JPH08111046A - Signal recording method and device - Google Patents

Abstract

PURPOSE: To eliminate the need for preparing taps of many kinds of lengths by making the production of the endless reproducing tapes of arbitrary time shorter than the length of ths tapes possible. CONSTITUTION: In an auto-reverse recorder for executing recording by allowing the tape to traveling forward and backward direction, the total recording time Tt determined to meet the musical sources, etc., to be recorded with is divided into the recording time Tfwd in the forward direction and recording time Trev in the reverse direction. The time Tfwd is set slightly longer than the time Trev . Recording is started in the forward direction from the beginning end of the tape 16. Inversion instruction information is written and is forcibly inverted at the point of the time the recording is executed by the time Tfwd . The recording is executed in the reverse direction from the position.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a signal recording method and apparatus for a small portable digital tape recorder or the like, and more particularly to a signal recording method and apparatus for producing a medium capable of endless reproduction by so-called auto-reverse operation. .

[0002]

In the case of a signal recording / reproducing apparatus, for example, a tape recorder having a so-called auto-reverse function,
The reproduction direction is reversed at the tape end of the forward direction or the forward (FWD) direction, which is the direction of, and the reproduction is performed in the backward direction or the reverse (REV) direction, which is the second direction.

As a method of controlling the reversal of the reproducing direction in the automatic reverse reproduction, a method of detecting that the tape is completely wound up and the rotation of the reel is stopped, a method of detecting a so-called leader tape near the tape end, and the like. Is known, and a quick inversion operation is performed in response to these detections. Further, as an application of this, when the tape end is reached in the reverse (REV) direction reproduction state, the tape end is detected by a similar detection method and the automatic reversal operation is performed to reproduce the forward (FWD) direction. It is known that such a function that causes the tape to be performed is combined, and automatic reversal from the forward direction to the backward direction and automatic reversal from the backward direction to the forward direction are combined so that one tape is repeatedly played back and forth. A tape recorder having an endless reproduction function is also known.

[0004]

However, in each of these conventional systems, since the reversing operation is performed near the tape end, one repeat time for performing the above endless reproduction depends on the tape used. It is decided by the length. Therefore, when a music source shorter than the length of the tape is recorded, the remaining time is unnecessarily reproduced.

For example, when recording a 50-minute music source on a 60-minute tape, 30 minutes are recorded on the outward so-called A side.
In general, 20 minutes of recording is performed on the so-called B side in the return path. When this tape is reproduced endlessly, a silent state of 10 minutes is reproduced for each repetition.
It is possible to record an appropriate 10-minute portion of the same music source in this 10-minute silent portion, or to record another music source for 10 minutes only. It is different from endless playback of a set of music sources.

Therefore, it is necessary to prepare a tape having a length suitable for the time such as a music source for which endless reproduction is to be performed. This means that the supply side or manufacturer side will have to prepare many types of tapes, which will increase the number of product types.
This causes a cost increase in terms of mass productivity and inventory control. In addition, it may be time-consuming for the user to find a tape with a length that matches the time such as the music source, and there may not be all types of tapes at the store. It is wasteful and uneconomical. Furthermore, in reality, there is a limit to the number of types of tape length, so even if you select a tape with the length closest to the time of the target music source etc., an error of about several minutes may occur, Endless playback is difficult.

The necessity of the tape having a length suitable for the time of the music source as described above is not limited to the case of endless reproduction, and even in the case of normal auto-reverse reproduction, the time when the music source is completely listened to. This is because it is more convenient for the tape management and the next use to reach the beginning position of the tape. Therefore, in view of the above situation, the present invention provides a signal recording method capable of performing automatic reverse or endless reproduction at an arbitrary length without preparing a recording medium such as tapes having various lengths or recording capacities. The purpose is to provide a device.

[0008]

According to a signal recording method of the present invention, a recording medium is moved from a first direction relative to a recording head in a second direction which is opposite to the first direction. In a signal recording method of reversing the traveling direction and recording a signal on the recording medium, a total recording time Tt as a sum of the recording time T _{1 in the first} direction and the recording time T _{2 in} the _second direction.
And a reversal for reversing the traveling direction at the time of reproduction in the vicinity of the time Tt / 2 which is 1/2 the total recording time from the start of recording in the first direction. The problem described above is solved by including a step of recording instruction information and a step of recording the reversal instruction information and then reversing the medium traveling direction to continue recording in the second direction.

