JPH02116052A - Magnetic recording/reproducing device - Google Patents

Abstract

PURPOSE:To read the information signal without giving the damage to a magnetic tape even in its high-speed operation mode by varying the position of a 1st tape loading means which is set at the inlet side of a tape guide drum. CONSTITUTION:A magnetic recording/reproducing device of a helical scan type contains the 1st and 2nd tape loading means 31 and 32 which wind a magnetic tape 26 round a tape guide drum 30. Then the position of the means 31 set at the inlet side of the drum 30 is changed. As a result, the winding angle of the tape 26 is varied to the drum 30 between the constant speed and high- speed operation modes of the tape 26. Thus it is possible to read the recorded information signal without giving the damage to the tape 26 even in its high- speed operation mode.

Description

DETAILED DESCRIPTION OF THE INVENTION A. Industrial Field of Application The present invention provides a method for winding and running a magnetic tape around a tape guide drum of a rotating magnetic head device equipped with a rotating magnetic head.
The present invention relates to a helical scan type magnetic recording and reproducing apparatus that records and reproduces information signals such as audio signals by making relative sliding contact between the rotating magnetic head and a magnetic tape.

B1 Summary of the Invention The present invention provides a method for winding and running a magnetic tape around a tape guide drum of a rotating magnetic head device including a rotating magnetic head.
In the helical scan type magnetic recording and reproducing apparatus that records and reproduces information signals such as audio signals by making relative sliding contact between the rotating magnetic head and the magnetic tape, the first step is to wind the magnetic recording and reproducing apparatus tape around the tape guide drum. By varying the movement position of the first tape loading means, which is located on the inlet side of the tape guide drum, of the first and second tape loading means, the magnetic tape can be operated in a constant speed running operation mode and in a high speed running operation mode. The winding angle of the tape of the magnetic recording/reproducing apparatus around the tape guide drum in the above embodiment is variable, and the information signals recorded on the magnetic tape can be read by at least a rotating magnetic head during a high-speed operation mode.

C1 Prior Art Conventionally, a magnetic tape is wound around a tape guide drum of a rotating magnetic head device and is run, and the rotating magnetic head and the magnetic tape are brought into relative sliding contact to generate audio signals, video signals, etc. BACKGROUND ART Helical scan type magnetic recording and reproducing devices that record and reproduce information signals are widely used.

This type of magnetic recording/reproducing apparatus has a tape running system as shown in FIG. 6 to run a magnetic tape 1, and to make relative sliding contact between this magnetic tape 1 and a rotating magnetic head of a rotating magnetic head device 2, audio can be heard. There are known devices configured to record and reproduce information signals such as signals and video signals.

The magnetic recording/reproducing apparatus shown in FIG. 6 has a rotating magnetic head device 2 equipped with a rotating magnetic head disposed opposite the magnetic tape pull-out surface side of a tape cassette 3 loaded at a predetermined tape cassette loading position. There is. Further, a tape supply reel 4 and a tape take-up reel 5 in the tape cassette 3 are located on both sides of the rotating magnetic head device 2, respectively.
- First and second tape loading operations in which the magnetic tape 1 wound between the two is pulled out from the tape cassette 3 and wound around the tape guide drum 6 of the rotary magnetic head device 2 over a predetermined angle range. Block 7.8 is arranged. These first and second tape loading blocks 7.8 have a guide roller 9 and an inclined guide pin 10, and are rotated as shown in FIG. The magnetic head device 2 is moved over a range up to the lateral front position.

In this magnetic recording/reproducing apparatus, when a recording/reproducing operation mode is selected, a tape loading mechanism is operated, and the first and second tape loading blocks 7.8 are moved by this tape loading mechanism. By this movement of the first and second tape loading blocks 7.8, the magnetic tape l is pulled out from within the tape cassette 3. Then, by moving the first and second tape loading blocks 7.8 to the final movement positions shown in FIG. The tape is wound spirally over a range, for example, approximately 180°, and is loaded onto a predetermined tape path as shown in FIG.

In the state where the magnetic tape l is loaded onto the tape path shown in FIG. It is made to travel at a constant speed in the direction in which it is wound up on the take-up reel 5. In this constant speed running state, the magnetic tape 1 is brought into relative sliding contact with the rotating magnetic head, and a video signal is recorded on a recording track formed at a predetermined inclination angle over the entire width of the tape, or The video signal recorded on the recording track is played back.

