity is reduced, the space of a circuit board is saved, video and audio clocks and timing signals can be generated, and a plurality of devices are allowed to carry out genlock with an input reference.