JP2003141735A - Video recording device and video reproducing device - Google Patents

Abstract

(57) [Summary] [PROBLEMS] When recording on different types of disk media using a recording laser, a suitable recording laser power differs depending on the type of the disk media. Kind Code: A1 A loaded recording medium is identified (pickup, playback circuit, signal / control processing circuit, control microcomputer), and a recording (and playback) transfer rate is automatically set according to each medium. Means (control microcomputer 16
28, signal / control processing circuit 24, D-RAM 15, recording circuit 29, pickup 31, disk medium 32)
And disk rotation speed setting means (control microcomputer 16
28, a signal / control processing circuit 24, an actuator driver 35, and a spindle motor 33). According to the present invention, a suitable recording (and reproducing) transfer rate and a disk rotation speed can be automatically set according to the type of recording medium to be loaded.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a video recording device or a video reproducing device for recording or reproducing video information,
In particular, the present invention relates to a video recording device or a video reproducing device that switches a media recording transfer rate or a disk rotation speed according to a recording medium or a recording video signal compression method.

[0002]

2. Description of the Related Art A conventional device is disclosed in Japanese Patent Laid-Open No. 2000-3153.
As described in Japanese Patent Publication No. 55-55, various disc media are discriminated, and control for reproduction and recording corresponding to each media is performed. In particular, as a disk medium that handles video signals,
For example, there are a DVD-ROM for reproduction only, a DVD-R for a write-once type only once, and a DVD-RW and a DVD-RAM for rewritable media.

Further, according to the description of Japanese Patent Application Laid-Open No. 2001-110053, when performing high-speed recording on a disk medium, the recording power of a recording laser is further required. Furthermore, Japanese Patent Laid-Open No. 2000-155945
The description of the publication describes the relationship between the ratio of the recording power and the erasing power at the time of multi-speed recording on the phase change type optical recording medium.

[0004]

The above-mentioned prior art does not consider the recording transfer rate for each disk medium, and has a problem in constructing a recording / reproducing system suitable when each disk medium is used. It was

An object of the present invention is to provide a recording / reproducing system suitable for recording / reproducing video information on / from various disc media.

[0006]

In order to achieve the above object, in a video recording apparatus that accepts loading of a plurality of types of recording disk media, a medium identifying means for identifying the loaded recording disk medium, and the recording disk. A recording processing means for recording a signal containing video information on a medium and a recording transfer rate changing means for changing the recording transfer rate of the recording processing means according to the medium discriminating means are provided.

Further, in a video recording apparatus which accepts loading of a plurality of types of recording disk media, a medium determining means for determining the loaded recording disk medium, an image capturing means for capturing image information, and output information of the image capturing means are provided. Storage means for temporarily storing, recording processing means for recording a signal including the video information from the storage means, and recording transfer rate changing means for changing the recording transfer rate of the recording processing means according to the medium discriminating means. It is provided.

Further, in a video recording apparatus which accepts loading of a plurality of types of recording disk media, a medium identifying means for identifying the loaded recording disk medium, and a signal containing image information by irradiating the recording disk medium with light. When the amount of light to be irradiated is different depending on the recording processing means for recording and the reference recording transfer rate of each type of recording disk medium,
Recording transfer rate changing means for changing the recording transfer rate of at least one kind of recording disk medium so that the amount of light irradiating each recording disk medium becomes substantially closer to each other. Is provided.

In order to achieve the above object, in a video recording apparatus which accepts loading of a plurality of types of recording disk media, a medium identifying means for identifying the loaded recording disk medium and the recording disk medium include video information. Recording processing means for recording a signal and rotation speed switching means for changing the rotation speed of the recording disk medium according to the medium discriminating means at the time of recording are provided.

Further, in a video recording apparatus which accepts loading of a plurality of types of recording disk media, a medium identifying means for identifying the loaded recording disk medium, an image capturing means for capturing image information, and output information of the image capturing means. Storage means for temporarily storing, recording processing means for recording a signal including the video information from the storage means, and rotation speed switching means for changing the rotation speed of the recording disk medium according to the medium discriminating means at the time of recording. Is provided.

Further, in a video recording apparatus which accepts loading of a plurality of types of recording disk mediums, a medium discriminating means for discriminating the loaded recording disc mediums and a signal containing image information by irradiating the recording disc medium with light. When the amount of light to be irradiated differs depending on the recording processing means for recording the recording disk medium and the reference rotation speed of each type of recording disk medium, the amount of light irradiated to each recording disk medium by changing the rotation speed of at least one type of recording disk medium. So that the rotation speeds of the various kinds of recording disk media are changed so as to substantially approach each other.

The plurality of types of recording disk media include at least a write-once disk and a rewritable disk. Further, the recording / transfer rate changing means is adapted to select a recording / transfer rate that is higher in the rewritable disc than in the write-once disc. Further, the rotation speed switching means is adapted to select a higher rotation speed for the rewritable disc than for the write-once disc.

The plurality of types of recording disk mediums include at least a pigment-based disk and a phase-change disk. Further, the recording / transfer rate changing means is adapted to select a higher recording / transfer rate for the phase change type disc than for the dye type disc. Further, the rotation speed switching means is adapted to select a higher rotation speed for the phase change type disc than for the pigment type disc.

Further, the plurality of types of recording disk media include at least a DVD-RAM disk and a DVD-R disk. Further, the recording transfer rate changing means is a DVD-R disc rather than a DVD.
-RAM disk is adapted to select a higher recording transfer rate. Further, the rotation speed switching means is adapted to select a higher rotation speed for the DVD-RAM disc than for the DVD-R disc.

In order to achieve the above object, a medium discriminating means for discriminating the loaded disc medium in a video reproducing apparatus which accepts loading of plural types of disc mediums,
Reproduction processing means for reproducing a signal including video information from the disk medium, and reproduction transfer rate changing means for changing the reproduction transfer rate of the reproduction processing means according to the medium discriminating means.

Further, in a video reproducing apparatus which accepts loading of a plurality of types of disc media, a medium discriminating means for discriminating the loaded disc medium, and a reproducing processing means for reproducing a signal including video information from the disc medium, Storage means for temporarily storing the output information of the reproduction processing means, display means for displaying the video information from the storage means, and reproduction transfer for changing the reproduction transfer rate of the reproduction processing means according to the medium discriminating means. A rate changing means is provided.

