JP2000188736A - Recording device, recording method, reproducing device, reproducing method and recording medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce a circuit scale and to record or reproduce still image data of a still image high in image quality together with dynamic image data by compressing and encoding the dynamic image data and the still image data with respective compression and coding systems for dynamic and still images and multiplexing the compressed dynamic and still images data to record them on a prescribed recording medium. SOLUTION: In a recording processing part 6, dynamic image data D1 or still image data D10 is generated from an imaging signal S1 by a camera signal processing circuit 10 and transmitted through a switching device 11. The dynamic image data D1 is compressed and encoded by a dynamic image coding circuit 12 and is packeted by a 1st packeting circuit 13. The still image data D10 stored in a still image memory is compressed and encoded by a still image coding circuit 22 and is packeted by a 3rd packeting circuit 23. Next, a multiplexer 14 performs time division multiplexing of outputs of 1st to 3rd packeting circuits 13, 17 and 23 and records them on a magnetic tape 8 through a high frequency modulator 18 and a magnetic head 7.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a recording apparatus and a recording method,
The present invention relates to a reproducing apparatus, a method, and a recording medium, which are suitably applied to, for example, a digital video camera that records and reproduces still image data of a still image on a magnetic tape.

[0002]

2. Description of the Related Art Heretofore, a digital video camera of this type has been obtained by recording and reproducing moving image data of a moving image obtained by imaging a subject on, for example, a magnetic tape and imaging the subject. There is a type of recording and reproducing still image data of a still image in a memory.

A digital video camera of this type records and reproduces moving image data of a moving image obtained by capturing an image of a subject in a predetermined moving image format such as a digital video format on a magnetic tape, for example. Still image data of a still image obtained by capturing an image is recorded and reproduced on a magnetic tape in a similar moving image format.

[0004]

In a digital video camera provided with a memory for recording and reproducing still image data (hereinafter referred to as a first digital video camera), a magnetic tape and the magnetic tape are used. In addition to a control circuit for recording and reproducing moving image data, it is necessary to provide a memory and a predetermined control circuit for recording and reproducing still image data in the memory. However, in order to record still image data for a large number of frames in this memory, there is a problem that the circuit size is further increased due to the increase in the memory size.

In the first digital video camera, when recording and reproducing moving image data and still image data, a magnetic tape or a memory is provided for a user to record and reproduce these moving image data and still image data. Is specified, and thus there is a problem that the operation at the time of recording / reproduction becomes complicated.

On the other hand, in a digital video camera that records and reproduces still image data in a moving image format (hereinafter, referred to as a second digital video camera), a still image generally has higher image quality than a moving image. However, there is a problem that the quality of the still image is low because the still image data is recorded and reproduced in the moving image format.

In the second digital video camera, when still image data reproduced from a magnetic tape is transmitted to, for example, a personal computer to process and edit a still image based on the still image data, It is necessary to convert the still image data captured by the computer into a predetermined still image format, and there is a problem that the processing of capturing the still image data by the personal computer becomes complicated.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and is a recording apparatus, method, and reproducing apparatus capable of recording or reproducing high-quality still image data together with moving image data by reducing the circuit scale. And a method and a recording medium.

[0009]

According to the present invention, in a recording apparatus, a first compression encoding means for compressing and encoding moving image data by a predetermined moving image compression encoding method. A second compression encoding unit for compressing and encoding the still image data according to a predetermined still image compression encoding system; a moving image data compression-encoded by the first compression encoding unit; Recording means for multiplexing the still image data compressed and encoded by the compression encoding means and recording the multiplexed still image data on a predetermined recording medium.

As a result, the configuration of a circuit for recording the moving image data and the still image data can be simplified by recording the still image data in the still image format together with the moving image data on one recording medium. it can.

According to the present invention, in the recording method, the moving image data is compression-encoded by a predetermined moving image compression encoding method, and the still image data is compressed by a predetermined still image compression encoding method. A first step of encoding and a second step of multiplexing the moving image data and the still image data compressed and encoded in the first step and recording the multiplexed moving image data and the still image data on a predetermined recording medium are provided.

As a result, the configuration of a circuit for recording the moving image data and the still image data can be simplified by recording the still image data in the still image format together with the moving image data on one recording medium. it can.

Further, according to the present invention, in the reproducing apparatus, the moving picture data and the still picture for a predetermined still picture which are multiplexed and recorded on a predetermined recording medium and which are compression-encoded by a predetermined moving picture compression encoding method. Reproducing means for reproducing still image data compressed and encoded by the compression encoding method, moving image data compressed and encoded by the compression encoding method for moving image reproduced by the reproducing means, Separation means for separating the still image data compressed and encoded by the compression encoding method is provided.

