JPS59139126A - Recording device of information signal - Google Patents

Abstract

PURPOSE:To form a correctly inclined track without vibrating an electromechanism converting element and a rotary head at the recording of data in a tape travelling at an optional speed so as to form an inclined track having the same inclination as that formed on the tape travelling at a standard speed. CONSTITUTION:During waiting, a switch 41 is turned to a contact (c) side and a head driving signal Eo obtained from an output terminal 24 consists of only tape phase compensating voltage Ephi. When the switch 41 is turned to a contact (b) side at time T1, the signal Eo becomes a signal obtained by adding a signal Ef having inclination corresponding to speed information to the signal Ephi. When the switch 41 is turned to the contact (c) side again at time T2, the signal Eo becomes a signal obtained by adding voltage gradually changing to an initial value by a time constant decided by the capacitance C of a capacitor 43, the resistance value R1 of a resistor 44 and the output impedance of an operational amplifier 40 to the signal Ephi. Therefore, the electromechanism converting element and the rotary head are gradually displaced at the time close to the contact with waiting before and after a recording period T1-T2, so that vibration such as parasitic oscillation and overshooting is not generated and an inclined track with a correct pattern is formed.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an information signal recording apparatus for recording information signals such as video signals and audio signals on tape.

BACKGROUND TECHNOLOGY AND PROBLEMS There has long been a demand for VTRs to freely change the tape running speed and freely reproduce slow-motion and fast-motion images, and many inventions and ideas have been made in response to this demand. Ta. Among them, for example, according to the dynamic tracking technology proposed by the present applicant, various variable speed reproduction images can be obtained by performing variable speed reproduction at an arbitrary tape running speed.

However, when considering the degree of freedom on the recording side of a VTR, the current situation is that there is almost no degree of freedom in controlling the time. For example, if you wanted to record a short recording part and synthesize it to create a recording tape of continuous video signals, conventionally you would use VTR electronic editing methods, that is, assembling and inserting methods. I had no choice but to do this. Of course this is a pre-roll (rewind)
, phase matching (address matching) and framing (sur?lock)
It requires complicated processes such as checking and review (check playback).

That is, for example, in order to record just one frame of video signal, it is necessary to move the tape back and forth over a tape length of several seconds, which increases mechanical stress on the tape. This inevitably entailed a loss of time. Due to this restriction, at present, for example, when trying to synthesize the recording of each frame of a video signal over a length of 10 seconds, the VTR's color frame phasing time and minimum pre-roll time are each 5
If it is expressed in seconds, the tape will be subjected to the stress of passing over 600 times, and the recording time will be approximately 2 hours.

A further problem is that when you want to record a certain part of a video signal and issue a recording command, it does not start recording immediately, but takes several seconds to tens of seconds, which makes real-time recording difficult. It is no exaggeration to say that it is almost impossible.

Therefore, it is very difficult to use a VTR for creating master themes for video discs, creating animation images, or creating still image files, which have been put into practical use in recent years. This was a major hindrance to its use in other applications.

On the other hand, several types of VTRs have been proposed and manufactured in the past that record video signals on tape at special tape running speeds and recording timings even if the quality of recorded images is quite poor. One of these is a rapid tape drive recording system that has been used in consumer 4-tuple VTRs. Rather, this is an attempt to omit circuits for phase adjustment, address matching, etc., and somehow obtain a recording surface that is close to the normal editing surface. This is a method in which, after receiving a recording command, a rotary capstan or the like is instantly pressed onto the tape, the tape speed is rapidly increased to the standard speed, and the tape is recorded in bits and pieces.

However, this method naturally does not allow highly accurate recording due to variations in tape tension and speed.
It can be said that this method is no more than a simple method due to image omissions, phase shifts, and image quality deterioration.

