JPH0457212A - Information signal recording and reproducing device - Google Patents

Abstract

PURPOSE:To realize the recording and reproducing device of an information signal with high stability and high reliability by controlling a displacement amt. of a rotary head based on a position signal of the rotary head generated in corresponding to an absolute position of the rotary head with a reference of a tape reference edge. CONSTITUTION:When an operation mode for a mode input circuit 1 is set as a recording operation mode under the traveling state of a magnetic tape T at a normal tape traveling speed or a reproducing operation mode, a movable contact point (v) of a changeover switch 26 in a head inclination correcting control circuit 4 is changed over to the side of a fixed contact point (c) by a changeover control signal to be supplied from a system control circuit 2, and a position of the rotary head is settled with a reference of a reference position voltage generated by a reference position voltage generating circuit 25. When the operation mode for the circuit 1 is set as a recording operation mode or a reproducing operation mode under the stopping state of the magnetic tape in its travel, the absolute position of the rotary head is settled with a reference of a triangular wave voltage generated by a triangular wave generating circuit 24.

Description

[Detailed description of the invention] [Industrial application field]

The present invention relates to an information signal recording/reproducing device.

[Conventional technology]

A video tape recorder (VTR) is a typical example of an information signal recording and reproducing apparatus that uses a rotary head to record and reproduce information signals on a tape-shaped recording medium. It is well known that the image quality and functions of today's VTRs have greatly improved due to the dramatic advances made since their development. VT
Development of R is currently underway. On the other hand, VTRs, which use a rotating head to record and play back information signals on a tape-shaped recording medium, can be used for continuous recording, such as recording the contents of television broadcast programs or recording video signals captured by a television camera. The tape-shaped recording medium of the VTR was generally used for recording images, but we focused on the fact that the tape-shaped recording medium in the VTR had a large storage capacity. Attempts have also been made to use VTRs, for example, as storage devices or other components in digital information processing devices. ■Problems to be Solved by the Invention] By the way, a VTR can be used as a component of a digital information processing device, for example, as an "external auxiliary storage device for a computer" or as a computer that records images of computer graphics sequentially at the end of calculations and records them. When used in devices such as "devices that produce moving images by continuous playback," recording of information signals on a tape-shaped recording medium is performed in units of one recording trace (one track) to several tracks. Therefore, in order for a VTR to be used as a component of a digital information processing device, the information recording operation, for example, in units of one track to several tracks, must be highly stable, as described above. It is also necessary to ensure that this is achieved with high reliability. In a recording and reproducing apparatus that records and reproduces information signals on a tape-shaped recording medium using a rotating head, recording is performed on a specific track on the tape-shaped recording medium, or recording is performed on a specific track on the tape-shaped recording medium. If you wish to rewrite the contents,
The tape-shaped recording medium is rewound before the scheduled recording start position by pre-rolling, and during recording, the tape-shaped recording medium is fast-forwarded from the rewound position to pass the scheduled recording start position at a predetermined tape feeding rate. so that recording is performed on a predetermined number of tracks from the scheduled recording start position. ■Two methods: stopping the tape-shaped recording medium at the position where recording is to be performed using control pulses and rotational position control of the capstan motor, and recording on the stopped tape-shaped recording medium with a rotating head. has traditionally been practiced. Method (2) described above is a method that is implemented in the assembly storage/insert recording mode in the editing function of a VTR. Since it is necessary to repeatedly rewind and feed the medium in the forward direction, this places a burden on the tape running system mechanism and the tape-shaped recording medium, so it is not suitable when recording operations are frequently performed. In addition, the position of the track on which recording is performed is determined by the relative movement between the running tape-shaped recording medium and the rotating head, so it is difficult to set the track position with high precision, and furthermore, it is time consuming for pre-roll etc. This poses various problems, such as the inability to shorten the recording time interval. In addition, method (2) does not require the rewinding operation required in method (2), and also because the recording operation is performed while the tape-shaped recording medium is stopped. This method has the advantage that it does not place a large burden on the traveling mechanism and the tape-shaped recording medium, and furthermore, it is easy to set track positions with high precision. A tape-shaped recording medium in which the track pattern recorded on the tape-shaped recording medium runs at a predetermined running speed because the recording operation is performed by a rotating head on the tape-shaped recording medium in a stopped state. Since the track pattern recorded and formed in accordance with the rotation locus of the rotating head will be different from the track pattern recorded in the above, the tape-shaped recording medium on which the information signal has been recorded by the method (2) is run at a predetermined running speed. If you play the track with the head turned on, the rotating head will not be able to accurately track the track, and
Tracks recorded by this method (①) and tracks formed on a tape-shaped recording medium while running at a predetermined running speed are recorded in a state in which they are mixed on the same tape-shaped recording medium. It is difficult to use it.

