JP2003281733A - Recorder - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve a problem that the stable recording/reproducing operation is not available due to the rise of temperature in a recorder when the successive recording operations are continued. <P>SOLUTION: When the real time video information or a disk subjected to recording in a simplified format is processed for finalization, or the like, the intermittent recording operation is realized by using a buffer memory (15), etc., for evading the rise of temperature caused by the successive recording operations. Further, a temperature sensor (42) is provided in the device, then the rise of temperature of the device is reduced by limiting an average recording transfer rate by control microcomputers (16, 28) in accordance with the rise of temperature. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording device for a disc recording medium such as a write-once recording disc or a rewritable recording disc having a limited number of rewritings, and more particularly to a finalizing means for the same and an information recording device using the same. .

[0002]

2. Description of the Related Art Conventionally, as a method for recording video information on a disk-shaped recording medium, there is a real-time video recording format as an application that allows real-time video recording and simple editing processing after recording. This is a standard that allows TV broadcasts and the like to be recorded at the same time as broadcasting, and that editing and erasing after recording can be done easily.

On the other hand, since the standard video format adopted in commercial software intended for viewing on a commercial DVD player is considered to be edited before recording, it is the same as the video recording format. Is different. Therefore, there is a problem that a disc recorded in the video recording format cannot be viewed on a commercially available DVD player.

Therefore, a method has been proposed in which information is once recorded in a simple format in real time and then finalized, whereby recording management data conforming to the standard video format is re-recorded.

However, in the finalizing process, it is necessary to record up to a predetermined area, and when a disc in which information is recorded only in a small area is finalized, a lead-out area in which predetermined data is recorded in the remaining area. However, there is a problem in that the finalization process takes a long time due to increase in On the other hand, high-speed recording or continuous recording in this area requires that recording power be secured, especially in a medium using a dye-based recording medium (for example, DVD-R). The continuous operation causes a problem of temperature rise of the entire device. Note that techniques related to these include, for example, JP 2001-148166 A, JP 11-238310 A, and the like.

[0006]

In the above prior art, when the present disk recording apparatus is used in a small portable device, no consideration has been given to factors of performance instability due to temperature rise. For example, DVD-R and DVD-RW
In the finalizing process of a disc such as, if only a small amount of information is recorded on the recording disc, the DV
It is necessary to record the empty area up to a predetermined disc position in consideration of reproduction by the D player. This time may take several minutes or more, and if you perform continuous recording operation with a small portable device, the temperature of the device will rise rapidly and the performance of each part of the device will not be ensured, and the finalization process will not be completed correctly. May occur.

[0007]

SUMMARY OF THE INVENTION An object of the present invention is to intermittently stop the finalizing process when the temperature of a disk recording device exceeds a predetermined range and suppress the temperature rise by a power saving mode of the device. By continuing the finalizing process, the finalizing process is completed correctly. In other words, it is to realize the finalization process as fast as the device allows.

Further, this operation is not limited to the finalizing process, and it is necessary to perform the same operation when continuously recording a large amount of information even during normal information recording.

Further, there is provided a device in which these disk devices are applied to a camera-integrated recording device, a portable information processing device or a monitor-integrated device.

To achieve the above object, recording means for recording video information on a recording medium, finalizing processing means for recording at least lead-out data by finalizing processing of the recording medium, and temperature for detecting temperature change of the present apparatus Detection means and switching means for switching the finalize processing means to an intermittent recording state in which the recording period and the recording stop period are periodically repeated according to the output of the temperature detecting means are provided.

Further, in order to achieve the above object, recording means for recording video information on a recording medium, finalizing processing means for intermittently performing at least lead-out data recording by finalizing processing of the recording medium, and temperature of this apparatus. A temperature detecting means for detecting a change and a switching means for switching a recording period or a recording stop period of the intermittent recording by the finalizing processing means according to an output of the temperature detecting means are provided.

Further, the image information is supplied from a device comprising an image pickup means for converting an optical signal obtained through the lens unit into an electric signal and a compression means for compressing the output of the image pickup means. It was done so.

Further, the switching means is configured to switch so as to lengthen the duration of the stop period when the temperature detected by the temperature detecting means is equal to or higher than a predetermined value.

Further, the switching means is configured to switch so as to shorten the time of the recording period when the temperature detected by the temperature detecting means is equal to or higher than a predetermined value.

Further, in order to achieve the above object, a recording means for recording video information on a recording medium, a finalizing processing means for performing a finalizing process on the recording medium, and a temperature detecting means for detecting a temperature change of the apparatus, Recording stop means for stopping recording by the finalize processing means when the output of the temperature detection means is equal to or higher than a predetermined value is provided.

Further, the finalization processing means intermittently records at least the recording of the lead-out data in units of a predetermined amount, and the intermittent determination is made as to whether the output of the temperature detecting means is a predetermined value or more. This is done during the period when the recording is stopped.

Also, the switching means has at least a plurality of switching modes, and when the temperature detected by the temperature detecting means exceeds a first threshold value, the ratio of the recording period of the intermittent recording is shortened, and The ratio of the intermittent recording period is returned to the original value when the threshold value decreases to the second threshold value lower than the threshold value.

