JP2011154748A - Image quality automatic adjustment method and image quality automatic adjustment disk - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reflect image quality adjustment that a user performs to a content stored in a recording medium even upon reproduction by the other reproduction device; and to reflect the image quality adjustment by a reproduction device even if it is not a specified reproduction device or the like. <P>SOLUTION: An optical disk 20 has both a ROM region and an RE region, and video content data, an application program for performing image quality adjustment and initial setting data of the image quality adjustment are stored in the ROM region and user setting data for the image quality adjustment can be stored in the RE region. When the optical disk 20 is inserted in a recording and reproduction device 10, the application program is read from the ROM region and written in a memory 13 for a job. After that, on the basis of the application program, the image quality adjustment of a display device 30 is performed by reading the user setting data when the user setting data are stored in the RE region and the image quality adjustment is performed by reading the initial setting data from the ROM region when the user setting data are not stored. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an automatic image quality adjustment disc and an automatic image quality adjustment method that include a plurality of information recording layers having different recording characteristics and that can adjust the image quality of recorded video content during reproduction.

  When video content in BD (Blu-ray Disc) media is played back using a playback device such as a player, image quality adjustment is generally performed on the playback device side. There are various genres and image characteristics of video content, and in order to view with optimum image quality, it is necessary to perform an image quality adjustment operation on the playback device side every time the video content is changed.

  In contrast, Patent Documents 1 and 2 devise the following techniques. That is, for a certain content stored in the recording medium, the image quality adjustment state is written in the memory as image quality adjustment data, and this data is read out during content reproduction to adjust the image quality of the reproduction apparatus. Patent Document 1 describes that the image quality adjustment data is recorded in a memory of a recording / reproducing apparatus, and Patent Document 2 describes that the image quality adjustment data is recorded in a rewritable area of a recording medium in which content is stored. The image quality adjustment data is stored in two ways. One is a method of associating with identification data of each content, and the other is a method of associating with video characteristic information.

  As a result, after the user has adjusted the image quality once, it is possible to view the same content as well as the video content with the same authoring, genre, and video characteristics with the optimum image quality without performing the image quality adjustment operation again. .

JP 2001-333350 A (published on November 30, 2001) JP 10-40654 A (published February 13, 1998)

  However, the prior art as described above has the following problems. First, in the method of recording the image quality adjustment data in the memory of the recording / playback device as in Patent Document 1, if the device for playing back content is changed, the previous image quality adjustment is not reflected, and the user adjusts the image quality again. It is required to do. Furthermore, since the memory of the apparatus has a capacity limit, it is not possible to hold image quality adjustment data on a one-to-one basis for all contents.

  On the other hand, in Patent Document 2, since the image quality adjustment data is recorded in a rewritable area of the recording medium, the image quality adjustment data is read from the recording medium and the image quality adjustment is executed even when the apparatus is changed. . That is, the user is not required to perform image quality adjustment again. However, in Patent Document 2, since an application program for reading and setting image quality adjustment data from a recording medium is installed on the apparatus side, the above effect is required unless the apparatus is installed with the application program (probably an apparatus of the same manufacturer). Cannot be obtained. In addition, since data varies depending on a connected device such as a television, the number of connected devices is limited.

  The present invention has been made in view of the above problems, and image quality adjustments once made by a user for content stored in a recording medium can be reflected when the content is reproduced by another reproduction device. It is an object of the present invention to enable reflection without using a specific playback device or the like.

  In order to solve the above-described problems, an image quality automatic adjustment method according to the present invention is used to perform image quality adjustment of a displayed video when playing back video content stored in an optical recording medium by a recording / playback device and a display device. An image quality automatic adjustment method, wherein the optical recording medium has both a reproduction-only area and a recordable area, and the reproduction-only area has video content data, an application program for adjusting image quality, and an image quality Initial setting data for adjustment is stored, user setting data for image quality adjustment set by the user in the display device can be stored in the recordable area, and the optical recording medium is inserted into the recording / reproducing device. And the recording / reproducing apparatus reads the application program from the reproduction-only area of the optical recording medium, and the recording / reproducing apparatus has a built-in operation. A first step for writing to the memory, a second step for reading the user setting data and adjusting the image quality of the display device when the user setting data is stored in the recordable area, and the recordable state. When the user setting data is not stored in the area, the initial setting data is read from the reproduction-only area and the image quality adjustment of the display device is performed, and the second and third processes include The process is executed based on the application program read in the first step.

