JP2000236466A - Recording device and reproducing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve entertainment and handleability concerning editing by recording sensor information obtained by a sensor information input means at the time of recording picture information in a recording medium. SOLUTION: A video signal processing part 3 gives compressing processing with respect to video signal, voice data, e.g. and divides compressed picture data and compressed voice data of the same time by the unit of a packet to write into a buffer memory 32 under the control of a data processing/system control circuit 31. Processing for fetching (writing) sensor data inputted at the same time of fetched compressed picture data and compressed voice data in the memory 32 is executed. Then, fetched compressed picture data, compressed voice data and sensor data are generated as one packet of data. Then, control processing for writing the obtained packet in a disk is executed. Thus, picked up image, sound absorbing voice and sensor data are recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention
The present invention relates to a recording device capable of performing reproduction and a reproducing device.

[0002]

2. Description of the Related Art Video camera devices in which a camera device and a VTR are integrated are widely used. In such a video camera, a captured image captured by a user and sound collected by a user can be recorded, and an image / sound recorded on a recording medium can be reproduced.

[0003] It is often the case that a user edits an image / sound recorded by a video camera apparatus to make the work more entertaining, rather than simply reproducing the image / sound.

For example, as such editing, it is conceivable to impose (synthesize) a reproduced image as an image using additional information other than some image / sound obtained at the time of recording. In performing such editing, generally, an editing device such as a personal computer is separately used. For example, a user records image / audio information on a recording medium using a video camera. Further, additional information of a predetermined content related thereto is recorded and stored by another device. And when editing,
For example, using a predetermined application software, the information recorded by the video camera and the separately stored additional information are taken into a personal computer.
Then, on the personal computer, an editing operation such as combining additional information as an image is performed on the recorded image.

[0005]

However, some video camera users do not have editing equipment such as a personal computer. Have difficulty.

[0006] Even if the user owns the editing equipment, the above-described editing work is not necessarily general because a relatively sophisticated and complicated work is required. Further, the above-mentioned editing work must be performed at a certain opportunity after recording, and thus lacks real-time properties as editing.

[0007]

SUMMARY OF THE INVENTION In view of the above-mentioned problems, the present invention provides a simpler and more real-time editing method for, for example, a video camera or the like that reflects additional information other than image / audio on a recording source. It is an object of the present invention to improve the entertainment and usability related to editing in such an environment.

[0008] For this purpose, an image pickup means for obtaining a picked-up image, a sensor information input means for detecting a predetermined object to be detected and inputting sensor information detected by a sensor means separate from the recording apparatus. After the image information obtained based on the captured image can be recorded on a predetermined recording medium, the sensor information obtained by the sensor information input means at the time of recording the image information can be recorded on the recording medium. The recording device is configured to include the recording unit.

[0009] The reproducing apparatus is configured as follows. The present invention is a playback device that performs playback corresponding to a recording medium in which a captured image is recorded as image information and sensor information input from an external sensor unit that detects a predetermined state at the time of recording is recorded. You. And
Data reading means for reading at least image information and the sensor information from a recording medium; reproducing output means for generating and outputting display image information from at least the image information read by the data reading means; A sensor image generating means for generating sensor image information for visually expressing the sensor information based on the sensor information read by the means; and a reproduction output means for detecting the image information read by the data reading means. Data reading means, the sensor image generating means, and reproduction control means capable of controlling each operation of the reproduction output means are provided so that display image information obtained by synthesizing the image information is output.

According to the above configuration, at the time of recording a picked-up image, sensor information detected by an external sensor means at this time can be recorded on a recording medium. That is, it is possible to record sensor information (that is, additional information) that can be an editing material together with a captured image on the same recording medium. When the recording medium on which the captured image and the sensor information are recorded is reproduced as described above,
It becomes possible to synthesize a sensor image that visually indicates sensor information with a captured image and output the display image as a display image.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an image processing apparatus according to an embodiment of the present invention will be described. As the recording device / reproducing device of this example, a camera device and an image (still image or moving image)
An example is given in which a portable video camera integrated with a recording / reproducing device capable of recording and reproducing audio is mounted. Further, the recording / reproducing device section mounted on the video camera of 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 Editing example using sensor unit 6-1. Usage example of sensor unit 6-2. Display example of edited image 6-3. Processing operation (at the time of recording) 6-4. Processing operation (during playback) Modified example

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 wobbles are formed only on one side of the outer circumference of the disk with respect to the track Tr · A, and wobbles are formed only on one side of the inner circumference of the disk with respect to 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 a physical address on the disk is encoded by FM modulation + biphase modulation. For this reason, it is possible to extract the physical address on the disk 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. . Such an addressing method is also called an interlace addressing method. By adopting this interlace addressing method, for example, it is possible to reduce the track pitch while suppressing crosstalk between adjacent wobbles. Also, regarding 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 of the tracks Tr.A and Tr.B sharing the same address information is being traced as described above 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 on which the main beam is tracing. It is possible to make it.

