JP2009043294A - Recorder - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem that image quality reduction exceeding user's permissible range is possibly caused when image quality is automatically adjusted to be within a capacity of a recording medium during copying of a program recorded by a hard disk recorder in a DVD or the like. <P>SOLUTION: A recorder is provided for issuing a warming when image quality does not satisfy predetermined conditions during automatic adjustment of image quality. Specifically, the recorder includes an automatic image quality adjusting part for automatically adjusting image quality during recording of a video in a recording medium, an image quality information obtaining part for obtaining image quality information indicating image quality after automatic adjustment, a condition storing part for storing predetermined conditions regarding image quality to output a warning, a first judgement part for judging whether the obtained image information satisfied the stored predetermined conditions, and a warning output part for outputting a warning according to the judging result of the first judgement part. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a technique for giving a warning when quality deteriorates due to dubbing in a device such as a hard disk recorder.

  In recent years, a usage form of recording broadcasts with a hard disk recorder or the like has become widespread. The recorded broadcast is usually dubbed onto a recording medium such as a DVD-R for storage. However, the recording medium as described above has a capacity limitation. On the other hand, BS broadcasting and terrestrial digital broadcasting in recent years are often produced and broadcasted in HDTV quality, and the recording capacity per hour tends to increase compared to conventional broadcasting. For this reason, when dubbing on a recording medium, in order to further compress the recorded video capacity so that it can fit in the medium, measures such as reducing the bit rate and resolution, etc., and reducing the capacity by re-encoding are taken. ing. However, problems such as a decrease in image quality due to a decrease in bit rate, resolution, and re-encoding process itself occur.

  Furthermore, there is no problem if the user recognizes the above-mentioned deterioration in image quality when dubbing, but the user performs dubbing without recognizing that even though the image quality is greatly reduced. If this happens, problems will arise. This is because part of digital broadcasting is subject to so-called copy-once (or equivalent) restrictions for copyright protection. Because of such restrictions, copy-once video may take the form of a move, in which the recorded original video is not copied, but the original is deleted and the video with reduced image quality is recorded on the medium. Many. And once moved, the applied compression is usually irreversible, so it cannot be restored to the original quality video, and as a result, the original quality video is lost without the user's knowledge. Because it becomes.

As described above, when the deterioration of the image quality is expected by the automatic adjustment accompanying the compression, a problem occurs because the user does not recognize the deterioration of the image quality. Patent Document 1 discloses the following technique as a technique having means for notifying a user of a decrease in image quality. In this technique, the image quality per unit time of the video imaged during video recording is evaluated. When a video with a large amount of motion is photographed, the compression efficiency is reduced, resulting in a reduction in image quality. In such a case, the cause is estimated and notified to the user. In addition, image quality information is recorded synchronously with video so that it can be used during playback.
JP 2006-166255 A

  However, although the above technique notifies the user of a decrease in image quality, it has the purpose of prompting the user to change the shooting method by notifying the user when shooting a video. For this reason, it is not intended to predict a reduction in image quality due to compression in advance during dubbing and to prompt a change in compression rate.

  Then, recompression is performed during dubbing, and there is a problem of providing means for predicting a decrease in image quality and notifying the user when changing the recording capacity.

  In order to solve the above problems, the present invention provides the following dubbing apparatus. First, a recording apparatus that issues a warning when recording quality does not satisfy a predetermined condition when recording a video on a recording medium is provided.

  Specifically, an automatic image quality adjustment unit for automatically adjusting image quality when recording video on a recording medium, an image quality information acquisition unit for acquiring image quality information indicating the image quality after automatic adjustment, and a warning output A condition holding unit that holds a predetermined condition regarding image quality, a first determination unit that determines whether the acquired image quality information satisfies a predetermined condition, and a warning according to the determination result of the first determination unit And a warning output unit for outputting.

  Second, based on the recording apparatus according to the first aspect of the invention, there is provided a recording apparatus that compares the remaining capacity of the recording medium with the amount of video information to be recorded and determines whether or not automatic image quality adjustment is necessary.

  Specifically, in order for the automatic image quality adjustment unit to compare the amount of video information to be recorded with the remaining capacity of the recording medium and record the comparison result in the remaining capacity, it is necessary to automatically adjust the image quality. The recording apparatus is based on the first invention, and has an adjustment necessity determination means for determining whether or not there is an adjustment.

  According to a third aspect of the invention, there is provided the recording apparatus according to the first aspect or the second aspect, wherein the first determination unit includes first determination means for determining whether the image quality after the automatic adjustment is equal to or lower than a predetermined quality. provide.

  According to a fourth aspect of the present invention, in the recording apparatus according to the first to third aspects, the second determining means for determining whether the image quality difference after automatic adjustment is equal to or greater than a predetermined difference value is provided in the recording apparatus. I will provide a.

  According to a fifth aspect of the present invention, in the recording apparatus according to the first aspect to the fourth aspect of the present invention, the recording apparatus includes a display definition information acquisition unit that acquires display definition information of a connected monitor device. There is provided a recording apparatus having third determination means for making the determination based on acquired display definition information.

  6th invention has the attribute information acquisition part which acquires the attribute information of a recording medium in the recording apparatus in 1st invention thru | or 5th invention, The attribute information of the recording medium acquired in the 1st judgment part A recording device having a fourth determination means for making the determination based on the above is provided.

  The seventh invention further includes an image quality selection section for allowing the user to select an image quality when recording on the recording medium in accordance with the output from the warning output section in the recording apparatus according to the first to sixth inventions. A recording device is provided.

  According to the first aspect of the present invention configured as described above, when automatic image quality adjustment is performed and video is recorded on a recording medium, the image quality after the automatic adjustment is acquired and it is determined whether the image quality satisfies a predetermined condition. It is possible to output a warning according to the determination result. Thereby, the user can know in advance the deterioration of the image quality due to the automatic image quality adjustment.

  According to the second aspect of the present invention, the capacity of the video to be recorded can be compared with the remaining capacity of the recording medium to determine whether or not automatic image quality adjustment is necessary. Thereby, it is possible to automatically adjust the image quality according to the remaining capacity of the recording medium.

  According to the third aspect of the present invention, it is possible to output a warning and prompt the user to change the setting when the quality is lower than the predetermined quality by determining whether the image quality after the automatic adjustment is lower than the predetermined quality.

  According to the fourth aspect of the present invention, it is possible to determine whether or not the image quality before and after the automatic adjustment is deteriorated by a predetermined amount or more. As a result, when the image quality is lower than the current image quality by a certain level, it is possible to perform processing such as outputting a warning.

