JPH0636538A - Reproducing adapter for small-sized cassette - Google Patents

Abstract

PURPOSE:To simplify the reproduction by detecting the rotation of reel bases and a capstan, provided at the adapter when a tape recorder is attached with the adapter and is turned into a play mode, rotating a built-in tape based on a result of this detection and also transmitting signal recording information to the recorder. CONSTITUTION:The small-sized cassette 2 is loaded into the reproducing adapter for the small-sized cassette, which is provided with a reel motor for rotating the built-in magnetic tape, an output head 8 for transmitting the signal recording information recorded on the tape to the tape recorder, a reproducing head 7, rotation detectors 17 and 18 for detecting the rotation of one pair of reel bases and a rotation detector 25 for detecting the rotation of the capstan 19. Based on detected results from the detectors 17, 18 and 25 in such constitution, the signal recording information of the tape built in the cassette 2 is reproduced. That is, the detected results are sent via a rotation detecting part 32 to a CPU 33, and only when rotating information from the capstan 19 and one pair of reel hubs 10 and 11 is obtained, reproducing operation is carried out.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stamp-sized small cassette used in a digital tape recorder having a very small size and high sound quality, which is capable of digital recording / reproducing by adopting so-called non-tracking reproducing system and non-loading system. , A novel small cassette playback adapter that can be played back on an analog tape recorder.

[0002]

2. Description of the Related Art Heretofore, the applicant of the present application has proposed a digital tape recorder having a very small size and a high sound quality, which is capable of digital recording / reproduction by employing a so-called non-tracking reproduction system and a non-loading system.

Such a digital tape recorder has a vertical,
The width and thickness are 30 × 21.5 × 5 (Unit: mm)
For a vapor-deposited tape with a tape width of 2.5 mm that is rotatably stored in a postage stamp-sized ultra-small cassette, stereo audio can be digitally transmitted for a long time (1 round trip by using both sides).
20 minutes) It is configured to record / reproduce.

Further, the above digital tape recorder is
By adopting the so-called non-tracking reproduction system and non-loading system, a loading mechanism is unnecessary, and for example, the vertical, horizontal, and thickness are 113 × 55 × 2, respectively.
It has an extremely small size of 3 (unit: mm).

[0005]

By the way, the stamp size ultra-small cassette as described above is directly converted into an analog such as a radio cassette deck or a car stereo deck for a vehicle without using the digital tape recorder. It would be very convenient if it could be played on the tape recorder of, and its development is required.

Therefore, the present invention has been proposed in view of the above-mentioned conventional technical problems, and it is possible to directly reproduce a small cassette with an analog tape recorder. The purpose is to provide an adapter.

[0007]

A reproducing adapter for a small cassette according to the present invention comprises a tape rotation drive mechanism for mounting a small cassette and rotating a magnetic tape contained in the small cassette, and a magnetic tape for the small cassette. Signal transmitting means for transmitting the signal recording information recorded on the tape recorder to the tape recorder, a reel base rotation detecting means for detecting the rotation of the pair of reel bases of the tape recorder, and a cap for detecting the rotation of the capstan of the tape recorder. Stan rotation detecting means is provided, and the signal record information of the magnetic tape contained in the small cassette is reproduced based on the detection results from the reel base rotation detecting means and the capstan rotation detecting means.

The signal transmitting means includes a reproducing head for reproducing the signal recording information recorded on the magnetic tape contained in the small cassette, and an output head for transmitting the reproducing signal from the reproducing head to the magnetic head of the tape recorder. Become.

Then, the reproducing adapter for the small cassette is provided with a power supply section for driving the tape rotation drive mechanism and the signal transmission means.

[0010]

In the reproducing adapter for the small cassette according to the present invention, when the small cassette is attached to the adapter and the adapter is attached to the tape recorder to set the play mode,
Based on the detection results from the reel base rotation detecting means and the capstan rotation detecting means provided in the adapter, the magnetic tape contained in the small cassette is rotated and the signal recording information recorded on the magnetic tape is recorded. The signal is transmitted to the tape recorder and reproduced by the signal transmitting means.