[Means to solve problems]

The present invention provides a tape-shaped recording medium running at a predetermined running speed, in which a record trace of an information signal similar to the record trace of an information signal recorded and formed corresponding to the rotation locus of a rotary head is formed on a tape-shaped recording medium running at a predetermined running speed. so that the recording is formed at a predetermined recording position on the shaped recording medium by the rotation locus of the rotary head,
Means for controlling the rotation locus of the rotary head during the traveling stop recording operation based on the position signal of the rotary head generated corresponding to the absolute position of the rotary head with respect to the tape reference edge of the tape-shaped recording medium. an information signal recording/reproducing device comprising: and recording of an information signal similar to a record trace of the information signal recorded on a tape-shaped recording medium running at a predetermined running speed in correspondence with the rotation locus of the rotary head; The tape standard in the tape-shaped recording medium is set such that the trace is recorded by the rotation locus of the rotary head on the tape-shaped recording medium that moves intermittently by a predetermined distance in the tape running direction and then stops. An information signal recording and reproducing device comprising means for controlling the rotation locus of a rotary head during intermittent recording operation based on a position signal of the rotary head generated corresponding to the absolute position of the rotary head with reference to the edge. provide.

[Effect]

The tape-shaped recording medium is placed at a position where the rotation locus of the rotary head can pass through the starting end of the recording formation area of the track on the tape-shaped recording medium by the rotating head to which the information signal to be recorded is supplied. to stop. A tape-shaped recording medium running at a predetermined running speed has a recording trace of an information signal similar to the recording trace of an information signal recorded and formed in correspondence with the rotation locus of a rotating head on a tape-shaped recording medium in a state where running is stopped. A position signal of the rotary head generated in correspondence with the absolute position of the rotary head with respect to the tape reference edge of the tape-shaped recording medium described above so that recording is formed at a predetermined recording position by the rotation locus of the rotary head. The amount of displacement of the rotating head is controlled based on.

