JPH06203308A - Magnetic recording and reproducing device - Google Patents

Abstract

PURPOSE:To enable operation by an one-system circuit at the time of selectively recording/reproducing tape cassettes of two kinds or more having respectively different tape formats by connecting a servo system circuit and a signal system circuit in one system to a cassette loading side mechanism and switching the characteristics of these connected circuits to optimum characteristics. CONSTITUTION:A 1st and 2nd tape cassettes (not shown in figure) having respectively different tape formats are loaded on a 1st and 2nd mechanisms 1, 2 and operated by a servo system circuit 7 and a signal system circuit 8 in one system and magnetic tapes are driven and scanned to record/reproduce signals. Whether the 1st cassette is loaded on the mechanism 1 or not is detected by a detecting means 3 and whether the 2nd cassette is loaded on the mechanism 2 or not is similarly detected by a detecting means 4. Then the means 3, 4 are switched by a switch 5 and the circuits 7, 8 are selectively connected to either one of the mechanisms 1, 2 so that the format is switched to optimum characteristics.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic recording / reproducing apparatus for selectively recording / reproducing two or more types of tape cassettes having different tape formats.

[0002]

2. Description of the Related Art As a conventional example of this type of magnetic recording / reproducing apparatus, for example, the one described in JP-A-57-82242 can be cited. The magnetic recording / reproducing apparatus disclosed in the publication includes two types of mechanism sections for exclusively driving and scanning tape cassettes having different tape formats, and a circuit section for operating these mechanism sections to record / reproduce signals. For example, different types of tape cassettes such as VHS system and Betamax system are recorded or reproduced by one magnetic recording / reproducing apparatus.

[0003]

By the way, the above-mentioned conventional magnetic recording / reproducing apparatus requires one circuit section for driving and operating one mechanical section, and a part of both circuit sections is made common. However, basically two circuits were required. Therefore, not only the circuit configuration becomes complicated and the cost becomes high, but also various mode switching buttons are required for each method, which causes a problem that the operability is poor for the user.

The present invention has been made in view of the circumstances of the prior art as described above, and an object thereof is to realize recording / reproducing of tape cassettes having different tape formats.
An object of the present invention is to provide a magnetic recording / reproducing apparatus which has a simple circuit configuration and is excellent in operability.

[0005]

In order to achieve the above object, the present invention provides a first tape cassette, a first mechanism for driving and scanning the magnetic tape, and a second tape cassette. And a second mechanism for driving and scanning the magnetic tape, and having different tape formats.
In a magnetic recording / reproducing apparatus for recording / reproducing more than one kind of tape cassette, one system servo circuit and signal system for selectively recording / reproducing a signal by selectively operating one of the first mechanism and the second mechanism. A circuit, detection means for detecting the mounting of the tape cassette to the first mechanism or the second mechanism, and the servo system circuit and signal system circuit of the first system based on the detection result of the detection means. A changeover switch connected to either the mechanism or the second mechanism, and a constant changeover circuit for changing the characteristics of the servo system circuit and the signal system circuit of the one system to the optimum characteristics for recording and reproducing of the tape cassette in the mounted state. Is provided.

[0006]

When the tape cassette is attached to either the first mechanism or the second mechanism, the detecting means switches the switch, and the mechanism on the side on which the tape cassette is attached and the servo system circuit of one system and The signal system circuit is connected to switch the characteristics of the servo system circuit and the signal system circuit to the optimum characteristics for recording and reproducing of the tape cassette. As a result, while having two types of mechanical units that drive and scan tape cassettes of different tape formats, these mechanical units
A servo system circuit and a signal system circuit of the system can be operated to record and reproduce a signal.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram of a magnetic recording / reproducing apparatus according to an embodiment of the present invention, in which 9 indicates a magnetic recording / reproducing apparatus, and the magnetic recording / reproducing apparatus 9 includes a first mechanism 1 and a second mechanism. 2,
It is composed of detection means 3 and 4, a switch 5, a constant switching circuit 6, a servo system circuit 7, and a signal system circuit 8.

