JPH11213523A - Recorder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the occurrence of inconvenience that a user obtains a recording result different from his intention, and to effectively use a display part. SOLUTION: When a picture and sound recording mode is set, a picture being presently picked up or externally inputted is displayed on a display screen of a view finder 204 as a picture to be monitored. Moreover, when a speech recording mode is set, information related to sound date being presently inputted to be recorded are displayed thereon. Thus, a user can confirm the present recording mode by watching the display contents by the display means. This enables the user, for example, to confirm the recording mode much easier than checking the state of the operation elements such as the recording mode change- over key, etc.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording medium capable of recording image and audio information on a predetermined type of recording medium.

[0002]

2. Description of the Related Art At present, portable video cameras in which an image pickup device such as a camera and a video deck capable of recording and reproducing video and audio are integrated have been widely used. In such a video camera, image-audio recording (or image recording only of an image) for simultaneously recording an image captured by a user with a camera and audio collected by a microphone or the like at this time is, of course, for example, It is also possible to perform a voice recording for recording only the voice input from the microphone or the external voice input terminal.

[0003]

Therefore, the switching between the "audio / video recording mode" in which the audio / video recording is performed as described above and the "audio recording mode" in which only the audio is inputted and recorded can be arbitrarily operated by the user. Considering the configuration of a video camera that can be used for the first time, the following inconvenience may occur.

It is generally considered that the above-described recording mode switching function is operated by a user at a stage before recording is started, for example. Often forgetting.

[0005] For this reason, for example, although the user intends to record sound together with the captured image, he forgets to set the image and sound recording mode, and performs recording while remaining in the sound recording mode. As a result, it is conceivable that, as a result, a situation may occur in which only the audio is recorded without recording the captured image.
In such a case, since it is sufficiently conceivable that the subject photographed by the user at the time of recording cannot be obtained again thereafter, it may be quite painful for the user.

[0006] On the contrary, the user intends to record only the sound, but if the user is kept in the image and sound recording mode, as a result, not only the sound but also the sound is recorded.
Even a captured image that is unnecessary for the user is recorded. In this case, although the recording of the audio is performed, there is no loss of information required by the user, but since image data having a considerably higher data rate than the audio data is recorded, As a result, the recording capacity of the recording medium is wastefully consumed, and the economy is reduced.

[0007] The video camera is provided with a viewfinder composed of a liquid crystal display or the like. The viewfinder is provided to display a captured image as a monitor image, and the user performs shooting while checking the state of the captured image by looking at the viewfinder, for example. Here, for example, assuming that a configuration in which “image / audio recording mode” and “audio recording mode” can be switched as described above is adopted. Assuming that the monitor image in the middle is displayed, if the display is not particularly performed in the “audio recording mode”, the viewfinder may not be effectively used. Conversely, even in the “voice recording mode”,
The display panel can be effectively used if any information related to audio recording is displayed on the display panel. Also, in light of the above-described erroneous operation of switching the recording mode, some related display is performed on the viewfinder even in the “audio recording mode”, so that the user can look into the viewfinder and, for example, change the recording mode. Rather than checking the switching key or the like, it is possible to visually and easily determine which recording mode is currently set.

[0008]

SUMMARY OF THE INVENTION In view of the above-mentioned problems, the present invention provides a recording apparatus in which an image / audio recording mode and an audio recording mode are prepared. The inconvenience of obtaining a recording result that is different from the user's intention due to the recording being forgotten is prevented as much as possible. The purpose is to effectively use the display part.

Therefore, as a recording mode for recording information on a predetermined type of recording medium, a first recording mode for recording at least an input image signal as main information on a predetermined type of recording medium. A mode and a second recording mode for recording at least an input audio signal as main information are set, and any one of the first recording mode and the second recording mode is set as the recording mode. A mode selection unit for selectively selecting one of them, a display unit, and a display image obtained based on an input image signal when the first recording mode is selected by the mode selection unit. And when the second recording mode is selected, required information to be presented in relation to the recording of the input audio signal is displayed on the display means. It was possible to construct a recording apparatus and a control means for performing control.

According to the above configuration, for example, when at least the "first recording mode" for recording an image is selected, such as the "video and audio recording mode" described above, the recording is performed based on the image signal to be recorded. The display image is displayed as a monitor image. For example, when a “second recording mode” in which recording is performed mainly by voice such as “voice recording mode” is selected, information related to a voice to be recorded is displayed. Will be. In other words, the display means is used in a mode other than the recording mode for recording an image.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a recording apparatus according to an embodiment of the present invention will be described. When the recording device of the present embodiment is mounted on a portable video camera in which a camera device and a recording / reproducing device capable of recording and reproducing images (still images or moving images) and audio are integrated. Take for example. Further, the recording / reproducing device mounted on the video camera according to the present embodiment adopts a configuration for recording and reproducing data corresponding to a so-called mini disk, which is known as a kind of magneto-optical disk. The description will be made in the following order. 1. Disk format 2. 2. External configuration of video camera 3. Internal configuration of video camera 4. Configuration of media drive section 5. Example of disk structure corresponding to this embodiment 6. Display mode example corresponding to recording mode Processing operation

1. Disc Format The recording / reproducing device section mounted on the video camera of this example is assumed to be compatible with a format called MD data, which records / reproduces data in correspondence with a mini disc (magneto-optical disc). . As this MD data format, two types of formats called MD-DATA1 and MD-DATA2 have been developed, but the video camera of this example is capable of recording at higher density than MD-DATA1. It is assumed that recording and reproduction are performed in accordance with the format. So first, MD
-Disc format of DATA2 will be described.

FIGS. 1 and 2 conceptually show an example of a track structure of a disk as MD-DATA2. FIGS. 2A and 2B are a cross-sectional view and a plan view, respectively, showing an enlarged portion enclosed by a broken line A in FIG. As shown in these figures, two types of grooves (grooves) are previously formed on the disk surface: a wobbled groove WG provided with wobbles (meandering) and a non-wobbled groove NWG provided with no wobble. It is formed. The wobbled groove WG and the non-wobbled groove NWG
Exist in a double spiral on the disk so as to form a land Ld therebetween.

In the MD-DATA2 format, the land Ld is used as a track. Since the wobbled groove WG and the non-wobbled groove NWG are formed as described above, the track Tr / A is used as the track. , Tr and B are independently formed in a double spiral (double spiral) shape. The track Tr · A is a track in which the wobbled groove WG is located on the outer peripheral side of the disk and the non-wobbled groove NWG is located on the inner peripheral side of the disk. On the other hand, the track Tr · B is a track in which the wobbled groove WG is located on the inner peripheral side of the disk and the non-wobbled groove NWG is located on the outer peripheral side of the disk. In other words, it can be considered that a wobble is formed only on one side on the outer peripheral side of the disk for the track Tr.A, and a wobble is formed only on one side on the inner peripheral side of the disk for the track Tr.B. . In this case, the track pitch is the track Tr adjacent to each other.
・ It is the distance between each center of A and track Tr ・ B,
The track pitch is 0.95 μm as shown in FIG.
It has been.

