JP2008258699A - Image reproducing device and image reproducing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To decide image data of display specifications which can be displayed as an object to be reproduced by neither troubling nor confusing a user. <P>SOLUTION: Based upon image display specifications of the image data to be reproduced, device display specifications acquired from an HDMI-connected display device 2, and a display specification pattern which is predetermined and stored in, for example, a nonvolatile memory 94, image data are skipped which can not be displayed on the display device 2 with its image display specifications, can not be converted according to a predetermined display specification conversion pattern, or can not be displayed on the display device 2 since display specifications after conversion do not match the device display specifications. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an apparatus for reproducing an image such as an image reproduction block of a digital video camera or a DVD (Digital Versatile disc) player, and a method for reproducing an image used in the apparatus.

  For example, in a so-called HDMI output device (for example, an image playback device such as a digital video camera or a DVD player) that outputs image data through a digital interface that conforms to the HDMI (High Definition Multimedia Interface) standard, it is connected to it. In response to so-called HDMI repeater devices (for example, AV amplifiers) and HDMI sink devices (for example, display devices), which are devices that accept image data through a digital interface that conforms to the HDMI standard, the resolution is improved by user operation and automatic resolution conversion function. There are some which can set information on display specifications such as.

  On the other hand, in a display device having a digital interface compliant with the HDMI standard, information such as resolution for image data that can be handled by the device itself is set in advance, and is provided internally as EDID (Extended Display Identification Data) information. Stored in a ROM or the like.

  In a display device having a digital interface compliant with the HDMI standard, only one piece of information such as resolution for image data that can be handled is determined in advance, or resolution for image data that can be handled. In general, information such as resolution for image data that can be processed for each display device is different.

  For this reason, the HDMI output device (image reproduction device) can be set with information such as resolution in order to correspond to the resolution of the display device to which the device itself supplies image data, or Some HDMI output devices have a function of automatically changing information such as resolution.

  In Patent Document 1 described later, as described above, EDID information that is information such as resolution of image data that can be handled by the own device managed in the display device is used, and the display device supplies image data. A technique for controlling the display mode of the original system apparatus is disclosed.

  Further, in Patent Document 2 described later, in a so-called HDMI output device, EDID information of a display device that is an output destination of image data is used, and when a user changes information such as resolution, a destination to which image data is supplied is described. A technique is disclosed in which a resolution or the like that cannot be supported by a display device cannot be selected in advance.

The above-mentioned Patent Document 1 and Patent Document 2 are as follows.
Japanese Patent Laid-Open No. 11-15425 JP-A-2005-341190

  However, between the image playback device that is the HDMI output device and the display device that is the HDMI sink device, the HDMI output device has a function that can change the setting of information such as resolution as described above. However, it is not always possible to output image data to a display device at a resolution that can be displayed by the display device.

  For example, an image playback device capable of outputting image data with a resolution of 1920 × 1080i or 720 × 480p, such as a digital video camera, and a display device for a personal computer capable of displaying only image data with a resolution of 640 × 480 pixels Or when an image playback device that can output only image data with a video frequency of 60 Hz is connected to a display device that can display only image data with a video frequency of 50 Hz. An image corresponding to the above cannot be displayed on the display device.

  In this specification, as described above, the resolution is expressed by the number of pixels in the horizontal direction × the number of lines in the vertical direction, and the letter “i” after the number of lines in the vertical direction has a scanning method. This indicates that the image data is interlace (interlaced scanning), and the letter “p” after the number of lines in the vertical direction also indicates that the scanning method is progressive (sequential scanning) image data.

  In recent years, various image data having different display specifications such as resolution, scanning method, and video frequency have been provided via broadcast media, communication networks, or various storages (recording media). ing. Also, when an image is taken with a digital video camera, the resolution of image data to be taken and recorded in the storage may be changed by switching the shooting mode.