  According to the fifth aspect of the present invention, it is possible to acquire the resolution of the connected monitor, output a warning when the image quality of the recorded video does not satisfy the conditions regarding the resolution, and prompt the user to change the setting. .

  According to the sixth aspect of the present invention, it is possible to acquire the attribute of the recording medium and determine whether the image quality of the recorded video satisfies a predetermined condition regarding the attribute of the recording medium. Thus, for example, when the quality of the video to be recorded exceeds the capacity of the recording medium, a warning can be issued to alert the user.

  According to the seventh aspect of the present invention, when a warning is output to the user, the user can freely select the image quality.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to these embodiments, and can be implemented in various modes without departing from the spirit of the present invention. In the first embodiment, claims 1, 7, and 8 will be mainly described. In the second embodiment, claims 2 and 9 will be mainly described. In the third embodiment, claims 3 and 4 will be mainly described. In the fourth embodiment, claims 5 and 6 will be mainly described.

Example 1
<Overview>
FIG. 1 is a diagram showing an outline of the recording apparatus of this embodiment. As shown in the drawing, the DVD-R recording medium (0102) is dubbed from the storage device built in the recording device (0101). At this time, the original video recorded in the recording device has a capacity of 25 GB. When trying to dubb this to a DVD-R, it is necessary to compress it to 4.7 GB to reduce the capacity. This compression rate can be automatically adjusted by the recording apparatus. However, when compression is performed, the capacity is reduced and the image quality is lowered (0103, 0104). If this is left to automatic adjustment, image quality may be reduced to a level unintended by the user. For this reason, when the bit rate is adjusted from 25 Mbps to 5 Mbps by automatic adjustment and the image quality after the automatic adjustment deteriorates and the predetermined condition (for example, DVD video quality: 8 Mbps or more) is not satisfied, As described above, a warning (0105) is output on the dubbing setting screen (0106) to prompt the user to pay attention.

<Functional configuration>
FIG. 2 is a diagram illustrating an example of functional blocks in the recording apparatus of the present embodiment. As shown in this figure, the “recording apparatus” (0200) of this embodiment includes an “automatic image quality adjustment unit” (0201), an “image quality information acquisition unit” (0202), and a “condition holding unit” (0203). It has a “first determination unit” (0204) and a “warning output unit” (0205).

  Note that the functional blocks of the recording apparatus described below can be realized as hardware, software, or both hardware and software. Specifically, if a computer is used, a CPU, a main memory, a bus, or a secondary recording medium (a storage medium such as a hard disk, a non-volatile memory, a CD-ROM or a DVD-ROM, and a reading drive for the medium) Etc.), hardware components such as printing devices, display devices, other external peripheral devices, I / O ports for the external peripheral devices, driver programs for controlling the hardware, other application programs, and information input Examples include user interfaces that are used.

  In addition, these hardware and software process the programs developed on the main memory with the CPU, and process, store, and output data stored on the memory and hard disk and data input via the interface. It is used for processing or controlling each hardware component. The present invention can be realized not only as an apparatus but also as a method. A part of the invention can be configured as software. Furthermore, a software product used for causing a computer to execute such software and a recording medium in which the product is fixed to a recording medium are naturally included in the technical scope of the present invention (the same applies throughout the present specification). Is).

  The “automatic image quality adjustment unit” (0201) has a function of automatically adjusting image quality when recording video on a recording medium. Specifically, when dubbing is performed, automatic adjustment is performed by adjusting parameters such as a bit rate in accordance with the remaining amount of the recording medium as necessary. For example, when 20 GB of video data is recorded on a recording medium with a remaining amount of 4 GB at 20 Mbps, the bit rate of the video data is automatically adjusted to 4 Mbps and re-encoded. Other parameters for image quality adjustment include resolution (for example, 1920 × 1080 full HD resolution → 1280 × 720 resolution), the number of image frames per second (for example, 60 fps → 30 fps), and B frames in the video. And P frames (image data with a small amount of data using motion vectors), quantization coefficient, identification information of codec (for example, MPEG2-H.264) used for re-encoding, interlaced video (video by half image) / For example, identification information of a progressive video (a video based on a complete image) is included. Then, automatic adjustment is performed by the arithmetic processing for selecting the encoding parameter as described above so as to approach the target value (image quality, capacity) after recording on the medium. Then, the parameter value selected by the arithmetic processing to be used for automatic adjustment is output to the image quality information acquisition unit.

  In the automatic image quality adjustment unit, it is not necessary to actually perform the compression process, and it is sufficient to determine the encoding parameter by estimation. Of course, the parameter may be determined based on an actual measurement value obtained by performing the encoding process in the storage device of the recording apparatus.

  The “image quality information acquisition unit” (0202) has a function of acquiring image quality information indicating the image quality after automatic adjustment. The image quality information acquisition unit acquires the image quality information of the video adjusted by the automatic image quality adjustment unit, and outputs it to the first determination unit. Here, the image quality information includes the value of the encode parameter adjusted by the automatic image quality adjustment unit, or the difference / comparison value of the encode parameter before and after the adjustment by the automatic image quality adjustment unit. Specifically, information such as “bit rate 8 Mbps” and “resolution 640 × 480”, and information such as “bit rate is 1/2 before and after automatic adjustment” can be given.

  In addition, when the image quality adjustment parameter includes information indicating a change to a codec having high compression efficiency (it is difficult to visually recognize a decrease in image quality even if the bit rate is lowered to some extent), the image quality information is corrected. It may be configured. Specifically, if the compression efficiency of H264 (after automatic adjustment) is twice that of MPEG2 (before automatic adjustment), the image quality information “bit rate 4 Mbps” is equivalent to “bit rate 8 Mbps (converted to MPEG2)”. And so on.

  Alternatively, as the image quality information, an index representing the image quality corresponding to the acquired encoding parameter may be selected instead of the parameter itself and output to the first determination unit. For example, when the bit rate is determined to be 4 Mbps as a result of automatic adjustment, the SP image quality may be selected and identification information indicating the SP image quality may be output to the first determination unit. In addition, a value corresponding to an encoding parameter determined by taking a continuous value set in advance according to an image quality adjustment parameter such as MN01 (0.1 Mbps, 15 fps) to 65 (25 Mbps, 60 fps) is output to the first determination unit. You may do it. Then, by using the image quality information output in this way, the first determination unit described later determines the degree of image quality degradation due to automatic adjustment.