As a result, the configuration of a circuit for reproducing the moving image data and the still image data can be simplified by reproducing the still image data in the still image format together with the moving image data from one recording medium. it can.

Further, according to the present invention, in the reproducing method, the moving picture data and the still picture for a predetermined still picture which are multiplexed and recorded on a predetermined recording medium and which are compression coded by a predetermined moving picture compression coding method. A first step of reproducing still image data compression-encoded by the compression encoding method, and moving image data compressed and encoded by the compression encoding method for the moving image reproduced in the first step. And a second step of separating the still image data compressed and encoded by the still image compression encoding method.

As a result, the configuration of the circuit for reproducing the moving image data and the still image data can be simplified by reproducing the still image data in the still image format together with the moving image data from one recording medium. it can.

Further, according to the present invention, in a recording medium, moving image data compressed and encoded by a predetermined moving image compression encoding method and compression encoded by a predetermined still image compression encoding method are recorded. Still image data is multiplexed and recorded.

As a result, it is possible to simplify the configuration of a circuit for recording and reproducing moving image data and still image data in the recording device and the reproducing device, and to record or reproduce still image data in a still image format together with the moving image data. Can be.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the drawings.

In FIG. 1, reference numeral 1 denotes a digital video camera to which the present invention is applied as a whole.
An optical image of a subject is formed on an imager 5 in the imaging unit 2 via the first and second lenses 3 and 4 sequentially, and the imager 5 generates an image signal S1 based on the formed optical image. This is sent to the recording processing unit 6.

Then, the recording processing section 6 outputs the image signal S1.
Is subjected to a predetermined recording process to generate a modulation signal S2 based on moving image data and / or still image data, and this is recorded on a magnetic tape 8 via a magnetic head 7.

On the other hand, in the reproduction mode, the reproduction processing section 9 reproduces the modulated signal S2 recorded on the magnetic tape 8 by the magnetic head 7 and performs a predetermined reproduction process on the reproduced modulated signal S2. The moving image data or the still image data is output.

Here, in the actual recording processing section 6, as shown in FIG. 2, in the moving image recording mode, the image pickup signal S1 sent from the imager 5 is captured by the camera signal processing circuit 10, and the camera signal processing circuit 10 In 10, after performing predetermined signal processing such as gain adjustment and color control on the image pickup signal S 1, the digital signal is converted to generate moving image data D 1, which is transmitted to the moving image encoding circuit 12 via the switch 11. Send out.

The moving picture coding circuit 12 converts the moving picture data D1 provided from the camera signal processing circuit 10 via the switch 11 into the MPEG2 standard (ISO / IEC (International Orga
nization for Standardization / International Electro
technical Commission) 13818-2) Compression encoding in video format by inter-frame prediction encoding method,
The obtained encoded video data D2 is sent to the first packetization circuit 13.

The first packetizing circuit 13 packetizes the coded moving picture data D2 given from the moving picture coding circuit 12 by sequentially adding predetermined header information for each predetermined unit, and obtains the obtained moving picture packet. The data D3 is sent to the multiplexer 14.

At this time, the audio data D4 obtained by collecting surrounding audio through the microphone 15 is encoded by the multiplexer 14 through the audio encoding circuit 16 by a predetermined compression encoding method. Thereafter, the audio packet data D5 obtained by sequentially packetizing every predetermined unit via the second packetizing circuit 17 is provided.

Thus, the multiplexer 14 converts the moving picture packet data D3 and the audio packet data D5 supplied from the first and second packetizing circuits 13 and 17 according to the MPEG2 standard (ISO / IEC 13818-1). After division and multiplexing, track data D 6 having a predetermined data length is generated by sequentially adding subcode data while separating the data into units of a predetermined number of packets, and this is sent to the high-frequency modulator 18.

When the multiplexer 14 separates the time-division multiplexed moving picture packet data D3 and audio packet data D5 into a predetermined number of packets, the moving picture packet data D3 and the audio packet data D5 less than the predetermined number of packets are used. Is separated, the track data D6 having a predetermined data length is generated by adding subcode data together with invalid data called stuffing data to the moving image packet data D3 and the audio packet data D5.

The high-frequency modulator 18 sequentially modulates the track data D6 supplied from the multiplexer 14 at a high frequency, and sends out the obtained modulation signal S2 to the magnetic head 7. As a result, the modulation signal S2 is recorded on the magnetic tape 8 by the magnetic head 7.

In the recording processing unit 6, in the still image recording mode, the camera signal processing circuit 10 converts the moving image data D1 for one frame at a timing desired by the user as the still image data D10 via the switch 11 to the still image recording mode. The still image data D10 is transmitted to the image memory 20, and the still image data D10 is stored in the still image memory 20.

