JPH08205086A - Disk shaped recording medium and reproducing device for disk shaped recording medium - Google Patents

Abstract

PURPOSE: To attain the reproduction in terms of so-called picture-card show on a monitor where a quasi-moving image with low resolution is displayed by using the image of intermediate resolution as an image frame. CONSTITUTION: In the image file system in which a still image and an audio signal corresponding to the still image are recorded, when a picture-card show recording mode designation key 23 is depressed, a control section 14 applies compression coding to image data of intermediate resolution of a monitor display size for, e.g. 5sec each and applies compression coding to image data with low resolution of a size being a half of monitor display size for each of 0.1sec and controls an image companding processing section 3 and a recording and reproducing section 12 to record the data. Furthermore, when a picture-card show reproduction mode designation key 27 is depressed, the control section 14 controls the recording and reproducing section 12 so as to read the image data of the intermediate resolution and the image data of low resolution. Then an image output processing section 4 superimposes the image data with low resolution data to the image data with intermediate resolution and gives the resulting data to a monitor or the like.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk-shaped recording medium recording apparatus and a disk-shaped recording medium reproducing apparatus suitable for use in a still camera device, an image file system, etc.
The present invention relates to a recording device for a disc-shaped recording medium and a reproduction device for a disc-shaped recording medium, which are capable of recording and reproducing not only still image data but also audio data and intermittent moving images to expand the applicable range.

[0002]

2. Description of the Related Art Conventionally, still image data of a still image read from a negative film, a photograph or the like by a scanner device, or moving image data supplied from a video tape recorder device or a camera device is recorded as still image data. In addition, there is known an image file system capable of recording several tens of seconds of audio data corresponding to this image data.

In this image file system, when still image data and audio data corresponding to the still image data are supplied from the scanner device, the still image data is converted into 1
Fixed-length compression coding is performed on a recording unit to randomly record the data on a magneto-optical disk, and audio data corresponding to the image data is randomly recorded on the magneto-optical disk.
Further, when moving image data and audio data are supplied from the video tape recorder device or the camera device, the image data is fixed-length compressed and encoded at the timing when the recording designation switch is turned on, and the optical data is recorded as still image data. Random recording is performed on the magnetic disk, and audio data for several tens of seconds is recorded on the magneto-optical disk.

The still image data and audio data recorded on the magneto-optical disk are alternately read at the time of reproduction,
For example, they are supplied to the monitor device and the speaker device, respectively. As a result, an image corresponding to the still image data is displayed on the display screen of the monitor device, and a sound output corresponding to the display image can be obtained via the speaker device.

[0005]

However, since the image file system is premised on being used by general users, it is desired to provide it at a reasonable selling price. Therefore, the conventional image file system cannot be provided with a large-scale image compression device necessary for recording a moving image, and a still image can be recorded but a moving image cannot be recorded.

The present invention has been made in view of the above-mentioned problems, and can record and reproduce still images and moving images, and at the same time, can reduce the manufacturing cost and provide the disk-shaped recording medium at low cost. It is an object of the present invention to provide a recording device and a reproducing device for a disc-shaped recording medium.

[0007]

A disk-shaped recording medium recording apparatus according to the present invention comprises a still image mode designating means for designating a still image mode in which image data supplied from the outside is recorded as a still image. An intermittent recording mode designating unit for designating an intermittent recording mode in which image data supplied from the outside is intermittently recorded at predetermined intervals. Further, a first compression rate for compressing and encoding the image data supplied from the outside in a predetermined recording unit, and a plurality of image data of the image data supplied from the outside in the predetermined recording unit. The second encoding processing is performed so that
Compression encoding means capable of switching the compression rate of
A recording unit that records the image data that has been compression-encoded by the compression encoding unit on a disk-shaped recording medium.
Further, when the still picture mode is designated by the still picture mode designating means, the compression rate of the compression coding means is switched and controlled so that the image data is compression coded at the first compression rate. When the recording means is controlled to record and the intermittent recording mode is designated by the intermittent recording mode designating means, the image data at every predetermined time is intermittently compression-encoded by the second compression rate. Further, it has a control means for switching and controlling the compression rate of the compression encoding means and for controlling the recording means so as to record this.

Further, the recording device for the disk-shaped recording medium according to the present invention has an audio data input means to which external audio data is supplied.

In this case, the control means records the voice data supplied via the voice data input means on the disc-shaped recording medium together with the image data to be recorded.

The disk-shaped recording medium recording apparatus according to the present invention also specifies a quasi-moving image mode for specifying a quasi-moving image mode in which image data supplied from the outside is intermittently recorded at an interval faster than the intermittent recording mode. Means and a third compression ratio of the compression encoding means, a plurality of pieces of image data are recorded in the predetermined recording unit of the image data supplied from the outside, and each of the image data is predetermined. And a compression rate for performing compression encoding processing so that the display size is reduced.

In this case, when the quasi-moving image mode is specified by the quasi-moving image mode specifying device, the control means intermittently reduces the image data at predetermined time intervals to a predetermined display size by the third compression ratio. The compression rate of the compression encoding means is controlled so as to be encoded and compression encoded, and the recording means is controlled to record this.

Next, the reproducing apparatus for a disk-shaped recording medium according to the present invention comprises still image data in which still images are recorded, and quasi-moving images in which moving images are intermittently reduced to a predetermined display size at predetermined intervals and recorded. Designates a disk-shaped recording medium on which data is recorded and a still image quasi-moving image playback mode in which a reduced image corresponding to the quasi-moving image data is displayed in a predetermined area in a display screen of the still image according to the still image data. And still image quasi-moving image reproduction designating means. In addition, the still image data and the quasi-moving image data are reproduced from the disc-shaped recording medium, and the reproducing means for superimposing and outputting the quasi-moving image data on the still image data, and the still image by the still image quasi-moving image reproduction designating means. When the semi-video playback mode is specified,
It has a control means for reproducing the still image data and the quasi-moving image data from the disc-shaped recording medium and controlling the reproducing means so as to output the quasi-moving image data by superimposing the quasi-moving image data on the still image data.