  The “condition holding unit” (0203) has a function of holding a predetermined condition relating to image quality for outputting a warning. Specifically, XP (for example, a bit rate of 8 Mbps), SP (for example, a bit rate of 4 Mbps), LP (for example, a bit rate of 2 Mbps), EP (for example, a bit rate of 1 Mbps), HD (for example, a resolution of 1920 × 1080), which are indexes relating to image quality. , SD (for example, resolution 640 × 480) or the like may be held as a condition, or continuous values such as MN01 to 65 described above may be held as a condition. . The held condition is output to the first determination unit. The condition as described above held in the condition holding unit is used as a comparison target with the image quality information for determining the degree of deterioration in image quality due to automatic adjustment. This condition may be specified by the user via a GUI (graphical user interface) or the like.

  The “first determination unit” (0204) has a function of determining whether or not the acquired image quality information satisfies a predetermined condition. Specifically, for example, when the image quality information of “bit rate 4 Mbps” is acquired with respect to a predetermined condition “a warning is not output if the bit rate is 8 Mbps or higher”, a determination result that a warning is output Is output. Alternatively, the predetermined condition is “a warning is output if a video that has been HD quality or higher before automatic adjustment is automatically adjusted to SD quality or lower”, and the acquired image quality information is “before automatic adjustment: HD image quality, If “after automatic adjustment: SD image quality”, a determination result indicating that a warning is output is output. The result of the determination by the first determination unit is output to the warning output unit.

  The “warning output unit” (0205) has a function of outputting a warning according to the determination result of the determination unit. “According to the determination result” means, for example, that the determination result in the first determination unit is a warning that the acquired image quality information is a result that does not satisfy the condition of the condition holding unit. The purpose is to output. The “output warning” may be performed by outputting an icon or the like through a user interface such as a dubbing setting screen as shown in FIG. As other warning output formats, for example, a message such as "Image quality may be degraded" or "Please replace with a medium with a large remaining capacity" is displayed in a predetermined area on the display or OSD (on-screen display). A method of displaying or outputting a voice of a similar message can be mentioned. In addition, the sample image after the automatic adjustment may be displayed on the display so that the user is warned of the deterioration of the image quality due to the automatic adjustment.

<Another overview>
Further, the image quality may be selectable by the user according to the warning from the warning output unit. FIG. 3 is a conceptual diagram showing another outline of the present embodiment. In another outline of the present embodiment, as shown in this figure, a submenu (“image quality selection menu” in the figure) is displayed in response to a warning, and the bit rate, resolution, FPS (number of images per second) For example, the parameter that is not important to the user can be selected again from the parameters that influence the image quality, such as the number of used B frames, quantization coefficient, codec used, and the like.

<Another functional configuration>
FIG. 4 is a diagram illustrating an example of functional blocks in the recording apparatus of the present embodiment. As shown in this figure, the “recording apparatus” (0400) of this embodiment includes an “automatic image quality adjustment unit” (0401), an “image quality information acquisition unit” (0402), and a “condition holding unit” (0403). It has a “first determination unit” (0404) and a “warning output unit” (0405). Description of these functional configurations has already been described above, and will be omitted. A characteristic point of another functional configuration of the present embodiment is that it has an “image quality selection unit” (0406) in addition to the above configuration.

  The “image quality selection unit” (0406) has a function for allowing the user to select the image quality when recording on a recording medium in accordance with the output from the warning output unit. Specifically, it has a function of receiving a warning output from the warning output unit as a trigger, performing a display prompting the user to select an image quality as shown in FIG. FIG. 3 shows a configuration in which, for example, the MN value of the image quality index value is changed using a slider bar. However, for example, a configuration in which values such as bit rate and resolution are directly input may be used. good. At that time, only selectable indexes may be displayed in a limited manner.

<Process flow>
FIG. 5 is a flowchart illustrating an example of a processing flow in the recording apparatus of the present embodiment. Note that the steps shown below may be processing steps that constitute a program for controlling a computer recorded on a medium. As shown in this figure, first, automatic image quality adjustment is performed (step S0501). Next, image quality information is acquired based on parameters used for the automatic adjustment (step S0502). Next, it is determined whether or not the image quality indicated by the image quality information satisfies a predetermined condition (step S0503). If the condition is not satisfied, a warning is output (step S0504). On the other hand, if the condition is satisfied, the process is terminated.

<Other processing flow>
Note that when another configuration of the present embodiment (a configuration in which the above-described image quality selection UI and the like are displayed and an input from the user is received) is taken, the processing flow is as shown in FIG. The processing flow at this time is the same as the processing flow shown in FIG. 5 until the warning is output (steps S0601 to S0604). In another processing flow of the present embodiment, there is a process (step S0605) of accepting selection of image quality when recording on a recording medium via, for example, a GUI by submenu display or the like and adjusting the image quality. . When the process for adjusting the image quality (step S0605) ends, the process returns to the process for automatically adjusting the image quality (step S0601).

<Hardware configuration>
FIG. 7 is a schematic diagram showing an example of the configuration of the recording apparatus when the above functional components are realized as hardware. The operation of each hardware component in the recording apparatus of the present embodiment will be described using this figure. As shown in this figure, the hardware configuration of the recording apparatus of this embodiment is “CPU” (0701), “ROM” (0702), “RAM” (0703), and “encoder” (0704). , “HDD” (0705), “DVD drive” (0706), “UI” (0707) including operation buttons and remote control, “tuner” (0708), “TS-demux (TS demultiplexer)” "(0709)", "Decoder" (0710, 0711) for decoding audio and video, and "D / A converter" (0712) for analog output of the decoded audio data to the speaker (0713). . Note that a display device (0714) such as a liquid crystal monitor is connected to the video decoder (0711), and an antenna (0715) is connected to the tuner (0708). The hardware is connected to each other via a data communication path such as a “system bus” (0716) as shown in the figure, and performs transmission / reception and processing of information. The “RAM” (0703) provides a work area that is also a work area of the program at the same time as reading a program for performing various processes to be executed by the “CPU” (0701).

  In this process, as described above, the image quality information is compared with the “condition” to determine whether or not to output a warning associated with image quality degradation. There are various acquisition patterns for the “condition”. Things. Therefore, in the following example, an example will be described in which the image quality condition desired by the user is input and used as a condition for comparing with the image quality information every time the video image quality is automatically adjusted by dubbing or the like. Of course, the conditions may be stored in advance as setting information in a ROM or the like, and may be read and used when performing automatic adjustment of video image quality.

