JP4035984B2 - Information recording apparatus, camera-integrated information recording apparatus, and information recording method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an information recording apparatus and a recording method for recording information on a rewritable recording medium such as a DVD-RAM or a write-once recording medium such as a DVD-R.
[0002]
[Prior art]
As a recording medium used in a video camera, it has been common to use a magnetic tape for a long time. On the other hand, with the development of recording / reproducing techniques for disk-shaped recording media and high-density technologies, disk-shaped recording media have come into practical use. For example, a video camera or an information recording apparatus using a DVD-RAM as a rewritable recording medium, a DVD-R as a write-once recording medium, or the like as a recording medium can be given.
Since a video camera using a DVD-RAM as a recording medium can be randomly accessed, it is possible to easily search for captured videos. In addition, operability such as easy editing is improved.
[0003]
When a user plays a video taken with a camera using a DVD-RAM as a recording medium, a navigation screen that displays a thumbnail image of the video is generally used. The navigation screen is a user interface that displays, for example, the head image as a thumbnail screen for each scene recorded by the video camera, and allows the user to easily search for images taken so far. For example, twelve thumbnails are displayed on the navigation screen, and the user can search for and play a favorite video from the twelve thumbnails.
[0004]
In consideration of compatibility with existing DVD playback devices, devices in which a DVD-R recording function is added to a DVD-RAM recording device have also appeared. DVD-RAM is also widely used in personal computers and has become widespread due to its large capacity, but since it is not compatible with existing DVD playback devices that are widely used in the world, what is recorded with DVD-RAM is the existing DVD It cannot be played back on a playback device. Therefore, in order to perform playback on a DVD playback device, recording is performed on a DVD-R in a video format that can be played back on an existing playback device.
[0005]
[Problems to be solved by the invention]
However, even in the case of recording on a DVD-R, a finalization process called finalization must be performed in order to reproduce with an existing DVD reproducing apparatus. The finalization is disclosed in Japanese Patent Laid-Open No. 8-273304. A DVD-R is a write-once recording medium, similar to a CD-R, but once a DVD-R has been finalized, it cannot be recorded again. In general, reading with a DVD-RAM or DVD-R recording apparatus often takes time. This is because the type of the recording medium must be determined in order to determine various recording media.
For example, when the user wants to shoot and the DVD-R is selected as the recording medium and the finalization has been performed, the recording medium is taken out, and the DVD-RAM or another DVD-R is installed. Must be set to It takes a few seconds to several tens of seconds to replace the recording medium. Naturally, the opportunity for the user to miss the scene he wants to take increases. In addition, since a still image can be recorded on the same recording medium in a DVD-RAM camera, a still image can be easily photographed like a digital camera. However, still images cannot be recorded by DVD-R. That is, the recording medium must be replaced whenever the DVD-R is set. For this reason, there are more opportunities to miss a shooting opportunity when shooting a still image. In the case of moving images, there are many cases where there is no problem even if some head scenes are applied, but this is not the case in the case of still images.
[0006]
Further, DVD-RAM and DVD-R have high compatibility with a personal computer, and images taken with a DVD-RAM video camera can be taken into the personal computer. In the case of a DVD-RAM video camera, an 80 mm disk using a cartridge is used for miniaturization, so when setting it to a DVD-RAM drive attached to a general personal computer, it is removed from the cartridge and placed in a bare state. There must be. In the state of the bear once taken out from the cartridge, the DVD-RAM and the DVD-R may be indistinguishable in appearance. Even at this time, if the type of the recording medium is always displayed, the medium can be identified.
[0007]
In order to solve the above problem, it is necessary to always display the disc type and the finalized state at the time of shooting or displaying the navigation screen. Since the user can understand the type of the disc and grasp the finalized state, it is possible to avoid missing a shooting opportunity. Further, in order to determine whether the recording medium set in the recording apparatus is a DVD-RAM or a DVD-R, it is possible to determine without removing the recording medium from the apparatus one by one.