Furthermore, when the magnetic tape l is loaded onto the tape path as shown in FIG. , sliding contact is made with an audio signal and control signal recording/reproducing head 14 disposed between the rotating magnetic head device 2 and the tape winding reel 5.

By the way, if the magnetic tape 1 is run at a faster speed than the constant speed run with the magnetic tape 1 still loaded on the tape path as shown in FIG. 6, damage will be caused to the magnetic tape l. is large and can easily cause damage.

Therefore, when the rewind mode or the fast forward operation mode is selected in which the magnetic tape 1 is run at high speed, the first and second tape loading blocks 7.8 are moved to the tape cassette 3 as shown in FIG. Move it to the initial position on the side. Then, the tape is run in a so-called unloaded state in which the magnetic tape 1 is drawn into the tape cassette 3 from a tape path as shown in FIG. 6 where information signals can be recorded and reproduced.

In the case where the magnetic tape 1 is configured to run in the unloaded state during the high-speed running operation mode of the magnetic tape 1, the sliding contact between the magnetic tape 1 and the disk 14 for recording and reproducing audio signals and control signals is prevented. Since the connection is released, the control signal recorded on the magnetic tape 1 cannot be reproduced either.

Therefore, even when the magnetic tape 1 is in the high-speed running operation mode, the magnetic tape 1 is brought into sliding contact with the audio signal and control signal recording/reproducing head 14, and a desired recording track recorded on the magnetic tape 1 can be searched. There is something that has been designed to allow you to do this. This magnetic recording and reproducing device moves the first tape loading block 7 located on the entrance side of the rotating magnetic head device 2 to the initial position as shown by the imaginary line in FIG. 8 when the magnetic tape 1 is in a high-speed running operation mode. By moving the second tape loading block 8 to a slightly midway position, the magnetic tape 1 is unwound around the tape guide drum 6 so that it is in slight contact with the tape guide drum 6, and the exit of the rotating magnetic head device 2 is removed. The tape loading state is set to open when the tape is passed on the side.
The magnetic tape 1 is brought into sliding contact with the head 14 for recording and reproducing audio signals and control signals, thereby making it possible to reproduce the control signals recorded on the magnetic tape 1.

In addition, in both the constant speed running operation mode and the high speed running operation mode of the magnetic tape 1, the magnetic tape 1 is running in the tape loading state with the magnetic tape 1 wound around the tape guide drum 2. There are also known devices configured to perform the following. This magnetic recording and reproducing device is
A folding guide 15, an inclined guide 16, and a plurality of other tape guides 17 are arranged on a loading ring (not shown) that rotates around the outer circumference of the rotating magnetic head unit WIL2, and the magnetic tape 1 is loaded into a tape cassette by rotation of the loading ring. 3, and is wound around the tape guide drum 2. As shown in FIG. 9, the tape is loaded so as to take an inverted U-shaped tape path with respect to the tape guide drum 2. It is something.

D0 Problems to be Solved by the Invention In the magnetic recording and reproducing apparatus configured as shown in FIG. Since there is no sliding contact with any magnetic heads, including the head 14 for recording and reproducing audio and control signals, it is impossible to reproduce any information signals recorded on the magnetic tape 1.

In addition, in the magnetic recording and reproducing apparatus configured as shown in FIG. 8, since the magnetic tape l and the disk 14 for recording and reproducing audio signals and control signals can be brought into sliding contact, the magnetic tape Although it is possible to reproduce control signals recorded in series along the longitudinal direction of 1,
Since the rotating magnetic head disposed in the rotating magnetic head device 2 and the magnetic tape 1 are not in sliding contact with each other, it is difficult to reproduce information signals recorded on recording tracks formed on the magnetic tape 1 at an angle. can't do it.

Furthermore, in the magnetic recording and reproducing apparatus configured as shown in FIG. 9, even when the magnetic tape l is in a high-speed running operation mode, the magnetic tape l is kept loaded on a predetermined tape path. Therefore, it is possible to reproduce information signals recorded on recording tracks formed on the magnetic tape 1 at an angle by making sliding contact between the magnetic tape 1 and the rotating magnetic head. However, considering the damage caused to the magnetic tape 1, there is a limit to the tape speed in the high-speed running operation mode, making it impossible to achieve ultra-high-speed tape running.