The other is a so-called surveillance VTR.
This is a method that is often used. For example, this uses a step motor or the like to drive the cazostan to perform intermittent recording while driving the tape intermittently, but at the same time, a movable tape guide or drum shaft movable mechanism is used to correct the recording angle. It is something to do.

This approach has difficulties in maintaining mechanical or structural accuracy, but also has more fundamental problems. That is, because there is a lack of consideration or means to make the slanted track pattern completely equivalent to that at standard tape speeds, the resulting slanted track lean will not match the standard slanted track pattern. becomes something different.

(5) However, when such VTRs are used only for monitoring purposes, accuracy, image quality, and standards are often not required, as it is only necessary to see the reproduced image when an abnormality occurs, and this is not suitable for practical use. That's why.

Therefore, the present applicant has previously proposed an information signal recording device that can reliably record information signals such as video signals on a tape at any timing and at any tape speed.

Referring to FIG. 1 below, a specific example of such an information signal recording device (an example to which SMPTE type $c type VTRK is applied)
will be explained in detail. (1) is a magnetic tape, which is guided to be wound diagonally in an Ω winding on a tape guide drum (2). A control signal is recorded in advance on the side edge of the tape.The corner of this winding has a value close to 3600.
1) state of winding around the tape guide drum (2);
In other words, the slope of the winding, the angle of the winding, and the angle of the pair of slopes are
5) and (6).

The tape guide drum (2) is composed of a rotating upper drum (3) and a fixed lower drum (4). (7) includes a sync separation circuit (15a) that separates a vertical sync signal (60 Hz in the case of the NTSC system) from one rotating magnetic t6) axially expanded/contracted video signal). .

θ″I) The circuit for the bald ram motor (9) is the circuit.

The drum motor (9) has signal generators (magnetic poles (magnetized magnet wheels) and magnetic heads ( For example, a thin-film magnetic flux detection head) is provided, and these signals are circuit α
supply to mosquitoes. Also, the vertical synchronization signal from the synchronization separation circuit (15g) of the processing circuit 0 is supplied to the servo circuit aη, and each signal from the signal generator of the drum motor (9) is reliably locked to this vertical synchronization signal. As such, the rotation of the drum motor (9) is controlled by this servo circuit <171. In this case, the rotation of the upper rotating drum (3) is prevented from fluctuating due to the running speed of the tape (1).

◇→ is the input terminal for the speed command signal that commands the running speed of the tape (1), which is generated when the operator operates the push button of the speed controller. - By being attached to the rotating upper drum (3) via a mechanical transducer (8), it can be displaced in a direction substantially perpendicular to the scanning direction. (9) is a drum motor that rotationally drives the rotating upper drum (3), and is attached to the drum (3) via an axis α.

0 is the control magnetic head (wound type magnetic head)
It is. α■ is a capstan, and α→ is a capstan motor that rotationally drives this capstan α axe. 04 is a pinch roller that rolls into contact with the capstan α via the tape (1). Qi f(1) is these capstan α
The tape (1) is held between φ and the pinch roller α, and as both rotate, the tape (1) is made to run in the direction of the arrow α at an arbitrary running speed depending on the number of rotations of the motor (B).

In the case of the double capsun system, the tape (1) is made to run in the forward and rain direction at an arbitrary running speed.

0 is a time axis expansion/contraction processing circuit, to which an input video signal from an input terminal oQ is supplied. This circuit (15) is connected to the input video signal (time signal) supplied to the input terminal OQ and is supplied to the microprocessor (1) and tape running speed control pulse generator (1) to control each of them. The second pulse is supplied to a servo circuit 91) for the capstan motor 0].

Control signals from microprocessor 0 are also supplied to the pulse generator shaft.

