JPH10154305A - Recording/reproducing device and recording/reproducing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve functionality by providing a selection means for selecting whether each head is used for the recording head or the reproducing head, and a mechanism for controlling the access of each head against an optional track. SOLUTION: The positioning of each head 32 to the track is realized by an access control mechanism using voice coils 33 in the state the rear side of a magnetic recording medium 4 is supported by guides 31, and each head 32 is brought into contact with the surface of the magnetic tape 4 from the front side of the magnetic tape 4. The figure (c) shows the structure provided with modularized well-known head structures in the plural used for a floppy disk drive, and this structure is formed so that the magnetic tape 4 is held between the heads 41 and hard pads 42 from the front and rear sides, and also the heads and the hard pads are integrally displaced in the breadthwise direction of magnetic tape 4 by voice coils 43 (access control mechanism), thereby positioning the head on the track of the magnetic tape 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording / reproducing apparatus having improved functionality for recording and reproducing various kinds of information by accessing desired tracks by a plurality of heads. The present invention relates to a recording / reproducing apparatus and a recording / reproducing method suitable for use in the present invention.

[0002]

2. Description of the Related Art In a conventional recording / reproducing apparatus, for example, a VTR for recording / reproducing a video signal, a video including audio is recorded on a tape, and a video and an audio recorded on a tape are reproduced. In this case, either a recording mode for recording a video signal on a tape or a reproduction mode for reproducing a video signal recorded on a tape is selected. In addition, it is difficult to record video signals from a plurality of television channels at the same time because of the mechanism for recording a video signal on a tape with a video head and reproducing the video signal from the tape. -It is necessary to provide a plurality of regeneration mechanisms.

[0003]

Since the conventional recording / reproducing apparatus and its recording / reproducing method are configured as described above, the recording / reproducing apparatus configured as a VTR has a function of, for example, different TV channels independent of each other. It cannot record video signals, and in tape streamers, in multitasking operating systems,
Even if loading is performed on the same tape, simultaneous recording / reproducing operations such as reading data by another user while one user is storing data on the same tape, There was a problem that was impossible due to the structure of the device.

Accordingly, an object of the present invention is to allow a plurality of heads to simultaneously access desired tracks, and to record various information on a recording medium and reproduce various information recorded on the recording medium. It is an object of the present invention to provide a recording / reproducing apparatus and a recording / reproducing method for improving the functionality by reducing the restrictions at the time of reducing the restrictions.

[0005]

According to the present invention, there is provided a recording / reproducing apparatus having a recording / reproducing circuit for recording and reproducing various information on and from a recording medium. A plurality of heads for recording and reproducing various types of information having no integral significance even when reproduced simultaneously, and a selection unit for selecting whether each of the heads is used as a recording head or a reproducing head And an access control mechanism that slides the respective heads and controls access of the respective heads to an arbitrary track.

[0006] In order to achieve the above object, the present invention provides:
In a recording / reproducing method for recording and reproducing various information on and from a recording medium by a plurality of heads, a tape-shaped recording medium is reciprocated, and further, the head is controlled to move in a width direction of the recording medium, and a forward end and a return end are controlled. The recording / reproducing track is changed in the width direction of the tape-shaped recording medium which does not overlap the tracks on the outward path and the return path, and various information is recorded / reproduced on the track in the running direction and the width direction of the tape-shaped recording medium. It is characterized by the following.

The recording / reproducing apparatus according to the present invention controls the access of each head to an arbitrary track by sliding each head, thereby recording various kinds of information having no integral significance even when reproduced simultaneously. And reproduction are performed on the tracks of the recording medium by the respective heads, and the desired tracks can be simultaneously accessed by the respective heads, thereby recording the various information on the recording medium and recording the information on the recording medium. In this case, the restriction on the reproduction of the various information is reduced, and the restriction on the recording and the reproduction is reduced, thereby improving the functionality.