  For this reason, it is considered that image data having different display specifications such as resolution, scanning method, and video frequency may be recorded together in one storage. As described above, when image data is read from a storage in which image data having different display specifications are recorded and supplied to a predetermined display device for reproduction, it cannot be displayed if the image data is provided to the display device as it is. In some cases, there is a case where the image data is present, or even if it is attempted to convert the display specifications such as the resolution on the image reproducing apparatus side, it cannot be converted to the image data having the display specifications that can be handled on the display apparatus side.

  In this way, when image data that can be displayed on a display device and image data that cannot be displayed are mixed in one storage, when image data that cannot be displayed is reproduced, no image is displayed. Therefore, it may be mistaken for a device failure.

  Further, even if it is understood that there is image data that cannot be reproduced depending on the display specification of the image data, it is difficult for the user himself to distinguish between reproducible image data and non-reproducible image data on the display device. Even if it can be distinguished, if the user tries to reproduce only the reproducible image data by skipping the unreproducible image data, the user himself / herself skips the unreproducible image data by operating the key of the image replay device. Operation is troublesome because an instruction must be given to the image playback device via a remote control unit or a remote commander (hereinafter abbreviated as a remote controller).

  In view of the above, the present invention eliminates the above-mentioned problems and may bother the user (user) even when performing reproduction processing for a plurality of image data having different display specifications. It is another object of the present invention to make it possible to display image data with display specifications that can be displayed without causing confusion for the user.

In order to solve the above-described problem, an image reproduction device according to claim 1 is provided.
A first output end of image data supplied to the display device;
An input end of information from the display device;
Reading means for reading image data to be output from the recording medium;
Discriminating means for discriminating an image display specification which is a display specification of the image data to be output read from the recording medium by the reading means;
An acquisition means for acquiring, through the input terminal, a device display specification that is a display specification of image data that can be displayed on the display device;
Display specification conversion means for converting an image display specification of image data to be output from the own device in accordance with one or more predetermined display specification conversion patterns that can be processed by the own device;
The image data to be output based on the image display specification determined by the determination unit, the device display specification acquired by the acquisition unit, and one or more predetermined display specification conversion patterns. However, whether or not the image data can be displayed on the display device without converting the image display specification or by converting the image display specification through the display specification conversion means. Discrimination means;
In the display possibility determination unit, when it is determined that the image data to be output is an image that cannot be displayed on the display device, the read unit is controlled to read different image data. Changing means for changing the reading position of the image data from the recording medium.

  According to the image reproducing apparatus of the first aspect of the present invention, the image display specifications of the image data to be output determined through the determining means (the image display specifications of the image data read out by the reading means), the input terminal, Based on the device display specification that is the display specification of the image that can be displayed on the display device of the connection destination acquired through the acquisition unit and one or more predetermined display specification conversion patterns, the display availability determination unit outputs It is determined whether the target image data can be displayed on the display device. Then, when it is determined that the image data to be output cannot be displayed on the display device, the changing unit reads the image data on the recording medium so that the different image data is read out. Is changed.

  As a result, image data that cannot be displayed on the display device to which the image data is supplied can be automatically skipped (skip) without bothering the user. Therefore, even when image data having display specifications that cannot be displayed on the display device is to be displayed, the state in which no image is displayed does not continue and the user (user) is not confused. Will be able to.

  According to the present invention, even when image data with display specifications that cannot be displayed on the display device is a display target, instead of troublesome user's hand, instead of image data with display specifications that cannot be displayed, Image data having display specifications that can be displayed can be reproduced. Therefore, even when image data having display specifications that cannot be displayed on the display device is to be displayed, the user can be prevented from being confused.

  Hereinafter, an embodiment of an apparatus and a method according to the present invention will be described with reference to the drawings. In the embodiments described below, the present invention will be described by taking as an example a case where the present invention is applied to a playback system of a digital video camera. In addition, the digital video camera can record audio along with images on a recording medium, and can also play back from the recording medium. The processing system for unrelated audio data is omitted.

