KR0155724B1 - Method for protection to rumple tape in vcr - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tape wrinkle prevention method in a recording / playback apparatus, and more particularly, to a tape wrinkle prevention method for determining whether a signal is picked up from a head and preventing the tape from being wrinkled.

For this purpose, the signal from the full-width erasing head and the audio / control head is determined in the first and the first discrimination process of determining whether a signal is output from the full-width erasing head or the audio / control head and loading the tape to the device. If is not outputted, a predetermined signal is recorded on the tape, and then the signal is output from the second discrimination process, the first discrimination process, and the second discrimination process of repeatedly determining whether the signal is output from the full-width erasing head or the audio / control head. If not present, the process includes ejecting the tape by performing an eject mode.

Therefore, it is possible to determine whether the signal output is picked up from the full-width erasing head or the audio / control head, thereby preventing damage due to the wrinkling of the tape.

Description

How to prevent tape wrinkle

1 is a block diagram of an apparatus for carrying out the invention.

2 is a flow chart of the tape wrinkle prevention method according to the present invention.

3 is a timing diagram according to FIG.

* Explanation of symbols for main parts of the drawings

10: head drum 20: vertical pole

30: Slant Pole 40: Full width sweep head

50: audio / control head 60: amplifier

70 filter 80 AC-DC converter

90: control signal amplifier 100: system control unit

110: buffer

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tape wrinkle prevention method in a recording / playback apparatus, and more particularly, to a tape wrinkle prevention method for determining whether a signal is picked up from a head and preventing the tape from being wrinkled.

In general, a recording and reproducing apparatus is a device for recording a signal applied from the outside to a tape, which is a recording medium, or reproducing a signal recorded on a tape, for example, a video cassette recorder or a camcorder. However, such a recording and reproducing apparatus has a problem in that when a tape is loaded, a tape may be wrinkled, and a signal recorded on the tape may be damaged.

Accordingly, an object of the present invention is to provide a tape wrinkle prevention method capable of preventing the tape from wrinkles by detecting that the tape is separated to solve the above problems.

In order to achieve the above object, a recording and reproducing apparatus comprising the steps of: loading a tape to mount the apparatus; A first judging step of judging whether a signal is output from the full-width erasing head or the audio / control head; If a signal is not output from the full width erasing head and the audio / control head in the first determination process, a predetermined signal is recorded on a tape, and then repeatedly determined whether the signal is output from the full width erasing head or the audio / control head. Second screening process; If there is no signal output in the first determination process and the second determination process, it characterized in that it comprises the step of ejecting the tape by performing the eject (Efect) mode.

Hereinafter, with reference to the accompanying drawings will be described in detail with respect to the present invention.

1 shows a block diagram of an apparatus for carrying out the invention.

In FIG. 1, the tape 120 spans the head drum 10, the vertical pole 20, and the slant pile 30, respectively, to perform recording and reproducing operations. In addition, the erasing operation is performed at the time of recording through the full-width erasing head 40 and the audio signal and the control signal are output through the audio / air head 50.

Figure 2 shows a flow chart of the tape wrinkle prevention method according to the present invention.

The tenth step is a process of loading the tape 120 to mount the device, and the 20th to 50th steps are the first discrimination to determine whether a signal is output from the full-width erasing head 40 or the audio / control head 50. If the signals are not output from the full width erasing head 40 and the audio / control head 50 in the first discrimination process, steps 60 through 80 record the predetermined signal on the tape 120, and then repeat the full width erasing. A second determination process is used to determine whether a signal is output from the head 40 or the audio / control head 50. In step 90, if there is no signal output from the first determination process and the second determination process, the eject mode is used. This process is to eject the tape.

Next, the operation flow of the flow shown in FIG. 2 will be described with reference to FIG. 1.

First, the tape is loaded by loading the tape on the device (step 10). At this time, the external video / audio signal state maintains the EE (Electric to Electic) mode, and only the servo system performs the play mode.

Next, it is determined whether a signal is output from the full-width erasing head 40 and the audio / control head 50 (step 20). Here, the signal output from the full-width erasing head 40 is referred to as M1, and the signal output from the audio / control head 50 is referred to as M2.

Next, when both M1 and M2 signals are input from the system control unit 100, the tape is normally loaded and the program execution of the tape wrinkle prevention method is finished (step 30).

If the M1 signal is output and the M2 signal is not output or the M1 signal is not output and the M2 signal is output, it is determined that the tape 12 is separated from the vertical pole 20 to perform the eject mode (steps 40 and 50). ).

When the next M1 and M2 signals are not output, it is necessary to determine when there is no signal recorded on the tape 12. Therefore, in order to record a predetermined signal on the tape 120, the system control unit 100 receives a predetermined pulse signal (M3). ) The output M3 signal is recorded on the tape 120 through the full width erasing head 40 (step 60).

When the counting time is completed by counting the next predetermined time, the operation after the thirtieth step is repeatedly performed.

In FIG. 3, FIG. 3 (a) is timing for loading the tape, and (b) h is timing for loading when the tape is loaded. FIG. 3 (c) is playback mode in the servo system. While performing the operation, the timing for the check operation is displayed to check whether the tape is detached for a predetermined time t.

As described above, in the recording / reproducing apparatus, it is possible to determine whether the signal output is picked up from the full-width erasing head or the audio / control head, thereby preventing damage caused by the wrinkling of the tape.

Claims (4)

CLAIMS 1. A tape wrinkle prevention method of a recording and reproducing apparatus for preventing a wrinkle of tape, comprising the steps of: loading a tape to mount the apparatus; A first judging step of judging whether a signal is output from the full-width erasing head or the audio / control head; If a signal is not output from the full width erasing head and the audio / control head in the first determination process, a predetermined signal is recorded on a tape, and then repeatedly determined whether the signal is output from the full width erasing head or the audio / control head. Second screening process; And a step of ejecting the tape by performing an eject mode when there is no signal output from the first discrimination process and the second discrimination process. The method of claim 1, wherein the tape wrinkling method maintains an electric to electrical (EE) mode and performs only a servo system in a regeneration mode. The audio / control head according to claim 1, wherein the first determination process is performed when a signal is picked up at the full width erase head and no signal is picked up at the audio / control head or a signal is not picked up at the full width erase head. The method of preventing the tape wrinkles, characterized in that performed in the case where the signal is picked up. The method of claim 1, wherein the second determination process is a process of determining whether a signal is output when a signal is not recorded on the tape.