FIG. 2B shows, as a specific example, a state 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 rB, 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 as address information are formed on both sides of the groove is adopted.

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), 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, in the MD-DATA2 format which can be supported by the video camera of this embodiment, the track pitch is 0.95 μm and the pit length is 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 the optical system. .

As described with reference to FIGS. 1 and 2, a land recording method is employed as a recording method, and an interlace addressing method is employed as an address method. As a modulation method of recording data, an RLL (1, 7) method (RLL;
Run Length Limited), the RS-PC method is used as an error correction method, and the 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 about four times is realized. For example, assuming that a moving image is recorded in the MD-DATA2 format, the moving image
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, depending on the bit rate of the encoded data. Also, assuming that only the 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 the present 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 is lit, for example, during a recording operation, and indicates to the user that the video camera is performing a recording operation.

A viewfinder 204 is provided on the back side of the main body 200, and displays an image taken from the camera lens 201, a character image, and the like during a recording operation and a standby state. The user can shoot while looking at the viewfinder 204. Further, the disc slot 203, the video output terminal T
1. A headphone / line terminal T2 and an I / F terminal T3 are provided. The disc slot 203 is a slot portion for inserting or ejecting a disc as a recording medium corresponding to the video camera of the present embodiment. The video output terminal T1 is a terminal for outputting a reproduced image signal or the like to an external video device, and the headphone / line terminal T2 is a terminal for outputting a reproduced audio signal to an external audio device or headphones. The I / F terminal T3 is, for example, an input / output terminal of an interface for performing data transmission with an external data device.

Further, various controls for user operation are provided in each part of the main body 200. Hereinafter, the main operators will be described. Main dial 300
Are operators 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. In addition, "P
By turning to the position "B", the power is turned on and the reproduction operation enters a standby state.

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 shooting. 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.

The cross / click key 310 is
It is used to move the pointer display in the left, right, up, and down directions on a thumbnail display screen described later. In this case, a click operation can be performed by pressing a central portion of the key. The jog dial 311 is a key for performing a necessary selection operation or input operation by performing a rotation operation in each operation mode. For example, in a state where the character input mode is set, it is possible to select a character to be input by rotating the jog dial 311. When the input character is determined, a click operation may be performed using the cross / click key 310, for example.

It should be noted that the appearance of the video camera shown in FIG. 6 is merely an example, and may be appropriately changed in accordance with the use conditions and the like actually 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 section for mainly converting image light taken 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 the 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-mentioned 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 unit 3 performs a compression process on the digital image signal supplied from the camera block 2 and a 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. Further, 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. 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 of 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). Also, 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 unit 3 mainly controls the video signal processing and the audio signal data compression / expansion processing in the video signal processing unit 3 and the video signal processing unit 3. Executes the process for controlling the input and output of the data passing through. The data processing / system control circuit 31
The control processing for the entire video signal processing unit 3 including
The video controller 38 is made to execute. 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 signal 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 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 (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) compression-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 before and after in macroblock units to determine that there is motion. If this is done, the detection result is transmitted to the MPEG2 video signal processing circuit 33 as motion vector information. In the MPEG2 video signal processing circuit 33, the quantization coefficient for each macroblock is determined by using the required information such as the motion vector information so that the image data after the compression and encoding has a certain required data rate. It will be decided.

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 via the inside. 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.

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, the operation of reading data stored in the buffer memory 32 during reproduction 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. The 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 decompressed 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 including the lens block 1 and the camera block 2 is naturally displayed. It is possible to display and output 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 should be output from the data processing / system control circuit 31 to the video D / A converter 61 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 image signal data such as required characters and characters may be performed on the image signal data. That is, in this example, the video controller 38 and the data processing / system control circuit 31 have the functions of a character generator and an on-screen display.

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 it 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 is 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.