Further, in the reproducing adapter for a small cassette according to the present invention, the tape rotation drive mechanism for driving the magnetic tape contained in the small cassette and the signal recording information recorded on this magnetic tape are transmitted to the tape recorder. Since the power supply unit for driving the signal transmission means is provided, reproduction can be performed only by mounting such an adapter on the tape recorder.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Specific embodiments to which the present invention is applied will be described in detail below with reference to the drawings. As shown in FIG. 1, the reproducing adapter 1 for a small cassette of this embodiment is an ultra-compact and high-quality digital tape recorder capable of digital recording / reproducing by adopting a so-called non-tracking reproducing system and a non-loading system. The small stamp-sized cassette 2 used can be reproduced by an analog tape recorder.

First, a small cassette 2 mounted on the reproducing adapter 1 for the small cassette and the small cassette 2
A digital tape recorder for mounting and reproducing will be briefly described. Digital tape recorders are
The width and thickness are 30 × 21.5 × 5 (Unit: mm)
It is possible to record / reproduce stereo sound digitally for a long time (120 minutes round trip) using both sides of a magnetic tape made by vapor deposition with a tape width of 2.5 mm that is rotatably housed in a stamp size ultra-small cassette. It is composed of. Further, this digital tape recorder does not require a loading mechanism by adopting the so-called non-tracking reproduction system and non-loading system. For example, the vertical, horizontal and thickness are 115 × 50 each.
It has an extremely small size of x21 (unit: mm).

In the non-tracking reproduction method, each track data is recorded in blocks, such as 100 pieces, and the recorded tracks are not traced in a one-to-one manner at the time of reproduction, but the number of rotations of the rotary head drum is predetermined. And double density scanning is performed. At this time, in consideration of tilting of the reproducing head trace with respect to the track due to mechanical accuracy or the like, tracing is performed several times so as to overlap the recording track. As a result, all necessary reproduction data are extracted. Since the reproduced data at this time may be reproduced across the tracks, it does not follow the original order, so the semiconductor memory rearranges these reproduced data in the correct order according to the address. By performing these in order for each track, faithful reproduction is realized.

On the other hand, in the non-loading system, the tape is not pulled out from the cassette 2 at all, and a micro rotary drum having a diameter of 14.8 mm and having a magnetic head is pushed into the cassette 2 through the front opening. , A method of forming a tape path. For example, in a video tape recorder or the like, it is necessary to faithfully trace the playback track, so a highly accurate loading mechanism is indispensable, but in such a non-tracking playback method, the vertical guide and tilt that were conventionally on the mechanical side were used. By providing the tape guide in the cassette 2 with the function of the pin, the tape path can be formed only by protruding the drum into the cassette 2, and a complicated loading mechanism can be eliminated. Therefore, there is an advantage that the tape recorder can be significantly reduced in size and weight.

Next, a reproduction adapter 1 for a small cassette (hereinafter, simply referred to as an adapter 1) to which the small cassette 2 is attached will be described. Such an adapter 1 is composed of a cassette 5 in which a pair of upper and lower halves 3 and 4 having substantially the same shape and size as a compact cassette mounted on a normal tape recorder are butted and coupled. This cassette 5
A cassette mounting portion for mounting the small cassette 2 is provided inside. The cassette mounting portion has a cassette holder 6 on the back side of the cassette 5, which is rotatable with respect to the cassette 5 in the direction of arrow A in FIG. 1, and the small cassette 2 is mounted therein. ing. Also,
The cassette mounting portion is provided with a tape rotation drive mechanism (not shown) for rotationally driving the magnetic tape contained in the small cassette 2. The tape rotation drive mechanism is, for example, a reel motor that engages with a pair of reel hubs built in the small cassette 2.