(A) is a position detector for detecting the running position of the tape (1) (running position in the longitudinal direction of the tape).
The reproduction control signal from the control magnetic head 01) and the frequency signal generator C magnetic pole (for example, 96 poles per rotation) which is provided on the capstan motor 0→ and generates a frequency signal according to the rotation of the motor α1, that is, the capstan 020. The frequency signal from the magnetic head (for example, a thin film magnetic flux detection head) is supplied to the position detection circuit (c). In this position detection circuit, the rough running position of the tape (1) is detected by the control signal, and the fine running position of the tape (1) is detected by the frequency signal. The position detection signal from the position detector (a) is supplied to the microprocessor 01 and the circuit (9) and the circuit (c).

In addition, the time axis expansion/contraction processing circuit OQ receives a frequency signal from the frequency signal generator 1 to the capstan motor, and performs time axis expansion/contraction processing of the video signal according to the frequency. ) is used to correct the phase of the entire video signal.

2) applies a drive signal from the output terminal (c) to the electromechanical transducer (8) attached to the rotating magnetic head (7) to move the head (7) in a direction approximately perpendicular to the scanning direction thereof. This is a head drive circuit that displaces the head. In this head drive circuit, the drumcer receives the flyback pulse from the circuit (I), and based on this, creates a triangular wave drive signal with a fixed phase, which generates a frequency signal for the capstan motor. The inclination of the triangular wave drive signal is controlled by receiving the frequency difference signal from the
) to control the offset level of the triangular wave drive signal.

Next, the recording timing control circuit (7) will be explained.

(C) is a modulator/converter and recording amplifier that receives the video signal from the time axis expansion/contraction processing circuit αQ, frequency modulates the luminance signal thereof, and low frequency converts the carrier color signal. Further, the mixed signal is amplified and supplied as a recording signal to the rotating magnetic head (7) from the output terminal (c) via a rotating transformer (not shown).

The amplifiers (modulator/converter and recording amplifier) are controlled by the ff-) signal from the gate signal generator, thereby controlling the recording timing and recording period. This dart signal generator is also controlled by a microprocessor aI. (C) and (2) are framing discrimination circuits, of which (C) is an input terminal (a processing circuit αυ can also be used). B) is a color framing discrimination circuit that receives a video signal from the input terminal (IQ (processing circuit 05 is also possible) and discriminates its color framing.These discrimination circuits (C),
The discrimination output of (A) is supplied to the microprocessor (1!I. Also, the vertical synchronization signal from the synchronization separation circuit (15a) of the time axis expansion/contraction processing circuit α$ is supplied to this microprocessor 0I. .

Next, the operation of the video signal recording apparatus shown in FIG. 1 will be explained with reference to FIG. 2 as well. The tape (1) is run at a speed lower than the standard speed, that is, the standard speed sn is -, and the video signal from the input terminal 0Q is transferred to the tape (1).
Consider the case of recording. In Fig. 2, (1) indicates the same magnetic tape as in Fig. 1, and CTL indicates the tape (1).
@T indicates control signals recorded at regular intervals in advance.
shows the inclined track (indicated by a solid line) when the driver f(1) is running at the standard speed Sn, and T' is the tape (
1) shows the inclined track (indicated by a dashed line) when the vehicle is traveling at one standard speed.

In this video signal recording device (VTR), when the running speed of the tape (1) is -Sn, the tape (1) is
The video signal is recorded so as to form an inclined track T on the tape (1) with the same inclination and the same length as the inclined track when the tape (1) is running at the standard speed Sn. In FIG. 2, α indicates the running direction of the tape (1), and β indicates the scanning direction of the head (7).

Therefore, a speed command signal is supplied to the input terminal 0→ to the effect that the running speed of the train 7' (1) is 18n (m can be arbitrarily selected). Thus, the f pulse generator (■) generates a pulse with a frequency Fn that is twice the frequency of the pulse generated when the tape (1) is running at a standard running speed, and this pulse is generated by the capstaff Sur-2 circuit (H). ). Thus, the tape (1) is driven to run by the capstan (2) and the pinch roller α→ so as to continuously run at a speed of LSn. Running speed of this tape (1) 1
Sn is a pulse generator from the microprocessor α9 (
It will not change unless a control signal to change the speed is supplied to (e).

