JPH08203156A - Reproducing device and recording device - Google Patents

Abstract

PURPOSE: To prevent malfunction in a reversing point of a tape and to quickly perform search operation by improving a head mean and a control means in a tape system used for reciprocating running. CONSTITUTION: A head means and a control means are provided as the following as reproducing and recording system adaptable to a recording system in which a tape shaped recording medium is halved by its center line. That is, a head means consisting of an upper side recording and reproducing head section 9, a lower side recording and reproducing head section 10 and the like can simultaneously read out data for a track of a forward track group and a backward track group. A control means consisting of a controller 11 and the like controls the head means as the following when search operation of some data unit is performed from a reproducing point in one side of forward track groups or backward track groups. That is, reciprocating reverse control can be performed as a search forward direction in search operation using data number information obtained from one side of track groups by the head means and data number information obtained from the other track group.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reproducing apparatus and a recording apparatus suitable for application in a recording system for recording audio data using a magnetic tape, for example.

[0002]

2. Description of the Related Art In a data recording system using a magnetic tape as a recording medium, there is a so-called non-tracking system. In this case, as shown in FIG. 16, tracks TK are formed diagonally on the magnetic tape T by the helical scan method of the head, but at the time of reproduction, as shown by Pa and Pb, a higher density scan than at the time of recording is performed. By making it possible to read all the data on the track TK without accurately tracing the track, and further rearranging the read data using the addresses recorded with the data, This is so that an accurate reproduction data stream can be reconstructed.

In the case of the non-tracking system, a system in which a magnetic tape is used reciprocally is used, and when the cassette is mounted with the surface of the magnetic tape facing upward, recording and reproduction in one direction of the upper stage of the magnetic tape can be performed. When the cassette with the magnetic tape is mounted with the back side facing up, recording and reproduction in the other direction of the lower stage of the magnetic tape can be performed. The tape pattern shown in FIG. 16 is one-way recording, Only the playback pattern is shown.

[0004]

By the way, in a tape system for reciprocal use, a so-called auto-reverse system is used, after recording and reproducing in one direction (normal direction) of the upper stage of the magnetic tape, and then in the mounting direction of the tape cassette. It is conceivable that the magnetic tape can be run in the opposite direction (reverse direction) without being changed, so that recording and reproduction in the other direction below the magnetic tape can be performed.

When the auto-reverse system is adopted in the conventional tape system using a compact cassette tape or the like, the tape running is reversed when it is detected that the tape running reaches the tape end. However, in the case of such auto-reverse, due to the time required for the mechanical reversing operation, the leader tape, etc., the output of the reproduced sound is interrupted during the reversal, and some of the recorded sound is lost. It was

Therefore, in the case of a non-tracking type recording / reproducing apparatus for recording digital audio data, the tape running is reversed at a certain time (for example, the time when the tape running approaches the tape end to some extent), and the machine is driven. By storing the reproduced data and the recorded data in the memory for a time longer than the time required for the dynamic inversion operation, the recorded data is not lost in the inversion area and the reproduced voice is not interrupted at the time of inversion. . As a result, the user can use the so-called double-sided upper and lower reciprocating tapes as if they were tapes having a length that doubles the recording time when used in one direction.
In the non-tracking method, not only the audio data but also the control data (CTL) is recorded on the track, but at the time of recording, it is inverted as the control data in the area where the tape running is inverted so that the inverted portion can be recognized at the time of reproduction. I am trying to record the mark.

Considering the search operation, inconvenience may occur with respect to the inversion operation. When searching for the beginning of a piece of music, the track is reproduced and scanned while the tape is running at high speed, and the target portion is searched for while looking at the reproduced control data. However, since the tracing is performed in a state of being relatively inclined with respect to the helical scan track, all the data in each track cannot be read, that is, not all the control data can be reproduced. Therefore, you may miss the reversal mark during the search.In this case, the proper reversing operation is not performed and the tape is run to the end of the tape. However, there is a problem in that the operation may be terminated by recognizing that.

Further, in the system using the tape-shaped recording medium, there is a disadvantage that the quick search operation of the music is disadvantageous in structure as compared with the system using the so-called disk-shaped recording medium. There is a demand for a technique that not only solves the problem at a location but also fundamentally speeds up the search operation (such as the beginning of a song).

[0009]

SUMMARY OF THE INVENTION The present invention has been made in view of these problems, and it is an object of the present invention to prevent a malfunction at a reversing point in a reciprocal use system of a tape and to speed up a search operation. .

Therefore, with respect to the tape-shaped recording medium, in each of the areas divided by the center line thereof, a forward track group corresponding to one tape running direction and a backward track group corresponding to another tape running direction. A head unit and a control unit are configured as follows as a reproducing device corresponding to a recording system in which a group is formed and data number information updated for each data unit is recorded on each track.
The head means enables data reading to be simultaneously performed on the tracks of the forward track group and the tracks of the backward track group. The control means, when a search operation of a certain data unit is performed from the reproduction point in one of the track groups on the forward path or the return path, the data number information obtained from the tracks of the one track group by the head means, and the other Using the data number information obtained from the tracks of the track group No., it is possible to perform the reversal control of the reciprocating path as the search advancing direction during the search operation.

Further, with respect to the tape-shaped recording medium, in each of the areas divided by the center line thereof, a forward track group corresponding to one tape running direction and a backward track group corresponding to another tape running direction. And the data number information that is updated for each data unit is recorded in each track, and the reversal point information and / or the reversal point are recorded in the reciprocating path advancing reversal point and the track in the vicinity thereof. A head unit and a control unit are configured as follows as a reproducing device corresponding to a recording system in which time information until reaching is recorded. The head means enables data reading to be simultaneously performed on the tracks of the forward track group and the tracks of the backward track group. The control means, when a search operation of a certain data unit is performed from the reproduction point in one of the track groups on the forward path or the return path, the data number information obtained from the tracks of the one track group by the head means, and the other Data number information obtained from the tracks of the track group, reversal point information, and time information up to the reversal point are used in whole or in part to make a round trip as a search speed and a search advancing direction during a search operation. To be able to perform road reversal control.

Further, in a recording device which records the data number information used for the operation in the reproducing device as one control information together with the voice and the like, the recording means and the data number for the data number information are as follows. A setting means is provided. The storage means can store the value relating to the data number information used at the end of the recording operation. Further, the data number setting means uses the value stored in the storage means as the value of the first data number information used at the start of the recording operation, and the value next to the value used at the end of the previous recording operation. Set to.

[0013]

Since the data of the forward track group and the data of the backward track group can be read at the same time, the shortest operation to the search target location is determined from the data number information obtained from the other track group during the search. be able to. Further, from the data number information of the track group currently being searched and the data number information of the other track group that can be read at the same time, it is possible to determine that the reversal position is approached, that it is not the reversal position but may be reversed.