  First, the content received in the broadcast wave received by the antenna (0715) and extracted by the tuner (0708) is extracted through a demodulation circuit (not shown) and separated into video data and audio data by the TS-demux (0709). Is done. Then, the audio data undergoes the decoding process of the audio decoder (0711) and is output from the speaker (0713) via the D / A converter (0712). The video data is output and displayed on the display device (0714) via the video decoder (0710).

  The content extracted from the broadcast wave is output to the encoder (0704). In the encoder (0704), for example, encoding processing is executed at “8 Mbps”, and video data such as “60 minutes” is stored in the HDD (0705).

  Here, when the user selects the dubbing function for dubbing the recorded content through the UI (0707), the dubbing control program recorded in the ROM (0702) is activated. The content (video data) to be dubbed by the UI (0707), the dubbing destination, and the dubbing conditions (image quality etc.) such as “SP image quality (4 Mbps or higher)” are designated and stored at address 2 on the RAM. Next, the DVD drive (0706) acquires the media type and remaining capacity stored in the drive. Also, the video time information of the content is acquired. The video time information and the remaining capacity value are passed to the dubbing control program, and based on this, an encoding parameter such as “bit rate: 2 Mbps” is calculated by the CPU (0701). Next, the “bit rate-image quality setting table” or the like is referred to by the dubbing control program, and the image quality information corresponding to the calculated parameter, for example, information such as “LP image quality” is stored at address 1 on the RAM (0703). . Next, in the calculation on the CPU (0701), the values stored in the addresses 1 and 2 on the RAM (0703) are compared. As a result, if the image quality information at the address 1 satisfies the condition 2, the process ends, and the process proceeds to the dubbing process by the re-encoding process via the content encoder as it is. On the other hand, if the CPU (0701) determines that the condition is not satisfied, a warning is issued via the display device (0714) or the D / A converter (0712) according to the dubbing control program. Is output.

  In the case where the recording apparatus has another configuration described above, the following processing may be executed. That is, when the CPU (0701) outputs a determination result that the image quality information at address 1 in the RAM (0703) does not satisfy the condition 2, a menu for selecting the image quality is displayed by the dubbing control program. (0714), and re-selection of the image quality by the user is accepted through the UI (0707). The value indicating the received and selected image quality is overwritten with the value of condition 1 stored at address 2 on the RAM. Then, the CPU (0701) calculates the encoding parameter again.

  In the present embodiment, dubbing (copy / move) of recorded video data is taken as an example, and the warning output process related to the automatic image quality adjustment has been described. However, the present invention is not limited to the dubbing process. For example, when a program or the like being broadcast on a broadcast wave is recorded on a recording medium, the above-described determination processing related to automatic image quality adjustment may be executed in real time and a warning may be output. Alternatively, when video data that is streamed via the Internet is recorded on a recording medium, the above determination processing related to automatic image quality adjustment may be executed in real time and a warning may be output.

<Brief description of effect>
As described above, the recording apparatus according to the present embodiment outputs a warning when the image quality does not satisfy a predetermined condition by automatic image quality adjustment, thereby performing dubbing with a decrease in image quality exceeding the allowable amount of the user. The situation can be avoided. Further, by accepting selection of image quality again, it is possible to provide alternative means such as dubbing with image quality within an allowable range.

<< Example 2 >>
<Overview>
FIG. 8 is a diagram showing an outline of the dubbing menu screen of the recording apparatus in the present embodiment. As shown in this figure, a program to be dubbed is selected in the thumbnail display (0801) displayed at the bottom, and dubbing is executed. In this embodiment, an indicator (0802) indicating the remaining disk capacity is displayed at the top during dubbing. This indicator shows the breakdown of disk capacity. The left shaded portion (0803) of the indicator is an area that has already been used, and the right shaded portion (0804) indicates the amount of disk usage when a program selected by a thumbnail is recorded. Here, since the disk capacity is up to the triangular mark (0805), it indicates that when this program is recorded, the disk capacity of the recording destination is exceeded. In order to fit the remaining capacity of the disc, it is necessary to perform automatic compression of image quality, such as lowering the bit rate, and to perform recompression by increasing the compression rate. As a result, when the image quality becomes a certain value or less, a warning is output as an icon (0806). As a result, when automatic image quality adjustment is performed for recording so as to fit within the remaining amount of the disc, a warning can be output when image quality degradation that exceeds the allowable range of the user occurs. Therefore, the user can take appropriate measures such as using a disk with a large remaining amount or changing the type of media.

<Functional configuration>
FIG. 9 is a diagram illustrating an example of functional blocks in the recording apparatus of the present embodiment. As shown in this figure, the “recording apparatus” (0900) of this embodiment includes an “automatic image quality adjustment unit” (0901), an “image quality information acquisition unit” (0902), and a “condition holding unit” (0903). It has a “first determination unit” (0904) and a “warning output unit” (0905). Description of these functional configurations has already been described in the first embodiment, and will be omitted. A characteristic point of the functional configuration of the present embodiment is that the “automatic image quality adjustment unit” (0901) includes “adjustment necessity determination unit” (0907) in addition to the above configuration.

  The “adjustment necessity determination unit” (0907) compares the amount of video information to be recorded with the remaining capacity of the recording medium and records the comparison result in the remaining capacity in the automatic image quality adjustment unit (0901). Has a function of determining whether it is necessary to automatically adjust the image quality. Specifically, the necessity of automatic adjustment is obtained by acquiring the amount of video information to be recorded selected by the thumbnail as shown in FIG. 8 and the remaining capacity of the recording destination disc and comparing them. Judging.

  For example, when recording 4 GB of video recorded at a bit rate of 20 Mbps on a disk with a remaining capacity of 2 GB, this means determines that adjustment is necessary. At this time, in the automatic image quality adjustment unit, the image quality becomes the maximum image quality at which 10 Mbps, which is half the bit rate, is ensured so as to be kept to the minimum capacity 2 GB of the disk. Accordingly, a condition of a bit rate of 10 Mbps or less is imposed as a restriction in determining the encoding parameter in the automatic image quality adjustment unit (0901).

<Process flow>
FIG. 10 is a flowchart illustrating an example of a processing flow in the recording apparatus of the present embodiment. Note that the steps shown below may be processing steps that constitute a program for controlling a computer recorded on a medium. As shown in this figure, it is first determined whether or not the amount of video information to be recorded exceeds the remaining capacity of the recording medium (step S1001). Therefore, in the case of a determination result that it does not exceed, it is determined that there is no need to automatically adjust the image quality, and the process proceeds to, for example, dubbing. On the other hand, in the case of a determination result that it has exceeded, the image quality is automatically adjusted (step S1002). Next, image quality information is acquired (step S1003). Next, it is determined whether the image quality satisfies a predetermined condition (step S1004). If the condition is not satisfied, a warning is output (step S1005). On the other hand, if the condition is satisfied, the process is terminated, and the process proceeds to a process such as dubbing.

