JP3557636B2 - Editing device - Google Patents

Description

[0001]
[Industrial applications]
The present invention relates to an editing apparatus that continuously reproduces a video signal reproduced and edited from a recording medium on which a video signal is recorded.
[0002]
[Prior art]
FIG. 6 is a block diagram of a conventional editing device.
[0003]
2. Description of the Related Art Conventionally, for example, when editing a video such that video scenes (scenes) recorded on a recording medium such as a magnetic tape or a video disk are continuously reproduced in a desired order, first, a desired scene is reproduced by a video signal reproducing device or the like. Each time is reproduced, the video reproduced by another video signal recording device or the like is sequentially recorded (dubbed) on a magnetic tape or the like, the video thus edited is recorded, and the edited video is reproduced to reproduce the video. Was reproduced.
[0004]
As an example, as shown in FIG. 6, a system block for editing the above-described video will be described. First, the editing apparatus includes a video signal reproducing unit 10 for reproducing a desired video scene (scene) from a recording medium (not shown) on which a video signal is recorded, and a video for recording a video signal 10a reproduced by the video signal reproducing unit 10. It comprises a signal recording means 12 and a control means 11 for controlling the reproduction and recording operations of the video signal reproducing means 10 and the video signal recording means 12, respectively.
[0005]
Here, for example, a control signal, a picture signal, or address information such as a time code is recorded on the recording medium as a control signal together with a video signal. By supplying the lever information to the control unit 11 moment by moment, control of the video signal recorded by the video signal recording unit 12 (image search (for example, fast-forwarding of an image) and scene designation (for example, cueing of a scene)) ), And the control means 11 displays the elapsed time of the reproduced video signal. Therefore, the control means 11 sets a position at which reproduction of a scene to be reproduced is started and a position at which reproduction is ended by the above-mentioned address information, and the video signal reproducing means 10 reproduces each scene based on the address information. Control is performed so as to start and end reproduction, and in synchronization with the control, the above-described video signal recording means 12 is controlled to start and stop recording the video signal.
[0006]
For example, when the user operates the operation unit (not shown) to input the address information of the scene to be reproduced and the address information of the end of reproduction to the control means 11 in order to reproduce the scene in a desired order, the information is input to the control unit 11. A control signal 11a based on the address information of the start of reproduction of the corresponding scene is supplied to the video signal reproducing means 10. The video signal reproducing means 10 starts reproducing the video signal based on the control signal 11a. At the same time, the control means 11 supplies the video signal recording means 12 with a control signal 11b based on the start of video recording, and the video signal recording means 12 is supplied from the video signal reproducing means 10 based on the control signal 11b. Start recording the video signal. Here, the video signal reproducing means 10 has, for example, a well-known signal processing means for reproducing and demodulating a video signal modulated and recorded on a recording medium, and the video signal recording means 11 Is recorded on a recording medium such as a magnetic tape.
[0007]
When the control means 11 detects the address information of the reproduction end from the address information from the video signal reproduction means 10 supplied via the transmission line 10b, the control signal 11a for terminating the reproduction of the scene is transmitted. By outputting, the reproduction of the video signal of the video signal reproducing means 10 is stopped, and at the same time, the recording of the video signal recording device 12 is terminated.
[0008]
In this way, a recording medium (for example, a magnetic tape) recording the video of the scene edited (reproduced in a desired order) as described above is created as a duplicate, and the duplicated video signal is reproduced by reproducing the duplicate. I do.
[0009]
Conventionally, there has been proposed a disk reproducing apparatus (Japanese Utility Model Publication No. 5-19916), which relates to a reproducing apparatus for an optical disk or the like, and in particular, can reproduce a signal of the optical disk by continuously connecting randomly selected positions. I was
[0010]
[Problems to be solved by the invention]
However, in the above-described editing apparatus, since a copy must be made in order to reproduce the edited video, there was a disadvantage that separate video signal reproducing means and video signal recording means were required respectively. . In addition, there is a disadvantage that dubbing is performed at the time of making this copy, so that the S / N deterioration of the edited video signal is inevitable. That is, for example, in order to edit and reproduce only a desired portion of a video of a family or a child photographed by a camera-integrated VTR, dubbing to another magnetic tape or the like was required.