【Example】

Hereinafter, specific details of the information signal recording/reproducing apparatus of the present invention will be explained in detail with reference to the accompanying drawings. FIG. 1 is a block diagram showing a schematic configuration of the information signal recording and reproducing apparatus of the present invention, FIG. 2 is a longitudinal cross-sectional side view of the rotating head section and the drum motor, and FIG. 3 is the bottom surface of the upper drum in the rotating head section. FIG. 4 is a block diagram of the head inclination correction control circuit, FIG. 5 is a waveform diagram for explaining operation, and FIGS. 6 and 7 are plan views showing track patterns. In the block diagram schematically showing the configuration of the information signal recording and reproducing apparatus of the present invention shown in FIG. 1, 1 is a mode input circuit. is a mode circuit of an operation section that provides information on the operation mode set by the operation of an input switch or an input push button to the system control circuit 2, and also when the information signal recording/reproducing device is an external storage device of the computer becomes the interface circuit with the computer. Reference numeral 3 denotes an information signal recording/reproducing circuit, and this information signal recording/reproducing circuit 3 records the information signal input to be recorded onto the tape-shaped recording medium T when the information signal recording/reproducing apparatus is in the recording operation mode. The recording signal is supplied to the rotary head as a recording signal in a signal format suitable for the following, and when the information signal recording/reproducing device is in the reproduction operation mode, the reproduction signal reproduced by the rotary head is subjected to predetermined signal processing and output as an information signal. Perform the action. The head inclination correction control circuit 4 records and forms information corresponding to the rotation locus of the rotary head on the tape-shaped recording medium T which is in a stopped state and which is running at a predetermined running speed. This circuit operates to control the amount of displacement of the rotary head so that an information signal track similar to the signal track is recorded and formed, and a specific configuration example of this head tilt correction control circuit 4 is shown in FIG. is exemplified. 5 is a capstan motor control circuit, 6 is a drum motor control circuit, 7 is a control pulse recording/reproducing circuit, and 9 is a full width erasing circuit. When performing an operation, the system control circuit 2 described above controls the system to perform an operation according to each operation mode. In Fig. 1, 8 is a control head, 1° is a full-width erasing head, 11 is a tension arm, 12, 13 is a tape guide, 14 is a drum motor, 15 is a rotating head section,
16 is a capstan motor, 17 is a cabstan, 1
8 is a pinch roller, 19 is a supply reel, and 2o is a take-up reel. A specific example of the structure of the above-mentioned rotating head section 15 and drum motor 14 is shown in the longitudinal cross-sectional side view of FIG. . In FIG. 2, 34 is a lower drum, and this lower drum 3
A guide band 38 for guiding the reference edge of the tape-shaped recording medium T is provided on a part of the outer periphery of the tape-shaped recording medium T. Said lower drum 3
The rotating ring 37, which is rotatably supported by bearings 35 and 36 provided at the upper drum 41, rotates the upper drum 41 without any play in the axial direction by the flanges 39 and 40 fixed thereto. It is made possible to do so. A rotor 42 of the drum motor 14 having a permanent magnet 43 having magnetic poles formed in a predetermined magnetization pattern is fixed to the flange 39 fixed to the rotating shaft 37 described above. 44 is a laminated core in the stator of the drum motor, and this laminated core 44 is provided with motor windings 45. 46 indicates a board for a frequency generator. The upper drum 41 fixed to the flange 40 has rotating head structures HAI and HA located 180 degrees symmetrically.
2 is provided. The above-mentioned rotating head structure HAI,
HA2 each includes at least one recording/reproducing element;
It is constituted by an actuator that drives and displaces the above-mentioned recording/reproducing element in a direction perpendicular to the direction in which the track extends. The actuators used in the configuration of each rotary head structure HAI, HA2 are configured so that the driving force for displacing the recording/reproducing element is electrostrictive force, electromagnetic force, electrostatic force, or any other force. However, in the description of the following embodiments, an actuator with a constituent layer in which the drive displacement of the recording/reproducing element is performed by a bimorph made of a piezoelectric material (electrostrictive material) is used. It is also said that the recording/reproducing element is a magnetic head. As shown in FIGS. 2 and 3, the rotary head assembly HAI (HA2) provided at 180-degree symmetrical positions on the upper drum 41 has a magnetic head Ml (used as a recording/reproducing element) at one end. The other end of the bimorph 47 to which H2) is fixed is inserted through the insulating plate 48 with screws 49, 4.
