JP4726848B2 - Video information processing device - Google Patents

Description

  The present invention relates to a video information processing apparatus, and can be applied to, for example, a video recording / playback apparatus that performs recording / playback processing on an optical disk such as a DVD disk and a magnetic disk such as a hard disk.

  As a technique for defining the operation of the recording / reproducing apparatus while maintaining compatibility with the disk of the existing format based on the identification information and the operation definition recorded on the disk, for example, there is a technique according to Patent Document 1.

  In the technique according to Patent Document 1, access operation identification information indicating whether or not an optical disk drive device can access a predetermined optical disk is recorded on the predetermined optical disk. Then, the optical disk drive reads the access operation identification information and compares it with the access operation identification information possessed by the optical disk drive. If the information is not compatible, the optical disk drive device is not compatible with reproduction or recording with the optical disk. Therefore, the optical disk drive device accesses the user data area of the optical disk by the optical head. No action is taken.

JP 2006-12406 A

  In recent years, an apparatus in which an optical disk such as a DVD and a hard disk (HDD) are integrated has become mainstream as a recording / reproducing apparatus. In addition, digital broadcasting is gradually spreading, and there is an increasing demand for recording large-capacity high-definition video of digital broadcasting with the same image quality.

  However, when recording the above-described high-definition video on the HDD, the data capacity is very large, so the HDD free space will be quickly lost, and it may be necessary to erase the unviewed content that has been recorded. .

  Also, when dubbing the above high-definition video from the HDD to the DVD, the image quality cannot be accommodated by the capacity of the DVD, so re-encoding must be performed and high-speed dubbing cannot be performed. Therefore, since a lot of time is spent on the dubbing process, the dubbing to the disk becomes troublesome, and as a result, the dubbing process is extremely rare.

  Therefore, an object of the present invention is to provide a video information processing apparatus capable of saving the recording capacity of a storage unit included in the apparatus while preventing a deterioration in the quality of a reproduced image. It is another object of the present invention to provide a video information processing apparatus that does not require re-encoding when dubbing from a storage unit included in the apparatus to a recording medium that is detachable from the apparatus.

In order to achieve the above object, a video information processing apparatus according to claim 1 according to the present invention includes a data dividing unit that divides a series of video information into first information and second information; A recording medium attaching / detaching unit capable of attaching / detaching a recording medium on which the first information is recorded, and a storage unit on which the second information is recorded are provided. In addition, a recording operation prohibition information is recorded on the recording medium, and a controller unit that determines whether to perform the recording operation of the first information on the recording medium according to the recording operation prohibition information. It has more.

  The video information processing apparatus according to claim 1 of the present invention divides a series of video information into first information and second information, and records the first information on a recording medium that is detachable from the outside. The second information is recorded in the storage unit inside the device.

Therefore, it is possible to save the capacity of the storage unit as compared with the case where a series of video information is recorded only in the storage unit while preventing the degradation of the image quality of the reproduced image.
In the video information processing apparatus according to claim 1 of the present invention, it is determined whether or not to perform the recording operation of the first information on the recording medium according to the recording operation prohibition information stored in the recording medium. A controller unit is further provided.
Therefore, on the optical disc side, it is possible to manage and control the recording operation of the divided first information by the video information processing apparatus.

  Hereinafter, the present invention will be specifically described with reference to the drawings showing embodiments thereof.

<Embodiment 1>
(Description of optical disc format)
FIG. 1 is a diagram showing a recording area format of an optical disc 1 used in recording / playback processing in the video information processing apparatus according to the present embodiment. As the optical disc 1, for example, various DVD discs including a DVD-ROM (Digital Versatile Disk Read Only Memory), a DVD-R (Recordable), and a DVD-RW (Rewriteable) can be adopted.

  As shown in FIG. 1A, the optical disc 1 includes a BCA (Burst Cutting Area) area 120, a lead-in area 121, a user data area 122, and a lead from the inner circumference side to the outer circumference side of the optical disc 1. An out area 123 is arranged. Here, information after the manufacture of the optical disc 1 is recorded in the BCA area 120. In the lead-in area 121 and the lead-out area 123, physical characteristic information of the optical disc 1 is recorded. In the user data area 122, the content data body is recorded.

