JP2000090521A - Video deck - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a video deck capable of using the search function while preventing a video tape from deforming even during the fast forwarding/ rewinding operation. SOLUTION: When only a loading arm 71 at the supply side is moved downward in the case of shifting to the fast forwarding or the rewinding operation from the recording/reproducing operation, the video tape A at the side of a supply reel 20 guided by a tape guide post 71d is separated away from a head cylinder 50, but since the video tape A at the side of a take-up reel 30 becomes the state kept in contact with a control head 60 as it is by the tape guide post 72d, the use of the search function is attained while preventing the deformation of the video tape.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a video deck.

[0002]

2. Description of the Related Art As a conventional video deck, there is Japanese Utility Model 62
2. Description of the Related Art A video deck to which a music selection mechanism disclosed in Japanese Patent Application No. 186288 is applied is known. In this VCR,
At the beginning and end of the fast-forward / rewind operation, the video tape is brought into contact with the head cylinder and the control head to detect the tape position and run at high speed as in the recording / reproducing operation. The video tape is moved at high speed away from the head cylinder and the control head.

[0003]

The above-mentioned conventional video deck has the following problems. Fast forward /
At the beginning and end of the rewinding operation, there are many portions where the video tape comes into contact with the head cylinder, and there is a possibility that a force is applied to the video tape to extend it. On the other hand, a search function such as a blank search could not be used during the fast-forward / rewind operation because the video tape was separated from the control head. Therefore, during the fast-forward / rewind operation, the search function could not be used while preventing deformation of the video tape. The present invention has been made in view of the above problems, and has as its object to provide a video deck which can use a search function while preventing deformation of a video tape even during fast-forward / rewind operations.

[0004]

In order to achieve the above object, according to the first aspect of the present invention, there is provided a head cylinder for recording and reproducing a video signal by contacting a video tape, and winding the video tape on a supply reel. A tape drive mechanism that runs between the reel and a control head that is disposed between the head cylinder and the take-up reel and records and reproduces a control signal while contacting the video tape; A supply-side loading arm capable of guiding the video tape to contact the head cylinder, and a winding capable of guiding the video tape to contact the head cylinder and the control head from the take-up reel side; The loading side loading arm and the supply side loading arm at the time of recording / playback While arranging, the take-up loading arm is arranged on the side of the head cylinder and the control head so that the video tape is brought into contact with the head cylinder and the control head. A loading arm driving means for disposing the take-up side loading arm on the side of the head cylinder and the control head while separating from the head cylinder and bringing the video tape into contact with the control head is provided.

[0005] In the invention according to claim 1 configured as described above, the loading arm driving means arranges the supply side loading arm on the side of the head cylinder during the recording / reproducing operation while loading the winding side loading arm. The arm is arranged on the side of the head cylinder and the control head, and the video tape is brought into contact with the head cylinder and the control head. At this time, when the tape drive mechanism moves the video tape between the supply reel and the take-up reel, the head cylinder performs recording / reproduction of a video signal with the video tape, and the control head Performs recording / reproduction of a control signal with the video tape. Further, the loading arm driving means arranges the winding side loading arm on the side of the head cylinder and the control head while separating the supply side loading arm from the head cylinder at the time of fast-forward and rewind operations, and To the control head. At this time, when the tape driving mechanism causes the video tape to run at high speed between the supply reel and the take-up reel, the control head records and reproduces a control signal with the video tape.