Further, if it is detected from the data number information or the time information to reach the reversal point that the reversal point is approached, the reversal point information can be read through if the search speed is controlled so as to decrease. It can be prevented.

Further, when the data number information is used for the search operation as described above, the presence of a data unit having the same data number information on one tape is not preferable because it causes a malfunction. Therefore, at the start of recording, the data number information of a value following the data number information at the end of the previous recording is set so that a data unit having the same data number information does not occur on one tape. .

[0016]

EXAMPLE A recording / reproducing apparatus according to an example of the present invention will be described below. This recording / reproducing apparatus uses a magnetic tape as a recording medium and is an apparatus for recording / reproducing music data or the like on a helical scan track by a non-tracking method. A schematic configuration of the recording / reproducing apparatus is shown in FIG.

In FIG. 1, 1 is a data input terminal to which a digital audio signal D _in to be recorded is supplied, and 2 is a data output terminal from which a reproduced digital audio signal D _out is output. For example, a signal from a microphone or the like is A / D converted and supplied to the data input terminal 1. The output of the data output terminal 2 is D / A converted and then supplied to parts such as an amplifier and a speaker to be output as voice.

Reference numeral 3 is a data processing circuit for performing encoding and decoding processing on recorded data and reproduced data. The data processing circuit 3 is connected to a data processing memory 4, and performs a process of converting externally supplied data into recording data and a process of converting reproduced data into output data. Further, a process of dividing the data supplied from the outside into predetermined blocks and adding the block number data and the error correction code to each block is performed. The data processing circuit 3 is performed under the control of the controller 11 formed by a microcomputer.

As the recording data, not only audio data but also various control codes (CTL), overwrite protect code (OWP), CRC error correction code, etc. are added. These are controlled by the controller 11. From the generating unit 12 to the data processing unit 3
And is added as recording data in a predetermined format at the time of encoding processing. There is information called a music number as one of the control codes, which will be described later, but the data processing circuit 3 detects the level of the input signal in order to update the music number at the time of recording.
It is configured so that the detection information can be transmitted to the controller 11.

The recording data processed for recording by the data processing circuit 3 is subjected to recording modulation processing by the modulation circuit 5 to be a recording signal, and this recording signal is supplied to the RF amplifier 7. The RF amplifier 7 is connected via a rotary transformer 8 to an upper recording / reproducing head portion 9 formed in an upper portion and a lower recording / reproducing head portion 10 formed in a lower portion on the rotary head drum. Although detailed description is omitted, the RF amplifier 7 is
Magnetic heads A1 and B1 in the upper recording / reproducing head unit 9 and magnetic heads A2 and B2 in the lower recording / reproducing head unit 10.
Four systems are formed as the parts connected to. The magnetic heads A1, A2, B1 and B2 are all recording / reproducing heads. For example, when recording is performed by the upper recording / reproducing head unit 9, the recording data is alternately supplied to the magnetic heads A1 and B1 via the RF amplifier and the rotary transformer 8 for each recording data for one track. , Will be recorded on the magnetic tape.

The magnetic head A of the upper recording / reproducing head unit 9
The reproduction signals of 1 and B1 and the reproduction signals of the magnetic heads A2 and B2 of the lower recording / reproducing head unit 10 are respectively supplied to the RF amplifier 7 via the rotary transformer 8 and amplified by the RF amplifier 7. The reproduced signal RF signal thus generated is detected by the detection circuit 6, and the reproduced data and its clock component are detected and supplied to the data processing circuit 3.

Then, the data processing circuit 3 performs a synthesizing process for restoring the reproduced data into data for each track by using the data memory 14, and detects an error by using the error correction code added to the reproduced data. And error correction processing. Then, when the data of each track becomes complete data by these processes, digital audio data is output from the data output terminal 2. Further, the controller 11 carries out a required control operation according to the CTL code or the OWP code included in the reproduced data.

A drum motor drive circuit 13 drives the rotary head drum motor 14 to rotate at a predetermined speed under the control of the controller 11. In this case, the rotation state of the rotary head drum is detected by the frequency generator (FG) 15. Further, the control motor 17 for controlling the running state of the magnetic tape mounted in the recording / reproducing apparatus is driven by the control of the control motor drive circuit 16 based on the command from the controller 11. In this case, the current traveling state is detected by the sensor 18.

The controller 11 is a ROM 22,
A RAM 23 and a non-volatile RAM 24 are provided, and R
The OM 22 stores basic operation programs and processing coefficients. The RAM 23 is also used as a work memory during operation and temporary storage of required coefficients and the like. Non-volatile RAM
The data stored in the data 24 is required not to be lost even when the power is turned off. In particular, in this embodiment, the non-volatile RAM 24 is used for holding the music piece number described later.

The arrangement of the magnetic heads of the rotary head drum of this example is shown in FIGS. 2 (a) and 2 (b). 2A shows the arrangement of the magnetic heads in the plane direction on the rotary head drum 21, and FIG. 2B shows the rotary head drum 21.
3 shows the arrangement state of the magnetic heads in the vertical direction in FIG. As shown in FIG. 2A, a magnetic head A1 and a magnetic head B1 are arranged on the rotary head drum 21 close to a predetermined position. In this case, the azimuth angles of the magnetic heads A1 and B1 are changed to one and the other, and
The mounting heights of the magnetic heads A1 and B1 are changed by the amount of tracks. The magnetic head A1 and the magnetic head B1 serve as the upper recording / reproducing head section 9, and the external appearance is one double azimuth head for recording and reproducing.

When viewed in the plane direction in FIG. 2 (a),
The magnetic heads A2 and B2 are arranged close to each other at a position separated by 180 ° in rotation angle from the magnetic heads A1 and B1. This 2
Regarding the individual magnetic heads A2 and B2, the azimuth angle is changed to one and the other, and the mounting height is changed by one track. The magnetic head A2 and the magnetic head B2 serve as the lower recording / reproducing head unit 10 and, in appearance, form a single double azimuth head for both recording and reproducing. The magnetic heads A1 and B1 and the magnetic heads A2 and B2 are shown in FIG.
As can be seen from (b), the height positions are shifted in the vertical direction, and as will be described later with reference to FIG.
1, B1 are upper track groups (normal tracks) T
_The magnetic heads A2 and B2 correspond to the lower track group (reverse track) _TL .

Scanning at the time of recording / reproducing will now be described with reference to FIG. 3, taking the magnetic heads A1 and B1 as an example. The magnetic tape T is wound around the rotary head drum 21 within an angle range of about 100 °. When recording, the rotary head drum 21
Writing is performed once during the two revolutions of. Eg 1
The recording scan of the head A1 shown by the solid line in FIG. 3 is performed during the second rotation, and the recording is not performed during the second rotation. Then, during the third rotation, the recording scan of the head B1 shown by the solid line in FIG. 3 is performed, and during the fourth rotation, the recording is not performed. With such an operation pattern, each track is formed by the heads A1 and B1 alternately with different azimuth angles.