[0013]

In the disk-shaped recording medium recording apparatus according to the present invention, when the still picture mode is designated by the still picture mode designating means, the control means detects this and the compression rate of the compression coding means is the first. The compression rate of the compression encoding means is switched and controlled so as to obtain the compression rate.

The first compression rate is a high resolution compression rate such that reproduced image data can be used for printing, for example.

The compression coding means compresses the image data supplied from an external device such as a scanner device or a video camera device so as to have a fixed data length of 9 clusters with one recording unit as one cluster. Then, this is supplied to the recording means. The recording means records the image data compression-encoded at the first compression rate on a disk-shaped recording medium such as a magneto-optical disk or a magnetic disk.

When the intermittent recording mode is designated by the intermittent recording mode designating means, the control means detects the intermittent recording mode, and the compression coding means makes the compression rate equal to the second compression rate. The compression ratio of the conversion means is switched and controlled.

The second compression rate is, for example, an intermediate resolution compression rate at which reproduced image data can be displayed on a monitor device at a normal resolution.

The compression encoding means intermittently, at predetermined time intervals, image data supplied from the outside, and
A compression encoding process is performed so that a fixed data length of one cluster, which is one recording unit, is obtained, and this is supplied to the recording means. The recording means records the compression-encoded image data on the disk-shaped recording medium.

To record a moving image, a large-scale compression encoding means is required. However, since the recording device for the disc-shaped recording medium records intermittently at the above-mentioned predetermined time, It is possible to record a simple moving image by the compression encoding means having a simple structure.

Next, the disk-shaped recording medium recording apparatus according to the present invention has, for example, audio data input means for audio data supplied together with image data from a microphone device or the above video camera device, and the above control is performed. The means records the audio data together with the image data to be recorded on the disk-shaped recording medium.

Thus, the recording device for the disc-shaped recording medium can be used as a video camera device.

Next, in the disk-shaped recording medium recording apparatus according to the present invention, when the quasi-moving image mode is designated by the quasi-moving image mode designating unit, the control unit detects the designation and the compression encoding unit is set to the first position. The compression ratio is controlled to be 3.

The third compression ratio is such a low resolution compression ratio that it is possible to record a plurality of image data in one cluster, for example.

The compression encoding means changes the image data supplied from the outside to a normal display size of 1 intermittently at predetermined intervals at an interval faster than in the intermittent recording mode.
Then, it is compression-encoded so as to have a reduced size of about 1/4 of this, and this is supplied to the recording means.

As a result, although it is possible to record a moving image using the compression encoding means having the same simple structure as described above, it is possible to record a quasi-moving image which is closer to the moving image than the intermittent recording mode. Therefore, the recording device for the disc-shaped recording medium can be used more like a video camera device.

Next, the reproducing apparatus for the disk-shaped recording medium according to the present invention is such that the intermediate resolution image data recorded in the intermittent recording mode and the low resolution image data recorded in the above quasi-moving image mode. A disc-shaped recording medium reproducing device capable of displaying an image displayed on a monitor device in a so-called picture-story-like manner by using the disc-shaped recording medium in which is recorded.

That is, when the still image quasi-moving image reproduction designating unit designates the still image quasi-moving image reproducing mode, the control unit of the reproducing apparatus detects the still image quasi-moving image reproducing mode, and the still image data from the disc-shaped recording medium is detected. And controlling the reproducing means to reproduce the quasi-moving image data.

The reproducing means superimposes the quasi-moving image data on the still image data and supplies it to the monitor device.

As described above, the display size of the quasi-moving image data is reduced. Therefore, for example, if a quasi-moving image of the quasi-moving image data is displayed in a substantially central region of the still image of the still image data, the quasi-moving image is displayed in the center of the still image as an image frame. It can be used, and the range of application of the reproducing apparatus for the disc-shaped recording medium can be expanded.

[0030]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of a disk-shaped recording medium recording apparatus and a disk-shaped recording medium reproducing apparatus according to the present invention will now be described in detail with reference to the drawings.

The recording device and reproducing device for the disk-shaped recording medium according to the present invention can be applied to an image file system as shown in FIG. 1, for example.

In this image file system, an image input terminal 1 connected to, for example, a scanner device, a video tape recorder device, a camera device or the like, and image data from the image input terminal 1 is subjected to predetermined image input processing and output. Image input processing unit 2 for performing compression / expansion processing on the image data supplied via the image input processing unit 2 and the image data reproduced by the recording / reproducing unit 12, and the compression ratio is switchable. It has a decompression processing unit 3 and an image output processing unit 4 which performs a predetermined image output process on the image data from the image compression / decompression processing unit 3 and outputs the image data.

Further, the image file system has a voice input terminal 6 connected to, for example, a microphone device, the video tape recorder device, or a camera device, and voice data supplied via the voice input terminal 6. A voice input processing unit 7 for performing a predetermined voice input process, voice data from the voice input processing unit 7, and the recording / playback unit 1
The audio compression / expansion processing unit 8 which compresses / expands the audio data reproduced by 2 and is capable of switching the compression ratio.
And an audio output processing unit 9 that performs a predetermined audio output process on the audio data from the audio compression / decompression processing unit 8.

The image file system records and reproduces the image data from the image compression / expansion processing unit 3 in the image file system.
2 and vice versa, the image data from the recording / reproducing unit 12 is supplied to the image compression / expansion processing unit 3 and the audio data from the audio compression / expansion processing unit 8 is supplied to the recording / reproduction unit 12, Conversely, a recording / reproducing interface 11 for supplying the audio data from the recording / reproducing unit 12 to the audio compression / decompression processing unit 8 and a recording / reproducing unit 12 for recording / reproducing the image data and the audio data on, for example, a magneto-optical disk.
And have.

In the image file system, the image compression / expansion processing unit 3, the audio compression / expansion processing unit 8, the recording / reproduction are performed according to the input operation of the operation unit 13 provided with the plurality of operation keys 16 to 27. It has a control unit 14 for controlling the interface 11 and the recording / reproducing unit 12.