The head cylinder may be of a type that performs recording and reproduction of a video signal by bringing a video tape into contact with the head cylinder. The head cylinder is formed in a substantially columnar shape. It may be one that performs re-processing. The tape drive mechanism may be one that allows the video tape to travel between a supply reel and a take-up reel, and a supply reel coupled to a drive motor that can be rotationally driven based on a drive instruction from a system controller. It may be one that rotates a take-up reel. The control head only needs to be disposed between the head cylinder and the take-up reel and perform recording / reproduction of a control signal while making contact with the video tape. And the recording / reproduction of the control signal, and the recording / reproduction of the control signal with the video tape running at the time of the fast-forward or rewind operation. The supply-side loading arm only needs to be able to guide and contact the video tape from the supply reel to the head cylinder, and the winding-side loading arm is connected to the head cylinder from the winding reel. What is necessary is just to be able to guide and contact the video tape with the control head. Therefore, each loading arm may be movably supported between the side of the cylinder head or control head and the side of the video tape cassette in which the video tape is stored. The loading arm drive means arranges the take-up loading arm on the head cylinder and control head sides while disposing the supply-side loading arm on the head cylinder side during the recording / reproducing operation, and holds the video tape together. The video is obtained by contacting the head cylinder and the control head, and disposing the supply-side loading arm from the head cylinder during the fast-forward and rewind operations while disposing the winding-side loading arm on the head cylinder and the control head. As long as the tape can be brought into contact with the control head, the tape may be switched from a recording / reproducing operation to a fast-forward or rewind operation, or may be transitioned from a stopped state to a recording / reproducing operation, a fast-forward or rewind operation. And so on.

As an example of the structure of the loading arm driving means in the former case, the invention according to claim 2 is as follows.
2. The video deck according to claim 1, wherein the loading arm driving means arranges the take-up loading arm on the side of the head cylinder and the control head when the recording / reproducing operation shifts to a fast-forward or rewind operation. The supply-side loading arm is configured to be separated from the head cylinder while keeping the same. In the invention according to claim 2 configured as described above, when shifting from the recording / reproducing operation to the fast-forward operation, or when shifting from the recording / reproducing operation to the rewinding operation, the loading arm driving unit is configured to perform the winding operation. The supply-side loading arm is separated from the head cylinder while the side loading arm is arranged on the side of the head cylinder and the control head. The loading arm driving means may drive the loading arm only by a mechanical structure in which a cam mechanism, a gear mechanism, and the like are connected to the driving motor, or a microcomputer may be connected to the driving motor. The loading arm may be driven while being controlled by a microcomputer.

[0008]

As described above, the present invention provides a fast forward /
A video deck capable of using the search function while preventing the video tape from deforming because the video tape is brought into contact with the control head while reducing the contact portion between the video tape and the head cylinder during the rewind operation. it can. According to the second aspect of the present invention, the control signal can be recorded / reproduced continuously from the recording / reproducing operation even in the case of the fast-forward or rewind operation.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic diagram showing a configuration of a tape mechanism provided in a video deck according to an embodiment of the present invention.

The tape mechanism 10 includes a supply reel 20 for supplying the video tape A, a take-up reel 30 for winding the video tape A, a capstan 40 for running the video tape A at a predetermined speed during a recording / reproducing operation, A head cylinder 50 for recording / reproducing a video signal with the tape A, a control head 60 for recording / reproducing a control signal with the video tape A, and a video signal from the supply reel 20 and the take-up reel 30 A pair of loading arms 70 that move between the loading position of the video tape cassette and the head cylinder 50 and the control head 60 while guiding the tape A are provided. With this configuration, when the video tape cassette is loaded, the loading arm 70
Moves from the supply reel 20 side and the take-up reel 30 side to the head cylinder 50 and the control head 60, and attaches the video tape A to the head cylinder 50 and the control head 60. When a recording / reproduction instruction is issued from a system controller (not shown), the video tape A is supplied to the supply reel 2.
The video signal is recorded and reproduced by the head cylinder 50 from the control head 6 to the take-up reel 30 side.
The control signal is recorded / reproduced by 0.