<Hardware configuration>
FIG. 11 is a schematic diagram illustrating an example of the configuration of the recording apparatus when the above functional components are realized as hardware. The operation of each hardware component in the recording apparatus of the present embodiment will be described using this figure. As shown in this figure, the hardware configuration of the recording apparatus according to the present embodiment is the same as that of the first embodiment, and hence the description thereof is omitted.

  Here, when the user selects the dubbing function through the UI (1107), the dubbing control program recorded in the ROM (1102) is activated. The content to be dubbed by the UI (1107), the dubbing destination, and the dubbing condition (image quality etc.) are designated and stored in the address 2 on the RAM (1103). Next, the DVD drive (1106) acquires the type and remaining capacity of the media stored in the drive, and the remaining capacity is stored at address 4 of the RAM (1103). As for the capacity of content to be dubbed, the capacity of the content stored in the HDD is acquired and stored in address 3 on the RAM (1103). The value of the remaining capacity is transferred to the dubbing control program, and the CPU (1101) determines whether or not compression is necessary. Whether or not compression is necessary is determined by comparing the remaining capacity of the disc and the capacity of the content to be dubbed in the CPU (1101). If compression is necessary, the video time information of the content is also acquired. Based on the video time information and the remaining capacity, the encoding parameter is calculated by the CPU (1101) so as to be within the remaining capacity. Next, the dubbing control program refers to the “bit rate-image quality setting table” and the like, and the image quality information corresponding to the calculated parameters is stored at address 1 on the RAM (0703). Next, in the calculation on the CPU (1101), the values stored in the addresses 1 and 2 on the RAM (1103) are compared. As a result, if the image quality information at address 1 satisfies the condition at address 2, the process ends. On the other hand, if the condition is not satisfied, a warning is output to the display device (1114) by the dubbing control program.

<Brief description of effect>
As described above, the recording apparatus of this embodiment can determine whether or not automatic image quality adjustment is necessary by comparing the remaining capacity of the recording medium with the amount of video information to be recorded. Thus, a warning can be output when the image quality does not satisfy a predetermined condition as a result of automatic adjustment. For this reason, the user can take measures such as using a recording medium with a large remaining amount or reducing the contents to be recorded in order to record with an image quality within an allowable range.

Example 3
<Overview>
FIG. 12 is a diagram showing an outline of the recording apparatus in the present embodiment. As shown in this figure, when dubbing is performed on the medium from the recorder device, there is a case where the image quality is lowered by automatic image quality adjustment. For example, as shown in the figure, when dubbing is performed on a media having a capacity of 4.7 GB, it is necessary to compress the original image having the size of 25 GB and the image quality of the MN 40. As a result of the automatic adjustment, it is necessary to reduce the image quality of the MN 40 to the image quality of the MN 10 by compressing it so that it can be reduced to 4.7 GB. In the recording apparatus of the present embodiment, it is possible to perform processing such as setting conditions relating to image quality degradation and outputting a warning when the conditions are met by automatic adjustment. For example, in the figure, when the MN 20 is used as the image quality degradation criterion, the MN 10 is below this value, so that a process for outputting a warning is possible. In other words, the above example is characterized in that, in the above outline, the decrease due to the automatic adjustment of the video image quality is determined by the “absolute condition” based only on the image quality information after the automatic adjustment. Of course, the present embodiment is not limited to this, and the image quality may be determined based on “relative conditions” as will be described later.

<Functional configuration>
FIG. 13 is a diagram illustrating an example of functional blocks in the recording apparatus of the present embodiment. As shown in this figure, the “recording apparatus” (1300) of this embodiment includes an “automatic image quality adjustment unit” (1301), an “image quality information acquisition unit” (1302), and a “condition holding unit” (1303). It has a “first determination unit” (1304) and a “warning output unit” (1305). Description of these functional configurations has already been described in the first embodiment, and will be omitted. A characteristic point of another functional configuration of the present embodiment is that the “first determination unit” (1304) includes “first determination means” (1308) in addition to the above configuration.

  The “first determination unit” (1308) has a function of determining whether the image quality after the automatic adjustment is equal to or lower than a predetermined quality in the first determination unit (1304). Here, the “predetermined quality” is a preset standard for image quality. Set a lower-limit value that can tolerate normal image quality degradation. The setting is performed using numerical information such as a bit rate of 4 Mbps, an index indicating resolution such as HD image quality, an index such as MN01 to 65, and an index such as XP, EP, SP, LP, SD, and HD. This predetermined condition is compared with information relating to image quality acquired as a result of automatic adjustment by the image quality information acquisition unit (1020), that is, values such as MN01 to 65, XP, EP, SP, LP, SD, and HD. Then, it is determined whether or not the image quality after the automatic adjustment is lower than a predetermined condition. When it is determined that the image quality after the automatic adjustment is lower than the predetermined condition, a warning is output by the warning output unit (1305).

<Another overview>
In another example of the recording apparatus according to the present embodiment, a recording apparatus that issues a warning when an image quality gap is equal to or greater than a predetermined value before and after automatic adjustment will be described. In other words, in this other example, the decrease due to the automatic adjustment of the video image quality is determined based on the “relative condition” based on the relative value before and after the automatic adjustment. Referring to FIG. 11, for example, when the image quality reduction allowable amount is set in advance as a relative value before automatic adjustment, such as “MN after automatic adjustment is within −10 before adjustment”, in the figure, Since the image quality is reduced by -30 in the MN value, such as MN40 to MN10, processing such as issuing a warning is possible.

<Another functional configuration>
FIG. 14 is a diagram illustrating an example of functional blocks in the recording apparatus of the present embodiment. As shown in this figure, the “recording apparatus” (1400) of this embodiment includes an “automatic image quality adjustment unit” (1401), an “image quality information acquisition unit” (1402), and a “condition holding unit” (1403). It has a “first determination unit” (1404) and a “warning output unit” (1405). Description of these functional configurations has already been described in the first embodiment, and will be omitted. A characteristic point of another functional configuration of the present embodiment is that the “first determination unit” (1404) includes “second determination means” (1409) in addition to the above configuration.