Further, in the recording / reproducing method of the present invention, the tape-shaped recording medium is reciprocated and the head is controlled to move in the width direction of the recording medium. By changing the recording / reproducing track in the width direction of the tape-shaped recording medium which does not overlap with the recording medium, and recording various information on the recording / reproducing track in the running direction of the tape-shaped recording medium, the desired information can be obtained by a plurality of heads. To facilitate simultaneous access to the tracks, reduce the restrictions on recording the various information on the recording medium and reproducing the various information recorded on the recording medium, and perform the recording and the reproduction. Improve the functionality by reducing the restrictions on performing.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of a recording / reproducing apparatus and a recording / reproducing method according to the present invention will be described. FIG. 1 is a configuration diagram showing a main part of an example of a recording / reproducing apparatus for realizing a recording / reproducing method according to the present invention. The recording medium is a magnetic tape for magnetically recording various types of information, and the information to be recorded / reproduced in this recording / reproducing apparatus is various types of information such as data files, moving images, audio, and audio with moving images. Have no correlation in terms of time or content. That is, normal video and audio signals, stereo left and right audio signals, LL used in English conversation practice
Although each information such as the relationship between the recorder and the audio signal of the multi-channel recording / reproducing is independently established, it is not information that synchronizes in time and generates an effect such as a sense of reality. -Even if the content is recorded / reproduced at the same time, it has no relevance to each other and cannot be recognized when one person receives the information. For example,
If it is information on video and audio, it is difficult for one person to simultaneously watch movies and TV programs, classical music and popular songs in completely different fields even if they are played simultaneously.

This recording / reproducing apparatus has a head unit 11 having a plurality of heads for recording and reproducing, for example, video signals, which have no integral significance even if the tracks on the magnetic tape 4 are reproduced simultaneously. A slider control circuit (access control mechanism) 1 that slides the head unit 11 and controls access of each head of the head unit 11 to an arbitrary track of the magnetic tape.
2 is provided. The magnetic tape 4 is unwound from one of the reels 13a and 13b and wound up by the other reel. Reel 13
a is driven by a reel motor 14a and a reel 13b
Is driven by a reel motor 14b. Reference numeral 15 in the figure
Is a tension detector. The reel control circuit 16 is based on tension information applied to the magnetic tape 4 detected by the tension detector 15 and a reference signal for the rotation speed and torque of the reel motors 14a and 14b given from the system control unit 18. , Reel motors 14a, 14b
By adjusting the rotation speed and torque of the magnetic tape 4, the tension of the magnetic tape 4 is always kept constant. The recording / reproducing circuit 17 performs recording on the magnetic tape 4 by each head of the head unit 11 and reproduction of various information recorded on the head unit 11. The system control unit (file management unit) 18 is a circuit unit that performs a recording mode, a reproduction mode, various signal processing, cooperative control, and the like. The system control unit 18 is configured by a microcomputer, and includes various information to be recorded on the magnetic tape 4 and the magnetic tape. 4 is provided with a buffer memory 18a for temporarily storing various information reproduced from the memory 4. This buffer memory has a storage capacity of 256 kilobytes or more. A video signal recorded on the magnetic tape 4 is input from a signal input terminal 19, and a reproduced video signal reproduced from the magnetic tape 4 is output from a signal output terminal 20.

In this recording / reproducing apparatus, various information recorded on the magnetic tape 4 can be randomly accessed,
In order to be able to manage the capacity and recording position of the file, a storage area or memory (file management information storage unit) for the information indicating the recording position is provided on the magnetic tape 4 or its cassette itself. As a result, despite the fact that it is a magnetic tape, recording and recording of various types of information has the same feeling as a disk.
Perform playback.