At the time of recording, the media drive section 4 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. By performing decoding processing on the read data, reproduction 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 write / read 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, and the recording data supplied from the video signal processing unit 3 is encoded in accordance with the MD-DATA1 format and recorded 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, the disc 5 to be loaded is
1 is detachable, and has a mechanism (disk 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, for example, by a biaxial mechanism so as to be displaceable in the radial direction of the disk and in the direction in which the disk comes into contact with and separates from the disk.

The optical head 5 with the disk 51 interposed therebetween
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 thread 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.
311 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, 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 (audio) 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. Further, for example, a file as character information used for inserting a caption can be captured and recorded.

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. The power supply on / off 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. During the recording operation, the video controller 38 causes the indicator 206 to emit light.

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 the 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
, And then input to the equalizer / PLL circuit 104. The equalizer / PLL circuit 104 performs equalizing processing 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. For this reason, 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. In addition, 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 playback 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,
This is a portion for generating a transfer clock (data transfer rate) having a frequency appropriately determined. Further, it generates a clock of a required frequency to be supplied to each functional circuit unit of the media drive unit 4 and the video signal processing unit 3 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 by the method described in 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 discrimination 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 on the basis of the tracking error signal TE, focus error signal FE, spindle error signal SPE, track jump command and access command from the driver controller 46 input as described above. (Tracking control signal, focus control signal, thread control signal, spindle control signal, etc.) 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 a transfer clock (data transfer rate) generated by the transfer clock generation circuit 121, for example.

Scramble / EDC encoding circuit 11
In step 5, for example, the recording data DATAR is written to the buffer memory 42 and developed, and the data scramble processing is performed.
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.

The RLL (1, 7) modulation circuit 118 applies RLL (1, 7) 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 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, an example of a data structure of the disk 51 according to the present embodiment will be described. FIG. 7 conceptually shows an example of the 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.

In the disk 51, for example, PTOC and RTOC areas are provided as management information areas. In the PTOC, required management information is recorded in a pit form, for example, in a premastered area (pit area) on the innermost circumference of the disk. The contents of the PTOC cannot be rewritten. For example, a magneto-optical recording area in which magneto-optical recording and reproduction can be performed is formed around the premastered area where the PTOC is recorded. Then, first, the RTOC area is provided for a section of a predetermined size in the innermost circumference. The RTOC records, for example, basic information necessary for managing data recorded on a disc. For example, in the case of this example, as data recorded on the disc,
Information for managing a track (which may be synonymous with a file) and a folder (structure for grouping and managing tracks) to be described later during recording and reproduction are stored. The contents of the U-TOC in the management area are as follows:
For example, it is assumed that rewriting is sequentially performed in accordance with the result of data recording on a disc and the result of editing processing such as deletion of tracks (files) and folders.

On the outer peripheral side of the RTOC, a data area for recording user data is provided.
In the present embodiment, the data area is a volume folder (Volume Folder) located in one root folder.
er). In the present embodiment, a volume is defined as a complete set of user data, and is defined as having only one volume on one disk. The data contained in this volume is stored as folders and tracks under the volume folder except for those managed by the PTOC and RTOC.

In the volume folder, first,
A predetermined size (for example, 12 clusters) at the physically innermost position (the management track priority area near the RTOC)
Volume Index Trac
k) is placed. The volume index track is defined as an area in which sub-management information is recorded, for example, if the above-mentioned PTOC and RTOC are the main management information, and includes a track (file), a folder, and auxiliary data (Auxiliary Data). And a table in which information for managing packet data forming a property, a title, and a track related to the track is recorded.

Also, at least the first one cluster is RT
As a track recorded so as to be located in the management track priority area near the OC, a thumbnail track (Thumb
nailPicture Track) can be placed as an option. In the present embodiment, one file with a predetermined resolution is associated with each file recorded on the disc.
It is possible to have a number of still images as thumbnail images. The thumbnail image is treated as a representative image for making the file visually recognizable. The thumbnail track is recorded together with index information indicating the correspondence with the file (track) recorded on the disc and the storage position of the thumbnail image. The data length of the thumbnail track can be arbitrarily expanded according to the number of stored thumbnail images and the like.

For example, image / audio data recorded by the user by photographing or the like is managed on a file basis, and is placed under the volume folder as a track in the volume folder or in a folder placed below the volume folder. Will be placed. FIG. 7 shows a state in which a certain file is represented as one track and this track is stored in a certain folder. As described above, a folder has a structure for managing tracks or folders in one group. Therefore, in the structure below the volume folder, an arbitrary number of tracks or folders is stored within the range defined by the maximum number of records that can be stored in the volume folder and the maximum number of levels in the folder hierarchical structure.

