JP2006127629A - Video recording and reproducing apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To diversify a use form and to enhance convenience of a video recording and reproducing apparatus. <P>SOLUTION: In the video recording and reproducing apparatus, recording operations of a main video image and main sound captured in an input part and sub-sound or sub-video image captured in a separately provided input part are sequentially executed. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to recording of main audio and video and sub audio or video in a video recording / reproducing apparatus.

  In recent years, a video recording / reproducing apparatus using an optical disk has attracted widespread attention.

  More specifically, the magnetic tape medium used in the conventional digital video camcorder is replaced with a rewritable optical disk medium based on the DVD-RAM (Digital Versatile Disk Random Access Memory) standard.

  The video recording / playback apparatus has greatly improved random accessibility by using an optical disc, and has greatly improved user convenience such as editing and immediate playback of video / audio recorded on the optical disc.

Japanese Laid-Open Patent Publication No. 06-309803 discloses a format in which an audio after recording (hereinafter referred to as after-recording) area is provided on the same track separately from an address information area and a data area in a recordable optical disc. ing. According to the present invention, it is shown that by using the format, after-recording of audio is possible, and an optical disk system having a high added value can be configured by widening the use range.
Japanese Patent Laid-Open No. 06-309803

  An object of the present invention is to provide a video recording / reproducing apparatus that uses various optical forms and improves convenience in the video recording / reproducing apparatus using the optical disc as described above.

  A first data area for recording a first signal composed of a first video and audio, and a second data area used for editing the first signal recorded in the first data area. A video for recording and reproducing video and audio on a recording medium in which a second data area for recording a second signal composed of video or audio is a recording unit having a data area arranged continuously. A recording / reproducing apparatus, comprising: a first input unit for inputting the first video and audio; and a second input unit for inputting the second video or audio; A video recording / reproducing apparatus, wherein the first video and audio recording operation and the second video or audio recording operation are sequentially executed.

  According to the present invention, it is possible to diversify usage forms and improve convenience in a video recording / reproducing apparatus.

(First embodiment)
Embodiments of a video recording / playback apparatus according to the present invention will be described below with reference to the drawings. FIG. 1 is a schematic diagram of a first video recording / reproducing apparatus according to the present invention.

  In FIG. 1, 101 is an optical disk, 102 is a CPU that controls the entire apparatus, 103 is a memory for temporarily storing data such as video and audio, and 104 is a spindle motor that rotates the optical disk 101. is there.

  Reference numeral 105 denotes a light source such as a semiconductor laser and a laser control circuit for controlling the output power of the light source. Reference numeral 106 condenses the light beam from the light source on the optical disc 101 and the optical disc 101. This is an optical head for detecting reflected or transmitted light from the head.

  Reference numeral 107 denotes a servo control unit for focusing and tracking the light beam collected by the optical head 106 at a desired position on the optical disc 101, and 108 moves the optical head 106 to a desired track position on the optical disc 101. It is a seek control part which performs control for this.

  A reproduction signal processing unit 109 generates a decoded data by processing a reproduction signal obtained from the optical disk 101 by the optical head 106, and 110 processes the code data by processing the signal suitable for recording on the optical disk 101. A recording signal processing unit to be generated. Reference numeral 111 denotes an ECC (Error Check and Correct), which performs a process of adding a correction code to the recording data to be recorded on the optical disc 101 at the time of recording, checks an error of the decoded data reproduced from the optical disc 101 at the time of reproduction, and a correction code Is used to perform error correction processing of the decoded data.

  Reference numeral 112 denotes a video input unit that inputs a video signal recorded on the optical disc 101, and 113 denotes a first audio input unit that inputs an audio signal recorded on the optical disc 101. The video and the first audio signal obtained by the first audio input unit are processed into a predetermined format by the first conversion unit 115. Reference numeral 114 denotes a second audio input unit for inputting an audio signal to be recorded on the optical disc 101, which is processed by the second conversion unit 116 into a predetermined format.