Further, in the signal recording apparatus according to the present invention, the recording medium is reversed relative to the recording head in the medium traveling direction from the first direction to the second direction opposite to the first direction. In the signal recording device for recording a signal on the recording medium, the total recording time Tt is set as the sum of the recording time T _{1 in the first} direction and the recording time T _{2 in} the _second direction,
1 / of the total recording time from the start of recording in the first direction
At a time point near the passage of time Tt / 2 of 2, reversal instruction information for reversing the traveling direction at the time of reproduction is recorded, and after recording the reversal instruction information, the medium traveling direction is reversed and the second direction is set.
The above-mentioned problems can be solved by having a control means for performing control to continue recording in the direction.

Here, it is preferable to set the recording time in the first direction longer than the recording time in the second direction. In this case, it is preferable to record high-speed search instruction information at the end position of the recording in the second direction so as to find the next recorded content. It is also possible to use a magnetic tape as the recording medium and the signal to be recorded is a digital audio signal.

[0011]

By using a recording medium having a recording time longer than the length of a signal to be recorded, such as a music source, forcible reversal at a midway position of the recording medium allows the recording signal to be recorded at a recording time of approximately equal reciprocation. Recording is possible, and recording suitable for endless reproduction can be performed.

By setting the recording time in the first direction longer than the recording time in the second direction,
Even if the tape running speed varies, it is possible to prevent the remaining tape amount from being insufficient during the second direction recording, and it is possible to record all the music sources and the like without any defect. Further, by recording the high-speed search instruction information for locating the next recording content at the recording end position in the second direction, a blank portion remains after the recording in the second direction ends. However, it is possible to skip this at a high speed to find the next recorded content and shorten the blank reproduction time.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing a schematic configuration of a tape recorder as an embodiment of a signal recording apparatus to which a signal recording method according to the present invention is applied, and FIG. 2 is for explaining a principle of setting a reversal time at the time of recording. 3 and FIG. 3 are flowcharts for explaining the operation at the time of recording. In this embodiment, a small portable digital audio tape recorder using a magnetic head is assumed, but the present invention can be applied to various other signal recording methods and devices, and the recording signal is also audio. It goes without saying that not only signals but also video signals, computer data signals, etc. can be used.

First, in the apparatus shown in FIG. 1, a digital audio signal is supplied to the input terminal 11.
This input audio signal is sent to the memory 12 and subjected to write / read control, sent to the recording head 15 via the encoder 13 and the recording amplifier 14, and recorded on a tape-shaped recording medium such as a magnetic tape or the recording tape 16. To be done. The tape 16 is run and driven by a capstan 17 and a pinch roller 18, and the running direction is reversely controlled at a predetermined reverse position. The capstan 17 is rotationally controlled by a motor 19.

The system control circuit 21 for controlling the operation of each part of the recording apparatus is supplied with signals such as operation input, setting input, and control input via the input terminal 22, and the memory control circuit 23 and inverted information output. The control signal is sent to the circuit 24, the motor drive circuit 26, and a skip flag output circuit 28, which will be described later, provided as necessary. Further, the detection output from the end sensor 25 which detects the end of the magnetic tape is supplied to the system control circuit 21. In response to the control from the system control circuit 21, the memory control circuit 23 controls writing / reading of recording data to / from the memory 12 and performs an operation such as data accumulation for performing defect-free inversion as described later. Let The reversal information output circuit 24 sends reversal information for performing the automatic traveling direction reversal operation during reproduction to the encoder 13 to record the reversal information at a predetermined position on the tape 16. In addition, a skip flag output circuit 2 provided as needed
8 sends a skip flag, which will be described later, to the encoder 13 to record it at a predetermined position on the tape 16.

By the way, at the time of recording with normal auto-reverse, the system control circuit 21 is operated by the end sensor 25.
Upon reaching the vicinity of the tape end by the detection output from, the tape running direction is reversed, for example, from the forward (FWD) direction to the reverse reverse (REV) direction for recording. The total round-trip recording time in this case is the length of the tape itself.