Further, in a video reproducing apparatus which accepts loading of a plurality of types of disc media, a medium discriminating unit for discriminating the loaded disc medium, and a reproducing processing unit for reproducing a signal including video information from the disc medium, At the time of reproduction, rotation speed switching means for changing the rotation speed of the disk medium is provided according to the medium discriminating means.

In order to achieve the above object, a medium discriminating means for discriminating the loaded disc medium in an image reproducing apparatus which accepts loading of plural types of disc mediums,
Reproduction processing means for reproducing a signal including video information from the disk medium, storage means for temporarily storing output information of the reproduction processing means, display means for displaying the video information from the storage means, and reproduction means for reproducing the video information. Rotation speed switching means for changing the rotation speed of the disk medium is provided according to the medium discriminating means.

Furthermore, the plurality of types of disk media are
At least a write-once disc and a rewritable disc are included. Further, the reproduction transfer rate changing means is adapted to select a reproduction transfer rate that is higher in the rewritable disc than in the write-once disc. Further, the rotation speed switching means is adapted to select a higher rotation speed for the rewritable disc than for the write-once disc. Further, the plurality of types of disc media include at least a pigment type disc and a phase change type disc. further,
The reproduction transfer rate changing means is adapted to select a higher recording transfer rate for the phase change type disc than for the dye type disc. Further, the rotation speed switching means is adapted to select a higher rotation speed for the phase change type disc than for the pigment type disc. Further, the plurality of types of disc media include at least a DVD-RAM disc and a DVD-R disc. Further, the reproduction transfer rate changing means is a DVD-R disc rather than a DVD.
A RAM disk is adapted to select a higher playback transfer rate. Further, the rotation speed switching means is adapted to select a higher rotation speed for the DVD-RAM disc than for the DVD-R disc.

In order to achieve the above object, in a video recording apparatus for recording video information on a disc medium that can be inserted and removed,
A first recording mode in which recording processing means for recording a signal including the video information is recorded on the disk medium, and the recording processing means operates at a first recording transfer rate; And a second recording mode that operates at a second recording transfer rate different from the above.

Further, in a video recording apparatus for recording video information on an insertable / detachable disk medium, an image pickup means for taking in the image information, a storage means for temporarily storing output information of the image pickup means, and a disk medium from the storage means. Recording processing means for recording a signal containing the video information, wherein the recording processing means operates at a first recording transfer rate, and the recording processing means differs from the first recording mode. A second recording mode that operates at the second recording transfer rate is provided.

Further, in a video recording apparatus for recording video information on an insertable / detachable disk medium, a recording processing means for recording a signal containing the video information on the disk medium is provided, and the disk medium is operated at a first rotation speed. A first recording mode in which the recording medium is rotated and recorded by the recording processing means, and a second recording mode in which the disk medium is rotated at a second rotational speed different from the first recording by the recording processing means. It is provided.

Further, in a video recording apparatus for recording video information on an insertable / detachable disk medium, an imaging means for capturing the imaging information, a storage means for temporarily storing the video information output from the imaging means, and the storage means. A recording processing means for recording a signal containing the video information on a disk medium, and a first recording mode for rotating the disk medium at a first rotation speed for recording by the recording processing means; A second recording mode is provided in which the recording processing means rotates at a second rotational speed different from the first rotational speed for recording.

Further, in the first recording mode and the second recording mode, the video information is recorded by using signals compressed at different compression rates. Furthermore, in the first recording mode and the second recording mode,
The video information is preferably recorded by using a signal compressed by a different compression method. Further, the compression method is such that a fixed bit rate or a variable bit rate is set.

In order to achieve the above object, in a video reproducing apparatus for reproducing video information from a disc medium that can be inserted and removed, a reproduction processing means for reproducing a signal containing the video information from the disc medium is provided, and the reproduction processing is performed. A first reproduction mode in which the means operates at a first reproduction transfer rate, and a second reproduction mode in which the reproduction processing means operates at a second reproduction transfer rate different from the first reproduction mode are provided. .

Further, in a video reproducing apparatus for reproducing video information from an insertable / detachable disk medium, a reproduction processing means for reproducing a signal including the video information from the disk medium, and a storage for temporarily storing output information of the reproduction processing means. Means and
Display means for displaying the video information from the storage means, and a first reproduction mode in which the reproduction processing means operates at a first reproduction transfer rate, and the reproduction processing means is different from the first reproduction mode. A second reproduction mode that operates at the second reproduction transfer rate is provided.

Further, in the video reproducing apparatus for reproducing the video information from the disc medium which can be inserted / removed, the reproduction processing means for reproducing the signal containing the video information from the disc medium is provided, and the disc medium is operated at the first rotation speed. A first reproduction mode in which the disk is rotated and reproduced by the reproduction processing means and a second reproduction mode in which the disk medium is rotated at a second rotation speed different from the first and reproduced by the reproduction processing means. It is provided.

Further, in a video reproducing apparatus for reproducing video information from an insertable / detachable disk medium, reproduction processing means for reproducing a signal containing the video information from the disk medium,
The reproduction processing means comprises: a storage means for temporarily storing output information of the reproduction processing means; and a display means for displaying the video information from the storage means. The disk medium is rotated at a first rotation speed by the reproduction processing means. There is provided a first reproduction mode for reproducing and a second reproduction mode for rotating the disk medium at a second rotation speed different from the first and reproducing by the reproduction processing means.

Furthermore, one of the above video recording devices is
The configuration is such that a video signal is recorded from the camera imaging device.

Further, any one of the above video recording apparatus and video reproducing apparatus is adapted to record or reproduce video information of an information processing apparatus having an information transmission line interface.

Further, it is integrated with a monitor device for displaying a reproduction signal from any one of the above video reproducing devices.