  According to the above configuration, user setting data for image quality adjustment can be stored in the recordable area of the optical recording medium. Therefore, when the user performs image quality adjustment on the content of the optical recording medium, the content is reproduced. Each time is performed, the image quality adjustment result is reflected. If the user setting data is not stored, the image quality can be adjusted by the recommended setting of the content manufacturer or the like by the initial setting data.

  Furthermore, since the application program for adjusting the image quality of the display device based on the image quality setting information is also stored in the read-only area of the optical recording medium, the above-described effects can be obtained without using a specific recording / playback device. Obtainable.

  In the automatic image quality adjustment method, a plurality of the initial setting data stored in the reproduction-only area is stored corresponding to the device type of the display device, and is stored in the recordable area. The user setting data is stored in correspondence with the device type of the display device when image quality adjustment is performed. In the second step, the device type of the connected display device is stored in the user setting data. If it matches the corresponding device type stored, the user setting data is used to adjust the image quality of the display device. If it does not match, the user setting data is stored in the reproduction-only area. Of the initial setting data, the initial setting data corresponding to the device type of the display device when image quality adjustment is performed and the initial setting data corresponding to the device type of the connected display device are used. The image quality of the display device is adjusted using the converted user setting data. In the third step, the image quality of the display device is set using the initial setting data corresponding to the device type of the connected display device. It can be set as the structure which adjusts.

  According to the above configuration, since the image quality adjustment amount can be converted according to the device type of the display device, almost the same image quality can be obtained regardless of the device type of the display device that reproduces the content.

  In the automatic image quality adjustment method, as a step executed based on the application program, when the user performs image quality adjustment on the display device during reproduction of the video content data, the image quality adjustment result Is transmitted from the display device to the recording / reproducing device, and is written in the recordable area as the user setting data.

  An image quality automatic adjustment method of the present invention is an image quality automatic adjustment method for adjusting the image quality of a displayed video when playing back video content stored in an optical recording medium by a recording / playback device and a display device, The optical recording medium has both a read-only area and a recordable area. The read-only area stores video content data, an application program for adjusting image quality, and initial setting data for image quality adjustment. In the recordable area, user setting data for image quality adjustment set by the user in the display device can be stored. When the optical recording medium is inserted into the recording / reproducing device, the recording / reproducing device A first step of reading the application program from the read-only area of the recording medium and writing it into a working memory built in the recording / playback apparatus When the user setting data is stored in the recordable area, the user setting data is read to adjust the image quality of the display device, and the user setting data is stored in the recordable area. If not, the initial setting data is read from the read-only area and the image quality of the display device is adjusted, and the second and third steps are read in the first step. The configuration is executed based on the application program.

  Therefore, when the user performs image quality adjustment on the content of the optical recording medium, the image quality adjustment result is reflected every time the content is reproduced. If the user setting data is not stored, the image quality can be adjusted by the recommended setting of the content manufacturer or the like by the initial setting data.

  Furthermore, since the application program for adjusting the image quality of the display device based on the image quality setting information is also stored in the read-only area of the optical recording medium, the above-described effects can be obtained without using a specific recording / playback device. There is an effect that it can be obtained.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1, showing an embodiment of the present invention, is a block diagram showing a main configuration of a recording / reproducing apparatus. It is a figure which shows the structure of the optical disk reproduced | regenerated with the said recording / reproducing apparatus. It is a flowchart which shows the image quality adjustment process of the said recording / reproducing apparatus. 2 shows an image quality conversion table stored on the optical disc, wherein (a) is a standard setting image setting information table, and (b) and (c) are image setting information tables set corresponding to the device type. .

