JPH01124136A - Rotary head type magnetic recording and reproducing device - Google Patents

Abstract

PURPOSE:To reduce the load exerted on a tape at the tape rewinding time and to reduce the electric power consumption of a reel motor, etc. by rotating a rotary drum in the reverse direction to recording and reproducing times with winding the tape on the rotary drum. CONSTITUTION:When a rewinding switch 1 is pushed, a drum motor 4 is reversed by switching the driving circuit 3 of a rotary drum by the controller 2 of a microcomputer, etc. The rewinding travel of the tape is started at about the same time or just before the start of the reversal of the drum motor 4. The rotary drum is reversed at about several times or 30 times speed compared to recording and reproducing times. The load exerted on the tape is thus reduced drastically, the tape damage accompanied by the tape traveling is also reduced and the electric power consumption of a reel motor, etc. for driving the tape traveling is reduced as well.

Description

[Detailed Description of the Invention] [Industrial Application Field] In a rotating hand type magnetic recording and reproducing device using a tape-shaped magnetic recording carrier, a magnetic recording medium which solves various problems particularly when rewinding the tape-shaped magnetic recording carrier is disclosed. The present invention relates to a recording/reproducing device.

[Summary of the invention]

A rotating head type magnetic recording and reproducing device that reduces power consumption by reducing the load on the tape running system by rotating a rotating drum at high speed in the opposite direction to that during recording and reproducing during tape rewinding.

[Conventional technology]

A typical rotary head type magnetic recording/reproducing device has the following configuration. That is, normal recording and/or playback is performed by winding a tape-shaped record carrier (hereinafter referred to as tape) fed from a supply reel around a rotating drum equipped with a magnetic head and winding it onto a take-up reel. be exposed. In such an apparatus, when rewinding the tape, the following means are known, for example. A first means is a configuration in which the tape is rewound while the tape is wound around the rotary drum. There is something to rotate. The second means is based on a structure in which the tape is mechanically separated from the rotating drum and then rewound.

In the above, the motor for driving the supply reel and/or the take-up reel is a reel motor, the motor for rotating the rotating drum is a drum motor, and the motor for rotating a capstan for driving tape running is a capstan. It is called a motor.

[Problem that the invention seeks to solve]

However, according to the conventional technology, several obstacles have arisen in reducing the size and weight of magnetic recording and reproducing devices. The first problem is that winding the tape around a rotating drum and rewinding it places a large load on the tape, which not only damages the tape, but also consumes a lot of power from the reel motor, etc. The problem arises that the size of the device increases. In particular, when reducing the diameter of the rotating drum, this problem becomes serious because the tape wrapping angle around the rotating drum increases and the tape path becomes complicated. In small-diameter rotating drums, this problem affects the power consumption of the drum motor, capstan motor, and reel motor not only during tape winding but also during recording and reproduction in order to ensure stable tape running.

The second problem is that the structure in which the tape is mechanically separated from the rotating drum and then rewound has the disadvantage that immediate rewinding and simultaneous playback and rewinding are not effective.

The present invention solves the first problem while having a configuration in which the tape is rewound while being wound around a rotating drum (resolving the second problem).

(Means for Solving the Problem) In the present invention, the above problem is solved by rotating the rotary drum in the opposite direction to that during recording and reproduction while the tape is wound around the rotary drum.

[Effect]

Since the direction in which the tape travels is the same as the rotating direction of the rotating drum, the load on the tape is significantly reduced, damage to the tape due to tape travel is also reduced, and the power consumption of the reel motor, etc. used to drive tape travel is also reduced. .

〔Example〕

An example is shown in FIG. (a) shows recording (REC), playback (PB), fast-forward playback (CUE), and rewind playback (RE).
V) shows the tape running direction and rotating drum rotation direction during fast forward (FF). (b) shows the tape running direction and rotating drum rotation direction during rewinding (REW). FIG. 2 is a block diagram showing the flow of the rewind operation.

In FIG. 1(b), when the rewind switch (1) is pressed, a controller such as a microcomputer (
2) switches the rotating drum drive circuit (3) and rotates the drum motor (4) in reverse. The rewinding of the tape begins almost at the same time or just before the time when the drum motor (4) starts to reverse. Since the rotating drum is rotated in reverse at a speed several to 30 times faster than during recording and reproduction, the load of running the tape during rewinding is extremely light.

Therefore, according to this light tape running load, Figure 1 (a)
), the running system can also be designed with stability and low power consumption by considering only the forward running of the tape and drum rotation.

(Effects of the Invention) By implementing the present invention, the load on the tape during tape rewinding is significantly reduced, making it possible to reduce the power consumption not only of the reel motor but also of the capstan motor and drum motor, thereby reducing tape running. Stabilization and tape damage are reduced.As a result, it becomes possible to realize a compact and lightweight magnetic recording/playback device that uses a small-diameter rotating drum and a small battery.

[Brief explanation of the drawing]

An example is shown in FIG. FIG. 2 is a block diagram showing the flow of the rewind operation.

Claims (1)

[Claims] In a magnetic recording and reproducing apparatus in which normal recording and/or reproduction is performed by winding a tape-shaped record carrier sent from a supply reel around a rotating drum provided with a head and winding it onto a take-up reel, the tape is When moving the record carrier wound around the rotating drum from the take-up reel to the supply reel, the rotating drum is rotated in the opposite direction to that during normal recording and/or reproduction. A rotating head type magnetic recording and reproducing device with special features.