  Here, a format for recording video and audio signals on the optical disc 101 used in the apparatus according to the present invention will be described.

  In the optical disc 101 of the present invention, as disclosed in Japanese Patent Laid-Open No. 2003-59196, video data consisting of video and audio and after-recording (hereinafter referred to as after-recording) data of audio are continuously arranged on a recording medium. Recording / playback is performed with the above configuration. An outline of the recording format is shown in FIG.

  As shown in FIG. 2, the recording format is called an Audio Video stream (hereinafter referred to as AV stream), and is composed of an integer number (1... N) Recording Units (hereinafter referred to as RU). The RU is a unit for continuous recording on the optical disc 101.

  Further, the RU is composed of an integer number (1... M) of video units (hereinafter referred to as VU), and the VU is the minimum unit that can be recorded on and reproduced from the optical disc 101. The VU includes a Video area in which video data is recorded / reproduced, an Audio area in which first audio data is recorded / reproduced, and a Post Recording Unit (hereinafter referred to as PRU) area in which second audio data is recorded / reproduced. Composed.

  The Video area is composed of an integer number of Group Of Pictures (hereinafter referred to as GOP) consisting of video data of about 1 second, and the Audio area and the PRU area are an integer number of Audio Access Units consisting of audio data of a certain size. (Hereinafter referred to as AAU).

  Here, GOP is a data compression unit in the MPEG-2 standard, and similarly, AAU is a data compression unit in the MPEG-1 standard.

  In FIG. 2, RU_1 indicates the first RU in the AV stream, and is expressed as RU_2... RU_N in order. Similarly, VU_1_1 indicates the first VU in the first RU_1, and is sequentially expressed as VU_1_2... VU_N_M (VU_N_M is the Mth VU in the Nth RU_N). In addition, these areas corresponding to the Video area, the Audio area, and the PRU area in each VU_N_M are denoted as Video_N_M, Audio_N_M, and PRU_N_M, respectively.

  Further, the Video area where video data is recorded / reproduced, the Audio area where first audio data is recorded / reproduced, and the PRU area where second audio data is recorded / reproduced are physically on the optical disc 101. It is arranged as a continuous area.

  Next, a normal recording operation will be described below with reference to FIG. Here, normal recording refers to AV stream recording in which the second audio data is not recorded in the PRU area.

  First, the seek control unit 108 seeks the optical pickup 106 to the head address of the first VU_1_1 constituting the first RU_1, and then the servo control unit 107 transmits the light beam from the laser control unit onto the optical disc 101. Focus and tracking control is performed.

  For example, the VU_1_1 is arranged as a physically continuous area in the order of PRU_1_1, Audio_1_1, and Video_1_1 on the optical disc 101.

  In the normal recording, since the second audio data is not recorded in the PRU_1_1, the optical up 106 jumps to the Audio_1_1 constituting the VU_1_1, records the predetermined first audio data, and then continues. Predetermined video data is recorded in Video_1_1. At this time, in accordance with the seek operation to the top address of VU_1_1, a method of seeking to Audio_1_1 constituting VU_1_1 may be used.

  When the recording of the VU_1_1 is finished, the recording of VU_1_2 is continuously performed. Similarly to the VU_1_1, the VU_1_2 is also arranged on the optical disc 101 as a physically continuous area in the order of PRU_1_2, Audio_1_2, and Video_1_2. Therefore, the optical pickup 106 moves to the Audio_1_2 by a track jump after the recording of the Video_1_1, and records predetermined first audio data.

  In this way, the recording of the RU_1 is completed by repeatedly recording the Audio_1_M area and the Video_1_M area and the track jump of the PRU_1_M area for the M VU_1_Ms constituting the RU_1.

  Further, recording of a predetermined AV stream is performed by recording RU_2, RU_3,... RU_N following RU_1.

  Therefore, in the normal recording, the PRU_N_M area constituting the M VU_N_M belonging to the RU_N, that is, the area where the second audio data is recorded / reproduced is in an unrecorded state.