On the other hand, at the time of reproduction, as described with reference to FIG. 16, the tracking control for matching the scanning locus of the magnetic head with the recording track is not performed. Therefore, a so-called double density scan is performed. As described above, the recording operation is 2
Since one track is recorded by rotation, the tape advances by one track by two rotations of the rotary head drum 21 during reproduction. That is, by taking in the data from the head A1 or B1 at each rotation, a double-density scan is performed on the track as shown by the alternate long and short dash line in FIG.

By the way, in the case of this example, the system is such that a magnetic tape is used reciprocally.
With the center line CT as a boundary, an upper track group (normal track) T _U and a lower track group (reverse track) T _L are formed. FIG. 3 shows only one of these. With the arrangement as shown in FIG. 2B, the upper head portion 9 (magnetic heads A1 and B1) is arranged as shown in FIG.
Recording / reproducing of the upper track group T _U , and recording / reproducing of the lower track group T _L of FIG. 4 can be performed by the lower head unit 10 (magnetic heads A2, B2). There is. Therefore, in the present embodiment, for example, when the upper head unit 9 is performing the reproducing operation of the track group T _U , the lower head unit 10 simultaneously reads the data from the track group T _L , and vice versa. Is also possible.

The upper head portion 9 and the lower head portion 10
Are attached to the same rotary head drum 21, and in the present embodiment, assuming that the rotation direction of the rotary head drum 21 is not reversed between the normal time and the reverse time, the head scanning direction for the track groups T _U and T _L is as shown in FIG. It becomes the same direction as shown in. On the other hand, the tape running direction is opposite between normal and reverse, and the traveling direction of the data in the track is the track group T as shown by the broken line in the figure.
_U and _TL are formed so as to extend from the vicinity of the center line CT toward the tape edge direction. This is necessary so that the upper and lower surfaces of the tape cassette can be reversed and loaded in the device (in the case of the reverse loading, the area of the track group T _{L in} the figure is the upper head portion). 9 will be recorded / played back). As described above, the track scanning direction and the data advancing direction of the track group T _L are opposite to each other. Therefore, in the data processing unit 3, the recording data / reproduction data of the track group T _L is track-by-track data order. Are rearranged so that the numbers are reversed.

Next, FIG. 5 shows the structure of the track TK on the magnetic tape in the non-tracking system. The track TK is each track recorded as the track groups T _U and T _L. As shown in FIG. 5A, one track is composed of 108 blocks. One block is 288
Is a bit. The central 92 blocks of the track are used as the main data area, and the inner 2 blocks of the 9 blocks are located on both sides of the main data area.
A double recording area and an outer double recording area of 7 blocks are formed.

In the inner double recording area, data having the same content as the block in the main data area, which is 92 blocks away from the position in the outer direction, is recorded. In the outer double recording area, 92 data is written inward from the position in the inner double recording area. Data having the same contents as the blocks in the main data area apart from the blocks are recorded. These are designed so as to complement each other even if the head contact position shifts due to the rocking of the tape, that is, unreadable blocks (data contents) do not occur in the data as blocks recorded in the main data area. I am trying.

In the main data area, two blocks in the center are subcodes (AUX), one block on each side is an IBG (Inter-block Gap), and four blocks on both sides are each.
The block is set as a control code (CTL) area. Then, data areas of 40 blocks are formed on both sides of the data area.

The signal format in one block in the data block is as shown in FIG. 5 (b). First 1
One bit is used as a sync pattern, and subsequently, the address ADRS is recorded with 13 bits. This address ADRS
Is composed of a 6-bit track address and a 7-bit block address. Since the track address and the block address are recorded in each block in this way, the data stream can be reconstructed in an appropriate block order during reproduction.

In the case of the non-tracking method, the track TK is not always traced accurately, so that it is possible to read all blocks for each track by performing the high-density scan described in FIG.
In this case, the reading order of each block is random. The read block data is temporarily stored in the data memory 4
At this time, a write address is generated on the data memory 4 using the track address and the block address, and each block data is written. Therefore, when all the blocks of a certain track have been read, the data of that track are lined up on the data memory 4. Therefore, if the block data is sequentially read from the data memory 4, it means that a proper data stream is reconstructed.

Following the address ADRS, 4 words of P and Q parity (P _OD , Q _OD , P _EV , Q _EV ) of 12 bits each
Is recorded. 16 words of data (L ₁ , R _{1 to} L ₈ , R ₈ ) each having 12 bits following the parity word
Is recorded. Following the 16 words of data, two CRC words are recorded with 12 bits each. Also, this C
An overwrite protect code (hereinafter referred to as OWP code) is recorded in the RC word.

In the non-tracking method, since the shift of the recording area is allowed, old data may remain unerased near both ends of the track. In addition, an unerased portion that is not erased during overwriting may occur due to dropout during recording, clogging of the head, or the like. When playing back, such unerased data is CRC.
Is safe and will be mistaken for correct data. Therefore, an OWP code is recorded as a code that is updated at each break of the recording operation.

At the time of reproduction, the OWP code is extracted from each block read for the track to be reproduced and scanned, and the reference OWP code is set by the majority decision. 1
If there is an unerased part in a certain part of the track,
The OWP code extracted from the unerased block is
It is different from the OWP code extracted from the overwritten block. Here, when a track is reproduced, even if a part of the track remains unerased, most of the overwritten blocks can be read. Therefore, by taking a majority decision as the OWP code, the OWP code on the majority side is set at the time of overwriting. It can be distinguished from the generated OWP code. Then, the OWP code is used as the reference OW.
When the P-code is set, and thereafter, for the reproduction for the series of recordings, it is possible to judge that the data of the block having a different OWP code is the unerased data and invalidate it, and output incorrect data. Can be prevented.

In the OWP code, the same two words are arranged and a 24-bit CRC and EX-OR are taken before recording. Therefore, at the time of reproduction, the OWP code can be restored by taking the EX-OR with the CRC generated from the reproduction data.

The signal format in one block in the CTL block is as shown in FIG. 5 (c). First, like the data block, the leading 11 bits are used as a sync pattern, and subsequently, the address ADRS is recorded with 13 bits. Then, CW ₁₆ , CW ₁₇ , CW ₁₈ , CW ₁₉ , CW
20 words CTL such as ₀ , CW ₁ ... CW ₁₅
Words are arranged. Following the 20 CTL words, 2 CRC words are recorded with 12 bits each.
An OWP code is also recorded in this CRC word.

20 word CTL words CW _{0 to} CW ₁₉
As shown in FIG. 6, various control data are recorded.
A detailed description of all of these is omitted, but as the CTL word CW ₀ , the format ID, compatibility ID, C
Level meter information and level envelope information as TL word CW ₁ , song time information and binary address as CTL word CW ₂ , recording date and time information as CTL word CW ₃ , OWP as CTL word CW _7.
Data, etc. are recorded.