SUMMARY OF THE INVENTION Accordingly, the present invention makes it possible to read information signals recorded on a magnetic tape with at least a rotating magnetic head even when the magnetic tape is in a high-speed running operation mode, and at the same time allows the magnetic tape to be read at a higher speed without damaging the magnetic tape. This was proposed for the purpose of providing a magnetic recording/reproducing device that can run magnetic tape.

80 Means for Solving the Problems In order to achieve the above-mentioned objects, the present invention provides a system in which a magnetic tape pulled out from a tape cassette is wound around a tape guide drum of a rotating magnetic head device having a rotating magnetic head and is run. In a magnetic recording and reproducing apparatus for recording and reproducing information signals on the magnetic tape by making relative sliding contact between the magnetic tape and the rotating magnetic head, A first tape loading means and a second tape loading means for pulling out a magnetic tape from the tape cassette and winding it around the tape guide drum are disposed at each position, and the first and second tape loading means are disposed at each position. The means includes a winding operation over a first winding angle range for winding the magnetic tape around the tape guide drum over a predetermined angle range from a first position where the magnetic tape can be pulled out from the tape cassette. The first and second tape loading means are movable between second positions in which the magnetic tape is moved to the second position, and when the magnetic tape is in a constant speed running operation mode, the first and second tape loading means are moved to the second position to load the magnetic tape into the second position. 1
When the magnetic tape is in a high-speed running operation mode, the first tape loading means located at the entrance side of the tape guide drum is moved to the first moving position. A second moving position, which is moved to an intermediate position between the second moving position and which rotates the magnetic tape at an angle smaller than the first winding angle, and enables the rotating magnetic head to read information signals recorded on the magnetic tape. The tape is wound around a tape guide drum within a winding angle range of .

F0 action The present invention provides the first
and a second tape loading means moves the magnetic tape from a first position where the magnetic tape can be pulled out from the tape cassette to a second position where the magnetic tape is wound around the tape guide drum over a first winding angle range. When the magnetic tape is in a high-speed running operation mode, the first tape loading means located at the artificial side position of the tape guide drum is moved to an intermediate position between the first moving position and the second moving position, and the magnetic tape is moved to an intermediate position between the first moving position and the second moving position. is wound around the tape guide drum at a second winding angle range that is smaller than the first winding angle and allows the rotating magnetic head to read the information signals recorded on the magnetic tape.

G. Examples Specific examples of the present invention will be described below with reference to the drawings.

FIG. 1 shows an example in which the present invention is applied to a digital audio tape recorder that pulse-codes an audio signal and records it on a magnetic tape.

The tape recorder shown in FIGS. 1 and 2 has a rotating magnetic head provided with a rotating magnetic head close to and facing the magnetic tape pull-out surface side of a tape cassette 21 mounted in a cassette mounting section configured in the tape recorder main body. A head device 22 is arranged.

A tape reel 21 attached to the tape recorder stores a magnetic tape 26 wound around it between a tape supply reel 24 and a tape end reel 25 rotatably supported within a cassette half 23. Further, a front cover 27 is rotatably attached to the side of the magnetic tape draw-out surface from which the magnetic tape 26 is drawn out of the cassette half 23 so as to open and close this draw-out surface. Further, on the bottom side of the cassette half 23, as shown in FIG. 2, a closing plate 29 opens and closes the reel shaft insertion hole through which the reel shaft 28 that engages the tape supply reel 24 and the tape take-up reel 25 is inserted. is installed so that it can slide. In this tape cassette 21, the front cover 27 is rotated to open the tape draw-out surface side of the cassette half 23 and the magnetic tape 26 can be pulled out, and the closing plate 29 is slid to open the reel shaft insertion hole and each The tape reels 24 and 25 are mounted in a predetermined cassette mounting section with the reel shafts 28 engaged.