[0011]
Furthermore, in the above-described disk reproducing apparatus, a large-capacity buffer memory is required for continuously connecting and reproducing the positions of the optical disk signals selected at random. There was a disadvantage that complicated control was required for reading.
[0012]
On the other hand, when the video signal recording / reproducing device of the above-described camera-integrated VTR is a video signal recording / reproducing device using a magneto-optical recording medium such as a magneto-optical disk instead of a magnetic tape, Since a search operation (so-called random access) of the above-mentioned arbitrary reproduction position can be performed, a scene can be edited and reproduced directly from the magneto-optical recording medium. Therefore, for example, when a scene is edited directly from this magneto-optical storage medium, the scene signal is switched more naturally using a simple memory circuit, so that the video signal concerned is reproduced without interruption, and dubbing is performed without duplication. The S / N deterioration of the video signal caused by the above is improved, and the editing information set once is stored and retained on the magneto-optical recording medium to reproduce and reproduce the editing order as many times as possible. The editing device was waiting.
[0013]
[Means for Solving the Problems]
Therefore, the present invention provides the following configurations in order to solve the above-described problems.
(1) signal processing means for at least reproducing a video signal recorded on a recording medium;
The output signal of the signal processing meansOne field or one frame periodStorage means for storing;
Switching means for switching and outputting an output signal of the signal processing means and an output signal of the storage means;
Control means for controlling the signal processing means, the switching means and the storage means, respectively,
An editing apparatus, characterized in that the video signal recorded on the recording medium is edited and reproduced in a desired order by switching of the switching means based on editing instruction information.
(2) The editing device according to (1),
A storage holding unit that stores and holds editing information for performing control of editing and reproducing the video signal in a desired order;
The recording mediumToEditing information for performing control to edit and reproduce the video signal in a desired order.Recording means for recording and holding;
Further having
According to the editing information stored by the storage unit or recorded on the recording medium by the recording unit, the video signal is controlled to be edited and reproduced in a desired order.An editing device, characterized in that:
[0014]
【Example】
FIG. 1 is a block diagram for explaining an embodiment of the editing apparatus according to the present invention, FIG. 2 is a block diagram for explaining the operation of the control means, FIG. 3 is a flowchart for explaining a search operation, FIG. Is a block diagram for explaining the operation of the signal processing means, and FIG. 5 is a time chart for explaining the operation of the editing apparatus according to the present invention. Hereinafter, embodiments of the present invention will be described with reference to the drawings. The same components as those described above are denoted by the same reference numerals, and description thereof will be omitted.
[0015]
The editing apparatus according to the present invention includes a signal processing unit 2 for reproducing at least a video signal recorded on a recording medium 1, a storage unit 3 for storing an output signal 2a of the signal processing unit 2, A switching unit 4 for switching and outputting the output signal 2a and the output signal 3a of the storage unit 3; and a control unit 5 for controlling the signal processing unit 2, the switching unit 4 and the storage unit 3, respectively. The video signal recorded on the recording medium 1 is edited and reproduced in a desired order by switching of the switching means 4 based on the instruction information 51a. Further, in the editing apparatus described above, the recording medium 1 is configured to store and hold editing information for performing control of editing and reproducing the video signal in a desired order.
[0016]
Now, as shown in FIG. 1, the editing apparatus according to the present invention uses a video recorded on a recording medium 1 (for example, an optical disk) based on an editing instruction described later input to the control means 5 as described later. Scenes can be reproduced and output in a desired order for each scene. Also, at this time, when this video scene is reproduced for each scene, random access is performed to search the recording medium 1, but during this random access, no video signal is reproduced, so that the memory means 3 described later stores the video signal. By outputting the edited video signal, the edited video signal is output without interruption.
[0017]
Further, the editing instruction is recorded and held at a predetermined location on the recording medium 1, so that when the same recording medium is reproduced again, the editing instruction is set once by reading the editing instruction prior to the reproducing operation. Is reproduced, and a video scene recorded based on this is reproduced in a desired order for each scene.
