JPH0589561A - Digital tape recorder - Google Patents

Abstract

PURPOSE:To provide a digital tape recorder capable of recording so as to permit repeated reproduction without requiring the rewinding of the tape and without producing silent period, as to a digital tape recorder equipped with a rotary fixed head for reciprocal reproducing. CONSTITUTION:This system is provided with a position calculation means calculating a reversing positions t1,2 and a recording end position tEND so that a head 1 can be reciprocated on both sides of the tape and perform recording in a shape of a loop during the reproducing time T of a reproducing source to be recorded, a position detection means detecting that a running tape 3 reaches the respective positions, and an ID recording instruction means instructing the record of an ID code indicating the respective position at each position detected. At the time of recording, an reversing ID is recorded on the tape at the obtained position and the running direction of the head 1 and the tape 3 is reversed, and an end ID is recorded at the obtained recording end position and the recording is ended.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a digital tape recorder having a rotary fixed head for reciprocal recording.

[0002]

2. Description of the Related Art When a reproduced music piece such as a CD is recorded on a conventional analog recording type cassette deck, a method shown in FIG. 6 is used. That is, FIG.
The following shows an example of recording when recording two CDs with playing times of 45 minutes and 40 minutes on a 0-minute tape.
Disk (DISK) 1 from the beginning of side A, DISK 2
Is recorded from the beginning of the B side.

[0003]

On the tape recorded as described above, for example, when it is attempted to repeatedly reproduce only the music of DISK 1 (so-called repeat reproduction), A
It is necessary to rewind the tape to the beginning of the A side once the reproduction of the side is completed, and there is a problem that the reproduced sound is interrupted during this time.

Further, even if a repeat reproduction is attempted through two of DISK1 and DISK2, a silent state is produced unless both recordings of DISK1 and DISK2 end at the tape ends of the A side and the B side. There was a problem that it would end up. For example, in the case of FIG. 6, after the reproduction of DISK2 is completed, the tape is in a silent state while being fed to the head position of DISK1.

The present invention has been made in view of the above circumstances, and it is an object of the present invention to perform recording so that repeat reproduction can be performed without rewinding the tape and without producing a silent period. It is to provide a digital tape recorder.

[0006]

To achieve the above object, the present invention provides a digital tape recorder having a reversible fixed head for reciprocal recording, in which the head is a tape during the reproduction time of the reproduction source to be recorded. Position calculating means for calculating the reversal position of the head and the recording end position so as to make a loop recording by reciprocating on both sides, position detecting means for detecting that the running tape has reached each position, and the detection. I for each position
An ID recording instruction means for instructing recording of the D code,
When recording, flip ID on the tape at the obtained flip position
Is recorded, the running direction of the head and the tape is reversed, the end ID is recorded at the obtained recording end position, and recording is ended.

[0007]

[Operation] The principle of the present invention will be described with reference to FIG. In the present invention, the reproduction time of the reproduction source for recording is required as the basic information. For example, when the reproduction source is a CD, when the CD is loaded, the CD player automatically reads the TOC information in the lead-in area, Since the number, the playing time, etc. are displayed on the display, the displayed playing time may be input as the playing time from the ten-key pad or the like.

Let T be the reproduction time of the input source. The position calculation means calculates the reversal position of the head and the recording end position so that the head reciprocates on both sides of the tape AB during the reproduction time T and is recorded in a loop.

That is, in FIG. 1, when t ₀ is the recording start position, first, the time from t ₁ to t ₂ on the side B opposite to the start position is ½ · T (= half the reproduction time). ). The time from t ₀ to t _{1 on} the A surface is (1/2) T · α, and t ₂ to t on the A surface.
The time until _END (actually t _END = t _0. Separately shown for convenience of explanation) is set to be (1/2) T · (1-α).

The above α is an arbitrary value in the range of 0 to 1.0, and the recording start position t ₀ is changed by changing the value of α.
You can change the relative position of the left and right. This α may be set as a fixed value in a ROM or the like in the device when the tape recorder is manufactured, or may be arbitrarily set by the user during recording.

As described above, t₁, T₂, T_ENDof
After setting the position, start position t ₀Start with (S
T) Record the ID and at the same time record the playback source such as CD.
Playback operation is started and the source playback signal is t₀Recorded from position
Sound starts. Then, the first inversion position t₁Is reached,
Running the head and tape after recording the first reverse ID1
Reverse direction, t₂Continue recording towards the position.