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. First, FIG. 1 shows a main configuration of a recording / reproducing apparatus and a display apparatus to which the image quality automatic adjustment method according to the present embodiment is applied.

  A recording / reproducing apparatus 10 shown in FIG. 1 includes a control unit 11, a disk driver unit 12, an HDMI (High-Definition Multimedia Interface) 13, a work memory 14, and a nonvolatile memory 15. Further, the recording / reproducing apparatus 10 in FIG. 1 is, for example, a BD (Blu-ray Disc: registered trademark) player that reproduces video data, and illustrates a configuration used by being connected to a display device 30 such as a liquid crystal television. is doing. 1 shows a configuration in which the recording / reproducing apparatus 10 and the display device 30 are connected, but the recording / reproducing apparatus 10 may have a built-in display unit.

  The control unit 11 includes a CPU (Central Processing Unit), is a means for controlling the entire recording / reproducing apparatus 10, and performs information processing and the like to be described later. The disk driver unit 12 reads and writes data from and to an optical disk (optical recording medium, image quality automatic adjustment disk) 20 inserted into a disk insertion slot (not shown). The HDMI 13 is an interface for performing data transmission between the recording / reproducing device 10 and the display device 30. In HDMI 13, TMDS (Transition Minimized Differential Signaling) is used as a video / audio signal transmission method, and CEC (Consumer Electronics Control) / DDC (The Display Data Channel) is used for transmission of control signals.

  The working memory 14 is a memory used when the control unit 11 performs processing, and a DRAM or the like is used. The non-volatile memory 15 is a memory for storing a control program or the like in the control unit 11, and a FLASH memory or the like is used.

  Further, the display device 30 has an image quality adjustment function (EDID: Extended Display Identification Data) for adjusting the image quality of the displayed video, and the adjustment data can be transmitted to the recording / reproducing device 10 via the HDMI 13. It is like that.

  In the present embodiment, the optical disk 20 is used as a recording medium for storing video data. As shown in FIG. 2, the optical disc 20 has a reproduction-only area (hereinafter also referred to as “ROM (Read Only Memory) area”) and a recordable area (hereinafter referred to as “RE (RE-writable) area” for explanation). A hybrid disc. The recording medium system applied to the optical disc 20 is not particularly limited, and may be, for example, a BD system or a DVD (Digital Versatile Disc) system.

  In the optical disc 20, video content data to be played back is recorded in the ROM area. Also, image quality setting information can be stored in the RE area of the optical disc 20 so that the user can view the content with the desired image quality. Further, an application program for adjusting the image quality of the display device 30 based on the image quality setting information stored on the optical disc 20 is stored in the ROM area of the optical disc 20.

  When the user performs image quality adjustment on the display device 30 during playback of content, the image quality setting information (user setting data for image quality adjustment) is transmitted to the recording / playback device 10 via the HDMI 13. The recording / reproducing apparatus 10 writes the received image quality setting information in the RE area of the optical disc 20. Further, the image quality setting information (initial setting data for image quality adjustment) that is the initial setting may be stored in advance in the ROM area of the optical disc 20, and the image quality setting information that is the initial setting corresponds to the device manufacturer of the display device. Multiple may be prepared. This initial setting data is a recommended setting by the content manufacturer or a recommended setting by the disc manufacturer when content is contained in the ROM area. Since the image quality setting information as the initial setting is described in the ROM area, it can be held without being overwritten / erased by the user.

  In the recording / reproducing apparatus 10, if the image quality setting information is recorded on the optical disc 20 when reproducing the video data recorded on the optical disc 20, the image quality adjustment processing in the display device 30 is performed based on the image quality setting information. This image quality adjustment process will be described with reference to the flowchart of FIG.

  When the optical disc 20 is inserted into the disc driver unit 12 of the recording / reproducing apparatus 10 (S1), the control unit 11 reads the application program from the ROM area of the optical disc 20 through the disc driver unit 12 and writes it into the work memory 14 ( S2: First step). The subsequent processing is executed based on this application program.