Relevant to the operation of this embodiment, which is the main point of the present invention, is the inversion down counter recorded as the CTL word CW ₁₀ , the AMS recorded as the CTL word CW ₁₁ , and the CLT code serving as the inversion flag. . CTL
The format of word CW ₁₁ is shown in FIG. D0
5 bits for CTL word CW ₁₁ as 12 bits of D11
The song number is recorded in bits, and the skip flag, song beginning flag, in-tune flag, inversion flag, inversion flag, inversion ineffective flag, and model flag are recorded in each 1 bit.

The song number is a value that increases cyclically between 00000 and 11111, and at the time of recording, it is set as a value that is incremented for each song recorded.
2 and is arranged in the CTL word CW ₁₁ in the CTL block in the track TK. For example, if there is a silent period of about 4 seconds as recorded data, the controller 11 judges that it is a break of the song,
The music number added to the recorded data will be incremented. For example, on a magnetic tape, a track group T _U ,
Assuming that 6 songs are recorded through _{TL, the} song numbers assigned to the respective tracks TK are as shown in FIG. 8, and the values of A to F are values obtained by adding 1 to the previous value. Becomes

The skip flag is a flag for recording at a portion where the reproduction operation is desired to be skipped. For example, in a silent recording portion, the skip flag is set to 1 for a predetermined period at the head portion thereof. Then, at the time of reproduction, the recording / reproducing apparatus performs an AMS search from that point to the beginning position of the next music piece. The song head flag is a flag recorded as "1" in a period of about 10 seconds in the track portion which is the head of the song. The place where the song head flag = 1 is a place where the song number is incremented. The in-tune flag is a flag indicating that the song is in the song or not in the song.

The pre-reversal flag indicates the reversal area before reversal. Further, the post-inversion flag indicates the inversion area after the inversion. In the case of reciprocating recording / reproducing as in the present embodiment, the outward traveling is reversed at a certain timing before reaching the tape end, and the traveling to the returning traveling is performed.
Moreover, it is attempted to eliminate the break in the audio data at the time of this inversion, but the inversion point in that case is indicated by the before-inversion flag and the after-inversion flag. That is, as shown in FIG. 8, the track TK which becomes an inversion area.
The pre-reversal flag and the post-reversal flag are recorded to control the reversing operation. The inversion invalid flag is a flag that is set when it is desired to invalidate the pre-inversion flag and the post-inversion flag for some reason.

Further, the inversion down counter recorded as the CTL word CW ₁₀ is recorded in order to set the inversion timing at the inversion point, and the value down-counted in the track TK near the inversion area is recorded. To go. With the value that serves as the reversal down counter, it is possible to detect the time until the reversal point is reached near the reversal region (the time at the reproduction traveling speed).

In the present embodiment, in addition to the reversal processing using the pre-reversal flag and the post-reversal flag, the reversal processing using the song number and the traveling speed deceleration processing using the reversal down counter value at the time of the search operation are performed. In addition, an accurate search operation is realized. Since the tape is run at a high speed during the search operation, the trace by the magnetic head is largely inclined with respect to the track as shown by the broken line in FIG. Therefore, during the search, there are some data that cannot be read from the tracks, that is, there are many tracks that cannot read the CTL word. At this time, if the CTL word cannot be read at the inversion point, accurate inversion control will not be performed. However, in the present embodiment, the inversion point is eliminated, and in some cases, the inversion point is not By turning it around in the front, unnecessary tape running can be eliminated.

Therefore, in order to detect the track number during the search, not only the side of the track group T _U , T _L currently being searched but also the track number of the other track group is detected. For example, when the upper head unit 9 is performing the heading search operation for the track TK of the track group T _U , the lower head unit 10 reads the reproduction data of the track TK of the track group T _L , and the controller 11 The music number recorded in the CTL word therein is discriminated.

As a basic operation direction, as shown in FIG. 8, at the time of reproduction and FF-AMS (fast forward search), the upper surface (track group T _U ) is scanned from the tape top to the tape end direction and then inverted. The tape running is reversed at a point, and the lower surface (track group T _L ) is scanned in the tape top direction. REW
-At AMS (rewind search), the opposite is true.

If the data on the upper and lower surfaces of the tape can be reproduced at the same time and the music numbers on the upper and lower surfaces can be discriminated at the same time, the combination of the music numbers obtained from the upper and lower surfaces is as follows. ) (C) There are three ways. (B) ... Song number is the same (b) ... Song number is different by 1 (c) ... Song number is different by 2 or more For example, as shown in FIG. If the tape top side is searched for in the example where the tape is recorded, the combination of music numbers obtained before reaching the tape end is AF, AE, BE, B-.
D, C-D, and C-C. Of these, AF, AE,
In the case of BE and BD, it corresponds to the above (c), and C-
The case of D corresponds to (b), and the case of CC corresponds to (a).

First, when the state (a) or (b) is obtained, it can be determined that the reversal point is approaching.
Here, in the case of (a) as the search operation control, it is understood that the reversal may be performed at that time even if the reversal point is not reached. For example, in the case of performing a FF-AMS to search for a song D when the tape in the recording state (song numbers A to F) as shown in FIG. It is assumed that the condition (a) is satisfied at the start of the search as shown in FIG. 9 (b). Then, it is possible to determine that the song D is on the lower surface side and is on the tape top side from the current position, and therefore, by reversing at that point, it is possible to quickly access the beginning of the song D. Similarly, when searching from song B to song D, as shown in FIG. 9C,
By reversing when the condition (a) is satisfied, the song D
Allows quick access to the beginning of the song. Of course, in this case, the vehicle will not run past the reversal point to the tape end.

Further, in the case of (b), there is a difference between the case where there is one more piece to the target piece and the case where the target piece has two or more pieces. If the target song is more than one, you can reverse it at that time. For example, in FIG.
Considering the recording states of the songs A to F as shown in (d), the song F or the song E at a point in the middle of the song C as shown in FIG. 9 (e).
Consider the case of performing a search for. At this time, since the lower surface side is the music D at the start of the search, it is understood that it is in the state of (B), and the music F or the music E is separated from the current music C by two or more music. Here, since it can be seen that the target music piece is recorded in the tape top direction rather than the music piece D on the lower surface side, it is possible to quickly search up to the music piece F or the music piece E by reversing it immediately.

In the case of (b), if there is one more song to the target song, it can be determined that the opposite surface (lower surface side) song is the target song. In this case, the operation moves to an operation of searching for the head position of the music on the opposite side. However, the combination of (b) is obtained when the inversion point is relatively close. Here, when the music on the opposite side is found to be the target music, the reverse search or the music head information in the CTL code may not be read in the normal search processing as it is, and a malfunction may occur. Therefore, in this embodiment,
The reversal down counter value is monitored, and when the reversal point is further approached, the tape running speed is decelerated (for example, the normal reproduction speed) to prevent mistakes in finding the head position and the reversal point. . For example, in the case of accessing the song D from the middle of the song C, after the search is started as shown in FIG. 9F, the deceleration processing is performed during the period indicated by the alternate long and short dash line so that the beginning of the song D can be accurately found. I have to. In the present embodiment, the deceleration process is performed when the reversal point reaches 2 seconds.