  In the first embodiment according to the present invention, any second audio data is recorded in the PRU area even while the video and the first audio data are recorded in the Video area and the Audio area. .

  The recording sequence of the video recording / reproducing apparatus according to the present invention will be described below with reference to the flowcharts of FIGS.

  First, when the CPU 102 recognizes the start of shooting / recording with a button (not shown) or the like in S401, the shooting sequence S501 is executed until the end of shooting / recording is recognized in S402.

  FIG. 5 shows a detailed flowchart of the photographing sequence S501.

The video signal input from the video input unit 112 in the present invention is subjected to signal processing based on the MPEG-2 standard in the first conversion unit 115 and converted into video data in accordance with the recording format. At the same time, the first audio signal input from the first audio input unit 113 is subjected to signal processing based on the MPEG-1 standard in the first conversion unit 115, and the first audio signal according to the recording format is processed. It is converted into audio data. (S502)
Further, separately from this, the second audio signal input from the second audio input unit 114 is subjected to signal processing based on the MPEG-1 standard in the second conversion unit 116 and conforms to the recording format. Conversion processing is performed on the second audio data. (S502)
The video data and first audio data processed by the first conversion unit and the second audio data processed by the second conversion unit are temporarily stored in the memory 103 sequentially. (S503)
Here, a CCD imaging device is widely used as the video input unit 112, and a microphone is widely used as the first audio input unit 113. Further, the second audio input unit 114, which is a feature of the present invention, includes an audio playback device using a semiconductor memory such as an SD card, a pin microphone different from the microphone used in the first audio input unit 113, and the like. In any case, it is desirable that the first and second audio signals obtained from the first audio input unit 112 and the second audio input unit 114 are clearly separated.

  Further, it is most effective that the second audio signal input from the second audio input unit 114 is a Back Ground Music (BGM) signal that matches the video signal input from the video input unit 112. However, it may be a scene commentary or a narration signal explaining a character in accordance with the video signal.

  FIG. 6 shows a configuration of the video data, the first audio data, and the second audio data temporarily stored in the memory 103.

  The video data is primarily stored in the order of Video_1_1, Video_1_2,..., Video_N_M based on the recording format according to the present invention. Similarly, the first audio data is based on the recording format according to the present invention, Audio_1_1, Audio_1_2,. Primary holding is in the order of Audio_N_M. Further, the second audio data is primarily held in the order of PRU_1_1, PRU_1_2,... PRU_N_M based on the recording format according to the present invention.

  The video data and the first and second audio data that are primarily held in the memory 103 are not limited to those held by dividing the memory area as shown in FIG. 6A, but as shown in FIG. 6B. It may be held separately in an area equal to the physical arrangement on the optical disc 101 according to the present invention. Furthermore, as shown in FIG. 6C, a memory 103a that primarily holds video data and first audio data and a memory 103b that primarily holds second audio data are provided independently. Also good.

  In step S504, it is monitored whether the video data and the first and second audio data temporarily stored in the memory 103 have reached a predetermined value or more. The predetermined value is preferably set for each minimum recording / reproduction unit VU of the recording format according to the present invention, but for each continuous recording / reproducing unit RU of the recording format according to the present invention, It may be what you do.

  When the video data of the predetermined value, the first audio data, and the second audio data are temporarily stored in the memory 103 in S504, the recording sequence S601 is started. If the memory 103 is less than the predetermined value, the data conversion process 502 and the data temporary storage process 503 are repeated.

  FIG. 7 shows a detailed flowchart of the recording sequence S601.

First, in S602, the servo state of the optical pickup 106 of the video recording / reproducing apparatus according to the present invention is identified. When the servo is in a pause state, servo control is activated in S603. On the other hand, when the servo control is already activated, in order to move the optical pickup 106 to a predetermined address position in order to record the data temporarily held in the memory 103 at a predetermined position on the optical disc 101. Seek control is performed at the same time. (S604)
The servo control is performed by a servo control unit 107 shown in FIG. Examples of the control include a spindle motor that rotationally drives the optical disc 101 and focus / tracking control of the optical pickup 106.