  The “second determination unit” (1409) has a function of determining in the first determination unit (1404) whether the image quality difference before and after automatic adjustment is equal to or greater than a predetermined difference value. “Image quality difference” means, for example, a bit rate difference value, a difference value between two values MN01 to 65, which are indexes representing image quality, and two values such as XP, SP, LP, EP, SD, and HD. The number of stages in between. “Predetermined image quality difference” refers to the image quality difference set in advance. Usually, the maximum image quality difference that can be tolerated by image quality degradation is set.

  In this means, the difference between the image quality information after the automatic adjustment acquired by the image quality information acquisition unit (1402) and the image quality information before the automatic adjustment is calculated. If it is determined that the difference is greater than or equal to a predetermined image quality difference, a warning is output by the warning output unit (1405).

<Process flow>
FIG. 15 is a flowchart illustrating an example of a processing flow in the recording apparatus of the present embodiment. Note that the steps shown below may be processing steps that constitute a program for controlling a computer recorded on a medium. As shown in this figure, first, automatic image quality adjustment is performed (step S1501). Next, image quality information is acquired (step S1502). Using the acquired image quality information, it is determined whether or not the image quality is below a predetermined quality (step S1503). If the condition is not satisfied, a warning is output (step S1504). On the other hand, if the condition is satisfied, the process is terminated.

<Other processing flow>
FIG. 16 is a flowchart illustrating an example of another processing flow in the recording apparatus according to the present exemplary embodiment. Note that the steps shown below may be processing steps that constitute a program for controlling a computer recorded on a medium. As shown in this figure, first, automatic image quality adjustment is performed (step S1601). Next, image quality information is acquired (step S1602). Using the acquired image quality information after automatic adjustment and the image quality information before automatic adjustment, it is determined whether the image quality satisfies a predetermined condition (step S1603). If the condition is not satisfied, a warning is output (step S1604). On the other hand, if the condition is satisfied, the process is terminated.

<Hardware configuration>
FIG. 17 is a schematic diagram illustrating an example of the configuration of the recording apparatus when the functional components are realized as hardware. The operation of each hardware component in the recording apparatus of the present embodiment will be described using this figure. As shown in this figure, the hardware configuration of the recording apparatus according to the present embodiment is the same as that of the first embodiment, and hence the description thereof is omitted.

  Here, when the user selects the dubbing function through the UI (1707), the dubbing control program recorded in the ROM (1702) is activated. The content to be dubbed by the UI (1707), the dubbing destination, and the dubbing conditions (image quality etc.) are designated and stored on the RAM (1703). At this time, either or both of the allowable lower limit of image quality and the allowable amount of image quality degradation are stored in advance at addresses 3 and 4 as predetermined conditions. Further, information on the image quality of the content to be dubbed is stored at address 2 on the RAM (1703).

  Here, automatic adjustment of image quality is performed as necessary by the dubbing control program. Specifically, the video time information of the content is also acquired, and the encoding parameters are calculated by the calculation of the CPU (1701) using the video time information and the remaining capacity so as to be within the specified capacity. Next, the dubbing control program refers to the “bit rate-image quality setting table” and the like, and the image quality information (XP, LP, MN value, etc.) corresponding to the calculated parameters is stored in address 1 on the RAM (1703). Stored as

  Subsequently, comparison processing between the image quality information and condition 3 (absolute condition) or condition 4 (relative condition) is performed. First, an address on the RAM (1703) is set as an allowable amount of the image quality lower limit in advance. A case where condition 3 is stored in 3 will be described. When the image quality information is stored at address 1 on the RAM (1703), the value of the image quality information and the condition stored at address 3 are compared by calculation on the CPU (1701). As a result, if the image quality information at the address 1 satisfies the condition at the address 3, the process proceeds to the content dubbing process. On the other hand, when the image quality is lower than that at address 3, a warning is output by the dubbing control program and output to the display device (1714).

  On the other hand, a case where a difference value allowed as condition 4 is stored in advance at address 4 on the RAM (1703) as an allowable amount of image quality degradation will be described. When image quality information, for example, “MN value 10” is stored at address 1 on the RAM (1703), the difference from the image quality before automatic adjustment stored at address 2 such as “MN value 40” is stored in the CPU (1701). Calculated by The calculated difference is held in a temporary storage area on the RAM. This time, the held difference value is compared with the value of the condition 4 stored in the address 4 by an operation on the CPU (1701). As a result, if the calculated difference value is below the condition 4 of the address 4, it is determined that the difference is within the allowable range, and the process directly proceeds to the content dubbing process. On the other hand, when the calculated difference value exceeds the condition 4 of the address 4, a warning is output and output to the display device (1714) by the dubbing control program.

  If both condition 3 and condition 4 are set, the determination may be made by combining these two conditions with AND and OR.

<Brief description of effect>
As described above, according to the recording apparatus of the present embodiment, when the image quality after the automatic adjustment is equal to or lower than the predetermined quality by the automatic adjustment of the image quality, or when the difference is equal to or larger than the predetermined difference value before and after the automatic adjustment, A warning can be output. Accordingly, as a result of automatic image quality adjustment during dubbing or the like, it is possible to prevent the image quality from deteriorating beyond the allowable amount of the user.

Example 4
<Overview>
FIG. 18 is a diagram showing an outline of the recording apparatus in the present embodiment. As shown in this figure, a monitor device (1802) compatible with HDTV and having a resolution (display definition) of, for example, “1920 × 1080” is connected to the recorder device (1801). At this time, the recorder device can acquire the display definition information of the connected monitor device using the HDMI cable (1803) or the like. The menu screen displays resolution information (1804) of the monitor used for reproduction. In the recorder device, a program recorded in HD quality (for example, resolution 1920 × 1080) is to be dubbed to a DVD-R. However, since this program capacity cannot be recorded in HD quality when dubbed to a DVD-R, automatic adjustment with SD image quality (for example, resolution 640 × 480) may occur. Then, even with an HD compatible monitor device, the dubbing data is down-converted to an SD image quality image and cannot be reproduced in HD quality. In such a case, the recording apparatus of the present embodiment can issue a warning (1805) to the user as shown in the drawing.

<Functional configuration>
FIG. 19 is a diagram illustrating an example of functional blocks in the recording apparatus of the present embodiment. As shown in this figure, the “recording apparatus” (1900) of this embodiment includes an “automatic image quality adjustment unit” (1901), an “image quality information acquisition unit” (1902), and a “condition holding unit” (1903). And a “first determination unit” (1904) and a “warning output unit” (1905). Description of these functional configurations has already been described in the first embodiment, and will be omitted. The characteristic points of another functional configuration of the present embodiment are that it has a “display definition information acquisition unit” (1910) in addition to the above configuration, and the “first determination unit” (1904) is “third”. It is a point which has a judgment means "(1911).