The supply reel 20 and the take-up reel 30 are connected to a drive motor (not shown) via a gear mechanism or the like, and upon receiving a drive instruction from the system controller, supply the video tape A at a normal speed during recording / reproduction. During the winding, fast-forwarding and rewinding operations, the video tape A is supplied and wound at a high speed. In this sense, the supply reel 20 and the take-up reel 30
Constitutes a tape drive mechanism according to the present invention. The capstan 40 is disposed on the take-up reel 30 side of the head cylinder 50 and the control head 60 so as to face the pinch roller 41.
The video tape A is fed at a predetermined speed while sandwiching the video tape A between the video tape A and the video tape A, and is separated from the pinch roller 41 at the time of fast-forward and rewind operations to stop the feeding operation. The head cylinder 50 is connected to the system controller while being formed in a substantially columnar shape, and performs recording and reproduction of a video signal by causing the video tape A to run while being in contact with the circumferential surface. The control head 60 has a head surface disposed so as to face the running track of the video tape A, and records and reproduces a control signal by contacting the running video tape A.

The loading arm 70 is connected to the supply reel 2.
The supply side loading arm 71 movably supported between the head cylinder 50 side and the video tape cassette loading position side on the 0 side, and the head cylinder 50 and control head 60 side on the take-up reel 30 side. And a take-up loading arm 72 movably supported between the loading position and the loading position. With this configuration, during the recording / reproducing operation, the supply-side loading arm 71 is arranged on the head cylinder 50 side, the winding-side loading arm 72 is arranged on the head cylinder 50 and control head 60 sides, and the video tape A is moved to the head cylinder 50. 5
0 and the control head 60. During the fast-forward and rewind operations, the supply-side loading arm 71 is arranged on the loading side of the video tape cassette, and the winding-side loading arm 72 is arranged on the head cylinder 50 and control head 60 sides. Is brought into contact with the control head 60 and is separated from the head cylinder 50. As shown in FIG. 2, each loading arm 71, 72 is rotatably supported at one end and connected to drive motors 71b, 72b via belt mechanisms 71a, 72a.
c and 72c, and second arms 71e and 72e having one end rotatably supported at the other end of the first arm 71c and 72c and the other end provided with tape guide posts 71d and 72d for guiding the video tape A. It has. The tape guide posts 71d and 72d are inserted into guide grooves 71f and 72f formed in a chassis (not shown).
It moves up and down according to the guide grooves 71f and 72f. With this configuration, the drive motor 71b,
When a recording / reproducing instruction is input to 72b, the drive motor 71b rotates clockwise, rotates the first arm 71c clockwise, and moves the second arm 71e upward. On the other hand, the drive motor 72b also rotates counterclockwise to rotate the first arm 72b.
c is rotated counterclockwise to move the second arm 72e upward.

As shown in FIG. 3, each drive motor 71b,
72b, and gradually rotate each tape guide post 71.
When d and 72d are moved upward to reach the upper portions of the guide grooves 71f and 72f, as shown in FIG. 4, the video tape A guided to the tape guide posts 71d and 72d becomes
As shown in FIG. 1, it comes into contact with the head cylinder 50 and the control head 60. Here, for example, when a fast-forward instruction is input from the system controller to the drive motors 71b and 72b, only the drive motor 71b rotates counterclockwise to rotate the first arm 71c counterclockwise, and the second arm 71e Is moved downward. Then, as shown in FIGS. 5 and 6, the fast-forward operation is performed in a state where the tape guide posts 71d and 72d have moved to the lower part. Therefore, although the control signal can be recorded / reproduced by the control head 60 as in the case shown in FIG. 7, when the fast-forward operation is performed with the supply-side loading arm 71 arranged on the head cylinder 50 side. In comparison, since the contact portion of the video tape A with the head cylinder 50 is small, the extension of the video tape A can be prevented. In the present embodiment, the case where fast forward is performed has been described. However, the present invention can also be applied to the case where rewind is performed similarly. Further, the case where fast-forward is performed during the recording / reproducing operation has been described, but the invention is not necessarily limited to the fast-forward operation during the recording / reproducing operation, and the same can be applied to a fast-forward operation from a stop. .