When a driving voltage is supplied to the bimorph 47 in each rotating head assembly HAI (HA2) described above, the magnetic heads H1, H2 are fixed to the upper drum 41. It is displaced by a direction and magnitude determined according to the polarity and magnitude of the driving voltage applied. Each magnetic head structure H is fixed to the above-mentioned upper drum 41 which is driven and rotated at high speed by a drum motor 14.
A1. The supply of recording signals to the magnetic head provided on the HA2 and the extraction of the reproduced signal reproduced by the magnetic head are performed by a rotary transformer 5o provided on the upper drum 41 and a rotary transformer 51 provided on the lower drum 34. It is designed to be carried out through Note that even in the case where a plurality of magnetic heads are provided in parallel in each of the magnetic head structures HAI and HA2 described above so that a plurality of tracks are configured simultaneously, a plurality of magnetic heads The supply of recording signals to the head and the extraction of reproduction signals reproduced by a plurality of magnetic heads are performed via the above-mentioned rotary transformer. In addition, the bimorph 4 provided in each magnetic head assembly HAI, HA2 fixed to the upper drum 41 described above.
The upper drum 41 is responsible for the supply of driving power to the components 7, the supply of operating power to the constituent members of the position detector, which will be described later, and the transmission of position detection signals generated by the position detector.
This is carried out using slip rings 53, 53, . At a position on the upper drum 41 opposite to the vicinity of the free end of the bimorph 47 in each of the magnetic head assemblies HAI and HA2 provided on the upper drum 41, there is a magnetic head attached to the tip of the bimorph 47 described above. Position detectors PII and PI2 are provided for detecting positions. The above-mentioned position detection @PII, PI2 is constructed according to an optical position detection principle, or constructed according to an electrostatic position detection principle, or constructed according to an electrodynamic position detection principle. It is possible to use a position detector constructed according to an electromagnetic position detection principle, a position detector constructed according to an acoustic position detection principle, or any other position detection principle. In the following embodiments, the above-mentioned position detector PII,
Photo interrupter PII as PI2. PX3 is said to be used. And the photo interrupter PI used as a position detector
The part of the bimorph 47 facing I and PI2 is configured as a light reflecting surface (photointerrupter PI
The light emitted from the light emitting element LED in I and PI2 is reflected by the reflecting surface of the bimorph 47, which is shown as a bimorph reflecting surface in FIG. 4, and is reflected by the light receiving element PD.
). The reason why the absolute positions of the magnetic heads H1 to H2 can be detected by the position detectors PII and PI2 provided on the upper drum 41 as described above is as follows. That is, since the upper drum 41 where the position detectors PII and PI2 are provided and the lower drum 34 are in a state where there is no play in the axial direction of the rotating shaft 37 as described above, the upper drum Position detectors PII and PI2 provided in 41
position and the absolute position of the magnetic head)
This is because the positional relationship with the surface of the guide band 38 provided on the lower drum 34 is always maintained constant. Now, when the information signal recording and reproducing apparatus of the present invention shown in FIG. 6 or 71!, tracks formed in correspondence with the rotation locus of the rotary head on the magnetic tape T running at a predetermined running speed are shown in FIG. 6 or 71! The state is as shown by the solid line in iI. 6 and 7 show track patterns formed on the magnetic tape T when the magnetic head moves in the same direction and the magnetic tape T moves in opposite directions. By the way, when the magnetic tape T stops running, the track pattern formed on the magnetic tape T by the rotation locus of the rotary head is as shown by dotted lines in FIGS. 6 and 7. When the magnetic tape T is running at a predetermined running speed, there is an inclination shift corresponding to one track pitch compared to the tracks recorded and formed on the magnetic tape T. As already mentioned, tracks recorded and formed on the magnetic tape T according to the rotation locus of the rotary head while the magnetic tape is stopped cannot be continuously reproduced while the magnetic tape is running. In this information signal recording/reproducing device, a recording trace of an information signal similar to the recording trace of an information signal formed corresponding to the rotation locus of a rotary head is recorded on a tape-shaped recording medium running at a predetermined running speed. , corresponds to the absolute position of the rotary head with respect to the tape reference edge of the tape-shaped recording medium described above so that a recording is formed at a predetermined recording position on the tape-shaped recording medium in the normal state by the rotation locus of the rotary head. By controlling the rotation trajectory of the rotary head during the stop recording operation based on the position signal of the rotary head generated by the recording operation, the recorded content of a specific track on a recorded magnetic tape can be adjusted. The rewriting operation can be performed easily and accurately, and the time-lapse VT