Subsequently, in S605, it is determined whether the data to be recorded on the optical disc 101 is the PRU composed of the second audio data, or the Video and Audio composed of the video data and the first audio data. The When the PRU is determined, the PRU_1_1 temporarily held in the memory 103 is read and recorded at a predetermined position on the optical disc 101 where PRU_1_1 is to be recorded. (S606)
Here, the PRU_1_1, Audio_1_1, Video_1_1, PRU_1_2, Audio_1_2, Video_1_2,. When recording at a predetermined position on the optical disc 101 is completed, Audio_1_1 temporarily stored in the memory 103 is read out, and recording is performed at a predetermined position on the optical disc 101. Further, Video_1_1 temporarily held in the memory 103 is read out and recorded at a predetermined position on the optical disc 101, whereby a data recording sequence is executed.

  That is, S605 → S606 → S608 → S605 → S607 → S608 → S605 → S606... RETURN and the data to be recorded on the optical disc 101 are selected, and the recording is repeated, so that PRU_1_1, Audio_1_1, Video_1_1, PRU_1_2, Audio_1_2, Video_1_2... PRU_N_M, Audio_N_M, and Video_N_M are continuously recorded in this order.

  As described above, according to the video / audio recording / reproducing apparatus shown in the first embodiment, the video and the first audio data in the Video area and the Audio area are stored in the PRU area continuously provided in the Video area and the Audio area. Even during recording, the second audio data for editing can be recorded, and even while the second audio data is being recorded in the PRU area, Video can be recorded. Video and first audio data can also be recorded in the area and the audio area.

  The second audio data may record a description of a scene in accordance with the first video or / and audio signal, a narration signal explaining a character, or the like, and creates a new added value as a video / audio recording / reproducing apparatus. Is.

  In addition, when editing is performed after recording, the second area for editing can be rewritten, and the second audio data that has been recorded once can be edited later. Convenience can be improved.

(Second embodiment)
Another embodiment of the video recording / reproducing method and apparatus of the present invention will be described below with reference to the drawings. FIG. 8 is a schematic diagram of a second video recording / reproducing apparatus according to the present invention.

  In FIG. 8, the same parts as those in the first embodiment are denoted by the same reference numerals. In FIG. 8, the optical disk 101, CPU 102, memory 103, spindle motor 104, laser control circuit 105, optical head 106, servo control unit 107, seek control. The unit 108, the reproduction signal processing unit 109, the ECC 109, and the recording signal processing unit 110 have the same functions.

  Reference numeral 117 denotes a first video input unit that inputs a video signal recorded on the optical disc 101, and 118 denotes an audio input unit that inputs an audio signal recorded on the optical disc 101, and the first video input unit 117 and the first video and audio signal obtained by the audio input unit are processed by the first conversion unit 115 into a predetermined format. Reference numeral 119 denotes a second video input unit that inputs a second video signal to be recorded on the optical disc 101. The second video input unit 119 processes the video signal into a predetermined format.

  Here, the difference in format used in the first and second embodiments according to the present invention will be described.

  The PRU area in the first embodiment records audio data in AAU format according to the MPEG-1 standard. In the second embodiment, the video data input from the first video input unit 117 and the audio data input from the audio input unit 118 are recorded in accordance with the recording on the Video area and the Audio area on the optical disc 101. Thus, any second video data input from the second video input means 119 records second video data in the GOP format according to the MPEG-2 standard in the second converter 116. Is.

  The recording sequence of the second video recording / reproducing apparatus according to the present invention will be described below with reference to the flowcharts of FIGS.

  First, when the CPU 102 recognizes the start of shooting / recording with a button (not shown) or the like in S401, the shooting sequence S501 is executed until the end of shooting / recording is recognized in S402.

  FIG. 5 shows a detailed flowchart of the photographing sequence S501.