Here, the wobbles formed in the groove as the wobbled groove WG are formed based on a signal in which the physical address on the disk is encoded by FM modulation + biphase modulation. Therefore, it is possible to extract the physical address on the disc by demodulating the reproduction information obtained from the wobbling given to the wobbled groove WG at the time of recording / reproduction. Further, the address information as the wobbled groove WG is commonly effective for the tracks Tr · A and Tr · B. In other words, the track Tr · A located on the inner periphery of the wobbled groove WG and the track Tr · B located on the outer periphery share the address information by the wobbling given to the wobbled groove WG. . Note that such an addressing scheme is also called an interlace addressing scheme. By adopting this interlace addressing method, for example, it is possible to reduce the track pitch while suppressing crosstalk between adjacent wobbles. For a method of recording an address by forming a wobble in a groove, A
Also called DIP (Adress In Pregroove) method.

The identification of which one of the tracks Tr.A and Tr.B sharing the same address information is being traced can be performed as follows. For example, in a state where the main beam is tracing a track (land Ld) by applying a three-beam method, the remaining two side beams trace grooves located on both sides of the track being traced by the main beam. It is possible to make it.

FIG. 2B shows a specific example in which the main beam spot SPm traces the track Tr · A. In this case, of the two side beam spots SPs1 and SPs2, the inner side beam spot SPs1 traces the non-wobbled groove NWG and the outer side beam spot S
Ps2 traces the wobbled groove WG. On the other hand, although not shown, if the main beam spot SPm traces the tracks Tr and B, the side beam spot SPs1 traces the wobbled groove WG and the side beam spot SP
s2 traces the non-wobbled groove NWG. Thus, the main beam spot SPm
Tracing the track Tr · A and the track T
In the case of tracing r · B, the grooves to be traced by the side beam spots SPs1 and SPs2 are necessarily replaced by the wobbled groove WG and the non-wobbled groove NWG.

Side beam spots SPs1, SPs2
As a detection signal obtained by the photodetector due to the reflection of light, different waveforms are obtained depending on which of the wobbled groove WG and the non-wobbled groove NWG is being traced. By determining which of the side beam spots SPs1 and SPs2 traces the wobbled groove WG (or the non-wobbled groove NWG), the main beam is moved to the tracks Tr · A,
Which of Tr and B is being traced can be identified.

FIG. 3 shows the main specifications of the MD-DATA2 format having the track structure as described above.
It is a figure shown in comparison with D-DATA1 format.
First, in the MD-DATA1 format, the track pitch is 1.6 μm and the pit length is 0.59 μm / bi.
t. The laser wavelength λ is set to 780 nm, and the aperture ratio NA of the optical head is set to 0.45. As a recording method, a groove recording method is adopted. That is, the groove is used as a track for recording and reproduction. As a method of addressing, a method of forming a groove (track) by a single spiral and using a wobbled groove in which wobbles are formed as address information on both sides of the groove is adopted.

As a modulation method of recording data, EFM (8
-14 conversion). As an error correction method, ACIRC (Advanced Cross Interleave Reed-
Solomon Code) and a convolutional data interleave. Therefore, the data redundancy is 46.3%.

In the MD-DATA1 format, a CLV (Constant Linear V) is used as a disk drive system.
erocity) is adopted, and the linear velocity of CLV is
1.2 m / s. The standard data rate during recording and reproduction is 133 kB / s, and the recording capacity is 140 MB.

On the other hand, the MD-DATA2 format which can be supported by the video camera of this embodiment has a track pitch of 0.95 μm and a pit length of 0.39 μm / b.
It can be seen that both are shorter than the MD-DATA1 format. For example, in order to realize the pit length, the laser wavelength λ = 650 nm and the aperture ratio NA of the optical head are set to 0.52, thereby narrowing the beam spot diameter at the in-focus position and expanding the band as an optical system. .

As described with reference to FIGS. 1 and 2, a land recording method is adopted as a recording method, and an interlace addressing method is adopted as an address method. As a modulation method of recording data, an RLL (1,7) method (RLL;
Run Length Limited), an RS-PC method is used as an error correction method, and a block complete type is used as data interleaving. As a result of adopting each of the above methods, the data redundancy can be suppressed to 19.7%.

Also in the MD-DATA2 format, CLV is adopted as a disk drive system, but its linear velocity is 2.0 m / s, and the standard data rate for recording / reproducing is 589 kB / s. It is said. As a result, a recording capacity of 650 MB can be obtained. Compared with the MD-DATA1 format, this means that a high-density recording of almost four times is realized. For example, assuming that a moving image is to be recorded in the MD-DATA2 format, MPEG
In the case where the compression encoding by 2 is performed, it is possible to record a moving image of 15 minutes to 17 minutes in time, depending on the bit rate of the encoded data. Also, assuming that only audio signal data is recorded, the ATR
When a compression process using AC (Adaptive Transform Acoustic Coding) 2 is performed, recording can be performed for about 10 hours.

2. 6A, 6B, and 6C are a side view, a plan view, and a rear view showing an example of the appearance of the video camera of this example. As shown in these figures, the main body 200 of the video camera of the present embodiment includes:
A camera lens 201 provided with an imaging lens and a diaphragm for taking a picture is provided so as to be exposed. A pair of left and right microphones 202 is provided. That is, in this video camera, recording of an image taken by the camera lens 201 and
It is possible to record stereo sound collected by the microphone 202.

The display unit 6 is provided on the side of the main body 200.
A, a speaker 205 and an indicator 206 are provided. The display unit 6A is a part that displays and outputs a captured image, an image reproduced by an internal recording and reproducing device, and the like. The display device actually used as the display unit 6A is not particularly limited here,
For example, a liquid crystal display or the like may be used. Also,
The display unit 6A also displays a message such as characters or characters for notifying the user of a required message in accordance with the operation of the device. Speaker 20
5 reproduces the recorded voice when reproducing the recorded voice, and also outputs a required message voice such as a beep sound. The indicator 206 emits light during a recording operation, for example, to indicate to the user that the video camera is performing a recording operation.

On the back side of the main body 200, a viewfinder 204 is provided, and during recording operation and standby, an image taken from the camera lens 201, a character image, and the like are displayed as a so-called monitor image. The user can shoot while looking at the viewfinder 204.

Further, in the present embodiment, as described later, "image / audio recording mode" and "at the time of audio recording mode" can be selectively set as the recording mode. Viewfinder 20 of the embodiment
In No. 4, various types of information related to the audio data to be recorded in the “during the audio recording mode” are displayed.