The rotating magnetic head device 22 is constructed by mounting two rotating magnetic heads within a tape guide drum 3° around which a magnetic tape 26 is spirally wound over a range of approximately 180° during a constant speed running operation mode. ing. The rotating magnetic head unit 222 is located very close to the front edge of the cassette half 23 of the tape cassette 21 mounted in the tape cassette mounting section, and is located on the tape supply reel 24 side from the widthwise center of the tape cassette 21. It is located close to the Further, the rotary magnetic head device 22 is arranged within the tape recorder main body in a state inclined at a predetermined angle with respect to the mounting plane of the tape cassette 21. That is,
As shown in FIG. 2, the rotary magnetic recording/reproducing apparatus head device 22 is arranged at an angle so as to fit into the tape cassette 21.

Then, the tape cassette 2 is moved from the tape cassette mounting position side along the lateral position of the rotary magnetic head device 22.
1 pull out the magnetic tape 26 from inside the tape guide drum 3
First and second tape loading blocks 31, 32 are provided which constitute first and second tape loading means for winding operations. These first and second tape loading blocks 31 and 32 are connected to the movable base 3
A pair of inclined guide pins 35, 36 and a pair of guide rollers 37, 38 are installed on 3.34.

The first tape loading block 31 is located on the entrance side of the magnetic tape 26 to the tape guide drum 30, and the second tape loading block 32 is located on the entrance side of the magnetic tape 26 from the tape guide drum 30. It is located on the exit side.

The first and second tape loading blocks 31.
32 is operated by a tape loading mechanism (not shown).
Tape cassette 2 installed in the tape cassette installation position
The magnetic tape 26 is inserted into the loading mechanism entry recess 39 formed on the front side of the first cassette half 23 from the first position shown in FIG. It is movable along a locus L as shown in FIG. 1 over a winding angle range of approximately 180 degrees and a second position where the winding operation is performed.

In addition, in the tape loading state shown in FIG.
from the tape supply reel 24 in the cassette half 23
A fixed guide roller 41, a tape tension control guide roller 42, a fixed inclined guide 43, and a fixed guide roller 44 are disposed during the inlet-side tape path of the magnetic tape 26 to the rotating magnetic head device 22 leading to the tape loading block 31. has been done. By providing these fixed inclined guides 43 and fixed guide rollers 44, an inclined surface is provided on the first tape loading block 31 that guides the magnetic tape 26 toward the tape guide drum 30 so that it is wound in a spiral manner. The magnetic tape 26 is wound around the guide pin 35 at a small angle.

Furthermore, in the loading state shown in FIG.
During the exit side tape path of the magnetic tape 26 to the rotating magnetic head device 22 from the tape loading block 32 to the tape take-up reel 24 in the cassette half 23, there is a capstan 45, which presses the magnetic tape onto the capstan 45. A pinch roller 46 and a rotating guide roller 47 for feeding the roller 26 at a constant speed are provided. The tension control guide roller 42 and rotating guide roller 47
is rotated so as to follow the loading operation of the magnetic tape 26 and move into the tape path from the tape force set 21 side. In addition, the pinch roller 46 is rotated from the tape cassette 21 side to a position close to the capstan 46 following the loading operation of the magnetic tape 26, and in a recording/reproduction operation mode in which the magnetic tape 26 runs at a constant speed. When selected, the capstan 46 is pressed and the magnetic tape 26 is fed at a constant speed.

By the way, when the tape recorder is placed in an unloading state in which the magnetic tape 26 is not loaded during a predetermined tape pass, the first and second tape loading blocks 31 and 32 load the tape 26 as shown in FIG. Tape cassette 21 installed in the cassette installation position
The cassette half 23 has been moved to a first position facing into the loading mechanism entrance recess 39 formed on the front side of the cassette half 23. At this time, the inclined guide pin 35°36
When the tape cassette 21 is installed at the tape cassette installation position, the guide rollers 37 and 38 move the magnetic tape 26 extending along the front side of the cassette half 23.
The camera is placed facing the back side of the camera. Further, the tape tension control guide roller 42, the pinch roller 46, and the rotating guide roller 47 have also been moved to positions facing the loading mechanism entry recess 39 on the front side of the cassette half 23.

