JP2852008B2 - Magnetic recording / reproducing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [0001] BACKGROUND OF THE INVENTION The present invention relates to a helical scan system.
Magnetic recording and reproducing deviceToInvolvement, especially recording on magnetic tape
Recording and playback of search information indicating the content of the program
About. [0002] 2. Description of the Related Art Recording / reproduction time per tape cassette
As tapes become longer, a large number of programs
Can be recorded, but I want to play the required program
If this program is recorded in any position on the tape cassette
You need to know what is being done. [0003] Conventionally, the Journal of SMPTE Vol.
84 July 1975 p. 562-563
Frame on the longitudinal track of the magnetic tape
Recording number signals had been performed
From the frame number of the recording start position of the required recorded program
-If you know this, you can specify this frame number
Thus, the recorded program can be searched. However, the necessary recording in this way
What kind of tape cassette to search for
Must know where the program is recorded
Absent. Therefore, as a general user,
Therefore, the search for the required recorded program is often performed,
More recorded programs per tape cassette,
If you have more tape cassettes,
Will take a long time to search. On the other hand, as described above, a magnetic tape
The frame number signal on the longitudinal track
In addition to the above, the frame number of the recording start position of each recorded program
Digital signal representing a heading containing
Various attempts have been made to record the number and the like. This heading
Is recorded on one tape cassette by playing back
The contents of the program that is
The recording position of a recorded program can be known. In addition,
When recording a new program on a set,
If you modify the headline, the contents of this headline and this are recorded
One-to-one correspondence with recorded programs in tape cassettes
Will do. [0006] By the way, magnetic tapes
The area of the longitudinal track is negligible.
If the heading is recorded in the
Is inevitably less and more search information can be recorded
There was a problem that can not be. The present invention has been made in view of such a situation of the prior art.
The purpose is to record recorded video information
Large amount of search information can be recorded without deteriorating
Helical scan type magnetic recording and reproducing deviceToOffer
Is to do. [0008] [MEANS FOR SOLVING THE PROBLEMS] To achieve the above object
In addition, the magnetic recording / reproducing apparatus according to the present invention employs a rotating head.
Video signal on a magnetic tape, or
Helical scan type magnet that reproduces video signals from the
Recording / reproducing apparatus, wherein the video signal is recorded on a magnetic tape.
In the longitudinal direction of the video signal recording track in the oblique direction
It is recorded in the middle part and is
Audio tracks that record audio signals on audio tracks
E signal recording means and the video signal recording trackofLongitudinal
EndIncluding at least part ofAnd the audio
In the area outside the trackWith digital signalsRecord search information
Search information recording means.
To. [0009] [Function] When the tape cassette is not in use, the magnetic tape
End of the video signal recording track in the tapeof
Including at least someAnd the area outside the audio track
In the areaWith digital signalsSearch information is recorded.
When the tape cassette is attached to the magnetic recording / reproducing device,
Do not degrade recorded video and audio signals.
The search information can be reproduced, and the tape cassette can be reproduced.
What programs are recorded in which locations
be able to. [0010] DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings.
I do. FIG. 1 is a configuration diagram showing a tape running system.
Tape cassette, 2 for magnetic tape, 3 for supply reel, 4
Is a take-up reel, 5 is a cylinder, 6 and 7 are rotary heads, 8
Is the cylinder entry side tilt guide, 9 is the cylinder entry side width regulation
Id, 10 is a cylinder exit side inclined guide, 11 is a cylinder
Outer width regulation guide, 12 is opening, 13 is impedance
Roller, 14 is a full-width erasing head, 15 and 16 are fixed
Id, 17 is the tension pin, 18 is the cassette exit guide
, 19 is a cassette entrance guide, 20 is a capstan,
21 is a pinch roller, 22 is a width-regulating fixed guide, and 23 is
A composite recording / reproducing head, 24 is a composite erasing head, 25 is a draw
Outer pins, 26 is a timer roller, 27 is a detection head, 2
8 is a supply reel direct connection motor, 29 is a take-up reel direct connection motor
It is. In FIG. 1, in a tape cassette 1,
When the magnetic tape 2 is not in use, the magnetic tape 2
Via the set exit guide 18 and the cassette entrance guide 19
The cassette is guided on the take-up reel
18, between the cassette entry side guide 19, this magnetic tape
2 corresponds to the two openings 12 provided in the tape cassette 1.
Crossing. This tape cassette 1 is a magnetic recording / reproducing device.