[0032]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to FIG. 1 and Tables 1 and 2. FIG. 1 shows a camera-integrated recording / reproducing apparatus using a disk recording medium. In FIG. 1, 1 is a microphone, 2 is an audio input processing circuit, 3 is an audio output circuit, 4 is an audio output terminal, 5 is a lens unit, 6 is an image sensor (CCD), 7 is a camera video signal processing circuit, and 8 is Video / audio compression / expansion processing circuit, 9 video display / output processing circuit, 10 display means (LCD), 11 driver of lens unit 5, 12
Is a digital audio / video input terminal, 13 is a digital interface processing circuit, 14 is a digital output terminal, 15 is a D-RAM, 16 is a control microcomputer for the entire apparatus, 17 is a flash memory (F-RAM), and 18 is an operation of the apparatus. Switches (SW), 19 are interface circuits, 20 is an external power input terminal, 21 is a charging circuit, 22 is a battery,
Reference numeral 23 is a power supply circuit (DC-DC converter), 24 is a signal / control processing circuit of the disk medium, and 25 is D-RA.
M, 26 are S-RAM, 27 is a flash memory (F-
RAM), 28 is a control microcomputer of the recording / reproducing unit, 29 is a recording circuit, 30 is a reproducing circuit, 31 is a pickup for recording / reproducing on / from a medium, 32 is a disk medium, 33 is a spindle motor, 34 is a pickup 31 on the disk medium. Is a feed motor for moving the actuator, 35 is an actuator driver for driving the spindle motor 33, the feed motor 34, and actuators (not shown) in the focus direction and the tracking direction in the pickup 31, respectively, 36 is a video output terminal, 38 is a camera unit, 39 is an output unit, 40 is a control unit, and 41 is a recording / reproducing unit.

The operation of the camera unit 38 will be described first. The image information is converted into an electric signal by the image sensor 6 via the lens unit 5 driven by the driver 11, and converted into a video signal by the camera video signal processing circuit 7. On the other hand, the voice is converted into a voice signal by the audio input processing circuit 2 via the microphone 1.

Next, the operation of the output section 39 will be described. The above signal is converted into a digital video / audio compression signal by the video / audio compression / expansion processing circuit 8. As a compression method, an MPEG method that handles moving images, a JPEG method that handles still images, or the like is implemented. Also, digital audio / video input terminal 1
From 2, the input information from the outside can be switched and handled. As output means, an audio signal from the video / audio compression / expansion processing circuit 8 is output to the audio output terminal 4 via the audio output circuit 3. The video signal is displayed on the display means 10 via the video display / output processing circuit 9 and, at the same time, is output from the video output terminal 36. further,
A digital video / audio signal is output from the digital output terminal 14 via the digital interface processing circuit 13. Here, the input signal and the output signal are described via the video / audio compression / expansion processing circuit 8. However, it is needless to say that these output signals do not necessarily have to be compressed / expanded for both the audio signal and the video signal. Yes.

Next, the operation of the control unit 40 will be described. This device operates when the user operates the operation switch 18. The output of the operation switch 18 is input to the control microcomputer 16 of the entire apparatus. The control microcomputer 16 is the driver 1
The lens unit 5 is controlled via 1 to capture a desired image of the subject on the image sensor 6. Further, the video / audio compression / expansion processing circuit 8 controls so that a moving image or a still image is compressed into a digital signal and temporarily stored in the D-RAM 15. These signals are sent to the signal / control processing circuit 24 of the disk type recording / reproducing apparatus via the interface circuit 19. As this interface circuit,
For example, the ATAPI standard is adopted. Further, the charging circuit 21 is monitored to grasp the power supply state, and the switch circuit 37 is controlled to perform power supply processing of the camera section. The flash memory 17 is a memory that stores a program or the like that operates the control microcomputer 16. The D-RAM 15 is a memory for temporarily storing the processing data of the video / audio compression / expansion processing circuit 8 and the processing data of the control microcomputer 16.

Finally, the operation of the recording / reproducing section 41 will be described. The recording / reproducing unit 41 converts the moving image or still image information input from the interface circuit 19 into a recording format corresponding to the disc medium by the signal / control processing circuit 24 and the D-RAM 25, and via the recording circuit 29 and the pickup 31. And record it on the disk medium 32. Also,
The relative position between the disc medium 32 and the pickup 31 is such that the pickup 31 performs a reproducing operation in a time division manner, and the position information previously written on the disc medium 32 is detected via the reproducing circuit 30, and the signal / control processing circuit is detected. 24
Then, it is processed by the control microcomputer 28, and drives the spindle motor 33 and the feed motor 34, which are actuators, and the actuator (not shown) for controlling focus and tracking in the pickup 31, through the actuator driver 35. By the way, S-
The RAM 26 and the flash memory 27 store temporary storage of calculation data of the control microcomputer 28 and programs.

Further, as a power source section, an external power source input terminal 20 is provided so that power can be supplied from the outside. In addition, the battery 22 is charged by the charging circuit 21 by the power supplied from the external power input terminal 20. As a result, when the external power supply is supplied, this power is supplied to each block via the power supply circuit 23, and when the external power supply is not connected, the power from the battery 22 is supplied to each block via the power supply circuit 23. Supply to the block.

Although the recording operation has been described above, almost the opposite operations are performed during reproduction. That is, the information on the disc medium 32 is detected from the disc medium 32 via the pickup 31 and the reproduction circuit 30, and the signal / control processing circuit 24 and the control microcomputer 28 demodulate the recording format according to the disc medium, and the interface circuit 19 Back to the video / audio compression / expansion processing circuit 8 via the, and the compressed video signal and audio signal are expanded here, and the display means 10 is supplied via the video display / output processing circuit 9 and the audio output circuit 3. And output to the audio output terminal 4 and the video output terminal 36. Also,
Information before expansion is output to the digital output terminal 14 via the digital interface processing circuit 13.

Here, as the disk medium 32 for handling the video signal, there are, for example, those shown in Table 1.

[0040]

[Table 1]

There are a DVD-ROM as a read-only type, a DVD-R as a write-once type only, and a DVD-RW and a DVD-RAM as rewritable media. As the recording format, for example, a video format (DVD Video format) and a video recording format (Video recording format) have been proposed.

The video format realizes unique functions such as multi-angle, parental reproduction, random shuffle reproduction, and fast-forward / rewind of video information that has been sufficiently edited in advance, such as movies. It has powerful information data to support trick play.