  When the optical disc 1 is reproduced in the video information processing apparatus, the optical disc 1 is reproduced sequentially from the inner circumference side toward the outer circumference side.

  FIG. 1B shows the recording format of the BCA area 120 and the lead-in area 121 more specifically. As shown in FIG. 1B, identification information 124 (hereinafter referred to as medium identification information) 124 of the optical disc 1 itself is recorded in the BCA area 120. The medium identification information 124 is information for identifying the optical disc 1 and represents, for example, a serial ID. In the lead-in area 121, operation management information 125 used for managing and controlling the operation of the video information processing apparatus for reproducing the optical disc 1 is recorded.

  FIG. 1C shows the recording format of the operation management information 125 more specifically. As shown in FIG. 1C, the operation management information 125 includes identification information 126, an operation definition 127, address information 128, and a reserve area 129. The identification information 126 is definition information about an operation performed by the video information processing apparatus when recording / reproducing the optical disc 1. The operation definition 127 is definition information about an operation performed by the apparatus when the video information processing apparatus cannot understand the identification information 126. The address information 128 is information defining an area of the user data area 122 to be recorded. The reserve area 129 is a spare area for recording information that will be defined in the future.

  Here, the identification information 126 and the operation definition 127 are operation management information for managing and controlling the recording operation by the video information processing apparatus for the user data area 122.

  That is, as shown in FIG. 1D, the identification information 126 describes recording operation identification information 130 that is an identification code for a recording operation by the video information processing apparatus. In the operation definition 127, when the video information processing apparatus cannot recognize (understand) the recording operation identification information 130 of the mounted optical disc 1 (for example, when it cannot be recognized due to a difference in version, etc.), it is stored in the user data area 122. Recording operation prohibition information (bit) 131 that defines whether or not data (information) recording operation is prohibited is assigned.

  Therefore, it is assumed that the video information processing apparatus cannot recognize (understand) the recording operation identification information 130 of the mounted optical disc 1 and the recording operation prohibition information 131 is “1”, for example. In this case, the video information processing apparatus does not perform data (information) recording operation in the user data area 122.

  On the other hand, even when the recording operation identification information 130 of the optical disc 1 loaded with the video information processing apparatus cannot be recognized (understood), a case is assumed in which the recording operation prohibition information 131 is “0”, for example. In this case, the video information processing apparatus performs a data (information) recording operation in the user data area 122.

  When the video information processing apparatus can recognize (understand) the recording operation identification information 130, the video information processing apparatus does not read the recording operation prohibition information 131, but performs the recording operation according to the recording operation identification information 130. carry out.

  In the above description, the operation management information 125 is recorded in the lead-in area 121. However, the operation management information 125 may be recorded in the BCA area 120 or the lead-out area 123.

(Description of video information processing device)
FIG. 2 is a block diagram showing an internal configuration of the video information processing apparatus 100 according to the present embodiment.

  As shown in FIG. 2, the video information processing apparatus 100 includes at least a data dividing unit 19, a recording medium attaching / detaching unit (not shown, and FIG. 2 shows a state where the optical disk 1 as a recording medium is mounted), A recording unit (hereinafter referred to as a magnetic disk) 3, a system controller unit 18, a medium identification information / related address holding unit (hereinafter simply referred to as a holding unit) 24, motor drivers 14 and 15, and a data synthesis unit 20 are provided. Yes.

  Hereinafter, each component block will be described through the operation of the video information processing apparatus 100.

  First, the recording operation of the video information processing apparatus 100 will be described.

  A video signal output from a tuner or the like built in a display unit 22 such as a television is input to a video / audio encoding / decoding unit 21 and video and audio are encoded.

  Next, the data encoded by the video / audio encoding / decoding unit 21 is divided by the data dividing unit 19. That is, the series of video signals is divided into the first information and the second information in the data dividing unit 19.