It should be noted that there are five possible changes in the song number near the inversion point, as shown in FIGS. 10 (a) to 10 (e). FIG. 10 (a) shows the case where the reversal point is the break of the song, and FIGS. 10 (b) and 10 (c) show the break of the song just before and just after the reversal point (within 2 seconds from the reversal point). If it exists. Also, FIG.
0 (d) (e) is the case where the break of the music exists at a position relatively distant from the inversion point.

Considering the case where the song D is searched from the middle of the song C, if the state of FIG. 10D is assumed, the song D is found at the time when the search is performed at a high search speed. You can, and you won't go past the reversal point. In the case of FIG. 10 (e), (a), that is, by inverting at the time when the upper and lower tune numbers C-C are reached, it is possible to find the beginning of the tune D existing on the lower surface side. There is no fear of passing.

However, in the cases of FIGS. 10A to 10C, if the search is performed at high speed, the reversal point may be missed in some cases. In such a case, as described above, if the CTL word from each track can be read well by decelerating when the position reaches the reversal point within 2 seconds, for example, the reversal point and the beginning flag Can be found, and malfunctions can be eliminated.

Next, if the above condition (c) is obtained during the search, the target music can be found by continuing the search as it is, or the condition (b) or (a) should be entered. become. For example, when the song C is searched from the middle of the song A, the beginning of the target song C can be found by continuing the search as shown in FIG. 9 (g). When the target music piece is the music piece D, the state of (b) is obtained at a predetermined time point after proceeding to the music piece C as shown in FIG. 9 (h).
In this case, it means that the target song was found on the opposite surface at a point relatively close to the reversal point, and if it does not remain in the state of (a) as described above, decelerate at the point 2 seconds before the reversal point. Go to the beginning of song D.

11 and 12 show the processing of the controller 11 for realizing the reversing operation at the time of such a searching operation, speeding up the search, and preventing the reversal point from being overlooked.
Shown in FIG. 11 shows the processing at the time of AMS-FF, and FIG. 12 shows AM.
This is processing at the time of S-REW.

As shown in FIG. 11, when the AMS-FF operation is performed, the controller 11 sets the target music piece as the X music piece ahead of the current music piece according to the operation (F101 → F10).
2). And the variable n for counting the change of music is set to 0.
Set to (F103) and start FF running (fast forward running)
(F104). It should be noted that the FF traveling is a high-speed traveling in the direction toward the tape end when the reproduction mode is currently on the upper surface side and toward the tape top when in the reproduction mode on the lower surface side.

CTL read during FF running
The beginning flag is monitored from the data, and the beginning flag = 1
If, that is, the beginning of a certain piece of music is detected, the variable n is incremented (F105 → F106). Here, X and n are compared, and if X = n, the target song is found, and the beginning of the song is reproduced and the search ends (F107 → F108). For example, if the target song is the next song, X = 1
If this is the case, after the start of the search, the beginning playback is carried out when the beginning flag = 1 is detected. If it is determined in step F107 that X = n is not satisfied, the search traveling is continued.

During the search running, whether the tape end (tape end or tape top) has been reached (F109), whether the reversal point has been reached (F110), or the upper surface music number M _U = lower surface music Whether the number M _L is reached (F111) or the difference between the song number M _U on the upper surface side and the song number M _L on the lower surface side is 1 (F112) is monitored.

When the tape is to be reversed at the reversal point as described above, the tape should not run past the reversal point to the end of the tape, but if there is no reversal point or the tape top side In some cases, such as when traveling toward, the tape may be run to the end. Therefore, when the tape end is reached, the flow advances to step F117 to reverse the tape running direction, and the flow returns to step F105. Also, if an inversion point is detected, step F117
The tape traveling direction is reversed by proceeding to step F105, and the process returns to step F105.

However, in actuality, before the reversal point is detected, first, the song number M _U on the upper surface side = the song number M _L on the lower surface side, or the song number M _U on the upper surface side and the song number on the lower surface side. A state where the difference in M _L is 1 is detected. M _U = M _L
If the above condition occurs, that is, if the above-described condition (a) occurs, the process may be reversed at that time. So step F1
From 11 to F117, the tape traveling direction is reversed and the process returns to step F105.

In step F112, the difference between the music piece number M _U on the upper surface side and the music piece number M _L on the lower surface side is 1 (above (b)).
, The current song (song number M) is detected.
It is determined whether the next music piece of ( _U ) is a target music piece, that is, whether the value of n + 1 is the same as the value of X (F113). If n + 1 = X, it can be seen that the music number M _L on the lower surface side is the target music. Further, it can be seen that if n + 1 = X is not satisfied, the reversal may be performed at that point. If n + 1 = X is not satisfied, after incrementing the variable n in step F116, step F117
Then, the tape running direction is reversed and the process returns to step F105. The reason for incrementing the variable n here is that the next music piece (lower surface music M _L ) is reversed without finding the beginning of the music piece and a search is performed in the reverse direction from the middle of the lower surface music M _L. That is, since the variable n, which should be performed at the beginning of the lower-side music M _L , is not incremented in step F106, it is counted in step F116.

If n + 1 = X in step F113, the music on the opposite side is the target music, and the beginning position of the music is searched. Here, when the target song is D, in the case as shown in FIG. 10D, the beginning flag can be found in step F105 before reaching the point 2 seconds before the reversal point, and the beginning playback process is performed in step F108. Can be executed. See also FIG.
If there in case shown in (e), it is then determined that _{M U = M L (= C} ) in step F 111, the tape running direction is reversed advances to step F 117. And then step F1
The song beginning flag can be found at 05, and the beginning playback process can be executed at step F108.

In the case of any of FIGS. 10A to 10C, however, the beginning of the song D cannot be found even if the reversal point approaches the point 2 seconds before the reversal point, and if the search is continued at high speed as it is, the reversal point is reached. There is also the risk of overlooking. Therefore, the controller 11 advances the process from step F114 to step F115 when it is determined that the reversal down counter value is two seconds before the reversal point, and performs the tape running deceleration process. For example, the normal playback speed is set so that all data on the track can be read. As a result, FIG.
In either case of (c), it is possible to accurately detect the beginning flag of the song D in step F105 or the inversion point in step F110, and if the beginning of the song D is found in step F105. In step F108, the head start playback process can be executed.