[0018]
The editing apparatus reproduces a signal recorded on the recording medium 1 by a signal processing unit 2 described later, converts the reproduced signal into a video signal and outputs the video signal, and supplies the video signal to the next-stage memory unit 3 and switching unit 4 respectively. I do. The memory means 3 has, for example, a capacity capable of storing a still image (still image signal) of a video signal transmitted in a predetermined field or frame period among video signals transmitted continuously. The image signal is stored, and the stored still image signal is supplied to the switching means 4 according to a control signal from the control means 5 described later. The control means 5 controls the signal processing means 2, the memory means 3 and the switching means 4 by control signals 5a, 5b and 5c based on information signals from an operation unit (not shown), which will be described later. The memory means 3 outputs a still image signal stored based on the control signal 5b to the switching means 4, and the switching means 4 performs the signal processing means based on the control signal 5c. 2 and either the video signal or the still image signal supplied from the memory means 3 is switched to a transmission path (not shown) and output.
[0019]
Next, the operation of the editing apparatus having the above configuration will be described.
[0020]
As shown in FIG. 2, the control means 5 mainly includes a CPU 51, a control CPU 52, and a character generation IC 53. For example, the user inputs to the CPU 51 of the control unit 5 an instruction (edit instruction) to reproduce the video recorded on the recording medium 1 in a desired order by operating the operation unit. Here, the CPU 51 decodes the input editing instruction, and outputs editing information based on the editing instruction to the control CPU 52. The control CPU 52 receives the editing information and performs a video search (random access operation for searching for a specific image), which will be described later, along the flowchart shown in FIG.
The control CPU 52 receives a status signal indicating an internal state (for example, a state in which the signal processing unit 2 is currently performing normal reproduction, etc.) from each unit of the editing device (not shown). A control signal 5a (signal processing control signal) for controlling stop and the like is supplied to the signal processing means 2, and a display signal (LED display signal) for displaying the internal state of each section of the editing device is transmitted through a transmission path (not shown). The data is output to a character generation IC 53 via a transmission line 53a shown in FIG. The character generation IC 53 includes, for example, a picture number (a video signal as a control special signal recorded on the recording medium) in the address information obtained by the separating means (not shown) among the signals reproduced from the recording medium 1. A pulse code recorded on a horizontal scanning line during a vertical blanking period of a signal) is supplied to the character generation IC 53 via the transmission line 2b. Further, a horizontal synchronizing signal and a vertical synchronizing signal obtained from the reproduced video signal are always supplied to the character generation IC 53 via a transmission path (not shown). It generates information (character signal) such as a picture number or an elapsed time and outputs it to a character adder 34 described later via a transmission path (not shown).
Further, the control CPU 52 supplies a control signal (squelch information, not shown) for muting unnecessary video and audio signals to the squelch switch means 33 described later, for example, when the editing apparatus performs a search.
[0021]
The control CPU 52 sets, for example, a picture number (SPN) of a video to start reproduction and a picture number (EPN) of a video to end reproduction by the decoded editing information 51a from the CPU 51. , And outputs a control signal 5a for starting a search for a picture number of a video to be reproduced.
[0022]
When the start of the search is instructed (step S1 shown in FIG. 3), in the next step S2, the picture number (CPN) of the video which changes every moment and is supplied to the character generation IC 53 is decoded, and the SPN of the SPN is decoded. If the SPN is large, for example, if the SPN is large, it is determined that the desired video is recorded after the position where the video signal is currently being reproduced, and pickup is performed until this number is excessively exceeded in step S3 (the photodiode 21 to be described later is configured). (For example, a signal reading device to be read) at a high speed in the forward direction (for example, in the outer circumferential direction of the disc). In step S4, it is assumed that the pickup is moved in the reverse direction (for example, in the inner circumferential direction of the disc) until this number is exceeded. To fast forward at high speed.
[0023]
In step S5, the SPN is compared with the CPN. If the SPN is small, it is determined that the pickup has not yet reached this number, and the operation of step S4 is repeated. If the SPN is large, the SPN as the target number is reversed. In step S6, the pickup is forwarded at a low speed in the forward direction.
[0024]
In step S7, the SPN is compared with the CPN again. If the SPN is large, the operation in step S6 is repeated to approach the SPN. If the SPN is small, the slider servo (servo for driving the entire pickup) operation is performed. Switch and send the pickup at low speed to find the position of SPN.