Is attached to the magnetic tape 2 in one opening 12
The cylinder entrance side inclined guide 8 and the cylinder entrance side width
The regulation guide 9 and the tension pin 17 enter,
The cylinder is located at a position deeper than the magnetic tape 2 in the opening 12.
Exit side inclined guide 10, Cylinder exit side width regulation guide 11
And the drawer pin 25 implanted in the timer roller 26
Embed. The supply reel 3 is a motor connected directly to the supply reel 2.
8 is mounted on a reel base (not shown) directly connected to
Reel 4 is a reel base directly connected to the take-up reel direct connection motor 29
(Not shown). In such a state, the timer roller 26,
Therefore, the drawer pin 25 moves along the arrow F,
Of the magnetic tape 2 by the drawer pin 25 of the tape cassette.
It is pulled out from G1. The drawer pin 25 is denoted by reference numeral 25 '.
In the state shown in the figure, the magnetic tape 2 is inserted into the cassette exit guide.
Pull-out pin 2 between
5 ', composite erasing head 24, composite recording / reproducing head 23 and
And the solid line in contact with only the width regulation fixed guide 22.
A loop path is formed and a hard loading state is established. [0014]FIG. 2 shows a reference example of a method for recording search information.
It is a tape pattern diagram, as shown in the figure,Magnetic tape
In loop 2,Control track on one edge in the width direction
Audio tracks 31 on the other edge
These control tracks are formed in the longitudinal direction of the tape.
Between the audio track 31 and the audio track 31
A video signal recording track 32 recording a set is formed.
You. The audio track 31 and the video signal recording track
The cue track 33 is between the tape 32 and the tape
And the tape cassette 1 is attached to the magnetic recording / reproducing device.
Before it is mounted, it will be
Search information (queue signal) 34 is recorded. The composite recording / reproducing head 23 is shown in FIG.
As shown, the audio head 35 and the control head
Erasing head having a head 36 and a cue head 37
24 is an audio erase head, as also shown in FIG.
And a queue erasing head 39. In FIG. 1, the tape path is indicated by a solid line c.
-In the loading state, the audio
Head 35 and audio erase head 38 are magnetic tapes, respectively.
2 in contact with the audio track 31 shown in FIG.
In this way, the cue head 37 and the cue erase head 39
A control head 36 is connected to the cue truck 33.
The trolley truck 30 is in contact with each other. In the hard loading state, the timer
The detection head 27 faces the roller 26 '. Figure 4 shows Thailand
Moller 26, drawer pin 25 and their moving means
It shows. In FIG.
A cylindrical boss 46 is provided at the tip of the arm 45 which can be rotated.
Ball bearing provided on the inner surface of the boss 46
The inside of the boss 46 is penetrated by the rings 43 and 44.
Shaft so as to be rotatable with respect to the boss 46.
40 are provided. Boss 46 of this shaft 40
The timer roller 26 is attached to the lower part of the
Therefore, it is fixed and is located above the boss 46 of the shaft 40.
Is a material made of rubber or other material with a high surface friction coefficient.
The rubber 42 is fixed by means such as press fitting. This roller
Reference numeral 42 denotes the drawer pin 25 in FIG. Timer low
The magnetized pattern is provided at equal intervals in the circumferential direction
The magnetic layer 41 on which the pattern is formed is provided.
In the loading state, the detection head 2
7 face each other. In such a configuration, the arm 45 is
When pivoted about, as shown in FIG.
The timer roller 26 moves along the arrow F or vice versa.
Move in the direction. After the tape cassette 1 shown in FIG.
In the hard loading state, search from the magnetic tape 2
Information is reproduced. That is, as shown in FIG.
-In the loading state, the motor directly connected to the supply reel
28 gives back tension to the magnetic tape 2
The take-up reel 4 is rotated by the take-up reel
Then, the magnetic tape 2 is caused to run in the forward direction. At this time,
The output head 27 is a magnetized pattern on the outer periphery of the timer roller 26 '.
And generates a pulse, and using this pulse,
In order for the frequency of this pulse to be constant,
Make sure that the tape 2 runs at a constant speed,
The connection motor 29 is controlled. Composite recording / reproducing by running magnetic tape 2
The cue head 37 (see FIG. 3) of the head 23 is a magnetic tape.