On the back side of the main body 200, a disk slot 203, a video output terminal T1, a headphone /
A line terminal T2 and an I / F terminal T3 are provided. The disk slot 203 is a slot portion for inserting or ejecting a disk as a recording medium corresponding to the video camera of this example. A video output terminal T1 for outputting a reproduced image signal or the like to an external video device;
The headphone / line terminal T2 is a terminal that outputs a reproduced audio signal to an external audio device or headphones. I
The / F terminal T3 is, for example, an input / output terminal of an interface for performing data transmission with an external data device.

Further, various parts for user operation are provided in each part of the main body 200 as described below. The main dial 300 is an operator for setting on / off of the video camera, recording operation, and reproduction operation.
When the main dial is at the "OFF" position as shown in the figure, the power is off. When the main dial is turned to the "STBY" position, the power is turned on and the recording operation is in a standby state. Further, by turning to the position of “PB”, the power is turned on and a standby state of the reproducing operation is set.

The release key 301 functions as a recording start or recording shutter operator when in a recording standby state.

A zoom key 304 is an operator for operating a zoom state (tele side to wide side) regarding image capturing. The eject key 305 is
This is an operator for ejecting the disc loaded in the inside. Play / pause key 306, stop key 307,
Search keys 308 and 309 are prepared for various operations during reproduction with respect to the disc.

In the video camera of the present embodiment,
As the recording mode, an “audio / video recording mode” and an “audio recording mode” are prepared. Recording mode switching key 30
Reference numeral 2 is provided for switching the recording mode. In this case, for example, the recording mode switching key 3
When "02" is tilted to the "AV" side, "image / audio recording mode" is selected, and when "02" is tilted to the "V" side, "audio recording mode" is selected.

The appearance of the video camera shown in FIG. 6 is merely an example, and may be changed as appropriate in accordance with the actual use conditions required for the video camera of this embodiment. Of course, various types of operation elements, operation methods, and connection terminals with external devices can be considered.

3. FIG. 4 is a block diagram showing an example of the internal configuration of the video camera of the present embodiment. The lens block 1 shown in FIG. 1 includes, for example, an optical system 11 actually including an imaging lens and a diaphragm. The camera lens 201 shown in FIG. 6 is included in the optical system 11. The lens block 1 includes a focus motor for causing the optical system 11 to perform an autofocus operation, a zoom motor for moving the zoom lens based on the operation of the zoom key 304, and the like.
Provided as

The camera block 2 is provided with a circuit for mainly converting image light captured by the lens block 1 into a digital image signal. For the CCD (Charge Coupled Device) 21 of the camera block 2,
An optical image of the subject transmitted through the optical system 11 is provided. C
In the CD 21, an image pickup signal is generated by performing photoelectric conversion on the optical image, and a sample hold / AGC (A
utomatic Gain Control) circuit 22. The sample hold / AGC circuit 22 adjusts the gain of the imaging signal output from the CCD 21 and performs waveform shaping by performing sample hold processing. The output of the sample hold / AGC circuit 2 is a video A / D
By being supplied to the converter 23, it is converted into digital image signal data.

The above CCD 21, sample hold / AG
Signal processing timing in the C circuit 22 and the video A / D converter 23 is controlled by a timing signal generated by a timing generator 24. The timing generator 24 receives a clock used for signal processing in a data processing / system control circuit 31 (in the video signal processing circuit 3) described later and generates a required timing signal based on the clock. Is done. Thereby, the signal processing timing in the camera block 2 is synchronized with the processing timing in the video signal processing unit 3. Camera controller 2
Reference numeral 5 is for performing necessary control so that each of the functional circuit units provided in the camera block 2 operates properly, and for performing autofocus, automatic exposure adjustment, aperture adjustment, zooming, and the like on the lens block 1. Is controlled. For example, in the case of auto-focus control, the camera controller 25 performs, based on focus control information obtained in accordance with a predetermined
Controls the rotation angle of the focus motor. As a result, the imaging lens is driven to be in the just-focused state.

At the time of recording, the video signal processing section 3 performs a compression process on the digital image signal supplied from the camera block 2 and the digital audio signal obtained by collecting sound by the microphone 202, and compresses the compressed data. The data is supplied to the subsequent media drive unit 4 as user recording data. In addition, at the time of recording,
When the “image / audio recording mode” is set, an image generated from the digital image signal and the character image supplied from the camera block 2 is supplied to the viewfinder drive unit 207 and displayed on the viewfinder 204. When the “audio recording mode” is set, image data is generated and the view finder is generated so that information related to audio data to be recorded is displayed on the view finder 204, as described later. It is also supplied to the drive unit 207. Further, at the time of reproduction, demodulation processing is performed on user reproduction data (data read from the disk 51) supplied from the media drive unit 4, that is, image signal data and audio signal data that have been subjected to compression processing, and these are reproduced. , And output as a reproduced audio signal.

In this example, as a compression / expansion processing method for image signal data (image data), MPEG (Moving Picture Experts Group) 2 is adopted for moving images, and JPEG (Joint Photographic) is used for still images.
Coding Experts Group). The audio signal data compression / expansion processing method includes ATR
AC (Adaptive Transform Acoustic Coding) 2 shall be adopted.

The data processing / system control circuit 31 of the video signal processing section 3 mainly performs control processing relating to compression / expansion processing of image signal data and audio signal data in the video signal processing section 3 and video signal processing section 3. Executes the process for controlling the input and output of data passing through. Further, it also generates display image data to be displayed on the viewfinder 204 and the display unit 6A, and performs signal processing for display output. The control processing for the entire video signal processing unit 3 including the data processing / system control circuit 31 is executed by the video controller 38. The video controller 38 includes, for example, a microcomputer and the like, and can communicate with the camera controller 25 of the camera block 2 and a driver controller 46 of the media drive unit 4 described later via, for example, a bus line (not shown). Have been.

As a basic operation at the time of recording in the video signal processing unit 3, image data supplied from the video A / D converter 23 of the camera block 2 is input to the data processing / system control circuit 31. The data processing / system control circuit 31 supplies the input image signal data to, for example, the motion detection circuit 35. The motion detection circuit 35 performs image processing such as motion compensation on the input image signal data while using the memory 36 as a work area, and then supplies the processed image signal data to the MPEG2 video signal processing circuit 33.

In the MPEG2 video signal processing circuit 33, for example, while using the memory 34 as a work area, the input image signal data is subjected to compression processing in accordance with the MPEG2 format, and a bit stream of compressed data as a moving image (MPEG2 Bit stream). In the MPEG2 video signal processing circuit 33, for example, when extracting image data as a still image from image signal data as a moving image and performing compression processing on the extracted image data, the compressed image data as a still image in accordance with the JPEG format is used. Is configured to generate It should be noted that JPEG was not adopted and MPEG
As compressed image data in the second format, an I picture (Intra Picture), which is regular image data, may be treated as still image data. MPEG
The image signal data (compressed image data) compressed and encoded by the two-video signal processing circuit 33 is written into the buffer memory 32 at a predetermined transfer rate and temporarily stored. In the MPEG2 format, as is well known, a so-called encoding bit rate (data rate) is used as a constant bit rate (CBR).
ate) and a variable bit rate (VBR), and the video signal processing unit 3 can cope with these.