On the other hand, in the embodiment of the present invention,
The total recording time Tt, which is the sum of the recording time T _{fwd in} the forward (FWD) direction and the recording time T _{rev in} the reverse (REV) direction, is set according to the music source to be recorded. Tt is reversed at the reverse position on the recordable tape. In this case the simplest is
It is conceivable that the recording times T _fwd and T _rev in each direction are set to Tt / 2, which is 1/2 of the total recording time Tt.
In consideration of variations in tape running speed, the forward recording time T _fwd is set longer than the reverse recording time T _rev . This is because if the tape consumption on the reverse side exceeds the tape consumption on the forward side due to variations in tape running speed, there will be insufficient tape on the reverse side.

That is, FIG. 2 shows the recording time T in each direction.
_fwd, T _rev settings, or reverse position from the tape start end is a diagram for explaining the basic principle of setting the inversion time, especially representative of the time elapsed from the tape beginning. In FIG. 2, the standard tape running speed of the magnetic tape 16 is Vs, the tape speed error on the + side is vp, and the tape speed error on the-side is vm. Here, the tape length L _fwd that is actually consumed when recording is performed on the recording area 16A when the magnetic tape 16 travels in the forward direction, and the tape that is used for recording the recording area 16B when traveling in the reverse direction. Since it is required that L _fwd ≧ L _rev is always established between the length L _rev and the length L _rev , in the worst error state,
That is, when the tape speed in the forward direction is the lowest and the tape speed in the reverse direction is the highest, the above condition L _fwd
It is sufficient if ≧ L _rev is satisfied. Therefore, as a condition between the recording times T _fwd and T _rev in each direction, it is necessary to satisfy T _fwd (Vs-vm) ≧ T _rev (Vs + vp) as shown in FIG. . Based on the inequalities thus obtained and the total recording time Tt being T _fwd + T _rev , T _fwd = (Vs-vp) / (2Vs-vm + vs) is derived. The reversal time may be set based on this equation.

This is because when a small portable digital audio tape recorder using a rotary head is used as the signal recording device, a structure in which a small pinch roller is provided in the tape cassette is adopted. The dimensional error of the diameter appears as an error of the tape running speed, and actually the error is about + 2% and -1%. In such a case, the setting of the inversion time is particularly important.

FIG. 3 is a flow chart for explaining such an automatic reversal recording operation. In FIG. 3, in the first step S1, the total recording time Tt is set according to the music source to be recorded. In the next step S2, after recording the front recording time T ₁ and the back recording time T ₂ of the tape, recording is started. These times T ₁ and T ₂ correspond to the recording times T _fwd and T _rev in the forward direction and the reverse direction, respectively,
Although it is calculated based on the above formula and the like, the recording may be started in the reverse direction.

In the next step S3, the recording operation in the above table or in the forward direction is performed.
In step 4, it is determined whether or not the front recording time T ₁ has elapsed. If the front recording time T ₁ has not elapsed, the process returns to step S3 to continue the front recording operation, and if the front recording time T ₁ has elapsed, the process proceeds to the next step S5 to reverse the tape running direction. Make the vehicle reverse.

After the running reversal operation is performed in step S5, the process proceeds to step S6 to perform the recording operation in the reverse or reverse direction. During this back recording operation, it is determined in step S7 whether or not the back recording time T ₂ has elapsed. If NO, the procedure returns to step S6 to continue the back recording operation, and if YES, the next step The process proceeds to S8 to end the recording operation.

By the way, in the case of performing the reproduction by automatically reversing the traveling direction, in consideration of the fact that the reproduction signal is interrupted for the time required for the reversing operation, in the present embodiment,
Defect-free inversion using memory is realized. This is because before the reversing operation, the reproduction data for a time longer than the time required for the reversing operation is stored in the memory, and during the reversing operation, the reproduction data stored in this memory is read to continuously output the reproduction signal. By doing so, the interruption of the reproduction signal at the time of the inversion operation is eliminated.

Specifically, as shown in FIG. 4, the tape 1
The tape speed is increased from the position x _W, which is a predetermined length before the reversal position x _{R of} 6, and only the difference between the data amount read from the tape 16 and the data amount required for the actual audio signal reproduction is stored in the memory. Inverted position x
At the time when _R is reached, the amount of reproduction data that is longer than the time required for reversal is stored in the memory. Therefore, at the time of recording, the accumulation start position x _W is calculated based on the reversal position x _R, and the reversal instruction information such as the reversal flag is written at this position x _W. Specifically, it is possible to write a down count value such that the numerical value decreases from the position x _W toward the reversal position x _R. In this case, the predetermined value in the reverse position x _R, for example, by previously writing the down count value such that 1 or 0, it is possible to know the distance or time to the reverse position x _R. The down count value or the inversion information such as the inversion flag is output to the inversion information output circuit 2 according to a command from the system control circuit 21 of FIG.
4 is created, sent to the encoder 13 and recorded at a predetermined position on the tape 16.