Also, the user displays a pull-down menu from the navigation screen and performs various processes. However, when using DVD-RAM, there is no need to finalize, so if you do not display finalization from the pull-down menu, you will perform an incorrect operation. Nor. Further, the present invention is not limited to finalization, and the processing unique to the recording medium may be displayed only when the medium is set. This saves time for selecting a process and improves convenience.
[0008]
An object of the present invention is to provide an information recording technique capable of knowing the type of recording medium used and the end state of the recording medium.
[0009]
[Means for Solving the Problems]
To achieve the above object, the present invention provides a video compression means for compressing a video signal, an audio compression means for compressing an audio signal, the video data compressed by the video compression means, and the audio compression means. Demultiplexing means for demultiplexing audio data in a predetermined format, determination / writing means for determining the type of recording medium and writing according to the medium, and multiplexing of video and audio created by the demultiplexing means Recording medium means for storing separated data, control means for controlling the start timing and end timing of recording, end processing means for performing end processing according to the recording medium, and displaying a thumbnail image of the recorded video The camera-integrated information recording apparatus comprises means and means for always displaying the type of the recording medium and the state of the end processing in the screen for displaying the video.
[0010]
According to the present invention, a recording medium set in an information recording apparatus can be easily recognized. Further, by always displaying the state of the end processing, it is possible to avoid erroneous recording on a finalized recording medium, and it is difficult to miss a photographing opportunity.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings using examples.
First, the first embodiment will be described with reference to FIGS. A video camera capable of recording both DVD-RAM and DVD-R discs will be described as an example system.
[0012]
FIG. 1 is a diagram showing an embodiment of a navigation screen according to the present invention. FIG. 1 (a) shows a navigation screen for a DVD-RAM disc, FIG. 1 (b) shows a navigation screen for a DVD-R disc, and FIG. (C) is a figure which shows the navigation screen which performed the finalization process with a DVD-R disc. 1 (a) to 1 (c), 100, 110, and 120 are disk display units for displaying the type of disc and the finalized state, 101 is a process content display unit for displaying the content of processing, and 102 is It is a thumbnail image. Although 12 thumbnails are displayed in FIG. 1A, it is not necessary to limit to 12 thumbnails. In short, any number is acceptable as long as it is easy for the user to see. Reference numeral 103 denotes a thumbnail information display unit that displays information related to the selected thumbnail image, and reference numeral 104 denotes an operation button explanation display unit.
[0013]
FIG. 2 is a diagram showing an embodiment of a screen during photographing according to the present invention. FIG. 2 (a) shows a screen when photographing with a DVD-RAM, and FIG. 2 (b) is photographing with a DVD-R. FIG. 2 (c) shows a screen when finalization processing is performed after shooting with the DVD-R. Usually, a video camera starts recording while confirming an image to be taken on a liquid crystal panel or the like. It is a screen in a state where this shooting is performed. In FIG. 2A, reference numeral 200 denotes a disk display unit that displays a disk type and a finalized state, and represents a case of a DVD-RAM. Reference numeral 201 denotes a screen on which a video to be taken is displayed. Reference numeral 202 denotes an icon for recording a moving image. “FINE” represents a recording bit rate mode. For example, when recording at 6 Mbps, it is displayed as FINE, and when recording at 3 Mbps, it is displayed as STANDARD. A recording state display unit 203 displays the recording state. The recording status display unit 203 displays the elapsed recording time and the remaining time. A time display unit 204 displays the current time.
In FIG. 2B, reference numeral 210 denotes a disc display unit that displays the disc type and finalized state, and represents the case of DVD-R. In FIG. 2C, reference numeral 220 denotes a disc display unit that displays the disc type and finalization status, and represents a status where finalization is performed in the case of DVD-R.
[0014]
FIG. 3 is a block diagram showing an embodiment of an information recording apparatus according to the present invention. The information recording apparatus shows a video camera capable of recording both DVD-RAM and DVD-R optical disks.