  The “display definition information acquisition unit” (1910) has a function of acquiring display definition information of the connected monitor device. “Display definition” refers to the displayable resolution of the monitor device. For example, “1920 × 1080”, “1440 × 810”, a value indicating the number of horizontal × vertical pixels of the screen, or “2 million pixels” Or a value indicating the total number of pixels on the screen, or index information indicating the number of horizontal and vertical pixels on the screen such as “HD (for example, 1920 × 1080)” or “SD (for example, 640 × 480)”. The display definition information can be acquired, for example, by exchanging information between the monitor device and the recording device via an HDMI cable. In addition, the display definition information acquisition unit may acquire display definition information using wireless bidirectional communication such as IrSimple (registered trademark). The acquired display definition information is output to the second determination means.

  The “third determination unit” (1911) has a function of executing the determination based on the acquired display definition information in the first determination unit (1904). Specifically, input of image quality information is received from the image quality information acquisition unit (1902), and input of display definition information is received from the display definition information acquisition unit (1910). For example, when a condition is imposed such that the image quality information does not fall below the display definition, the received display definition information is used as a predetermined reference, and the information regarding the resolution of the video indicated by the image quality information satisfies the reference. A determination is made as to whether or not the condition is satisfied.

<Another overview>
FIG. 20 is a diagram showing another outline of the recording apparatus in the present embodiment. As shown in this figure, BD-R (2002) is inserted into the recorder device as a copy destination recording medium. Then, the recorder apparatus according to the present embodiment reads the attribute information of the BD-R, and acquires information that “recording with HD image quality is possible according to the standard”, for example. When automatic adjustment of image quality is performed when dubbing an HD image quality program in the recorder, the information that “recording is possible at HD image quality according to the standard” is used as a condition for comparing with image quality information. For example, when the information includes “change to SD image quality”, a warning is output. Conversely, a DVD-R (2001) is inserted, and information such as “recording impossible at HD image quality” is acquired from the attribute information. When automatic adjustment of the image quality when dubbing a program in the recorder is performed, the information “Unrecordable at HD image quality” is used to include “change to SD image quality” in the image quality information. However, no warning is output, or when “copying with HD image quality” is indicated in the image quality information, a warning such as “cannot record” is output.

<Another functional configuration>
FIG. 21 is a diagram illustrating an example of functional blocks in the recording apparatus of the present embodiment. As shown in this figure, the “recording apparatus” (2100) of this embodiment includes an “automatic image quality adjustment unit” (2101), an “image quality information acquisition unit” (2102), and a “condition holding unit” (2103). And a “first determination unit” (2104) and a “warning output unit” (2105). Description of these functional configurations has already been described in the first embodiment, and will be omitted. A characteristic point of another functional configuration of the present embodiment is that it has an “attribute information acquisition unit” (2112) in addition to the above configuration, and further the “first determination unit” (2104) includes “fourth determination unit”. (2113).

  The “attribute information acquisition unit” (2112) has a function of acquiring attribute information of the recording medium. Specifically, information such as the type / standard of the recording medium, such as “CD-R”, “DVD-R”, “HD-DVD”, “Blu-ray Disc” (registered trademark) and capacity, etc. Obtain and output information to the third judging means.

  The “third determination unit” (2113) has a function of making the determination based on the acquired attribute information of the recording medium in the first determination unit (2104). This section acquires attribute information of the recording medium from the attribute information acquisition section (2012). Then, for example, a condition associated with the attribute information is acquired from an “attribute information-condition (standard) table” such as “DVD-R cannot record with HD image quality”. Then, using the condition, the image quality information acquired from the image quality information acquisition unit (2002) is compared and determined. Specifically, for example, in the above table, the condition that “recording is impossible in HD image quality” associated with the attribute information “DVD-R” is included in the table, and “change to SD image quality” is included in the image quality information. Even if the warning is not output, a determination process is performed such that a warning such as “Cannot record” is output if the image quality information indicates “Copy with HD image quality”.

<Process flow>
FIG. 22 is a flowchart illustrating an example of a processing flow in the recording apparatus of the present embodiment. Note that the steps shown below may be processing steps that constitute a program for controlling a computer recorded on a medium. As shown in this figure, first, automatic image quality adjustment is performed (step S2201). Next, image quality information is acquired (step S2202). Thereafter, display definition information of the monitor device is acquired (step S2203). Next, it is determined whether the image quality information satisfies a predetermined condition based on the acquired display definition information (step S2204). If the condition is not satisfied, a warning is output (step S2205). On the other hand, if the condition is satisfied, the process is terminated.

<Other processing flow>
FIG. 23 is a flowchart illustrating an example of another processing flow in the recording apparatus of the present embodiment. Note that the steps shown below may be processing steps that constitute a program for controlling a computer recorded on a medium. As shown in this figure, first, automatic image quality adjustment is performed (step S2301). Next, image quality information is acquired (step S2302). Thereafter, the attribute information of the recording medium is acquired (step S2303). Next, it is determined whether or not the image quality information satisfies a predetermined condition based on the attribute of the recording medium (step S2304). If the condition is not satisfied, a warning is output (step S2305). On the other hand, if the condition is satisfied, the process is terminated.

<Hardware configuration>
FIG. 24 is a schematic diagram illustrating an example of the configuration of the recording apparatus when the above functional components are realized as hardware. The operation of each hardware component in the recording apparatus of the present embodiment will be described using this figure. As shown in this figure, the hardware configuration of the recording apparatus according to the present embodiment is the same as that of the first embodiment, and hence the description thereof is omitted.

  Here, when the user selects the dubbing function through the UI (2407), the dubbing control program recorded in the ROM (2402) is activated. The content to be dubbed by the UI (2407), the dubbing destination, and the dubbing condition (image quality etc.) are designated and stored on the RAM (2403). At this time, the CPU (2401) acquires display definition information of the display device (2414) and stores it at address 2 on the RAM (2403).

  When the recording device takes the <other functional configuration>, the CPU (2401) acquires the attribute of the recording medium in the DVD drive and stores it at address 2 on the RAM (2403). The DVD drive is not limited to this, and may be a BD (Blu-Ray Disk registered trademark) drive.