In such an unloading state shown in FIG. 3, when the tape cassette 21 is installed at the tape cassette installation position and the tape loading mechanism is started, the first and second tape loading blocks 31 and 32 are tilted around f. The magnetic tape 26 is pulled out from inside the cassette half 23 by the guide pins 35, 36 and guide rollers 37, 38, and the rack moves along the trajectories Lt, Lx as shown in FIG.
, until it reaches the second position shown in FIG. 1, and is positioned at this second position.

At this time, the tape tension control guide roller 42,
The pinch roller 46 and the rotating guide roller 47 are also moved from the position facing the loading mechanism entry recess 39 shown in FIG. 3 to the position in the tape path in the tape loading state shown in FIG. When the first and second loading blocks 31, 32, etc. are moved in this manner, the magnetic tape 26 is wound around the tape guide drum 30 over an angular range of approximately 180 degrees, as shown in FIG. The tape is wound over a first winding angle range and loaded into a tape path where the tape is run at a constant speed.

In addition, in the loaded state as shown in FIG. 1, the magnetic tape 26 is guided in a state in which it can run without contacting guide rollers 50, 51 provided within the cassette half 23.

In this way, the guide roller 50 in the cassette half 23.
By running the magnetic tape 26 without contacting the magnetic tape 51, highly accurate tape running is guaranteed.

During the tape pass as shown in Figure 1 above, the magnetic tape 26
When the recording and/or reproducing operation mode is selected with the magnetic tape 26 loaded, the pinch roller 47, which is rotated to a position opposite to and close to the capstan 46, presses against the capstan 46 and pinches the magnetic tape 26. The magnetic tape 26 is fed at a constant speed in the direction of the arrow in FIG. When the magnetic tape 26 is fed at a constant speed, the rotating magnetic head and the magnetic tape 26 are in relative sliding contact over the entire width of the magnetic tape 26 at a predetermined angle of inclination. By the relative sliding contact between the rotating magnetic head and the magnetic tape 26, an information signal such as a pulse-coded audio signal is recorded, or an information signal recorded on the magnetic tape 26 is reproduced.

Further, a fast forward operation mode in which the magnetic tape 26 is operated at a higher speed than in the constant speed operation mode, a winding operation mode, a high speed search mode in which desired recorded information recorded on the magnetic tape 26 is selected, etc. are selected. Then, the first tape loading block 31 loads the magnetic tape 26 onto the tape guide drum 30 by approximately 180 degrees, as shown in FIG.
The second position shown in FIG.
It is moved to an intermediate position located between the first position shown in the figure. Further, as shown in FIG. 4, the tension control guide roller 42 is also moved to the position shown in FIG. Recess 3
9 and the position shown in FIG. 2 is moved to an intermediate position. Note that at this time, the second tape loading block 32 is in the second position.

In the state shown in FIG. 4 in which the first tape loading block 31 is moved to an intermediate position between the first position and the second position as described above, the magnetic tape 26 is approximately 116 mm away from the tape guide drum 30. It is wound over an angular range of degrees. Although this winding angle range is smaller than the winding angle in the constant speed running operation mode described above, relative sliding contact between the rotating magnetic head and the magnetic tape 26 is achieved.
This makes it possible to read information signals recorded on the magnetic tape.

By the way, in the digital audio tape recorder, the recording track (T) formed on the magnetic tape 26
is constructed as shown in FIG.

That is, the main data block (in which the pulse-coded audio signal is recorded) is located in the center of the recording track (T).
Md) is formed and this main data block (Md)
A subcode block (Sub) in which control signals such as a song start signal, a signal indicating a song number, etc. recorded at both ends of the block are recorded as pulse-coded subcodes.
is formed. In a digital audio tape recorder that pulse-codes information signals including control signals and records them, the rotating magnetic head and the magnetic tape 26 are connected even if the winding angle is smaller than the winding angle in the constant speed operation mode. relative sliding contact is achieved, and the recording track (
Subcode blocks (Sub
), it is possible to realize a search function that detects a song start signal, a signal indicating a song number, etc. in the high-speed driving operation mode.

Therefore, according to the audio digital tape recorder according to the present invention, high-speed search can be achieved using the rotating magnetic head.