In this case, the capstan is driven and controlled within a tape speed range that is lower than the standard recording/reproducing tape speed, thereby causing movement from a position near a recorded track to the next adjacent recording track position. At this time, the tape moves to the next track position in a short time, does not exceed or overshoot the standard track spacing, and (13) tape speed before and after reaching the adjacent track position is the standard. Capstan control is performed to target a tape speed that can be kept at a constant tape speed (including static) that is sufficiently lower than the recording/reproduction tape speed.

In addition, in the time axis expansion/contraction processing circuit α, exactly one unit signal of the input video signal, that is, one field (or one frame is also possible) is recorded on each inclined track T in FIG. As such, the human video signal is decompressed and the tape (
1) The capstancer responds to the error signal from the circuit so that the arrival position of the tilted track T with respect to the upper control track CTL and the video signal to be recorded on the tilted track T coincide with each other. Based on this, the phase of the decompressed video signal is controlled.

In addition, the head drive circuit (c) includes a drum serve circuit α, a frequency signal generator for the capstan motor (g), and a capstan motor (c) to ensure that the head (7) scans the inclined track T. It is controlled by circuit H to drive the electro-mechanical conversion element (8). The head (7) scans a certain inclined track T to record a video signal of a certain field (14), and then scans the adjacent inclined track T.
When recording a video signal of another field by scanning, the pulse generator (a) is activated by the microprocessor 0 only if the tilted track T cannot be scanned by the displacement of the head (7) alone. As a result, the running speed of the tape (1) changes slightly from -Sn, and the head (7) moves to the target inclined track T.
to be able to scan. Therefore, the running of the tape (1) is controlled so that it can reliably scan a predetermined inclined track T by the possible range of displacement of the head (7).

In the modulator/converter and recording amplifier (c), the on/off of the recording amplifier is controlled by r- from the dirt signal generator (a).
The output signal (which is controlled by the microprocessor α field) controls the supply/non-supply of the time-axis-stretched video signal from the time-axis expansion/contraction processing circuit 0υ to the head (7). That is, among the video signals from the processing circuit (b), if an integer field close to m is
The video signals of the fields are extracted one field at a time and supplied to the head (7).

In addition, when recording a color video signal on the tape (1), a color framing discrimination circuit is used so that the color video signal is sequentially recorded on each inclined track T while maintaining the continuity of color framing. Based on the determined output, the processing circuit 05 selects the video signal field by field.

Furthermore, when recording a monochrome video signal on the tape (1), an odd-even discrimination circuit is required so that the monochrome video signal is sequentially recorded on each inclined track T while maintaining the continuity of the odd-even framing of the field. Based on the discrimination output in (c), the processing circuit selects video signals from the IFJ in units of fields.

FIGS. 3 and 4 are vector diagrams showing the tape speed at the moment of recording and the fact that it is possible to perform normal and lean restoration recording.

Needless to say, the standard recording speed vector vr is a composite vector of the head scanning speed vector vh and the tape speed vector V. Now, suppose that there is an arbitrary recording speed vector vr at an arbitrary position, this is the speed correction vector Δf
By adding , vector (v) is obtained.

On the other hand, the positional deviation vector ΔV on the tape (1) can be corrected by combining the video signal phase component (Δ?F) and the rad displacement amount (ΔP) in the vertical direction of the track.

Furthermore, as can be seen from FIG. 4, the aforementioned Δf is equal to ΔP and Δ
It is obtained by combining the time differential values of V. Here, thus,
Instead of the inclined track T' of the tape (1) at a certain speed (lower than the standard speed), the same inclined track T can be formed on the tape (1) at that speed as at the standard speed.

Next, we will discuss the frictional force in the tape running system. This problem fundamentally undermines the possibility of controlling chive tension and tape guiding, especially when the tape is stationary or retrograde.