Next, the recording operation of the image file system according to this embodiment having such a configuration will be described.
The image file system is provided with a total of 6 recording modes including a still image recording mode, an intermittent recording mode, a semi-moving image recording mode, a still image / intermittent recording mode, a still image / semi-moving image recording mode and a picture-story recording mode. Therefore, at the time of recording, according to the flowchart shown in FIG. 2, it operates according to the recording mode selected from the above recording modes.

That is, the selection of the recording mode is as shown in FIG.
Still image recording mode designation key 18, intermittent recording mode designation key 19, semi-moving image recording mode designation key 20, still image / intermittent recording mode designation key 21, still image /
This is performed by turning on the semi-moving image recording mode designating key 22 or the picture-story show recording mode designating key 23.

The still image recording mode is a mode for recording high resolution image data for a printer, for example, and the intermittent recording mode is a mode for recording intermediate resolution image data for monitor display every predetermined time. The quasi-moving image mode is a mode in which a quasi-moving image is recorded by recording low-resolution image data for monitor display at a faster interval than in the intermittent recording mode. The still image / intermittent recording mode is a mode in which high-resolution image data is recorded at the timing when the shutter key 16 is turned on during the intermittent recording. This is a mode for recording high-resolution image data at the timing when the shutter key 16 is turned on during moving image recording, and the picture-story show recording mode is a mode for recording a quasi-moving image reduced to a predetermined display size.

In the image file system having each recording mode as described above, the flow chart shown in FIG. 2 is started by turning on the main power source of the image file system, and proceeds to step S1.

In step S1, the control unit 14 is operated.
Discriminates whether or not the still image recording mode designating key 18 of the operation unit 13 has been turned on. If YES, the process proceeds to step S8, and if NO, the process proceeds to step S2.

In the still image recording mode, the still image is taken in at the timing when the shutter key 16 of the operation unit 13 is turned on. For this reason,
In step S8, the control unit 14 determines whether or not the shutter key 16 is turned on, and if NO, repeats step S8, and if YES, step S8.
Proceed to 9. In step S9, the control unit 14
Each part is controlled so that a still image is recorded at the timing when the shutter key 16 is turned on.

That is, in the still image recording mode, the image data supplied from the scanner device or the video camera device is supplied to the image input processing section 2 via the image input terminal 1 shown in FIG. If there is voice data such as narration corresponding to the image data, this voice data is supplied to the voice input processing unit 7 via the voice input terminal 6.

The image input processing section 2 performs image input processing such as conversion of the image data into RGB three primary color data, or conversion into luminance data and color difference data, and the image compression / expansion processing. Supply to part 3.

Further, the voice input processing section 7 amplifies the voice data with an appropriate gain, performs limit processing for limiting processing above a predetermined level, and supplies this to the voice compression / decompression processing section 8.

When the still image recording mode is designated, the control unit 14 sets one recording unit to one cluster (64
Kbyte), the image data supplied to the image compression / expansion processing unit 3 includes 9 clusters (1024 pixels × 15).
The compression ratio of the image compression / decompression processing unit 3 is set and controlled so that the high-resolution image data having a fixed data length of 36 pixels) is subjected to the fixed-length compression coding. Then, the image compression / decompression processing unit 3 is controlled so that the fixed length compression encoding is performed at the timing when the shutter key 16 is turned on.

When the image compression / expansion processing unit 3 performs fixed length compression encoding of the image data to the fixed data length of 9 clusters based on the set compression ratio, the high resolution image data is imaged. The data is supplied to the output processing unit 4 and also supplied to the recording / reproducing unit 12 via the recording / reproducing interface 11.

When a printer is connected to the image output terminal 5, the image output processing unit 4 converts the high resolution image data into print data for yellow, magenta and cyan (Y, M, C). And is supplied to the printer device through the image output terminal 5. As a result, the printer device prints an image corresponding to the high-resolution image data.

On the other hand, when the shutter key 16 is turned on, the control unit 14 controls the audio compression / expansion processing unit 8 so as to perform highly efficient compression encoding of the audio data at this timing.

The audio compression / decompression processor 8 processes the audio data supplied from the audio signal input processor 7 at a timing, for example, 10 at the timing when the shutter key 16 is turned on.
It captures audio data for seconds, and uses it for band division coding (SBC: Sub-Band Coding) and adaptive transform coding (ATC: Adap).
High-efficiency compression encoding processing such as tiv Transform Coding) and adaptive bit allocation. Then, the audio data subjected to the high-efficiency compression encoding process in this way is processed by the audio output processing unit 9
And the recording / playback interface 1
It is supplied to the recording / reproducing unit 12 via 1.

The voice output processing section 9 subjects the voice data subjected to the high-efficiency compression coding processing to the reverse high-efficiency decompression decoding processing, and then analogizes the voice data, and outputs the voice signal via the voice output terminal 10. For example, it is supplied to a speaker device or the like.
As a result, it is possible to obtain an acoustic output corresponding to the audio data supplied from the video camera device, the microphone device, or the like via the speaker device.

The recording / reproducing unit 12 is a magneto-optical recording / reproducing apparatus for rotationally driving a magneto-optical disk 30 having a diameter of 64 mm as shown in FIG. 3 at a constant linear velocity and performing magneto-optical recording by a magnetic field modulation method. . The magneto-optical disk 30
Is a low-resolution image recording area 30A, an intermediate-resolution image recording area 30B, and a high-resolution image recording area 30 from the inner circumference side to the outer circumference side of the disc.
C, divided into four audio recording areas 30D for audio data.

The recording / reproducing unit 12 outputs the high resolution image data of the high resolution image of the high resolution image, which is supplied with the fixed length compression encoding process at the timing when the shutter key 16 is turned on. 9 in recording area 30C
Audio data such as narration corresponding to the image data supplied after being subjected to high-efficiency compression encoding processing is recorded in the audio recording area 30D while the clusters are continuously recorded.

