KR970008237B1 - Apparatus and method for controlling editing in a vcr - Google Patents

Abstract

In case the control signal selected by the user is transmitted from the transmitter(11) and is inputted into the central control part(14) thru the receiver(12) and at the same time, key signal necessary for the VCR operation is inputted, the central control unit(14) judges whether the inputted control part(14) drives VCR to general mode, if judges it is recording mode, whole erasing head is worked and deck mechanism is driven by fast rewinding mode. And check whether rewinding from the picture recording starting point to the point of total erasing head is performed. And at the time of rewinding mode, erase the old image signal existing on the tape between the starting point of picture recording and the point of total erasing head.

Description

Editing device of V-Cal and its editing control method

1 is a diagram schematically showing a state in which a tape is loaded for recording or playback in a general VR system.

FIG. 2 is a view showing a pattern in which a video signal recorded on a tape is reproduced in a general VR.

3 is a block diagram of an editing apparatus of VRC according to a preferred embodiment of the present invention.

4 is a flowchart illustrating an edit control process of V-Cal according to an embodiment of the present invention.

* Explanation of symbols for main parts of the drawings

1: Full width erase head 2a, 2b: Loading pole

3: head drum 4: voice muting head

5: voice / control head 11: transmitter

12: receiving unit 13: key input unit

14: central control unit 15: signal reproduction unit

16: signal processing unit

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a VRC, and more particularly to prevent noise that may be caused by a video signal originally recorded when recording another video signal on a tape on which a video signal is recorded. An apparatus for editing and an editing control method thereof.

In general, the tape mounted on the VCA's deck mechanism for recording or reproducing is the full width erasing head 1, the loading pawl 2a, the head drum 93, as shown in FIG. ), The loading pole 2b, the voice cancellation head 4, and the voice / control head 5 in this order.

On the other hand, when recording another video signal on the tape on which the video signal has already been recorded, the video signal is recorded on the video track of the tape through the video recording head provided in the head drum 3, at which time the video signal is already recorded on the tape. The old video signal is erased by the low-width erasing head 1.

That is, the video signal recorded on the video track of the tape is removed by the full width erasing head 3 of FIG. 1, and then the video signal to be recorded through the video recording head (not shown) in the head drum 3 is recorded. After the audio signal of the old video signal is removed by the audio erasing head 4, the audio signal and the control signal for the new video are recorded through the audio / control head 5.

However, in the conventional VRC as described above, when the new video is to be superimposed and recorded on the tape on which the video signal has already been recorded, as shown in FIG. 2, the head in the head drum 3 is mounted. As a result, a portion in which the video signal is lost is generated between the point A at which the new video signal to be newly recorded is to be recorded and the point B erased by the full width and the erasing head 1.

Therefore, when the video signal is reproduced after recording according to the conventional method, noise occurs due to a missing part of the video signal, that is, noise is generated at the connection part of the screen when editing the video, causing image quality deterioration. The problem arises.

On the other hand, in order to prevent deterioration of image quality due to the above reasons, conventionally, a rotary erasing head is attached on the head drum 3 to erase the image signal already recorded in the portion where the image signal is missing, thereby improving the image quality. I could.

However, the above-described method must accurately erase the noise component of the missing portion of the video signal through the rotary erasing head, so that the accurate installation of the rotary erasing head is impossible, and the precise control of the rotary erasing head is impossible. There was a problem that the cost will rise.

Accordingly, the present invention is to solve the above-mentioned problems of the prior art, and to record the full width erase head with the adaptive control of the driving mode of the deck in the recording mode without attaching the rotary erasing head on the head drum. It is an object of the present invention to provide an editing device for V-Cal and an editing control method thereof capable of automatically erasing a signal existing in a missing portion of a tape positioned between recording points of a tape.

According to an aspect of the present invention for achieving the above object, from the receiving unit and the key input unit for receiving the key for the operation of the transceiver and V-SR for transmitting and receiving the control mode of the V-Cell selected by the user; The deck drive mode is controlled according to the input signal of the deck.In the recording mode, the deck is quickly rewound and fast-forward mode by the interval between the full width erase head and the recording start point of the tape based on the input signal from the signal reproducing unit. A central control unit for generating a control signal for controlling to be driven continuously, and providing a mode control signal to the central control unit in the recording mode, and in accordance with the control signal from the central control unit in relation to the deck mechanism A signal reproducing unit for reproducing the video signal recorded in the control unit; and a video signal output from the signal reproducing unit through a monitor. There is provided a VRL editing apparatus comprising a signal processor for processing into a displayable signal.

According to one aspect of the present invention for achieving the above object, the full width erasing head is operated by automatically operating the full width erasing head in the recording mode operation and automatically rewinding the recording start point of the tape to the portion where the full width erasing head is located. Erasing the image data existing between the recording start point of the tape and the tape, and if the erasing of the image data of the target tape section is completed in this erasing step, fast forward the data to return the recording start point of the tape to the initial position. There is provided a method for controlling editing of V-C, comprising a step of driving in a mode.

According to another aspect according to another aspect of the present invention for achieving the above object, a step of automatically rewinding the recording start point of the tape to the portion where the full width erasing head is located during the recording mode operation, and in this rewind step When the rewinding of the tape section is completed, the full width erase head is operated and the deck is fast-forwarded to the tape recording start point to return the tape to the initial position. There is provided a method for controlling editing of V-C, comprising the step of erasing the.