When the second reversal position t ₂ is reached, after the second reversal ID 2 is recorded, the running direction of the head and the tape is reversed again, and recording is continued toward the t _END position. When the recording end position _tEND is reached, the reproduction time T elapses and the reproduction of the source ends. Therefore, after recording the end (END) ID indicating the recording end position at this position, the recording ends.

As a result of the series of recording operations, on the tape, as shown in FIG.
Recording is done in a loop that loops on both sides. Therefore, if such a loop-recorded tape is played back, the playback can be started from the ST.ID position and automatically looped to the END.ID position. As a result, even if repeat reproduction is performed, the reproduction can be immediately repeated from the recording start position t ₀ without the need to rewind the tape.

In FIG. 1, the recording start position t₀On side A
I took to the side, but this start position t ₀For side B
Good. Start position t₀If you take the B side,
If the above-mentioned positional relationship is switched between A side and B side,
In theory it is exactly the same.

[0015]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 2 shows an embodiment of a digital tape recorder provided with a reversible fixed head according to the present invention. For convenience of explanation, only the recording system is shown and the reproducing system is omitted.

In FIG. 2, reference numeral 1 denotes a reversing type fixed head portion. In this fixed head unit 1, for example, nine digital recording heads 2 ₀ to 2 ₈ from 0 ch (channel) to 8 ch are arranged inline as shown in the figure, and digital data is recorded in a parallel inline format tape 3 It is configured to record on. The 0ch head 2 ₀ is a head for recording necessary subcodes such as ST / ID, inverted ID, and END / ID required in the present invention described above, and the ₁ to 8ch heads 2 ₁ to 2 ₈ are reproduction signals such as music. Is a head for recording.

Reference numeral 5 is a digital signal processing unit, 6 is an A / D converter, 7 is a head inversion drive unit, 8 is a tape running drive unit, 9 is a time counter, 10 is ROM, and 11 is RA.
M and 12 are operation panel units provided with a numeric keypad and various switches, 13 is a CPU, and 14 is a CD player for reproducing a CD serving as a reproduction source.

In the above embodiment, a reproduction time of 45 minutes C
Taking the case of recording D as an example, the operation will be described with reference to the flowchart of FIG. 3 and the tape recording state diagram of FIG.

When a CD is loaded into the CD player 14 for playback, the CD player will read the T in the lead-in area of the CD.
The OC information is automatically read out, and the number of songs and the total playing time thereof are displayed on the display array (step S1). The user sees this display and inputs 45 minutes as the reproduction time T from the ten keys of the operation panel unit 11 (step S).
2).

Based on the reproduction time T = 45 minutes, the CPU 13 outputs the time from the recording start position t ₀ to the first reversal position t ₁ and the first reversal position t _{1 as shown in FIG} . Two
To the reversal position t ₂ and the time from the second reversal position t ₂ to the recording end position t _END (= t ₀ ) are calculated and stored in the RAM 11 (steps S3 and S4).

FIG. 4 shows an example of the case where α = 0.8 in FIG. 1, and since the reproduction time T of the CD is T = 45 minutes as described above, the time from t ₀ to t ₁ is (1 / 2) T ・ α
= 18 minutes, the time from t ₁ to t ₂ is 1 / of the playback time T
2 is 22.5 minutes, and the time from t ₂ to t _END is (1
/ 2) T · (1-α) = 4.5 minutes.

When the reproduction of the CD is started and the recording start command is given from the operation panel section 12 after the respective times are calculated, the CPU 13 causes the tape running drive section 8, the head inversion drive section 7, and the digital signal processing section. Control 5 and CD
The digital recording of the reproduction signal sent from the player 14 is started (step S5).

At the same time when the recording is started, the CPU 13
A start (ST) ID code is read from the ROM 10 and this ST / ID is sent to the digital signal processing section 5 together with an ID recording command. In accordance with this instruction, the digital signal processing unit 5 records the ST ID from the 0ch head 2 ₀ at the recording start position t ₀ as shown in FIG. Further, the time counter 9 for time monitoring is started (step S6).

When the recording on the side A progresses and the tape 3 reaches the first reversal position t ₁ , the count value of the time counter 9 becomes 18 minutes. The CPU 13 uses this count value 18
From the minutes, it is detected that the tape has reached the _first inversion position t ₁ (step S7), and the digital signal processing unit 5 receives the first signal.
And sends a reversing command to the head reversing mechanism unit 7 and the tape running drive unit 8.