An auxiliary data track storing auxiliary data (Auxiliary Data) is stored in the volume folder.
(Auxiliary Data Track) is placed. The information to be stored in the auxiliary data track is arbitrary depending on, for example, an application to be actually applied. In the present embodiment, script information as playback control information is stored.

By the way, the PTO, which is the management information described above,
The information stored in the C, RTOC, or even the volume index track (these information is collectively referred to as “management information” in the present embodiment) is read, for example, when a disc is loaded. For example,
The data is held in a predetermined area of the buffer memory 42 (or the buffer memory 32) of the media drive unit 4. Then, at the time of data recording or editing, the management information stored in the buffer memory is rewritten according to the recording result or the editing result, and thereafter, at a predetermined opportunity and timing, the data is stored in the buffer memory. The management information of the disk 51 is rewritten (updated) based on the content of the held management information (however, P
No update is performed for the 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 on the disk may be changed according to actual use conditions and the like, and data is stored. The structure can be changed.

6. Editing example using sensor unit 6-1. Example of Use of Sensor Unit In the video camera according to the present embodiment having the above configuration, by connecting an external sensor as described below, simple editing using sensor information detected by the external sensor can be performed. Can be.

FIG. 8 shows a general configuration of a sensor unit connected to the video camera of the present embodiment. The sensor unit 400 shown in this figure is separate from the video camera of the present embodiment, and as shown in the figure, a sensor 401, an A / D converter 402, and a DSP (Digital Si
gnal Processor) 403. The sensor 401 is a detection part configured to detect a predetermined detection target, and a detection signal obtained by the sensor 401 is an A / D signal.
The signal is converted into a digital value via the converter 402. The detection signal converted into the digital value is output from the DSP 403
Is subjected to required signal processing, and is output as sensor data. In this case, the output of the DSP 403 is actually connected to the I / F terminal T3 of the video camera device of the present embodiment via a cable or the like. As a result, the detection information output from the sensor unit 400 (DSP 403) is transmitted from the I / F terminal T3 of the video camera device via the external interface 8 (not shown here).
The information is captured as information that can be processed by the video camera device.

FIG. 9 shows a specific example of a system in which the video camera and the sensor unit of the present embodiment are connected. In this case, the weight shift of the player in golf play is obtained as additional information using the sensor unit. In this case, the sensor unit 400 is
4 is connected to the I / F terminal T3 of the video camera. The sensor unit 400 includes a pressure sensor mat 401 as the sensor 400 shown in FIG. The information on the pressure detected by the pressure sensor mat 401 is converted from the A / D converter 402 to the DSP 40.
3, the data is converted into sensor data (sensor information) as described above, and is input to the video camera via the cable 404.

Under such a system, the player who is the subject H stands on the pressure sensor mat 401.
Then, the sensor unit 400 detects the pressure distribution applied to the player's feet and outputs the sensor data to the video camera.

Then, in the state where the sensor data from the sensor unit 400 is input to the video camera as described above, it is assumed that the video camera shoots and records the place where the player who is the subject H is swinging. I do. At this time, in the present embodiment, the captured image in which the player swings is recorded, and the sensor data input during the recording time is also recorded in synchronization with the recording time of the captured image. You. The recording format for this will be described later. By performing the recording in this manner, the captured image in which the subject swings and the sensor data from the sensor unit 400 sampled in synchronization with the captured image are recorded on the disk. That is, in the present embodiment, in addition to the file as the original recorded image, sensor data of the pressure distribution of the foot as related information is recorded on the disc at the same time.

6-2. Display Example of Edited Image FIG. 10 shows a display example of a case where the recorded file recorded as described above is reproduced. When the playback of the recorded file is started, the display screen of the display unit 6A shows, as shown in, for example, FIG. Is displayed. And at this time,
At the time of recording, a sensor image SG visually indicating the value of the recorded sensor data is simultaneously displayed so as to be imposed on the reproduced image.

FIG. 11 shows an enlarged display example of the sensor image SG. In this figure, the sensor image SG
Inside, a left foot image FL indicating a left foot and a right foot image FR indicating a right foot are displayed side by side. Then, the distribution of the pressure applied to the left foot and the right foot at this time (that is, at the time of recording) is indicated by a meter image MG as shown in the figure. In this case, the higher the meter level of the meter image MG, the greater the pressure applied at that time.