The video recording format is based on the premise that this rewritable disc is used in consideration of an application in which a video signal is recorded in real time without performing the editing process and the editing process can be easily performed after the recording.

Table 2 shows an example of the determination information of each medium as an example of the disc medium discriminating means.

[0045]

[Table 2]

For example, a first-generation DVD-R that can handle video signals and is assumed to have a rewriting endurance of 100,000 times.
AM disc (2.6 GB capacity) and second generation DVD-
A RAM (4.7 GB capacity) is a DVD whose reflectance is 15 to 25% and whose rewriting endurance is estimated to be about 1000 times.
The reflectance of the -RW disc is 18 to 30%, whereas the reflectance of the write-once DVD-R disc that records only once is 45 to 85%, which can be information for distinguishing between the two. Further, different information is written in advance as control data on each disc, and more accurate discrimination can be made by detecting this information.

These medium discriminating means detect the parameters shown in Table 2 from the disk medium 32 via the pickup 31 and the reproducing circuit 30 shown in FIG.
It is taken into the control microcomputer 28 via the control processing circuit 24. For example, the disc surface is irradiated with laser light from the pickup 31 and the reflectance thereof is measured to make a determination. Finally, different control data for each disc recorded on the inner circumference side of the disc (usually called a lead-in area) is detected and judged. This information is finally sent from the control microcomputer 28 to the signal / control processing circuit 2
Control microcomputer 1 via 4 and interface circuit 19
Collected of 6.

Also, the required recording laser power differs depending on the material used for the recording layer of each disk medium. In particular, a DVD-RAM which is a phase change recording medium,
There is a great difference between the DVD-RW disc medium and the DVD-R system which uses a pigment-based recording medium. However, the recording laser is an expensive component, and a system for recording with the same laser is conceivable.

At this time, the device is desired to have a higher writing speed to the disk medium. Therefore, if the recording power of the DVD-R has a margin with respect to the DVD-RAM (and the DVD-RW) as shown in Table 2, for example, a higher-speed recording mode is set.

It is generally known that when recording on a dye-based recording medium at different recording linear velocities, the recording power is approximately proportional to the square root of the recording linear velocity (for example,
(For example, Japanese Patent Laid-Open No. 2001-110053 mentioned above). That is, the recording power is Pw, the recording linear velocity is Lv, and the constant is K.
When set to 1, the recording power is calculated by Pw = K1√Lv. From this, based on the recording power of the DVD-RAM in Table 2 above, the DVD-R has a DV of 1.6 times the standard linear velocity of 3.49 m / s.
It is almost the same as the recording power of the D-RAM (12 mW =
9.5 mW√1.6).

Here, the flow of data at the time of recording video information of this apparatus will be described with reference to FIG. During normal camera recording, as shown in FIG. 2, a signal photographed by the camera unit 38 is compressed by the output unit 39 into a video / audio signal, and the photographed information 51 is obtained as a buffer memory (D-RAM1) in the control unit 40.
5) as buffer input 52. On the other hand, the recording / reproducing unit 41 loaded with the disk medium 32 drives the disk medium 32 at a recording transfer rate that is high enough to record the real-time image captured by the camera unit 38. In particular, when a portable device causes a state in which stable recording cannot be performed due to large vibration or the like, it is necessary to record the same information again at the same location on the disk medium 32 or at a different location. The buffer memory (D-RAM 25) is provided with a sufficiently large capacity, and the recording transfer rate on the disk medium 32 is the shooting information 51 which becomes the input signal.
Set higher for the rate. In FIG. 2, about twice is shown as an example. That is, the buffer memory (DR
The buffer output 53 from the AM 15) is read intermittently at a data rate about twice that of the buffer input 52, and this information is recorded on the disk medium 32. The ON / OFF state of the medium recording 54 at this time is in the recording state for about 1/2 period as shown in FIG.

This also applies to the above OF as a portable device.
Since power cannot be supplied to most of the recording / reproducing unit 41 during the period F, there is an advantage of ensuring a higher recording speed on the disk medium in terms of power saving of the entire apparatus. Therefore, as described above, it is necessary to select the linear velocity and the recording transfer rate of the disk medium so that the emission power of the recording laser can be utilized most efficiently for each disk medium.

Therefore, one characteristic embodiment of the present invention will be described with reference to FIG. That is, the disc medium 32 loaded in the apparatus is discriminated, and when the disc medium is discriminated as the DVD-R, the disc rotation speed is automatically set to the low speed mode (5.6 m / s). . In addition, the recording transfer rate at this time is set to the low speed mode (1
7.73 Mbps). On the other hand, DVD-RAM
When it is judged as a rewritable disc such as
Disk rotation speed is high speed mode (8.2-8.5m /
s). Further, the recording transfer rate at this time is set to the high speed mode (22.16 Mbps). By doing so, a recording mode suitable for each disk medium can be set.

In response to the result of the medium discriminating means, the disc rotation speed switching means issues an instruction to the signal / control processing circuit 24 from the control microcomputer 16 or 28, and the spindle motor 33 via the actuator driver 35.
To control.

Further, the recording transfer rate changing means receives the result of the medium discriminating means and receives the control microcomputer 16 or 2.
8 gives an instruction to the signal / control processing circuit 24 to change the reading speed of the video information from the buffer memory (D-RAM 15) and to transfer the video information to the disk medium 32 via the recording circuit 29 and the pickup 31. Record by switching the transfer rate.

Next, the processing at the time of reproduction will be described with reference to FIGS. The operation at the time of reproduction has been described above, but regarding the reading speed from the disk medium 32, it is conceivable that reading is performed together with recording as shown in FIG. 4, for example. That is, although the recording operation is the same as that in FIG. 2, it is conceivable to reproduce it as a recording confirmation function during recording. As shown by the medium operation 64 shown in FIG. 4, during the free time of the recording period, the recorded portion on the disk medium 32 is reproduced and displayed. For this display, for example, as shown in FIG. 5, a method is conceivable in which the reproduced image is reduced and displayed on a part of the image being recorded so as to be compatible with the display of the shooting angle. In such processing, the compression / expansion processing circuit 8 in FIG. 1 compresses the video from the camera unit 38 and supplies it to the recording / reproducing unit 41, and at the same time, expands the information 65 reproduced by the recording / reproducing unit 41. The image is reduced and combined with the photographing information 61 from the camera unit 38, and is displayed on the display means (LCD) 10 via the video display / output processing circuit 9.