For example, when performing image compression processing using VBR, for example, the motion detection circuit 35 performs motion detection on the image data within a range of several tens to several hundreds of frames in units of macroblocks to determine that there is motion. Then, the detection result is transmitted to the MPEG2 video signal processing circuit 33 as motion vector information. The MPEG2 video signal processing circuit 33 determines the quantization coefficient for each macroblock so as to use the required information such as the motion vector information so that the image data after compression and encoding has a certain required data rate. It is made to do.

The audio compression encoder / decoder 37 includes:
A / D converter 64 (display / image / audio input / output unit 6)
For example, the sound collected by the microphone 202 is input as digital sound signal data. The audio compression encoder / decoder 37 performs compression processing on the input audio signal data in accordance with the ATRAC2 format as described above. This compressed audio signal data is also written into the buffer memory 32 by the data processing / system control circuit 31 at a predetermined transfer rate, and is temporarily stored here.

In this embodiment, a level meter 37a is provided for the audio compression encoder / decoder 37.
Is provided. The level meter 37a is supplied to the audio compression encoder / decoder 37 and serves as a circuit part for detecting a recording level of audio data to be recorded on the disk 51 (corresponding to a level at the time of input). You. For example, the video controller 38 can refer to the level detection information in the level meter 37a.

As described above, the compressed image data and the compressed audio signal data can be stored in the buffer memory 32. The buffer memory 32 mainly absorbs a speed difference between the data transfer rate between the camera block 2 or the display / image / audio input / output unit 6 and the buffer memory 32 and the data transfer rate between the buffer memory 32 and the media drive unit 4. Has a function for Buffer memory 3
The compressed image data and the compressed audio signal data stored in 2 are read out sequentially at a predetermined timing during recording, and transmitted to the MD-DATA2 encoder / decoder 41 of the media drive unit 4. However, for example, during the reproduction, the reading of the data stored in the buffer memory 32 and the operation of recording the read data from the media drive unit 4 to the disk 51 via the deck unit 5 are performed intermittently. No problem. Such control of writing and reading data to and from the buffer memory 32 is executed by, for example, the data processing / system control circuit 31.

The operation at the time of reproduction in the video signal processing section 3 is roughly as follows. At the time of reproduction, compressed image data and compressed audio signal data (user reproduction data) read from the disk 51 and decoded according to the MD-DATA2 format by the processing of the MD-DATA2 encoder / decoder 41 (in the media drive unit 4) Data processing / system control circuit 31
Will be transmitted. The data processing / system control circuit 31 temporarily stores the input compressed image data and compressed audio signal data in the buffer memory 32, for example. Then, the compressed image data and the compressed audio signal data are read from the buffer memory 32 at a required timing and at a transfer rate at which the reproduction time axis can be matched.
The compressed audio signal data is supplied to the video signal processing circuit 33, and the compressed audio signal data is supplied to the audio compression encoder / decoder 37.

In the MPEG2 video signal processing circuit 33,
Decompresses the input compressed image data,
It is transmitted to the data processing / system control circuit 31. In the data processing / system control circuit 31,
The expanded image signal data is supplied to the video D / A converter 61 (in the display / image / audio input / output unit 6). The audio compression encoder / decoder 37 performs an expansion process on the input compressed audio signal data,
/ A converter 65 (in display / image / audio input / output unit 6)
To supply.

In the display / image / audio input / output unit 6,
The image signal data input to the video D / A converter 61 is converted into an analog image signal here, and is branched and input to the display controller 62 and the composite signal processing circuit 63. The display controller 62 drives the display unit 6A based on the input image signal. As a result, a reproduced image is displayed on the display unit 6A. Further, in the display unit 6A, not only an image obtained by reproducing from the disk 51 but also a captured image obtained by photographing with a camera part composed of the lens block 1 and the camera block 2 as a matter of course. It is possible to display and output a monitor image almost in real time. Further, in addition to the reproduced image and the captured image, as described above, a message display such as a character or a character for notifying the user of a required message in accordance with the operation of the device is also performed. Such a message display is output to the video D / A converter 61 in the data processing / system control circuit 31 so that required characters, characters, and the like are displayed at predetermined positions under the control of the video controller 38, for example. Processing for synthesizing required image signal data with image signal data of required characters, characters, or the like may be performed. Therefore, the data processing / system control circuit 31
Includes a signal processing circuit including an on-screen display function.

The composite signal processing circuit 63 converts the analog image signal supplied from the video D / A converter 61 into a composite signal and outputs the composite signal to the video output terminal T1. For example, if a connection is made to an external monitor device or the like via the video output terminal T1, an image reproduced by the video camera can be displayed on the external monitor device.

In the display / image / audio input / output section 6, the audio signal data input from the audio compression encoder / decoder 37 to the D / A converter 65 is converted into an analog audio signal here, and the signals are supplied to a headphone / line terminal. T
2 is output. In addition, the analog audio signal output from the D / A converter 65 is also branched and output to the speaker SP via the amplifier 66, whereby the reproduced audio and the like are output from the speaker SP. Become.

The media drive section 4 mainly encodes the recording data in accordance with the MD-DATA2 format so as to conform to the disc recording and transmits the encoded data to the deck section 5 at the time of recording. By performing decoding processing on the read data, reproduced data is obtained and transmitted to the video signal processing unit 3.

The MD-DAT of the media drive unit 4
When recording, the A2 encoder / decoder 41
Recording data (compressed image data + compressed audio signal data) is input from the data processing / system control circuit 31, the recording data is subjected to a predetermined encoding process in accordance with the MD-DATA2 format, and the encoded data is temporarily stored. The data is stored in the buffer memory 42. Then, the data is transmitted to the deck unit 5 while being read at a required timing.

At the time of reproduction, the digital reproduction signal read from the disk 51 and input via the RF signal processing circuit 44 and the binarization circuit 43 is subjected to MD-DAT.
A decoding process according to the A2 format is performed, and the data is transmitted to the data processing / system control circuit 31 of the video signal processing unit 3 as reproduction data. Also at this time, if necessary, the reproduced data is temporarily stored in the buffer memory 42, and the data read therefrom at a required timing is transmitted to the data processing / system control circuit 31 for output. Such writing / reading control for the buffer memory 42 is performed by the driver controller 46. Note that, for example, when the servo is disengaged due to disturbance or the like during reproduction of the disk 51 and reading of a signal from the disk becomes impossible, the read data is stored in the buffer memory 42 during the period during which the read data is accumulated. If the reproduction operation for the disc is resumed, the chronological continuity as the reproduction data can be maintained.