FIGS. 2A, 2B and 2C are block diagrams showing the tape contact structure of each head of the head unit 11 used in this recording / reproducing apparatus. FIG. 3A shows that the plate 21 is arranged on the back side of the magnetic tape 4, the head 22 is arranged with a predetermined gap from the plate 21, and the magnetic tape 4 is put on both sides by the plate 21 and the head 22. The head 22 with the magnetic tape 4
The structure for contacting the surface of the
This is a structure prepared for every two. Also, FIG.
It has a configuration in which a plurality of normal fixed heads are arranged.
Each head 32 is controlled by an access control mechanism using a voice coil 33 while the back surface of the magnetic tape 4 is supported by the
Of the track is realized. Then, each head 32 contacts the surface of the magnetic tape 4 from the front side of the magnetic tape 4. FIG. 3C shows a structure in which a plurality of well-known head structures used for a floppy disk drive are modularized and prepared. The magnetic tape 4 is sandwiched between a head 41 and a hard pad 42 from the front side and the back side. The head and the hard pad are integrally displaced in the width direction of the magnetic tape 4 by the voice coil 43 (access control mechanism) and positioned with respect to the track of the magnetic tape 4.

FIG. 3A shows a configuration in which the magnetic tape 4 is sandwiched between a single plate 51 and a plurality of heads 42 arranged in the running direction of the magnetic tape 4. Each head 4
Numeral 2 is positioned relative to the track by sliding in the width direction of the magnetic tape 4 by an access control mechanism having sliders 23 (33, 43). In the head unit having this structure, many heads can be arranged on the magnetic tape 4 in a narrow space. In this case, each head 42
Are arranged in the running direction of the magnetic tape 4 and divided into two sets in the width direction of the magnetic tape 4 as shown in FIG. 3B, and one set is arranged along the upper side of the magnetic tape 4. Alternatively, the other set may be arranged along the lower side of the magnetic tape 4, and the one set of heads and the other set of heads may be arranged to face each other. Alternatively, as shown in FIG. 3C, the magnetic tape 4 is arranged in the running direction and divided into sets in the width direction of the magnetic tape 4, and one set is arranged along the upper side of the magnetic tape 4. The other set is arranged along the lower side of the magnetic tape 4, and the one set of heads and the other set of heads are arranged alternately adjacent to each other in the width direction of the magnetic tape 4. It may be a configuration.

The arrangement of the heads may be as shown in FIG. 4A, and FIG.
1 shows a configuration in which the sliders 1 are fixed to one slider (access control mechanism) 52, respectively. In this case, the slider 52
Although each head 51 is fixed, by switching and using the recording / reproducing head as necessary,
The same effect as in the case where each head 51 is moved by the slider to access and trace the track 53 can be obtained. At this time, the arrangement intervals of the heads 51 are as shown in FIG. 4B.
Or each head 51 is divided into, for example, two sets in the running direction of the magnetic tape 4 so that one set of heads and the other set of heads are adjacent tracks 53 as shown in FIG. The heads 51 are arranged at intervals that can be accessed alternately and traced.

FIG. 5 is an explanatory diagram showing a recording method on the track 53 when recording / reproducing on / from the magnetic tape 4. In this recording / reproducing apparatus, data is basically recorded / reproduced by the reciprocation of the magnetic tape 4 and the vertical movement of the slider in the width direction of the magnetic tape 4, but in order to use a plurality of heads efficiently, As shown in FIG. 6A, from the front end to the rear end of the magnetic tape 4, one at a time.
It is desirable to record and reproduce tracks. However, depending on the purpose of use of the tape, such as when the magnetic tape 4 is used as a streamer, it is better to use a configuration divided into several parts as shown in FIGS. Makes file cueing more efficient. This division number has an optimal value depending on the length of the tape, etc.
Usually, about 10 to 300 is appropriate.