After the display shown in FIG. 10A is performed, as shown in FIG. 10B to FIG. 10D, the place where the player who is the subject image HG is swinging is a moving image. Displayed by The sensor image SG displayed at this time is displayed in a state in which the sensor image SG changes in accordance with the progress of the reproduction time of the captured image in accordance with the change in the sensor data during recording. By looking at such a reproduced image, for example, the user can confirm how the weight of the player changes with the golf swing.

Here, the reproduction display of the recording source described above is based on the information of the moving image obtained by shooting the original golf swing and the sensor unit 400 obtained at the time of shooting.
Is displayed so that the sensor data from the camera is visually reflected. This can be regarded as a kind of editing performed on the video source of the captured image. In the present embodiment, this editing process is performed in real time, so to speak, by recording sensor data together with the recording of a captured image. Simply by reproducing, the editing effect (imposition of the sensor image SG) can be obtained.

6-3. Processing Operation (During Recording) Subsequently, a processing operation for realizing an operation of recording sensor data together with a captured image as described above will be described.

First, before describing the processing operation itself, the format of recording data in the video camera of the present embodiment will be described with reference to FIG.
Here, in the following description, in the video camera of the present example, it is assumed that, for example, of the moving image data and audio data for recording, the moving image data is subjected to compression processing in the MPEG2 format. The audio data is
It is assumed that compression processing is performed by ATRAC2.

In this example, the compressed image data and the compressed audio data obtained as described above are divided in time series, and the compressed image data and the compressed audio data obtained by the division are divided into As shown in FIG. 13, the data is stored in a predetermined fixed-length data unit as a “packet”. The compressed image data is stored in the image data area A2, and the compressed audio data is stored in the audio data area A1.

Further, in the present embodiment, in one packet, option data is stored as an area for storing predetermined types of data (optional data: not necessarily time-series data) other than compressed image data and compressed audio data. The area A3 is defined to be allocated. In the present embodiment, sensor data is stored in the option data area A3. Then, the moving image data, the audio data, and the sensor data are recorded on the disk according to the packet sequence.

Here, the playback time of the compressed audio data stored in the audio data area A1 in one packet is synchronized with the playback time of the compressed image data stored in the image data area A2. You. Similarly, the sensor data stored in the option data area A3 is also synchronized with the playback time of the compressed image data stored in the image data area A2.
In other words, the sensor data in the packet is the data input from the external sensor unit 400 when the compressed image data and the compressed audio data stored in the same packet are recorded. The option data area A3 may have a structure in which sensor data and other types of option data are stored in a mixed manner, as long as the data is managed according to a predetermined format.

Next, the processing operation at the time of recording will be described with reference to the flowchart of FIG. Note that the processing shown in this figure is realized by, for example, the video controller 38 functioning as a master controller and the driver controller 46 and the camera controller 25 executing control processing as necessary. This point is the same for the processing operation at the time of reproduction, which will be described later.

In the routine shown in this figure, the process waits for a recording start operation to be performed in step S101. If it is determined that the recording start operation has been performed, the process proceeds to step S102.

In step S102, for example, I /
It is determined whether sensor data is currently input via the F terminal T3. Here, if it is determined that there is no input of sensor data, step S108
Proceed to.

On the other hand, if it is determined in step S102 that sensor data has been input, the flow advances to step S103. The recording operation is started from this step S103. At this time, the video signal of the captured image is supplied from the camera block 2 to the video signal processing unit 3, and the sound collected by the microphone 202 is supplied as sound data. In step S103, the video signal processing unit 3 executes a control process for capturing one packet of compressed image data and compressed audio data. At this time, in the video signal processing unit 3, under the control of the data processing / system control circuit 31, for example, the video signal and the audio data are subjected to compression processing, and simultaneously compressed image data and compressed audio data are separated in packet units. Then, the data is written to the buffer memory 32.

In the following step S104, a process for taking (writing) the sensor data, which is assumed to have been input simultaneously with the compressed image data and compressed audio data taken in step S103, into the buffer memory 32 is executed. .

In the next step S105, the compressed image data, compressed audio data, and sensor data fetched into the buffer memory 32 in the above steps S103 and S104 are generated as one packet data shown in FIG. By the processing up to this point, within one packet,
Compressed image data, compressed audio data, and sensor data, which are synchronized in reproduction time, are stored.
Then, in the subsequent step S106, a control process for writing the packet obtained in the above step S105 to the disk is executed. Actually, the packet transferred from the video signal processing unit 3 to the media drive unit 4 is temporarily stored in the buffer memory 42, and intermittently stored in the disk according to the storage capacity of the buffer memory 42. Is written to the.