FIG. 4 shows an example of the reversal position x _R and the accumulation start position x _W in such defect-free reversal. That is, A of FIG. 4 shows an example of reversing at the tape end, the tape remaining amount is obtained by measuring the tape running amount at the time of recording, the time from this tape remaining amount to the planned reversal position x _R is calculated, and at the time of reproduction. It is sufficient to calculate the above-mentioned accumulation start position x _W required for the accumulation operation. In addition, B and C in FIG.
Shows an example in which the planned inversion position x _R is calculated in advance according to the recording time of the music source or the like as described above. The accumulation start position x _W is obtained based on this position x _R , and this position x x is calculated. _The inversion instruction information may be recorded from _W. The inversion planned position x _{R in} this case is, as described above,
Front recording time T ₁ or forward recording time T
It is preferable that _fwd is set so as to satisfy the condition that it is longer than the backward recording time T ₂ or the reverse recording time T _rev .

By the way, when the reversal time is set so that the front recording time T ₁ or the forward recording time T _fwd is longer than the backward recording time T ₂ or the reverse recording time T _rev , At the time of actual recording, as shown in FIG. 2, a portion of the recording area 16B at the time of recording in the reverse direction after recording is completed, that is, on the tape start end side,
An unrecorded blank portion BL often occurs. If the blank portion BL is generated for a long time and reaches, for example, about several minutes, the endless reproduction cannot be performed well.

Therefore, in the present embodiment, as shown in FIG. 5, at the recording end position x _F in the reverse direction, high speed search instruction information of the next recorded content, for example, as a cue search start flag of the next music is set. The skip flag is recorded. This skip flag is created by the skip flag output circuit 28 according to a command from the system control circuit 21 of FIG. 1 and sent to the encoder 13. When this skip flag is detected during reproduction, the high-speed running operation for searching the beginning of the next song is switched, but this high-speed searching operation is reversed and continued even when the end of the tape is reached.

That is, for example, as shown in FIG. 6, even when the recording start position x _S in the forward direction is separated from the start end of the tape, the recording end position x _{F in the} reverse direction is generated.
When the skip flag is detected at, the tape is fed in the reverse direction at high speed to search for the beginning of the next song, and when the tape reaches the beginning, the running direction is reversed and this time the tape is forwarded in the forward direction. Then, a cue search for the next song is performed.

FIG. 7 shows an example of a signal reproducing apparatus for performing such reproducing operation. In FIG. 7, the signal recorded on the tape 16 is reproduced by the reproduction head 31 and sent to the reproduction processing circuit or the demodulation circuit 33 via the reproduction amplifier 32, and the reproduction signal from the reproduction processing circuit 33 is stored in the memory 34. It is taken out from the terminal 35 via. Writing / reading of the memory 34 is controlled by a memory control circuit 37. In the reproduction processing circuit 33, the skip flag detection circuit 38 detects the skip flag, and the inversion information detection circuit 39 detects the inversion information. These skip flag detection circuits 38,
The output from the inversion information detection circuit 39 is the system control circuit 2
Has been sent to 1.

The other constructions such as the tape running drive system shown in FIG. 7 are the same as those shown in FIG. The defect-free inversion operation will be described. When the reproduction in the forward direction progresses and the signal from the reproduction processing circuit 33 causes the inversion information detection circuit 39 to perform the accumulation start position x _W.
When the reversal information is detected, it is sent to the system control circuit 21. The system control circuit 21 controls the motor drive circuit 26 to increase the tape running speed and the memory control circuit 37 to control the reproduction data. Start accumulating or accumulating. When the reversal information detection circuit 39 detects that the tape 16 has traveled and reached the reversal position x _R , the system control circuit 21 controls the motor drive circuit 26 and the like to reverse the tape traveling direction. While the tape cannot be reproduced during this reversing operation, the data stored in the memory 34 is read out to prevent the reproduced audio signal from being lost and enable continuous audio reproduction. When the inversion operation is completed, the reproduction operation in the reverse direction is started.