In the figure, reference numeral 400 denotes a lens. Reference numeral 401 denotes a CCD that converts an optical signal obtained through the lens 400 into an electrical signal. Reference numeral 402 denotes an A / D converter that converts an analog electric signal converted by the CCD 401 into a digital signal. A signal processing unit 403 converts the digital signal converted by the A / D converter 402 into a format capable of MPEG compression, and converts the format to NTSC or the like during reproduction. Reference numeral 404 denotes a video compression / decompression unit that performs MPEG compression on the video signal converted by the signal processing unit 403, and decompresses the compressed signal at the time of reproduction and sends it to the signal processing unit 403. Reference numeral 406 denotes a microphone, and reference numeral 407 denotes an AMP unit that amplifies an audio signal from the microphone 406. Reference numeral 408 denotes an A / D and D / A converter that converts the audio signal amplified by the AMP unit 407 into a digital signal. Reference numeral 409 denotes an MPEG or Dolby digital signal converted by the A / D and D / A converter 408. An audio compression unit that performs compression. Reference numeral 415 denotes a display panel such as a liquid crystal monitor, and 416 denotes a speaker.
Reference numeral 405 denotes a control unit that controls the start and end timings of recording and confirms discrimination of the recording medium 412, and 409 is an audio compression unit that compresses an audio signal output from the microphone 406. Reference numeral 410 denotes a demultiplexing unit that multiplexes data output from the video compression unit 409 and the audio compression unit 409 into a system stream conforming to a standard such as MPEG, or demultiplexes the system stream into an elementary stream. Reference numeral 411 denotes a driver unit that performs writing and reading according to the system stream after the system stream generated by the demultiplexing unit 410 is identified, and reference numeral 412 denotes a recording medium that is read and written by the driver unit 411. It means DVD-R. Reference numeral 414 denotes an end processing unit for finalizing the end DVD-R. Reference numeral 417 denotes an input processing unit that moves a cursor to operate an operation button and also has a menu button for displaying a menu.
[0015]
First, a process for recording a video will be described.
First, the user sets a disc in the video camera. When a disc is set in the video camera, the control unit 405 discriminates the disc through the driver unit 411, and holds the disc information until the next disc is taken out. If the disc is a DVD-RAM, it is displayed as a DVD-RAM on the disc display unit 200 in FIG. 2A, and if it is a DVD-R, it is displayed on the disc display unit 210 in FIG. It is displayed like DVD-R. Actually, an image to be photographed is displayed on the screen 201 in FIG. This image is an image input from the lens 400 of FIG. The video signal input from the lens 400 is input to the A / D converter 402 through the CCD 401, where it is converted into a digital signal. The converted digital signal is converted into a format that allows MPEG recording by the signal processing unit 403, and MPEG compressed by the video compression / decompression unit 404. The audio signal input from the microphone 406 is amplified by the AMP 407 and then converted into a digital signal by the A / D and D / A converter 408. The converted digital signal is compressed by an audio compression / decompression unit 409 such as MPEG or Dolby Digital.
[0016]
The demultiplexing unit 410 generates a system stream that complies with the MPEG standard from the compressed video data and the compressed audio data generated by the video compression / decompression unit 404 and the audio compression / decompression unit 409, and matches the specified DVD format. Packetization. For DVD-RAM, packetization is performed according to the video recording standard, and for DVD-R, the video format of the read-only disc is used. At this time, a buffer is often provided before and after the demultiplexing unit 410. The system stream generated by the demultiplexing unit 410 is recorded on the recording medium 412 via a buffer or the like not shown in FIG. Thereafter, when the user gives an instruction to end, for example, when the button of the input processing unit 417 is pressed (recording and recording stop may be the same button), the control unit 405 sends an end command to each block. Do. At this time, the finalization is not performed if the data is recorded in the DVD-RAM format. If it was recorded on a DVD-R, finalize it. If finalization is performed, playback on an existing DVD playback device becomes possible. However, finalization is not always performed because once it can no longer be added to the disc, it is generally better to allow the user to specify whether or not to finalize. Of course, finalization may be automatically performed at the end of DVD-R recording.