The processes of steps S103 to S106 are repeated until it is determined in step S107 that the recording has been completed. Thereby, the recording of the captured image, the collected sound, and the sensor data is performed.

Then, for example, when a recording end operation is performed or the recording capacity of the disk becomes full,
If it is determined in step S107 that the recording has been completed, the process proceeds to step S110. Step S110
In, the necessary recording end processing including the stop of the recording mode in the deck section 5 and the rewriting of the TOC information is executed, and the processing as this routine is ended.

If it is determined in step S102 that no sensor data has been input, the process proceeds to step S108. In step S108, a normal recording process is performed. The normal recording process referred to here is a process of capturing only the compressed image data and the compressed audio data to perform the packetization at the time of packetization, and not performing the process of capturing the sensor data and including it in the packet. It is.

Then, even during the normal recording, if it is determined in step S109 that the recording has been completed, the process proceeds to step S110.

6-4. Processing Operation (During Playback) Subsequently, a processing operation for imposing and displaying the sensor image SG on the playback image during playback will be described with reference to FIG. Note that the process shown in this figure will be described on the assumption that it is a process for reproducing a recorded file recorded including sensor data.

In the processing shown in this figure, first, in step S201, the process waits for a reproduction start operation to be performed. If it is determined that the reproduction start operation has been performed, the process proceeds to step S202. The control process for starting the reproduction is executed.

After the step S202, the reproducing operation for the disc is started, and for example, the deck unit 5
In the buffer memory 42, the data of the recording file read from the disk is stored to some extent. Therefore, in step S203, data is read from the buffer memory 42 in packet units, for example, in the buffer memory 3 of the video signal processing unit 3.
2 is executed. Then, in the next step S204, the compressed moving image data and the compressed audio data are extracted from the packet, and a required decoding process is executed. As a result, the compressed moving image data is finally converted into display image data that can be displayed on the display unit 6A, and the compressed audio data is converted into digital audio data having a sampling frequency of 44.1 KHz and a quantization bit number of 16 bits, for example. Is converted.

In the subsequent step S205, sensor data included in the option area A3 of the packet fetched in the above step S203 is extracted, and
We will analyze this. Then, the next step S2
In 06, sensor image data is generated according to the value of the sensor data obtained in step S205. Here, the sensor image data refers to, for example, FIGS.
As shown in FIG. 1, it is image data as a sensor image SG imposed on a reproduced moving image. A program for generating such sensor image data, data of image parts (for example, the left foot image FL and the right foot image FR shown in FIG. 11) and the meter image MG are stored in, for example, the video controller 38 or the data processing / system. It is stored in the ROM or the like of the control circuit 31 in advance.

For example, if the image data of the sensor image SG as shown in FIG. 11 is to be generated, the left foot image FL and the right foot image FR are pasted into an area of a predetermined number of pixels, and then the sensor data SG is generated. The meter image MG is pasted on the basis of the position information obtained in accordance with the value of and the pressure value of each position.

In this way, in step S206, sensor image data is obtained. Then, the next step S2
At 07, signal processing for synthesizing the sensor image data with the reproduced moving image data is executed. As a result, display image data corresponding to the display image as shown in FIG. 10 is obtained.
The processing in steps 206 and S207 is performed using, for example, a VRAM or the like provided in the data processing / system control circuit 31 as a work area. Further, as an actual process, for example, a procedure of generating display image data while pasting sensor image data to reproduced moving image data expanded on a VRAM may be used.

In the following step S208, processing for synchronously reproducing and outputting the reproduced moving image data (the sensor image SG is imposed) obtained by the above processing and the digital audio data is executed. .
This process is realized mainly by the data processing / system control circuit 31 executing a required control process on the functional circuit unit in the video signal processing unit 3.

At the next step S209, it is determined whether or not the reproduction has been completed. The end of playback here means
For example, this refers to a case where the user performs a reproduction stop operation or the reproduction of a file is completed to the end. If it is determined in step S209 that the reproduction has not been completed, the process returns to step S203. As a result, the above-described processing in packet units is continued until the reproduction ends. If it is determined in step S209 that the reproduction has been completed, the routine ends by exiting this routine.