When the AMS-REW operation is performed next, as shown in FIG. 12, the controller 11 sets the target music as X music before the current music according to the operation (F201 → F202). . The destination position may be the beginning of the current song. In this case, X = 0 (0 song before) is set. And a variable n for counting the change of the song
Is set to 0 (F203), and REW traveling (rewinding traveling) is started (F204). The REW traveling is a high-speed traveling in the direction toward the tape top when the reproduction mode is currently on the upper surface side, and toward the tape end when in the reproduction mode on the lower surface side.

During REW running, C read out
The music head flag is monitored from the TL data, and when the music head flag = 1, that is, when the music head of a certain music piece is detected, first, X and n are compared at that time. If X = n, it means that the target song has been found, the beginning of the song is reproduced, and the search ends (F206 → F208). For example, if the search purpose is the beginning of the current song and X = 0, then X = n when the beginning flag = 1 is detected after the start of the search, and the beginning playback is performed. . If it is determined in step F206 that X = n is not satisfied, the variable n
Is incremented (F207) and the search traveling is continued.

Whether or not the tape end (tape end or tape top) has been reached during FF, as in FF.
(F209), whether the reversal point has been reached (F210), whether the song number M _U on the upper surface side = the song number M _L on the lower surface side (F211), the song number M _U on the upper surface side and the song number M on the lower surface side It is monitored whether the difference between _L is 1 (F212).

When there is no reversal point, or when the tape is running toward the tape top side, when the tape end is reached, the process proceeds to step F217 to reverse the tape traveling direction, and the process returns to step F205. Also, when the reversal point is detected, the process proceeds to step F217, the tape traveling direction is reversed, and the process returns to step F205.

When M _U = M _L , that is, when the above-mentioned state (a) is reached, it is sufficient to reverse at that point. Therefore, the process proceeds from step F211 to F217 to reverse the tape traveling direction, and the process returns to step F205. In this case, the reproduction mode on the lower surface side of the tape is changed to the reproduction mode on the upper surface side.

In step F212, the difference between the music piece number M _U on the upper surface side and the music piece number M _L on the lower surface side is 1 (above (b)).
If the state) is detected, the current song (song number M _L)
It is determined whether or not the value of the count number n is the same as the value of X for the scan of (F213). That is, if n = X in terms of the number of counts, it is understood that the current music head position is the target point and is approaching the reversal point.
On the other hand, if n = X is not satisfied, it is understood that the target position may be reversed at that point because it is the beginning position of the song number M _U on the upper surface side or the beginning position of the song number before that.

If n = X is not satisfied, the variable n is incremented in step F216, the process proceeds to step F217, the tape traveling direction is reversed, and the process returns to step F205. Here to increment the variable n is for reversed without found beginning of the song of the current song (M _L), performs the search in the tape top direction from the middle of the previous song (M _U). That is, since the count at the beginning of the previous song is not counted in step F207 for the variable n, it is counted in step F216. For example, FIG. 10 (d) (e)
At the time when the lower surface side partial search operation of the music D is performed, the music C on the opposite side or the music B before the music C is the target music,
When the upper surface curve becomes (C) with respect to the lower surface curve (D), it is reversed. At this time, since the music head position of the music D is not scanned, the variable n is incremented as its compensation operation.

If n = X in step F213, it suffices to find the beginning of the music currently being scanned on the lower surface side. For example, this is the case where the beginning of the song D is the objective in any of the states shown in FIGS. Here, in the case of FIG. 10E, the beginning flag of the song D can be found in step F205 before reaching the point 2 seconds before the reversal point, and since X = n, the beginning playback process is performed in step F208. I can do it. Also if there in case as shown in FIG. 10 (d), is then determined that _{M U = M L (= D} ) in step F 211, the tape running direction is reversed advances to step F 217. Then, at step F205, the beginning flag of the piece of music D can be found, and at step F208, the beginning playback processing can be executed.

However, in the case of any of FIGS. 10 (a) to 10 (c), the beginning of the song D cannot be found even if the reversal point approaches the point 2 seconds before the reversal point, and if the search is continued at high speed as it is, the reversal point is reached. There is also the risk of overlooking. Therefore, the controller 11 advances the process from step F214 to F215 when it is determined that the reversal down counter value is two seconds before the reversal point, and performs the tape running deceleration process. For example, the normal playback speed is set so that all data on the track can be read. As a result, FIG.
In either case of (c), song D is performed in step F205.
Or the inversion point can be accurately found in step F210, and the beginning of the song D is found in step F205, X = n at that point, so the beginning playback processing is performed in step F208. You can do it.

AMS-FF, AMS-RE as described above
By the processing at the time of W, in the present embodiment, there is no case that the reversal point is overlooked during the search and the reversal is not performed, and unnecessary tape running is not performed when the state of (a) or (b) occurs. In addition, the search operation can be speeded up.

As a modified example of the above embodiment, an example in which the search can be sped up further will be described. Since the top and bottom song numbers are detected at the same time, if it is possible to detect that the target song is on the other face, the face currently being searched is searched up to the reversal point or tape end. There is no need.

For example, as shown in FIG.
For the tape in the state of (d), from the reproduction operation of the music B to the music F
Suppose you moved to the search for. At this time, the FF running is first performed toward the tape end side, but since the music number E is detected from the lower surface side, the target music F exists on the lower surface side on the tape top side than the current position. I understand. Therefore, the access time can be significantly shortened by immediately reversing. Further, as shown in FIG. 9 (j), when the reproduction of the music A is followed by the search of the music F, it is understood that the other surface of the current tape position is the music F. Therefore, if the song number on the lower surface side is monitored while the FF running toward the tape end side is performed and the song number is inverted when it reaches the song E, the beginning position of the song F can be found immediately after the inversion.

The processing of the controller 11 for realizing this operation in addition to the above processing is shown in FIG. Steps F301 to F304 of FIG. 13 are steps F101 to F1 of FIG.
The process is the same as 04. However, at the start of the FF search, in step F305, X is added to the current song number to set the value as the song number MM of the target song.

During the search, steps F105 to F108 in FIG.
Similarly, the variable n is incremented in accordance with the detection of the beginning flag, and at the time when X = n, the beginning playback processing is performed assuming that the target song can be found (F306, F307, F).
308, F309). Further, as in steps F109, F110, and F117 of FIG. 11, the tape running direction is reversed according to the detection of the tape end or the reversal point (F310, F311, F322). Further, the processing of steps F316 to F322 is the same as steps F111 to F117 of FIG.
Similar to the above process, the process is for inversion near the inversion point or for proper detection of the inversion point.

In this processing example, the processing in the case of proceeding from step F312 to F315 and step F315 to F322 is different from the example of FIG. That is, in step F 312, whether the music number M _L of the lower surface side during the search is smaller than the music number MM purposes songs, and in step F 313, music program number M _L of the lower surface side of the object song during the search It is determined whether or not it matches the number MM.