[0017]
When the finalization process is completed, a symbol (F) representing finalization is displayed next to the DVD-R, as shown in the disc display unit 220 in FIG. Since finalization is only for DVD-R, only (F) may be used. In short, it is only necessary to know the state of the disk. Since additional recording cannot be performed on the finalized disc, if “recording is not possible” is displayed on the recording status display unit 230 in FIG. 2C, the recording becomes more user-friendly.
[0018]
Next, processing during reproduction will be described.
The user can confirm the previously recorded scene (recording start and recording end as one scene) on the navigation screen. A general video camera is provided with a display panel 415 such as a liquid crystal monitor. A navigation screen as shown in FIGS. 1A to 1C is displayed on the display panel 415. In the embodiment, there are 12 thumbnail images 102. That is, it can be seen that at least 12 scenes are recorded. If you want to see more than 13 scenes, you can display the next navigation screen to turn the page. As for the thumbnail image, the image of the first picture may be stored in the memory at the time of recording. Alternatively, it may be created when the navigation screen is displayed.
[0019]
If the recording medium is a DVD-RAM, as shown in FIG. 1A, it is displayed on the disk display unit 100 like a DVD-RAM, and if it is a DVD-R, it is shown in FIG. As shown, it is displayed on the disk display unit 110 as a DVD-R. First, the user selects a favorite scene. When the playback button is pressed after selection, the selected scene is played back from the beginning. When the user presses the playback button on the operation button display unit 104 in FIG. 1, the driver unit 411 determines whether the recording medium is a DVD-RAM or a DVD-R, reads out data according to the medium, and passes through a buffer or the like. The data is sent to the demultiplexing unit 410. The sent data is separated because it is packetized, and the video elementary stream is sent to the video compression / decompression unit 404 and the audio elementary stream is sent to the audio compression / decompression unit 409. The expanded video signal is converted into a format such as NTSC by the signal processing unit 403 and then displayed on the display panel 415. The voice is decompressed by the voice compression / decompression unit 409, converted into an analog voice signal by the A / D and D / A converter 408, and amplified by the AMP unit 407. The amplified audio signal is output through the speaker 406. The video and audio may be synchronized at this time by the demultiplexing unit 410.
[0020]
If finalization is performed, if there is no finalization display at all times, it may be possible to record the finalized recording at the next recording. If you want to take a picture, the above situation will require time to change the disc, and you will miss the chance to shoot. However, as shown in FIG. 1 (c), the user cannot write to the disc any more by always displaying (F) like the disc display unit 120 or the disc display unit 220 of FIG. 2 (c). Can be recognized. Therefore, an appropriate disc can be selected before shooting, and the shooting opportunity is not lost. If you want to shoot a still image and the DVD-R is set, you can immediately replace the DVD-RAM with the disc. In this way, it is possible to shoot a still image at any time and avoid missing a shooting opportunity.
[0021]
In general, when taking a picture many times in the future (such as when dubbing and storing on another medium such as a VHS tape), a DVD-RAM that is recorded in a library and left in a library is a DVD. -R is often recorded. In the case of the embodiment, since the disc set in the video camera can be known immediately, even if the DVD-RAM and DVD-R are lent to a person by mixing, it can be easily understood which is set when the DVD-RAM is returned. . Also, if the disc type is known, video that is intended to be temporarily recorded (for example, video that is desired to be recorded on the DVD-RAM) is not recorded on the DVD-R. Since a DVD-R can be recorded only once, if it is mistakenly recorded and finalized once, it cannot be added again and is wasted.
[0022]
As described above, in the above-described embodiment, the disc type is always displayed at the time of shooting or when the navigation screen is displayed, so that the user can easily know the disc type and reduce unnecessary operations. In addition, since the finalization state can be recognized at all times, an appropriate disc can be prepared in advance, and chances of missing a shooting opportunity are reduced.