Further, the switching means has at least a plurality of switching modes, and when the temperature detected by the temperature detecting means exceeds a first threshold value, the ratio of the recording period of the intermittent recording is shortened, and the first recording mode is set. When it decreases to the second threshold lower than the threshold, the ratio of the recording period of the intermittent recording is restored, and when it rises above the third threshold higher than the first threshold, the recording operation of the intermittent recording is stopped. It is the one.

Further, in order to achieve the above object, lens unit means, image pickup means for obtaining an electric signal from an optical signal obtained through the lens unit, and image information from the image pickup means is recorded on a recording medium. Recording means, a finalizing processing means for performing finalizing processing on the recording medium, and recording on the recording medium intermittently at the time of recording video information by the recording means and at least at the time of recording lead-out data by the finalizing processing means. Intermittent recording control means is provided.

Further, the intermittent recording control means is configured such that at least the recording time of the intermittent recording at the time of recording the lead-out data by the finalizing processing means is substantially equal to or longer than the recording time of the intermittent recording at the time of recording the video information. Is.

Further, the intermittent recording control means is arranged such that at least the recording stop time of the intermittent recording at the time of recording the lead-out data by the finalizing processing means is substantially equal to or shorter than the recording stop time of the intermittent recording at the time of recording the video information. It was done.

Further, in order to achieve the above object, a lens unit means, an image pickup means for obtaining an electric signal from an optical signal obtained through the lens unit, and a compression for data compression of a video signal from the image pickup means. Processing means, memory means for temporarily storing the output of the compression means, recording means for intermittently recording a signal read intermittently from the memory means on a recording medium, and temperature detecting means for detecting a temperature change of the apparatus. Switching means for switching the compression ratio of the compression processing means in accordance with the output of the temperature detecting means to switch the recording period or the recording stop period of the intermittent recording of the video signal by the recording means. is there.

Further, in order to achieve the above object, a lens unit means, an image pickup means for obtaining an electric signal from an optical signal obtained through the lens unit, and a compression for data-compressing a video signal from the image pickup means. Processing means, memory means for temporarily storing the output of the compression means, recording means for intermittently recording a signal read intermittently from the memory means on a recording medium, and temperature detecting means for detecting a temperature change of the apparatus. Switching means for switching the time of the recording period or the recording stop period of the intermittent recording of the video signal by the recording means according to the output of the temperature detecting means.

Further, in order to achieve the above object, memory means for temporarily storing video information, recording means for intermittently reading data from the memory means and intermittently recording the video information on a recording medium, A temperature detecting means for detecting a temperature change of the apparatus and a switching means for switching a recording period or a recording stop period of the intermittent recording by the recording means according to an output of the temperature detecting means are provided.

Further, the switching means is configured to switch so as to lengthen the stop period when the temperature detected by the temperature detecting means is equal to or higher than a predetermined value.

Also, the switching means has at least a plurality of switching modes, and when the temperature detected by the temperature detecting means exceeds a first threshold value, the ratio of the recording period of the intermittent recording is shortened, and When the value drops to a second threshold value lower than the threshold value of, the ratio of the intermittent recording period is switched back to the original ratio.

Further, the switching means has at least a plurality of switching modes, and when the temperature detected by the temperature detecting means exceeds a first threshold value, the ratio of the recording period of the intermittent recording is shortened, and When it decreases to the second threshold lower than the threshold, the ratio of the recording period of the intermittent recording is restored, and when it rises above the third threshold higher than the first threshold, the recording operation of the intermittent recording is stopped. It is the one.

Further, in order to achieve the above object, the disk recording device provided with the finalizing processing device of the recording device is applied to a portable camera integrated recording device.

Further, in order to achieve the above object, the disk recording device provided with the finalizing processing device of the recording device is applied to a portable information processing device.

Further, in order to achieve the above object, a monitor device for displaying a reproduced signal from the recording device is applied to a portable monitor integrated type image reproducing device.

[0031]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to FIGS. 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 is a video display / output processing circuit, 10 is display means (LC
D), 11 is a driver for the lens unit 5, 12 is a digital audio / video input terminal, 13 is a digital interface processing circuit, 14 is a digital output terminal, and 15 is D-R.
AM, 16 is a control microcomputer for the entire apparatus, 17 is a flash memory (F-RAM), 18 is an operation switch (SW) of the apparatus, 19 is an interface circuit, 20 is an external power input terminal, 21 is a charging circuit, 22 is a battery , 23
Is a power supply circuit (DC-DC converter), 24 is a signal / control processing circuit of the disk medium, 25 is a D-RAM, 2
6 is an S-RAM, 27 is a flash memory (F-RA
M), 28 is a control microcomputer for the recording / reproducing unit, 29 is a recording / reproducing circuit, 31 is a pickup for recording / reproducing to / from the medium, 32 is a disk medium, 33 is a spindle motor, and 34 is a feed for moving the pickup 31 on the disk medium. Reference numeral 35 is a motor, 35 is an actuator driver for driving a spindle motor 33, a feed motor 34, and an actuator (not shown) in the focus direction and tracking direction in the pickup 34, 36 is a video output terminal, 37 is a switch circuit, and 38 is a camera unit. , 39
Is an output unit, 40 is a control unit, 41 is a recording / reproducing unit, 42 is a temperature sensor, and 43 is an amplifier.