The RF signal processing circuit 44 includes a disk 51
By performing the required processing on the read signal from
For example, it generates an RF signal as reproduction data, a servo control signal such as a focus error signal and a tracking error signal for servo control of the deck unit 5, and the like. RF
The signal is binarized by the binarization circuit 43 as described above, and input to the MD-DATA2 encoder / decoder 41 as digital signal data. The generated various servo control signals are supplied to the servo circuit 45. In the servo circuit 45, based on the input servo control signal,
The required servo control in the deck section 5 is executed.

In this example, MD-DATA1
An encoder / decoder 47 corresponding to the format is provided. The encoder / decoder 47 encodes the recording data supplied from the video signal processing unit 3 in accordance with the MD-DATA1 format and records the encoded data on the disk 51. It is also possible to perform decoding processing on data encoded in accordance with the MD-DATA1 format, and transmit and output it to the video signal processing unit 3. That is, as the video camera of this example, the MD-DATA2 format and the MD-DATA2 format are used.
It is configured to obtain compatibility with the DATA1 format. The driver controller 46 is a functional circuit unit for controlling the media drive unit 4 as a whole.

The deck section 5 is a part comprising a mechanism for driving the disk 51. Although not shown here, in the deck section 5, the disk 5 to be loaded is
1 is detachable and has a mechanism (disc slot 203 (see FIG. 6)) that can be replaced by a user's work. Further, it is assumed that the disk 51 here is a magneto-optical disk corresponding to the MD-DATA2 format or the MD-DATA1 format.

In the deck section 5, a spindle motor 5 for rotating the loaded disk 51 by CLV is used.
2 is driven to rotate by the CLV. The optical head 53 irradiates the disk 51 with laser light during recording / reproduction. The optical head 53 performs high-level laser output for heating the recording track to the Curie temperature during recording, and performs relatively low-level laser output for detecting data from reflected light by the magnetic Kerr effect during reproduction. . Therefore, the optical head 53
Although not shown in detail here, a laser diode as a laser output unit, an optical system including a polarizing beam splitter and an objective lens, and a detector for detecting reflected light are mounted. The objective lens provided in the optical head 53 is held by a biaxial mechanism so as to be displaceable in a radial direction of the disk and in a direction of coming and coming from the disk.

The optical head 5 with the disk 51 interposed
A magnetic head 54 is arranged at a position facing 3. The magnetic head 54 performs an operation of applying a magnetic field modulated by recording data to the disk 51. Although not shown, the thread motor 55
And a thread mechanism driven by the thread mechanism. By driving the sled mechanism, the entire optical head 53 and the magnetic head 54 can be moved in the disk radial direction.

The operation unit 7 is provided with each of the operation elements 300 to 300 shown in FIG.
302, 304 to 309, and the like, and various operation information of the user by these operators are supplied to, for example, the video controller 38. The video controller 38 supplies, to the camera controller 25 and the driver controller 46, operation information and control information for causing each unit to execute necessary operations according to a user operation.

The external interface 8 is provided so that data can be transmitted between the video camera and the external device. For example, the external interface 8 is provided between the I / F terminal T3 and the video signal processing unit as shown in FIG. Can be The external interface 8 is not particularly limited here, but may be, for example, IEEE 1394 or the like. For example, when an external digital imaging device and the video camera of this embodiment are connected via the I / F terminal T3, it becomes possible to record an image (audio) captured by the video camera on the external digital imaging device. . In addition, image (sound) data reproduced by an external digital image device or the like is captured via the external interface 8 so that MD-
It is also possible to record on the disk 51 in accordance with the DATA2 (or MD-DATA1) format.

The power supply block 9 supplies a required level of power supply voltage to each functional circuit unit using a DC power supply obtained from a built-in battery or a DC power supply generated from a commercial AC power supply. On / off of the main power supply by the power supply block 9 is controlled by the video controller 38 in accordance with the operation of the main dial 300 described above.

4. Configuration of Media Drive Unit Next, as the configuration of the media drive unit 4 shown in FIG. 4, a detailed configuration in which a functional circuit unit corresponding to MD-DATA2 is extracted will be described with reference to the block diagram of FIG. In FIG. 5, the deck unit 5 is shown together with the media drive unit 4. However, since the internal configuration of the deck unit 5 has been described with reference to FIG. 4, the same reference numerals as in FIG. I do. In the media drive unit 4 shown in FIG. 5, the same reference numerals are given to the ranges corresponding to the blocks in FIG.

Information detected by data reading operation of the optical head 53 from the disk 51 (photocurrent obtained by detecting laser reflected light by a photodetector)
Is supplied to the RF amplifier 101 in the RF signal processing circuit 44. The RF amplifier 101 generates a reproduction RF signal as a reproduction signal from the input detection information and supplies the reproduction RF signal to the binarization circuit 43. The binarization circuit 43 binarizes the input reproduction RF signal to obtain a digital reproduction RF signal (binary RF signal). This binarized RF signal is supplied to the MD-DATA2 encoder / decoder 41, and first, the AGC / clamp circuit 103
Are input to the equalizer / PLL circuit 104 after gain adjustment, clamp processing, and the like have been performed. The equalizer / PLL circuit 104 performs an equalizing process on the input binary RF signal, and
5 is output. In addition, binarization R after equalizing processing
By inputting the F signal to the PLL circuit, the binarized RF
Clock C synchronized with signal (RLL (1,7) code string)
Extract LK.

The frequency of the clock CLK corresponds to the current disk rotation speed. Therefore, the CLV processor 11
1, the clock C is output from the equalizer / PLL circuit 104.
LK is input, error information is obtained by comparing with a reference value corresponding to a predetermined CLV speed (see FIG. 3), and this error information is used as a signal component for generating a spindle error signal SPE. Further, the clock CLK includes, for example, the RLL (1, 7) demodulation circuit 106 and the like.
It is used as a clock for processing in a required signal processing circuit system.

The Viterbi decoder 105 has an equalizer / P
The binary RF signal input from the LL circuit 104 is subjected to a decoding process according to a so-called Viterbi decoding method. As a result, reproduced data as an RLL (1, 7) code string is obtained. This reproduced data is RLL (1,
7) The signal is input to the demodulation circuit 106, where RLL (1,
7) The data stream is subjected to demodulation.

The data stream obtained by the demodulation processing in the RLL (1, 7) demodulation circuit 106 is written to the buffer memory 42 via the data bus 114, and is developed on the buffer memory 42. The data stream expanded on the buffer memory 42 in this manner is first subjected to error correction processing in error correction block units according to the RS-PC system by the ECC processing circuit 116, and further descramble / E
The DC decoding circuit 117 performs a descrambling process and an EDC decoding process (error detection process). The data processed so far is the reproduction data DA
TAp. The reproduction data DATAp is transmitted at a transfer rate according to the transfer clock generated by the transfer clock generation circuit 121, for example, from the descrambling / EDC decoding circuit 117 to the data processing / processing of the video signal processing unit 3.
The data is transmitted to the system control circuit 31.

