JPH1027462A - Optical disk device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To insert-edit only voices or videos by controlling the switching of a switch to combine information reproduced from a memory with information reproduced from an optical disk. SOLUTION: After continuous elements A and B are edited, only the video of an element C is inserted. Parts of voices A and B corresponding to a portion for inserting the video C are recorded in an audio memory 60. Then, for insert- editing, the elements are reproduced by two heads 10 and 10 continuously in the sequence of A, B and C. During the reproduction of these elements, a video signal switch 30, a first audio switch 30 and a first audio signal switch 40 switch the outputs of sequential signal processing sections 20 and 20 as in the normal case. However, a second audio switch 70 selects the output of a second audio signal switch 70 for a period from a set IN point to a set OUT point. Thus, the element C is outputted for videos and the elements A and B are outputted for voices.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical disk drive, and more particularly to an optical disk drive suitable for use in editing.

[0002]

2. Description of the Related Art Conventionally, as this type of optical disk device,
Japanese Patent Application Laid-Open No. 5-314492 is known. In the publication, after-recording or pre-recording of only audio or video necessary for program editing is enabled by separating an audio signal and a video signal.

In the optical disk device disclosed in Japanese Patent Laid-Open No. Hei 5-144183, by writing information of an odd field or an even field into a sector,
The odd field and the even field are prevented from overlapping at the joint of editing so that the image quality does not deteriorate.

[0004]

The above-mentioned conventional optical disk device has the following problems. In the former case, since the format of the signal to be recorded is changed, it cannot be said to be versatile after-recording or pre-recording.

[0005] In the latter case, the image quality is basically prevented from deteriorating, and after-recording of only audio or only video cannot be executed. The present invention has been made in view of the above problems, and has as its object to provide an optical disc device capable of performing insert editing of only audio or only video.

[0006]

In order to achieve the above object, the invention according to claim 1 comprises an optical disk reproducing means for sequentially reproducing information recorded on an optical disk, and an optical disk reproducing means for recording information on the optical disk in a predetermined order. Temporary storage means capable of temporarily storing information stored therein, switching means for selecting and outputting the reproduction information from the optical disk and the reproduction information from the temporary storage means, and reproducing the information from the temporary storage means. Switching control means for reproducing information from the optical disk one after another in order and controlling the switching means to switch and output the information reproduced from the optical disk and the information reproduced from the memory in combination.

[0007] The information recorded on the optical disk can be temporarily stored in a predetermined order by the temporary storage means, and the switching means can select and output the reproduction information from the optical disk and the reproduction information from the temporary storage means. It is. Therefore, the information is reproduced from the temporary storage means, the information is reproduced from the optical disc one after another in a predetermined order, and the information is reproduced from the memory by the switching control means by controlling the switching means. Information can be output in combination.

[0008] The invention according to claim 2 is based on claim 1.
Wherein the temporary storage means stores audio information. Further, according to a third aspect of the present invention, in the optical disk device according to the first or second aspect, the optical disk device is provided with two reproducing heads, and switches and reproduces one after another. For example, in order to seamlessly reproduce information recorded on an optical disc, at least two reproducing heads are required.
Then, the recorded information is reproduced by one reproduction head, and the other reproduction head is moved to a track on which the next reproduction information is recorded, and waits. In this case, since the switching is performed for each head, the video signal and the audio signal are limited to those recorded at one place. However, according to such switching, separately recorded video and audio cannot be combined, or the number of reproducing heads cannot be increased.

However, by storing the audio information in the temporary storage means in advance and outputting the stored audio information and the video information reproduced from the optical disk, the combination can be output. Further, the invention according to claim 4 is a playback mechanism for sequentially accessing the predetermined track by the two playback heads and continuously playing back the signal, and switching the video signal from each playback head one after another to continuously output the video signal. Video signal switching means for outputting, first audio signal switching means for sequentially switching audio signals from the respective reproducing heads and continuously outputting audio signals, and audio signals output from the first audio signal switching means. Audio memory for inputting and temporarily storing, second audio signal switching means for switching between the audio signal output from the first audio signal switching means and the audio signal output from the audio memory, and storage in the audio memory Controlling the video signal switching means, the first audio signal switching means, and the second audio signal switching means to combine the video signal and the audio signal on the optical disk. Was there a structure and a control unit that allowed to output.