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 section 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
To control the power supply of the camera section. The flash memory 17 is a memory that stores a program or the like that operates the control microcomputer 16. D-RAM15 is video /
It is a memory for temporarily storing the processing data of the voice 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 the recording / reproducing circuit 29 and the pickup 31 are connected. It is recorded on the disk medium 32 via Further, the relative position between the disc medium 32 and the pickup 31 is such that the pickup 31 is time-divisionally reproduced to detect the position information previously written on the disc medium 32 via the recording / reproducing circuit 29, and The control processing circuit 24 and the control microcomputer 28 process the actuators such as the spindle motor 33 and the feed motor 34, which are actuators, and the actuators (not shown) for controlling focus and tracking in the pickup 31 through the actuator driver 35. To drive. Incidentally, the S-RAM 26 and the flash memory 27 store the temporary storage of the calculation data of the control microcomputer 28, the program and the like.

Here, the temperature sensor 42 is arranged in the vicinity of the pickup 31, which needs to pay particular attention to temperature rise,
The temperature of the device is detected by the temperature sensor 42, and the amplifier 43
It is taken into the control microcomputer 28 via. This information is also supplied to the control microcomputer 16 of the camera-integrated recording / reproducing apparatus main body via the signal / control processing circuit 24 and the interface circuit 19. These control microcomputer 2
It is possible to monitor the temperature of the device between 8 and 16 and select an operation mode according to the temperature.

In addition, in the present apparatus, the power source 23 supplies the power source supplied from the external power source input terminal 20 or the power source of the battery 22 charged by utilizing the charging circuit 21 with this power source.
Is supplying power to necessary parts.

Although the recording operation has been described above, almost the opposite operations are performed during reproduction. That is, the information on the disk medium 32 is detected from the disk medium 32 via the pickup 31 and the recording / reproducing circuit 29, and the signal / control processing circuit 24 and the control microcomputer 28 are detected.
The recording format corresponding to the disc medium is demodulated by the, and returned to the video / audio compression / expansion processing circuit 8 via the interface circuit 19, where the compressed video signal and audio signal are expanded to display the video / audio. It outputs to the display means 10, the audio output terminal 4 and the video output terminal 36 via the output processing circuit 9 and the audio output circuit 3. Further, the information before expansion is output to the digital output terminal 14 via the digital interface processing circuit 13.

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.

Here, as the disk medium 32 for handling the video signal, there is, for example, one shown in FIG. DVD-ROM for playback only, DVD-R for write-once type only, DV for rewritable media
There are D-RW and DVD-RAM. 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 can be used to realize original functions such as multi-angle, parental playback, random shuffle playback, and special playback such as fast forward and rewind of video information that has been fully edited in advance such as movies. Has strong informational data to support.

Further, the video recording format takes into consideration an application in which a video signal is recorded in real time without performing an editing process on the premise of this rewritable disc and the editing process can be easily performed after the recording. However, there is a problem that many signals recorded in this video recording format cannot be reproduced by many DVD players for reproducing the reproduction-only disc recorded in the previous video format.

This problem is particularly caused when recording on a disc medium in a video camera, in a rewritable disc such as a DVD-RW or a DVD-RAM, once recording is performed in a video recording format, an editing operation is performed and then the video format is performed again. It can be solved by converting to DVD and re-recording, but it is a write-once disc that is only once DVD
Once recorded on the -R disc in the video recording format, it cannot be rewritten and the disc cannot be reproduced by many DVD players.

Therefore, in a DVD-R disc, information is temporarily recorded in real time in a simple format format, and finally finalized, whereby recording management data conforming to the standard video format is re-recorded. To adopt. Hereinafter, a DVD-R disk will be described as an example, but it goes without saying that the same processing can be performed on a DVD-RW or DVD-RAM disk.

FIG. 3 schematically shows the data structure of a DVD disc. With a DVD that allows recording and playback, the management area is the R-Information area (R-Inform
ation Area), Lead-in Area, and Border-out / Lea
d-out Area, hereinafter referred to as a lead-out area. )
In addition, the R-information area is a power calibration area.
a) and recording management area (Recording
Management Area), but the contents of the Lead-in Area and Lead-out Area are playback-only DVD-Rs.
By making it equal to OM, compatibility of reproduction is secured.

Each time a process involving recording such as recording new data in the data recording area or editing data recorded in the data recording area is performed, a predetermined recording management is performed in these management areas. The recording state is managed by rewriting the data.

In FIG. 2, a groove (Groove) and a land (Land) are spirally formed around the clamping area CA in this disc, and a physical address is defined in the groove and the land. Wobble
le) and Land Pre-pit are formed respectively.

The pickup of the information recording / reproducing apparatus is positionally controlled with respect to the wobble on the basis of the information of the wobble and the land pre-pit to record information on the groove (write data) and reproduce information from the groove (data). (Reading) is performed.