Thus, in step S9,
When the image data and the audio data are recorded, the control unit 14 proceeds to step S7. In step S7, the control unit 14 determines whether or not all the image data and the audio data have been recorded by determining whether or not the stop key 17 provided in the operation unit 13 is turned on, for example. If YES, the routine shown in the flowchart of FIG. 2 is terminated. If NO, the process returns to step S1 and the above routine is repeated.

Next, the control unit 14 causes the step S
If it is determined in step 1 that the still image recording mode designating key 18 is not turned on and the process proceeds to step S2, the control unit 14 turns on the intermittent recording mode designating key 19 of the operating unit 13 in step S2. It is determined whether or not. Then, if YES, the process proceeds to step S10, and if NO, the process proceeds to step S3.

In step S10, since the intermittent recording mode designation key 19 is turned on, the control unit 1
4 controls the image compression / decompression processing unit 3 so that the compression rate is an intermediate resolution for monitor display, and the supplied image data and audio data are fixed length compression coded or high-level encoded every 5 seconds, for example. The image compression / decompression processing unit 3 and the audio compression / decompression processing unit 8 are controlled so as to perform efficient compression coding.

As a result, in the image compression / expansion processing unit 3, the image data supplied via the image input processing unit 2 is fixed-length compressed to the data length of one cluster of 512 pixels × 768 pixels every 5 seconds. The data is encoded and supplied to the recording / reproducing unit 12 via the image output processing unit 4 and the recording / reproducing interface 11. Further, in the audio compression / decompression processing unit 8, the audio data supplied via the audio input processing unit 7 is subjected to high-efficiency compression encoding processing every 2 seconds for 2 seconds and is supplied to the audio output processing unit 9. It is also supplied to the recording / reproducing unit 12 via the recording / reproducing interface 11.

When a monitor device is connected to the image output terminal 5, the image output processing section 4 carries out a fixed length decompression decoding process on the fixed length compression coded image data, and For example, it is converted into an NTSC television signal and supplied to the monitor device through the image output terminal 5. As a result, an image corresponding to the image data that has been subjected to the intermittent fixed-length compression encoding process can be displayed on the monitor device.

Further, the voice output processing section 9 forms a voice signal by subjecting the high-efficiency compression-encoded voice data to a high-efficiency expansion / decoding process and converting it into an analog signal, which is output to the output terminal 10. To the speaker device. As a result, it is possible to obtain a sound output according to the high-efficiency compression-encoded audio data via the speaker device.

On the other hand, when the recording / reproducing unit 12 is supplied with the intermediate resolution image data having the data length of one cluster and the audio data corresponding to the image data, the recording / reproducing unit 12 converts the intermediate resolution image data into the above-mentioned figure. The audio data is recorded in the recording area 30B for the intermediate resolution image data of the magneto-optical disk 30 shown in FIG. 3 in the order of taking-in, and the audio data is recorded in the audio data recording area 30D.

As described above, when the image data and the audio data are intermittently recorded in step S10, the control section 14 proceeds to step S7. Step S7
Then, the control unit 14 determines whether or not the intermittent recording of all image data and audio data has been completed by detecting whether or not the stop key 17 has been operated, and YES
In the case of, the routine shown in the flowchart of FIG. 2 is ended, and in the case of NO, the process returns to the step S1 and the above routine is repeated.

In order to record a moving image, a large-scale moving image compression device such as an MPEG device (Moving Picture Experts Group) is required, but image data (and audio data) thus supplied from the outside. Is recorded intermittently, it is possible to record a moving image, though it is an intermittent image, in the image file system. Further, since the image data is recorded intermittently, a large-scale moving image compression device such as the above-mentioned MPEG device is not required, and only the image compression device (the above-mentioned image compression / expansion processing unit 3) having a simple structure is provided. Therefore, the manufacturing cost can be suppressed, and it is possible to generally provide the image file system capable of recording a moving image to a user or the like at a reasonable price at a low cost.

Next, the control unit 14 causes the step S
When it is determined in step 2 that the intermittent recording mode designating key 19 is not turned on and the process proceeds to step S3, the control unit 14 turns on the semi-moving image recording mode designating key 20 of the operating unit 13 in step S3. It is determined whether or not. Then, if YES, the process proceeds to step S11, and if NO, the process proceeds to step S4.

In step S11, since the quasi-moving image recording mode designating key 20 is turned on, the control unit 14 controls the image compression / expansion processing unit 3 so that the compression ratio is low resolution for monitor display. At the same time, the image compression / decompression processing unit 3 is controlled so that the supplied image data is subjected to fixed-length compression encoding, for example, every 0.1 seconds (interval of 10 images per second). In addition to this, the control unit 1
4 controls the voice compression / decompression processing unit 8 so that the voice data is continuously subjected to high efficiency compression coding.

As a result, in the image compression / decompression processing unit 3, the image data supplied via the image input processing unit 2 is subjected to a fixed length compression encoding processing to a data length of 1/15 cluster every 0.1 seconds. Then, it is supplied to the recording / reproducing unit 12 via the image output processing unit 4 and the recording / reproducing interface 11. Further, in the audio compression / expansion processing unit 8, the audio data supplied via the audio input processing unit 7 is continuously subjected to high efficiency compression encoding processing and is supplied to the audio output processing unit 9, and the recording is also performed. It is supplied to the recording / reproducing unit 12 via the reproducing interface 11.

When a monitor device is connected to the image output terminal 5, the image output processing section 4 carries out a fixed length decompression decoding process on the image data (quasi moving image) which has been subjected to the fixed length compression coding process. At the same time, this is converted into, for example, an NTSC television signal and supplied to the monitor device through the image output terminal 5. As a result, a quasi-moving image corresponding to the low-resolution image data that has been subjected to the fixed-length compression encoding process can be displayed on the monitor device.

Further, the voice output processing section 9 forms a voice signal by subjecting the voice data which has been subjected to the high efficiency compression encoding process to a high efficiency expansion / decoding process to be converted into an analog signal, which is output to the output terminal 10. To the speaker device. Accordingly, it is possible to obtain the acoustic output corresponding to the quasi-moving image through the speaker device.