  First, image quality setting information is read from the RE area (S3). When the image quality setting information is read from the RE area, it is confirmed whether or not there is information that matches the display device 30 connected to the recording / reproducing device 10 and the device (S4). That is, the image quality setting information is set corresponding to the type of device (for example, manufacturer) of the display device 30. This is because the image quality in the display device 30 has different characteristics depending on the device, and the image quality adjustment amount for obtaining the same image quality differs depending on the device. Further, in order to perform the above confirmation, the recording / reproducing apparatus 10 needs to be able to recognize the device type of the connected display device 30, but this recognition is possible by HDMI connection. That is, when the recording / reproducing device 10 and the display device 30 are HDMI-connected, the device information (EDID) of the display device is read and transmitted to the recording / reproducing device 10. Stored in the memory 14.

  If there is information that matches the connected device in S4, the controller 11 reads the image quality setting information from the RE area and stores it in the work memory 14 (S5: second step). If there is no information matching the connected device in S4, the image quality setting information is read from the ROM area (S6). Then, it is confirmed whether or not there is information that matches the display device 30 connected to the recording / reproducing device 10 and the device (S7). In S7, if there is information that matches the connected device, the control unit 11 reads the image quality setting information from the ROM area and stores it in the work memory 14 (S5: third step). If there is no information matching the connected device in S7, the standard image quality setting information is stored in the work memory 14 (S8). Note that the standard image quality setting information here is not set in correspondence with the type of device (for example, manufacturer) of the display device 30, but has average image quality adjustment parameters. In this embodiment, it is assumed that such standard image quality setting information is also stored in the ROM area.

  When the image quality setting information is stored in the work memory 14 in S5 or S8, the control unit 11 performs image quality setting on the display device 30 through the control signal (HDMI CEC / DDC) based on the image quality setting information ( S9: Second and third steps).

  When the user performs image quality adjustment on the display device 30 during the reproduction of content, the image quality adjustment result is transmitted from the display device 30 to the recording / playback device 10 at a predetermined timing and written in the RE area (fourth). Process).

  As described above, in the recording / reproducing apparatus 10 according to the present embodiment, the image quality setting information for the image quality adjustment performed by the user is stored in the RE area of the optical disc 20. Therefore, when the user performs image quality adjustment on the content of the optical disc 20, the image quality adjustment result is reflected every time the content is reproduced. Also, even if playback is performed by a recording / playback apparatus 10 different from that used when image quality adjustment is performed, the image quality setting information is read from the optical disc 20, so that the user can save time for readjustment. Furthermore, since the application program for adjusting the image quality of the display device 30 based on the image quality setting information is also stored in the ROM area of the optical disc 20, the above effect can be obtained even if it is not a specific recording / playback device 10. be able to. That is, the application program can be read and reproduced even if it is not a reproduction apparatus corresponding to the content stored in the optical disc 20 or a reproduction apparatus corresponding to the image quality setting data.

  Furthermore, in the recording / reproducing apparatus 10 according to the present embodiment, the image quality can be set in correspondence with the device of the connected display device. In order to make this possible, the optical disc 20 is configured to have an image quality conversion table in the ROM area. Hereinafter, the configuration and functions of the conversion table will be described with reference to FIG. However, the image quality conversion table shown in FIG. 4 is merely an example of the configuration, and the present invention is not limited to this.

  FIG. 4A is an image setting information table of standard settings (recommended settings by the content manufacturer or disc manufacturer), and the reproduction parameters that can be adjusted in the display device 30 and the adjustment amounts in the respective parameters are described in correspondence with each other. Has been. 4B and 4C are image setting information tables set corresponding to the device type. In this example, the difference in adjustment amount is described in a parameter different from the standard setting. In this example, the image quality conversion table is provided as a set of a standard image setting information table and an image setting information table set corresponding to the device type. The number of image setting information tables set corresponding to the device type is not particularly limited.