In the groove in which the above-mentioned data writing or data reading is performed, an R-Information Area (RIA) and an information area (R-Information Area: RIA) are provided from the radially inner side (clamping area CA side) toward the radially outer side. Information Area: IA) is allocated.

Next, the operation of the finalizing process will be described with reference to FIG. In the figure, when the user operates the operation switch 18, the operation of the finalizing process is started. First, in step 102, the address of the end of the main data already recorded in the data recording area DRA, that is, the start end of the lead-out area LOA is detected. Furthermore, a lead-out area LOA in a predetermined range in the standard format is recorded.

Next, in step 103, the recording management data RMD is stored in the recording manager area RMA.
(Recording Management Area) is recorded. next,
In step 104, recording management data RMD as predetermined data indicating that the disc has been finalized is recorded in a predetermined area of the lead-in area LIA in accordance with the standard format.

As described above, when the finalizing process is performed, if the loaded disk 32 is in the simple format, the recording management data RMD is automatically recorded in conformity with the standard format, and therefore the read-only D
Compatibility with VD is secured. However, the finalizing process is performed in a predetermined range (for example, a diameter of 70 mm) when the recorded area is small as described above.
Record the lead-out area LOA up to. For this reason,
Depending on the conditions, it may take a dozen minutes or more to finalize.

Here, an embodiment showing one feature of the present invention will be described in detail with reference to FIGS. During normal camera recording, as shown in FIG. 5, a signal photographed by the camera unit 38 is compressed by the output unit 39 into a video / audio signal and is used as photographing information 51 as a buffer memory (DR) in the control unit 40.
AM 15) buffer input 52. on the other hand,
The recording / reproducing unit 41 loaded with the disc 32 drives the disc 32 at a recording transfer rate that is high enough to record a 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 a large vibration or the like, it is necessary to record the same information again at the same location or a different location on the disc 32. Considering these points, The buffer memory (D-RAM 25) is provided with a sufficiently large capacity, and the recording transfer rate on the disk 32 is set higher than the rate of the photographing information 61 serving as the input signal. In FIG. 5, about twice is shown as an example.

That is, the buffer memory (D-RA
The buffer output 53 from M15) is read intermittently at a data rate about twice that of the buffer input 52,
This information is recorded on the disc 32. Recording ON (t1on) / OFF (t1of
f) The state is about 1/2 period as shown in FIG. Also,
By intermittently performing the recording operation in this way, this OFF
The recording / reproducing unit 41 is used for most of the (t1off) period.
It is possible to stop most of the operations of the above, and it is possible to obtain the effect that the power consumption can be reduced by stopping this operation.

On the other hand, recording on the disc 32 in the finalizing process is not necessarily real-time recording unlike the camera recording. That is, there is no particular limitation on the device as to what recording transfer rate is used for recording. However, in consideration of the compatibility with the above-mentioned camera recording, in particular, in order to obtain the power consumption reduction effect by the intermittent recording, considering that the power consumption is equivalent to that of the camera recording, as shown in FIG. Good finalization (recording) operation. That is, when the finalizing process start command 61 is received by the input from the operation SW 18, the control microcomputer 1
6, interface circuit 19, signal / control processing circuit 2
4. Through the recording / reproducing circuit 29, the pickup 31, the control microcomputer 28, etc., the lead-out recording data 62 is intermittently repeated on the disk medium 32 by repeating the ON (t2on) / OFF (t2off) state as indicated by the medium recording signal 63. To record.

As described above, the recording by the normal camera and the recording during the finalizing process are performed intermittently to reduce the power consumption at the time of interruption, so that it is possible to always obtain the effect of reducing the average power consumption. On the other hand, it is obvious that it is better to complete the finalization processing time in a short time in terms of usability. Therefore, while the amount of recorded data during normal camera recording is the optimal (minimum necessary) amount of data recorded according to the captured image, the recorded data at a higher speed within the range of power consumption etc. I want to record the amount (average).

A specific example of this embodiment will be described with reference to FIG. That is, as described above, the system is configured to switch the ON / OFF cycle of the intermittent operation according to the recording operation during the camera recording or the finalizing process (ST122). In contrast to ON (t1on) / OFF (t1off) in ST124 during camera recording, recording ON (t2o) in ST123 during finalization processing.
n) / OFF (t2off), t2on> t1
By executing one or both of on and t2off <t1off, the average recording data amount is made higher in the finalizing process than in the camera recording, thereby shortening the finalizing process time.

In this operation, the control microcomputer 16 determines the operation mode instructed by the operation SW 18, and the digital video signal compressed by the compression / expansion circuit 8 with a predetermined data amount is recorded in the D-RAM 15 at the time of camera recording. , Interface circuit 19, signal / control processing circuit 24, recording / reproducing circuit 2
9, a predetermined intermittent period (t1o) on the disk medium 32 via the pickup 31, the control microcomputer 28, and the like.
n / t1 off). On the other hand, the control microcomputer 16
If it is determined to be the finalizing process by the disc drive 32, the interface circuit 19, the signal / control processing circuit 24, the recording / reproducing circuit 29, the pickup 31, the control microcomputer 28 and the like are used to perform a predetermined intermittent cycle (t2) on the disk medium 32.
on / t2 off) to record the finalization processing data.