The first mechanism 1 and the second mechanism 2 are equipped with a first tape cassette or a second tape cassette (not shown) having different tape formats, and drive and scan each magnetic tape. Which is operated by the servo system circuit 7 and the signal system circuit 8 of one system,
Record and play back signals. The detection means 3 detects that the first tape cassette is attached to the first mechanism 1, and similarly,
The detection means 4 detects that the second tape cassette is mounted on the second mechanism 2. The switch 5 is a detecting means 3, 4
The servo system circuit 7 and the signal system circuit 8 are selectively connected to either the first mechanism 1 or the second mechanism 2 by the switching operation. The constant switching circuit 6 switches the characteristics of the servo system circuit 7 and the signal system circuit 8 to the optimum characteristics for the tape format of the first or second tape cassette in the mounted state.

The magnetic recording / reproducing apparatus 9 having the above structure
In, when the first tape cassette is mounted at a predetermined position of the first mechanism 1 corresponding to the first tape cassette,
The detection means 3 connected to the first mechanism 1 detects that the first tape cassette is in the mounted state, and based on the detection result, the switch 5 has the servo system circuit 7 and the signal system circuit 8 of one system. Switch to the side connected to the first mechanism 1. The characteristics of the servo system circuit 7 and the signal system circuit 8 are switched by the constant switching circuit 6 to the characteristics corresponding to the tape format of the first tape cassette.
The signal system circuit 8 is in an optimum state for recording / reproducing on the first tape cassette, and is in a state capable of recording / reproducing on the first tape cassette.

On the other hand, when a second tape cassette having a tape format different from that of the first tape cassette is mounted at a predetermined position of the second mechanism 2 corresponding to the second tape cassette, when the first tape cassette is mounted Similarly, the detection means 4 detects that the second tape cassette is in the mounted state, and the servo system circuit 7 and the signal system circuit 8 of the switch 5 are connected to the second mechanism 2 based on the detection result. Switch to the side to be done. Further, the characteristics of the servo system circuit 7 and the signal system circuit 8 are switched to the characteristics corresponding to the tape format of the second tape cassette by the constant switching circuit 6,
The servo system circuit 7 and the signal system circuit 8 are in an optimum state for recording / reproducing on the second tape cassette, and are in a state capable of recording / reproducing on the second tape cassette.

As described above, the magnetic recording / reproducing apparatus 9 has the first mechanism 1 and the second mechanism 2 for driving and scanning the dedicated magnetic tapes for the tape cassettes of different tape formats. After mounting the first tape cassette on the first mechanism 1, the second tape cassette can be mounted on the second mechanism 2 without ejecting the first tape cassette. At that time, the switch 5 and the constant switching circuit 6 may continue to be switched to the side of the first tape cassette previously mounted, and when the second tape cassette is mounted on the second mechanism 2, It may be switched to the second tape cassette side, and these can be arbitrarily selected. Further, when the switch 5 and the constant switching circuit 6 are selected so as to continue in a state where they are switched to the side of the first tape cassette previously mounted, when the recording / reproducing of the first tape cassette is performed, the magnetic tape is When the end is reached, the switch 5 and the constant switching circuit 6 are switched to the second tape cassette side so that the operation at the time of the first tape cassette is continued, or the magnetic tape reaches the end. The operation may be terminated at the stage where the above is done, and these can also be set arbitrarily. The case where the second tape cassette is mounted on the second mechanism 2 after the first tape cassette is mounted on the first mechanism 1 has been described above, but the second tape cassette is mounted in the reverse order. Even when the is attached first, the same correspondence can be set.

In the above embodiment, since the first mechanism 1 and the second mechanism 2 for driving and scanning each tape cassette for exclusive use are provided, two types of tape cassettes having different tape formats, for example, the VHS system are used. The tape cassette and the 8 mm video tape cassette can be selectively recorded / reproduced by one magnetic recording / reproducing apparatus. Also,
Since the first mechanism 1 and the second mechanism 2 are operated by the servo system circuit 7 and the signal system circuit 8 of one system to record and reproduce signals, not only the circuit configuration can be simplified but also the mode can be improved. Various operation buttons for switching can be shared, and operability can be improved.

FIG. 2 is a block diagram of a magnetic recording / reproducing apparatus according to another embodiment of the present invention. In FIG. 2, reference numeral 12 denotes a magnetic recording / reproducing apparatus adapter, and parts corresponding to those in FIG. There is.