Move the magnetic tape intermittently like R. Even when recording is performed in the frame-by-frame recording mode on a stopped magnetic tape, the recorded magnetic tape can be reproduced satisfactorily while running at a normal running speed. FIG. 4 shows the position of the rotating head generated in correspondence with the absolute position of the rotating head with reference to the tape reference edge of the magnetic tape T, with respect to a predetermined recording position on the magnetic tape T whose running is stopped. By controlling the rotation locus of the rotary head during the running stop recording operation based on the position signal, an information signal is recorded and formed on the magnetic tape T running at a predetermined running speed in correspondence with the rotation locus of the rotary head. 2 is a diagram showing a configuration example of a head tilt correction control circuit shown in block 4 in FIG. 1 for recording and forming a track of an information signal similar to the track of FIG.
In the figure, PI is a reflective photointerrupter used as a position detector, E is a power supply, R is a resistor, and LE
D is a light emitting element, PD is a light receiving element, 21 is a current-voltage conversion circuit, and 22 is an amplifier circuit. The signal output from photointerrupter PII (or PI2) is output from photointerrupter PII (or PI2).
) and the rotating head structure HAI (or HA2).
) is a signal corresponding to the distance to the bimorph 47 used as an actuator, that is, a signal corresponding to the displacement amount of the bimorph 47, but the signal corresponds to the position detector PII provided on the upper drum 41 as described above. (or PI2) position and a guide band 38 provided on the lower drum 34 that serves as a reference for the absolute position of the magnetic head.
Since the positional relationship with the surface of the magnetic head is always maintained constant, the signal output from the photointerrupter PII (or PIE) is transmitted to the guide provided on the lower drum 34, which is used as a reference for the absolute position of the magnetic head. This signal corresponds to the absolute position of the magnetic head in the rotary head assembly-HAI (or HA2) with reference to the plane of the band 38. The signal output from the photointerrupter PI is. It is supplied to the differentiating circuit 27 and also supplied to the subtracter 23 as a subtraction signal. The subtractor 23 is supplied with a signal output from the movable contact V of the changeover switch 26 as the minuend signal. When the recording/reproducing apparatus is in a recording mode in which a recording operation is performed while the magnetic tape T is running, the aforementioned changeover switch 2'6 is turned on by a switching control signal supplied from the system control circuit 2. When the movable contact V is switched to the fixed contact C side and the recording/reproducing apparatus is in a recording mode in which recording is performed with the magnetic tape T stopped, the system control circuit 2 The movable contact V of the changeover switch 26 is switched to the fixed contact B side by the supplied switching control signal. A triangular wave generating circuit 24 is connected to the fixed contact S of the changeover switch 26.
A triangular wave voltage generated by the reference position voltage generating circuit 2 is supplied to the fixed contact C of the changeover switch 26.
The reference position voltage generated at 5 is supplied. The triangular wave voltage to be generated by the triangular wave generating circuit 24 described above is the triangular wave voltage that is generated by the rotating head assembly HAI (HA2).
), if a rotating head forms tracks on the magnetic tape T in a state where running is stopped, the tracks formed on the magnetic tape T will be in a predetermined running state. The voltage should be set to have a waveform similar to that of a track recorded on the magnetic tape T running at a high speed corresponding to the rotation locus of the rotary head, and should also be generated by the reference position voltage generation circuit 25 described above. The reference position voltage is the voltage on the magnetic tape T when a track is formed by the rotating head on one magnetic tape T in a running state with the reference position voltage being supplied to the bimorph 47 in the rotating head assembly HAI (HA2). The voltage is set so that the tracks to be formed can be recorded in the same way as the tracks formed on the magnetic tape T running at a predetermined running speed in correspondence with the rotation locus of the rotary head. Both of the two types of voltages set as described above are applied to the rotary head structure HAI (or This is the reference absolute position signal of the magnetic head in HA2). Therefore, the signal output from the subtracter 23 described above indicates the direction and amount of deviation of the actual absolute position of the rotary head output from the photointerrupter PII (or PI2) from the reference absolute position of the rotary head. This corresponds to the error signal shown. The signal output from the subtracter 23 is subjected to phase compensation in a phase compensation circuit 29 and gain adjustment in a gain adjustment circuit 30, and then supplied to a bimorph drive circuit 32 via a subtracter 31. The circuit arrangement consisting of the differentiating circuit 27 and the adjusting circuit 28 which supply the subtraction signal to the subtracter 31 described above is a speed signal obtained by differentiating the position signal of the rotary head output from the photointerrupter PII (PN2). This circuit is provided as necessary to eliminate or reduce variations in the characteristics of the mechanical vibration system of the bimorph 47 using a signal whose gain is adjusted by the gain adjustment circuit 28. The signal outputted from the subtracter 31 and supplied to the bimorph drive circuit 32 is used as a signal in a state suitable for driving and displacing the bimorph 47.