Next, positioning of the head with respect to the track in the recording / reproducing apparatus will be described. Regarding the positioning of the head with respect to the track in this recording / reproducing apparatus, either a method in which a reference on the set side based on the number of pulses of the stepping motor or the like is set in advance or a method using a track servo described below can be applied. . FIG. 7 is an explanatory diagram of a track servo in which each head 61 traces on a data track 62.
In the track servo signals TS1 and TS2, signals having mutually different frequencies are recorded in a state shifted from the data track 62 as shown in FIG. The track servo signals TS1 and TS2 are recorded when the magnetic tape 4 is manufactured or when the user formats the magnetic tape 4. A servo signal RF output 63 corresponding to the track servo signals TS1 and TS2;
The data RF output 64 corresponding to the data signal on 2 is reproduced as shown in FIG. FIG. 8 shows a circuit configuration for realizing track servo using the track servo signals TS1 and TS2. Reproduction R obtained from head 61
The F signal is converted into a DC signal through two filter circuits 71 and 72, and is differentially amplified by a differential amplifier 73. The differential amplifier 73 generates an output according to the difference between the two. The output of the differential amplifier 73 is output to a driver (not shown) of the slider 23, and the driver outputs a slider position control signal to the slider 23.

In this case, the head 61 is connected to the data track 6
2 is traced, the track servo signal T
Two reproduced RFs obtained by detecting S1 and TS2
As shown in FIG. 9A, the signal has the same level of servo R signal.
It becomes F output. However, when the head 61 deviates from one of the data tracks 62, one of the track servo signals is traced as shown in FIGS. 7B and 7C, and the output of one servo RF is increased. Similarly, in the opposite case, the other servo RF output increases. The magnitude of this servo RF output is compared by the differential amplifier 73,
The slider 23 is controlled based on the output of the differential amplifier 73. The track servo signals TS1 and TS2 can overlap a track number signal indicating a track number for performing quick cueing of the track.

Next, FIG. 10 shows a block diagram of a recording / reproducing circuit of the recording / reproducing apparatus. Each of the heads 61a, 61b, 61c, 61d having independently movable sliders has a changeover switch (selection means) 73, 74, 75, 7 respectively.
6, amplifiers 72a, 72b, 7, 7 for recording and reproduction
2c, 72d and amplifiers 71a, 71b, 71c, 71d
Is connected. An encoder 81 and a buffer memory 82 are connected to the recording amplifier 72a. An encoder 83 and a buffer memory 84 are connected to the recording amplifier 72b. The recording amplifier 72c includes:
The encoder 85 and the buffer memory 86 are connected. An encoder 87 and a buffer memory 88 are connected to the recording amplifier 72d. Amplifier for playback 71
The decoder 89 and the buffer memory 90 are connected to a. The decoder 91 and the buffer memory 92 are connected to the reproducing amplifier 71b. Amplifier 7 for playback
A decoder 93 and a buffer memory 94 are connected to 1c. A decoder 951 and a buffer memory 96 are connected to the reproducing amplifier 71d. The buffer memory used here is a semiconductor memory or a magnetic device such as a hard disk. The head runs on a recording / reproducing track parallel to the tape running direction. Further, although one set of recording / reproducing heads is used for each head, two or more pairs of recording / reproducing heads are mounted when the data transfer rate is insufficient.

FIG. 11 is a circuit block diagram showing a recording / reproducing apparatus for recording / reproducing various kinds of information on / from the data track 62 using the heads 61a and 61b as a configuration including a tuner and a monitor. 2 shows a circuit configuration including a signal flow. FIG. 12 shows a circuit configuration in the case of two-channel simultaneous recording. In these circuit block diagrams, switches (selection means) 100, 101, 102, and 10 that are opened and closed according to the recording mode and the reproduction mode, respectively.
3, TV tuners 104 and 106, A / D converters 105, 107 and 108, and a monitor 109 are additionally shown.