  Here, the first information is recorded on the optical disc 1 which is a recording medium. On the other hand, the second information is recorded on the magnetic disk 3 which is a built-in recording unit. The first information is, for example, standard-definition video data having a lower image quality (lower image quality) than a series of video signals having high image quality. Here, the first information is adjusted so as to have a data amount enough to fit in the capacity of one optical disc 1. In this case, the second information is difference data between a series of video signals having high image quality and video data having standard image quality. That is, a high-definition image can be reproduced by combining the standard image quality data and the difference data.

  While the data dividing process is performed, the system controller 18 confirms whether or not the optical disk 1 is mounted on a recording medium mounting unit in which the recording medium can be freely attached and detached.

  When the system controller unit 18 confirms that the optical disk 1 is loaded, the system controller unit 18 instructs the servo processor 13 to access the area where the operation management information 125 of the optical disk 1 is recorded. In response, a control signal is output.

  Next, the servo processor 13 that has received the control signal controls the motor driver 15 in accordance with the control signal. Thereby, the drive of the optical pickup (PU) 2 is controlled by the motor driver 15 so that information on the desired area (operation management information 125) is read out.

  Next, the operation management information 125 read by the optical pickup 2 is amplified by the optical disc signal processing unit 5. The signal output from the optical disc signal processing unit 5 is supplied to the binarization unit 6.

  The binarization unit 6 binarizes the input signal, and the binarized binarized signal is supplied to the encoding / decoding unit 7 as a modulation signal. When the modulated binarized signal is input, the encode / decode unit 7 decodes the binarized signal. Then, the operation management information extraction unit 25 extracts the operation management information 125 from the decoded signal. Here, the encoding / decoding unit 7 includes a functional part as a decoder at the time of reproduction and a functional part as an encoder at the time of recording.

  The extracted operation management information 125 is output to the system controller 18. The system controller 18 determines whether or not the first information is recorded on the optical disc 1 in accordance with the recording operation prohibition information 131. More specifically, when the system controller unit 18 can recognize the recording operation identification information 130, the system controller unit 18 records the first information on the optical disc 1 in accordance with the recording operation identification information 130. On the other hand, when the system controller unit 18 recording operation identification information 130 cannot be recognized, the system controller unit 18 determines whether or not the first information recording operation is performed on the optical disc 1 in accordance with the recording operation prohibition information 131.

  In the configuration of FIG. 2, the operation management information 125 is analyzed by the operation management information analysis unit 26 disposed in the system controller unit 18. Specifically, the operation management information analysis unit 26 first detects recording operation identification information 130 that is identification information 126 related to the operation management information 125. When the recording operation identification information 130 detected by the operation management information analysis unit 26 can be understood, the recording operation according to the recording operation identification information is managed and controlled in the video information processing apparatus 100. For example, the first information is recorded on the optical disc 1 according to the address range defined in the address information 128 under the control of the system controller unit 18. On the other hand, when the operation management information analysis unit 26 cannot understand the recording operation identification information 130, the first control for the optical disc 1 is performed according to the recording operation prohibition information 131 that is the operation definition 127 under the control of the system controller unit 18. It is determined whether or not to perform an information recording operation.

  When the recording operation identification information 130 can be understood based on the analysis result of the operation management information analysis unit 26, and when the recording operation identification information 130 cannot be understood and the recording operation prohibition information 131 is “0”. The subsequent processing is as follows.

  In this case, the first information (for example, standard-definition video data) divided by the data dividing unit 19 is encoded by the encoding / decoding unit 7. Thereafter, the optical pickup unit 2 is driven through the servo processor 13 and the motor driver 15 under the control of the system controller unit 18. Then, the first information is recorded on the optical disc 1 via the optical pickup unit 2. On the other hand, the second information (for example, difference data) divided by the data dividing unit 19 is encoded by the encoding / decoding unit 17. Thereafter, the second information is recorded on the magnetic disk 3 via the magnetic head 9.

  On the other hand, if the recording operation identification information 130 cannot be understood based on the analysis result of the operation management information analysis unit 26 and the recording operation prohibition information 131 is “1”, the system controller unit 18 The recording operation of the first information is prohibited. More specifically, recording operations to the lead-in area 121, the user data area 122, and the lead-out area 123 are completely prohibited.