7. Modification Here, a modification as the present embodiment will be described. FIG. 15 shows a display form example of the sensor image SG instead of FIG. In FIG. 15, the pressure value as sensor data obtained by the pressure sensor mat 401A is displayed by dot density. That is,
The higher the dot density, the higher the pressure in that portion. FIG. 16 shows another example of a display form of the sensor image SG instead of FIG. 11, in which pressure values as sensor data are expressed by so-called contour lines. Thus, the pressure sensor mat 40 is used as a sensor unit.
When 1A or the like is used, various display modes for expressing the pressure value can be considered. Then, FIG.
Various other than 1, 1, 15 and 16 can be considered.

Further, as the sensor unit 400 of the present embodiment shown in FIG. 8, various types can be considered in addition to the pressure sensor mat 401A. Therefore, the sensor unit 4
Another example as 00 is described. One is to provide a sensor for detecting the head speed as the sensor 401 of the sensor unit 400. In this case, for example, the sensor 401 is provided so that the head speed of the club in which the subject as the player swings can be measured. Then, a scene in which the golf player swings the club is photographed and recorded. At this time, information on the head speed at the time of swinging the club is detected by the sensor 401, and this is taken into the video camera as sensor data. Therefore, this sensor data is also recorded as a packet shown in FIG. is there. Then, when the recorded file recorded in this manner is reproduced, a reproduced moving image is displayed, for example, as shown in FIG. That is, the sensor image SG1 indicating the head speed is imposed and displayed on the moving image of the golf player swinging as shown in the figure.

As another one, it is conceivable to provide a sensor capable of scanning the head trajectory as the sensor 401 of the sensor unit 400. In this case, for example, the sensor 401 handles position information of the head on which the golf player swings on the imaging screen as sensor data. Then, if recording is performed by a video camera in a state where the information of the sensor 401 is input, head position information that changes according to the swing of the player is included in the sensor data and recorded. When the recorded file recorded as described above is reproduced, a reproduced moving image is displayed, for example, as shown in FIG. Here, in a moving image in which the golf player is swinging, an image of a line indicating a head trajectory along with the swing operation (indicated by a broken line in the figure)
Are imposed and displayed as the sensor image SG2.

If such an image display as to trace the head trajectory is performed, the image position of the head displayed on the screen before recording is stored in advance by a predetermined operation, and the image of the head is stored. By detecting the motion vector in the video signal processing unit 3, the head position information on the screen can be obtained. In the case of the present embodiment, this is the MP in the video signal processing unit 3.
It can be easily realized by using the motion detection function in the encoder of EG2. In this case, an external sensor is not particularly necessary, and the internal motion detection circuit plays a role as a sensor.

The sensor unit 400 shown in FIG.
The basic configuration of the sensor 401 is as follows.
It may be changed as appropriate according to the type or the like.

Also, in the present embodiment, certain information (sensor data) obtained by the sensor is recorded together with the captured image and the collected sound, and the recorded sensor data is used as a reproduced moving image. Since the main purpose is to perform display in such a manner as to be reflected, various examples can be considered for uses other than golf shown in the above embodiments. Also, as the present invention,
Recording / reproducing by linking captured image information as a still image and sensor data is also included as a concept.

Further, in the above-described embodiment, an example has been described in which the recording or reproducing apparatus of the present invention is mounted on a video camera apparatus capable of recording and reproducing corresponding to a mini-disc, but the present invention is not limited to this. Not something, for example,
A recording / reproducing device capable of recording / reproducing files such as images corresponding to other disk media,
It is also possible to apply a recording / reproducing device that supports tape media such as rder).

Furthermore, the video camera according to the present embodiment is a disk recording / reproducing device based on MD-DATA2 as a video recording / reproducing part. Alternatively, the recording / reproducing apparatus may be a recording / reproducing apparatus compatible with another type of disc-shaped recording medium. Furthermore, in the present embodiment, the description has been made on the assumption that the MPEG2 method is used for compressing moving image data. However, for example, a method capable of compressing and encoding other moving image data may be adopted. 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.).

[0124]

As described above, according to the present invention, when recording a captured image, sensor information (sensor data) detected by an external sensor means can be recorded on a recording medium together with information on the captured image. It is said. When the recording medium on which the captured image and the sensor information are recorded is reproduced as described above, a sensor image that visually indicates the sensor information is combined with the captured image and output as a display image. This makes it possible to automatically record external sensor information, which is information related to the captured image, on the same recording medium as editing material when recording the captured image. In other words, in a sense, the editing operation of adding the related information to the recording information of the captured image is performed in real time during recording. At the time of reproduction, a reproduced image as an edited result can be obtained simply by reproducing the recorded file. As described above, the present invention improves the convenience in editing. Even users who do not own editing equipment such as personal computers can obtain edited recording sources. It also has the effect of being easily obtained.