Further, an embodiment showing another feature of the present invention will be described in detail with reference to FIGS. The emission wavelength of the laser diode built in the pickup 31 has temperature dependence, and generally has a characteristic that the emission wavelength becomes longer as the temperature rises. A DVD-R disc made of a pigment-based recording medium is an optical disc having wavelength dependence, and the absorption rate tends to decrease as the emission wavelength of the recording laser diode becomes longer. For this reason, in recording on a DVD-R disc made of a pigmented recording medium, it is necessary to supply a larger power value for the emission power of the laser diode according to the temperature rise.

That is, the laser diode built in the pickup 31 is affected by the temperature change, and there arises a problem that sufficient recording power cannot be supplied particularly at a high temperature. Therefore, it is possible to record a relatively high data transfer amount at low temperatures, but it is not possible to record a very high data transfer amount at high temperatures. In other words, it is desirable to record data at high speed at low temperatures and record data at low speed at high temperatures. Therefore, the recording operation during the finalizing process is performed at high speed when the temperature inside the apparatus is low, and at low speed when the temperature inside the apparatus is high. As a result, when the ambient temperature that is normally used is low, the finalizing process is performed at high speed, the waiting time for the user is shortened, and conversely, when the ambient temperature is high, the finalizing process can be performed reliably at low speed.

These operations will be described in more detail with reference to FIGS. When the finalizing process start command 71 is received by the input from the operation SW 18, the lead-out recording data 7 is transmitted via the control microcomputer 16, the interface circuit 19, the signal / control processing circuit 24, the recording / reproducing circuit 29, the pickup 31, the control microcomputer 28 and the like.
4 is recorded on the disk medium 32 in the ON / OFF state as indicated by the medium recording signal 75. Here, the temperature inside the device is detected by the temperature sensor 42 arranged near the pickup 31, the information of the temperature change 72 is taken into the control microcomputer 28 through the amplifier 43, and when the temperature exceeds the predetermined threshold, the temperature threshold is exceeded. 73 information is detected and determined in processing step 132 (ST132) of FIG. 9, and in processing step 133 (ST133), a medium recording signal 75 is recorded on the disk medium 32 of the lead-out recording data 74 in a predetermined intermittent recording operation. Switch to. Here, the intermittent operation is configured so that the average value of the recording data decreases. Further, in this intermittent drive, as described above, the power consumption when the recording is stopped is also reduced, so that the average power consumption is reduced and the temperature rise of the apparatus is also reduced.

Here, the structure in which the average recording data amount is reduced by intermittent driving has been shown, but of course, the same effect can be obtained by reducing the rotation speed of the disk medium to reduce the recording data transfer speed. In the above-mentioned embodiment, the lead-out data recording of the finalizing process is described as continuous recording at room temperature, but as described with reference to FIGS.
A case where intermittent driving is adopted even at room temperature will be described with reference to FIG. In the figure, the determination method of the configuration of FIG. 7 is the temperature determination. That is, as described above, the temperature is detected by the temperature sensor 42 in the apparatus to determine whether or not the temperature has reached a predetermined temperature (ST172),
Configure a system that switches the ON / OFF cycle of intermittent operation. When the temperature is equal to or lower than the predetermined temperature, O in processing step 174
In contrast to N (t1on) / OFF (t1off), when the temperature is equal to or higher than the predetermined temperature, the recording is turned on in the processing step 173.
At (t2on) / OFF (t2off), t2o
n> t1on or t2off <t1off, or both, makes the average recording data amount higher at room temperature than at high temperature, thereby shortening the finalization processing time at room temperature and processing at high temperature. Although the speed is reduced, the processing is surely completed.

Further, an embodiment of a countermeasure against a further temperature rise will be described with reference to FIG. According to the temperature threshold value 73 information, even if the temperature rise is reduced by the intermittent recording as described above, it is expected that the allowable temperature of the device will be exceeded due to the ambient temperature condition and the like. As such a countermeasure, FIG.
As shown in FIG. 5, after the start end of the lead-out data recording is detected in the processing step 142, the lead-out area data is recorded in step 143 in units of a predetermined amount. Then, each time recording is completed in units of a predetermined amount, in step 144, the control microcomputer 28 detects the information of the temperature change 72 obtained from the temperature sensor 42 and the amplifier 73, and sets the predetermined third threshold value. Determine if it has been reached.

If the predetermined third threshold value (the temperature at which the operation of the apparatus cannot be compensated) has not been reached, the next step 14
It is determined whether the lead-out area recorded in 5 has reached a predetermined range. If it has not reached, the process returns to the step 143 again, and recording is resumed by a predetermined amount of unit following the already recorded data in the lead-out area. If the recorded lead-out data has been recorded in the predetermined leader-out area in step 145, the recording management data of the disc is recorded in step 146, and the lead-in area is recorded in step 147. Here, the disc management data and the lead-in area are predetermined areas, and the recording time is about several tens of seconds, which is sufficiently shorter than the lead-out area.

When it is determined in step 144 that the information of the temperature change 72 has reached the predetermined third threshold value (the temperature at which the operation of the apparatus cannot be compensated), the process jumps to step 148 to interrupt the finalizing process. finish.

