KR910005289A - How to search tape recording status of video tape recorder - Google Patents

Abstract

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Description

How to search tape recording status of video tape recorder

As this is a public information case, the full text was not included.

1 is a schematic diagram of a VTR tape recording state retrieval apparatus most suitable for implementing the present invention;

A, B, and C of FIG. 2 are operation state diagrams of the display unit included in the recording state search apparatus shown in FIG.

3 is a flowchart illustrating a method for searching a tape recording state of a videotape recorder according to the present invention.

Claims (1)

A data input unit for selecting a predetermined mode with a data key, a micom for receiving a video synchronization signal and a control pulse signal recorded on the tape according to the data selected by the data input unit, and the number of programs counted by the micom 1. A method of retrieving a tape recording state by a recording state retrieval apparatus of a tape comprising a display unit for displaying a time and a free space capacity time of the tape. A first step of inputting the total capacity time of the tape in the rewinding state to the data input unit and FF rolling the tape to detect the video synchronization signal until the tape shows the first state; and in the first step, the video synchronization signal Is detected and data value is transmitted from the data input unit. A second process indicating a count operation state by calculating a number of programs using a flag and controlling a control pulse recorded on the tape with a microcomputer; and counting the tape if the first process video synchronization signal is not detected. The third process of storing the number of programs and the recording capacity time in the microcomputer and then clearing the count value to zero; if the end sensor is detected when the count operation is not performed in the third process, rewinding is performed. A fourth process representing the total capacity time which has not been recorded, a fifth process of flashing the display mode for the count display mode and the number of programs if no sensing is detected in the fourth process, and the tenth process after the fourth process is performed. Enter the number of programs with the key to calculate and display the recording capacity time and flash to move to the normal Method for retrieving the tape recording status of a video tape recorder, characterized in that the sixth step of transitioning to the normal process immediately if the number of programs is not entered in the tenkey. ※ Note: The disclosure is based on the initial application.