JPH02165486A - Recording device - Google Patents

Abstract

PURPOSE:To easily attain alteration work and correction work by setting a block is the object of editing and the idle block of a recording medium to be recordable blocks and erasing tracks which is unnecessary. CONSTITUTION:In an editing mode, a system first comes to a reproducing mode, and it is judged whether the video signal of the track which is reproduced at present has a corresponding sound track or not on condition that a case when the idle track is reproduced and the sound track corresponds to the idle tack, is included. When a stop switch is depressed, it is judged whether sound to be edited corresponds to the final video of a sequence of not, and a sound signal is recorded for one track by any sector type. When the sound track corresponding to a video track which is being reproduced still remains, remaining tracks are all erased. Thus, operability can be improved in the case when an additional signal is recorded for the video track and when it is corrected.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a recording device for a recording medium capable of recording an image and additional information of the image signal.

[Prior Art] An example of a recording medium capable of recording additional information such as audio in association with an image is the audio recording of a still video floppy (hereinafter simply referred to as floppy) by the Electronic Still Video Conference. There is a format. This records the video signal on one annular track per field, uses two tracks for one frame of video signal, and compresses the time axis of the audio signal using digital processing technology. The frequency band is raised to the band of the video signal and recorded using the same recording processing system as the video signal. In the case of audio signals, one track consists of four sectors #0 to #3.
There are two types. That is, type 1 means to continue with the next sector of the same track, type 2 means to finish recording on that track and continue on the first sector #0 of the next succeeding track in the sequence, and type 3 means to continue with the first sector #0 of the next succeeding track in the sequence. means the end of the sequence, and type 4 means unused or remaining sectors of types 1, 2, and 3 of the track. 6th
As shown in the figure, in each sector, a start flag is placed before the time-domain compressed audio signal, and an end flag is placed after it, and the above type is identified by the combination of the start flag and end flag. do.

A sequence of audio signals begins with a type 1 sector and ends with a type 3 sector. FIG. 5 shows the type of each sector when one audio sequence is recorded on four tracks.

Table 1 Each sector also contains control codes for controlling the sequence of audio signals, the contents of which are shown in Table 1. This control code allows a sequence of audio signals to be played as a continuous sound. Further, one still image can be assigned to one track, and audio can be played back while playing the still image.

[Problem to be solved by the invention] If you want to add an audio explanation to a single still image using such an audio format, you can either record the video and audio at the same time, or record the audio after recording the video. It's up to you to record it. However, no matter which method is used, if recording fails, for example if the original is misread, or if the explanation is too long compared to the recordable time, it is necessary to change part of the recording. In such cases, for example, as with the still/video/floppy audio format mentioned above, it does not matter if the same image is associated multiple times within one sequence, or the same image may be associated with multiple sequences. If so, specify the part you want to change and delete/delete it.
In order to record, it was necessary to clearly understand the correspondence between images and sounds.

Therefore, it is an object of the present invention to provide a recording device that can easily perform such changes and corrections.

[Means for Solving the Problems] A recording device according to the present invention is a recording device for a recording medium capable of freely recording an image and additional information of the image in association with each other, and is a recording device for recording a recording medium that records a series of additional information signals. When editing signals of a plurality of blocks, the block to be edited and an empty block on a recording medium are set as recordable blocks, and signals of unnecessary blocks remaining after editing are erased.

[Operation] With the above means, it is possible to re-record audio whose length does not fit the number of audio tracks to be edited. Furthermore, by erasing tracks that are no longer needed, the recording medium can be used effectively.

[Example] Hereinafter, the present invention will be described in detail with reference to the drawings. In addition,
Although the case of a still video floppy is taken as an example, the present invention is not limited thereto. For example, a solid-state memory is used, and image data or additional information corresponding to the image data is recorded for each storage block. It can also be applied when carrying out.

FIG. 1A shows a block diagram of the configuration of an audio signal recording and erasing system in a still video recording and reproducing apparatus.
Figure B shows a block diagram of the configuration of the audio and video reproduction system.

In FIG. 1A, an analog audio signal at an input terminal 10 is input to a time compressor 12, and the time compressor 12 compresses the audio input at a specified time axis compression rate (to a video band) under the control of an audio control circuit 14. (conversion), and the adder 16 adds the start flag, control code, and end flag from the audio control circuit 14. The output of adder 16 is F
The signal is FM modulated by the M modulation circuit 18 and recorded on a magnetic disk 26, which is a still video floppy, via a switch 20, a recording amplifier 22, and a magnetic head 24.