Next, the endless reproduction using the skip flag will be described with reference to FIG. FIG.
In step S41, the reproducing operation, specifically, the reproducing operation in the reverse direction is being performed. At this time, in step S42, it is determined whether or not the skip flag is detected by the skip flag detecting circuit 38 in FIG. It While the reproduction operation is continued by returning to step S41 while it is not detected, if the skip flag is detected, the process proceeds to step S43 to perform the high-speed cueing operation, that is, the high-speed search operation for the head of the next song. Be seen. This high-speed search operation is performed in the reverse direction which is the reproduction direction. In the next step S44, it is determined whether or not the tape end portion, that is, the tape start end portion or the tape top in this specific example is reached, and if NO, that is, the tape top portion is not reached, the process proceeds to step S47 and the next song is played. It is determined whether or not the head of is detected. If NO in step S47, that is, if the head of the next song has not been reached, the process returns to step S43 to continue the high-speed cueing operation. For example, when the high speed search operation in the reverse direction proceeds and reaches the tape end portion or the tape top, YES is determined in the step S44, the process proceeds to a step S45, and the tape running direction reversing operation is performed. In this example, the reverse operation is performed from the reverse direction to the forward direction. In the next step S46, the high-speed cueing operation in the forward direction is performed, and the process proceeds to the next step S47, in which it is determined whether or not the head of the next music piece is detected. The beginning of the next song is detected and YES is obtained in step S47.
If it is determined that the normal reproduction operation, that is, the reproduction operation in the forward direction in this specific example, is performed in step S48. In this way, since the high-speed search operation is continuously performed with the inversion operation, the blank portion BL after the recording end in the reverse direction and the blank portion at the start end in the forward direction are skipped at high speed, The next song can be cued and good endless playback with a short interruption time is performed.

If NO is determined in the above step S47, the control is transferred from the high-speed cueing operation in step S43 to the routines after step S44, so that the beginning of the music such as an unrecorded tape is It is necessary to prevent the reciprocal search operation from continuing indefinitely when the above skip operation occurs on a tape that cannot be ejected. Therefore, it is preferable to protect the tape by counting the number of reversing operations during the high speed search operation and limiting the high speed search during the skip operation to one round trip, for example.

In the above example, the case where the skip flag is detected at the recording end in the reverse direction and the high speed search in the reverse direction is reversed at the tape top to shift to the high speed search in the forward direction has been described. It is also easy to write a skip flag at the end of recording in the forward direction and reverse the high speed search in the forward direction at the tape end to shift to the high speed search in the reverse direction.

According to the embodiment of the present invention described above, the tape running reversal position or reversal time which is about ½ of the total recording time is set in accordance with the time of the music source to be recorded. When a reversing operation is performed by recording reversal information such as a reversal flag or a down count value from a time or tape position that is a predetermined time earlier than that, and storing this data in the memory by detecting this reversal information during reproduction. Is compensated for by reading the data stored in the memory, and defect-free inversion is performed, and at the end of reproduction after reverse, the tape is returned to a position near the tape start end (tape top). As a result, the reverse reproduction is performed even at the beginning of the tape, so that the endless reproduction with less signalless portion can be performed.

In consideration of variations in tape running speed, the recording time in the forward direction is set longer than the recording time in the reverse direction in order to prevent the tape from running out during reverse, and the recording end portion of the reverse side is set. By writing the skip flag and skipping the blank part, you can record the music source to the end even if there is speed variation, and at the time of playback, skip the blank playback time to achieve good endless playback with short interruption time. You can do it.

The present invention is not limited to the above-described embodiments. For example, an optical tape or the like can be used as the tape-shaped recording medium in addition to the magnetic tape, and the recording / reproducing signal can be other than the audio signal. A video signal or a computer data signal can be used for. A rotary head or a fixed head can be used as the recording head or the reproducing head. Furthermore, the signal recording device and the reproducing device are not limited to the examples shown in the figure, and it goes without saying that various other configurations can be adopted.