In step S9, the SPN is compared with the CPN. If the SPN becomes smaller, the SPN is passed from the forward direction and a jump is made in the reverse direction (for example, moving across a signal recording track formed adjacently on the recording medium. ) To find the position of the SPN. If the SPN becomes large, the pickup is sent by the slider servo until the CPN coincides with the SPN. When the CPN matches the SPN in step S12, the search ends in step S13.
[0025]
When the position of the SPN is reached by the above-described search, normal reproduction is performed by the control CPU 52 until the EPN is detected therefrom. When the character generation IC 53 detects that the position of the EPN has been reached, the control CPU 52 terminates the normal reproduction and returns to the search operation in accordance with the order of the editing information input to the CPU 51. An instruction operation for starting a search for the SPN at which the next scene starts is performed. At this time, the control CPU 52 outputs control signals 5b and 5c to the memory means 3 and the switching means 4 described later, respectively, and switches and outputs the video signal stored in the memory means 3 by the switching means 4.
As shown in FIG. 4, for example, the signal processing means 2 reads a modulated and recorded signal obtained by irradiating a laser signal on the unevenness (not shown) formed on the recording medium 1. A diode 21, a preamplifier 22 for amplifying a signal read by the photodiode 21, an RF compensator 23 for raising a high-frequency component of the amplified signal to a predetermined amount, and a predetermined frequency component for a signal output from the RF compensator 23 , A dropout detector 29 for detecting a dropout (partial loss or deterioration of the signal) of the signal output from the FM compensator 23, and a signal separated from the BPF 24. A limiter 25 for removing unnecessary high-frequency components, an FM demodulator 26 for demodulating a signal output from the limiter 25, Based on the detection result of the dropout detector 29, the demodulated video signal output from the FM demodulator 26 and the demodulated video signal one horizontal scanning line output from the 1H delay line 27 are switched and output, and a continuous signal is output. A switch 28 for outputting, a de-emphasis 30 for reducing a noise component of the demodulated video signal, and a wow flutter and a jitter (disc of a disk) of the demodulated video signal output from the de-emphasis 30 based on a pulse from a clock pulse generator (not shown). CCD variable delay line 31 for removing eccentricity or rotation unevenness), chroma phase modulator 32 for removing color disturbance and color unevenness caused by high-speed jitter among jitters removed by CCD variable delay line 31, search as described above. In order to prevent unnecessary video signals from being sent out under the control of the control CPU 52 described above, A squelch switch 33 for muting a video signal based on kerch information, a character adder 34 for displaying a character signal output from the character generation IC 53 on a video screen, and a noise for removing noise distributed in a high frequency component of the video signal It is composed of a reduction 35.
[0026]
Although not described in detail here, it goes without saying that the signal processing means 2 has a signal processing system for audio signals recorded on this recording medium, similarly to the video signal processing system described above.
[0027]
Here, the video signal output from the CCD variable delay line 31 is supplied to a burst gate circuit (not shown), and the burst gate circuit extracts a color burst from the video signal and supplies it to a phase comparator (not shown). I do. Further, the reference subcarrier output from a reference signal generator (not shown) and the color burst from the burst gate circuit are supplied to the phase comparator, respectively, so that the phase shift of the color burst in the reproduced video signal ( Since an error current proportional to the jitter is detected, this is supplied as phase information to the above-mentioned chroma phase modulator 32, and based on this phase information, phase modulation is performed so as to cancel the phase shift, thereby removing the jitter. I do.
Further, a clock pulse is generated based on the error current with respect to the reference subcarrier obtained by the phase comparator, and is supplied to the CCD variable delay line 31 as described above. Controls the clock frequency that determines the delay time.
[0028]
The video signal reproduced and output in this way is supplied to the memory means 3 and the switching means 4 at the next stage as described above.
[0029]
The memory means 3 is a memory circuit capable of storing and holding a video signal for one frame period, and is usually set to a write-on state (signal storage enabled). Then, for example, when the control means 5 detects the EPN, the control means 5 starts a search operation for searching for a reproduction position (SPN) of the next scene. Therefore, the control means 5 controls the control signal for muting the output of the video signal. Is supplied to the squelch switch 33 to set the memory means 3 to the write-off state, and at the same time, supplies a control signal (memory control signal) 5b for outputting the video signal stored by the memory means 3 immediately before. . The control means 5 supplies a control signal 5c (switch control signal) so that the switching means 4 switches and outputs the video signal from the memory means 3.