  When the first and second information is recorded on the optical disk 1 and the magnetic disk 3, the address where the first information of the optical disk 1 is recorded and the address where the second information of the magnetic disk 3 is recorded. Is associated with the medium identification information 124 of the optical disc 1 to be recorded, and is held and recorded in the holding unit 24 in the system controller 18 under the control of the system controller 18. A method (operation) for extracting the medium identification information 124 from the optical disc 1 will be described in detail in the second embodiment.

  As described above, the video information processing apparatus 1 according to the present embodiment divides a series of high-definition video information (video data) into the optical disk 1 mounted on the apparatus and the magnetic disk 3 in its own apparatus. I remember it.

  Therefore, the capacity of the magnetic disk 3 can be saved as compared with the case of recording the series of video information of only the magnetic disk 3.

  Further, if the first information stored on the optical disk 1 and the second information recorded on the magnetic disk 3 are combined during the reproduction process, a high-definition image can be reproduced. That is, it is possible to save the capacity of the magnetic disk 3 while preventing deterioration in the quality of the reproduced image.

  In the video information processing apparatus 100 according to the present embodiment, the system controller unit 18 determines whether or not the first information recording operation is performed on the optical disc 1 according to the recording operation prohibition information 131 recorded on the optical disc 1. ing.

  Therefore, on the optical disc 1 side, the recording operation of the divided first information by the video information processing apparatus 100 can be managed and controlled.

  Also, in the video information processing apparatus 100 according to the present embodiment, when the system controller unit 18 can recognize the recording operation identification information recorded on the optical disc 1, the first information on the optical disc 1 is recorded according to the recording operation identification information. Recording is controlled. On the other hand, when the system controller unit 18 cannot recognize the recording operation identification information, the presence / absence of the recording operation of the first information on the optical disc 1 is determined according to the recording operation prohibition information.

  Therefore, when the recording operation identification information 130 can be recognized, the video information processing apparatus 100 can perform the recording operation specified by the recording operation identification information 130. On the other hand, even when the recording operation identification information 130 cannot be recognized due to a version upgrade or the like, the recording of the first information on the optical disc 1 can be prohibited by reading the recording operation prohibition information 131.

  In the present embodiment, the first information recorded on the optical disk 1 is data having a lower image quality than the series of video information, and the second information recorded on the magnetic disk 3 is a series of video information and It is difference data with said 1st information.

  Therefore, it is only necessary to record only difference data having a smaller data amount on the magnetic disk 3 instead of a series of high-definition video information itself. Therefore, it is possible to further save the storage capacity of the magnetic disk 3 without degrading the image quality of the reproduced video.

  Further, as described above, a series of video information is converted by the data dividing unit 19 into video data (first information) in which the data amount is adjusted so as to fit in the capacity of one optical disk 1 and the video data is refined. This is divided into differential data that can be reproduced. In other words, the reproducible video data itself is recorded on the optical disc 1 although the image quality is deteriorated. Therefore, the re-encoding performed during the dubbing process from the magnetic disk 3 to the optical disk 1 as well as the diving itself to the optical disk 1 can be made unnecessary.

  Further, the video information processing apparatus 100 according to the present embodiment includes a holding unit (medium identification information / related address holding unit) 24. The holding unit 24 associates the first address where the first information is recorded and the second address where the second information is recorded with the medium identification information 124 of the optical disc itself recorded on the optical disc 1. Holding (recording).

  Therefore, when the divided first information and second information are combined in the video information processing apparatus 100, inconsistency can be prevented.

  In addition, with respect to the optical disc 1 in which the first information divided and recorded in one video information processing apparatus 100 is stored, recording in another video information processing apparatus other than the video information processing apparatus 100 at the position is performed. May be prohibited. Thereby, the medium identification information 124 held in the holding unit 24 and the first and second information recorded in the first and second addresses associated with the medium identification information 124 are inconsistent. Can be prevented from occurring.