Further, in the cassette 5, there is provided a signal transmitting means for transmitting the signal recording information recorded on the magnetic tape contained in the small cassette 2 to the tape recorder. As shown in FIG. 2, the signal transmission means includes a reproducing head 7 for reproducing the signal record information recorded on the magnetic tape contained in the small cassette 2, and the reproducing head 7.
The output head 8 transmits the reproduction signal from the magnetic head of the tape recorder. The reproducing head 7 is composed of a magnetic head for reading digital signal recording information which is mounted on the digital tape recorder described above, and includes a lower half 4
2 is provided on one end side of a head base 9 which is slidable in the direction of arrow B in FIG. On the other hand, the output head 8 converts the digital signal recording information read by the reproducing head 7 into analog signal recording information by a D / A converter (not shown), and then transfers this analog signal recording information to the magnetic head on the tape recorder side. It is something to convey. The output head 8 is provided on the front side of the cassette 5 that faces the magnetic head provided on the tape recorder side. The D / A converter is provided on the head base 9.

In the cassette 5, a pair of reel hubs 10 and 11 into which a pair of reel stands provided in a tape recorder are fitted and engaged are rotatably provided. The reel hubs 10 and 11 are provided with a pair of guide rollers 1 that are rotatably provided at predetermined intervals.
The rubber belts 14 formed in an annular shape, which are hung on the belts 2 and 13, rotate in synchronization with each other. That is, the connecting belt 1 is provided over the reel hubs 10 and 11 and the guide rollers 12 and 13 facing the reel hubs 10 and 11, respectively.
When reels 5 and 16 are hooked, one reel hub 1
The rotation of 0 is transmitted to the other reel hub 11. As a result, one reel hub 10 and the other reel hub 11 rotate in synchronization.

The reel hubs 10 and 11 are provided with reel base rotation detecting means for detecting the rotation of the reel hubs 10 and 11 (rotation of the reel base). The reel base rotation detecting means, as shown in FIG.
It comprises a rotation detection pattern 28 (one pattern is not shown) formed on each reel hub 10, 11, and rotation detectors 17, 18 for reading this pattern 28. The pattern 28 is, for example, the connecting belts 15 and 16
It is formed on the outer peripheral surfaces of the reel hubs 10 and 11 which are not hooked. The rotation detectors 17 and 18 are provided at positions separated from the reel hubs 10 and 11 by a predetermined distance so as to face the pattern 28.

Further, in the cassette 5, the capstan 19 of the tape recorder inserted in the cassette 5 is inserted.
Is provided with a capstan rotation detecting means for detecting the rotation of the. The capstan rotation detecting means includes a pair of tape supporting rollers 2 by means of a capstan 19 inserted into the cassette 5 and a pinch roller 20 pressed against the capstan 19.
The rotation detecting tape 23 that runs between the first and second parts, the rotation detecting roller 24 that rotates in contact with the rotation detecting tape 23, and the rotation detecting pattern formed on the peripheral surface of the rotation detecting roller 24. And a rotation detector 25 for reading 29.

The rotation detecting tape 23 is used for the cassette 5
1 which is hung between a pair of tape supporting rollers 21 and 22 rotatably supported on the front side of each of the tape supporting rollers and is inserted into the cassette 5.
9 and the pinch roller 20 make it run. The output head 8 comes into contact with the rotation detecting tape 23 from the back side thereof. The rotation detecting roller 24 is rotatably provided at a position close to one of the tape supporting rollers 22, and is in contact with the rotation detecting tape 23 running on the back side of the cassette 5 when viewed from the front side. Has become. On the peripheral surface of the rotation detecting roller 24, as shown in FIG.
A rotation detection pattern 29 (one pattern is not shown) is formed in a portion that does not contact the rotation detection tape 23. The rotation detector 25 is provided at a position separated from the rotation detection roller 24 by a predetermined distance so as to face the pattern 29.

Further, in the cassette 5, a power supply section 26 for driving the tape rotation drive mechanism and the signal transmission means is provided.
Is provided. The power supply unit 26 is composed of, for example, a battery having a capacity sufficient to drive the tape rotation drive mechanism and the signal transmission means, and is for opening and closing the power supply in the direction of arrow C in FIG. When the lid 27 is opened, it is inserted into the cassette 5.