  Then, based on the display definition information stored at the address 2, for example, the CPU (2401) calculates according to the program condition 5 that “the image quality after automatic adjustment does not fall below the display definition information of the monitor device”. And stored in address 3 of the RAM (2403). Further, when the recording device adopts <another functional configuration>, the “attribute information-condition (standard) table” as described above is searched using the attribute information of the recording medium stored at address 2 as a key. Then, condition 6 such as “impossible to record with HD image quality” is acquired. The condition 6 is stored at address 3 of the RAM (2403).

  Here, automatic adjustment of image quality is performed as necessary by the dubbing control program. The encoding parameters are calculated by the CPU (2401) so as to fit in the remaining capacity or the specified capacity, for example, “resolution 640 × 480” or “HD image quality”, and the address on the RAM (2403) 1 is stored as image quality information.

  When the image quality information is stored, the condition 5 held at the address 3 is called on the CPU (2401), and the image quality information at the address 1 held in the RAM (2403) satisfies the condition 5. Is determined by logical operation processing in the CPU (2401). Also, when the recording apparatus adopts <another functional configuration>, the condition 6 of the address 3 is called on the CPU (2401), and whether the image quality information held at the address 1 satisfies the condition 6 or not. The determination is performed by logical operation processing in the CPU (2401).

  As a result of the above determination, if the condition is not met, a dubbing control program outputs a warning and outputs it to the display device (2414).

<Brief description of effect>
As described above, the display device of the present embodiment acquires the display definition information of the connected monitor device and the attribute of the recording medium of the recording destination, and if the user does not satisfy the predetermined condition, the user is warned. Can be issued against. Accordingly, it is possible to record a video with a definition that maximizes its function according to the resolution of the monitor device being used. Further, it is possible to perform recording according to the attribute of the recording destination medium.

FIG. 7 is a diagram for explaining an example of processing performed by the recording apparatus according to the first embodiment. FIG. 4 is a diagram illustrating an example of functional blocks in the recording apparatus according to the first embodiment. FIG. 6 is a diagram for explaining another example of processing performed by the recording apparatus according to the first embodiment. FIG. 6 is a diagram illustrating an example of functional blocks having different functional configurations in the recording apparatus according to the first embodiment. 7 is a flowchart illustrating an example of a processing flow in the recording apparatus according to the first embodiment. 7 is a flowchart illustrating an example of another processing flow in the recording apparatus according to the first exemplary embodiment. FIG. 3 is a schematic diagram illustrating an example of a hardware configuration in the recording apparatus according to the first embodiment. FIG. 10 is a diagram for explaining an example of processing in the recording apparatus according to the second embodiment. FIG. 6 is a diagram illustrating an example of functional blocks in the recording apparatus according to the second embodiment. 7 is a flowchart illustrating an example of a processing flow in the recording apparatus according to the second embodiment. FIG. 6 is a schematic diagram illustrating an example of a hardware configuration in a recording apparatus according to a second embodiment. FIG. 6 is a diagram for explaining an example of processing performed by a recording apparatus according to a third embodiment. FIG. 10 is a diagram illustrating an example of functional blocks in the recording apparatus according to the third embodiment. FIG. 10 is a diagram illustrating an example of functional blocks having different functional configurations in the recording apparatus according to the third embodiment. 10 is a flowchart illustrating an example of a processing flow in the recording apparatus according to the third embodiment. 10 is a flowchart illustrating an example of another processing flow in the recording apparatus according to the third embodiment. Schematic showing an example of a hardware configuration in the recording apparatus of Embodiment 3. FIG. 6 is a diagram for explaining an example of processing performed by a recording apparatus according to a fourth embodiment. FIG. 10 is a diagram illustrating an example of functional blocks in the recording apparatus according to the fourth embodiment. FIG. 10 is a diagram for explaining another example of processing performed by the recording apparatus according to the fourth embodiment. FIG. 10 is a diagram illustrating an example of functional blocks having different functional configurations in the recording apparatus according to the fourth embodiment. 10 is a flowchart illustrating an example of a processing flow in the recording apparatus according to the fourth embodiment. 10 is a flowchart illustrating an example of another processing flow in the recording apparatus according to the fourth embodiment. Schematic showing an example of a hardware configuration in the recording apparatus of Embodiment 4

Explanation of symbols

0200 Recording device 0201 Automatic image quality adjustment unit 0202 Image quality information acquisition unit 0203 First determination unit 0204 Condition holding unit 0205 Warning output unit

Claims (9)

An automatic image quality adjustment unit for automatically adjusting image quality when recording video on a recording medium;
An image quality information acquisition unit for acquiring image quality information indicating the image quality after automatic adjustment;
A condition holding unit for holding predetermined conditions relating to image quality for outputting a warning;
A first determination unit that determines whether or not the acquired image quality information satisfies a predetermined condition;
A warning output unit that outputs a warning according to the determination result in the first determination unit;
A recording apparatus. The automatic image quality adjustment section
An adjustment necessity determination unit that compares the amount of video information to be recorded with the remaining capacity of the recording medium and determines whether it is necessary to automatically adjust the image quality in order to record the comparison result in the remaining capacity. The recording apparatus according to claim 1.   The recording apparatus according to claim 1, wherein the first determination unit includes a first determination unit that determines whether the image quality after the automatic adjustment is equal to or lower than a predetermined quality.   The recording apparatus according to any one of claims 1 to 3, wherein the first determination unit includes a second determination unit that determines whether the image quality difference before and after the automatic adjustment is equal to or greater than a predetermined difference value. A display definition information acquisition unit for acquiring display definition information of the connected monitor device;
The recording apparatus according to claim 1, wherein the first determination unit includes a third determination unit that performs the determination based on the acquired display definition information. Having an attribute information acquisition unit for acquiring attribute information of the recording medium;
The recording apparatus according to claim 1, wherein the first determination unit includes a fourth determination unit that performs the determination based on the acquired attribute information of the recording medium.   The recording apparatus according to claim 1, further comprising an image quality selection unit that allows a user to select an image quality when recording on a recording medium in accordance with an output from the warning output unit. In a recording apparatus having a condition holding unit that holds a predetermined condition relating to image quality for outputting a warning,
An automatic image quality adjustment step for automatically adjusting image quality when recording video on a recording medium;
An image quality information acquisition step for acquiring image quality information indicating the image quality after automatic adjustment;
A first determination step of determining whether the acquired image quality information satisfies the predetermined condition;
A warning output step for outputting a warning according to the determination result in the determination unit;
A recording method. The automatic image quality adjustment step
An adjustment necessity determination sub-step for comparing the amount of video information to be recorded with the remaining capacity of the recording medium and determining whether it is necessary to automatically adjust the image quality in order to record the comparison result in the remaining capacity The recording method according to claim 8.

Images