The first video signal input from the first video input unit 117 in the present invention is subjected to signal processing based on the MPEG-2 standard in the first conversion unit 115, and converted into video data in accordance with the recording format. Converted. At the same time, the audio signal input from the audio input unit 118 is subjected to signal processing based on the MPEG-1 standard in the first conversion unit 115 and converted into audio data in accordance with the recording format. (S502)
In addition, separately from this, the second video signal input from the second video input unit 119 is subjected to signal processing based on the MPEG-2 standard in the second conversion unit 116 and conforms to the recording format. Conversion processing to second video data is performed. (S502)
The first video data and audio data processed by the first conversion unit 115 and the second video data processed by the second conversion unit 116 are temporarily stored in the memory 103 sequentially. (S503)
Here, a CCD image sensor is widely used as the first video input unit 117, and a microphone is widely used as the first audio input unit 118. Further, as the second video input unit 119, which is a feature of the present invention, a video playback device using a semiconductor memory such as an SD card, an image pickup device different from the first video input unit 117 CCD image sensor, or the like is used. In any case, it is desirable that the first and second video signals obtained from the first video input unit 117 and the second video input unit 119 are clearly separated.

  It is most effective that the video signal input from the second video input unit 119 is a video signal for attaching a frame image in accordance with the video signal input from the first video input unit 117. This is a typical form of use. For example, when a wedding scene is being photographed, it is effective to attach a frame image with a floral pattern. Furthermore, when the first video signal is an athletic meet, to superimpose the video of the dog running as an animation signal, or to superimpose an animation signal that appears to be a giraffe participating in a ball race. The image signal or the like may be used.

  Next, the method of using the memory 103 according to the present invention and the recording sequence are omitted because they conform to the first embodiment.

  As described above, according to the video / audio recording / reproducing apparatus shown in the second embodiment, the first video and audio data is stored in the Video area and the Audio area in the PRU area provided continuously to the Video area and the Audio area. Even during recording, the second video data for editing can be recorded, and even while the second video data is being recorded in the PRU area, Video can be recorded. The first video and audio data can also be recorded in the area and the audio area.

  The second video data may be able to record a frame video signal, an animation signal, or the like that matches the first video and / or signal, and creates a new added value as a video / audio recording / reproducing apparatus.

  In addition, when editing is performed after recording, the second area for editing can be rewritten, and the second video data once recorded can be edited later. Convenience can be improved.

1 is a schematic diagram of a first video / audio recording / reproducing apparatus according to the present invention. FIG. 1 is a schematic of a recording format applied to the present invention. Conventional normal recording operation. The imaging | photography and recording sequence which concerns on this invention. The imaging | photography and recording sequence which concerns on this invention. The usage form of the memory according to the present invention. The imaging | photography and recording sequence which concerns on this invention. Schematic diagram of a second video / audio recording / reproducing apparatus according to the present invention.

Explanation of symbols

101 Optical disk 102 CPU
DESCRIPTION OF SYMBOLS 103 Memory 104 Spindle motor 105 Laser control circuit 106 Optical head 107 Servo control part 108 Seek control part 109 Playback signal processing part 110 Recording signal processing part 110 ECC
112 video input unit 113 first audio input unit 114 second audio input unit 115 first conversion unit 116 second conversion unit 117 first video input unit 118 audio input unit 119 second audio input unit

Claims (2)

A first data area for recording a first signal comprising a first video and audio;
A second data area for recording a second signal consisting of a second video or audio used when editing the first signal recorded in the first data area;
A video recording / reproducing apparatus that records and reproduces video and audio with respect to a recording medium whose recording unit is a continuously arranged data area,
A first input unit for inputting the first video and audio;
A second input unit for inputting the second video or audio separately;
The video recording / reproducing apparatus, wherein the first video and audio recording operation and the second video or audio recording operation are sequentially executed.   2. The video shooting / recording / reproducing apparatus according to claim 1, wherein the second signal recorded in the second data area can be erased.

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