Scans the cue track 33 (see FIG. 2) on the
When the search information is reproduced by the cue head 37 of
The magnetic tape 2 stops. Next, take-up reel direct connection motor
29 to give back tension to the magnetic tape 2
The supply reel 3 is rotated by the supply reel
Then, the magnetic tape 2 is run in the reverse direction. This reverse run
During the row, the queue erase head 39 of the composite erase head 24 (FIG.
3) on the cue track 33 of the magnetic tape 2.
The recorded search information 34 is deleted. Search played
The information is recorded in a memory as described later.
Next, the title of the program recorded on the magnetic tape 2 is displayed on the screen.
Used to display. The screen display of the heading shows the tape cassette.
Knowing programs and their recording locations recorded in unit 1
When a search for the desired recorded program is instructed,
The search is performed in the loading state. This search ends
Or record and playback (this can be done without searching
Instruction immediately after loading the tape cassette)
In FIG. 1, the syringe is switched from the hard loading state.
Entry side inclined guide 8, Cylinder entry side width regulation guide 9 and
And tension pins 17 are moved along arrows A, B, and C, respectively.
Pull out the magnetic tape 2 from the tape cassette 1 while moving
Then, the state shown by reference numerals 8 ', 9', and 17 'is obtained. Also,
Cylinder exit side inclination guide 10, cylinder exit side width regulation guide
Do 11 also moves along arrows D and E, respectively,
Pull out the magnetic tape 2 from the tape cassette 1 and
The state shown by 0 'and 11' is obtained. Also, pinch roller 2
1 also moves along the arrow G, and the magnetic tape 2 is
And clamp it with 20. By the above operation, the tape path is set in the cassette.
The two-dot chain line extends from the exit guide 18 to the extraction pin 25 '.
As shown in the figure, the width restriction fixing
The solid line extends from the width regulating fixed guide 22 to the case
Up to the slot entrance guide 19 as shown by the two-dot chain line.
To the full loading state to record the program or
Playback of the recorded program is performed. In ejecting the tape cassette 1
Are the cylinder entrance side inclination guide 8 and the cylinder entrance side
Guide 9, tension pin 17, cylinder inclined guide on exit side
10. Cylinder exit width regulation guide 11 and pinch low
The la 21 operates in the reverse of the above and, together with this,
The magnetic tape 2 is taken up by the reel 3 or the take-up reel 4,
The tape path is in the hard-loading state shown by the solid line.
You. Then, the supply reel direct connection motor 28
The back tension is applied to the tape 2 and the detection head 2
Motor directly connected to take-up reel based on pulse signal from 7
29 is controlled so that the magnetic tape 2 runs at a constant speed in the forward direction.
Run. At this time, the search information is read from the memory,
The cue head 37 of the composite recording head 23 (see FIG. 3)
The supplied cue track 33 on the magnetic tape 2 (FIG. 2)
Reference). When the recording of the search information is completed, the magnetic tape 2
Stop once, and then take-up reel direct motor 29
Back tension is applied to the magnetic tape 2 and detected.
Based on the pulse signal from the head 27, the supply reel
The motor 28 is controlled so that the magnetic tape 2 is driven at a constant speed.
Riding in the opposite direction, by the amount required to record the search information
When running, the magnetic tape 2 stops. Then drawer
25 'and the timer roller 26' move in the direction opposite to the arrow F.
And the magnetic tape 2 is supplied to the supply reel 3 or the take-up reel 4.
And is accommodated in the tape cassette 1. Scold
Thereafter, the tape cassette 1 is ejected. As described above, the ejected tape cassette
In unit 1, according to the winding state of magnetic tape 2 in it
Recording position of the search information in the longitudinal direction of the tape is different.
Also, this recording position is at the supply reel 3 of the magnetic tape 2,
At or near the part between the reels 4
When you install the kit 1, it will be in a hard loading state
This search information is reproduced immediately and quickly. For this reason
Next, the tape cassette 1 is mounted on the magnetic recording / reproducing apparatus.
What kind of program is recorded on this tape cassette 1
To know where each program is recorded.
it can. FIG. 5 shows a signal system for recording and reproducing search information.
50 is a block diagram showing a recording / reproducing amplifier, 5
1 is a demodulator, 52 is a modulator, 53 is a nonvolatile memory, 5
4 is a character generator, 55 is a monitor, 56 is
Drive circuit, 57 is a system control circuit, 58
Is a recording / reproducing amplifier, 59 is a demodulator, and 60 is a modulator.
Therefore, parts corresponding to those in FIG. 1 are denoted by the same reference numerals. A tape cassette is mounted on a magnetic recording / reproducing device.