[0023]
Next, a second embodiment of the present invention will be described with reference to FIG.
FIG. 4 is a diagram showing an embodiment of a pull-down screen on the navigation screen according to the present invention, FIG. 4 (a) is a diagram of a pull-down screen when a DVD-RAM is used, and FIG. 4 (b) is a DVD. It is a figure of the pull-down screen at the time of using -R.
A method when the user supports the DVD-R finalization process will be described below.
The video camera described in the second embodiment uses a video camera capable of recording both DVD-RAM and DVD-R discs as in the first embodiment. The recording process and the reproduction process are the same as those in the first embodiment.
[0024]
FIG. 4 shows a screen when the menu button of the input processing unit 417 in FIG. 3 is pressed while the navigation screen is displayed, and a pull-down menu is displayed on the navigation screen. In particular, assume that the format and finalize items are displayed. When the recording medium is a DVD-RAM, the pull-down menu 300 has no finalization item as shown in FIG. When the recording medium is a DVD-R, finalization is displayed in the pull-down menu 310 as shown in FIG.
[0025]
First, the user presses the menu button when finalizing. As a result, a pull-down menu is displayed on the navigation screen. This pull-down menu may not be displayed immediately. The first display displays large items. For example, “playlist” or “disc”. After the large item pull-down menu is displayed, the “disk” is selected, and the pull-down menu below it may be used. The user-friendliness is improved by dividing the menu for each item. FIG. 4 shows a case where items are displayed first.
[0026]
In the case of a DVD-R, finalization is necessary, so finalization options are displayed in a pull-down menu such as the pull-down menu 310 of FIG. However, since finalization is not necessary when the recording medium is a DVD-RAM, finalization is not displayed in the pull-down menu 300 in order to avoid erroneous selection. By doing so, the user does not accidentally select the finalizing process even though the recording medium 412 is a DVD-RAM.
[0027]
The processing described above is not limited to finalization, and any processing limited to a recording medium may be performed, and processing limited to a recording medium to be used may be displayed in a pull-down menu. Thus, by displaying the processing necessary for each recording medium in the pull-down menu, the user can avoid erroneous selection.
[0028]
As described above, according to the present invention, in the camera-integrated information recording apparatus in which the DVD-RAM and the DVD-R are integrated, the disc type is always displayed at the time of shooting or when the navigation screen is displayed. The user can easily know the type of the disk and can reduce unnecessary operations. In addition, since the finalization state can be recognized at all times, an appropriate disc can be prepared in advance, and chances of missing a shooting opportunity are reduced.
[0029]
【The invention's effect】
As described above, according to the present invention, the type of the disc is always displayed at the time of shooting or when the navigation screen is displayed, so that the user can easily know the type of the disc and reduce unnecessary operations. .
In addition, since the finalization state can be recognized at any time, an appropriate disc can be prepared in advance.
[Brief description of the drawings]
FIG. 1 is a diagram showing an embodiment of a navigation screen according to the present invention.
FIG. 2 is a diagram illustrating an example of a screen during photographing according to the present invention.
FIG. 3 is a block diagram showing an embodiment of an information recording apparatus according to the present invention.
FIG. 4 is a diagram illustrating an example of a pull-down screen on a navigation screen according to the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 100 ... Disc type display part, 101 ... Processing explanation display part, 102 ... Thumbnail image, 103 ... Disc information display part, 104 ... Operation explanation display part, 110 ... Disc type display part, 120 ... Finalization state display part, 200 ... Disc Type display unit, 201 ... shooting screen, 202 ... video icon, 203 ... recording information display unit, 204 ... time display unit, 210 ... disc type display unit, 220 ... disc type display unit, 230 ... recording status display unit, 300 ... Pull-down menu section, 310 ... Pull-down menu section, 400 ... Lens, 401 ... CCD, 402 ... A / D converter, 403 ... Signal processing section, 404 ... Video compression / expansion section, 405 ... Control section, 406 ... Microphone, 407 ... AMP, 408, A / D and D / A converter, 409, audio compression / decompression unit, 410, demultiplexing unit, 4 1 ... driver unit, 412 ... recording medium, 414 ... end processing section, 415 ... LCD panel, 416 ... speaker, 417 ... input processing unit.