The magnetic recording / reproducing device adapter 12 comprises a servo system circuit 10 and a signal system circuit 11,
The magnetic recording / reproducing apparatus 9 shown in FIG. 1 is externally connected. This magnetic recording / reproducing device adapter 1
In a state in which 2 is connected to the magnetic recording / reproducing apparatus 9, the switch 5 and the constant switching circuit 6 provided in the magnetic recording / reproducing apparatus 9 are switched to the first tape cassette side, and the first tape cassette is mounted. The mechanism 1 is operated by the servo system circuit 7 and the signal system circuit 8 in the magnetic recording / reproducing apparatus 9. In addition, the second mechanism 2 in which the second tape cassette is mounted is the magnetic recording / reproducing device adapter 12
Connected to the servo system circuit 10 and the signal system circuit 11 inside,
The servo system circuit 10 and the signal system circuit 11 are operated. Therefore, the first mechanism 1
The second mechanism 2 and the second mechanism 2 can arbitrarily select and set different operations such as recording and reproducing.

In the embodiment constructed as described above,
Since the first tape cassette mounted on the first mechanism 1 and the second tape cassette mounted on the second mechanism 2 can be recorded or reproduced at the same time, editing between tape cassettes having different tape formats is easy. Can be done. In the above embodiment, the first mechanism 1 is operated by the servo system circuit 7 and the signal system circuit 8 in the magnetic recording / reproducing device 9, and the second mechanism 2 is operated by the magnetic recording / reproducing device adapter 12.
The case where it is operated by the servo system circuit 10 and the signal system circuit 11 has been described. On the contrary, the second mechanism 2 is operated by the servo system circuit 7 and the signal system circuit 8 in the magnetic recording / reproducing apparatus 9. , The first mechanism 1 is the servo system circuit 10 and the signal system circuit 11 of the magnetic recording and reproducing device adapter 12.
It is also possible to operate by, and in that case, the same effect can be obtained.

[0016]

As described above, according to the present invention,
A first mechanism and a second mechanism for exclusively driving and scanning tape cassettes having different tape formats are provided, and signals are obtained by switching the connection between these two types of mechanism parts and one system servo system circuit and signal system circuit. Since different types of tape cassettes can be recorded / reproduced by a single magnetic recording / reproducing device without complicating the circuit configuration, various operation buttons for mode switching can be shared. , The operability can be improved. Further, when the magnetic recording / reproducing device adapter is connected from the outside, the first tape cassette mounted in the first mechanism and the second tape cassette mounted in the second mechanism can be simultaneously recorded or reproduced. Therefore, editing between tape cassettes having different tape formats can be easily performed.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a magnetic recording / reproducing apparatus according to an embodiment of the present invention.

FIG. 2 is a configuration diagram when a magnetic recording / reproducing device adapter is connected to the outside of the magnetic recording / reproducing device of FIG.

[Explanation of symbols]

 1 1st mechanism 2 2nd mechanism 3,4 Detection means 5 Switch 6 Constant switching circuit 7,10 Servo system circuit 8,11 Signal system circuit 9 Magnetic recording / reproducing device 12 Magnetic recording / reproducing device adapter

Claims (2)

[Claims] 1. A first mechanism (1) for mounting a first tape cassette and driving and scanning the magnetic tape, and a second mechanism for mounting a second tape cassette and driving and scanning the magnetic tape. In the magnetic recording / reproducing apparatus for recording / reproducing two or more types of tape cassettes having different tape formats, one of the first mechanism (1) and the second mechanism (2) is provided. Servo system circuit (7) and signal system circuit (8) for selectively operating and recording / reproducing signals, and mounting of a tape cassette on the first mechanism (1) or the second mechanism (2) Detecting means (3, 4) for detecting the above, and the servo system circuit (7) and signal system circuit (8) of the one system based on the detection result of the detecting means (3, 4). Connected to either 1) or the second mechanism (2) Changeover switch (5)
And a constant switching circuit (6) for switching the characteristics of the servo system circuit (7) and the signal system circuit (8) of the one system to the optimum characteristics for recording and reproduction of the tape cassette in the mounted state. And a magnetic recording and reproducing device. 2. The magnetic recording / reproducing apparatus adapter (12) according to claim 1, wherein a magnetic recording / reproducing device adapter (12) having a second servo system circuit (10) and a second signal system circuit (11) is connectable from the outside. Magnetic recording / reproducing, characterized in that either the first mechanism (1) or the second mechanism (2) is operated by the second servo system circuit (10) and the second signal system circuit (11). apparatus.