At this time, the still image data D10 stored in the still image memory 20 is given to the viewfinder 21. As a result, a still image based on the still image data D10 is displayed on the view finder 21, so that the user can visually check the still image.

The still picture data D10 written in the still picture memory 20 is repeatedly read out sequentially by the moving picture coding circuit 12 for a predetermined period, and is read once by the still picture coding circuit 22.

Here, the moving picture encoding circuit 12 compresses and encodes the still picture data D10 for a plurality of frames read from the still picture memory 20 as pseudo moving picture data of a motionless moving picture by an inter-frame predictive coding method. From the obtained pseudo moving picture encoded data D11, the pseudo moving picture packet data D12 is sequentially generated via the first packetizing circuit 13, and this is transmitted to the multiplexer 14.

Further, the still picture encoding circuit 22 outputs one frame of still picture data D read from the still picture memory 20.
10 is compression-encoded by a JPEG standard intra-frame predictive encoding method in a still image format that has a relatively low compression rate but prevents the image quality from deteriorating, and obtains still image encoded data D13 in a third packet. To the conversion circuit 23.

The third packetizing circuit 23 packetizes the still image coded data D13 given from the still image coding circuit 22 by sequentially adding predetermined header information for each predetermined unit and packetizing the obtained still image data D13. Image packet data D14
To the multiplexer 14.

In this case, the multiplexer 14 receives the audio packet data D5 from the second packetizing circuit 17 in the same manner as described above, and the first to third packetizing circuits 1
After time-division multiplexing of the pseudo video packet data D12, still image packet data D14, and audio packet data D5 given from 3, 17, and 23, the subcode data is sequentially separated while being separated into a predetermined number of packets. The track data D 15 having the same predetermined data length as the track data D 6 described above is generated by the addition, and sent to the high-frequency modulator 18.

By the way, the multiplexer 14 generates the track data D15 by using the invalid data as necessary in the same manner as in the above-described moving image recording mode.

Thus, the high-frequency modulator 18 sequentially modulates the track data D15 supplied from the multiplexer 14 at a high frequency, and sends out the obtained modulation signal S3 to the magnetic head 7. As a result, the modulation signal S3 is recorded on the magnetic tape 8 by the magnetic head 7.

As described above, in the digital video camera 1, the still image data D10 (and the pseudo moving image data) are recorded on the magnetic tape 8, so that the number of frames is larger than that of the conventional first digital video camera. The still image data D10 (and pseudo moving image data) can be recorded.

Further, in the digital video camera 1, by recording the pseudo moving image data and the still image data D10 together with the moving image data D1 on the magnetic tape 8, the recording operation can be simplified.

In the digital video camera 1, the moving picture encoding circuit 12 is in the still picture recording mode.
In the above, by compressing and coding still image data D10 for a plurality of frames without motion by an inter-frame predictive coding method, the data amount of the pseudo moving image coded data D11 obtained as a result is the same in the moving image recording mode. It is possible to greatly reduce the data amount of moving image encoded data obtained by compressing and encoding moving image data D1 for the number of frames (hereinafter, this is particularly referred to as comparative moving image encoded data).

Accordingly, when the pseudo moving picture encoded data D11 is recorded on the magnetic tape 8 by the small amount of the pseudo moving picture encoded data D11 in this manner, compared to the case where comparative moving picture encoded data is recorded. Since a large amount of free space exists in the recording track, the still image encoded data D13 can be recorded in the free space of this recording track.

Thus, the digital video camera 1
In order to record the still image data D10 of a high-quality still image in the still image recording mode, the still image of the high-quality still image is not degraded without deteriorating the image quality of the motionless moving image based on the pseudo moving image data. The pseudo moving image data can be recorded on the magnetic tape 8 at high density together with the image data D10.

On the other hand, in the reproduction processing section 9, as shown in FIG. 3, in the moving image reproduction mode, the modulation signal S2 recorded on the magnetic tape 8 is reproduced from the magnetic tape 8 by the magnetic head 7, and this is converted into a modulation signal detection circuit. 25.

The modulation signal detection circuit 25 demodulates the modulation signal S 2 given from the magnetic head 7 and sends out the obtained track data D 6 to the packet detection circuit 26.

The packet detection circuit 26 sequentially converts the track data D6 given from the modulation signal detection circuit 25 into moving image packet data D3 and audio packet data D5 based on the header information of the moving image packet data D3 and audio packet data D5. The separated moving image packet data D3 and audio packet data D5 are sent to the demultiplexer 27.

The demultiplexer 27 discriminates the moving picture packet data D3 and the audio packet data D5 given from the packet detecting circuit 26 based on the header information, and converts the moving picture packet data D3 into a first unpacket. The voice packet data D5 is transmitted to the second unpacketizing circuit 29.