According to the instruction, the digital signal processing section 5 records the first inverted ID1 at the first inverted position t ₁ as shown in FIG. 4 (step S8). Further, the head reversing mechanism section 7 and the tape running drive section 8 reverse the running directions of the head section 1 and the tape 3 (step S).
9). As a result, the recording surface is switched from the A surface to the B surface, and the reproduction signal input from the CD player 14 is recorded on the B surface (step S10).

When recording on the B side progresses and the tape 3 reaches the second reversal position t ₂ , the count value of the time counter 9 becomes 40.5 minutes (= 18 minutes + 22.5 minutes). CPU13
Detects that the tape has reached the _second reversal position t ₂ from this count value of 40.5 minutes (step S11), sends a write command of the second reversal ID2 to the digital signal processing unit 5, and simultaneously moves the head reversal mechanism. A reversing command is sent to each of the section 7 and the tape running drive section 8.

According to the instruction, the digital signal processing unit 5 records the second reverse ID 2 at the second reverse position t ₂ as shown in FIG. 4 (step S12). Further, the head reversing mechanism section 7 and the tape running drive section 8 reverse the running directions of the head section 1 and the tape 3 (step S1).
3). As a result, the recording surface is switched from the B surface to the A surface, and the reproduction signal input from the CD player 14 is recorded again on the A surface (step S14).

When the recording on the side A progresses and the tape 3 reaches the recording end position t _END , the count value of the time counter 9 becomes 45 minutes (= 18 minutes + 22.5 minutes + 4.5 minutes). CP
From this count value of 45 minutes, U13 detects that the tape has reached the recording end position t _END (step S1).
5) Sending an END / ID writing command to the digital signal processing unit 5 and sending a tape running stop command to the tape running driving unit 8.

According to the instruction, the digital signal processor 5 records the END / ID at the recording end position t _END as shown in FIG. 4 (step S16). Then, after recording the second reverse ID 2, the tape running drive unit 8 stops the running of the tape 3 (step S17),
At the same time as the reproduction of the CD ends, the digital recording automatically ends.

As a result, the reproduction signal for the CD 45 is recorded on the tape 3 in a loop as shown in FIG. Therefore, if the tape recorded in a loop as shown in FIG. 4 is played back, the head is always positioned immediately before ST • ID when the loop playback is completed. Since the first tune of the above can be immediately reproduced, there is no need to rewind the tape as in the conventional case.

In the above embodiment, the reproduction of the CD and the recording operation of the digital tape recorder were manually performed, but if the CD synchronization is adopted, the CD recording can be automatically performed.

FIG. 5 shows an application example of the present invention. This Figure 5
In the above example, two CDs are recorded in a loop using the present invention. In the case of the present invention, DISK1 and DISK2
No matter how long your playing time is
Since the recording can be performed so that the STID of DISK2 comes immediately after the END ID of K1, it is possible to continuously repeat the reproduction of two CDs without having to rewind the tape.

[0033]

As is clear from the above description,
When the digital tape recorder according to the present invention is used, since the head can reciprocate on both sides of the tape to record in a loop during the reproduction time of the reproduction source to be recorded, it is possible to reproduce the tape thus recorded. For example, repeat playback can be performed without the need to rewind the tape and without a silent period.

[Brief description of drawings]

FIG. 1 is a diagram illustrating the principle of the present invention.

FIG. 2 is a block diagram showing an embodiment of the present invention.

FIG. 3 is a flowchart of the operation of the embodiment.

FIG. 4 is a diagram showing a recording state in the example.

FIG. 5 is a diagram showing an application example of the present invention.

FIG. 6 is a diagram showing a conventional recording example.

[Explanation of symbols]

1 Reversal type fixed head section 2 _0-8 Digital recording head 3 Tape 5 Digital signal processing section 7 Head reversing drive section 8 Tape running drive section 9 Time counter 11 RAM 12 Operation panel section 13 CPU 14 CD player t ₀ Start recording Position t ₁ First reverse position t ₂ Second reverse position t _END Recording end position T Source playback time

Claims (1)

[Claims] 1. A digital tape recorder equipped with a reversible fixed head for reciprocal recording, wherein the head is reciprocated on both sides of the tape during a reproduction time of a reproduction source to be recorded so that the head is recorded in a loop. Position calculation means for calculating the reversal position and the recording end position, position detection means for detecting that the running tape has reached each of the positions, and an instruction to record an ID code indicating each position at each detected position. ID recording instructing means for recording, and at the time of recording, reverse ID on the tape at the obtained reverse position.
Is recorded, the running direction of the head and the tape is reversed, the end ID is recorded at the obtained recording end position, and recording is ended.