Next, the operation of mounting the small cassette 2 on the adapter 1 constructed as described above, mounting it on the tape recorder, and reproducing it will be described. The reproduction operation will be described with reference to the flowchart shown in FIG. 4 and the circuit diagram shown in FIG. First,
As shown in FIG. 1, the small cassette 2 is replaced with a cassette holder 6
To insert. Then, the cassette holder 6 is closed and the small cassette 2 is mounted at a predetermined cassette mounting position. Then, the reel motors 30 and 31 are fitted and engaged with the reel hubs incorporated in the small cassette 2.

Then, in this state, the adapter 1 is mounted on the tape recorder. Then, press the playback mode button on the tape recorder. Then, the capstan 19 and the pinch roller 20 of the tape recorder are inserted into the cassette 5 of the adapter 1, and the capstan 19 and the pinch roller 20 cause the rotation detecting tape 23 to run.

As a result, the rotation detecting roller 24 provided in contact with the rotation detecting tape 23 rotates, and the pattern provided on the rotation detecting roller 24 is read by the rotation detector 25 facing the rotation detecting roller 24. The rotation information (rotation speed, rotation direction, etc.) of the rotation detection roller 24 is detected. Since the rotation detection roller 24 and the capstan 19 rotate in synchronization with each other, the rotation information corresponds to the rotation information of the capstan 19.

At the same time, the reel base of the tape recorder is fitted into and engaged with the reel hubs 10 and 11 of the adapter 1, and the reel hubs 10 and 11 are rotated in synchronization by the rubber belt 14. As a result, the patterns provided on the reel hubs 10 and 11 are read by the rotation detectors 17 and 18 which face the reel hubs 10 and 11, respectively, and the rotation information (rotation number and rotation direction) of the reel hubs 10 and 11 is detected. The reel hub 10,
Since 11 and the reel base that drives this rotate synchronously, the rotation information corresponds to the rotation information of the reel base.

Then, the detection results detected by the respective rotation detectors 17, 18, 25 are sent to the CPU (central processing unit) 33 via the rotation detection unit 32 shown in FIG. Here, the capstan 19 and the pair of reel hubs 10, 1
Only when the rotation information from 1 is obtained, the playback operation (PL
AY) is performed. When it is determined to be the reproduction state, the CPU
A pair of reel motors 30 and 31 are rotated by a command from 3, and the reels in the small cassette 2 that engage with the reel motors 30 and 31 are rotated to run the magnetic tape.

At the same time, the head base 9 is slid toward the small cassette 2 and recorded on the magnetic tape built in the small cassette 2 by the reproducing head 7 mounted on the head base 9. The digital signal record information is read.

Then, the read digital signal record information is amplified by the amplifier 34 shown in FIG.
It is converted into analog signal record information by the converter 35 and is transmitted to the output head 8. Further, the analog signal recording information from the output head 8 is changed to the rotation detecting tape 2
3 is transmitted to the magnetic head 36 on the side of the tape recorder which is provided so as to face each other with 3 in between. As a result, it is amplified by the amplifier 37 and reproduced by the speaker provided in the tape recorder.

By the way, when the rewind button of the tape recorder is pressed, the operation is as follows. First, when one reel base is rotationally driven, the reel hub 10 of the adapter 1 that engages with this rotates in the clockwise direction in FIG. At the same time, the other reel hub 11 also rotates synchronously via the rubber belt 14.

As a result, the rotation information (information about clockwise rotation) of the reel hubs 10 and 11 is detected by the rotation detectors 17 and 18, respectively. On the other hand, since the capstan 19 and the pinch roller 20 are not inserted in the cassette 5 of the adapter 1, the rotation detecting tape 23 does not run. Therefore, the rotation information from the capstan 19 is
It is not detected by the rotation detector 25.

Then, based on these detection results, the CPU
In response to a command from 33, only one reel motor 31 is rotated, and the reel hub of the small cassette 2 that engages with this rotates. As a result, the magnetic tape contained in the small cassette 2 is rewound (REWIND).

On the other hand, when the fast-forward button of the tape recorder is pressed, the operation is as follows. First, the reel hub 11 of the adapter 1 that engages with the reel base of FIG.
Rotate in the counterclockwise direction. At the same time, the other reel hub 10 also rotates in synchronization via the rubber belt 14.

