Apparatus and method of data backup using a video tape recorder

摘要

Apparatus and method of data backup using a video tape recorder (VTR) where a backup composite video signal is generated by adding horizontal and vertical synchronous signals to digital data received from a host computer via a communication port, the backup composite video signal or an actual composite video signal input via an input connector of the VTR is selectively switched and input/output in accordance with a selection control signal, and the switched input is recorded/reproduced onto/from the video tape in accordance with a predetermined magnetic recording/reproducing method, thereby integrating data backup function and the unique function of the VTR. An operation mode of the VTR is switched in accordance with commands from the host computer. In addition, a luminance signal is frequency modulated to the frequency band extended up to those for a chrominance signal so that further more amount of backup data can be recorded onto the video tape.