Here, the first unpacketizing circuit 28
A predetermined unit of encoded video data D2 stored therein is sequentially extracted from the video packet data D3 provided from the demultiplexer 27, and the extracted encoded video data D2 is stored in the header information of the video packet data D2. The original encoded video data D2 is reconstructed in such a manner as to be connected based on the above, and is sent to the video decoding circuit 30.

The moving picture decoding circuit 30 decodes the coded moving picture data D2 supplied from the first unpacketizing circuit 28 and converts the obtained original moving picture data D1 into a digital / analog converter 31. And then, for example, NTSC through the format converter 32
(National Television System Committee) to convert the format and output the obtained video signal S4.

The second unpacketizing circuit 29 sequentially extracts predetermined units of audio encoded data D17 stored therein from the audio packet data D5 supplied from the demultiplexer 27, and extracts the extracted audio encoded data. The data D17 is concatenated based on the header information of the voice packet data D5 so that the original voice coded data D
17 is reconstructed and sent to the audio decoding circuit 33.

The voice decoding circuit 33 outputs the voice coded data D given from the second unpacketizing circuit 29.
17 is decoded, the obtained original audio data D4 is converted into an analog signal through a digital / analog converter 34, and then is converted into a format through a format converter 32 based on, for example, the NTSC system. Is output.

In the reproduction processing section 9, in the still image reproduction mode, the magnetic head 7, the modulation signal detection circuit 25 and the packet detection circuit 26 operate in the same manner as in the above-described moving image reproduction mode, and reproduce from the magnetic tape 8. The track data D15 is obtained based on the modulated signal S3 thus obtained, and the track data D15 is converted to the pseudo moving picture packet data D15.
12. The data is separated into still image packet data D14 and audio packet data D5 and sent to the demultiplexer 27.

The demultiplexer 27 outputs the pseudo moving picture packet data D1 supplied from the packet detecting circuit 26.
2. The still image packet data D12 and the still image packet data D14 are transmitted to the switch 35 so that the still image packet data D14 and the audio packet data D5 are identified based on the header information. The packet data D5 is sent to the second unpacketizing circuit 29.

The switching unit 35 provides the pseudo moving picture packet data D12 supplied from the demultiplexer 27.
And one of the still image packet data D14 specified by the user via the interface circuit 36.

In this way, in the digital video camera 1, the pseudo video coding data D2 is recorded together with the video coding data D2 recorded on the magnetic tape 8 on the magnetic tape 8.
The reproduction operation can be simplified by reproducing the encoded image data 12 and the encoded still image data D14.

Here, the moving picture packet data D3 and the pseudo moving picture packet data D12 are actually composed of a sync section 40 and an identification information section 41 in which header information is stored as shown in FIG. , And a parity section 43. As shown in FIG. 4B, the identification information section 41 includes a track number section 44 and a packet number section 4.
5, a data identification unit 46, and a user data unit 47.

In this case, the sync section 40 stores sync data for separating the moving picture packet data D3 and the pseudo moving picture packet data D12 from the track data D6 and D15.

In the identification information section 41, as shown in FIG. 5, the track number section 44 stores the number data of the recording track recorded on the magnetic tape 8, and the packet number section 45 stores the recording track number data. Is recorded in the data identification unit 46. The data identification unit 46 records moving image encoded data D3 and pseudo data obtained by encoding the data stored in the data unit 42 according to the MPEG2 standard. Moving picture encoded data D1
In addition to storing identification data indicating that the number is 2, the user data section 47 stores predetermined data determined by the user.

Further, as shown in FIG. 6, the data section 42 is generated based on the coded video data D2 and the coded pseudo video data D11 in accordance with the MPEG2 standard.
The 188-byte (fixed-length) TS (Transport Stream) packet includes moving image encoded data D2 in TS packet units.
The coded pseudo-video data D11 is divided into two equal parts of 192-byte data to which a predetermined 4-byte packet header storing time information data and the like transmitted from the video coding circuit 12 is added. One of them is stored.

The parity section 43 includes the identification information section 4
1 and parity data generated based on all data stored in the data section 42 are stored.

On the other hand, the still image packet data D14 has the same reference numerals as in FIG.
Although it has the same configuration as the moving picture packet data D3 and the pseudo moving picture packet data D12 described above, the data section 4
8, the still image coded data D1 as shown in FIG.
The still image coded data D13 in units of 96 bytes obtained by sequentially separating 3 in units of 96 bytes is stored.

In the identification information section 49, the data identification section 50 includes still picture encoded data D13 obtained by encoding the data stored in the data section 48 according to the JPEG standard, as shown in FIG. Is stored.