Other objects and various advantages of the present invention will become more apparent from the preferred embodiments of the present invention described below with reference to the accompanying drawings by those skilled in the art.

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

3 shows a block diagram of an editing apparatus of VRC according to a preferred embodiment of the present invention. As shown in the drawing, the editing apparatus of the present invention transmits a drive control signal of a V-C operated by a user, and transmits and receives a transmission unit 11 and a reception unit 12, and a key signal necessary for the operation of the V-Cal. Key input unit 13 for receiving the input to the central control unit, a central control unit 14 for controlling various driving operations of V-C corresponding to the input signal from the transmitting unit, and a control signal from the central control unit. A reproducing section 15 for reproducing a video signal from a tape, and a signal processing section 16 for processing a video signal output from the signal reproducing section 15 so as to be displayed on a screen and providing it on a monitor (not shown). It consists of.

Next, an operation process at the time of recording for editing according to an embodiment of the present invention having the above-described configuration will be described in detail with reference to FIG. 4 showing the control process.

First, when the control signal selected by the user is transmitted from the transmitting unit 11 and input to the central control unit 14 through the receiving unit 12 and at the same time the key signal necessary for the operation of V-Cal through the key input unit 13 is inputted. The central controller 14 determines whether the input control signal is in the recording mode (step 200).

If the determination result in step 200 is not the recording mode, the central control unit 14 drives the V-Cal in the normal mode (214). The deck mechanism is driven in fast rewind mode (204). Then, it is checked whether or not rewinding has been performed from the point where the unloading starts (point A in FIG. 2) to the point where the full width erase head is located (point B in FIG. 2) (step 206). Here, in this rewind mode, the old video signal of the tape area (missing part) existing between the recording start point and the full width erasing head is deleted.

Next, as described above, when the image data existing in the missing portion of the tape is erased, the central controller 14 immediately drives the deck mechanism in the fast-forward mode (step 208). Then, when the tape matches the original position, that is, the position of the recording start point (step 210), the drive mode is immediately switched to the recording mode, and then the desired recording is executed (step 212).

Therefore, the new video signal to be recorded can be recorded without the portion of the old video signal on the tape in which the video signal has already been recorded through the control process according to the present embodiment.

As described above, when the playback mode is selected by the user after the recording of the video signal to be recorded is completed, the video signal recorded on the tape through the signal reproducing unit 15 in accordance with the control signal from the central controller 14. Is reproduced, and the reproduced video signal is processed into a displayable signal through the signal processing unit 16, so that the user can view a video signal for reproducing a monitor (not shown).

Next, an operation process at the time of recording for editing according to another embodiment of the present invention will be described in detail with reference to FIG. 5 mainly showing the control process.

As can be clearly seen from the comparison between FIG. 5 and FIG. 4 showing the present embodiment, the editing method of the above-described embodiment performs fast rewinding, and between the recording start point and the section where the full width erasing head is located as the full width erasing head. In contrast to erasing video data (steps 202 and 204), the editing method according to the present embodiment performs fast rewinding of the tape to the portion where the full-width erasing head is located, and then fast-forwards to the recording start point. The only difference is that the video data of the tape section existing between the recording start points is erased (steps 306 and 308).

Therefore, this embodiment has some differences in the control process, but has substantially the same effect as the above-described embodiment.

As described above, according to the present invention, the deck mechanism is automatically driven at the time of recording without attaching a separate rotary erasing head, thereby erasing the old video signal existing between the recording start point and the full width erasing head. Not only can the image quality deterioration of the reproduced video signal due to the old video signal existing be effectively prevented, but also the effect of thinning and shortening and cost reduction can be obtained.

Claims (3)

A transmitter / receiver for transmitting / receiving the control mode of the VRC selected by the user and a key input unit for receiving a key necessary for the operation of the VRC; The deck drive mode is controlled in accordance with the input signals from the receiver and the key input unit, and in the recording mode, the deck is quickly rewound by the interval between the full width erase head and the recording start point of the tape based on the input signal from the signal reproducing unit. A central control unit for generating a control signal for continually being driven in the mode and the fast-forward mode; A signal reproducing unit which provides a signal for mode control to the central controller in the recording mode, and reproduces a video signal recorded on a tape in relation to a deck mechanism based on a control signal from the central controller; And a signal processing unit for processing a video signal output from the signal reproducing unit into a signal that can be displayed through a monitor. Operating the full width erasing head during the recording mode operation and automatically rewinding the recording start point of the tape to the portion where the full width erasing head is located to erase the image data existing between the full width erasing head and the recording start point of the tape. Wow; And the step of driving the deck in fast forward mode to return the recording start point of the tape to the initial position when the image data of the target tape section is completed in the erasing step. Automatically rewinding the recording start point of the tape to a portion where the full width erasing head is located during the recording mode operation; When the rewinding of the target tape section is completed in the rewinding step, the full width erasing head is operated and the deck is fast-forwarded to the recording start point of the tape to return the tape to the initial position. Editing control method of V-Cal comprising the step of erasing the image data existing in between.