The switch 20 is connected to the a contact point during recording, and connected to the b contact point during recording erasing. 28 is an erase signal generation circuit that generates a recording erase signal. 30 is a head drive circuit that moves the magnetic head 24 in the radial direction of the magnetic disk 26;
32 is a disk motor, 34 is a motor drive circuit that drives the motor 32, 36 is a system control circuit that centrally controls each part of the illustrated circuit, 38 is a switch device consisting of various switches, and 40 is a display device.

In FIG. 1B, the signal reproduced by the magnetic head 24 from the magnetic disk 26 is transmitted to the FMfJ via the reproduction amplifier 42.
applied to the L2 circuit 44. The signal demodulated by the FM demodulation circuit 44 is sent to the video processing circuit 46 and the time expansion circuit 4.
8. The video processing circuit 46 reproduces the signal from the video track and outputs a still image video signal to the output terminal 50, and the time expansion circuit 48 expands the signal from the audio track on the time axis and restores the signal to the output terminal. A reproduced audio signal is output to 52. 54 is an audio control circuit that controls the time expansion circuit 52. Note that other circuit elements common to those in FIG. 1A are given the same reference numerals.

The operation of this embodiment will be explained with reference to FIGS. 2, 3, and 4. In edit mode, first enter play mode (
SL), the video is played back and the operation of the recording mode switch is waited for (S2, 3). Using the recording mode switch, it is determined whether the video signal of the track currently being reproduced has a corresponding audio track (a track on which an audio signal is recorded) (S4).

However, this includes the case where an empty track is played and an audio track corresponds to this empty track. If there is a corresponding audio track, the mode is set to editing (S5), and a message to that effect is displayed (S6). Then, the stop switch or recording mode switch (S7), ) rack feed command (S9)
Alternatively, it waits for an instruction from the start switch (S12).

Stop switch or recording mode switch (S7)
to cancel the editing mode and enter the playback mode (S8)
, return to S3. If there is a track advance command (S9), the track is advanced (SIO), the track is reproduced, and the process returns to S4 (Sll). In the case of an empty track or an audio track, the Sll may mute the video output and display that the track is an audio track or an empty track. S7,9 until the start switch is pressed
is cycled through, and when the start switch is pressed, 531 (
Proceed to Figure 3).

In this way, if the playback track has a corresponding audio track, the editing mode is entered to rewrite the corresponding audio track, so there is no need to register a new audio sequence for one video track. , multiple audio sequences no longer correspond to one video track.

Next, the recording mode after S13 will be explained. If the playback track has a corresponding audio track (S4), the recording mode is entered (S13), and an LED or CRT display device indicates this (514), the stop switch or the recording mode switch (S15), the track Send command (
S19) or the start switch (S22).

Stop switch or recording mode switch (S15
) is pressed, if it is pressed while not in a pause state during recording, it enters playback mode (316, 8), and if it is in a recording pause, the audio track recorded during the recording pause,
Do you want to delete S1? ), rewrite only the flag and re-record the same audio signal on that track 318), S
Proceed to step 8. In other words, the sector type of the audio track recorded in the recording pause state will be one of (a) to (d) in Figure 7, but the recording mode cannot be canceled with the stop switch or the recording mode switch. , the sequence ends here, and (e) to (h) in Figure 7
In order to rewrite the flag to one of these types, it must be erased and re-recorded. Of course, there is no need to rewrite if there is no problem with playback.

When there is a track advance command (S19), the track is advanced (S20) and the video of that track is played back (S19).
21).

Steps S15.19 are cycled through until the start switch is pressed, and when the start switch is pressed, the process proceeds to 561 (FIG. 4).

When the start switch is pressed at S12 in FIG.
31 (Figure 3) to enter the edit mode. First, the memory in the time compressor 12 is cleared, and the acquisition of the audio signal into the memory is started (S31). Then, it is determined whether or not the audio track corresponding to the reproduced image to be edited has been erased (532), and if it has not been erased, one audio track is erased (S33). and,
The stop switch (S34), pause switch (S35), or track advance command (S36) is accepted until the audio signal reaches the recording time of one track and is captured in the memory of the time compressor (S37). .

When the audio signal reaches one track, it is transferred to a floppy disk.
The track is recorded (S38). In this case, the recording compression rate and the control codes Wl, W3°W5 are the same as before editing. Also, the sector type is (a) in Figure 7.
). If the total recording time has not been reached (S3
9), Play the video track you want to edit again540)
, return to S31. When the total recording time is reached,
The playback mode is entered (S41) and the process returns to S2 (FIG. 2).

