JPS61190771A - Tape recorder device - Google Patents

Abstract

PURPOSE:To correctly rewrite the address information, etc. when additionally recording them to the recorded tape, by installing a flag for renumber in a subcode signal. CONSTITUTION:In shifting a tape 1 in the arrowhead direction, the main signals of voice signals, etc. input into a modulator 6 are recorded to the tape 1 through the modulator 6, main recording amplifier 4a and a main recording head 2a. At the same time, the address information is outputted from a microcomputer 8, and recorded to the tape 1 through a subcode modulator demodulator, an auxiliary recording amplifier 4b and an auxiliary recording head 2b. After ending the recording, when pressing a renumber key 10, the tape 1 is taken up once again, and returns to the first position. Traveling the tape 1 and reproducing a main signal, the re-recording of a subcode section is performed. At this time, a flag for renumber is recorded, and a subcodes signal of the address information, etc. can be correctly rewritten by employing the flag.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a tape recorder device that records audio signals and video signals in the form of digital signals, and in particular, the present invention relates to a tape recorder device that records audio signals and video signals in the form of digital signals. It is about what is recorded.

[Conventional technology]

Conventionally, there are tape recorder devices that record subcode signals such as address information in addition to the original signal to be recorded.
Based on this subcode signal, it is possible to locate any position of the audio signal or video signal recorded on the tape at high speed (hereinafter referred to as cueing).

[Problem that the invention seeks to solve]

This type of tape recorder device, for example, like a compact disc, has the track number and hour of the song known in advance, and when recording this on tape or playing back something that has been recorded in the same way, Not a problem, but
When additionally recording other audio information on a recorded tape, discrepancies may occur between the address information included in the subcode signal of the previously recorded part and the address information of the additionally recorded part. , there will be places where the address information is lengthened, places where it overlaps, places where it is completely different, etc., and the address information will be incomplete, resulting in a search error when cuing up an arbitrary position. or it may become impossible to cue again. Further, there are problems in that the remaining amount of tape becomes unclear, and in the case of a display device that displays a time code or the like, the display becomes unnatural.

The present invention was made in order to eliminate the drawbacks of the conventional ones as described above, and it is an object of the present invention to provide a tape recorder device that can accurately rewrite address information, etc. when additional recording is performed on an already recorded tape. The purpose is

Means for Solving Problem c] The tape recorder device according to the present invention includes the track number and time information in the data portion for recording arbitrary data such as the track number 1 hour of the frame in which the subcode signal is recorded. # A flag for renumbering indicating whether or not renumbering has been performed is recorded.

[Effect]

In this invention, since the renumbering flag is provided in the subcode signal, it becomes clear where the subcode signal should be renumbered.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows a tape recorder device according to an embodiment of the present invention. are a main recording amplifier and a main reproduction amplifier; 6 and 7 are modulators and demodulators for modulating and demodulating the main signal; 2b and 3b are a sub-recording head and a sub-playback head for recording and reproducing sub-code signals; 4b and 5b are sub-recording amplifiers and sub-reproduction amplifiers, 9 is a sub-code modulator/demodulator for modulating and demodulating sub-code signals, 8 is a microcomputer, and 10 is a renumber key operated when it is desired to renumber the sub-code signals.

Next, regarding the operation, in the apparatus shown in Fig. 1, the magnetic tape 1
An example will be explained in which an audio signal or the like is recorded while running in the direction of the arrow. A main signal such as an audio signal input to the modulator 6 is digitally modulated by the modulator 6, and recorded on the magnetic tape 1 by the main recording head 2a driven by the main recording amplifier 4a. At the same time, address information such as a time code is output from the microcomputer 8, digitally modulated by the subcode modulator 9, and recorded on the magnetic tape 1 by the sub recording head 2b driven by the sub recording amplifier 4b.
recorded in

For example, when recording a music signal, if one song (information unit) ends and the time comes between songs, the song number (information unit number) in the subcode signal will be updated, and one song in the time code will be updated. The internal elapsed time is reset and the elapsed absolute time continues to be recorded.

FIG. 2 shows the signals recorded on tape 1.

In FIG. 2, 11 is a recording portion of the main signal, 12 is a recording portion of a subcode signal, M is a music signal, and P is a song interval. 13 is one frame of the subcode section 12 shown in enlarged form, in which A is a synchronization signal indicating the beginning position of the frame, and B is a song number (information unit number).
, C, and D are absolute time elapsed from the start of tape recording and elapsed time within the song (time code), E is a flag for renumbering, and F is error detection for detecting errors in information other than synchronization signal A. Indicates the sign. Although not shown, the data portion of the frame includes a TOC (Table of Contents) that indicates the track number and time length of each track recorded on the tape.
tent ) signal is recorded as index information.

For next reproduction, the signal of the main signal section 11 is reproduced by the main reproduction head 3a, amplified and equalized by the main reproduction amplifier 5a, and then digitally demodulated by the demodulator 7.

On the other hand, the sub-code section 12 is reproduced by the sub-reproducing RAD 3b, and after being amplified and equalized by the sub-reproducing amplifier 5b,
The subcode modulator 9 digitally demodulates the signal and sends it to the microcomputer 8. The microcomputer 8 sends time codes and the like to a display (not shown) for display. Note that the renumber key 10 is used when recording on the tape is completed and the subcode signal is rewritten.

