JPH03201243A - Magnetic recording and reproducing device - Google Patents

Abstract

PURPOSE:To securely mesh a relay gear with a gear for a take-up side reel and to securely rotate the relay gear at the time of inserting a C-cassette by rotating the take-up side reel for a prescribed time at the time of a standby state of inserting a video tape to perform a take-up operation using the relay gear. CONSTITUTION:A control means 14 is provided to control the take-up side reel 17 to be rotated for a prescribed time at the time of the stand by state of inserting the video tape to perform the take-up operation using the relay gear 19. Now, when a cassette mode is under the standby state of inserting a small size video tape, the take-up side reel 17 is rotated for the prescribed time to mesh the relay gear 19 with the gear for the take-up side reel 17 in advance. By this method, at the time of inserting the video tape to perform the take-up operation using the relay gear 19, the relay gear 19 is always securely rotated, and hence the video tape can securely be taken up without slackening the tape.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a magnetic recording/reproducing apparatus for recording or reproducing a plurality of video tapes of different standards.

2. Description of the Related Art The reel unit of a conventional magnetic recording/reproducing device will be described below.

3 and 4 are a plan view and a side view of a reel section of a conventional magnetic recording/reproducing device. In FIGS. 3 and 4, the take-up reel 1 winds the video tape, and the supply reel 2 feeds out the video tape. The relay gear 3 meshes with the gear 4 of the take-up reel 1,
It rotates in conjunction with the rotation of the take-up reel 1. Also,
The relay gear 3 is provided with a spring 5 on the lower side, and is movable downward, and can also be freely disengaged from the reel gear 4 on the winding side by moving downward. 6 is a cassette mode changeover switch.

The operation of the reel unit configured as described above will be described below.

FIG. 5 is a side sectional view of the reel portion when a VHS full-size cassette (hereinafter referred to as an F cassette) is inserted. In FIG. 5, when the F cassette 7 is inserted, the bottom of the F cassette 7 presses the relay gear 3, so the spring 5 is compressed and the relay gear 3 is lowered, and the relay gear 3 is moved to the take-up reel gear 3.
The reel gear 4 is disengaged from the reel gear 4 on the winding side.

As a result, only the take-up reel 1 rotates and the relay gear 3 does not rotate. Also, when you take out the F cassette 7,
The relay gear 3 is raised by the spring 5, and as shown in FIG. 4, the relay gear 3 meshes with the take-up reel gear 4.

FIG. 6 is a side sectional view of the reel portion when a VHS compact size cassette (hereinafter referred to as a C cassette) is inserted. In FIG. 6, when the C cassette 8 is inserted, the relay gear 3 is raised by the spring 5 and meshes with the take-up reel gear 4, so when the take-up reel 1 rotates, the relay gear 3 also rotates, and the C cassette 8 is inserted. The tape on the C cassette 8 is wound up by rotating the cassette winding side gear 9.

Problems to be Solved by the Invention However, in the conventional configuration described above, when the C cassette 8 is inserted, the gear of the relay gear 3 and the gear of the take-up reel gear 4 often do not mesh with each other, and therefore, the gear of the relay gear 3 does not mesh with the gear of the take-up reel gear 4.
The C cassette 8 does not rotate and the tape of the C cassette 8 cannot be wound.

The present invention solves the above-mentioned conventional problems, and aims to provide a magnetic recording/reproducing device that can reliably rotate a relay gear when a C cassette is inserted.

Means for Solving the Problems In order to solve the above problems, the magnetic recording and reproducing apparatus of the present invention has a supply reel for feeding out a videotape, a take-up reel for winding the video tape, and a magnetic recording and reproducing apparatus that meshes with the take-up reel. The supply reel is commonly used for video tapes of different standards, and when winding a large video tape, the relay gear is removed from the take-up reel and only the take-up reel is used. The magnetic recording and reproducing apparatus performs the winding operation of a small video tape by rotating the take-up reel to rotate a relay gear meshed with the take-up reel, the relay gear The reel is provided with a control means for controlling the take-up reel to rotate for a predetermined period of time when the video tape is in a standby state for winding the video tape.

Effect With the above configuration, when the cassette mode is in the standby state for insertion of a small video tape, the take-up reel is rotated for a predetermined period of time so that the gear of the relay gear and the gear of the take-up reel are engaged in advance. When inserting a videotape that performs winding operation using a relay gear, the relay gear always rotates reliably.
To reliably wind a videotape without tape slack.