Next, the recording / reproducing operation will be described with reference to FIGS. Here, an example in which a video signal is used is shown as an example, but the same applies to a case where a data file / music source is recorded or read.
First, a case where recording and playback are performed simultaneously will be described with reference to FIG. When recording, the head 61b is used. In the case of simultaneous reproduction, the head 61a
Is used. This specific example is shown in FIG. At time 7:00, the scheduled recording of the TV program was started, but the user returned home at time 8:00. In that case, a conventional V
In the TR, it is assumed that the user stops watching the program, watches the program from the middle, and watches the recorded portion after the program ends. Alternatively, a situation is supposed in which the user does not watch the program at all and replays the tape again later to view the program from the beginning. However, with this recording / reproducing apparatus, it is possible to simultaneously reproduce the program even in the middle of the program, so that the program can be viewed from the beginning with a time shift of a minute unit.

When reproducing data during recording, it may be necessary to wait for the head to reach a position on the magnetic tape 4 where data is reproduced. To solve this problem, the information storage capacity for one track is reduced. Prepare a buffer memory that has, and temporarily save the video signal when recording to the buffer memory, stop recording midway, perform cueing for playback with the highest priority, and play To start,
Further, during this reproduction, the video signal temporarily stored in the buffer memory is recorded again. At this time, the data transfer rate of recording / reproducing with respect to the magnetic tape 4 is:
As a matter of course, the data transfer rate required for recording / reproducing a moving image can be reduced, so that the capacity of the data buffer memory can be reduced. A necessary buffer memory uses a semiconductor or a magnetic recording disk. Its capacity is more than 256 kilobytes per head, 10
0 megabytes or less / (the number of tape divisions described above).

Next, a description will be given of a case where the method for simultaneous recording and reproduction is further developed. This is applied when a video is reproduced during recording. As shown in FIG. 13 (b), when a program is recorded from time 7:00 and the user goes home at time 7:30 and appreciates the program, the head 61b is used while recording the program using the head 61a. To perform special playback. When reproduction is performed at, for example, double speed with the combination of the tape drive and the buffer memory, it becomes possible to switch to a normal program at 8:00 and watch it. In addition, as shown in FIGS. 12 and 13C, the TV tuner 1 is formed by using two sets of heads.
Two programs A and B, each of which was tuned by 04 pieces 106
Can be simultaneously recorded. When reading and writing are performed by a plurality of tasks with a tape streamer, the head 6
It is also possible to store a file at 1a and read it with the head 61b even with a tape streamer. In addition, when used simply for storing data, it is possible to increase the data transfer rate by using a plurality of heads for recording.

FIG. 14 is a block diagram of a recording / reproducing circuit of a recording / reproducing apparatus showing a modification of FIG. Each of the heads 61a, 61b, 61c having independently movable sliders has a changeover switch (selection means) 73, 74, 7 respectively.
5, recording / reproducing amplifiers 72a, 72b, 72
c and the amplifiers 71a, 71b, 71c are connected.
A buffer memory 82 for both recording and reproduction is connected to the recording amplifier 72a via a changeover switch 110 that works in conjunction with an encoder 81 and a changeover switch 73. The recording amplifier 72b is connected to the encoder 83 and the changeover switch 74 in conjunction with the changeover switch 111 to perform recording and
A buffer memory 84 for both reproduction and operation is connected. The recording amplifier 72 c is connected to the encoder 85 and the changeover switch 75 in conjunction with the changeover switch 112 to perform recording and
A buffer memory 86 for both reproduction and use is connected. Further, a buffer memory 82 for both recording and reproduction is connected to the reproduction amplifier 71a via a decoder 89 and a changeover switch 110. The playback amplifier 71b includes:
A buffer memory 84 for both recording and reproduction is connected via a decoder 91 and a changeover switch 11. The reproduction amplifier 71c includes a decoder 93 and a changeover switch 11
2, a buffer memory 86 for both recording and reproduction is connected. In the embodiment shown in FIG. 14, the buffer memory corresponding to each of the heads 61a, 61b, and 61c can be used for both recording and reproduction, and the memory can be used efficiently.