In response to the instruction from the system control circuit 57,
Then, the loading mechanism (not shown) operates, and as shown in FIG.
Hard-loading with a solid tape path
State. Next, the system control circuit 57
A constant back tension is applied to the supply reel
Supply the voltage to be applied to the magnetic tape, and
Supply the tape drive voltage to the tying motor 29 to
Run in the forward direction. At this time, the system control
The pulse signal is supplied from the detection head 27 to the circuit 57.
So that the frequency of this pulse signal is constant.
Reel direct motor 28 and take-up reel direct motor 29
The supply voltage to is controlled. This allows the magnetic tape
The running speed is constant. After the magnetic tape starts running, the cue head
When the search information is reproduced by C, the search information
Is amplified by the recording / reproducing amplifier 50 and demodulated by the demodulator 51.
After that, it is stored in the nonvolatile memory 53. Search information
Has been completed, and all of them have been written to the non-volatile memory 53.
Read from the nonvolatile memory 53
Is started. This search information is a character generator
It is converted into a character signal at 54 and supplied to a monitor 55.
Therefore, the monitor 55 displays the attached tape cassette.
Of each recorded program recorded in the program, recording start position
(Recording address), date, etc. are displayed.
You. The search information is written in the nonvolatile memory 53.
When the writing is completed, it is written to the system control circuit 57.
Only the end signal and the recording address of each recorded program are supplied.
As a result, the system control circuit 57
To the reel-direct motor 28 and the take-up reel direct motor 29.
Stop the supply of pressure to stop the magnetic tape, and then
Back tension on magnetic tape to take-up reel direct connection motor 29
Supply voltage to supply reel direct connection motor 28
Supply the tape drive voltage to run the magnetic tape in the opposite direction
And a queue via the head drive circuit 56.
The erase signal is supplied to the erase head 39. This allows the magnetic
The search information recorded on the tape is erased. Magnetic
The tape runs in the opposite direction by the same amount as when the search information was played
And the system control circuit 57
The voltage supply to the motor 28 and the take-up reel direct motor 29
Stop and stop the magnetic tape. Here, the magnetic tape is sequentially used for reproducing the search information.
Run this magnetic tape in the reverse direction by the amount scanned in the direction
For example, to make the system control circuit
57, which is provided for counting control pulses.
A known tape counting means may be used. Search information
When the magnetic tape is running in the forward direction,
The control pulse reproduced by the pad 36 is
System control via a recording / playback amplifier 58 and demodulator 59
It is supplied to the roll circuit 57 and is
Is counted up. Magnetic tape for erasing search information
The control head 36
A control pulse is output to the system control circuit 57.
Supplied, but the tape counting means counts down.
You. The count value is a magnetic tape for reproducing search information.
When the count value is equal to the count value before starting
To the reel-direct motor 28 and the take-up reel direct motor 29.
Stop the pressure supply. Thereafter, the magnetic tape is flow-loaded.
Status, playback of the desired recorded program, recording of a new program, etc.
When a new program is recorded,
The contents and the data of the recording position are stored in the nonvolatile memory 5.
3 is added to the search information. When ejecting the tape cassette,
In the hard loading state, the system
Circuit 57 is directly connected to the supply reel motor 28 and the take-up reel.
Supply the voltage to the sintering motor 29 as described above and
In the forward direction, and the nonvolatile memory 53
To send a read command signal. Thereby, the nonvolatile memory 5
3, the search information is read out, and the modulator 52, the recording / reproducing
Supplied to the cue head via the
Will be recorded. Read search information from nonvolatile memory 53
When the output is completed, the system control circuit 57
To supply reel direct connection motor 28 and take-up reel direct connection motor 29
Is stopped, and the magnetic tape is stopped. Next
Therefore, the system control circuit 57
To the motor 28 and the take-up reel direct connection motor 29 as described above.
Supply pressure to run the magnetic tape in the reverse direction,
Run in the opposite direction for the recording of the magnetic tape.
Then, the supply reel direct connection motor 28 and the take-up reel direct connection motor
To stop the magnetic tape by stopping the voltage supply to the
You. After that, as described above, the magnetic tape
Tape cassette and then the tape cassette
Is affected. FIG. 6 shows an example of the structure of the search information.
It is. The search information is composed of a digital signal.
As shown in (a), a synchronization pulse indicating the head position,
Digital data indicating the content of the recorded program and an end indicating the end
Acknowledgment signal. Also, this digital data
Is attached to the tape cassette as shown in FIG.