The moving picture packet data D3 (or the pseudo moving picture packet data D12 and the still picture packet data D14) is time-division multiplexed together with the audio packet data D5 as shown in FIG. Each time, the subcode data D19 is added to the head portion and is sequentially recorded on the magnetic tape 8.

(3) Operation and Effect of the Present Embodiment In the above configuration, in the digital video camera 1, in the still image recording mode, one frame of the still image data D10 is compression-coded by the intra-frame predictive coding method. Still image packet data D14 is generated by packetizing the obtained still image encoded data D13, and the still image data D10 for a plurality of frames is generated.
Is compressed and encoded by the inter-frame prediction encoding method as pseudo-moving image data without motion, and pseudo-moving image packet data D12 is generated by packetizing the obtained pseudo-moving image encoded data D11. The packet data D14 and the pseudo moving image packet data D12 are time-division multiplexed and recorded on the magnetic tape 8.

On the other hand, in this digital video camera 1,
In the still image reproduction mode, the still image packet data D14 and the pseudo moving image packet data D12 recorded by time-division multiplexing on the magnetic tape 8 are reproduced, and the reproduced still image packet data D14 and the pseudo moving image packet data D12 are reproduced. The static image packet data D14 and the pseudo moving image packet data D12 are separated and output based on the header information.

Therefore, in the digital video camera 1, since the still image data D10 and the pseudo moving image data (moving image data D1) are recorded and reproduced on one magnetic tape 8, the still image data D10 and the pseudo moving image data (moving image data D1) are recorded in the same manner as the conventional first digital video camera. The still image data D10 and the pseudo moving image data (moving image data D1) are recorded without using a dedicated memory for recording and reproducing image data and a predetermined control circuit for controlling recording and reproduction in the memory. And a control system therefor can be one type, and the circuit configuration can be simplified.

In this digital video camera 1,
JP of still image data D10 of a relatively high quality still image
Since the still image data is compressed and encoded in the still image format by the EG standard intra-frame predictive encoding method and is recorded on the magnetic tape 8, the still image data D10 is recorded and reproduced without deteriorating the image quality of the still image based thereon. be able to.

Further, in the digital video camera 1, since the pseudo moving image data and the still image data D10 are recorded on the magnetic tape 8, the still image packet data D14 in the still image format can be captured in the still image reproduction mode. For example, the still image packet data D14 can be supplied to a personal computer as a still image, and the still image packet data D14 in the still image format cannot be imported, but the pseudo moving image packet data D12 in the moving image format is imported. A pseudo video packet data D12 in this video format can be supplied as a still image to a video tape recorder, for example, which can be used, and thus the versatility can be greatly improved.

In the digital video camera 1, if the imager 5 and the still image encoding circuit 22 are selected so as to capture or process a high-quality image, the image quality of the still image to be recorded and reproduced can be easily improved. Can be.

According to the above configuration, the still image encoded data D13 obtained by compressing and encoding the still image data D10 for one frame by the intra-frame predictive encoding method.
And time-division multiplexing of coded pseudo-moving image data D11 obtained by compressing and encoding still image data D10 for a plurality of frames by an inter-frame predictive coding method, and recording the multiplexed data on a magnetic tape 8; 8, the still image packet data D1 recorded by time-division multiplexing
3 and the pseudo moving picture coded data D11 are reproduced and separated, so that a recording medium for recording and reproducing the still picture data D10, the pseudo moving picture data, and the moving picture data D1 and a control system thereof are one kind. Thus, a digital video camera capable of recording and reproducing still image data of a high-quality still image together with moving image data can be realized by downsizing the circuit configuration, thereby reducing the circuit scale.

In the above-described embodiment, a case has been described where the JPEG standard intra-frame predictive coding method is used when the still image data D10 is compression-coded. However, the present invention is not limited to this. If still image data of a high-quality still image can be recorded and reproduced, GI
Other various compression coding methods for still images, such as F (Graphics Interchange Format), may be used.

Further, in the above-described embodiment, the case has been described where the inter-frame predictive encoding system of the MPEG2 standard is used when the moving image data D1 and the pseudo moving image data are compression-encoded. The present invention is not limited to this, and any other compression coding method for moving images may be used as long as the moving image data D1 and the pseudo moving image data are compression-coded using time correlation.

Further, in the above-described embodiment, a case has been described in which pseudo moving image data is recorded and reproduced on the magnetic tape 8 together with the still image data D10.
The present invention is not limited to this, and the moving image data D1 may be recorded and reproduced on the magnetic tape 8 together with the still image data D10. In this case, the same effects as those of the above-described embodiment can be obtained.

