JPH05101619A - Digital recording and reproducing device - Google Patents

Abstract

PURPOSE:To inform a user with a display means the fact that information of music number is not fallen in the normal order of integers on a digital recording medium by deciding the fact. CONSTITUTION:The digital recording and reproducting device is provided with a digital signal input terminal 2 and an analog output terminal 3, and is constituted of a signal processing device 4 by which errors are corrected, etc., a RF amplifier for signal modulation, a D/A converter 6, and a micro computer 7, etc., by which reproducing is controlled. By the micro computer 7, the function to detect whether or not the music number information is fallrn in the order of integers is activated. That is, the travelling direction of the recording medium is first judged and upon the result (anterior, posterior) of the judgement, each separate process is carried out.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a digital recording / reproducing apparatus such as DAT or DCC, and more specifically, it sequentially feeds or winds a recording medium with music number information attached to each of a plurality of music recorded on the recording medium. The present invention relates to a digital recording / reproducing apparatus having a function of detecting while returning.

[0002]

2. Description of the Related Art In a digital recording / reproducing apparatus such as a DAT, a so-called start ID indicating the beginning of a song at the beginning position of each of a plurality of songs recorded on a recording medium (magnetic tape).
Or song number information indicating the order of the songs is recorded. When the desired music is searched for, a search is made while the DAT reproducing head reads the start ID, music number information and the like.

The DAT has a function of automatically recording the start ID and song number information at the beginning of each song each time the song changes.
D, the automatic assignment of song number information is limited to the case where recording is started after the tape is completely rewound, and in other cases (for example, when the start ID is manually recorded), all song number information is uniformly used. A non-integer "AA" is added.

Therefore, except when the recording is started after the tape is completely rewound as described above, the music number information on the tape is not in an integer sequence (1, 2, 3, 4, ...). (Eg 1, 2, AA, 4, AA, ...
・), Even if a cue search is performed later, there is a disadvantage that the desired song is not found. For example, in the above example, the song No. 3 cannot be found. Therefore, when such an inconvenience occurs, the music number information, which is a known renumbering function of the DAT, is searched in order from the beginning of the tape, and is searched in an integer order (1, 2, 3, 4, ...
・) The function to rewrite is used, and the user can select and operate it.

[0005]

However, the fact that the music number information on the tape is not arranged in an integer order means that, as described above, a specific operation such as the cueing operation of the desired music is usually performed.
Only when it fails, the user can notice the defect for the first time, and if after recording, do not perform the cueing operation as described above and immediately rewind the recorded tape to another If you take actions such as providing to users,
Although the other user is suspicious about the failure of the cueing operation, there is an inconvenience that an appropriate measure such as renumbering cannot be taken. It should be noted that if you are careful, you can perform the above-mentioned renumbering operation every time you record, but that takes extra time and time, and for tapes with song number information in integer order properly attached. Performing a renumbering operation is also useless. Therefore, according to the present invention, when the tape number operation such as reproduction, fast-forwarding or rewinding is performed when the music number information is not arranged in the integer order as described above, a message is immediately issued to warn of the defect. It is intended to provide a digital recording / playback device.

[0006]

According to the present invention, in the above-mentioned digital recording / reproducing apparatus, it is determined whether or not the music number information to be sequentially detected at the time of forward or rewind is an ascending or descending integer order. Means and display means for issuing a warning based on the judgment of the judgment means. Further, when each piece of music number information detected sequentially is not an integer, a second judgment means for displaying a warning on the display means may be further provided.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS DAT will be described below as an embodiment of the digital recording / reproducing apparatus according to the present invention. FIG. 2 shows a functional block configuration. The DAT (1) of this embodiment has an input terminal (2) for inputting an external digital signal and an analog output terminal (3), and a device for outputting an external digital signal to the input terminal (2) is A speaker or the like (not shown) is connected to the output terminal (3). (4)
Is a signal processing device that performs error correction of digital signals,
(5) is an RF amplifier for signal modulation, and (6) is a D / A converter. Further, (7) designates a recording / reproducing drum head (8) and a drive motor (9) such as a capstan, which are controlled by a servo L.
It is a microcomputer controlled through the SI (10), and recording and reproduction of various information on the magnetic tape (11) is controlled by this microcomputer (7). FIG. 3 schematically shows a signal recorded on the magnetic tape (11). (12) is an audio signal part, (13) is a start ID part, and (14) is a music number information part.