[0030]
When the control means 5 detects the SPN of the scene to be reproduced next, normal reproduction is performed from this picture number, and the control means 5 issues a control signal for instructing to set the memory means 3 to a write ON state. 5b, and supplies a control signal 5c to the switching means 4 so as to switch and output the video signal from the signal processing means 2.
[0031]
In this way, when searching for the next scene in order to reproduce the scenes in a desired order, the video signals stored immediately before the search are switched and output, so that the video signals can be reproduced without interruption.
[0032]
Here, in the above-mentioned memory means 3 in the writing ON state, for example, writing is performed every predetermined frame period, and the stored contents are constantly updated. Therefore, the memory means 3 at this time stores, for example, the video signal (still image signal) of one frame before in the same manner as the 1H delay line 27 holds the information of the scanning line one horizontal scanning period before. ) Is stored and output as a frame delay line.
[0033]
Next, a specific operation of the editing apparatus of the present invention will be described with reference to FIG. As shown in FIG. 5, it is assumed that the editing operation of the present editing apparatus is started at the editing start position on the time axis. At this time, the control means 5 outputs control signals 5a, 5b, 5c, respectively, and the signal processing means 2, memory means 3, and switching means 4 are respectively controlled based on these.
[0034]
As described above, for example, the control CPU 52 supplies the above-described control signal 5a to the above-described signal processing means 2 based on the editing information set by the user operating an operation unit (not shown) (see FIG. 5A). Then, a search for a scene (scene 1) to be reproduced first is performed. At this point, the memory means 3 is maintained in the video signal writing ON state by the control signal 5b (shown in FIG. 3B). The switching means 4 is kept in a state of outputting the video signal 2a supplied from the signal processing means 2 by the control signal 5c (illustrated in FIG. 3C), but when the search is started. Since the squelch switch 33 mutes the output of the video signal, no video signal is output.
[0035]
When the control CPU 52 detects the SPN of scene 1 by this search, the control signal 5a is switched so that the signal processing means 2 performs normal reproduction (shown in FIG. 7A), and the first scene 1 Playback is performed. At this time, the reproduction time information exhibits a normal time change in accordance with the reproduction (illustrated in FIG. 3D). Further, as described above, the reproduction of this scene is continued until the CPN (current picture number) changing every moment reaches the preset EPN (picture number of reproduction stop) by the control means 5, as described above. Is detected again, the above-described search is started again, and the SPN of the next scene (scene 2) is searched (shown in FIG. 7A). At the same time, the memory means 3 is turned off by the control signal 5b. At this time, the memory means 3 reads out and outputs the video signal stored immediately before (illustrated in FIG. 3B). Further, the switching means 4 switches and outputs the output signal from the memory means 3 according to the control signal 5c (illustrated in FIG. 4D). Thus, the edited scene can be reproduced by repeating the above operation in a desired order.
[0036]
Here, when the reproduction of the scene 2 is started when the switching from the scene 1 to the scene 2 is performed, the switching unit 4 outputs, for example, a video output from the memory unit 3 to the video from the signal processing unit 2. By changing the mixing ratio of the video signal of the scene 2, the two videos are overlapped with each other while being superimposed, and the video is switched more smoothly.
[0037]
As an example of a recording medium, for example, an optical disk or the like has lead-in and lead-out tracks before and after recording a program such as a video signal, and thereby automatically starts or ends reproduction of a reproducing device such as a player. These are read out prior to the operation of reproducing a video signal from this optical disc. Therefore, the above-described editing device records and holds the editing information by operating the above-described operation unit to write the editing information previously input and instructed by the user to a predetermined location of the above-described lead-in track on the recording medium 1. I do. Then, by reading out this editing instruction before the reproducing operation of the present editing apparatus, the video scene can be reproduced for each scene in a desired order many times based on the editing instruction set once.
[0038]
Here, the lead-in track is provided, for example, at the innermost periphery of the disc, because a control signal for automatically starting and ending the reproduction when reproducing the optical disc or the like is recorded. For this reason, the detection position of the lead-in track can be made constant, and information recorded on the lead-in track can be similarly read from a separate disk.