As described above, similar problems and countermeasures can be considered not only for finalizing processing but also for ordinary camera recording. These will be described with reference to FIGS.

During the recording by the camera, the temperature inside the apparatus may rise similarly. This is because the recording period ratio of the intermittent recording of the recording / reproducing unit 41 is increased when the camera unit 38 generates a large amount of image data necessary for high-quality shooting.
1, the temperature rise in the device increases. In such a case, when the temperature sensor 42 detects the inside of the apparatus and exceeds a predetermined threshold value, the amount of image data of the camera unit 38 is limited (low image quality photographing condition), and the intermittent recording of the recording / reproducing unit 41 is performed. The temperature rise is reduced by reducing the recording period ratio. By this,
Although the image quality is limited, stable shooting can be realized even in a high temperature environment.

Details of this operation will be described first with reference to FIGS. Normally, when shooting continuous moving images, the control microcomputer 16 receives a recording start 81 signal from the operation SW 18 (ST151), and the signal shot by the camera unit 38 is imaged by the compression / expansion processing circuit 8 in the output unit 39. / The audio signal is compressed and supplied as the shooting information 84 to the buffer input 85 of the buffer memory (D-RAM 15) in the control unit 40. On the other hand, the recording / reproducing unit 41 intermittently reads from the buffer memory (D-RAM 15) at a higher transfer rate as the buffer output 86, and the disk medium 32.
The medium recording signal 87 is intermittently recorded on the top.

Here, when the information on the temperature change 82 detected by the temperature sensor 42 and the amplifier 43 detects a predetermined temperature threshold value 83 as shown in FIG. 12, the processing step 152 (ST152 of FIG. 13). )
In step 153 (ST153), the compression rate in the compression / expansion processing circuit 8 is changed to reduce the amount of data after compression. As a result, the data amount of the photographed information 84 after compression is reduced, and the buffer memory (D-
Since the buffer input 85 to the RAM 15) is also reduced, the accumulation time to the buffer memory (D-RAM 15) becomes long, and as a result, the read cycle of the buffer output 86 becomes long (from t1 to t2 in FIG. 12). . As a result, the power consumption of the recording / reproducing unit 41 is reduced, and the temperature rise in the device can be suppressed.

As a result of the above operation, under normal ambient temperature conditions, relatively high image quality, high rate data is recorded, and the ambient temperature and the temperature inside the device become extremely high, making stable high-speed recording difficult. However, although the image quality deteriorates to some extent, by setting the recording rate low, it becomes possible to reduce the temperature rise in the apparatus and continue recording.

Next, the processing when the temperature rise does not fall within the desired range even by the above means or when the temperature falls by the above means will be described in more detail with reference to FIGS.

First, when the temperature change 91 exceeds the first threshold value 92, the process shifts to the low image quality (low transfer rate) recording mode of the process step 163 as described above in the process step 162. After that, the second threshold 93 lower than the first threshold
Until it becomes the following, the process does not shift to the high image quality (high transfer rate) recording mode of the processing step 167 again. By providing such temperature hysteresis, frequent switching between the high image quality mode and the low image quality mode is prevented.

Next, the temperature change 91 corresponds to the first threshold value 92.
If the temperature continues to rise due to the ambient temperature condition, the operating condition in the apparatus, etc. even when the low image quality mode is exceeded, the third threshold value 9 higher than the first threshold value 9 is processed in processing step 165.
When the value exceeds 3, the operation of the device is stopped. That is,
When the temperature rises to a temperature (third threshold value) where the operation of the equipment cannot be guaranteed, the operation of the equipment shall be stopped.

Although the camera recording has been described above, the present system is also the same in the operation during the finalizing process described above. That is, until the first threshold is reached, finalized data such as lead-out data is recorded at high speed (continuous recording or a relatively large recording period ratio even in intermittent recording), and the first threshold is exceeded. And recording at a low speed (in the intermittent recording state or in a state where the ratio of the recording period in the same intermittent recording is relatively small). After that, when the temperature drops to the second threshold value, the high-speed recording state is restored again. On the other hand, when the temperature further rises to the third threshold value, the recording state is stopped so that the temperature is not increased any more as a power saving state.

Next, another embodiment of the present invention will be described with reference to FIG. In the figure, the same or equivalent functional parts as in FIG. 171 is a CPU, 172 is a display unit, 1
73 is an operation unit, 174 is a DSP for audio processing, 175 is a speaker, 176 is an information transmission line interface, 177.
Is a ROM, 178 is a RAM, 179 is a flash memory (F-RAM), and 180 is an input / output unit.

This device is a portable information processing device having a recording / reproducing unit 41. A disc 32 type recording medium that can be inserted into and removed from the recording / reproducing unit 41 of the portable information processing device is adopted,
When the input / output unit 180 that requires real-time recording is included, similar to the camera-integrated recording device shown in FIG. 1, real-time recording is performed in a simple format, and finalization processing is performed later to, for example, It is conceivable to edit in a compatible format that can be played back by the playback device (viewer device). In such an operation,
Problems and solutions similar to those of the camera-integrated recording device shown in FIG. 1 are effective.