When it is determined in step F312 that M _L <MM, the music head of the target music piece is present on the tape top side with respect to the current position. That is, it can be seen that it may be reversed at that time. Also if it is to be M _L = MM in step F 313, by reversing when it becomes a M _L <MM as it is run on the tape end side, that is found in real songs heads purposes songs Obviously, it is sufficient to wait until M _L <MM and then reverse.

Therefore, if M _L <MM in step F312, the flow advances to step F314 to compare the OWP codes of the track having the music number M _U and the track having the music number M _L. If the OWP codes do not match, these 2
Since one song may have been recorded by a different recording process, or the track having the song number M _L may be unerased data, the current song number M is used as the song number.
_The series from _U may not have been recorded. Therefore, it may not be the target song in reality, so the reversal process is not performed (F314 → NO).

On the other hand, if the OWP codes are the same, the next piece of music on the lower surface side is the target piece. So after performing the processing of the n + (M _L -M _U) for the variable n (F 315), to reverse the travel direction in step F322. For variable n
+ Treatment (M _L -M _U) is program number M _U of the inversion point
For songs from the song of +1 to song number M _L step F3
This is to compensate for the fact that the music head flag is not detected in 06 and the variable n is not incremented in step F307.

After the inversion in this way, the beginning flag is detected in step F306, and if X = n at the time when the variable n is incremented, it means that the target song is found, and the beginning in step F309. Playback processing is executed.

By such processing, the operations shown in FIGS. 9 (i) and 9 (j) are also realized, and the access operation is further speeded up. In the case of AMS-REW as well, similarly, the music piece number of the target music piece is set, and when the target music piece is found on the multifaceted side, it is reversed to speed up the search. However, when AMS-REW sets the first current song number -X as MM, also perform the determination of M _U ≧ MM is determination processing corresponding to step F312 in FIG. 13, when the output positive result OWP The code may be checked, and the compensation processing of the variable n may be performed and inverted. Other processes may be similar to those in FIG.

As described above, in the present embodiment, the reproducing apparatus can speed up the search. However, as a premise of this, different song numbers as CTL data are recorded for each song recorded on the tape in the recording operation of the recording apparatus. Must be attached. Usually, for example, if you record 60 minutes from the beginning to the end on a 1/60 tape round trip, if 10 songs are included in it,
There is no problem because the song numbers from "Z" to "(Z + 9)" are assigned to each song. Here, "Z" is the song number used at the start of recording. For example, when the song number is 5 bits as shown in FIG. 7, "Z" is "0000".
If it is "0", then "(Z + 9)" is "0100
1 ”. That is, for example, "0" for 10 songs
This means that the song number "9" has been added.

However, at the start of recording, the song number = "0
If it is set to "0000", inconvenience occurs. For example, considering that the user was recording 10 songs while repeating recording / stopping for each song, all song numbers of each song are "00000", and the above-described search operation is impossible. Will be. Therefore, in this embodiment, the song number initially set at the time of recording is
The song number next to the song number at the end of the previous recording is set.

Generally speaking, in this embodiment, at the end of the recording operation, the song number added as one of the CTL data is stored in the nonvolatile RAM 24, and the next time recording is started. The song number of the previous time is read from the nonvolatile RAM 24, and a number obtained by adding 1 to the song number is set as the song number to be used first. FIG. 14 shows a pad chart of the process of setting the song number, song head flag, and song flag in the CTL data word CW11 during recording by the controller 11.

Note that, as shown schematically in FIG. 15, a track group in which one song is composed is given the same song number (song number A) as CTL data, and after the song changes. As the CTL data in the track,
The song number is an incremented value (song number B).
On the other hand, the tune head flag is added to the CTL data of the track for about 10 seconds at the beginning of the tune, and the in-tune flag is turned on for the subsequent tracks.

As shown in FIG. 14, when the recording operation is started (P101), the controller 11 first determines the nonvolatile RAM 2
The value of the song number used at the end of the previous recording is read from 4 (P102). Then, the input level information from the data processing circuit 3 is monitored (P103), and when the voice data to be recorded is input and an input level higher than a certain level is detected (that is, when the input of the song to be recorded is started, ), The value read from the non-volatile RAM 24 is set as the music number, and the value is set to 1 and transferred to the control data generating unit 12, and C
Set as the song number to be added as TL data (P
104). For example, if the value of the song number read from the nonvolatile RAM 24 is "00010", the song number of the song first recorded in this recording operation is "00011". That is, the bits D0 to D4 in FIG. 7 in the CTL block of the track recorded until the end of the music is detected are set to "00011".

Further, as one of the CTL data in the track recorded in the period of about 10 seconds from the start of recording, the music head flag is turned on (P105). That is, the bit D6 of FIG. 7 is set to "1" in the CTL block of the track recorded for about 10 seconds from the start of the music. The beginning flag is a flag used for a cue search during reproduction. After the writing of the music beginning flag for 10 seconds as the CTL data is completed, the controller 11 causes the control data generating unit 12 to set the middle music flag (P106). As a result, the state of bit D7 = “1” in FIG. 7 is maintained until the end of the song is detected thereafter.

In step P103, the input level is continuously monitored, but after the recording of the first song, the input level first becomes lower than the predetermined level, that is, when the silent state is reached, the first song is played. It is determined that it has ended. In this case, the process proceeds from step P103 to P107 and the in-tune flag is reset. That is, as the CTL data in the track recorded while the input is in the silent period, the in-tune flag is turned off.

Then, the routine of step P108 is entered. First, in step P109, the input level is monitored, and when the input of the next song is started and the input level becomes equal to or higher than a predetermined value, the state of the in-tune flag is determined in step P110. At this time, since the in-music flag is reset in step P107, the process proceeds to step P111, and the music number is set to the incremented value. For example, if the first song that was recorded immediately before was "00011", the song number of the second song that was started this time would be "0010."
0 ”.

Then, the music head flag is turned on as one of the CTL data in the track recorded in a period of about 10 seconds from the start of recording (P112). After the writing of the beginning flag for 10 seconds as the CTL data, the controller 11 causes the control data generator 12 to set the in-tune flag (P113). As a result, the state of bit D7 = “1” in FIG. 7 is maintained until the end of the song is detected thereafter.

During the period in which the music is continuously input after the music flag is set, the input level is detected at a predetermined level or more in step P109, and it is determined that the music flag is not turned off in step P110. , In step P114, the count value of the silent timer is reset to "0". This process is continued until the input level becomes equal to or lower than the predetermined value and a so-called silent state is detected.

When the silent state is detected, the process proceeds to step P115, and the in-tune flag is confirmed. If the in-tune flag is on, the silence timer is incremented by 1 (P118).
For example, if there is a momentary silence period (for example, 2 seconds or less) in the middle of the song, when the input level increases again, the process goes to steps P109 → P110 → P114, and the silence timer is reset. It will continue after that.