(No) indicating the recording order of the recorded programs to be recorded, the recording area
Start and end addresses, recording date and time, broadcast station
Channel number (such as from a video camera)
In the case of power, the effect is displayed), the contents of the recorded program, etc.
It represents. Here, the content of the recorded program is
Distinguish whether it is a port program or a movie program
Digital code for each content.
What is necessary is just to determine it beforehand and to input it at the time of recording. After this
External digital data is the device that the magnetic recording / reproducing device has
(Such as a clock device). Of recorded programs
For the address, write the address-only track on the magnetic tape.
To record the address signal in advance,
This address signal is reproduced during recording and reproduction to record the recorded program.
The recording position and the reproduction position may be determined. Also, this address
Struts are not dedicated, for example,
Racks are also used, and address signals are
Alternatively, it may be recorded by multiplexing with the lus. The method of using the search information is as described above.
To the program contents of the search information stored in the memory.
Digital data to be read and
It is converted to a character signal by the generator and becomes a heading on the monitor.
Screen display. If you want to play the desired recorded program,
The number (the number indicating the recording order)
By inputting through the input means, the recorded program
The magnetic tape is sent to the first address, and playback is performed from there.
Can be started. Control tiger
If address signals are multiplex-recorded in the
In FIG. 5, FIG. 6 stored in the nonvolatile memory 53
Playback from start address of (b) and control track
The received address signal is transmitted to the system control circuit 57.
And run the magnetic tape at high speed until they match.
It should be done. Also, on the monitor by the above search information
, The heading is displayed,
Since erasable locations can be determined,
Program recording can be performed. Without using an address signal, for example,
The rotation speed of the reel base when running the magnetic tape at a constant speed
From which, roughly, it is possible to detect the address
Wear. This is when the magnetic tape is running at a constant speed.
The rotation speed of the reel base varies depending on the tape winding amount.
This is because that. Therefore, as already mentioned,
When reproducing search information in the
Runs at a constant speed, so it is necessary to detect the rotation speed of the reel base.
Can determine the current approximate address. Also,
When fast-forwarding and rewinding in the hard loading state
, The rotation speed of the reel base and the detection head 27 (see FIG. 1)
From the detected pulse frequency, the magnetic tape when retrieving search information
Reel speed for the running speed of the reel can be detected.
The address at this time can be detected. Ad
If you want to increase the accuracy of
Since it is only necessary to be able to put out
It is sufficient to use the cueing signal or the like which is already used. As is apparent from the above description, the cute
The area where search information is recorded on the rack is a very small part
And nothing is recorded in the outer part. So, already
Cue of track width required for tape pattern
If trucks cannot be secured, the
Cut into the redundant part of the pattern
The part where search information is actually recorded even if a rack is formed
Is a short section, so this affects other signals.
It is insignificant to receive. Most likely as a redundant part
There is overlap recording of video signal recording tracks
Parts, i.e. audio tracks or controls
This is the part adjacent to the track. Example of forming a cue track as described above
Is shown in FIG.FIG. 7 shows an embodiment of a search information recording method.
It is a tape pattern diagram, as shown in the figure,Search
To record information 34, run the magnetic tape in the forward direction at a constant speed.
First, the image is projected by the cue erase head 39 (see FIG. 3).
A part of the overlap portion of the image signal recording track 32 is
Erase the desired length, then add a cue
In step 37 (see FIG. 3), the search information 34 is recorded.
Thus, the search information 34 is stored in the video signal recording track 32.
It is recorded by biting into the video signal, but this part
Overlapping part, and only a small part is short-term
Since it is only intermittent, the degradation of the reproduced video signal is almost
Not really. When recording video signals, the search information is
As described above, they are held in memory,
Recording can be performed as before, including the loop portion. Search information
When playing back, the cue head 37 sends search information
The video signal is also reproduced slightly, but the search information is digital.
6A, the synchronization signal shown in FIG.
If it is determined, the search information can be detected without error.
Is quite possible. In the magnetic recording / reproducing apparatus to which this embodiment is applied,
The tape cassette used to record the program
Used for program reproduction with magnetic recording / reproducing device without applying the embodiment
Then, after that, the magnetic recording / reproducing using this embodiment again
When used on the device, the recording position of the search information is unknown
there is a possibility. In such a case, apply this embodiment.