Here, considering the medium operation 64, since the recording operation and the reproducing operation are alternately repeated, the disk medium 3
When the rotation speed of 2 is switched to this degree, the settling time for that becomes long and the ratio of the seek time (the time until the start of reading or the start of writing) becomes large and the efficiency of the medium operation decreases. Then, higher writing and reading speeds are required, but as described above, higher writing speed requires higher laser power output, which requires an expensive device.

Therefore, the most efficient operation of the system is achieved when the read speed is almost the same as the write speed. For the above reasons, the playback side disk media 32
It is effective for the system to set the reproduction transfer rate from the same as the recording transfer rate at the time of recording. Figure 4
In the above, an example is shown in which the recording and reproduction transfer rates on the disc medium 32 are approximately tripled with respect to the photographing information 62 and the read information 66.

As described above, also for reproduction, the medium discrimination of the disc medium 32 shown in FIG. 3 is performed similarly to the above recording, and the disc rotation speed and the reproduction velocity are automatically set according to the type of the medium. I do.

Another embodiment will be described with reference to FIG. In this figure, a DVD-RW is newly provided in comparison with FIG.
Support for media is added. Since a DVD-RW medium may have a lower rewriting resistance than a DVD-RAM medium, a disk medium has been developed which requires less laser recording power than a DVD-RAM. That is, using the same laser,
Even if recording is performed with the same power, a higher recording transfer rate is possible. Therefore, a DVD-RW disc medium has a D
A recording transfer rate (24.38 Mbps) higher than that of the VD-RAM disk medium is set. However, the disc rotation speed may be lower than that of the DVD-RAM depending on the standard. With these settings, it is possible to provide a device that can achieve the most power saving of the system for each disk medium.

Next, another embodiment of the present invention will be described with reference to Table 3 and FIG.

[0062]

[Table 3]

Table 3 shows an example of mode selection of photographed images at the time of photographing by the camera. As a video camera, still image recording (for example, JPEG compression) and moving image recording (for example, MPEG)
Compression) can be selected. For these operations, as the operation switch 18, for example, a “record” button for shooting a moving image and a “photo” button for shooting a still image are provided, and the control microcomputer 16 detects this operation and the above-mentioned video / audio compression / expansion processing circuit. It is realized by supplying a switching signal to the switch 8. Next, even in the moving image mode, a high image quality bit rate (10 Mbps in Table 3) to enable high image quality recording
And a standard bit rate (8 Mbps in Table 3) for enabling standard recording, and a low bit rate (6 Mbps in Table 3) that enables long-term recording even if the image quality is sacrificed.
There is a choice of s). Also, in order to achieve both high image quality and long-term recording, the captured image has a large amount of information (in a complicated pattern,
If the amount of information is small (such as images with a lot of motion), lower the compression rate. If the amount of information is small (such as images with little movement due to simple patterns), increase the compression rate to achieve a variable bit rate and always maintain high image quality. However, there is a variable bit rate compression mode that keeps the average bit rate low.

These settings generally provide a selectable menu screen operation using the operation switch 18, the control microcomputer 16 and the display means 10.

Further, although it has been described above that the disc rotation speed and the recording / reproducing transfer rate are switched appropriately according to the type of the disc medium, in the present example, for example, in the case of the DVD-RAM disc, the high rotation speed is used. It is also possible to operate at low rotation speeds and low transfer rates as well as high transfer rates. Therefore, the rotation speed or the transfer rate can be set during recording or reproduction.
For example, at the time of shooting, whether the user shoots in the standard mode or the long time mode is set by operating the operation switch 18, and this setting is determined in step 302 (ST302) of FIG. At the time of shooting, the low rotation speed and the low transfer rate are set, and when the shooting in the standard mode is selected, the high rotation speed and the high transfer rate are set.

By doing so, the high disk rotation speed (and high transfer rate) that is higher than necessary is not set when shooting in the long time mode, so that noise and vibration associated with disk rotation are reduced, for example. be able to.

Another embodiment will be described with reference to FIG. In the figure, a high image quality mode is added to the mode selection of FIG. 7. The parameters of each mode are basically set to the numerical values corresponding to each disk medium shown in Table 3 and FIG. These may be recorded using a disk medium compatible with each mode setting,
You may select and record using DVD-RW which can achieve the highest transfer rate.

Next, an embodiment in which the present invention is applied to another device will be described with reference to FIG. In the figure, the same reference numerals are given to the same and equivalent function parts as those of the configuration of FIG. 8
1 is an audio input terminal, 82 is a video input terminal, 83 is a tuner for receiving a broadcast signal, 84 is an audio input circuit, 85
Is a video input processing circuit, 86 is an operation switch, 87 is a control microcomputer, 88 is a compression / expansion processing circuit, 89 is an interface circuit, and 90 is a hard disk drive (HD
D) and 91 are power supply circuits, and 92 is a power supply input terminal.

The present embodiment is different from the embodiment shown in FIG. 1 in that not only the camera photographing signal but also the first input signal and the broadcast input from the audio input terminal 81 and the video input terminal 82 as external input signals. A second input signal output from the tuner 83 that receives the signal, a third input signal input from the digital audio / video input terminal 12, and reproduction from a hard disk drive (HDD) that is another recording medium. Tables 1 to 3 also for the fourth input signal and the like.
Further, according to the media discrimination of the loaded disc media 32 shown in FIGS. 2 to 8, it is shown that each system that automates and facilitates selection of the disc rotation speed and the recording / reproducing transfer rate can be applied.

Here, the operation for the first and second input signals is almost the same as the operation for the camera input signal described above, and therefore detailed description thereof will be omitted. The third input signal, the video / audio digital input signal, is generally a compressed audio-video multiplex signal. The audio / video signal compression / expansion processing circuit 88 converts this input signal into a video format or a video recording format, or a variable bit rate or a fixed bit rate by bit rate conversion, and high image quality and high bit rate. Convert to standard low bit rate. These converting means may be realized by temporarily expanding the input signal in the audio / video signal compression / expansion processing circuit 88 and then compressing it again. By setting the parameters of these conversion processes as shown in Table 3, the transfer rate (and the rotation speed) suitable for each recording medium can be automatically switched and set.