As a result, the rotation information of the reel hubs 10 and 11 (information about the counterclockwise rotation) is detected by the rotation detectors 17 and 18, respectively. On the other hand, since the capstan 19 and the pinch roller 20 are not inserted in the cassette 5 of the adapter 1, the rotation detecting tape 23 does not run. Therefore, the rotation information from the capstan 19 is
It is not detected by the rotation detector 25.

Then, based on these detection results, the CPU
In response to a command from 33, only one reel motor 30 is rotated, and the reel hub of the small cassette 2 that engages with this rotates. As a result, the magnetic tape built in the small cassette 2 is fast-forwarded (FAST FORWARD).
D).

When the stop button is pressed, it operates as follows. Since the capstan 19 and the pinch roller 20 are not inserted in the cassette 5 of the adapter 1, the rotation information of the capstan 19 cannot be obtained. Further, since the reel stand of the tape recorder also does not rotate, the pair of reel hubs 10 and 11 built in the cassette 5 of the adapter 1 also does not rotate, and the rotation information of these cannot be obtained.

Therefore, based on these rotation information, C
The drive of the reel motors 30 and 31 is stopped by a command from the PU 33.

[0038]

As is clear from the above description, in the reproducing adapter for a small cassette according to the present invention, a microminiature cassette containing a magnetic tape recording digital signal recording information is attached to the adapter. Only by putting this in the tape recorder, the tape recorder can reproduce it based on the rotation information from each detecting means built in this adapter. Therefore, it can be easily reproduced by a tape recorder such as a cassette deck, a radio cassette deck, or a car stereo cassette deck mounted in a house, which is very convenient.

Further, in the reproducing adapter for the small cassette according to the present invention, the tape rotation drive mechanism for driving the magnetic tape contained in the small cassette and the signal recording information recorded on this magnetic tape are transmitted to the tape recorder. Since the power supply unit for driving the signal transmission means is provided, the reproduction can be easily performed only by mounting the adapter on the tape recorder.

[Brief description of drawings]

FIG. 1 is a perspective view of a reproduction adapter for a small cassette to which the present invention is applied.

FIG. 2 is a plan view showing a state in which the upper half of the reproduction adapter for a small cassette to which the present invention is applied is removed.

FIG. 3 is a cross-sectional view of a small cassette reproduction adapter to which the present invention is applied.

FIG. 4 is a flowchart showing the operation of the small cassette playback adapter to which the present invention is applied.

FIG. 5 is a circuit diagram of a reproduction adapter for a small cassette to which the present invention is applied.

[Explanation of symbols]

 1 ... Adapter 2 ... Small Cassette 5 ... Cassette 7 ... Playback Head 8 ... Output Head 10, 11 ... Reel Hub 14 ... Rubber Belt 15, 16 ... Connection Belt 17, 18 ... Rotation detector 19 ... Capstan 20 ... Pinch roller 23 ... Rotation detection tape 24 ... Rotation detection roller 25 ... Rotation detector 26 ... Power supply unit 30, 31 ... Reel motor 35 ... D / A converter 36 ... Magnetic head (tape recorder side)

Claims (3)

[Claims] 1. A tape rotation drive mechanism for mounting a small cassette and rotating a magnetic tape contained in the small cassette, and a signal for transmitting signal recording information recorded on the magnetic tape of the small cassette to a tape recorder. The reel base rotation detection means includes a transmission means, a reel base rotation detection means for detecting rotation of a pair of reel bases of the tape recorder, and a capstan rotation detection means for detecting rotation of a capstan of the tape recorder. And a reproduction adapter for a small cassette, which reproduces the signal record information of the magnetic tape contained in the small cassette based on the detection result from the capstan rotation detecting means. 2. A signal transmission means for reproducing a signal recording information recorded on a magnetic tape contained in a small cassette, and an output head for transmitting a reproduction signal from the reproducing head to a magnetic head of a tape recorder. The reproducing adapter for a small cassette according to claim 1, wherein the reproducing adapter comprises: 3. A reproducing adapter for a small cassette according to claim 1, further comprising a power supply unit for driving the tape rotation drive mechanism and the signal transmission means.