[0024]

As described above, according to the recording / reproducing apparatus of the present invention, a plurality of recording / reproducing devices for recording and reproducing various kinds of information which have no integral significance even if they are simultaneously reproduced on a track of a recording medium. A head, selecting means for selecting whether each of the heads is used as a recording head or a reproducing head, and access control for sliding each of the heads and controlling access of each of the heads to an arbitrary track; Since it is configured to have a mechanism, it is possible to simultaneously access desired tracks by the respective heads, and to record the various information on the recording medium and reproduce the various information recorded on the recording medium. Is reduced, and there is an effect that improvement in functionality is realized by reducing the restriction. Further, the recording / reproducing apparatus of the present invention is configured to include a file management means for performing file management at the time of recording and reproduction on the recording medium, so that each head can easily access a desired track, and Restrictions in recording various information on a medium and reproducing the various information recorded on the recording medium are reduced, and there is an effect of improving functionality by reducing the restrictions.

Further, the recording / reproducing apparatus of the present invention is provided with a buffer memory for temporarily storing various information recorded on the recording medium and various information reproduced from the recording medium. The time required for accessing the reproduction position of the recording medium at the time of the recording is shortened, and the recording operation and the reproduction operation can be performed at the same time, so that various kinds of information can be recorded on the recording medium or the recording medium can be recorded on the recording medium. Restrictions when reproducing the various types of recorded information are reduced, and there is an effect of improving functionality by reducing the restrictions.

Further, in the recording / reproducing method of the present invention, the tape-shaped recording medium is reciprocated and the head is controlled to move in the width direction of the recording medium. The recording / reproducing tracks are changed in the width direction of the tape-shaped recording medium which do not overlap, and various kinds of information are recorded on the recording / reproducing tracks in the running direction of the tape-shaped recording medium. It is easy to simultaneously access the tracks, and the restriction on recording the various information on the recording medium and reproducing the various information recorded on the recording medium is reduced, and the restriction is reduced. This has the effect of improving functionality.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing a main part of an example of a recording / reproducing apparatus for realizing a recording / reproducing method according to the present invention.

FIG. 2 is a configuration diagram showing a tape contact structure of each head in an example of a recording / reproducing apparatus for realizing a recording / reproducing method according to the present invention.

FIG. 3 is a configuration diagram showing an arrangement configuration of each head and a tape contact structure in an example of a recording / reproducing apparatus for realizing a recording / reproducing method according to the present invention.

FIG. 4 is a perspective view showing an arrangement configuration of each head in an example of a recording / reproducing apparatus for realizing a recording / reproducing method according to the present invention, and an explanatory diagram showing a relationship between tracks on a magnetic tape and the respective heads.

FIG. 5 is an explanatory diagram showing a recording method on a track when recording / reproducing a magnetic tape in an example of a recording / reproducing apparatus for realizing the recording / reproducing method according to the present invention.

FIG. 6 is an explanatory diagram showing a locus of movement of a head when recording / reproducing on / from a magnetic tape is performed in an example of a recording / reproducing apparatus for realizing the recording / reproducing method according to the present invention.

FIG. 7 is an explanatory diagram of a track servo for each head to trace on a data track in an example of a recording / reproducing apparatus for realizing a recording / reproducing method according to the present invention.

FIG. 8 is a circuit block diagram showing a circuit configuration for realizing track servo by a track servo signal in an example of a recording / reproducing apparatus for realizing the recording / reproducing method according to the present invention.

FIG. 9 is an explanatory diagram showing a trace state of a data track by a head and a servo RF output in an example of a recording / reproducing apparatus for realizing a recording / reproducing method according to the present invention.

FIG. 10 is a circuit block diagram showing a recording / reproducing circuit block of the recording / reproducing apparatus in an example of the recording / reproducing apparatus for realizing the recording / reproducing method according to the present invention.

FIG. 11 is a circuit block diagram including a signal flow when simultaneous recording / reproduction is performed in an example of a recording / reproduction apparatus for realizing the recording / reproduction method according to the present invention.

