JPH01149212A - Magnetic recording and reproducing device - Google Patents

Abstract

PURPOSE:To automatically control a use limiting time when a head cleaning tape is used by measuring a reproducing time when a tape to be used is designated to be the head cleaning tape and stopping reproducing operation when a prescribed time passes. CONSTITUTION:When the head cleaning tape is used, a head cleaning mode designating key 4 is pushed in advance and it is informed a mechanical control microcomputer 3 that the tape to be used is the head cleaning tape. When a head cleaning mode is designated, the mechanical control microcomputer 3 executes a tape traveling only for a determined time concerning the type of the head cleaning tape and after that, the traveling is stopped. Then, the operation of a deck mechanism 2 is controlled so that a head cleaning tape cassette, etc., can be swept out to an external part. Thus, only by operating the designating key 4, a user can execute the head cleaning for the prescribed time without giving attention to a cleaning time.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a magnetic recording and reproducing device that records and reproduces video signals and music signals on a recording medium on a tape using a magnetic head, and particularly relates to a configuration for head cleaning. Regarding.

[Conventional technology]

In magnetic recording and reproducing devices that record and reproduce video and music signals on a tape-shaped recording medium, if some kind of dirt such as magnetic powder from the tape adheres to the magnetic head, the image quality and sound quality of the reproduced signals will deteriorate.

In order to remove dirt on the magnetic head that causes deterioration in image and sound quality, head cleaning tapes are commercially available, and users use the head cleaning tape on a magnetic recording and reproducing device to remove dirt on the head.

[Problem that the invention seeks to solve]

Since the head cleaning tape polishes the head to remove dirt from the head, if the head cleaning tape is applied for too long, the head will be polished too much and the life of the head will be shortened. For this reason, the head cleaning tape usually has a playback time limit (for example, DAT (Digital
In the case of a cleaning tape for an audio tape-recorder, a time limit of 20 seconds) was specified, and the user had to use the head cleaning tape while being careful about the time.

On the other hand, in the manufacturing process of a magnetic recording/reproducing device, a dedicated head polishing tape is sometimes used to polish the head in order to ensure good contact between the tape and the magnetic head and to obtain sufficient reproduction output. This dedicated head polishing tape is
Since commercially available head cleaning tapes have a large surface roughness, the head must be polished to a large extent, and the time limit for use must be strictly controlled.

The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a magnetic recording/reproducing device that can automatically manage the usage time limit when using a head cleaning tape.

[Means for solving problems]

The magnetic recording and reproducing apparatus according to the present invention includes means for specifying that the tape to be reproduced from now on is a head cleaning tape, means for measuring the time during which the head cleaning tape is being reproduced, and when a predetermined time elapses, a reproducing operation is performed. and a means for stopping the operation.

[Effect]

When the magnetic recording and reproducing apparatus of the present invention specifies that the tape to be reproduced is a head cleaning tape, it measures the reproducing time and stops the reproducing operation when a predetermined period of time has elapsed.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to the drawings.

In the figure, (1) is a magnetic recording and reproducing device, (2) is a deck mechanism in which the tape is loaded and the tape is run, and (3) is a μ control microcomputer that controls the operation of the deck mechanism (2). Ash,
This is similar to a conventional magnetic recording/reproducing device.

(4) is the head cleaning mode designation key. When using the head cleaning tape, press this head cleaning mode designation key (4) in advance to
Notify the control microcomputer (3) that the tape to be played is a head cleaning tape. Mechanica μ controller μ microcomputer (
3) When the head cleaning mode is specified, the tape runs for the time specified for the type of head cleaning tape, then stops running, and automatically sweeps out the head cleaning tape cassette, etc. Controls the operation of the deck mechanism (2).

Therefore, the user can perform head cleaning for a predetermined time without paying attention to the cleaning time simply by operating the designation key (4).

In the above embodiment, a dedicated key for specifying the head cleaning mode is provided, but since head cleaning is not performed frequently, keys that are not suitable for magnetic recording/reproducing devices (for example, PLAY key, PAUSE key) are provided. The head cleaning mode may be designated by simultaneously operating two or more keys (5TOP key, 5TOP key, etc.) at the same time.

In addition, cassettes used in magnetic recording and reproducing devices are equipped with a cassette ID hole μ to distinguish the type of tape, etc., but in the future the type of tape wound inside the cassette will be When the ID hole that specifies tape has been standardized, it is now possible to specify head cleaning mode by detecting the ID hole without pressing a key to automatically switch to head cleaning mode. You can.

〔Effect of the invention〕

As described above, according to the present invention, a means for specifying a head cleaning mode is provided, and when the head cleaning mode is specified, the head cleaning tape is played for a predetermined time, then stopped, and the cleaning tape is automatically restarted. Since the head cleaning tape is swept out from the apparatus, it is possible to automatically manage the cleaning time when using a head cleaning tape or a dedicated head polishing tape.

[Brief explanation of the drawing]

The drawings are diagrams showing the configuration of an embodiment of the present invention. (1: J... Magnetic recording/reproducing device, (2)... Deck mechanism, [31... Mechanical μ controller μ microcomputer, (4)... Head cleaning mode designation key.

Claims (3)

[Claims] (1) A magnetic recording and reproducing device that records and reproduces signals on a magnetic tape housed in a cassette using a magnetic head, which includes a means for specifying a cleaning mode and a device that is installed when the cleaning mode is specified. 1. A magnetic recording and reproducing device comprising means for measuring the running time of a cleaning tape in a cassette and stopping the running operation of the cleaning tape when a predetermined time has elapsed. (2) The magnetic field according to claim 1, wherein the means for specifying the cleaning mode is configured to be specified by simultaneously operating a dedicated specifying key or a plurality of other specifying keys. Recording and playback device. (3) The magnetic recording and reproducing apparatus according to claim 1, wherein the means for specifying the cleaning mode is means for detecting an identification ID hole of a cassette containing a cleaning tape.