In this embodiment, it is determined that the music has changed in a silent period of 2 seconds or more. Therefore, when the input level becomes equal to or lower than the predetermined value, the silent timer is counted in step P116, and it is confirmed in step P117 whether the silent period has reached 2 seconds. When the value of the silent timer is 2 seconds or more, the process proceeds to step P118, and the in-tune flag is reset. Thereafter, the process returns to step P109, and the processing of the routine of P109 to P118 shown as step P108 is repeated until the end of recording.

When the user presses the stop key to end the recording operation, or when the recording operation is ended when the tape end is reached, the controller 1
1 is the process of step P119, in which the value of the music number set in the control data generator 12 at that time is stored in the nonvolatile R
Store in AM24. That is, the song number last used in the recording operation this time is stored. This will be read in step P102 at the start of the next recording, and the first song of the next recording will be given a song number following this time. When the storage process in the nonvolatile RAM 24 is completed, the required process is performed to end the recording operation (P120).

By setting the song numbers as described above, for example, even if many songs are recorded while recording / stopping is repeated, each song has a different song number on the tape. Therefore, the search operation using the above-mentioned music number is suitably performed.

In the processing of the embodiment shown in FIG. 14, the song number at that time is stored at the end of recording, but at the end of recording, the value obtained by adding 1 to the song number at that time is stored in the nonvolatile R
The music number may be stored in the AM 24, and the music number read from the nonvolatile RAM 24 may be used as it is as the first music number at the start of recording.

Further, in the case of this embodiment, 5 bits are assigned as the music number. In other words, the song number value is 0-3
Can only be given up to 5. Therefore, for example, when 37 or more songs are recorded on one tape, the song numbers may be duplicated. In such a case, it is preferable to simultaneously check the above-mentioned OWP code in order to prevent a malfunction in the search operation. However, if about 10 bits are assigned as the music number, it is considered that there is almost no music having the same music number on one tape.

Although the embodiments as the reproducing apparatus and the recording apparatus have been described above, it goes without saying that the processing examples are merely examples and various other modified examples can be considered. Further, the configuration of the recording / reproducing device is not limited to the example of FIG.

[0104]

As described above, in the reproducing apparatus of the present invention, the head means can read the data of the forward track group and the backward track group at the same time, so that the other track group can be read during the search. From the obtained data number information, it is possible to determine the shortest operation to the search target location. Further, from the data number information of the track group currently being searched and the data number information of the other track group that can be read at the same time, it is possible to determine that the reversal position is approached, that it is not the reversal position but may be reversed. Therefore, there is an effect that a quick search operation can be realized, and an operation error of missing a reversal point during a search can be eliminated.

Further, when it is detected that the reversal point is approached by the data number information or the time information to reach the reversal point, the reversal point information can be read through by controlling so as to reduce the search speed. It can be prevented more reliably.

Further, in order to favorably execute the above search operation, the recording apparatus of the present invention stores the value of the data number information (song number) used at the end of the recording operation or the value obtained by adding 1 to the value. The value stored in the storage means is used at the start of the next recording,
The value of the first data number information is set to be the value following the data number information at the end of the previous recording. Therefore, 1
It is almost impossible to have multiple data units (songs) with the same data number information on one tape.
Malfunctions are eliminated by the search operation using the data number information, and the improvement of the search performance by the reproducing device functions more effectively.

[Brief description of drawings]

FIG. 1 is a block diagram of a recording / reproducing apparatus according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram of a structure of a magnetic head portion of the recording / reproducing apparatus of the embodiment.

FIG. 3 is an explanatory diagram of a trace state of a magnetic head by the recording / reproducing apparatus of the embodiment.

FIG. 4 is an explanatory diagram of a track state on a tape by the recording / reproducing apparatus of the embodiment.

FIG. 5 is an explanatory diagram of a track format in the non-tracking method.

FIG. 6 is an explanatory diagram of CTL words in the non-tracking method.

FIG. 7 CTL word C in non-tracking method
It is explanatory drawing of W ₁₁ .

FIG. 8: Song number, reversal point, FF / REW in the example
It is explanatory drawing of a search direction.

FIG. 9 is an explanatory diagram of a search operation according to the embodiment.

FIG. 10 is an explanatory diagram of various song number states of the embodiment.

FIG. 11 is a flowchart of an FF search process according to the embodiment.

FIG. 12 is a flowchart of REW search processing according to the embodiment.

FIG. 13 is a flowchart of another FF search process according to the embodiment.

FIG. 14 is a pad chart of a music piece number setting process during recording according to the embodiment.

FIG. 15 is an explanatory diagram of a recording state of a song number, a song head flag, and a song flag in the embodiment.

FIG. 16 is an explanatory diagram of a non-tracking method.

[Explanation of symbols]

 1 Input Terminal 2 Output Terminal 3 Data Processing Section 4 Data Memory 5 Modulation Circuit 6 Detection Circuit 7 RF Amplifier 8 Rotary Transformer 9 Upper Recording / Reproducing Head Section 10 Lower Recording / Reproducing Head Section 11 Controller 12 Control Data Generation Section 24 Nonvolatile RAM

Claims (3)

[Claims] 1. A tape-shaped recording medium, in each of the two areas divided by the center line, a forward track group corresponding to one tape running direction, and a backward track group corresponding to another tape running direction. Is formed and each track is recorded with data number information that is updated for each data unit. When a search operation of a certain data unit is performed from a reproducing means in one of the track groups on the forward path or the return path, the head means capable of simultaneously performing data reading, the head means of the one track group. The data number information obtained from the tracks and the data number information obtained from the tracks of the other track group are used during search operation. Reproducing apparatus characterized by comprising: a control unit capable of performing a reciprocating path inversion control as the search direction of travel, the. 2. A tape-shaped recording medium, in each of the two areas divided by the center line, a forward track group corresponding to one tape running direction and a backward track group corresponding to another tape running direction. And the data number information that is updated for each data unit is recorded in each track, and the reversal point information and / or the reversal point are recorded in the reciprocating path traveling reversal point and the tracks in the vicinity of As a reproducing apparatus corresponding to a recording method in which time information up to the time is recorded, a head means capable of simultaneously performing data reading with respect to a track of a forward track group and a track of a return track group, and a forward means or a backward path When a search operation of a certain data unit is performed from the reproduction point in one of the track groups, the one head track is used by the head means. Search operation using all or part of the data number information obtained from the other track group, the data number information obtained from the other track group, the reversal point information, and the time information up to the reversal point. A playback device comprising: a control unit capable of performing a reciprocal path reversal control as a search speed and a search advancing direction therein. 3. A tape-shaped recording medium, in each of the two areas divided by the center line thereof, a forward track group corresponding to one tape running direction and a backward track group corresponding to another tape running direction. A recording device that records data number information that is updated for each data unit on each track, and that stores a value relating to the data number information that was used at the end of the recording operation; Data number setting means for setting the value of the first data number information used at the start of the operation to the value next to the value used at the end of the previous recording operation by using the value stored in the storage means. And a recording device.