The input / output unit 180 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 path interface 176 inputs / outputs multimedia information including video / audio / data from / to an external device or network. These input / output section 1
The information fetched from 80 is processed and processed by the CPU 171, and temporarily stored in the buffer memory (RAM 178). 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 173 to control the operation of this device. Further, the status of the apparatus is disclosed to the user by the display unit 172. The operation of each of the other parts basically operates in the same manner as the operation of FIG. 2 to 1 for this device as well.
Each operation shown in 5 is applied.

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 configurations of FIGS. Reference numeral 181 is an audio input terminal, 182 is a video input terminal, 183 is a tuner for receiving a broadcast signal, 184 is an audio input circuit, 185 is a video input processing circuit, 186 is an operation switch, 187 is a control microcomputer, 188 is a compression / input circuit.
Decompression processing circuit, 189 is an interface circuit, 190
Is a hard disk drive (HDD), 191 is a power circuit, and 192 is a power 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 181 and the video input terminal 182 as external input signals. Tuner 1 for receiving signals
83, a second input signal outputted from the digital audio / video input terminal 12, a third input signal inputted from the digital audio / video input terminal 12, and a hard disk drive (HD
D) It is shown that the operation of each system shown in FIGS. 2 to 15 can be applied to the reproduced fourth input signal and the like from 190.

Here, since the operation for the first and second input signals is almost the same as the operation for the camera input signal described above, 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 / decompression processing circuit 188 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 conversion means may be realized by temporarily expanding the input signal in the audio / video signal compression / expansion processing circuit 188 and then compressing it again.

Further, the first to third input signals are temporarily stored in the hard disk drive (HDD) 190 via the audio / video signal compression / expansion processing circuit 188, 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) 190 is generally the third signal described above.
Often recorded in the same format as the input signal of
By performing the same processing as the third input signal,
Similar processing can be performed on the input signal of.

As is clear from the above description, continuous camera recording and finalizing are performed in order to avoid performance instability factors due to temperature rise which occurs when the present disk recording apparatus is adopted in a small portable device. Even for recording information such as lead-out data recording during processing, intermittent recording is performed by using a high-speed recording transfer rate, and the average power consumption is reduced by reducing the power consumption of the recording / playback unit at this time. It lowers the temperature rise. In addition, by providing a temperature sensor in the device, the amount of compressed information during camera recording can be switched when the temperature rises, and the average recording speed of the lead-out data during finalization processing can be reduced to reduce the intermittent cycle of recording operation. By switching to save power, the temperature rise can be reduced. As a result, there is an effect that information can be transferred and recorded at a high speed in a normal temperature range, and the recording operation can be surely performed at a high temperature but at a low speed.

Further, when the temperature of the disk recording device exceeds a predetermined range, camera recording or finalizing process is temporarily stopped to reduce the power consumption of the device and suppress the temperature rise to avoid an erroneous recording operation. You can

Furthermore, by applying these disc recording devices to a camera-integrated recording device, a portable information processing device, or a monitor-integrated device, it is possible to provide various disc recording device-integrated devices that guarantee stable operation. Has the effect.

[0084]

As described above, according to the present invention, the finalizing process for converting the information recorded in the simple format into the standard video format can be performed more reliably.

[Brief description of drawings]

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

FIG. 2 is a comparison diagram showing various discs used in one embodiment of the present invention and their recording formats.

FIG. 3 is a schematic diagram showing a data structure of a disc used in an embodiment of the present invention.

FIG. 4 is an operation flowchart of a main part of the embodiment of the present invention.

FIG. 5 is a schematic waveform diagram showing an operation of a main part of one embodiment of the present invention.

FIG. 6 is a schematic waveform diagram showing an operation of a main part of one embodiment of the present invention.

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

FIG. 8 is a schematic waveform diagram showing an operation of a main part of one embodiment of the present invention.

FIG. 9 is another operational flow chart of the main part of one embodiment of the present invention.

FIG. 10 is an operation flowchart of another main part of the embodiment of the present invention.

FIG. 11 is an operation flowchart of another main part of the embodiment of the present invention.

FIG. 12 is a schematic waveform diagram showing an operation of a main part of one embodiment of the present invention.

FIG. 13 is an operation flowchart of another main part of the embodiment of the present invention.

FIG. 14 is another operation flowchart of the main part of the embodiment of the present invention.

FIG. 15 is a schematic waveform diagram showing an operation of a main part of one embodiment of the present invention.

FIG. 16 is a circuit block diagram of a second embodiment of the present invention.

FIG. 17 is a circuit block diagram of a third embodiment 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, 20 ... External power input terminal, 21
... Charging circuit, 22 ... Battery, 23 ... Power supply circuit (D
C-DC converter), 24 ... Signal / control processing circuit,
25 ... D-RAM, 28 ... Control microcomputer, 29 ...
Recording / reproducing circuit, 31 ... Pickup, 32 ... Disk media, 33 ... Spindle motor, 34 ... Feed motor, 35 ... Actuator driver, 37 ... Switch circuit, 38 ... Camera section, 39 ... Output section,
40 ... Control part, 41 ... Recording / reproducing part, 42 ... Temperature sensor, 43 ... Amplifier, 171 ... CPU, 172
... Display unit, 173 ... Operating unit, 176 ... Information transmission line interface, 178 ... RAM, 180 ... Input / output unit, 183 ... Tuner, 186 ... Operation switch,
187 ... Control microcomputer, 188 ... Compression / expansion processing circuit, 189 ... Interface circuit, 190 ... Hard disk drive (HDD).