Further, the first to third input signals are temporarily stored in the hard disk drive (HDD) 90 via the audio / video signal compression / expansion processing circuit 88, and if necessary, these are stored. It is conceivable to store the above information in the disk medium 32. The signal in the hard disk drive (HDD) 90 is generally recorded in the same format as the third input signal in general, and the fourth input is performed by performing the same processing as the third input signal. By setting the signals as shown in Table 3, the transfer rate (and the rotation speed) suitable for each recording medium can be automatically switched and set.

Next, an embodiment in which the present invention is applied to another device will be described with reference to FIG. In the figure, the same or equivalent functional parts as those in FIGS. 1 and 9 are designated by the same reference numerals. 101 is a CPU, 102 is a display unit, 103 is an operation unit, 104 is a voice processing DSP, 105 is a speaker, 106 is an information transmission line interface, 107 is ROM, and 108 is RA.
M and 109 are flash memory (F-RAM), 110
Indicate input / output units, respectively.

This device is a portable information processing device having a recording / reproducing unit 41. The input / output unit 110 that uses the disk medium 32 that can be inserted into and removed from the recording / reproducing unit 41 of the portable information processing device as a recording medium and requires real-time recording
In the case of having the following, the same problems and solving means as those of the camera-integrated recording device shown in FIG. 1 are effective.

The input / output unit 110 shown in the figure takes in a voice signal by the microphone 1 and the audio input processing circuit 2, and takes in a video signal by the lens unit 5, the image sensor (CCD) 6 and the camera video signal processing circuit 7. Also,
The information transmission line interface 106 inputs / outputs multimedia information including video / audio / data from / to an external device or network. These input / output section 1
The information fetched from 10 is processed and processed by the CPU 101 and temporarily stored in the buffer memory (RAM 108). When these pieces of information reach a predetermined amount, they are recorded in the recording / reproducing unit 41 via the interface circuit 19. In addition, the user operates the operation unit 103 to control the operation of this device. In addition, the state of the device is disclosed to the user by the display unit 102. The operation of each of the other parts basically operates in the same manner as the operation of FIGS. 1 and 9. For this device,
The operations shown in Tables 1 to 3 and FIGS. 2 to 8 are applied.

[0075]

As is apparent from the above description, according to the present invention, a more suitable recording and reproduction transfer rate (and disk rotation speed) can be automatically set according to the type of recording medium to be loaded. This has the effect that high-speed recording / reproduction of information and power saving of the system can be achieved.

Further, a more suitable recording and reproduction transfer rate (and disk rotation speed) depending on the compression method (fixed and variable bit rate) of the recorded image at the time of camera recording or the selection mode of the image quality (average bit rate). Can be automatically set, and high-speed recording / reproduction of video information and power saving of the system can be achieved.

Furthermore, the video recording device and the video reproducing device are applied to a camera-integrated recording (and reproducing) device, a monitor-integrating recording (and reproducing) device and a portable information processing device to record and reproduce video information at high speed. And, it has an effect that power saving of the system can be achieved.

[Brief description of drawings]

FIG. 1 is a circuit block diagram of an embodiment of the present invention.

FIG. 2 is a waveform diagram showing an operation of a main part of one embodiment of the present invention.

FIG. 3 is an operation flowchart of a main part of the embodiment of the present invention.

FIG. 4 is a waveform diagram showing another operation of the main part of the embodiment of the present invention.

FIG. 5 is a specific display screen diagram of a part of the embodiment of the present invention.

FIG. 6 is another operational flowchart of the main part of the embodiment of the present invention.

FIG. 7 is an operation flowchart of another main part of the embodiment of the present invention.

FIG. 8 is another operation flowchart of another main part of the embodiment of the present invention.

FIG. 9 is a circuit block diagram of a second specific example of the present invention.

FIG. 10 is a circuit block diagram of a third specific example of the present invention.

[Explanation of symbols]

1 ... Microphone, 2 ... Audio input processing circuit, 5 ... Lens unit, 6 ... Imaging sensor (CCD), 7 ... Camera video signal processing circuit, 8 ... Compression / expansion processing circuit, 9 ... Video display / output processing circuit, 10 ... Display means (LCD), 11 ...
Driver, 12 ... Digital audio / video input terminal, 15 ...
D-RAM, 16 ... Control microcomputer, 18 ... Operation switch (SW), 19 ... Interface circuit, 24 ... Signal /
Control processing circuit, 25 ... D-RAM, 28 ... Control microcomputer, 29 ... Recording circuit, 30 ... Reproducing circuit, 31 ... Pickup, 32 ... Disk media, 33 ... Spindle motor, 34 ... Feed motor, 35 ... Actuator driver, 38 ... camera section, 39 ... output section, 40 ... control section, 4
1 ... Recording / reproducing unit, 83 ... Tuner, 86 ... Operation switch, 87 ... Control microcomputer, 88 ... Compression / expansion processing circuit,
89 ... Interface circuit, 90 ... Hard disk drive (HDD), 101 ... CPU, 102 ... Display unit,
103 ... Operation unit, 104 ... Voice processing DSP, 106 ...
Information transmission line interface 108 ... RAM, 110 ... Input / output unit.