The microcomputer (7) is equipped with a function for realizing the present invention, and this function will be described with reference to a flowchart. That is, when a plurality of songs are recorded on the magnetic tape (11) and then the fast forward, play or rewind key of the tape is pressed, whichever key is pressed, the music number information according to the present invention is an integer. The function to detect whether or not they are in line operates. First, it is determined whether the running direction of the tape is the forward direction (fast forward or replay) or the backward direction (rewind) (S-1), and if it is the forward direction, steps 2 to 6 described in detail later are executed. However, in the case of the backward direction, the steps 7 to 12 are similarly executed.

First, the former process will be described. In step 2 (S-2), the music number information (program number) currently detected is set to "X", and the music number information detected immediately before is set. Is set to "Y", and then "X" and "Y + 1" are compared (S-3). If X = Y + 1, the process proceeds to the next step. If X = Y + 1 is not satisfied, an abnormal message is displayed. (S-6). If X = Y + 1 is satisfied, it is determined in step 4 (S-4) whether or not "X = AA". If Yes, an abnormal message is displayed (S-
6) If No, then it is judged whether it is the tape end (S-
5) If it is not the end of the tape, return to step 2 again,
If it is the end of the tape, it ends. As described above, “X = AA” means that the “X” is not automatically assigned music number information.

Next, the latter process will be described. In step 7 (S-7), the current song number information is set to "X" and the previous song number information is set in the same manner as in step 2. Then, "Y" is set, and then "X" and "Y-1" are compared (S-8). If X = Y-1, proceed to the subsequent steps, and if X = Y-1 is not established, it is abnormal. Is displayed. (S-12). If X = Y-1 is satisfied, it is determined in step 9 (S-9) whether or not "X = AA". If Yes, an abnormal message is displayed (S-1).
2) If No, then it is judged whether it is the tape end (S-
10) If it is not the tape end, the process returns to step 7 again, and if it is the tape end, then step 11 is executed.

At step 11 (S-11), it is judged whether or not the last music piece number information (program number) "X" is "1". If X = 1, the process is ended, but if X = 1 is not satisfied ( That is, the last program number is "1"
After all, since the assigned program numbers are not in the normal sequence of integers (1, 2, 3, ...) After all, an abnormal message is also displayed (S-1).
2). As shown in FIG. 4, the means for displaying the abnormality message in this embodiment is a thin film (15) printed with the words "Please renumber" attached to the panel surface of the DAT body. Film (1
5) is illuminated by the LED (16) provided on the back surface so that the user can be informed accordingly.
Of course, this display means may use an LCD or the like. Further, in the flow of the above embodiment, steps 3 and 8 correspond to the first judging means, and steps 4 and 9 correspond to the second judging means.

Further, the present invention can be applied to the recently developed so-called DCC. That is, DCC
The format on the recording tape (17) is 9 tracks on one side as shown in FIG. 5, but the music number information written on any one of these tracks (T) or on several tracks, Check according to the flow above.

[0013]

As described above, in the digital recording / reproducing apparatus of the present invention, the track number information recorded in order is normally recorded as the recording medium runs regardless of whether the recording medium is fed forward or rewound. Check whether it is in ascending or descending order of integers automatically without any special operation such as cueing. If it is not normal, an error message is displayed. Can appropriately correct the defect by using a known renumbering function.

[Brief description of drawings]

FIG. 1 is a flowchart showing a function of checking music piece number information of a digital recording / reproducing apparatus according to the present invention.

FIG. 2 is a functional block diagram of the same.

FIG. 3 is a schematic diagram showing a recording format on a magnetic tape in DAT.

FIG. 4 is a schematic diagram showing an example of display means.

FIG. 5 is a schematic diagram showing a recording format on a magnetic tape in a digital compact cassette.

[Simple explanation of symbols]

 (1) DAT (7) Microcomputer (11) Magnetic tape (recording medium) (12) Audio signal part (14) Music number information part (15) Film (16) LED

Claims (2)

[Claims] 1. In a digital recording / reproducing apparatus having a function of detecting the music number information attached to each of a plurality of music recorded on a recording medium while the recording medium is running, the music number information sequentially detected is A digital recording / reproducing apparatus, comprising: a determination unit that determines whether an integer is in ascending or descending order and a display unit that issues a warning based on the determination made by the determination unit. 2. The digital recording / reproducing apparatus according to claim 1, further comprising second determining means for displaying a warning on the display means when each piece of music number information detected sequentially is not an integer. A digital recording / playback device.