EXAMPLE Hereinafter, an example of the present invention will be described with reference to the drawings.

FIG. 1 is a control block diagram of a reel unit in a magnetic recording/reproducing apparatus according to an embodiment of the present invention. In FIG. 1, a switch state detection means 11 detects the open/closed state of a cassette mode changeover switch 12.

The cassette mode detection means 13 detects cassette modes such as F cassette mode and C cassette mode. The control means 14 performs control (a) and control (2) based on the detection results of the switch state detection means 11 and the cassette mode detection means 13. Control a is a control for switching the cassette mode by the cassette mode switching means 15 when the cassette mode switching switch 12 changes from the open state to the closed state. The control unit also causes the reel rotation means 16 to rotate the take-up reel 17 at high speed for a predetermined period of time during a videotape insertion standby state when the detection result of the cassette mode detection means 13 is the C cassette mode after switching the cassette mode. It is control. 18 is the supply side reel, 1
9 is a relay gear.

Regarding the reel control section configured as above, the following is
The operation will be explained with reference to the flowchart shown in FIG.

First, in step A1, it is checked whether the cassette mode changeover switch 12 has changed from the open state to the closed state. If there is a change, the process moves to step A2, and if there is no change, the process moves to a cassette insertion standby (hereinafter referred to as standby) state. In step A2, the cassette mode switching means 15 performs a cassette mode switching operation. This is control a. That is, here, if the previous cassette mode is the F cassette mode, the mode is changed to the C cassette mode, or if the previous cassette mode is the C cassette mode, the mode is changed to the F cassette mode. Subsequently, in step A3, the current cassette mode is determined, and if the cassette mode is the C cassette mode, the process moves to step A4, and if it is the F cassette mode, the process moves to a standby state. In step A4, the take-up reel 17 is rotated at high speed for a predetermined period of time by the reel rotating means 16, and the take-up reel 17 is moved to a standby state.

If the detection result of the cassette mode detection means 13 when the cassette mode changeover switch 12 changes from the open state to the closed state is the C cassette mode, the take-up reel 17 is rotated at high speed for a predetermined period of time, so that the C cassette When inserting, always move the relay gear 19 to the take-up reel I.
By meshing with the gear No. 7, the relay gear 19 can be reliably rotated.

Effects of the Invention As described above, according to the present invention, the cassette mode is changed from the large-sized F cassette mode to the small-sized C cassette mode, and a videotape is inserted using a relay gear for winding operation. By rotating the take-up reel for a predetermined period of time in the standby state, the gears of the relay gear and the take-up reel can be reliably engaged, and the relay gear can be reliably rotated when the C cassette is inserted. , it is possible to wind up a small cassette tape without causing the tape to sag.

[Brief explanation of drawings]

FIG. 1 is a control block diagram of a reel unit in a magnetic recording/reproducing apparatus according to an embodiment of the present invention, FIG. 2 is a flowchart showing control of the reel unit in the magnetic recording/reproducing apparatus, and FIG.
4 and 4 are a plan view and a side view of the reel section in a conventional magnetic recording/reproducing device, FIG. 5 is a side sectional view of the reel section when a full-size cassette is inserted, and FIG. 6 is a side sectional view of the reel section when a compact-size cassette is inserted. FIG. 1.17... Winding side reel, 2, 18... Supply side reel, 3.19... Relay gear, 4... Winding side reel gear, 7... F cassette, 8... C cassette, 13... Cassette mode detection means, 14... Control means, 16... Reel rotation means.

Claims (1)

[Claims] 1. It has a supply reel that sends out the video tape, a take-up reel that winds the video tape, and a relay gear that meshes with the take-up reel, and the supply reel is shared by video tapes of different standards. The winding operation of a large videotape is performed by removing the relay gear from the winding reel and rotating only the winding reel, and the winding operation of a small videotape is performed by rotating the winding reel. A magnetic recording and reproducing device is provided that performs a winding operation by rotating a relay gear meshed with a winding reel by rotating the winding reel, and the winding operation is performed for a predetermined period of time when a videotape is waiting for insertion using the relay gear. A magnetic recording/reproducing device equipped with a control means for controlling rotation of a side reel.