According to the invention having such a configuration, first,
The two reproducing heads successively access the predetermined track by the reproducing mechanism to continuously reproduce the signal, and the first audio signal switching means switches the audio signal from each reproducing head one after another, thereby continuously outputting the audio signal. Output. Then, the audio signal output from the first audio signal switching means is input to an audio memory and temporarily stored. Then, again
The playback mechanism allows the two playback heads to sequentially access a predetermined track to continuously play back signals, and the video signal switching means switches the video signals from each playback head one after another to continuously output video signals. Let me
The audio signal from each reproducing head is sequentially switched by the first audio signal switching means, so that the audio signal is continuously output. By switching the audio signal output from the first audio signal switching means and the audio signal output from the audio memory by the second audio signal switching means at the time of this reproduction, the video signal and the audio signal on the optical disc are combined. Can output. The above control is performed by the control means.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic block diagram showing an optical disk device according to an embodiment of the present invention. In FIG. 1, two heads 10 and 10 can access a predetermined track of an optical disk via a drive mechanism (not shown), and can read information recorded on the optical disk. Each of the heads 10, 10 is connected to a signal processing unit 20, 20, which processes a reproduction signal picked up from each of the heads 10, 10 and outputs a video signal and an audio signal.

In the present embodiment, as shown in FIG. 2, one set of video and audio is recorded in one track by dividing the area, and each head 10 has one track when the optical disk rotates. Play the video and audio in the inside. Therefore, when one track is reproduced, the next track is reproduced, and in order to continue reproduction without interruption, before one head 10 finishes reproducing a certain track, the other reproduction track is used for the other head. 10 must be waiting. This is repeated alternately to continuously reproduce.

Of course, in order to output the reproduced signal to the outside, it is necessary to alternately select and output the signal. The video signal and the audio signal output from the respective signal processing units 20 and 20 are switched. Video signal switch 3 for output
0 and a first audio signal switch 40. Also,
The control unit 50 controls access to the heads 10 and the video signal switch 30 and the first audio signal switch 40. In the present embodiment, these constitute an optical disk reproducing unit. In the present embodiment, two heads 10 are used, but a larger number of heads 10 may be used. However, using two heads for continuous reproduction without breaks saves resources and enables efficient operation.
When the two heads 10 and 10 are used as described above, if there is a material A and a material B, each of which is composed of a set of video and audio recorded on each track, these are continuously reproduced. As shown in FIG. 3, video A → video B audio A → audio B is established. However, it is assumed that a video C is to be inserted between the video A and the video B by after recording. Since the video C is also recorded on another track together with the audio C, the two heads 10 and 1
When the reproduction is continuously performed at 0, the video and the audio are switched as a set, and the audio C naturally interrupts as shown in FIG.

On the other hand, in the present embodiment, an audio memory 60 connected to the output of the first audio signal switch 40 is provided, and the audio output from the audio memory 60 and the first audio signal A second audio signal switch 70 for switching between audio output from the switch 40 and
As will be described later, after-recording of only audio or only video is possible. Here, the audio memory 60 constitutes temporary storage means, the second audio signal switch 70 constitutes switching means, and the control unit 50 for controlling these constitutes switching control means. Generally, the video information requires an absolutely larger capacity than the audio information, so the audio information is temporarily stored in the audio memory 60. However, if the storage capacity is sufficient, the video information is temporarily stored. You may do it. Further, the switching is not limited to the absolute alternative, and the mixing may be performed by changing the ratio.

Next, the operation of the present embodiment having the above configuration will be described. After editing the continuous material A and material B, if only the video of material C is to be inserted,
First, the IN point and the OUT point of the image C are determined. Then, a part of the sound A and a part of the sound B are recorded in the sound memory 60 corresponding to the part where the image C is inserted. This recording is performed by inputting the audio output from the first audio signal switch 40 to the audio memory 60 while continuously reproducing the material A and the material B.