Next, the operation of the tape mechanism according to this embodiment will be described. The drive motors 71b, 7
When the recording / reproducing instruction is given to 2b, the drive motor 71b rotates clockwise to rotate the first arm 71c clockwise and move the second arm 71e upward. On the other hand, the drive motor 72b also rotates counterclockwise, rotates the first arm 72c counterclockwise, and moves the second arm 72e upward. Then, the video tape A guided to the tape guide posts 71d and 72d contacts the head cylinder 50 and the control head 60. Based on the instruction from the system controller, the supply reel 20 supplies the video tape at a normal speed, and the take-up reel 30 takes up the video tape A. The capstan 40 sandwiches the video tape A between the pinch roller 41 and the supplied video tape A.
At a predetermined speed, the head cylinder 50 records and reproduces a video signal with the video tape A, and the control head 60 records and reproduces a control signal with the video tape A. When a fast-forward instruction is output from the system controller, only the drive motor 71b rotates counterclockwise to rotate the first arm 71c counterclockwise and move the second arm 71e downward. Then, the video tape A guided to the tape guide post 71d is separated from the head cylinder 50, but remains in contact with the control head 60 by the tape guide post 72d. With the pinch roller 41 separated from the capstan 40, the supply reel 20 supplies the video tape A at a high speed, and the take-up reel 30 takes up the video tape A. As described above, when the recording / reproducing operation is shifted to the fast-forward or rewind operation, if only the supply-side loading arm 71 is moved downward, the video tape A on the supply reel 20 side guided by the tape guide post 71d is moved to the head. Although separated from the cylinder 50, the video tape A on the take-up reel 30 remains in contact with the control head 60 by the tape guide post 72d, so that the search function can be used while preventing deformation of the video tape. It becomes possible.

[Brief description of the drawings]

FIG. 1 is a schematic diagram illustrating a configuration of a tape mechanism according to an embodiment.

FIG. 2 is a schematic diagram illustrating a schematic configuration of a loading arm when stopped.

FIG. 3 is a schematic diagram showing a schematic configuration of a loading arm during driving.

FIG. 4 is a schematic diagram showing a schematic configuration of a loading arm during a recording / reproducing operation.

FIG. 5 is a schematic diagram illustrating a configuration of a tape mechanism during a fast-forward operation.

FIG. 6 is a schematic diagram showing a schematic configuration of a loading arm.

FIG. 7 is a schematic diagram showing a situation where fast-forwarding is performed at the position of a loading arm during recording / reproducing operation.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Tape mechanism 20 ... Supply reel 30 ... Take-up reel 40 ... Capstan 41 ... Pinch roller 50 ... Head cylinder 60 ... Control head 70 ... Loading arm 71 ... Supply side loading arm 72 ... Winding side loading arm 71a, 72a ... Belt mechanism 71b, 72b Drive motor 71c, 72c First arm 71d, 72d Tape guide post 71e, 72e Second arm 71f, 72f Guide groove A Video tape

Claims (2)

[Claims] 1. A head cylinder for recording and reproducing a video signal by contacting a video tape, a tape driving mechanism for moving the video tape between a supply reel and a take-up reel, and a head cylinder and a take-up A control head disposed between the reel and a recording tape for recording and reproducing a control signal while contacting the video tape; and a supply side loading capable of guiding the video tape from the supply reel to the head cylinder to make contact therewith. An arm, a take-up loading arm capable of guiding the video tape from the take-up reel to the head cylinder and the control head, and bringing the video tape into contact therewith; during a recording / reproducing operation, the supply-side loading arm is connected to the head cylinder. The winding side loading arm is placed in the same head cylinder and And the video tape is brought into contact with the head cylinder and the control head while the supply side loading arm is separated from the head cylinder during fast-forward and rewind operations. A video deck comprising: a loading cylinder driving means disposed on a side of a head cylinder and a control head for bringing the video tape into contact with the control head. 2. The video deck according to claim 1, wherein the loading arm driving means moves the take-up loading arm to the head cylinder and the control head when shifting from a recording / reproducing operation to a fast-forward or rewind operation. A video deck, wherein the supply-side loading arm is separated from the head cylinder while being placed on the side of the VCR.