<Embodiment 2>
In the present embodiment, an operation of reproducing a series of video information in the video information processing apparatus 100 described in the first embodiment will be described. Hereinafter, the reproduction operation will be described in detail with reference to FIGS.

  The system controller 18 confirms whether or not the optical disk 1 is mounted on a recording medium mounting portion (not shown in FIG. 2) where the recording medium can be freely attached and detached. When the system controller unit 18 confirms that the optical disk 1 is loaded, the system controller unit 18 instructs the servo processor 13 to access the area where the medium identification information 124 of the optical disk 1 is recorded. In response, a control signal is output.

  Next, the servo processor 13 that has received the control signal controls the motor driver 15 in accordance with the control signal. Thereby, the driving of the optical pickup (PU) 2 is controlled by the motor driver 15 so that information on the desired area (medium identification information 124) is read.

  Next, the medium identification information 124 read by the optical pickup 2 is amplified by the optical disc signal processing unit 5. The signal output from the optical disc signal processing unit 5 is supplied to the binarization unit 6.

  The binarization unit 6 binarizes the input signal, and the binarized binarized signal is supplied to the encoding / decoding unit 7 as a modulation signal. When the modulated binarized signal is input, the encode / decode unit 7 decodes the binarized signal. Then, the medium identification information extraction unit 23 extracts the medium identification information 124 from the decoded signal.

  The extracted medium identification information 124 is output to the system controller 18. Here, as described in the first embodiment, the holding unit 24 holds the first address and the second address in association with the predetermined medium identification information 124. Therefore, when medium identification information (hereinafter, the extracted medium identification information is referred to as extracted medium identification information) 124 is input, the system controller 18 reads the medium identification information (hereinafter referred to as the holding unit) held in the holding unit 24. 24) and the extraction medium identification information 124 are collated.

  As a result of the collation, when the holding medium identification information 124 and the extraction medium identification information 124 match, the first address of the optical disc 1 associated with the extraction medium identification information (or holding medium identification information) 124 and The system controller unit 18 controls the servo processor 13 and the servo processor 12 so as to access the second address of the magnetic disk 3.

  The optical pickup 2 is moved to the first address position by a control signal from the servo processor 13. Then, the optical pickup 2 reads the first information recorded on the optical disc 1 from the first address. The read signal is amplified in the optical disc signal processing unit 5. The reproduction signal output from the optical disc signal processing unit 5 is supplied to the binarization unit 6 and also generates a tracking error signal, a focus error signal, and the like that can be used for servo control, and also to the servo processor 13. Supplied.

  The servo processor 13 generates a focus drive signal and a tracking drive signal in accordance with the tracking error signal and the focus error signal supplied from the optical disc signal processing unit 5, and supplies the generated signals to the motor driver 15. The motor driver 15 drives the focus coil and tracking coil in the optical pickup 2 to control focus and tracking.

  The optical disc 1 is controlled to rotate at a constant speed or a constant angular speed by driving the spindle motor 4 in accordance with a control signal from the motor driver 15.

  The binarized signal from the optical disc 1 that has been stably read in this way is supplied to the encode / decode unit 7 as a modulation signal. The encoding / decoding unit 7 includes a functional part as a decoder during reproduction and a functional part as an encoder during recording. At the time of reproduction, the signal is demodulated and subjected to signal processing such as error correction and deinterleaving through the buffer memory 8 to decode the modulated signal. The decoded signal is recorded in the buffer memory 8.

  While reading the first information, the second information is also read as follows.

  The magnetic head 9 is moved to the second address position by a control signal from the servo processor 12. Then, the magnetic head 9 reads the second information recorded on the magnetic disk 3 from the second address. The read signal is amplified in the magnetic disk signal processing unit 10. The reproduction signal output from the magnetic disk signal processing unit 10 is supplied to the binarization unit 11, and a signal such as an error signal that can be used for servo control is generated and supplied to the servo processor 12. .

  The servo processor 12 supplies a control signal for controlling the magnetic head 9 and the spindle motor 16 to the motor driver 14 in accordance with the error signal supplied from the magnetic disk signal processing unit 10. The motor driver 14 drives a coil in the magnetic head 9 to control the magnetic head 9.