Claims (7)

Rewritable recording medium or the information recording apparatus capable of recording in write-once recording medium, comprising means for displaying a thumbnail image of the recorded video, in the screen displaying the thumbnail image, record medium When the finalization, which is a process for reproducing the write-once type recording medium on the playback device and cannot be added, has been processed, information indicating that the finalization has been processed is always displayed. An information recording apparatus characterized by the above. Rewritable recording medium or the information recording apparatus capable of recording in write-once recording medium, comprising means for displaying a thumbnail image of the recorded video, in the screen for displaying the thumbnail image, additionally serial type recording medium when finalizing is processing an even and can not write-once processing for reproducing the reproduction apparatus it has been processed, the information recording device and displaying constantly the finalization has been processed. The information recording apparatus according to claim 1 or 2, wherein said rewritable recording medium is a DVD-RAM, the information recording apparatus, wherein the write-once recording medium is a DVD-R. In an information recording apparatus capable of recording on a DVD-RAM and a DVD-R, the information recording apparatus includes means for displaying a thumbnail image of a recorded video, and the type of the recording medium and the DVD-R are displayed in a screen for displaying the video. when finalizing is processing an even and can not write-once processing for reproducing the reproduction apparatus has been processed, the information recording device and displaying the information indicating that the finalization has been processed. In an information recording apparatus capable of recording on DVD-RAM and DVD-R, video compression means for compressing a video signal, audio compression means for compressing an audio signal, video data compressed by the video compression means, A demultiplexing unit for demultiplexing the audio data compressed by the audio compression unit in a predetermined format; a determination / writing unit for determining the type of the recording medium and performing writing according to the medium; and the demultiplexing unit Recording medium means for storing the created video and audio demultiplexed data, control means for controlling the start timing and end timing of recording, end processing means for performing end processing according to the recording medium, and the recorded comprising means for displaying a thumbnail image of the video were, reproduced by the reproducing apparatus of the type and the write-once recording medium of constantly recording medium in the screen that displays the video When finalization because it is of a process can not additional writing process has been processed, the camera-integrated recording apparatus characterized by displaying the information indicating that the finalization has been processed. Reproducing rewritable recording medium, or, and displaying a thumbnail image of the recorded video in the write-once recording medium, in the screen displaying the thumbnail image, the type of record medium, a write-once recording medium An information recording method comprising: a step of displaying information indicating that the finalization has been processed when the finalization, which is a process for reproduction by the apparatus and cannot be added, has been processed . In a camera-integrated information recording apparatus for recording video / audio information on a rewritable rewritable recording medium and a non-rewritable write-once recording medium,
A video information input circuit for photographing a subject and inputting video information of the subject;
A voice information input circuit for inputting voice information;
Multiplexing circuit that compresses video information input from the video information input circuit and audio information input from the audio information input circuit, multiplexes the compressed video information and audio information, and outputs video audio information When,
A recording / reproducing drive circuit for recording the video / audio information output from the multiplexing circuit on the rewritable recording medium or the write-once recording medium;
A display panel for displaying video information,
In the display panel, the recording medium in which the recording / reproducing drive circuit can record is either the rewritable recording medium or the recordable recording medium, and the recording medium is the recordable recording medium. If the finalization, which is a process for reproducing the write-once recording medium with a playback apparatus and cannot be added, has been processed, information indicating that the finalization has been processed is stored in the recording medium. A camera displaying a thumbnail image of video information recorded on the screen or a screen displaying video information of a subject input from the video information input circuit Integrated information recording device.

Images