[0037]

As is apparent from the above description, according to the signal recording method of the present invention, in the signal recording method of recording the signal by reversing the traveling direction of the recording medium,
Set the total recording time Tt as sum of the recording time T ₂ of the medium traveling direction of the recording time T ₁ and a second direction, the first
The reverse instruction information for reversing the traveling direction at the time of reproduction is recorded at a time point near the time Tt / 2, which is 1/2 of the total recording time, from the start of recording in the direction, and the reverse instruction information is recorded. Later, by reversing the medium running direction and continuing recording in the second direction, recording using a recording medium having a recording time longer than the length of a signal to be recorded, such as a music source, is recorded with substantially the same reciprocation. The recording signal can be recorded in time, and recording suitable for endless reproduction can be performed.

By setting the recording time in the first direction longer than the recording time in the second direction,
Even when the tape running speed varies, it is possible to prevent the remaining tape amount from running out in the second direction recording, and it is possible to record all the music sources and the like. Further, by recording the high-speed search instruction information for locating the next recorded content at the recording end position in the second direction, even if a blank portion remains after the recording in the second direction is completed. By skipping this at high speed, the next recorded content is cued and the blank reproduction time can be shortened.

Thus, a simple endless tape can be created by preparing recording media having a small number of types for recording signals such as music sources having various lengths. Therefore, it is not necessary to increase the number of types of recording media such as magnetic tapes, which is advantageous in terms of mass productivity and inventory control, and the trouble of finding a tape with a length that matches the time such as a music source is eliminated. Usability is also good. Further, the endless recording time can be finely adjusted, for example, in units of minutes, and good endless reproduction with a short interruption time can be performed even at an arbitrary recording time.

[Brief description of drawings]

FIG. 1 is a block circuit diagram showing a schematic configuration of a signal recording device to which an embodiment of a signal recording method according to the present invention is applied.

FIG. 2 is a diagram for explaining the principle of reversing time setting during recording.

FIG. 3 is a flowchart for explaining a recording operation accompanied by a traveling reversing operation.

FIG. 4 is a diagram showing an example of an inversion position and a data accumulation start position in the defect-free inversion.

FIG. 5 is a diagram for explaining a skip flag for endless reproduction.

FIG. 6 is a diagram for explaining a skip operation for endless reproduction.

FIG. 7 is a block circuit diagram showing a schematic configuration of an example of a signal reproducing device for performing automatic inversion and skip operations.

FIG. 8 is a flowchart illustrating a skip operation during reproduction.

[Explanation of symbols]

 12 memory 13 encoder 15 recording head 16 tape 17 capstan 18 pinch roller 19 motor 21 system control circuit 23 memory control circuit 24 inversion information output circuit 25 end sensor 26 motor drive circuit 28 skip flag output circuit 31 playback head 33 playback processing or demodulation Circuit 34 Memory 37 Memory Control Circuit 38 Skip Flag Detection Circuit 39 Inversion Information Detection Circuit

Claims (5)

[Claims] 1. A signal is recorded on the recording medium by reversing the medium running direction from a first direction of the recording medium relative to a recording head to a second direction opposite to the first direction. In the signal recording method, a total recording time setting step of setting a total recording time Tt as a sum of the recording time T _{1 in the first} direction and the recording time T _{2 in} the _second direction, and 1 / of the above total recording time from the start of recording
A step of recording reversal instruction information for reversing the traveling direction at the time of reproduction at a time point near the passage of time Tt / 2 of 2; and, after recording the reversal instruction information, reversing the medium traveling direction and reversing the second direction. And a step of continuing recording in the direction. 2. The signal recording method according to claim 1, wherein the recording time in the first direction is set longer than the recording time in the second direction. 3. The signal recording method according to claim 2, wherein high-speed search instruction information is recorded at the end position of the recording in the second direction so as to locate the next recorded content. 4. The signal recording method according to claim 1, 2 or 3, wherein the recording medium is a magnetic tape, and the signal to be recorded is a digital audio signal. 5. A signal is recorded on the recording medium by reversing the medium traveling direction from the first direction to the second direction, which is the direction opposite to the first direction, with respect to the recording medium relative to the recording head. a signal recording apparatus for, setting the total recording time Tt as sum of the recording time T ₂ of the said first direction of the recording time T ₁ and a second direction, the first
The reverse instruction information for reversing the traveling direction at the time of reproduction is recorded at a time point near the time Tt / 2, which is 1/2 of the total recording time, from the start of recording in the direction, and the reverse instruction information is recorded. A signal recording apparatus, characterized in that the signal recording apparatus further comprises control means for inverting the medium traveling direction and performing control for continuing recording in the second direction.