Next, a case will be described in which additional recording is performed on an already recorded tape using this apparatus. When additional recording is performed on an already recorded tape, the state of the tape is as shown in Fig. 3 (8): when the additionally recorded part X does not overlap with the previously recorded part Y, and when the additionally recorded part As shown, there are two types of overlap: In both cases, the address information such as the track number and time code included in the subcode will be discontinuous between the previously recorded portion Y and the newly additionally recorded portion Problems arise in that it is not possible to cue, or that when the time code is displayed on the display, the display becomes unnatural. Note that in FIG. 3, 14 indicates a non-recording area.

However, in the device of this embodiment, the renumber key l is pressed after recording is completed.
When O is pressed, the subcode is automatically re-recorded under the control of the microcomputer 8, so these problems can be avoided.

The operation when re-recording the subcode signal will be explained using the flowchart shown in FIG.

After the additional recording is completed, press the renumber key 10 (step 3).
0) Tape l is rewound once (step 31) and returns to the beginning position.9 Next, tape 1 is set to normal running mode, subcode section 12 is set to recording state, main signal section 11 is set to playback state, and main signal section 11 is set to recording state. The subcode section 12 is rerecorded while reproducing the recorded main signal (step 32).

At this time, when a non-recording area 14 such as a no-signal part or a part between songs comes to the main signal part 11 (step 33), or by receiving a music switching signal from an external key (not shown), the music in the subcode part 12 is While updating the number and resetting the elapsed time within the song (step 34), the subcode signal is re-recorded until the tape ends (step 3).
5). At this time, the renumber flag is recorded as, for example, "01", indicating that the song number and time code are consecutive. During playback, accurate cueing can be performed by determining the state of this renumbering flag.

Note that "00" is recorded as the renumbering flag when only additional recording is performed, and "01" is recorded when only the track number and absolute elapsed time in the subcode signal are correctly managed by renumbering. ′
10" is recorded when the song number, absolute elapsed time, and TOC signal up to that song are correctly managed.Furthermore, "11" is recorded on a recorded music tape (soft tape), etc. This is a case where the track number, time code, and index information are recorded continuously.

If the renumbering flag is "10", each song number and time length of each song up to that song are recorded as a TOC signal, for example, the T of the first song.

The C signal records only the number of the first song and its time length, and the TOC signal of the third song records the number and time length of each song up to the third song.

If the renumbering flag is 11", the song numbers of all songs recorded on the tape and the time length of each song are recorded as a TOC signal, so that the microcomputer can play the third song while playing the first song, for example. You can know the duration of the 4th song, etc.

In the above embodiment, when renumbering, the tape is rewound to the beginning and renumbering is performed in the playback state. However, it is also possible to rewind the tape to the beginning, fast forward to a point that is not renumbered, and then start renumbering from there. Alternatively, if renumbering has been completed up to the position where the renumber key was pressed, the renumber operation may be performed from the position where the renumber key was pressed.

Furthermore, although the above embodiment has been explained using a fixed head type tape recorder as an example, it is also possible to use a rotary head type tape recorder in which the area on the tape is divided into a main signal and a subcode signal and recorded. , it goes without saying that the same effect can be achieved by rewriting only the subcode area.

Further, in the above embodiment, only the song number and the elapsed time within the song are rewritten, but the TOC signal may also be rewritten.

Furthermore, in the above embodiment, since the no-signal interval between two songs is automatically found and the subcode information is renumbered, the time interval between the intervals can be arbitrary depending on the system, and the no-signal interval lasts, for example, 30 seconds or more. If so, it may be determined that the main signal is not present and the tape is stopped.

〔Effect of the invention〕

This has the effect of providing a tape recorder device that can accurately rewrite signals and can accurately and reliably cue any position.

[Brief explanation of drawings]

FIG. 1 is a block diagram of a tape recorder device according to an embodiment of the present invention, FIG. 2 is a diagram showing signals recorded on a tape, and FIG. 3 is a diagram showing signals recorded on a tape. 4 is a flowchart showing the operation when rewriting the subcode portion of the tape. In the figure, 1 is the tape, 2a is the main recording head, and 2b is the sub-recording head. Recording head, 3a is a main playback head, 3b is a sub-playback head, 6 is a modulator, 7 is a demodulator, 8 is a microcomputer, 9 is a subcode modulator/demodulator, 1O is a renumber key, 1
1 is the main signal section, 12 is the subcode signal section, 13 is the frame, B is the song number (information unit number), C and D are the elapsed absolute time and the elapsed time within one song (time code signal), E is the renumber flag It is.

Claims (2)

[Claims] (1) A tape recorder device capable of recording a main signal in the form of a digital signal and also recording a subcode signal, comprising a head for recording and reproducing the main signal and the subcode signal, and a head for recording and reproducing the main signal and the subcode signal; In a tape recorder device equipped with a signal and a modulator/demodulator that modulates and demodulates the subcode signal, in the data portion of the frame in which the subcode signal is recorded,
an information unit number indicating the serial number of each unit of information recorded as the main signal; a time code indicating the elapsed time of the tape; and a renumbering code indicating whether the information unit number and time code have been renumbered. What is claimed is: 1. A tape recorder apparatus comprising: a flag; and a subcode signal is rewritten using the renumbering flag during renumbering after additional recording of a main signal. (2) Index information regarding each information unit is recorded in the data portion, the renumber flag is composed of 2 bits, and “00” indicates that the subcode signal is discontinuous with respect to the main signal; “01” indicates that only the information unit number and time code are recorded continuously, and “10” indicates the information unit number, time code information, and index information up to the information unit in the subcode signal. The number “11” indicates that the information unit number, the time code, and the index information are recorded continuously. The tape recorder device according to item 1.