When a tape cassette is attached to the magnetic recording / reproducing device
As described above, the magnetic tape enters the hard loading state.
The group runs at a constant speed and starts playing the search information,
Search information is reproduced even if the magnetic tape runs for a certain period of time.
If not, wrap the magnetic tape
And then return to the magnetic tape until the search information is reproduced.
The vehicle is driven at a constant speed in the forward direction. Such control is not
This is performed by the system control circuit 57 (see FIG. 1).
You. Also, in a magnetic recording / reproducing apparatus to which this embodiment is not applied,
For recorded programs, insert the tape cassette
Attached to the magnetic recording / reproducing apparatus to which the embodiment was applied,
After the search information is played back from the
Input the program contents for the recorded program by the input
May be stored. In addition, unused tape cassettes
When used, control pulse is not reproduced
Therefore, the reproduction operation of the search information is prohibited. As described above, the embodiments of the present invention have been invented.
The description is not limited to only this embodiment. Sand
In the above embodiment, FIG.7As shown inSearch information 3
4 in the video signal recording track 32Audio tiger
Check 31 sideRecorded at the end ofBut control track
30 sideRecorded at the end ofYou may. In the above embodiment, the hard-flow
The tape drive in the tape state was performed by the reel motor.
However, of course, the capstan is driven, and the capstan is
You may make it rotate at a constant speed. In this case, the detection
The detection pulse of the head 27 is used for reproducing search information.
It is not necessary to use the tape to run at a constant speed,
When fast-forwarding or rewinding, drive the reel.
At this time, the detection head 27 is used for the constant speed running of the magnetic tape.
Are used. In the above embodiment, the recording and reproduction of the search information
Therefore, when the tape cassette is mounted,
It takes time, but the digit of about 100 bits per program
Tal data is enough to achieve the purpose,
So, if you record 20 programs per tape cassette,
However, the search information is about 2 kilobits,
-The head can record and reproduce signals of about 10 KHz.
1 second including the rise and fall time of the tape speed
Recording and reproduction of the search information are possible below. This thing
In about 2 seconds, including the reverse running direction of the magnetic tape,
Quit and give users a feeling of waiting particularly long
There is no. [0042] As described above, according to the present invention,
In the longitudinal direction of the video signal recording track on the magnetic tape
edgeIncluding at least part ofAnd audio tracks
Outside areaWith digital signalsBecause we recorded your search information,
Enables empty recording areas that do not substantially interfere with video signals
The search information can be recorded using the tape cassette.
When the tape cassette is mounted on the magnetic recording / reproducing device,
Shows what programs are recorded in which positions
You can know.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a configuration diagram showing a tape traveling system of a magnetic recording / reproducing apparatus according to one embodiment of the present invention. FIG. 2 is a tape pattern diagram showing a reference example of a search information recording method. FIG. 3 is a plan view showing a specific example of a composite recording / reproducing head and a composite erasing head in FIG. FIG. 4 is a cross-sectional view showing a specific example of a drawer pin, a timer roller, and a moving means thereof in FIG. FIG. 5 is a block diagram showing a signal system for recording and reproducing search information. FIG. 6 is a schematic diagram illustrating a configuration of search information. FIG. 7 is a tape pattern diagram showing an embodiment of a search information recording method. [Description of Signs] 1 Tape cassette 2 Magnetic tape 3 Supply reel 4 Take-up reel 5 Cylinder 23 Composite recording / reproducing head 24 Composite erasing head 25, 25 'Pull-out pins 26, 26' Timer roller 27 Detection head 28 Supply reel direct connection motor 29 Take-up reel direct connection motor 30 Control track 31 Audio track 32 Video signal recording track 33 Cue track 34 Search information 35 Audio head 36 Control head 37 Cue head 38 Audio erase head 39 Cue erase head 53 Non-volatile memory 54 Character generator 55 Monitor 57 System control circuit

Claims (1)

(57) [Claims] A helical scan type magnetic recording / reproducing apparatus which records a video signal on a magnetic tape by a rotating head, or reproduces a video signal from a magnetic tape, wherein the video signal is a track of a video signal recording track in an oblique direction on the magnetic tape. Audio signal recording means for recording an audio signal on an audio track in the longitudinal direction of the magnetic tape, which is recorded at an intermediate portion in the longitudinal direction, and at least an end in the longitudinal direction of the video signal recording track.
Part of the audio track, and
A magnetic recording / reproducing apparatus, comprising: search information recording means for recording search information by a digital signal .