On the other hand, the recording / reproducing section 12 has
When low-resolution image data having a data length of 5 clusters and audio data corresponding to the image data are supplied,
The low-resolution image data is recorded in the recording area 30C for low-resolution image data of the magneto-optical disk 30 shown in FIG. 3 in the order in which it is captured, and the audio data is recorded in the audio data recording area 30D.

In this way, when the quasi-moving image and sound are recorded in step S11, the control section 14 proceeds to step S7. In step S7, the control unit 14 determines whether or not the semi-moving image recording of all image data and audio data has been completed by detecting whether or not the stop key 17 has been operated, and in the case of YES Ends the routine shown in the flowchart of FIG. 2, and if NO, returns to the step S1 and repeats the above routine.

In this quasi-moving image recording mode, image data is recorded at intervals shorter than in the intermittent recording mode, so that it is possible to record a quasi-moving image that is closer to a moving image. Therefore, the user only has to use the intermittent recording mode and the quasi-moving image recording mode depending on the case, and the convenience of the image file system can be improved.

Next, in step S3, it is determined that the quasi-moving image recording mode has not been designated, and step S3 is executed.
If the process proceeds to step S4, the control unit 14 proceeds to step S4.
4, it is determined whether or not the still image / intermittent recording mode designation key 21 has been turned on. If YES, the process proceeds to the still image / intermittent recording mode subroutine shown in FIG.
In the case of O, the process proceeds to step S5.

In the still image / intermittent recording mode, the intermittent recording is performed until the shutter key 16 is turned on, and a high-resolution still image is recorded at the timing when the shutter key 16 is turned on. Is. Therefore, the control unit 14 determines in step S20 of the subroutine shown in FIG. 4 whether or not the shutter key 16 is turned on. If YES, the process proceeds to step S22, and if NO, step S21. Proceed to.

In step S21, since the shutter key 16 is not turned on, the control unit 14
Controls the setting of the compression ratio of the image compression / expansion processing unit 3 to the compression ratio for the intermediate resolution, and performs the intermittent recording described above by the image compression / expansion processing unit 3, the audio compression / expansion processing unit 8, and the recording. The reproducing unit 12 and the like are controlled and the process proceeds to step S23.

In step S22, since the shutter key 16 is turned on, the control section 14 sets the compression rate of the image compression / expansion processing section 3 to a compression rate for high resolution, and so on. The image compression / decompression processing unit 3, the audio compression / decompression processing unit 8, the recording / reproducing unit 12 and the like are controlled so as to record an image, and the process proceeds to step S23.

In step S23, the control unit 14
Discriminates whether or not the recording end is designated by the stop key 17, and if YES, the subroutine shown in the flowchart of FIG. 2 is ended together with the subroutine shown in the flowchart of FIG. 4, and if NO, the above-mentioned Step S
20 to step S23 are repeated.

Next, at step S4, the still image
When it is determined that the intermittent recording mode has not been designated and the process proceeds to step S5, the control unit 14 determines the still image / quasi-moving image recording mode designation key 2 in step S5.
It is determined whether or not 2 is turned on, and in the case of YES,
The process proceeds to the subroutine for the still image / semi-moving image recording mode shown in FIG. 5, and if NO, the process proceeds to step S6.

In the still image / quasi-moving image recording mode, the above-described semi-moving image recording is performed until the shutter key 16 is turned on, and a high-resolution still image is recorded at the timing when the shutter key 16 is turned on. It is a mode to do.
For this reason, the control unit 14 sets the shutter key 16 in step S25 of the subroutine shown in FIG.
Is determined to have been turned on, the process proceeds to step S27 if YES, conversely the process proceeds to step S26 if NO.

In step S26, since the shutter key 16 is not turned on, the control unit 14
Controls the setting of the compression rate of the image compression / expansion processing section 3 to the compression rate for the low resolution, and performs the above-mentioned quasi-moving image recording, the image compression / expansion processing section 3, the audio compression / expansion processing section 8, The recording / reproducing unit 12 and the like are controlled and the process proceeds to step S28.

In step S27, since the shutter key 16 is turned on, the control unit 14 sets the compression rate of the image compression / expansion processing unit 3 to a high resolution compression rate. The image compression / expansion processing unit 3, the audio compression / expansion processing unit 8, the recording / reproducing unit 12 and the like are controlled so as to record an image, and the process proceeds to step S28.

In step S28, the control unit 14
Discriminates whether or not the recording end is designated by the stop key 17, and in the case of YES, the subroutine shown in the flowchart of FIG. 2 is ended together with the subroutine shown in the flowchart of FIG. 5; Step S
25 to step S28 are repeated.

Next, when it is determined in step S5 shown in FIG. 2 that the still image / quasi-moving image recording mode is not designated and the process proceeds to step S6, the control unit 14 is operated.
Determines whether or not the picture-story show recording mode (intermittent / semi-moving image recording mode) designating key 23 is turned on in step S6. If YES, the process proceeds to step S12, and if NO, the process proceeds to step S7.

The picture-story show recording mode is a mode in which the intermittent recording mode and the quasi-moving image recording mode are combined to reduce the display size when recording the quasi-moving image.

That is, in step S12,
The control unit 14 displays the image data supplied from the image input processing unit 2 in a display size (256 pixels × 3) that is half the normal monitor display size (512 pixels × 768 pixels).
The image compression is performed by switching between the compression rate of the quasi-moving image recording that reduces the resolution to 84 pixels) and the resolution of the quasi-moving image recording and the compression rate of the intermittent recording that reduces the resolution of the image data to an intermediate resolution with a normal monitor display size. The expansion processing unit 3 is set and controlled. When the image compression / expansion processing unit 3 is set to a compression rate for quasi-moving image recording, the image data is subjected to fixed-length compression encoding processing every 0.1 seconds, and the compression rate for intermittent recording is set. When set to, the image compression / expansion processing unit 3 is controlled so that the image data fixed length compression encoding processing is performed every 5 seconds.