  For example, when the display device 30 connected to the recording / reproducing apparatus 10 is the device A, and the standard image quality of the device A is slightly bright and the color is slightly light, it corresponds to the device A. In the image setting information to be performed, image quality adjustment should be performed so as to suppress the brightness and increase the color density. Therefore, in the image setting information table of FIG. 4B, the brightness adjustment amount is set to (−1), and the color density adjustment amount is set to (+2). When the image quality adjustment of the display device 30 that is the device A is actually performed, the brightness is adjusted by adding the adjustment amount (−1) corresponding to the device A to the adjustment amount (+3) in the standard setting (+2 ) Is used to adjust the image quality. Similarly, with regard to the color density, the image quality adjustment is performed with the adjustment amount (+2) by adding the adjustment amount (+2) corresponding to the device A to the adjustment amount (0) in the standard setting. For the parameters for which no adjustment amount is set in the image setting information table of the device A, the standard adjustment amount is used. By providing the optical disc 20 with the image quality conversion table as described above, almost the same image quality can be obtained regardless of the device type of the display device that reproduces the content.

  In addition, when the user adjusts the image quality on the display device 30 so as to be his / her preference during the reproduction of the content, the adjustment amount of the adjusted parameter is written in the RE area together with the device type information of the display device 30. Thus, for example, when the user adjusts the image quality during content playback on the device A and the image setting information is stored in the RE area, the content is stored in the RE region every time content is subsequently played back on the device A. Reflected image setting information.

  Further, when the user performs image quality adjustment during content reproduction on the device A and the image setting information is stored in the RE area, when the content is reproduced on the device B, the device B is used using the image quality conversion table. However, the image quality adjustment result can be reflected.

  For example, assume that the user changes the brightness parameter from the adjustment amount (+2) to (+3) during content playback on the device A, and this setting information is stored in the RE area. When the content is played back on the device B, the recording / playback apparatus 10 reads the adjustment amount (+3) as image quality setting information in the user setting from the RE area of the optical disc 10. However, since this is the adjustment amount for the device A, when reproduction is performed by the device B, the brightness adjustment amount in the image setting information table (that is, FIG. 4B) corresponding to the device A is subtracted. Then, the brightness adjustment amount in the image setting information table (that is, FIG. 4C) corresponding to the device B is added. Accordingly, the brightness adjustment amount in this case is (+3) − (− 1) + (0) = (+ 4), and the brightness adjustment amount at the time of reproduction by the device B is (+4).

  When the user performs image quality adjustment, the timing for writing the image quality setting information to the optical disc 20 is not particularly limited, but the timing when the user's favorite image quality is likely to be determined is the playback stop or end time. It is preferable. For example, in the case of writing at the end of video playback, the recording / playback apparatus 10 obtains the image setting information at that time via the control signal (CEC / DDC) at the end of video playback. This image setting information is once written in the working memory 14 and it is confirmed whether there is a difference from the setting before reproduction. If there is a difference, the image setting information is stored in the RE area of the optical disc 20.

  The image quality adjusted by the image quality setting information can be set for each content. Also, this setting can be erased and overwritten for writing to the RE area.

[Supplement]
Finally, each block of the recording / reproducing apparatus 10, in particular, the control unit 11 may be configured by hardware logic, or may be realized by software using a CPU as follows.

  That is, the recording / reproducing apparatus 10 includes a CPU (central processing unit) that executes instructions of a control program that realizes each function, a ROM (read only memory) that stores the program, and a RAM (random access memory) that expands the program. And a storage device (recording medium) such as a memory for storing the program and various data. An object of the present invention is a recording medium on which a program code (execution format program, intermediate code program, source program) of a control program of the recording / reproducing apparatus 10 which is software for realizing the above-described functions is recorded so as to be readable by a computer. This can also be achieved by supplying the program to the recording / reproducing apparatus 10 and reading and executing the program code recorded on the recording medium by the computer (or CPU or MPU).

  Examples of the recording medium include a tape system such as a magnetic tape and a cassette tape, a magnetic disk such as a floppy (registered trademark) disk / hard disk, and a compact disk-ROM / MO / MD / digital video disk / compact disk-R. A disk system including an optical disk, a card system such as an IC card (including a memory card) / optical card, or a semiconductor memory system such as a mask ROM / EPROM / EEPROM / flash ROM can be used.