Further, in the present invention, since the tape path on the exit side of the tape guide drum 30 is the same in the constant speed running operation mode and the high speed running operation mode, the start signal of the song is signaled during the tape pass on the exit side. It is also possible to provide a fixed head for recording and reproducing control signals such as signals indicating song numbers, and to reproduce the control signals using the fixed head in the high-speed running operation mode to realize a search function.

Although the above-described embodiment has been described as a digital audio tape recorder that records audio signals, it can also be applied to a magnetic recording and reproducing device that records and reproduces video signals and the like.

H0 Effects of the Invention As described above, the present invention provides the first and second tape loading means with the first and second tape loading means capable of pulling out the magnetic tape from the tape cassette during the magnetic tape constant speed running operation mode.
the magnetic tape is wound on the tape guide drum over a first winding angle range; A first tape loading means located therein is moved to an intermediate position between the first moving position and the second moving position, and the magnetic tape is loaded at an angle smaller than the first winding angle with the rotating magnetic head. Since the magnetic tape is wound around the tape guide drum in a second winding angle range that makes it possible to read the information signals recorded on the magnetic tape,
To run a magnetic tape at a higher speed without damaging the magnetic tape while making it possible to read information signals recorded on the magnetic tape by at least a rotating magnetic head even in a high-speed running operation mode of the magnetic tape. be able to. Therefore, it is possible to realize a search function for songs recorded by the rotating magnetic head in the high-speed operation mode of the magnetic tape.

In addition, since the selection of the magnetic tape high-speed running operation mode is performed by controlling the movement position of the first tape loading block that performs the magnetic tape loading operation, new parts are required to configure the above-mentioned high-speed running operation mode. Since this is not necessary, the configuration of the magnetic recording/reproducing device is also simplified.

[Brief explanation of the drawing]

FIG. 1 shows a magnetic recording and reproducing apparatus according to the present invention, and is a plan view of a state in which a magnetic tape is loaded onto a tape path in a constant speed operation mode, and FIG. 2 is a plan view of the magnetic recording and reproducing apparatus described above. FIG. 3 is a plan view of the magnetic recording/reproducing apparatus in an unloading state;
The figure is a plan view in a high-speed running operation mode in which the first tape loading block is moved to an intermediate position between the first position and the second position, and FIG. FIG. 2 is a schematic diagram showing the configuration of a track. FIG. 6 shows a conventional magnetic recording and reproducing device,
FIG. 7 is a plan view of the magnetic tape loaded onto the tape path in a constant speed running operation mode; FIG. 9 is a plan view showing a conventional magnetic recording/reproducing device, and FIG. 9 is a plan view showing still another conventional magnetic recording/reproducing device. 21...Tape cassette 22...Rotating magnetic head device 26...Magnetic tape 30...Tape guide drum 31...First tape loading block 32...
・Second tape loading block 35.36...
Inclined guide pin 37.38...Guide roller

Claims (1)

[Claims] A magnetic tape pulled out from a tape cassette is wound around a tape guide drum of a rotating magnetic head device equipped with a rotating magnetic head, and the magnetic tape is caused to travel so that the magnetic tape and the rotating magnetic head come into relative sliding contact. In the magnetic recording and reproducing apparatus for recording and reproducing information signals on the magnetic tape, the magnetic tape is pulled out from the tape cassette and the magnetic tape is pulled out from the tape cassette at each position on the entrance side and the exit side of the magnetic tape with respect to the tape guide drum. A first tape loading means and a second tape loading means are respectively disposed for winding the magnetic tape, and the first and second tape loading means are connected to a first tape loading means for winding the magnetic tape from the tape cassette. a first position for winding the magnetic tape on the tape guide drum over a predetermined angle range; and a second position for winding the magnetic tape over a predetermined winding angle range; During the constant speed running operation mode, the first and second tape loading means are moved to the second position to wind the magnetic tape around the tape guide drum over a first winding angle range. At the same time, during the magnetic tape high-speed running operation mode, the first tape loading means located at the inlet side position of the tape guide drum is moved to an intermediate position between the first moving position and the second moving position, and the magnetic tape is moved to an intermediate position between the first moving position and the second moving position. The tape is wound around a tape guide drum at a second winding angle range that is smaller than the first winding angle and that allows a rotating magnetic head to read information signals recorded on the magnetic tape. A magnetic recording and reproducing device.