FIG. 12 is a circuit block diagram showing a circuit configuration in a case where two-channel simultaneous recording is performed in an example of a recording / reproducing apparatus for realizing the recording / reproducing method according to the present invention.

FIG. 13 is an explanatory diagram showing a specific example when performing a recording / reproducing operation in an example of a recording / reproducing apparatus for realizing the recording / reproducing method according to the present invention.

FIG. 14 is a circuit block diagram of a recording / reproducing apparatus showing a modification of FIG.

[Explanation of symbols]

4 ... magnetic recording medium, 11 ... head unit, 12 ...
... Slider control circuit (access control mechanism), 18 ... System control unit (file management means), 18a, 82, 8
4, 86, 88, 90, 92, 94, 96 ... buffer memory, 21, 51 ... plate, 22, 32, 41,
51, 61 ... head, 23, 33, 52 ... slider (access control mechanism), 32 ... guide roller, 43 ...
... voice coil (access control mechanism), 53 ... track, 62 ... data track, 73, 74, 75,
76... Changeover switch (selection means), 100, 101, 1
02, 103... Switches (selection means).

Claims (25)

[Claims] 1. A recording / reproducing apparatus comprising a recording / reproducing circuit for recording / reproducing various kinds of information on / from a recording medium, wherein even if the tracks on the recording medium are simultaneously reproduced, the recording / reproducing circuit has no integral significance. A plurality of heads for recording and reproducing various information; selecting means for selecting whether each of the heads is used as a recording head or a reproducing head; and sliding each of the heads to any of the tracks. An access control mechanism for controlling access to each of the heads. 2. The recording / reproducing apparatus according to claim 1, further comprising file management means for performing file management during recording and reproduction on the recording medium. 3. The recording / reproducing apparatus according to claim 2, wherein the file management means performs file management based on file management information recorded on the recording medium. 4. The recording / reproducing apparatus according to claim 2, wherein said file management means includes a file management information storage section provided on a cassette of said recording medium. 5. A buffer memory for temporarily storing various information recorded on the recording medium and various information reproduced from the recording medium.
The recording / reproducing apparatus as described in the above. 6. The buffer memory according to claim 5, wherein said buffer memory has a storage capacity of 256 kilobytes or more.
The recording / reproducing apparatus as described in the above. 7. The recording / reproducing apparatus according to claim 1, wherein the recording medium is a magnetic recording medium for recording the various information by magnetism. 8. The recording medium is a tape-shaped magnetic recording medium, and recording and reproduction of the various information are performed on a plurality of tracks of the tape-shaped magnetic recording medium by a plurality of heads, and access control is performed. 8. The recording / reproducing apparatus according to claim 7, wherein the mechanism controls the access of each head to an arbitrary track of the tape-shaped magnetic recording medium by sliding each head. 9. The recording / reproducing apparatus according to claim 8, wherein the track is parallel to a running direction of the tape-shaped magnetic recording medium. 10. The track reciprocates in the longitudinal direction of the tape-shaped magnetic recording medium in parallel with the running direction of the tape-shaped magnetic recording medium, and displaces at the track end in the width direction of the tape-shaped magnetic recording medium. 10. The recording / reproducing apparatus according to claim 9, wherein: 11. The tape is arranged such that, in each divided area on the tape-shaped magnetic recording medium divided in the longitudinal direction, the track extends in the longitudinal direction of the tape-shaped magnetic recording medium in parallel with the running direction of the tape-shaped magnetic recording medium. 2. The apparatus according to claim 1, wherein the tape-shaped magnetic recording medium has a forward path and a backward path, and is displaced in a width direction of the tape-shaped magnetic recording medium at a track end.