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) H04N 5/92 H (72) Inventor Hiroaki Ono 292 Yoshida-cho, Totsuka-ku, Yokohama-shi, Kanagawa Prefecture Hitachi Ltd. Digital Media Development Headquarters (72) Inventor Jun Oya 1410 Inada, Hitachinaka City, Ibaraki Prefecture Hitachi, Ltd. Digital Media Products Division (72) Inventor Tatsuya Ishihii 292 Yoshida-cho, Totsuka-ku, Yokohama, Kanagawa Stock Company F-Term in Hitachi Digital Media Development Headquarters (reference) 5C052 AA02 AB04 BC04 5C053 FA23 GA07 GB17 LA06 5D044 BC05 BC06 CC06 DE03 DE12 DE17 DE23 DE29 DE38 EF03 GK03 GK08 GK10 5D090 AA01 BB03 BB04 CC09 CC18 DD03 JJ32H03H03

Claims (48)

[Claims] 1. A video recording apparatus which accepts loading of a plurality of types of recording disk media, and a recording processing for recording a signal including video information on the recording disk medium and a medium determining means for determining the loaded recording disk medium. Means and
A video recording apparatus comprising: a recording transfer rate changing unit that changes a recording transfer rate of the recording processing unit according to the medium discriminating unit. 2. A video recording apparatus that accepts loading of a plurality of types of recording disk media, a medium identifying means for identifying the loaded recording disk medium, an image capturing means for capturing image information, and output information of the image capturing means. Storage means for temporarily storing, recording processing means for recording a signal including the video information from the storage means, and recording transfer rate changing means for changing the recording transfer rate of the recording processing means according to the medium discriminating means. A video recording device comprising: 3. A video recording apparatus which accepts loading of a plurality of types of recording disk media, and a medium identifying means for identifying the loaded recording disk medium, and a signal containing image information by irradiating the recording disk medium with light. When the amount of light to be irradiated differs depending on the recording processing means for recording the recording recording medium and the reference recording transfer rate of each type of recording disk medium, the recording transfer rate of at least one type of recording disk medium is changed to irradiate each recording disk medium. And a recording transfer rate changing means for changing the recording transfer rate of each type of recording disk medium so that the amount of light to be recorded becomes substantially closer. 4. A video recording apparatus that accepts loading of a plurality of types of recording disk media, and recording processing for recording a signal containing video information on the recording disk medium, and a medium determining means for determining the loaded recording disk medium. Means and
An image recording apparatus, comprising: a rotation speed switching means for changing the rotation speed of the recording disk medium in accordance with the medium discriminating means during recording. 5. A video recording apparatus which accepts loading of a plurality of types of recording disk media, a medium identifying means for identifying the loaded recording disk medium, an image capturing means for capturing image information, and output information of the image capturing means. Storage means for temporarily storing, recording processing means for recording a signal including the video information from the storage means, and rotation speed switching means for changing the rotation speed of the recording disk medium according to the medium discriminating means at the time of recording. An image recording apparatus comprising: 6. A video recording apparatus which accepts loading of a plurality of types of recording disk media, and a medium identifying means for identifying the loaded recording disk medium, and a signal containing image information by irradiating the recording disk medium with light. When the amount of light to be irradiated differs depending on the recording processing means for recording the recording disk medium and the reference rotation speed of each type of recording disk medium, the amount of light irradiated to each recording disk medium by changing the rotation speed of at least one type of recording disk medium. And a rotation speed switching unit that changes the rotation speed of each type of recording disk medium so that 7. The video recording apparatus according to claim 1, wherein the plurality of types of recording disk media include at least a write-once disk and a rewritable disk. 8. The video recording apparatus according to claim 7, wherein the recording transfer rate changing means selects a higher recording transfer rate for the rewritable disc than for the write-once disc. Recording device. 9. The video recording apparatus according to claim 1, wherein the plurality of types of recording disk media include at least a dye-based disk and a phase change disk. Recording device. 10. The video recording apparatus according to claim 9, wherein the recording transfer rate changing means selects a higher recording transfer rate for the phase change type disc than for the dye type disc. Video recorder. 11. The video recording device according to claim 1, wherein the plurality of types of recording disk media are at least a DVD-R.
A video recording device including a disc and a DVD-RAM disc. 12. The video recording apparatus according to claim 11, wherein the recording transfer rate changing means selects a higher recording transfer rate for the DVD-RAM disk than for the DVD-R disk. Video recording device. 13. The video recording apparatus according to claim 4, wherein the plurality of types of recording disk media include at least a write-once disk and a rewritable disk. 14. The video recording apparatus according to claim 13, wherein the rotation speed switching means selects a higher disk rotation speed for the rewritable disc than for the write-once disc. apparatus. 15. The video recording apparatus according to claim 4, wherein the plurality of types of recording disk media include at least a dye-based disk and a phase change disk. Recording device. 16. The video recording apparatus according to claim 15, wherein the rotation speed switching means selects a higher disk rotation speed for the phase change type disk than for the pigment type disk. Video recording device. 17. The video recording apparatus according to claim 4, wherein the plurality of types of recording disk media are at least DVD-R.
A video recording device including a disc and a DVD-RAM disc. 18. The video recording apparatus according to claim 17, wherein the rotation speed switching means selects a higher disk rotation speed for the DVD-RAM disk than for the DVD-R disk. Video recording device. 19. A video reproducing apparatus which accepts loading of a plurality of types of disk media, a medium determining means for determining the loaded disk medium, and a reproduction processing means for reproducing a signal including video information from the disk medium. A video reproduction apparatus, comprising reproduction reproduction rate changing means for changing the reproduction transfer rate of the reproduction processing means according to the medium discriminating means. 20. A video reproducing apparatus which accepts loading of a plurality of types of disk media, a medium determining means for determining the loaded disk medium, and a reproduction processing means for reproducing a signal including video information from the disk medium. Storage means for temporarily storing the output information of the reproduction processing means, display means for displaying the video information from the storage means, and reproduction transfer for changing the reproduction transfer rate of the reproduction processing means according to the medium discriminating means. A video reproducing apparatus comprising a rate changing unit. 21. In a video reproducing apparatus for accepting loading of a plurality of types of disk media, medium determining means for determining the loaded disk medium, and playback processing means for playing a signal including video information from the disk medium. An image reproducing apparatus comprising: a rotation speed switching means for changing the rotation speed of the disk medium in accordance with the medium discriminating means during reproduction. 22. In a video reproducing apparatus for accepting loading of a plurality of types of disk media, medium determining means for determining the loaded disk medium, and playback processing means for playing a signal including video information from the disk medium. A storage unit that temporarily stores the output information of the reproduction processing unit, a display unit that displays the video information from the storage unit, and a rotation that changes the rotation speed of the disk medium according to the medium determination unit during reproduction. A video reproducing apparatus comprising: speed switching means. 23. The video reproducing apparatus according to claim 19, wherein the plurality of types of disk media include at least a write-once disk and a rewritable disk. 24. The video reproducing apparatus according to claim 23, wherein the reproduction transfer rate changing means selects a reproduction transfer rate that is higher in the rewritable disc than in the write-once disc. Playback device. 25. The video reproducing apparatus according to claim 19, wherein the plurality of types of disk media include at least a dye-based disk and a phase change type disk. apparatus. 26. The video reproducing apparatus according to claim 25, wherein the reproduction transfer rate changing means selects a higher recording transfer rate for the phase change type disc than for the dye type disc. Video playback device. 27. The video reproducing apparatus according to claim 19, wherein the plurality of types of disk media are at least DVD-RAM.