  The magnetic disk 3 is controlled to rotate at a constant speed or a constant angular speed by driving the spindle motor 16 in accordance with a control signal from the motor driver 14.

  The binarized signal from the magnetic disk 3 read stably in this way is supplied to the encode / decode unit 17 as a modulation signal. The encoding / decoding unit 17 includes a functional part as a decoder during reproduction and a functional part as an encoder during recording. At the time of reproduction, the signal is demodulated and the same signal processing as that of the optical disc 1 is performed via the buffer memory 8 to decode the modulated signal. The decoded signal is recorded in the buffer memory 8.

  Note that the data read and decoded from the optical disk 1 and the data read and decoded from the magnetic disk 3 are recorded in the buffer memory 8 in a synchronized state by the processing so far. .

  Next, the data recorded in the buffer memory 8 are combined by the data combining unit 20. The synthesized data (which can be grasped as the series of video information) is decoded by the video / audio encoding / decoding unit 21 and displayed on the display unit 22 such as a television. That is, the first information and the second information are synthesized, and a series of high-definition video information generated by the synthesis is reproduced on the display unit 22.

  Here, as described above, video data (first information) with standard image quality is recorded on the optical disc 1, and differential data (second data) that can reproduce the video data on the magnetic disc 3 with high definition. Information) is recorded, the information is synthesized by the data synthesizing unit 20, whereby a series of video information with high definition image quality can be generated.

  As described above, in the video information processing apparatus 100 according to the present embodiment, the system controller unit 18 determines whether or not the extraction medium identification information matches the holding medium identification information. When it is determined that they match, the first address and the second address associated with the holding medium identification information are accessed. Then, the first information read from the first address and the second information read from the second address are combined so as to be reproducible in the data combining unit 20.

  Accordingly, the first information and the second information divided in the first embodiment and stored in the optical disk 1 and the magnetic disk 3 can be normally reproduced as a series of high-definition video information.

It is a figure which shows the recording area format of an optical disk. It is a figure which shows the structure of the video information processing apparatus which concerns on this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Optical disk, 3 Magnetic disk, 18 System controller, 19 Data division part, 20 Data composition part, 24 Medium identification information / related address holding part, 26 Operation management information analysis part, 100 Image | video information processing apparatus, 124 Medium identification information, 125 Operation management information, 130 recording operation identification information, 131 recording operation prohibition information.

Claims (5)

A data dividing unit for dividing a series of video information into first information and second information;
A recording medium attachment / detachment unit capable of attaching / detaching a recording medium on which the first information is recorded;
A storage unit for the second information is recorded, comprises,
The recording medium includes
Recording operation prohibition information is recorded,
A controller unit for determining whether to perform the recording operation of the first information on the recording medium according to the recording operation prohibition information;
A video information processing apparatus. The recording medium includes
Recording operation identification information that defines the recording operation to the recording medium is stored,
When the controller unit can recognize the recording operation identification information, the controller unit,
According to the recording operation identification information, recording the first information on the recording medium,
When the controller unit cannot recognize the recording operation identification information, the controller unit
Determining whether to perform the recording operation of the first information on the recording medium according to the recording operation prohibition information;
The video information processing apparatus according to claim 1. The first information is:
  Data having lower image quality than the series of video information,
  The second information is:
  Difference data between the series of video information and the first information.
The video information processing apparatus according to claim 1, wherein the video information processing apparatus is a video information processing apparatus. The recording medium includes
  Your identification information is recorded,
  A holding unit that holds the first address in which the first information is recorded and the second address in which the second information is recorded in association with the identification information;
The video information processing apparatus according to claim 1, wherein the video information processing apparatus is a video information processing apparatus. The controller unit is
  Determining whether the identification information of the recording medium attached to the recording medium attaching / detaching unit matches the identification information held in the holding unit;
  When it is determined that the controller units match, the first information and the second information are read from the first address and the second address associated with the matching identification information. A data reading unit;
  A data combining unit that reproducibly combines the first information read from the first address and the second information read from the second address; ,
The video information processing apparatus according to claim 4.

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