Note that the total recording time refers to the recordable time of audio signals on the floppy disk, including all audio tracks corresponding to the track being played and all empty tracks on the floppy disk.

When the stop switch is pressed in S34, it is determined whether the audio being edited corresponds to the final video of the sequence (551), and if it is the end of the sequence, the seventh
If you want to record one track of the audio signal in any of the sector types shown in Figures (e) to (h) (553), and if it is not the end of the sequence, then use any of the sector types in Figures 7 (a) to (d). The audio signal is recorded on one track (S52). In both cases, the recording compression rate and control code Wl,
13. W5 is the same as before editing. After S52.53,
If there are still audio tracks that correspond to the video track being played, all remaining tracks will be deleted (854.5
5). Then, the process advances to S41 and the playback mode is entered.

When the pause switch is pressed or a track advance command is issued (S35, 36), the recording compression rate and control code 11, 13, etc. are the same as before editing. One track is recorded in W5 (S42). The sector type at this time is one of those shown in FIGS. 7(a) to (d). If the audio track before editing still remains, all the remaining tracks are deleted 544), and if there is a track advance command (S45), the track is advanced and the video of that track is played back (348,
49). If there is no track advance command (S45), it is checked whether the audio track currently being edited corresponds to the last video track of the sequence (846), and if it is the end of the sequence, the next video track of the audio sequence is Move to a corresponding empty track or audio track and play the image (547), and return to S3 (FIG. 2). If it is the last track, the video track after that audio sequence is played back (550) and the process returns to 513 (FIG. 2).

Next, the operations after 361 (FIG. 4) will be explained. Distinguish whether it is single recording (S) or continuous recording (C) (561), display each operation (S63.64), clear the memory of the time compressor, and import the audio signal into the memory. (S64). Until one track is imported,
Stop switch (S65), pause switch (S
66) and track feed command (S67).

When one track is taken in (568), one track is recorded using the sector type shown in FIG. 7(a) (S69). In the case of continuous recording, the original image is played back (571), and the process returns to S62 to continue capturing the audio signal into the time compressor.

In the case of single recording (S70), a message indicating that the single recording mode is being paused is displayed (578), the next image is reproduced (S74), and the process returns to 513 (FIG. 2). That is 522
It remains in a pause state until the start switch is pressed (Fig. 2).

When the pause switch is pressed or a track feed command is issued (S66.67), one track is recorded in any of the sector types shown in FIGS. 7(a) to (d) (S?2). In the case of a track advance command (S73), advance the track and play that track (S75, 76), in the case of single recording, return to 513 (Fig. 2), and in the case of continuous recording, proceed to S62. (S7?). If there is no track advance command (S73), the next image is played back and the process returns to S13 (S74).

In this embodiment, the audio signal is edited when the audio signal corresponds to a video track or an empty track, but it goes without saying that it is also possible to edit only audio that does not correspond to a video or empty track. Further, the additional information added to an image is not limited to an audio signal, but may be, for example, a character signal or a code signal added to the image.

[Effects of the Invention] As can be easily understood from the above explanation, according to the present invention, when an additional signal is once recorded on a video track and then corrected, additional information on the video and even empty blocks are re-recorded. This makes it possible and extremely convenient to use.

[Brief explanation of the drawing]

Figure 1A is a block diagram of the audio recording and erasing system in the still/video recording system, Figure 1B is a block diagram of the video and audio playback system, and Figures 2, 3, and 4 are block diagrams of the audio recording and erasing system. 5 shows an example of a change in the recording type of an audio sequence, FIG. 6 shows an example of an audio track sector format, and FIG. 7 shows an example of an audio track sector type. 10: Audio input terminal 12: Time compressor 24: Magnetic head 26: Magnetic disk 30: Head drive circuit 3
2: Disk motor 50: Video output terminal 52:
Audio output terminal Figure 1B Figure 1A ■ Figure 4 Figure Figure 1 Door drive (a) (b) (c) Figure

Claims (1)

[Claims] A recording device of a recording medium that can freely record an image and additional information of the image in association with each other, and when editing the signal of one or more blocks recording a series of additional information signals, the block to be edited and the recording A recording device characterized in that empty blocks of a medium are used as recordable blocks and signals of unnecessary blocks remaining after editing are erased.