Further, by recording the captured image and the sensor information in such a manner that time synchronization can be obtained, at the time of reproduction, for example, a sensor which changes as the reproduction time of a reproduced image as a moving image advances. Image display reflecting data can be performed. As a result, a higher editing effect can be obtained as editing for displaying the image of the sensor information on the captured image. This editing can also be performed by the user only by performing an operation of recording while capturing the sensor data.

[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 data structure in a disk according to the embodiment.

FIG. 8 is a block diagram showing a general configuration example as a sensor unit of the present embodiment.

FIG. 9 is an explanatory diagram showing a specific example of usage when a pressure sensor mat is used as a sensor unit.

FIG. 10 is an explanatory diagram showing a display mode example of a reproduced image in which a sensor image is imposed.

FIG. 11 is an explanatory diagram showing an example as a sensor image.

FIG. 12 is a flowchart illustrating a recording operation of a captured image and sensor data according to the present embodiment.

FIG. 13 is an explanatory diagram showing a packet structure of recording data according to the present embodiment.

FIG. 14 is a flowchart illustrating a playback process of a recorded file for displaying sensor data together with a captured image.

FIG. 15 is an explanatory diagram showing another example of a display form as a sensor image.

FIG. 16 is an explanatory diagram showing still another example of a display form as a sensor image.

FIG. 17 is an explanatory diagram showing a display mode example of a reproduced image when a sensor unit for measuring a head speed is used as a modification. It is.

FIG. 18 is an explanatory diagram showing, as a modified example, a display mode example of a reproduced image when a sensor unit using a head position on a screen as sensor data is used.

[Explanation of symbols]

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 encoding circuit, 116 ECC processing circuit, 117 descramble / EDC decoding 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, 304
Zoom key, 305 Eject key, 306 Play key, 307 Stop key, 308, 309 Search key,
310 Cross / click key, 311 jog dial, 401 thumbnail image, 402 pointer, 41
0 heading image, 410A date and time heading image, Ld land, NWG non-wobbled groove, WG wobbled groove, TrA, TrB track

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Shiro Morotomi 6-7-35 Kita Shinagawa, Shinagawa-ku, Tokyo Inside Sony Corporation (72) Inventor Tomoyo Kashimoto 6-35 Kita-Shinagawa, Shinagawa-ku, Tokyo No. Sony Corporation F term (reference) 5C022 AB02 AB22 AC03 AC31 AC42 AC54 AC69 AC71 AC72 AC74 5C023 AA11 AA14 AA18 AA37 CA01 CA05 CA08 DA01 DA08 EA17 5C053 FA23 GA11 GB36 GB38 JA01 JA30 KA01 KA24 KA25 KA25 LA01

Claims (4)

[Claims] An imaging unit for obtaining a captured image; a sensor information input unit for detecting a predetermined detection target and inputting sensor information detected by a sensor unit separate from the recording device; The image information obtained based on the captured image can be recorded on a predetermined recording medium, and the sensor information obtained by the sensor information input means can be recorded on the recording medium when the image information is recorded. And a recording means. 2. The recording means is configured to be able to record the image information and the sensor information in a predetermined format in which time synchronization between the image information and the sensor information can be obtained. The recording device according to claim 1, wherein: 3. A reproducing apparatus for reproducing a recorded medium in which a captured image is recorded as image information and sensor information inputted from an external sensor means for detecting a predetermined state at the time of recording is recorded. A data reading unit that can read at least the image information and the sensor information from the recording medium; and at least display image information can be generated and output from the image information read by the data reading unit. Reproduction output means; sensor image generation means for generating sensor image information for visually expressing sensor information based on the sensor information read by the data read means; and in the reproduction output means, the data read means Display image that combines the sensor image information with the image information read by A reproducing apparatus comprising: the data readout unit; the sensor image generating unit; and a reproduction control unit capable of controlling each operation of the reproduction output unit so that information is output. . 4. The recording medium, wherein the image information and the sensor information can be recorded in a predetermined format in which time synchronization between the image information and the sensor information can be obtained. Then, the reproduction control means includes: the data readout means; and the sensor image, so that display image information obtained by obtaining temporal synchronization between the image information and the sensor information is output from the reproduction output means. 4. The reproducing apparatus according to claim 3, wherein each operation of the generating unit and the reproducing output unit is configured to be controllable.