For example, suppose that (17) the tape is running in the forward direction at the SMPTg tie fl CW VTRK. At this time, the tension T(θ) distribution on the drum can be calculated as follows.

μθ2 T(θ)=To, e(”0-;) However, To: Tension at tape entrance μ: Fixed part friction coefficient θ+nax: Full winding angle At the moment when the tape runs in the opposite direction, the tension T( The distribution changes completely as shown in the following equation.

μθ2'r(θ)='rt-62θmaxThen, what exactly is the tension distribution from the moment the tape comes to rest until it runs in the opposite direction? Simply put, it can be said to be a state that can produce an infinite number of distribution curves.

In other words, when an elastic body in contact with a fixed friction surface is strained by the frictional force, the strain distribution is within the range of the maximum strain slope (18) determined by the equivalent frictional force and the equivalent modulus of elasticity. This is because it has the property of preserving a free distribution state.

For example, the distribution at the moment when the tape comes to rest should belong to one of the above distribution calculation formulas. However, if one or both of the tensions on the entrance side or the exit side of the tape to the drum change as the tape stops running, how will the tension distribution along the way change? However, it is not easy to obtain a new distribution curve that continuously connects the given inlet and outlet tensions. For example, it is appropriate to think of this in terms of the concept that one corner of a sand pile made of smooth sand collapses and another sloped part is created, and as a result, it is possible to correspond to the tension on both sides.

In other words, a continuum whose shape is held by solid friction exhibits a typical hysteresis phenomenon, and as a result, its shape as a continuum can have infinite uncertainty (diversity). Just as the shape of a sand mountain shows its countless history. It is also conceivable that these hysteresis will be affected by external micro-vibration disturbances, and return to the ground state someday, for example, in the same way that a sand mountain is flattened.

Therefore, if you want a tension distribution on the drum surface that is exactly the same as that during standard speed recording, the following conditions must be met. That is, the direction of tape friction must not be changed even slightly during or immediately before recording. To ensure this, it is necessary to record while the tape is running at a low speed, or to stop the tape gradually without overshooting, and to record immediately before the tension is relaxed.

By the way, it is generally believed that even if you try to record signals on a tape that is in continuous low-speed motion, it is unlikely that you will be able to record it properly, so it was usually thought that the standard speed would be when the tape was at a complete standstill. Although the idea of recording while moving such a tape at low speed had not been proposed in the past, the present invention has made this possible.

Note that the tape is not limited to running at a constant low speed, but may be run intermittently. In this case, only a single block section in one field, frame, or other signal sequence is recorded in the flow of the signal to be recorded. After recording a single recording, recording should be stopped immediately, or at least there should be a pause period. Furthermore, at least after the recording of a series of signal blocks is completed, the cazostan drive is immediately commanded to stop, thereby stopping the tape at least within a distance shorter than the track pitch during standard speed continuous recording, and stopping the tape at that position. Waits for command to record the next track. At this standby position, after waiting in playback or non-recording state,
The next track is recorded by the next recording command.

Further, the number of rotary heads (for example, two), the angle at which the tape is wound around the tape guide drum (for example, 180'), etc. are not limited to the above-mentioned embodiments, and are arbitrary.

According to the information signal recording device described above, it is possible to reliably record an information signal such as a video signal on a tape at any timing and at any tape speed.

By the way, in the above-mentioned information signal recording device, (21
) A sawtooth wave head drive signal is supplied from the head drive circuit (b) to the electro-mechanical conversion element (8) even during standby other than when recording is performed to form an inclined track on the Q7' (1). That's what I was doing. Therefore, at the beginning of recording to form an inclined track on the tape (1), the displacement of the electro-mechanical transducer (8) is large as shown in FIG. In other words, the rotating head causes parasitic vibration or overshoot,
The inclined track also vibrates accordingly and is not formed in the correct pattern, which is undesirable.