2 to the bimorph 47. When the operation mode for the mode input circuit 1 in the information signal recording and reproducing apparatus of the present invention is set as a recording operation mode or a reproducing operation mode with the magnetic tape T running at a normal tape running speed, 4, the movable contact V of the changeover switch 26 in FIG. An operation is performed in which the position of the rotary head is set as a reference, but in the information signal recording/reproducing apparatus of the present invention shown in FIG. Since the recording/reproducing operation performed in this state is similar to that of a helical scan type VTR, a detailed explanation of the operation will be omitted. Next, in the information signal recording and reproducing apparatus of the present invention, there is a recording operation mode in which the recorded content of a specific track on the already recorded magnetic tape is rewritten while the magnetic tape T is stopped, or the magnetic tape is A recording operation mode in which recording is performed in a frame-by-frame recording manner on a stopped magnetic tape by intermittently moving the magnetic tape, etc.
When the operation mode for the mode input circuit 1 in the information signal recording and reproducing apparatus of the present invention is set as a recording operation mode or a reproducing operation mode in a state where the magnetic tape T is stopped running, the system control circuit 2, the movable contact V of the changeover switch 26 in FIG. The action as set is performed. FIG. 5 shows an example of a recording operation performed by the information signal recording/reproducing apparatus of the present invention when the magnetic tape T is stopped running, and shows a case where the magnetic tape is intermittently driven to record two tracks as an assembly. This is a time chart, and (a) in Fig. 5 is a pulse in which one cycle corresponds to one rotation of the drum and the duty cycle is 50%, and during the high level period of this pulse, the rotating head section The period during which tracks are recorded and formed on the magnetic tape T by the magnetic head (magnetic head of Channelt...CHI) provided in one of the two rotating head structures HAI and HA2 provided in the two rotating head structures HAI and HA2. Also, during the low level period of the pulse, the two rotary head structures HA provided in the rotary head section 15 correspond to
This period corresponds to the period in which tracks are recorded on the magnetic tape T by the magnetic head (the magnetic head of CHI) provided on the other rotary head assembly HA2 in I and HA2. FIG. 5(b) shows the timing of starting the capstan motor 16. Note that the position of the rotary head at the time when the capstan motor 16 is started is the position of the last track among the previously recorded tracks. The capstan 17 driven and rotated by the capstan motor 16 described above is provided with a rotary encoder RE, and after the capstan motor 16 is started, the number of pulses generated by the rotary encoder RE is determined by a predetermined number. When the number reaches , the supply of drive power to the capstan motor 16 is stopped ((b) in FIG. 5 changes from a high level state to a low level state). The rotary encoder RE described above is capable of detecting the rotation direction, rotation angle (phase), rotation speed, etc. both when rotating and when stopped. At the time when the supply of drive power to the capstan motor 16 is stopped (at the time when (b) in FIG. 5 changes from a high level state to a low level state). Braking 4 for the capstan motor 16 is started ((c) in FIG. 5 indicates the high level state is the braking period).
The operation can be performed by supplying a current to the capstan motor 16 in the opposite direction to the current supplied to the capstan motor 16 during the drive rotation described above. The rotational speed of the capstan motor 16 is rapidly reduced by the four braking operations described above. Then, when the number of pulses generated by the rotary encoder RE reaches a predetermined number, the four braking operations for the capstan motor 16 are stopped, and the final stop position of the magnetic tape is determined. (d) in FIG. 5 is a period during which the magnetic tape T is positioned by the capstan motor 16. During this period, the rotational speed of the capstan motor 16 becomes sufficiently slow, and the number of pulses generated by the rotary encoder RE increases. When it reaches a predetermined value corresponding to the position where it should stop,
The capstan motor 16 is forcibly stopped by performing an operation such that the output voltage of the rotary encoder becomes a predetermined σ voltage value. This method utilizes the fact that the output of the rotary encoder exhibits a predetermined number of sinusoidal voltage changes during one rotation. FIG. 5(e) shows the capstan motor 16 as described above.
