Video cassette recorder with video tape redundancy protection

摘要

According to the present invention, when the user inadvertently attempts to reload the tape while the tape is seated in the deck, it detects this and outputs a predetermined alarm signal, thereby preventing an accident in which the device is damaged due to a user error. The present invention relates to a video cassette recorder having a video tape duplication prevention function. When the tape is loaded, the deck state detecting unit (30) outputs a predetermined level signal. Contact switch 40, which is configured to allow the switch electrode N attached to the back of the cover M to conduct between the two switch contacts S1 and S2 while the cover M of the tape insertion hole is rotated, according to a predetermined control signal. A state storage unit 60 for setting the tape loading situation as the corresponding data by storing the flag data of the first level, according to a predetermined drive command. When the tape loading detection signal is applied from the display unit 70 for outputting an alarm message for the tape over-insertion, the display driver 80 for driving control of the display unit 70, and the deck state detection unit 30, the state When the flag level of the first level is set in the storage unit 60 and the two switch contacts S1 and S2 of the contact switch 40 are shorted while the flag level is set to the first level, the display driver ( It characterized in that it comprises a control unit for controlling the output of the alarm message for the duplicate tape insertion by driving the display unit 70 through 80.