Therefore, the image compression / decompression processing unit 3 is
The display size of the image data captured every 0.1 seconds is reduced to a fixed length compression encoding to a data length of 1/15 cluster to reduce the resolution, and the image data captured every 5 seconds is displayed in the normal display size. Then, the data length of one cluster is fixed-length compressed and encoded, and the intermediate resolution is output.

The recording / reproducing unit 12 records the low resolution image data in the low resolution recording area 30A of the magneto-optical disk as described above, and records the intermediate resolution image data in the intermediate resolution. Record in area 30B.

At the same time, the audio compression / decompression processing unit 8 continuously performs high-efficiency compression encoding processing on the audio data corresponding to each image data, and the recording / reproducing unit 12
Thus, the audio data is recorded in the recording area 30D of the magneto-optical disk 30.

At step S12, when such picture-story show recording mode is completed, the process proceeds to step S7.

In step S7, the control unit 14
However, by detecting whether or not the stop key 17 is turned on, it is determined whether or not recording of all images and sounds is completed. If YES, the routine of the flowchart shown in FIG. 2 is completed, If NO, the above routine is repeated.

As described above, the control unit 14 manages the image data and the audio data recorded on the magneto-optical disk 30 for each mode by using the management files shown in FIGS. 6 to 8. There is.

That is, in FIG. 6, the management file is a plurality of image data files (PIC0000.
PIC, PIC0001. PIC, PIC0002. P
IC ...) and one audio data file (SOU
ND. SND), an image / sound correspondence management file (PIC) that manages images and sounds corresponding to the images. NAR. I
MF) and these have a so-called directory tree structure as shown in FIG.

Each image data file is composed of each image data recorded for each resolution, and each image data is managed by, for example, an image number, a recording start address, a recording end address and the like. ing.

Further, as shown in FIG. 7, the audio data file is composed of a plurality of audio data (short-time audio) recorded corresponding to each of the images. Each of these short-time audio is managed by, for example, time, data amount, etc., and when reproducing a specific short-time audio from this file, a part of this short-time audio file must be read. It will be realized in.

Also, the image / audio correspondence management file is
For example, as shown in FIG. 8, an image number assigned to each image recorded on the magneto-optical disk 30, a recording start time (recording start address) and a recording end time (recording end) of a short time sound corresponding to this image. Address) and. When the image data is read, the short-time voice recording start address is accessed based on the image number of the image to be read, and the short-time voice corresponding to the image is reproduced.

As described above, a plurality of short-time voices are combined into a single file by concatenating temporally continuous data, and individual short-time voices are managed by time in the file. Regardless of the number of files,
It is possible to record and manage a large number of voices for a short time as long as the recording capacity allows.

Next, the operation of the image file system at the time of reproducing the image data and the audio data thus recorded will be described.

The image file system is provided with a total of four types of reproduction modes including a still image reproduction mode, an intermittent reproduction mode, a quasi-moving picture reproduction mode and a picture-story reproduction mode. The user selects a desired reproduction mode. 1, the still image reproduction mode designating key 24, the intermittent playback mode designating key 25, and the quasi moving image playback mode designating key 2 of the operation unit 13 shown in FIG.
6, or the picture-story show reproduction mode designation key 27 is turned on.

That is, for example, when a printer is connected to the image output terminal 5, the user designates a desired image based on, for example, the image number, and turns on the still image reproduction mode designation key 24. The control unit 14
Detects that the still image reproduction mode designation key 24 is turned on, and based on the above-mentioned image data file, the high resolution image data of the designated image number and the image / audio correspondence management. Based on the file and the audio data file, the recording / reproducing unit 12 is controlled to read the audio data corresponding to the image data from the magneto-optical disk 30.

As a result, the recording / reproducing unit 12 reads out the high-resolution image data of the designated image number from the high-resolution image data recording area 30C of the magneto-optical disk 30 and records it in the recording / reproducing interface. 1
1 to the image compression / decompression processing unit 3 via
Audio data corresponding to the image data is read from the audio data recording area 30D and supplied to the audio compression / decompression processing unit 8 via the recording / playback interface 11.

The image compression / expansion processing unit 3 performs fixed length expansion / decoding processing on the read image data and supplies it to the image output processing unit 4. The image output processing unit 4 converts the fixed-length decompression-decoded high-resolution image data into Y, M, and C print data, and supplies this to the printer device via the image output terminal 5. .
This allows the printer device to print an image corresponding to the high-resolution image data.

On the other hand, the voice compression / decompression processing unit 8 performs a high-efficiency decompression / decoding process on the voice data, and supplies this to the voice output processing unit 9. The voice output processing unit 9
Converts the voice data into an analog signal and supplies it to the speaker device via the voice output terminal 10. This allows
A sound output corresponding to the printed image can be obtained via the speaker device.

When printing an image, the sound data may be cut off without reproducing the audio data.

Next, when reproducing the intermittently recorded image, the user specifies a desired image based on, for example, the image number, and turns on the intermittent reproduction mode designating key 25.

When the intermittent reproduction mode designating key 25 is turned on, the control section 14 detects it and, based on the above-mentioned image data file, image data for the intermediate resolution of the designated image number, and , The audio data corresponding to the image data based on the image / audio correspondence management file and the audio data file.
The recording / reproducing unit 12 is controlled to read from the.

As a result, the recording / reproducing unit 12 reads the intermediate resolution image data of the designated image number from the intermediate resolution image data recording area 30B of the magneto-optical disk 30, and the recording / reproducing interface 30 reads it. The audio data corresponding to the image data is read from the audio data recording area 30D via the recording / reproducing interface 11 and supplied to the image compression / expansion processing unit 3 via the recording / reproducing interface 11. Supply to part 8.

The image compression / expansion processing unit 3 performs fixed length expansion / decoding processing on the read image data and supplies it to the image output processing unit 4. The image output processing unit 4 converts the fixed-length decompression-decoded intermediate-resolution image data into, for example, a television signal conforming to the NTSC system, and outputs this to a monitor device connected to the image output terminal 5. Supply. This allows the monitor device to display an image corresponding to the intermittently recorded intermediate resolution image data. In this case, since the image data is recorded intermittently, an intermittent moving image can be displayed on the monitor device.