The transfer clock generation circuit 121 is, for example,
When a crystal clock is used for data transmission between the media drive unit 4 and the video signal processing unit 3 and data transmission between functional circuit units in the media drive unit 4,
It is a part for generating a transfer clock (data transfer rate) having a frequency appropriately determined. In addition, an operation clock having a required frequency to be supplied to each functional circuit unit of the media drive unit 4 and the video signal processing unit 3 is generated according to the operation state of the video camera.

The detection information (photocurrent) read from the disk 51 by the optical head 53 is transmitted to the matrix amplifier 1
07 is also supplied. The matrix amplifier 107 performs required arithmetic processing on the input detection information, thereby obtaining a tracking error signal TE, a focus error signal FE, and groove information (absolute address information recorded as a wobbled groove WG on the disk 51) GFM. Are supplied to the servo circuit 45. That is, the extracted tracking error signal TE and focus error signal FE are supplied to the servo processor 112, and the groove information GFM is stored in the ADIP bandpass filter 108.
Supplied to

The groove information GFM band-limited by the ADIP band-pass filter 108 is supplied to an A / B track detection circuit 109, an ADIP decoder 110, and a CLV.
It is supplied to the processor 111. In the A / B track detecting circuit 109, based on the input groove information GFM, for example, the track currently being traced is determined based on the method described with reference to FIG.
A, TR or B is determined, and the track determination information is transmitted to the driver controller 46.
Output to The ADIP decoder 110 decodes the input groove information GFM to extract an ADIP signal, which is absolute address information on the disk, and outputs the signal to the driver controller 46. The driver controller 46 executes necessary control processing based on the track identification information and the ADIP signal.

The CLV processor 111 receives the clock CLK from the equalizer / PLL circuit 104 and the groove information GFM via the ADIP bandpass filter 108. The CLV processor 111 generates a spindle error signal SPE for CLV servo control based on, for example, an error signal obtained by integrating a phase error between the groove information GFM and the clock CLK, and outputs the spindle error signal SPE to the servo processor 112. The required operation to be executed by the CLV processor 111 is controlled by the driver controller 46.

The servo processor 112 performs various servo control signals based on the tracking error signal TE, the focus error signal FE, the spindle error signal SPE, the track jump command and the access command from the driver controller 46, and the like. (A tracking control signal, a focus control signal, a thread control signal, a spindle control signal, and the like) are generated and output to the servo driver 113. In the servo driver 113,
A required servo drive signal is generated based on the servo control signal supplied from the servo processor 112. Here, the servo drive signal includes a two-axis drive signal (two types of focus direction and tracking direction) for driving the two-axis mechanism, a sled motor drive signal for driving the sled mechanism, and a spindle motor drive signal for driving the spindle motor 52. Becomes By supplying such a servo drive signal to the deck section 5, focus control and tracking control on the disk 51 and CLV control on the spindle motor 52 are performed.

When the recording operation is performed on the disk 51, for example, the data processing /
Scramble / ED from system control circuit 31
The recording data DATAR for the C encoding circuit 115
Will be input. This user record data DAT
Ar is input in synchronization with, for example, a transfer clock generated by the transfer clock generation circuit 121.

Scramble / EDC encoding circuit 11
In step 5, for example, the recording data DATAR is written into the buffer memory 42 and developed,
DC encoding processing (addition processing of an error detection code by a predetermined method) is performed. After this processing, for example, the ECC processing circuit 116 adds an error correction code according to the RS-PC method to the recording data DATAR developed in the buffer memory 42. The recording data DATAR that has been processed up to this point is read from the buffer memory 42 and transmitted to the RL via the data bus 114.
The signal is supplied to the L (1, 7) modulation circuit 118.

In the RLL (1, 7) modulation circuit 118, RLL (1, 7) is applied to the input recording data DATAR.
7) A modulation process is performed, and the recording data as the RLL (1, 7) code string is output to the magnetic head drive circuit 119.

Incidentally, the MD-DATA2 format employs a so-called laser strobe magnetic field modulation system as a recording system for a disk. The laser strobe magnetic field modulation method refers to a recording method in which a magnetic field modulated by recording data is applied to a recording surface of a disk, and a laser beam to be irradiated on the disk is pulsed in synchronization with the recording data. In such a laser strobe magnetic field modulation method, the process of forming a pit edge recorded on a disk does not depend on transient characteristics such as the reversal speed of a magnetic field, but is determined by the laser pulse irradiation timing. For this reason, the laser strobe magnetic field modulation method is compared with, for example, a simple magnetic field modulation method (a method in which a laser beam is constantly irradiated onto a disk and a magnetic field modulated by recording data is applied to a disk recording surface). In this case, it is possible to make the jitter of the recording pit extremely small. That is, the laser strobe magnetic field modulation method is a recording method advantageous for high-density recording.

The magnetic head drive circuit 119 of the media drive unit 4 operates so that a magnetic field modulated by the input recording data is applied from the magnetic head 54 to the disk 51. Further, the RLL (1, 7) modulation circuit 118 outputs a clock synchronized with the recording data to the laser driver 120. The laser driver 120 controls the optical head 5 so that the disk is irradiated with a laser pulse synchronized with recording data generated as a magnetic field by the magnetic head 54 based on the input clock.
The third laser diode is driven. At this time, the laser pulse emitted and output from the laser diode is based on a required laser power suitable for recording. In this way, the recording operation as the laser strobe magnetic field modulation method is enabled by the media drive unit 4 of the present embodiment.

5. Next, a description will be given of an example of the structure of a disk 51 according to the present embodiment. FIG. 7 conceptually shows an example of an area structure of a disk 51 which is assumed to correspond to the present embodiment. Note that the physical format of the disk 51 shown in this figure is as described above with reference to FIGS.

As shown in FIG. 7, in the magneto-optical recording area where the magneto-optical recording and reproduction can be performed as the disk 51, a management area is first provided for a section of a predetermined size at the innermost circumference. This management area is, for example, U
Required management information called TOC (user TOC), which is required for management of recording and reproduction of data recorded on the disc, is mainly recorded. For example, in the case of this example, management information for performing recording and reproduction on a file basis as data recorded on the disc, character information indicating a file name given to these files,
And character information indicating a disc name given to the disc itself. The contents of the U-TOC in the management area are sequentially rewritten in accordance with, for example, the history of files recorded on the disk and the result of editing processing such as file deletion.