FIG. 5(f) shows changes in the moving speed of the magnetic tape T caused by the driving of the magnetic tape T, and (f) in FIG.
FIG. 5(g) shows the state of displacement of the bimorph provided in I, and FIG. 5(g) shows two rotating head structures HAI,
It shows the state of displacement of the bimorph provided in the other rotary head assembly HA2 in HA2. (f) in Figure 5. (g) corresponds to the case where the relationship between the moving direction of the magnetic tape T and the moving direction of the rotary head is as illustrated in FIG. FIG. 5(h) shows two rotating head structures HAI. It shows the gate passing period of the recording signal supplied to the magnetic head H1 that is displaced by the bimorph 47 provided in one of the rotary head structures HAI in HA2,
Furthermore, (i) in FIG. 5 shows two rotating head structures HAI.
, HA2 shows the gate passage period of the recording signal supplied to the magnetic head H2 being displaced by the bimorph 47 provided in the other rotary head assembly HA2. The bimorph 47 provided in each of the rotating head structures HAI and HA2 described above is driven by a triangular wave voltage as described above, but transient vibrations occur in the bimorph at the portion where the driving direction changes. For ease of use, the fifth
As illustrated in (f) to (i) of the figure, the recording operation by the rotary head is performed in such a manner that the part where transient vibrations are likely to occur in the bimorph is excluded from the track tracking part of the rotary head. It is desirable to do so. Then, at the timing illustrated in FIG. 5, intermittent driving and stopping operations are performed for each predetermined distance on the magnetic tape T, and recording operations of recording signals by the rotary head are performed, so that the traveling is stopped. Rotation generated in correspondence with the absolute position of the rotary head with respect to the tape reference edge of the magnetic tape T as a reference with respect to a predetermined recording position where successive tracks are to be recorded and formed on the magnetic tape T in a state where With the rotation locus of the rotary head during the traveling and flying recording operation being controlled based on the head position signal, recording is formed on the magnetic tape T running at a predetermined running speed in correspondence with the rotation locus of the rotary head. Tracks of information signals similar to those of the information signals are sequentially recorded. The explanation so far has been about the case where the magnetic tape is driven intermittently to perform assembly recording on two tracks. It goes without saying that the recording operation in insert mode is performed. Note that in implementing the information signal recording and reproducing apparatus of the present invention,
By setting the tape running speed to an integer fraction of the normal tape running speed and setting the recording interval to field skip at the same ratio as above, time-lapse recording can be realized without intermittent driving of the capstan motor. The recording operation in the normal continuous recording mode and the reproducing operation in the continuous playback mode in the information signal recording and reproducing apparatus of the present invention are similar to the recording operation in the continuous recording mode and the playback operation in the continuous playback mode in a normal VTR. It is. When new recording is to be performed on the magnetic tape, a control signal is applied from the system control circuit 2 to the full-width erase circuit 9 so that the full-width erase head 10 performs full-width erase on the magnetic tape T prior to recording. Further, the drum motor 14 of the rotary head section 15 is driven and rotated at a predetermined rotational speed and rotational phase under the control of the drum motor control circuit 6. When a cassette tape is unloaded, a control signal is given from the system control circuit 2 to the drum motor control circuit 6 in order to stop the rotation of the drum. Control pulses required for detecting the track position during reproduction are generated by the control head 8 under the control of the control pulse recording/reproducing circuit 7 during the recording operation. Capstan motor 16 during recording operation in normal continuous recording mode and playback operation in continuous playback mode.
is driven and rotated at a predetermined rotational speed and rotational phase under the control of the capstan motor control circuit 5, and in the stop recording mode as described above, the recording track position is determined by the rotating head, similar to a time-lapse VTR. When the capstan motor is stopped at a predetermined position and moved to the first track so that it can be tracked, the capstan motor is driven and braked based on the output signal of the rotary encoder, and the capstan motor is moved only to the predetermined track pitch. May you be willing to stop,
Although controlled by the capstan motor control circuit 5,
The timing of these control operations is determined by control signals from the system control circuit 2. In addition, when a plurality of magnetic heads are attached to the bimorph provided in the rotating head structure HAI (HA2), and a plurality of tracks are simultaneously recorded and formed on the magnetic tape in parallel. The predetermined track pitch described above is the total track pitch of the plurality of tracks recorded and formed simultaneously.