At this time, in order to record the moving image data D1 together with the still image data D10 on the magnetic tape 8 at a high density, the moving image encoding circuit 12 requires a higher compression ratio than in the moving image recording mode, or In addition to the encoding circuit 12, a dedicated moving image encoding circuit having a higher compression ratio than the moving image encoding circuit 12 in the still image recording mode may be used.

In the above embodiment, the moving image data D1 and the audio data D4 are time-division multiplexed and recorded on the magnetic tape 8, and the still image data D10, the pseudo moving image data and the audio data D4 are time-division multiplexed. Although the case of multiplexing and recording on the magnetic tape 8 has been described, the present invention is not limited to this, and the moving image data D1 and the audio data D4, the still image data D10, the pseudo moving image data, and the audio data D4 are In addition, the data may be multiplexed and recorded by various multiplexing methods.

Further, in the above-described embodiment, the case where the present invention is applied to the above-described digital video camera 1 has been described. However, the present invention is not limited to this.
The present invention may be applied to various other recording devices and reproducing devices such as a digital video tape recorder.

Further, in the above-described embodiment, the case where the still image data D10 is recorded and reproduced on the magnetic tape 8 has been described. However, the present invention is not limited to this. Like
In addition, recording and reproduction may be performed on various recording media.

Further, in the above embodiment, the moving picture coding circuit 12 is applied as the first compression coding means for compressing and coding moving picture data by a predetermined moving picture compression coding method. Although the case has been described, the present invention is not limited to this, and various other first compression encoding means may be applied.

Further, in the above-described embodiment, the still picture encoding circuit 22 is applied as second compression encoding means for compressing and encoding still picture data by a predetermined still picture compression encoding scheme. However, the present invention is not limited to this, and various other second compression encoding means may be applied.

Further, in the above-described embodiment, the first
First and third recording means for multiplexing the moving image data compressed and encoded by the compression encoding means and the still image data compression encoded by the second compression encoding means and recording the multiplexed moving image data on a predetermined recording medium. Has been described in which the packetizing circuits 13 and 23, the multiplexer 14, the high-frequency modulator 18 and the magnetic head 7 are applied. However, the present invention is not limited to this, and various other recording means may be applied. May be.

Further, in the above-described embodiment, a case has been described in which still image memory 20 is applied as storage means for storing one frame of still image data. However, the present invention is not limited to this. Other various storage means may be applied.

Further, in the above-described embodiment, the moving picture data and the predetermined still picture which are time-division multiplexed and recorded on a predetermined recording medium and which are compression-coded by a predetermined moving picture compression coding method. A case in which the magnetic head 7 and the modulation signal detection circuit 25 are applied as reproduction means for reproducing still image data compressed and encoded by the compression encoding method for use in the present invention, but the present invention is not limited to this. In addition, various other reproducing means may be applied.

Further, in the above-described embodiment, the moving picture data compressed and coded by the moving picture compression coding method reproduced by the reproducing means and the compression coded by the still picture compression coding method are used. The case where the packet detection circuit 26 and the demultiplexer 27 are applied as separation means for separating the still image data from the still image data has been described. However, the present invention is not limited to this, and various other separation means may be applied. May be.

[0084]

As described above, according to the present invention, in a recording apparatus, first compression encoding means for compressing and encoding moving image data by a predetermined moving image compression encoding method;
A second compression encoding unit for compressing and encoding the still image data according to a predetermined still image compression encoding method; moving image data and a second compression code compressed and encoded by the first compression encoding unit; Recording means for multiplexing the still image data compression-encoded by the multiplexing means and recording the multiplexed still image data on a predetermined recording medium. The configuration of the circuit for recording the moving image data and the still image data can be simplified by recording, and thus the circuit size can be reduced, and the still image data of the high-quality still image can be formed together with the moving image data. A recording device capable of recording can be realized.

In the recording method, moving image data is compression-encoded by a predetermined moving image compression encoding method, and still image data is compression-encoded by a predetermined still image compression encoding method. And a second step of multiplexing the moving image data and the still image data compressed and encoded in the first step and recording the multiplexed moving image data and the still image data on a predetermined recording medium,
By recording still image data in a still image format together with moving image data on one recording medium, the configuration of a circuit for recording the moving image data and the still image data can be simplified, and thus the circuit scale can be reduced. It is possible to realize a recording method that can be downsized to record still image data of a high-quality still image together with moving image data.