Next, for insert editing, the two heads 10 and 10 successively reproduce material A → material C → material B in this order. At the time of such reproduction, the video signal switch 30 and the first audio signal switch 40 are connected to the sequential signal processor 2 as usual.
The outputs 0 and 20 are switched. However, the second audio signal switch 70 selects the output of the second audio signal switch 70 instead of the first audio signal switch 40 from the set IN point to the OUT point. Therefore, as shown in FIG. 5, the output video signal and the audio signal output the material C for the video while the material A and the material B are output for the audio, and the insert editing of only the video is realized. .

In this way, it becomes possible to perform insert editing of a video only, which has not been possible in the past (edit of a type of adding a new material C after cutting and editing a material A and a material B). Was. On the other hand, on the other hand, after-recording of only audio is also possible. For example,
Conversely to the above, it is assumed that the sound C is inserted and edited between the sound A and the sound B. In this case, first, the two heads 10 and 10 successively reproduce the material A, the material C, and the material B in this order, and store the sound output from the first sound signal switch 40 in the sound memory 60 at this time. And then,
The material A is continuously reproduced in the order of material B, but the audio output from the second audio signal switch 70 is selected for the audio, while the video is not changed. Then, the material C is inserted and edited only for the audio.
As a result, similar insert editing can be realized without storing a large amount of video.

As described above, the material A is stored in the audio memory 60 in advance.
The sound A and the sound B of the sound C and the sound B are recorded, and the sound C is output in parallel with the sound C when the sound C is reproduced. By outputting the audio output of the audio memory 60, the insert editing of only the video can be performed. The material A, the material C, and the material B can be reproduced in advance, and the sound A, the sound B, and the sound C can be reproduced. If the audio output from the audio memory 60 is selected when the material A and the material B are reproduced in addition to the recording in the memory 60, the insert editing of only the audio can be performed.

[0019]

As described above, according to the present invention, it is possible to provide an optical disk apparatus capable of overwriting only video or audio without changing the format. According to the second aspect of the present invention, since the audio information is stored in the temporary storage memory, the storage area can be reduced as compared with the video. Furthermore, according to the third aspect of the present invention, since only two minimum reproducing heads are used, the configuration can be simplified.

Further, according to the invention of claim 4,
The switching part can be realized with a small resource of three.

[Brief description of the drawings]

FIG. 1 is a schematic block diagram of an optical disk device according to an embodiment of the present invention.

FIG. 2 is a diagram showing an information recording position in a track in the optical disc device.

FIG. 3 is a diagram showing an output video, audio, and a video to be edited.

FIG. 4 is a diagram showing video and audio output when edited by a conventional method.

FIG. 5 is a diagram showing video and audio output by insert editing of video only.

FIG. 6 is a diagram showing video and audio output by insert editing of only audio.

[Explanation of symbols]

 Reference Signs List 10 head 20 signal processing unit 30 video signal switching unit 40 first audio signal switching unit 50 control unit 60 audio memory 70 second audio signal switching unit

Claims (4)

[Claims] An optical disk reproducing means for sequentially reproducing information recorded on the optical disk; a temporary storage means for temporarily storing information recorded on the optical disk in a predetermined order; A switching means for selecting and outputting the reproduction information from the temporary storage means; and reproducing the information from the temporary storage means and reproducing the information from the optical disk one after another in a predetermined order, and switching control of the switching means. An optical disk device, comprising: switching control means for combining and reproducing information reproduced from an optical disk with information reproduced from a memory. 2. The optical disk device according to claim 1, wherein said temporary storage means stores audio information. 3. The optical disk device according to claim 1, further comprising two reproduction heads, wherein the reproduction is performed by switching one after another. 4. A reproducing mechanism for successively reproducing a signal by causing two reproducing heads to sequentially access a predetermined track, and a video signal switching for continuously switching a video signal from each reproducing head to continuously output a video signal. Means, first audio signal switching means for successively outputting audio signals by sequentially switching audio signals from each reproducing head, and inputting and temporarily storing the audio signals output from the first audio signal switching means. An audio memory to be switched on; a second audio signal switching means for switching between an audio signal output from the first audio signal switching means and an audio signal output from the audio memory; storage and reproduction in the audio memory and the video A control means for controlling the signal switching means, the first audio signal switching means and the second audio signal switching means to output a combined video signal and audio signal on the optical disc; Optical disk apparatus characterized by comprising a means.