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Akira Mitsube             292 Yoshida-cho, Totsuka-ku, Yokohama-shi, Kanagawa             Ceremony Hitachi Digital Media Development Book             Department (72) Inventor Hiroaki Ono             292 Yoshida-cho, Totsuka-ku, Yokohama-shi, Kanagawa             Ceremony Hitachi Digital Media Development Book             Department (72) Inventor Kazunori Uemura             1410 Inada Stock Company, Hitachinaka City, Ibaraki Prefecture             Hitachi, Ltd. Digital Media Products Division             Within F-term (reference) 5C052 AA02 AB04                 5D044 AB05 AB07 BC04 CC06 EF02                 5D090 AA01 BB10 CC01 HH02 JJ07

Claims (15)

[Claims] 1. A recording unit for recording video information on a recording medium, a finalizing unit for recording at least lead-out data by finalizing the recording medium, a temperature detecting unit for detecting a temperature change of the apparatus, and the temperature detecting unit. A recording device, comprising: a switching unit that switches the finalizing processing unit to an intermittent recording state in which a recording period and a recording stop period are periodically repeated according to an output of the unit. 2. A recording means for recording video information on a recording medium, a finalizing means for intermittently recording at least lead-out data by finalizing the recording medium, and a temperature detecting means for detecting a temperature change of the apparatus. A recording device, comprising: a switching unit that switches a recording period or a recording stop period of intermittent recording by the finalizing processing unit according to an output of the temperature detecting unit. 3. The image information is supplied from a device including image pickup means for converting an optical signal obtained through a lens unit into an electric signal, and compression means for compressing an output of the image pickup means. Claims 1 and 2 characterized by the above.
The recording device described. 4. The recording apparatus according to claim 2, wherein the switching means performs switching so as to lengthen the stop period when the temperature detected by the temperature detecting means is equal to or higher than a predetermined value. 5. The recording apparatus according to claim 2, wherein the switching means performs switching so as to shorten the time of the recording period when the temperature detected by the temperature detecting means is equal to or higher than a predetermined value. 6. A recording means for recording video information on a recording medium, a finalizing processing means for finalizing the recording medium, a temperature detecting means for detecting a temperature change of the apparatus, and an output of the temperature detecting means having a predetermined value. A recording apparatus comprising recording stop means for stopping recording by the finalization processing means in the above case. 7. The finalization processing means intermittently records at least the recording of the lead-out data in units of a predetermined amount, and the intermittent determination of whether or not the output of the temperature detecting means is a predetermined value or more. The recording apparatus according to claim 6, wherein the recording is performed during a recording stop period. 8. The switching means has at least a plurality of switching modes, and when the temperature detected by the temperature detecting means exceeds a first threshold value, the ratio of the recording period of the intermittent recording is shortened, 3. The recording apparatus according to claim 1, wherein the ratio of the intermittent recording period is switched back to the original value when the second threshold value lower than the threshold value is decreased. 9. The switching means has at least a plurality of switching modes, and when the temperature detected by the temperature detecting means exceeds a first threshold value, the ratio of the recording period of the intermittent recording is shortened.
When it drops to a second threshold lower than the first threshold, the ratio of the recording period of the intermittent recording is restored, and when it rises above a third threshold higher than the first threshold, the recording operation of the intermittent recording is stopped. 3. The recording apparatus according to claim 1, wherein the recording apparatus is switched as follows. 10. Lens unit means, image pickup means for obtaining an electric signal from an optical signal obtained through the lens unit, recording means for recording image information from the image pickup means on a recording medium, and the recording medium. Finalizing processing means for performing finalizing processing, and intermittent recording control means for intermittently recording on the recording medium at the time of recording video information by the recording means and at least recording lead-out data by the finalizing processing means. A recording device characterized by. 11. The intermittent recording control means is characterized in that at least the recording time of the intermittent recording at the time of recording the lead-out data by the finalizing processing means is substantially equal to or longer than the recording time of the intermittent recording at the time of recording the video information. The recording device according to claim 10. 12. The intermittent recording control means determines that at least the recording stop time of the intermittent recording at the time of recording the lead-out data by the finalizing processing means is substantially equal to or shorter than the recording stop time of the intermittent recording at the time of recording the video information. The recording device according to claim 10, wherein the recording device is a recording medium. 13. A portable camera-integrated recording device comprising a disc recording device provided with the finalizing processing device of the recording device according to any one of claims 1 to 12. 14. A portable information processing device comprising a disc recording device provided with the finalizing processing device of the recording device according to claim 1. Description: 15. A monitor-integrated video reproducing device, which is integrated with a monitor device for displaying a reproduction signal from the video reproducing device according to any one of claims 1 to 12.