Further, in the reproducing apparatus, moving image data compressed and encoded by a predetermined moving image compression encoding system and multiplexed and recorded on a predetermined recording medium, and a predetermined still image compression encoding system Reproducing means for reproducing the still image data compressed and encoded by the reproducing means, moving image data compressed and encoded by the moving image compression encoding method reproduced by the reproducing means, and still image compression encoding method By providing separation means for separating the compression-encoded still image data from the still image data, the moving image data and still image data in the still image format are reproduced together with the moving image data from one recording medium. The configuration of a circuit for reproducing still image data can be simplified. It is possible to realize a reproducing apparatus capable of reproducing still image data quality still images.

Further, in the reproducing method, moving picture data multiplexed and recorded on a predetermined recording medium and compressed and coded by a predetermined moving picture compression coding scheme and a predetermined still picture compression coding scheme A first step of reproducing still image data compression-encoded by
A second step of separating the moving image data compressed and encoded by the moving image compression encoding method reproduced in the step and the still image data compression encoded by the still image compression encoding method. Is provided to reproduce still image data in a still image format together with moving image data from one recording medium, thereby simplifying the configuration of a circuit for reproducing the moving image data and the still image data. Thus, it is possible to realize a reproducing method capable of reproducing high-quality still image data together with moving image data by reducing the circuit scale.

Further, on the recording medium, moving image data compressed and encoded by a predetermined moving image compression encoding method and still image data compressed and encoded by a predetermined still image compression encoding method are combined. By multiplexing and recording, the configuration of a circuit for recording and reproducing moving image data and still image data in the recording device and the reproducing device is simplified, and the still image data in the still image format is recorded together with the moving image data. The recording medium can be recorded or reproduced, and thus a recording medium capable of recording or reproducing high-quality still image data together with moving image data by reducing the circuit scale of the recording device and the reproducing device can be realized.

[Brief description of the drawings]

FIG. 1 is a block diagram showing one embodiment of a configuration of a digital video camera according to the present invention.

FIG. 2 is a block diagram illustrating a circuit configuration of a recording processing unit.

FIG. 3 is a block diagram illustrating a circuit configuration of a reproduction processing unit.

FIG. 4 is a schematic diagram illustrating a configuration of moving image packet data and pseudo moving image packet data.

FIG. 5 is a table for explaining data stored in identification information sections of moving image packet data and pseudo moving image packet data.

FIG. 6 is a schematic diagram for describing moving image encoded data and pseudo moving image encoded data stored in the data portions of moving image packet data and pseudo moving image packet data.

FIG. 7 is a schematic diagram illustrating a configuration of still image packet data.

FIG. 8 is a schematic diagram for explaining still image encoded data stored in a data portion of still image packet data.

FIG. 9 is a table for explaining data stored in an identification information section of still image packet data.

FIG. 10 is a schematic diagram for explaining recording on a magnetic tape;

[Explanation of symbols]

1 ... Digital video camera, 6 ... Record processing unit, 7
... magnetic head, 8 ... magnetic tape, 9 ... reproduction processing unit, 12 ... moving image encoding circuit, 13 ... first packetization circuit, 14 ... multiplexer, 18 ... high frequency modulator, 20 ... ... Still picture memory, 22 ... Still picture coding circuit, 23 ... Third packetization circuit, 25 ... Modulation signal detection circuit, 27 ... Demultiplexer, D1 ... Moving picture data, S2 ... Moving picture Encoded data, D3 ... Moving picture packet data, D10 ... Still picture data, D11 ...
... Pseudo moving picture encoded data D12 Pseudo moving picture packet data D13 Still picture encoded data D14
...... Still image packet data.

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 5C053 FA07 FA22 GA14 GB01 GB06 GB11 GB21 GB29 GB30 GB36 GB38 JA21 KA03 LA01 5D044 AB07 AB08 BC01 CC03 DE03 DE14 GK08 5D080 BA03 BA04 EA27 GA07 GA25

Claims (15)