A data area is provided on the outer peripheral side of the management area. For this data area, for example, image data (including audio data) recorded by the user
Etc. are recorded. The data recorded in the data area is recorded in a form managed on a file basis. The recording and reproduction of data for each file is managed based on the U-TOC stored in the management area as described above.

The U-TOC of this management area is, for example,
The data is read out when the disc is loaded, and is stored in a predetermined area of the buffer memory 42 of the media drive unit 4 (or the buffer memory 32 of the video signal processing unit 3), for example. Then, at the time of data recording or editing, the U-TOC stored in the buffer memory is rewritten according to the recording result or the editing result, and then, at a predetermined opportunity and timing, the U-TOC is rewritten to the buffer memory. The U-TOC of the disk 51 is rewritten (updated) based on the contents of the held U-TOC.

Note that the example of the disk structure shown in this figure is merely an example, and the physical positional relationship of each area in the disk radial direction may be changed according to the actual use conditions and the like. Further, if necessary, an area for storing another predetermined type of data may be additionally provided.

6. Example of Display Form Corresponding to Recording Mode In the video camera having the above-described configuration, an “audio / video recording mode” and an “audio recording mode” can be set as recording modes for recording data on a disc.
The “image / audio recording mode” is a mode in which the captured image captured by the lens block 1 and the audio collected by the microphone 202 (or image data / audio signal data obtained via the external interface 8) are The "audio recording mode" is a mode in which only the sound picked up by the microphone 202 or the audio signal data input via the external interface 8) is recorded on the disk 51 at the same time. You.

Switching of the recording mode (selection setting)
The user operates the recording mode switching key 302 as described above.
Is performed by operating.

In the present embodiment, first, when the “audio / video recording mode” is set, the display screen of the viewfinder 204 is displayed as shown in FIG. An image captured or externally input as a recording target is displayed as a monitor image. Actually, a character image or the like that presents required information according to the current operation state of the device may be displayed together with the monitor image.

On the other hand, when the “voice recording mode” is set, the viewfinder 2 shown in FIG.
As shown on a display screen 04, related information about the currently input audio data to be recorded is displayed.

In this case, the display screen of FIG. 8B shows a disc name display indicating the disc name given to the currently loaded disc 51 from the top of the display screen of the viewfinder 204. DP1 is displayed, and a file name (for example, if the audio data to be recorded is a song, the name of the song may be used) given below the DP1 is displayed. The displayed file name display DP2 is displayed. Below that, a level meter display DP3 indicating the recording level of the input audio data is displayed. For example, although not shown in FIG. 6, a recording level adjustment key or the like for adjusting the recording level of the audio data is provided, and the recording level of the audio data to be recorded from this becomes appropriate while the user looks at the level meter display DP3. It is possible to configure so that it can be adjusted.

The display form shown in FIG. 8 is merely an example, and the present invention is not limited to this. In particular, various display contents and display modes corresponding to the “voice recording mode” shown in FIG. 8B are conceivable.

Thus, the view finder 204
Is displayed, first, the user simply looks at the content displayed on the viewfinder 204, and the current recording mode is set to either the “image / audio recording mode” or the “audio recording mode”. You can check immediately if there is. For example, when recording an image captured by the user, that is, when the user himself intends to perform recording in the “video / audio recording mode”, the user almost always checks the monitor image with the viewfinder 204.
Is what you see. Therefore, for example, if the user intends to perform recording in the “audio / video recording mode” and the recording mode switching key 302 is in the “audio recording mode”, then the viewfinder 20
Since the display as shown in FIG. 8B is performed for No. 4, the user can immediately recognize that the “voice recording mode” is set. Thereafter, for example, the user has to perform an operation of selecting “image / audio recording mode” by using the recording mode switching key 302 to reset the recording mode.

Conversely, if the user intends to perform recording in the “audio recording mode” and the recording mode switching key 302 is in the “image / audio recording mode”, When the finder 204 is viewed, the monitor image is displayed as shown in FIG. 8A, so that the user can easily recognize that the current mode is the "audio and video recording mode".

The viewfinder 204 is originally
Since it is provided to display a monitor image (and a required character image or the like) for monitoring a captured image, in a general idea, for example, in the “voice recording mode”, nothing is displayed on the viewfinder 204. It will not be displayed. On the other hand, in the “sound recording mode” as in the present embodiment, by displaying the information on the sound data to be recorded so as to be presented, the monitor image originally at the time of recording is originally displayed. Can be effectively used even in the “voice recording mode”.

7. Processing Operation Next, a processing operation for realizing a display according to the recording mode as shown in FIG. 8 will be described with reference to a flowchart of FIG. It should be noted that the processing shown in this figure is mainly based on the overall control executed by the video controller 38, and the data processing / system control circuit 31 mainly performs the required signal processing and the required functional circuits in the video signal processing unit 3. This is realized by executing control on the units and display control for displaying on the viewfinder 204.

In the processing shown in FIG. 9, for example, when the main dial 300 is at the “STBY” position and the recording operation is in the standby state (or during the recording operation), first in step S101, the current recording mode is set. Is determined as to which of the “audio and video recording mode” and the “audio recording mode” is set.
That is, it is determined whether the recording mode switching key 302 has been switched to either the “image / audio recording mode” or the “audio recording mode”.

If it is determined in step S101 that the "audio recording mode" has been set, the process proceeds to step S102 and the subsequent steps to cope with the "audio recording mode" as shown in FIG. Then, the processing shifts to the control processing for performing the display.

In step S102, data is read from the U-TOC in order to obtain necessary information necessary for performing a display corresponding to the "voice recording mode". At this time, the U-TOC recorded in the management area of the disk 51 has been read from the disk 51 and held in the buffer memory 42 as described above. Therefore, in the above step S102, necessary information is read from the U-TOC on the buffer memory 42 and stored as data for display image generation in the buffer memory 32 in the video signal processing unit 3, for example. Is done. For example, if the display of FIG. 8B is realized, at this time, the character information of the disc name and the character information of the file name are read from the U-TOC.

In the following step S103,
The video controller 38 refers to the current level detection information in the level meter 37a. That is, the recording level of the currently input audio data is referred to.

Then, in the next step S104,
Display image data is generated based on the U-TOC information read in step S102 and the recording level referred to in step S103.
In this case, the data processing / system control circuit 3
1 to generate display data based on character information and display data for displaying a level meter based on an actual recording level by an on-screen display function provided in the signal processing system in 1. These are mapped to an image data area as a display area of one screen. In the process of generating such display image data, for example, the buffer memory 32 is used as a work area.

In step S105, the above step S1
By supplying the display image data generated in step S04 to the viewfinder drive unit 207, the display corresponding to the “audio recording mode” as shown in FIG. 8B is performed in the viewfinder 204. .