【Effect of the invention】

As is clear from the above detailed explanation, the information signal recording and reproducing apparatus of the present invention is capable of recording and forming tracks on a tape-shaped recording medium by means of a rotary head to which an information signal to be recorded is supplied. The tape-shaped recording medium is stopped at a position where the rotation trajectory of the rotary head can pass through at the starting end of the area, and the tape-shaped recording medium traveling at a predetermined running speed corresponds to the rotation trajectory of the rotary head. The above-mentioned tape-shaped recording medium is arranged so that a track of an information signal similar to the track of the information signal recorded and formed by the above-mentioned tape-shaped recording medium is recorded and formed at a predetermined recording position by the rotation locus of the rotary head at a predetermined recording position on the tape-shaped recording medium in a stopped state. The displacement amount of the rotary head is controlled based on the position signal of the rotary head generated corresponding to the absolute position of the rotary head with respect to the tape reference edge on the recording medium, and information signals are recorded by the rotary head. Therefore, in the information signal recording and reproducing apparatus of the present invention, the conventional VTR described above can be used.
As was done in the Aseran pre-recording/insert recording mode in the editing function. Since it is not necessary to repeatedly rewind and forward the tape-shaped recording medium every time recording is performed on the tape-shaped recording medium, there is no burden on the tape running system mechanism and the tape-shaped recording medium. It is possible to realize a highly stable and highly reliable information signal recording and reproducing device, since there is no need for overlapping, and it is easy to set the track position with high precision. In addition, in the information signal recording and reproducing apparatus of the present invention, a track pattern is recorded and formed by a rotating head on a tape-shaped recording medium that is running at a predetermined running speed, with respect to a tape-shaped recording medium that is in a stopped state. Since tracks with similar track patterns are recorded and formed, the tape-shaped recording medium on which information signals have been recorded in assembly recording/insert recording mode by the apparatus of the present invention is run at a predetermined running speed. Even during playback, the tracks can be accurately tracked by the rotating head. Therefore, the device of the present invention can record information signals in the normal continuous recording mode, and
Since recording of information signals in the Assurance Recording and Insert Recording modes can be mixed on the same tape-shaped recording medium, for example, if used as an external storage device for a digital VTR or computer, it can be used as a wide range of devices. This means that a device with improved functionality can be provided. Furthermore, since the information signal recording and reproducing apparatus of the present invention does not require pre-rolling, it is possible to realize stop recording at short time intervals, and furthermore, by using a time axis compensation circuit during reproduction, a high-performance time-lapse VTR can be constructed. Furthermore, time-lapse recording is realized without intermittent driving of the capstan motor by setting the tape running speed to an integer fraction of the normal tape running speed and setting the recording interval to field skip at the same ratio as above. be able to.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing a schematic configuration of the information signal recording and reproducing apparatus of the present invention, FIG. 2 is a longitudinal cross-sectional side view of the rotating head section and the drum motor, and FIG. 3 is the bottom surface of the upper drum in the rotating head section. Figure 4 is a block diagram of the head tilt correction control circuit, Figure 5 is a waveform diagram for explaining operation,
FIGS. 6 and 7 are plan views showing track patterns. 1...Mode input circuit, 2...System control circuit. 3... Information signal recording/reproducing circuit, 4... Head tilt correction control circuit, 5... Capstan motor control W! II
I, 6... Drum motor control circuit, 7... Control pulse recording/reproducing circuit, 8... Control head, 9... Full width erasing circuit, 10... Full width erasing head.
11...Tensile strength arm, 12.13...Tape guide, 14...Drum motor, 15...Rotating head section, 16...Capstan motor, 17...Cab stern, 18... - Pinch roller, 19... Supply reel, 20... Take-up reel, 23... Subtractor,
24... Triangle wave generation circuit, 25°°° reference position voltage generation circuit, 26... Changeover switch, 34... Lower drum, 35, 36... Bearing. 37... Rotating shaft, 38... Guide band, 39.40.
...Flange, 41... Upper drum, 43... Permanent magnet, 42... Rotor of drum motor 14, 44...
Laminated core in stator of drum motor, 45...Motor winding, 46...Substrate for frequency generator, 47...
・Bimorph, 48...Insulating plate, 49...Screw, 5
0,51... Rotating transformer, 52... Rotating shaft, 53
...Slip ring. HAI, HA2...Magnetic head structure, PIl, PI2
...Position detector, LED...Light emitting element, PD...
Light receiving element. Hl, H2...Magnetic head, "9.'

Claims (1)

[Claims] 1. A record trace of an information signal similar to a record trace of an information signal recorded and formed on a tape-shaped recording medium running at a predetermined running speed in correspondence with the rotation locus of a rotating head, Corresponding to the absolute position of the rotary head with respect to the tape reference edge of the tape-shaped recording medium described above, so that a recording is formed at a predetermined recording position on the tape-shaped recording medium in a stopped state by the rotation locus of the rotary head. An information signal recording/reproducing device 2 comprising a means for controlling the rotation locus of the rotary head during the traveling stop recording operation based on the generated position signal of the rotary head, and a tape-shaped recording device that runs at a predetermined traveling speed. A state in which a record trace of an information signal similar to the record trace of an information signal recorded and formed on the medium corresponding to the rotation trajectory of the rotary head moves intermittently by a predetermined distance in the tape running direction and then stops. A position signal of the rotary head generated corresponding to the absolute position of the rotary head with respect to the tape reference edge of the tape-shaped recording medium as a record is formed by the rotation locus of the rotary head with respect to the tape-shaped recording medium. An information signal recording/reproducing device comprising means for controlling the rotation locus of a rotary head during intermittent recording operation based on the above-mentioned information.