[Claims] A first compression encoding unit for compressing and encoding moving image data by a predetermined moving image compression encoding system; and a compression encoding system for compressing still image data by a predetermined still image compression encoding system. Multiplexing the moving image data compressed and encoded by the first compression encoding means and the still image data compression encoded by the second compression encoding means. Recording means for converting the data into a predetermined recording medium. 2. The image processing apparatus according to claim 1, wherein the first compression encoding means converts the moving image data into an MPEG2 (Moving Picture Experer).
ts Group 2) The compression encoding is performed according to the inter-frame prediction encoding method of the standard, and the second compression encoding means converts the still image data to JPEG (Joint Photographic C).
2. The recording apparatus according to claim 1, wherein compression encoding is performed by an intra-frame predictive encoding method of an oding expert group. 3. A storage means for storing one frame of the still image data, wherein the first compression encoding means repeatedly reads the one frame of the still image data from the storage means. The read still image data for a plurality of frames is compression-encoded by the moving image compression encoding method, and the second compression encoding unit reads the one frame of the still image data from the storage unit. The read still image data for one frame is compression-encoded by the still image compression-encoding method, and the recording unit is configured to store the plurality of frames compressed and encoded by the first compression-encoding unit. Of the still image data for one frame and the still image data for one frame that has been compression-encoded by the second compression-encoding means. Redundant to the recording apparatus according to claim 1, characterized in that recording on the recording medium. 4. A first step of compressing and encoding moving image data by a predetermined moving image compression encoding method and compressing and encoding still image data by a predetermined still image compression encoding method. And a second step of multiplexing the moving image data and the still image data compressed and encoded in the first step and recording the multiplexed moving image data and the still image data on a predetermined recording medium. 5. In the first step, the moving image data is compression-encoded by an inter-frame predictive encoding system of the MPEG2 standard, and the still image data is compressed by the intra-frame predictive encoding system of the JPEG standard. 5. The recording method according to claim 4, wherein encoding is performed. 6. In the first step, one frame of the still image data is stored, and the stored one frame of the still image data is repeatedly read out. The image data is compression-encoded by the moving image compression-encoding method, and the stored still image data for one frame is read out.
The still image data for a frame is compression-encoded by the compression encoding method for a still image. In the second step, the still image data for the plurality of frames, which are compression-encoded in the first step, and 5. The recording method according to claim 4, wherein the still image data for one frame is multiplexed and recorded on the recording medium. 7. A multiplexed recording recorded on a predetermined recording medium,
Reproducing means for reproducing moving image data compression-encoded by a predetermined moving image compression encoding method and still image data compression-encoded by a predetermined still image compression encoding method; Separating means for separating the moving image data compressed and encoded by the reproduced moving image compression encoding method and the still image data compressed and encoded by the still image compression encoding method; A playback device comprising: 8. The recording medium according to claim 1, wherein said moving image data compressed and encoded by an inter-frame predictive encoding system of MPEG2 standard and said still image data compressed and encoded by an intra-frame predictive encoding system of JPEG standard 8. The reproducing apparatus according to claim 7, wherein are recorded in a multiplexed manner. 9. The recording medium according to claim 1, wherein said still image data for a plurality of frames compressed and encoded by said moving image compression encoding system and compression encoded by said still image compression encoding system are stored. The still image data of one frame is multiplexed and recorded, and the reproducing unit is configured to encode the plurality of frames compressed and encoded by the moving image compression encoding method multiplexed and recorded from the recording medium. The still image data and the one frame of the still image data compressed and encoded by the still image compression encoding method are reproduced, and the separation unit is configured to reproduce the still image data for the moving image reproduced by the reproduction unit. The plurality of frames of the still image data compression-encoded by the compression encoding method of FIG. Claim 7, characterized in that the separation of the reduction has been the one frame the still image data
A playback device according to claim 1. 10. A moving image data which is multiplexed and recorded on a predetermined recording medium and is compression-encoded by a predetermined moving image compression encoding system and a compression code by a predetermined still image compression encoding system. A first step of reproducing the converted still image data, the moving image data compressed and encoded by the moving image compression encoding method reproduced in the first step, A second step of separating the still image data compressed and encoded by the compression encoding method from the still image data. 11. The method according to claim 1, wherein in the first step, the moving image data and the J data compressed and encoded on the recording medium by the inter-frame predictive encoding method of the MPEG2 standard are used.
11. The reproducing method according to claim 10, wherein the still image data compressed and encoded by the intra-frame predictive encoding method of the PEG standard is multiplexed and recorded. 12. In the first step, the still image data and the still image for a plurality of frames, which are multiplexed and recorded on the recording medium and are compression-encoded by the moving image compression-encoding method. Reproducing the still image data for one frame that has been compression-encoded by the compression encoding method for video, and in the second step, compressing the data by the compression encoding method for the moving image reproduced in the first step. 2. The method according to claim 1, wherein the encoded still image data for the plurality of frames is separated from the still image data for the one frame that is compression-encoded by the compression encoding method for the still image. The reproduction method according to claim 10. 13. A multiplexed moving image data compression-encoded by a predetermined moving image compression encoding system and still image data compression-encoded by a predetermined still image compression encoding system. A recording medium characterized by being recorded. 14. The moving picture data is compression-coded by an inter-frame predictive coding method of the MPEG2 standard, and the still picture data is compression-coded by an intra-frame predictive coding method of the JPEG standard. 14. The recording medium according to claim 13, wherein 15. The still image data of a plurality of frames compression-encoded by the moving image compression encoding method, and the one frame of the one frame compression-encoded by the still image compression encoding method. 14. The recording medium according to claim 13, wherein the still image data is multiplexed and recorded.