A video reproducing device including a disc and a DVD-R disc. 28. The video reproducing apparatus according to claim 27, wherein the reproduction transfer rate changing means selects a reproduction transfer rate that is higher in a DVD-RAM disk than in a DVD-R disk. . 29. The video reproducing apparatus according to claim 21, wherein the plurality of types of disk media include at least a write-once disk and a rewritable disk. 30. The video reproducing apparatus according to claim 29, wherein the rotation speed switching means selects a higher disk rotation speed for the rewritable disc than for the write-once disc. apparatus. 31. The video reproducing apparatus according to claim 21, wherein the plurality of types of disk media include at least a dye-based disk and a phase change type disk. apparatus. 32. The video reproducing apparatus according to claim 31, wherein the rotation speed switching means selects a higher disk rotation speed for the phase change type disk than for the pigment type disk. Video playback device. 33. The video reproducing apparatus according to claim 21, wherein the plurality of types of disk media are at least DVD-RAM.
A video reproducing device including a disc and a DVD-R disc. 34. The video reproducing apparatus according to claim 33, wherein the rotation speed switching means is a DVD-R disc or a DV disc.
A video reproducing apparatus characterized in that a D-RAM disk selects a higher rotation speed. 35. A video recording apparatus for recording video information on a removable disk medium, comprising recording processing means for recording a signal containing the video information on the disk medium.
A first recording mode in which the recording processing unit operates at a first recording transfer rate; and a second recording mode in which the recording processing unit operates at a second recording transfer rate different from the first recording mode. A video recording device characterized by having. 36. A video recording apparatus for recording video information on an insertable / removable disk medium, an imaging means for capturing the video information, a storage means for temporarily storing output information of the imaging means, and a disk medium from the storage means Recording processing means for recording a signal containing the video information, wherein the recording processing means operates at a first recording transfer rate, and the recording processing means differs from the first recording mode. A second recording mode that operates at a second recording transfer rate, and a video recording device. 37. A video recording apparatus for recording video information on a removable disk medium, comprising recording processing means for recording a signal containing the video information on the disk medium.
A first recording mode in which the disk medium is rotated at a first rotation speed for recording by the recording processing means, and a disk medium is rotated at a second rotation speed different from the first in the recording processing means. And a second recording mode for recording as a video recording device. 38. In a video recording apparatus for recording video information on an insertable / detachable disk medium, an imaging means for capturing the imaging information, a storage means for temporarily storing the video information output from the imaging means, and the storage means. A recording processing means for recording a signal containing the video information on a disk medium, and a first recording mode for rotating the disk medium at a first rotation speed for recording by the recording processing means; And a second recording mode in which the recording processing means records at a second rotation speed different from the first rotation speed. 39. The video recording apparatus according to claim 35, wherein the video information is a signal compressed at different compression rates in the first recording mode and the second recording mode. A video recording device characterized by recording by using the. 40. The video recording apparatus according to claim 35, wherein the video information is a signal compressed by a different compression method in the first recording mode and the second recording mode. A video recording device characterized by recording by using the. 41. The video recording apparatus according to claim 40, wherein the compression method sets a fixed bit rate or a variable bit rate. 42. A video reproducing apparatus for reproducing video information from an insertable / detachable disk medium, comprising reproduction processing means for reproducing a signal containing the video information from the disk medium, and the reproduction processing means is a first reproduction apparatus. A video reproducing apparatus having a first reproduction mode operating at a transfer rate and a second reproduction mode operating the reproduction processing means at a second reproduction transfer rate different from the first reproduction mode. . 43. In a video reproducing apparatus for reproducing video information from an insertable / detachable disk medium, a reproduction processing means for reproducing a signal containing the video information from the disk medium, and a storage for temporarily storing output information of the reproduction processing means. Means and a display means for displaying the video information from the storage means, wherein the reproduction processing means operates at a first reproduction transfer rate, and the reproduction processing means is the first reproduction mode. And a second reproduction mode that operates at a second reproduction transfer rate different from the above. 44. A video reproducing apparatus for reproducing video information from a removable disk medium, comprising reproduction processing means for reproducing a signal containing the video information from the disk medium, the disk medium being at a first rotation speed. A first reproduction mode in which the disk is rotated and reproduced by the reproduction processing means; and a second reproduction mode in which the disk medium is rotated at a second rotation speed different from the first and reproduced by the reproduction processing means. An image reproducing apparatus having: 45. A video reproducing apparatus for reproducing video information from an insertable / detachable disk medium, a reproduction processing means for reproducing a signal containing the video information from the disk medium, and a storage for temporarily storing output information of the reproduction processing means. Means and a display means for displaying the video information from the storage means, a first reproduction mode in which the disk medium is rotated at a first rotation speed and reproduced by the reproduction processing means, and a disk medium A second reproduction mode in which the reproduction processing means rotates at a second rotation speed different from the first rotation speed and the reproduction processing means reproduces the image. 46. A camera-integrated recording device, characterized in that the video recording device according to any one of claims 1 to 18 and 35 to 41 is configured to record a video signal from a camera imaging device. 47. A video recording device or a video reproducing device according to any one of claims 1 to 45 is configured to record or reproduce video information of an information processing device having an information transmission line interface. A characteristic information processing device. 48. Claims 19 to 34 and 42 to 45
13. A monitor-integrated video reproducing device, characterized by being integrated with a monitor device for displaying a reproduction signal from the video reproducing device according to any one of the items.