  The recording / reproducing apparatus 10 may be configured to be connectable to a communication network, and the program code may be supplied via the communication network. The communication network is not particularly limited. For example, the Internet, intranet, extranet, LAN, ISDN, VAN, CATV communication network, virtual private network, telephone line network, mobile communication network, satellite communication. A net or the like is available. Further, the transmission medium constituting the communication network is not particularly limited. For example, even in the case of wired such as IEEE 1394, USB, power line carrier, cable TV line, telephone line, ADSL line, etc., infrared rays such as IrDA and remote control, Bluetooth ( (Registered trademark), 802.11 wireless, HDR, mobile phone network, satellite line, terrestrial digital network, and the like can also be used. The present invention can also be realized in the form of a computer data signal embedded in a carrier wave in which the program code is embodied by electronic transmission.

  The present invention is not limited to the above-described embodiments, and various modifications can be made within the scope shown in the claims. That is, embodiments obtained by combining technical means appropriately modified within the scope of the claims are also included in the technical scope of the present invention.

  INDUSTRIAL APPLICABILITY The present invention can be adjusted with an adjusted image quality when playing back a BD or the like in which video content is stored, and can be used for a BD player or the like.

DESCRIPTION OF SYMBOLS 10 Recording / reproducing apparatus 11 Control part 12 Disk drive part 13 HDMI
14 Working memory 15 Non-volatile memory 20 Optical disc (optical recording medium, image quality automatic adjustment disc)
30 Display device

Claims (4)

An image quality automatic adjustment method for adjusting image quality of a displayed video when playing back video content stored in an optical recording medium by a recording / playback device and a display device,
The optical recording medium has both a reproduction-only area and a recordable area. The reproduction-only area stores video content data, an application program for adjusting image quality, and initial setting data for image quality adjustment. In the recordable area, user setting data for image quality adjustment set by the user in the display device can be stored.
When the optical recording medium is inserted into the recording / reproducing apparatus, the recording / reproducing apparatus reads the application program from the reproduction-dedicated area of the optical recording medium and writes the application program to a working memory built in the recording / reproducing apparatus. Process,
When the user setting data is stored in the recordable area, a second step of reading the user setting data and adjusting the image quality of the display device;
When the user setting data is not stored in the recordable area, the initial setting data is read from the reproduction-only area, and the image quality adjustment of the display device is performed,
The method for automatically adjusting image quality, wherein the second and third steps are executed based on the application program read in the first step. A plurality of the initial setting data stored in the reproduction-only area is stored corresponding to the device type of the display device, and the user setting data stored in the recordable area is subjected to image quality adjustment. The device type of the display device when it is performed is stored correspondingly,
In the second step,
When the device type of the connected display device matches the device type stored corresponding to the user setting data, the image quality of the display device is adjusted using the user setting data,
If they do not match, the user setting data is connected to the initial setting data corresponding to the device type of the display device at the time of image quality adjustment among the initial setting data stored in the reproduction-only area. It converts using the initial setting data corresponding to the device type of the display device, performs the image quality adjustment of the display device using the user setting data after this conversion,
The image quality automatic adjustment method according to claim 1, wherein in the third step, the image quality of the display device is adjusted using initial setting data corresponding to the device type of the connected display device. Furthermore, as a process executed based on the application program,
When the user performs image quality adjustment on the display device during playback of the video content data, the image quality adjustment result is transmitted from the display device to the recording / playback device, and stored in the recordable area as the user setting data. 3. The image quality automatic adjustment method according to claim 1, further comprising a fourth step of writing. It has both a playback-only area and a recordable area. The playback-only area stores video content data, an application program for adjusting image quality, and initial setting data for image quality adjustment. The possible area can store user setting data for image quality adjustment set by the user in the display device,
4. The image quality automatic adjustment disk according to claim 1, wherein the application program is a program for causing the CPU of the recording / reproducing apparatus to execute each step in the image quality automatic adjustment method according to claim 1. .

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