On the other hand, the voice compression / decompression processing unit 8 performs high-efficiency decompression / decoding processing on the voice data and supplies it to the voice output processing unit 9. The voice output processing unit 9
Converts the voice data into an analog signal and supplies it to the speaker device via the voice output terminal 10. This allows
A sound output corresponding to the image displayed on the monitor device can be obtained via the speaker device.

Next, when reproducing the image recorded in the semi-moving image, the user designates a desired image based on, for example, the image number, and turns on the semi-moving image reproduction mode designation key 26.

When the quasi-moving image reproduction mode designating key 26 is turned on, the control section 14 detects it and, based on the above-mentioned image data file, low-resolution image data of the designated image number, Also, based on the image / audio correspondence management file and the audio data file, the audio data corresponding to the image data is recorded on the magneto-optical disk 30.
The recording / reproducing unit 12 is controlled to read from the.

As a result, the recording / reproducing unit 12 reads out the low-resolution image data of the specified image number from the low-resolution image data recording area 30A of the magneto-optical disk 30 and records it. 1
1 to the image compression / decompression processing unit 3 via
Audio data corresponding to the image data is read from the audio data recording area 30D and supplied to the audio compression / decompression processing unit 8 via the recording / playback interface 11.

The image compression / expansion processing unit 3 performs fixed length expansion / decoding processing on the read image data and supplies it to the image output processing unit 4. The image output processing unit 4 converts the fixed-length decompression-decoded low-resolution image data into, for example, a television signal conforming to the NTSC system, and outputs this to a monitor device connected to the image output terminal 5. Supply. This allows the monitor device to display an image corresponding to the low-resolution image data recorded in the quasi-moving image. In this case, since the image data is recorded at a shorter interval (10 frames per second) than the intermittent recording described above, a quasi-moving image can be displayed on the monitor device.

On the other hand, the voice compression / decompression processing unit 8 performs high-efficiency decompression / decoding processing on the voice data, and supplies this to the voice output processing unit 9. The voice output processing unit 9
Converts the voice data into an analog signal and supplies it to the speaker device via the voice output terminal 10. This allows
It is possible to obtain an acoustic output such as narration according to the image displayed on the monitor device via the speaker device.

Next, when reproducing the image recorded in the picture-story-play recording mode, the user designates a desired image on the basis of, for example, the image number, and turns on the picture-story-playing reproduction mode designation key 27.

When the picture-story show reproduction mode designation key 27 is turned on, the control section 14 detects it and, based on the above-mentioned image data file, the low-resolution image data of the designated image number, the intermediate image data. The recording / reproducing unit 12 is controlled so that the audio data corresponding to the image data is read from the magneto-optical disk 30 based on the image data of the resolution and the image / audio correspondence management file and the audio data file.

As a result, the recording / reproducing unit 12 causes the low resolution image data recording area 30A and the intermediate resolution image data recording area 30 of the magneto-optical disk 30 to be recorded.
The low-resolution image data of the designated image number and the intermediate-resolution image data are read from B, supplied to the image compression / expansion processing unit 3 via the recording / reproducing interface 11, and the recording area for the audio data is also provided. Three
Audio data corresponding to the image data is read from 0D and supplied to the audio compression / decompression processing unit 8 via the recording / reproducing interface 11.

The image compression / decompression processing unit 3 performs fixed length decompression / decoding processing on the read image data and supplies it to the image output processing unit 4.

As described above, in the picture-story-playing recording mode, the intermediate-resolution image data of the normal display size is intermittently recorded every 5 seconds, and the low-resolution image data has a display size of 1/2 the normal size. And is recorded every 0.1 seconds. Therefore, the image output processing unit 4 has 5
The intermediate-resolution image data of the normal display size is supplied every second, and the reduced-size low-resolution image data of the reduced size is supplied every 0.1 second.

The image output processing section 4 converts the image data of each resolution into a television signal conforming to the NTSC system, and when displaying these, the intermediate resolution image data is displayed as shown in FIG. Image is used as an image frame, and the low-resolution image data is superimposed on the intermediate-resolution image data so that the quasi-moving image of the low-resolution image data is displayed in a substantially central region thereof. Is supplied to the monitor device via.

On the other hand, the voice compression / decompression processing unit 8 performs a high-efficiency decompression / decoding process on the voice data, and supplies this to the voice output processing unit 9. The voice output processing unit 9
Converts the voice data into an analog signal and supplies it to the speaker device via the voice output terminal 10.

As a result, in the monitor device and the speaker device, an image corresponding to the image data of the intermediate resolution is used as an image frame, and a quasi-moving image is displayed in a substantially central region of the image frame, for example, to develop a story or the like. It is possible to perform picture-story play.

The image data and audio data of each resolution are divided and recorded in the recording areas 30A to 30D of the magneto-optical disk 30, respectively. Therefore, in each of the above reproduction modes, even when the designated image data and the audio data corresponding to the image data are reproduced, the seek time and the like in the recording / reproducing unit 12 can be shortened. (And recording time) can be shortened.

In the description of the above embodiment, a still image /
In the intermittent recording mode and the still image / quasi-moving image recording mode, a high resolution still image is recorded at the timing when the shutter key 16 is turned on.
The image data from the image input processing unit 2 may be stored in the memory at all times, and the image of the previous screen may be recorded at the timing when the shutter key 16 is turned on.

In the picture-story show recording mode, the quasi-moving image is recorded by reducing the display size to 1/2 of the normal display size. It is also possible to display an image frame indicating a range in which the image is to be recorded and record an image within the range specified by the image frame as a semi-moving image.

Further, in the picture-story show reproduction mode, the image recorded in the quasi-moving image is displayed in the substantially central area of the display area. This displays the quasi-moving image on the display screen of the monitor device. An image frame for designating an area may be generated, and the area for displaying the quasi-moving image may be designated by this image frame.

In addition, in the above-mentioned quasi-moving image recording, images are recorded at intervals of 10 sheets per second, but this can be changed appropriately according to the system, such as 15 sheets or 20 sheets. Alternatively, the user may arbitrarily set it.