Purpose of the Invention In view of the above, the present invention provides an information signal recording device as described above, in which an inclined track is formed on a tape running at an arbitrary speed by a rotating head, and an inclined track is formed on a tape running at a standard speed. The purpose of the present invention is to propose a device that can form a correct pattern of inclined tracks without causing vibration of the electro-mechanical transducer and the rotating head when recording information signals so as to form inclined tracks of the same inclination. .

(22) Summary of the Invention The present invention provides a rotary head attached to an electro-mechanical transducer that can be displaced in a direction substantially perpendicular to the scanning direction, and a head drive circuit that supplies a head drive signal to the electro-mechanical transducer. and is configured to record information signals on a tape running at an arbitrary speed using a rotating head so as to form an inclined track having the same inclination as an inclined track formed on a tape running at a standard speed. In the information signal recording device,
Phase information and speed information of the tape are supplied to the head drive circuit, and during recording, the head drive circuit sends a first signal at a level corresponding to the phase information in accordance with the speed information, and during recording standby, the head drive circuit A head drive signal consisting of only the first signal is obtained from the drive circuit, and the head drive signal is supplied to the electro-mechanical conversion element.

According to the present invention, in the above-mentioned information signal recording device, the rotary head creates an inclined track having the same inclination as an inclined track formed on a tape running at a standard speed on a tape running at an arbitrary speed. When an information signal is recorded to form a track, the electro-mechanical transducer and the rotary head do not vibrate, and a correct pattern of inclined tracks can be formed.

Embodiment An embodiment of the present invention will be described below with reference to FIG. 6, but only the head drive circuit will be explained, and FIG. 1 and its explanation will be used for the other configurations. (c) is a rotating magnetic head (7
) is a head drive circuit that applies a drive signal from an output terminal (c) to an electro-mechanical conversion element (8) attached to the rotary head (7) to displace the rotary head (7) in a direction substantially perpendicular to its scanning direction. A low frequency error signal eφ from the capstan servo circuit Q) is supplied to the input terminal 01) as the phase information of Qi f(1), and this is supplied to the low pass filter 0) via the amplifier 0→ to generate a high frequency signal. The components are removed, and a first signal (tape phase correction voltage) Eφ corresponding to the phase information of the tape (1) is obtained, which is supplied to the synthesizer (b). Amplifier 0→adjusts the U)C level and gain of the input signal.

A frequency difference signal e from the frequency double generator of the cab stan motor 010 is supplied to the input terminal (g) as speed information of the chinier' (1), and this is sent to the intermittent integration circuit 0'i5 via the amplifier (c). and integrated. The integrated output is supplied to a low-pass filter (b) to remove high-frequency components to obtain a second signal Ef (sawtooth wave voltage) whose slope corresponds to the speed information of Qi f(1), which is synthesized. The head drive signal (voltage) go is outputted to the output terminal (c) after being amplified by the amplifier (a).

In the amplifier (G), the DC level and gain of the input signal are adjusted.

Next, this intermittent integration circuit @ will be explained.

01 is an operational amplifier whose non-inverting input terminal is grounded,
Its inverting input terminal is connected to the movable contact a of the switch αη. Switch 0]) fixed contact input resistor @'4
It is connected to the output side of amplifier 0→ through.

A return (2
5) Return capacitor 0→ is connected. Further, the output terminal of the operational amplifier 01 is connected to the fixed contact C of the switch 61) via a feedback resistor. The output terminal of operational amplifier 00 is connected to the input side of a low-pass filter (to).

Switch 0]) connects the input terminal - to the y-t signal generation circuit (
When a dart signal indicating that recording is in progress is being supplied from the motor vehicle, the movable contact a is switched to the fixed contact side, and during standby, the movable contact a is switched to the fixed contact C side. From time T1 to time T, when the movable contact a of the switch 0 is switched to the fixed contact side, the second signal E is the turret W'el+A.
It becomes o. However, C is the capacitance of the capacitor, and R1 is the resistance value of the resistor (6).