On the other hand, if it is determined in step S101 that the "audio / video recording mode" has been set, the process proceeds to step S106. In step S106, for the captured image data transmitted from the lens block 2 to the video signal processing unit 3, for example, the data processing / system control circuit 3
1 is generated as display image data to be displayed on the viewfinder 204 by the signal processing controlled by the control unit 1.
Then, in step S107, the display image data is supplied to the viewfinder drive unit 207, so that the monitor image as shown in FIG.

With the configuration shown in FIG. 4, the display for each recording mode shown in FIG. 8 can be performed on the display section 6A.

In the above-described embodiment, the video camera provided with the recording / reproducing device for recording / reproducing the data corresponding to the disk is taken as an example. However, the present invention is not limited to this. The present invention is also applicable to a video camera equipped with a video deck. Further, in the above-described embodiment, a case has been described in which a configuration in which a captured image as a moving image and sound can be recorded is employed. For example, the video camera of the present It is also possible to record still image data as an image. For example, as an image / audio recording mode, compressed still image data as a captured image and audio collected before and after this time are compressed audio signal data. It is also possible to obtain an operation of recording as.

The recording mode switching and the recording operation according to the present invention may be applied to, for example, a recording apparatus that exclusively performs recording without a reproduction function. .

Further, in the present embodiment, the description has been made assuming that the MPEG2 system is employed for compressing moving image data. However, for example, a system capable of compressing and encoding other moving image data may be employed. . Also, the compression method for still image data and audio data need not be particularly limited to those exemplified as the present embodiment (JPEG, ATRAC2, etc.).

[0104]

As described above, the present invention is based on the image signal to be recorded when at least the "first recording mode" for recording mainly by the image is selected, such as the "image / audio recording mode". The display image is displayed on the display means as a monitor image, and when the "second recording mode" in which only the audio is recorded, such as the "audio recording mode", is selected. Is displayed on the display means.

Thus, the user can confirm the current recording mode by looking at the display contents on the display means. This can be confirmed much more easily than, for example, the state of an operation element such as a recording mode switching key.

Therefore, for example, specifically, although the user intends to record only the sound, the image is actually recorded together with the sound by setting the “image and sound recording mode”. There is a high possibility that an erroneous operation will not be performed. In this case, by avoiding recording of image data having a considerably large data amount with respect to the audio data, an accident that wastes the recording capacity of the disc without noticing it and prevents it from being wasted as much as possible. It will come off.

On the contrary, although the user intends to record an image and a sound, there is a possibility that an erroneous operation in which only the sound is actually recorded due to the setting of the “sound recording mode” may occur. It becomes extremely low, and for example, an accident that fails to record an image taken by the user can be avoided as much as possible.

In particular, when the display means is, for example, a viewfinder or the like, the user almost always tries to view the monitor image of the viewfinder during data recording such as photographing. The probability of noticing is even higher.

In the present invention, for example, a display means such as a view finder for displaying a monitor image of an image to be recorded is provided with a recording level, character information such as a disc name and a file name, and the like. By displaying information related to the audio data, the information necessary for the user is presented even in the “audio recording mode”, so that the display unit can be effectively used. ing.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing a track structure of a disc corresponding to a video camera according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram showing a track portion of a disc corresponding to the video camera of the embodiment in an enlarged manner.

FIG. 3 is an explanatory diagram showing specifications of a disc corresponding to the video camera of the embodiment.

FIG. 4 is a block diagram of an internal configuration of the video camera according to the embodiment.

FIG. 5 is a block diagram of an internal configuration of a media drive unit of the video camera according to the embodiment.

FIG. 6 is a side view, a plan view, and the like of the video camera according to the embodiment;
And a rear view.

FIG. 7 is a conceptual diagram showing an example of a disk structure according to the embodiment.

FIG. 8 is an explanatory diagram showing a display mode example in a view finder according to a recording mode as an embodiment.

FIG. 9 is a flowchart showing a processing operation for realizing display of a viewfinder according to a recording mode.

[Description of Signs] 1 lens block, 2 camera block, 3 video signal processing section, 4 media drive section, 5 deck section,
6 display / image / audio input / output unit, 6A display unit, 7 operation unit, 8 external interface, 9 power supply block,
Reference Signs List 11 optical system, 12 motor unit, 22 sample hold / AGC circuit, 23 A / D converter, 24 timing generator, 25 camera controller, 31
Data processing / system control circuit, 32 buffer memory, 33 video signal processing circuit, 34 memory, 35 motion detection circuit, 36 memory, 37 audio compression encoder / decoder, 38 video controller,
41 MD-DATA2 encoder / decoder, 42
Buffer memory, 43 binarization circuit, 44 RF signal processing circuit, 45 servo circuit, 46 driver controller, 51 disk, 52 spindle motor, 53
Optical head, 54 magnetic head, 55 thread motor, 61 video D / A converter, 62 display controller, 63 composite signal processing circuit, 64 A /
D converter, 65 D / A converter, 66 amplifier, 101 RF amplifier, 103 AGC / clamp circuit, 104 equalizer / PLL circuit, 105 Viterbi decoder, 106 RLL (1, 7) demodulation circuit, 107
Matrix amplifier, 108 ADIP bandpass filter, 109 A / B track detection circuit, 110 ADI
P decoder, 111 CLV processor, 112 servo processor, 113 servo driver, 114 data bus, 115 scramble / EDC encode circuit, 116 ECC processing circuit, 117 descramble / EDC decode circuit, 118 RLL (1, 7) modulation circuit, 119 Magnetic head drive circuit, 120 laser driver, 121 transfer clock generation circuit, 201 camera lens, 202 microphone, 203 disk slot, 204 viewfinder, 205 speaker, 3
00 main dial, 301 release key, 302
Recording mode switch key, 304 zoom key, 305 eject key, 306 play key, 307 stop key, 3
08,309 Search key, Ld land, NWG non-wobbled groove, WG wobbled groove, T
r ・ A 、 Tr ・ B Truck

Claims (3)

[Claims] 1. A first recording mode for recording at least an input image signal as main information on a predetermined type of recording medium as a recording mode for recording information on a predetermined type of recording medium. And a second recording mode for recording at least the input audio signal as the main information, and the recording modes of the first recording mode and the second recording mode are set as the recording modes. A mode selection unit for selecting one of them, a display unit, and a display image obtained based on the input image signal when the first recording mode is selected by the mode selection unit. Is displayed on the display means, and when the second recording mode is selected by the mode selection means, the place to be presented in relation to the recording of the input audio signal is to be presented. And a control means for performing control so that necessary information is displayed on the display means. 2. The recording apparatus according to claim 1, wherein said display means is provided as a view finder in said recording apparatus. 3. The control means, when the second recording mode is selected by the mode selection means, as required information to be presented in relation to recording of the input audio signal, 2. The apparatus according to claim 1, wherein at least one of a recording level of the input audio signal and character information provided in relation to the input audio signal is displayed.
The recording device according to claim 1.