In the above description of the embodiments, the disc-shaped recording medium recording device and disc-shaped recording medium reproducing device according to the present invention are applied to an image file system using a magneto-optical disc. This is also possible with an image file system using another disk-shaped recording medium such as a magnetic disk, and of course, various modifications can be made without departing from the technical idea of the present invention. Is.

[0125]

The recording device for a disk-shaped recording medium according to the present invention is capable of recording image data of a still image and, in the intermittent recording mode, records intermittently at predetermined intervals. Therefore, a simple moving image can be recorded by the compression encoding means having a simple structure.

Therefore, one recording device can be used for various purposes and the range of application can be expanded.
By providing the compression-encoding means having the above-described simple structure, cost increase can be suppressed, and the cost of the recording device can be reduced. Further, audio data can be recorded together with the image data, and the recording device can be used as a video camera device.

Further, since the image data supplied from the outside can be compression-encoded and recorded so as to have a predetermined reduced size intermittently at predetermined intervals at intervals faster than in the intermittent recording mode. Further, it is possible to further reduce the burden on the compression encoding and further reduce the cost of the recording apparatus. Therefore, it is possible to provide to a general user at a reasonable selling price.

Next, in the disc-shaped recording medium reproducing apparatus according to the present invention, the display size is reduced in a predetermined area in the display area in which the still image of the still image data is displayed. Video can be displayed.

Therefore, for example, if a quasi-moving image of the quasi-moving image data is displayed in a substantially central region of the still image of the still image data, the quasi-moving image is displayed in the center of the still image as an image frame. It can be used like a picture-story show, and the applicable range of the reproducing apparatus for the disc-shaped recording medium can be expanded.

[Brief description of drawings]

FIG. 1 is a block diagram of an embodiment in which a disk-shaped recording medium recording apparatus and a disk-shaped recording medium reproducing apparatus according to the present invention are applied to an image file system.

FIG. 2 is a flowchart showing an operation in each recording mode in the image file system according to the above embodiment.

FIG. 3 is a schematic diagram of a magneto-optical disk in which a recording area provided in the image file system according to the above embodiment is divided.

FIG. 4 is a flowchart showing an operation in the still image / intermittent recording mode of the image file system according to the embodiment.

FIG. 5 is a flowchart showing an operation of the image file system according to the above embodiment in a still image / semi-moving image recording mode.

FIG. 6 is a diagram for explaining a management file of the image file system according to the above embodiment.

FIG. 7 is a diagram for explaining an audio data file of the image file system according to the above embodiment.

FIG. 8 is a diagram for explaining an image / audio correspondence management file of the image file system according to the embodiment.

FIG. 9 is a schematic diagram for explaining a display state in a picture-story show reproduction mode of the image file system according to the embodiment.

[Explanation of symbols]

 1 image input terminal 2 image input processing unit 3 image compression / expansion processing unit 4 image output processing unit 5 image output terminal 6 audio input terminal 7 audio input processing unit 8 audio compression / expansion processing unit 9 audio output processing unit 10 audio output terminal 11 recording Playback interface 12 Recording / playback unit 13 Operation unit 14 Control unit 16 to 27 Each operation key

Claims (4)

[Claims] 1. A still image mode designating unit for designating a still image mode in which externally supplied image data is recorded as a still image, and image data externally supplied is intermittently recorded at predetermined intervals. Intermittent recording mode designating means for designating an intermittent recording mode, a first compression rate for compressing and coding the externally supplied image data in a predetermined recording unit, and the externally supplied image data Compression encoding means for compressing and encoding so that a plurality of pieces of image data are recorded in the predetermined recording unit, the compression encoding means capable of switching the second compression rate, and the compression encoding processing by the compression encoding means. When the still image mode is designated by the recording means for recording the image data thus obtained on the disk-shaped recording medium and the still image mode designating means, the image data is obtained at the first compression ratio. When the compression ratio of the compression encoding means is controlled to be compressed and encoded, the recording means is controlled to record this, and the intermittent recording mode is designated by the intermittent recording mode designating means, Control for switching and controlling the compression rate of the compression encoding means so that the image data for every predetermined time is intermittently encoded by the second compression rate, and controlling the recording means for recording this. A recording device for a disk-shaped recording medium having a means. 2. An audio data input means to which audio data from the outside is supplied, wherein the control means includes the disk, together with the image data to be recorded, of the audio data supplied via the audio data input means. 2. The recording device for a disk-shaped recording medium according to claim 1, wherein the recording means is controlled so as to record on the disk-shaped recording medium. 3. A quasi-moving image mode designating means for designating a quasi-moving image mode for intermittently recording image data supplied from the outside at an interval faster than the intermittent recording mode, and a third compression of the compression encoding means. As a ratio, the image data supplied from the outside is compressed in such a manner that a plurality of pieces of image data are recorded in the predetermined recording unit and each of the image data is reduced to a predetermined display size. When the quasi-moving image mode is specified by the quasi-moving image mode specifying device, the control unit intermittently and predeterminedly sets the image data at predetermined time intervals by the third compression ratio. 6. The compression ratio of the compression coding means is controlled so as to be reduced to the display size and compressed and coded, and the recording means is controlled to record this. Recording apparatus of a disc-shaped recording medium according. 4. A disk-shaped recording medium in which still image data in which a still image is recorded and semi-moving image data in which a moving image is intermittently reduced at a predetermined interval and reduced to a predetermined display size and recorded are recorded. Still image quasi-moving image reproduction designating means for designating a still image quasi-moving image reproduction mode for displaying a reduced image corresponding to the quasi-moving image data in a predetermined area in a display screen of a still image corresponding to image data The still image data and the quasi-moving image data are reproduced from the recording medium, and the reproducing means for superimposing the quasi-moving image data on the still image data and outputting the same. When specified, the still image data and the quasi-moving image data are reproduced from the disc-shaped recording medium, and the quasi-moving image data is superimposed and output on the still image data. Reproducing apparatus of a disc-shaped recording medium and a control means for controlling said reproducing means.