0. The recording / reproducing apparatus according to 0. 12. The plurality of heads are configured so that the tape-shaped magnetic recording medium is sandwiched in a gap between the head and a plate portion so that the heads are brought into contact with the tape-shaped magnetic recording medium. 9. The recording / reproducing apparatus according to claim 8, wherein the mechanism controls the access of each head to an arbitrary track by sliding each head with respect to the tape-shaped magnetic recording medium. 13. The tape-shaped magnetic recording medium according to claim 1, wherein each of the plurality of heads is mounted on the tape-shaped magnetic recording medium from the other surface of the tape-shaped magnetic recording medium opposite to one surface of the tape-shaped magnetic recording medium supported by a guide roller. 9. The recording apparatus according to claim 8, wherein the access control mechanism controls the access of each head to an arbitrary track by sliding the respective heads with respect to the tape-shaped magnetic recording medium. Playback device. 14. The apparatus according to claim 11, wherein the access control mechanism controls the access of each head to an arbitrary track by sliding each head in a width direction of the tape-shaped magnetic recording medium. 1
3. The recording / reproducing apparatus according to 2. 15. The recording / reproducing apparatus according to claim 14, wherein said heads are arranged in a running direction of said tape-shaped magnetic recording medium. 16. The respective heads are arranged in the running direction of the tape-shaped magnetic recording medium and are divided into two sets in the width direction of the tape-shaped magnetic recording medium, and one set of heads and the other set of heads are arranged. 15. The recording / reproducing apparatus according to claim 14, wherein the heads are arranged facing each other. 17. The heads are arranged in a running direction of the tape-shaped magnetic recording medium and are divided into sets in a width direction of the tape-shaped magnetic recording medium, and one set of heads and the other set of heads are provided. 15. The recording / reproducing apparatus according to claim 14, wherein the tape-shaped magnetic recording media are arranged alternately adjacent to each other in the width direction of the tape-shaped magnetic recording medium. 18. The access control mechanism according to claim 12, wherein each of the heads slides integrally to control the access of each of the heads to an arbitrary track of the tape-shaped magnetic recording medium. Recording and playback device. 19. The recording / reproducing apparatus according to claim 18, wherein the heads are arranged in a row in a width direction of the tape-shaped magnetic recording medium. 20. The recording / reproducing apparatus according to claim 19, wherein the respective heads are arranged in a plurality of rows in a width direction of the tape-shaped magnetic recording medium, and slide integrally. 21. Each of the heads is divided into sets in the running direction of the tape-shaped magnetic recording medium, and the divided sets of heads are arranged at intervals that allow alternate access to tracks adjacent to other sets of heads. 21. The recording / reproducing apparatus according to claim 20, wherein: 22. A recording / reproducing method for recording / reproducing various kinds of information on / from a recording medium by a plurality of heads, comprising: reciprocating a tape-shaped recording medium; and controlling movement of the head in a width direction of the recording medium; At the end of the forward path and the backward path, the recording / reproducing track is changed in the width direction of the tape-shaped recording medium so as not to overlap the track on the forward path and the backward path, and various information is recorded on the recording / reproducing track in the running direction of the tape-shaped recording medium. A recording / reproducing method for recording / reproducing. 23. A head for recording and reproducing a variety of information recorded on the recording / reproducing track are separately controlled in a width direction of the tape-shaped recording medium, so that a recording operation is performed. 23. The recording / reproducing method according to claim 22, wherein the reproducing operation is performed simultaneously. 24. When a reproducing operation is started during a recording operation, access is made to a reproducing position of the tape-shaped recording medium by giving priority to the reproducing operation, and the reproducing operation is performed until the access is completed. Storing in the memory the various information recorded by the recording operation after the start of, reducing the time required to access the reproduction position when the reproduction operation is started, the recording operation and the reproduction operation 23. The recording / reproducing method according to claim 22, wherein the steps are performed simultaneously. 25. The recording / reproducing method according to claim 25, wherein the memory has an information storage capacity corresponding to a maximum track length in a tape running direction of a tape-shaped recording medium.