[0039]
For example, when a user edits a recording medium (for example, a disc 1) on which sports such as soccer are recorded, when an editing instruction to reproduce only a scene scored by both opponents in a digest is issued, editing based on this is performed. The information is stored and held on the lead-in track of the disk 1. When a user edits a recording medium (for example, a disk 2) that records scenery of a sightseeing spot in each country of the world, the user issues an editing instruction to perform editing in order of reproduction in a desired country. Is stored on the lead-in track of the disk 2.
In this way, when reproducing either the disc 1 or the disc 2, the editing information written in the above-mentioned lead-in track is read out by the control means 5, and based on this, the control means 5 controls the disc 1 or the disc 2 respectively. Make the corresponding edits and play.
[0040]
Although an optical disk has been described as an example of a recording medium in the above-described embodiment, the present invention is not limited to this, and a magnetic recording medium such as a magnetic tape may be used.
[0041]
Incidentally, by increasing the storage capacity of the memory circuit of the memory means 3, not only a still image but also a moving image may be stored.
[0042]
In the above-described embodiment, the editing information is stored and held in the lead-in track on the recording medium, and is read out at the time of reproduction. However, the editing information may be stored and held in the control unit 5, for example. Of course.
[0043]
The above-mentioned switching means 4 performs a smoother scene switching by performing a screen switching such as a wipe-out for switching to wipe off an image or a white-in for gradually returning to a switched screen from a white-out for gradually whitening the entire screen. At the same time, of course, a visual effect may be obtained.
[0044]
【The invention's effect】
As described above, according to the configuration of the present invention described in claim 1, since the video signal recorded on the recording medium can be directly edited and reproduced by the editing apparatus alone, it is difficult to create a conventional copy. It is possible to omit the individual video signal reproducing means and the video signal recording means necessary for the above, so that the configuration can be simplified, and since it is not necessary to reproduce the duplicate after creating it, the video by dubbing or the like is eliminated. There is an effect that signal S / N degradation does not occur.
[0045]
Further, the editing apparatus can output a video signal without interruption during random access by outputting a video from the frame memory. When outputting an image from this memory, there is an effect that image effects such as overlap, wipe-out or fade-in and out can be exhibited.
[0046]
As described above, according to the configuration of the present invention as set forth in claim 2, in addition to the above-described effects, once-set editing information can be stored and held on the recording medium. There is an effect that the video can be edited and reproduced based on the video. In addition, there is an effect that a video can be edited and reproduced based on the editing information set for each of the recording media on which different contents are recorded.
Furthermore, since the editing device is configured to be able to store the editing information, it is possible to edit and reproduce the video on the recording medium on which the editing information has been set once, based on the editing information. There is an effect that can be.
[Brief description of the drawings]
FIG. 1 is a block diagram for explaining an embodiment of an editing device according to the present invention.
FIG. 2 is a block diagram for explaining the operation of a control means.
FIG. 3 is a flowchart for explaining a search operation.
FIG. 4 is a block diagram for explaining the operation of the signal processing means.
FIG. 5 is a time chart for explaining the operation of the editing device according to the present invention.
FIG. 6 is a block diagram for explaining a conventional editing device.
[Explanation of symbols]
1 Recording medium
2 Signal processing means
2a Video signal
3 storage means
4 Switching means
5 control means
51a Edit instruction information

Claims (2)

Signal processing means for at least reproducing a video signal recorded on a recording medium,
Storage means for storing an output signal of the signal processing means for one field or one frame period ;
Switching means for switching and outputting an output signal of the signal processing means and an output signal of the storage means;
Control means for controlling the signal processing means, the switching means and the storage means, respectively,
An editing apparatus, characterized in that the video signal recorded on the recording medium is edited and reproduced in a desired order by switching of the switching means based on editing instruction information. The editing device according to claim 1,
A storage holding unit that stores and holds editing information for performing control of editing and reproducing the video signal in a desired order;
In the recording medium, a recording means for recording hold editing information for performing control to play the video signal edited desired order,
Further having
The video signal is controlled to be edited and reproduced in a desired order based on the editing information stored by the storage holding unit or recorded on the recording medium by the recording unit. Editing device.

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