Further, AO is an initial value.

Next, the operation of the circuit shown in FIG. 6 will be explained.

During standby, the movable contact a of the switch O) is switched to the fixed contact C side, so the head drive signal IO obtained at the output terminal (c) consists only of the first signal (low frequency voltage) Eφ. .

Next, at time TI, when the movable contact a of the switch 61) is switched to the fixed contact I, the output terminal (c)
6) Head drive signal (voltage) Eo is the first signal E
A second signal (layered wave voltage) E is applied to φ.

Next, at time T1, when the movable contact a of the switch θη is switched to the fixed contact C side again, the head drive signal E0 obtained at the output terminal (c) is converted to the first signal Eφ, which is connected to the capacitor 0. The initial value A is determined by the capacitance tC, the resistance value RI of the resistor 04, and the output impedance of the operational amplifier 01. This is the result of adding a voltage that gradually changes toward .

Therefore, the electro-mechanical transducer (8) and the rotating head (7)
) is the recording period T1 to T!, as shown in FIG. Since it is gently displaced near the contact point with the standby before and after, and does not displace greatly, parasitic vibrations, vibrations such as over-shoots do not occur, and a correct sloped track of the main turn is formed. be able to.

Effects of the Invention According to the present invention described above, in the information signal recording apparatus described above, the rotary head can form an inclined track on a tape running at an arbitrary speed and a tilted track formed on a tape running at a standard speed. When recording information signals to form inclined tracks with the same inclination, the electro-mechanical conversion element and the rotary head do not vibrate, and it is possible to form inclined tracks with a correct pattern.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an example of an information signal recording device previously proposed by the applicant, FIGS. 2 and 3 are 79-plane diagrams of inclined tracks for explaining the device, and FIG. A vector diagram for explaining this, FIG. 5 is a curve diagram showing the displacement state of the electro-mechanical conversion element and rotary head of the device shown in FIG. 1, and FIG. 6 is a block diagram showing the essential parts of an embodiment of the present invention. 7 is a curve diagram showing the displacement state of the electro-mechanical conversion element and the rotary head of the device of FIG. 6. (1) is the tape, (2) is the tape guide drum, (7) is the head, (8) is the electro-mechanical conversion element, (9) is the drum motor, Ql) is the control head, α2 is the capstan, α→ is the capstan motor, 04 is the pinch roller, α is the time axis expansion/contraction processing circuit, αη is the drum motor circuit, (to) is the microprocessor, 04 is the pulse generator for tape running speed control, and Qρ is the capacitor. Zostan motor servo circuit, (C) is a head drive circuit, (C) is a modulator/converter and recording amplifier, (C) is a framing discrimination circuit, (C) is an odd-even discrimination circuit, and (C) is an odd-even discrimination circuit. is a color framing discrimination circuit, 2) is a recording timing control circuit, 04 is a synthesizer, 0'I) is an intermittent integration circuit, (/4◇
is a switch. (29) Figure 5 Figure 7 T117!

Claims (1)

[Claims] The rotary head is provided with an electro-mechanical transducer that is movable in a direction substantially perpendicular to the scanning direction, and a head drive circuit that supplies a head drive signal to the electro-mechanical transducer. In this information signal recording device, an information signal is recorded on a tape running at an arbitrary speed so as to form an inclined track having the same inclination as an inclined track formed on a tape running at a standard fishing speed. and supplies the phase information and speed information of the tape to the head drive circuit, and during recording, the head drive circuit sends a first signal with a level corresponding to the phase information and a second signal with a slope corresponding to the speed information. The head drive signal is superimposed and during recording standby, a head drive signal that spreads only from the first signal is obtained from the head drive circuit, and the head drive signal is supplied to the electro-mechanical conversion element. Information signal recording device.