[First Embodiment]
[Configuration example of digital video camera]
FIG. 1 is a block diagram for explaining a configuration example of a digital video camera to which an embodiment of the present invention is applied. As shown in FIG. 1, the digital video camera 1 of this embodiment includes an external input unit 11, a camera unit 12, a switch circuit SW1, a baseband processing unit 20, an encoder 31, a recording unit 32, a switch circuit SW2, and a storage 40. A reading unit 51, a decoder 52, a signal output interface (hereinafter abbreviated as a signal output I / F) 60, a display system interface (hereinafter abbreviated as a display system I / F) 70, an operation reception interface (hereinafter abbreviated as “signal output I / F”) This is referred to as an operation acceptance I / F.) 80 and a system control unit 90.

  In FIG. 1, the operation reception I / F 80 includes various operation keys, dial keys, and the like. The operation reception I / F 80 can receive an operation input from a user, convert it into an electrical signal, and supply it to the system control unit 90. is there. Although not shown in FIG. 1, the system control unit 90 includes a non-volatile memory such as a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), and an EEPROM (Electrically Erasable and Programmable ROM). A microcomputer connected through a bus can execute a program recorded in a ROM, form a control signal to be supplied to each part, and supply the control signal to each part.

  As a result, the system control unit 90 forms a control signal to be supplied to each unit according to the operation input from the user received through the operation reception I / F 80, and supplies the control signal to each unit, thereby allowing the operation input from the user to be performed. The corresponding processing can be executed. That is, the digital video camera 1 according to the first embodiment can be operated according to a user instruction by the function of the system control unit 90.

  Next, operations during recording and reproduction of the digital video camera 1 shown in FIG. 1 will be described. First, the operation during recording will be described. As shown in FIG. 1, the digital video camera 1 of this embodiment includes an external input unit 11 and a camera unit 12 as image information input ends.

  In the first embodiment, in order to simplify the description, the external input unit 11 will be described as an analog image signal input end. That is, in the first embodiment, the external input unit 11 of the digital video camera 1 converts the analog image signal received through the input end of the analog image signal and the digital image signal into the digital image signal, although not shown. It comprises a / D (Analog / Digital) conversion unit and the like, which accepts supply of an analog image signal, converts it into digital image data, and takes it in.

  Here, the external input unit 11 is an analog image signal input end, but may be configured as a digital image signal input end. Of course, it is possible to provide both an input end of an analog image signal and an input end of a digital image signal.

  Although not shown, the camera unit 12 captures through an objective lens, a focus mechanism, a diaphragm mechanism, a shutter mechanism, an image sensor such as a CCD (Charge Coupled Device) or a CMOS (Complementary Metal Oxide Semiconductor) image sensor, and the image sensor. It comprises an A / D conversion unit that converts an image signal into a digital signal, and captures an image of a target subject as digital image data.

  Whether image data is captured through the external input unit 11 or image data through the camera unit 12 can be selected by switching the switch circuit SW1 controlled by the system control unit 90.

  The image data converted into a digital signal from the external input unit 11 or the camera unit 12 is supplied to the baseband processing unit 20. The baseband processing unit 20 performs predetermined processing such as adding necessary information or adjusting the format on the image data supplied thereto, thereby supplying image data to be supplied to the encoder 31; Image data to be supplied to the signal output I / F 60 and the display system I / F 70 is formed, and each is supplied to the corresponding circuit portion.

  The encoder 31 performs data compression processing (encoding processing) on the image data supplied thereto by a predetermined method, and supplies the data to the recording unit 32. At the time of recording image data, the switch circuit SW2 is switched to the recording unit 32 side under the control of the system control unit 90. Thereby, the recording unit 32 can record the compressed image data supplied thereto in the storage 40 under the control of the system control unit 90.

  On the other hand, the signal output I / F 60 of this embodiment corresponds to a digital interface (HDMI interface (hereinafter abbreviated as HDMII / F)) compliant with the HDMI standard, and image data supplied thereto. Is converted into image data in a format compliant with the HDMI standard, and is supplied to the display device 2 as an external device through the digital I / F cable 3 compliant with the HDMI standard. Thereby, an image corresponding to the image data to be recorded can be displayed on the display screen of the display device 2, and the image to be recorded can be monitored simultaneously with the image recording process.

  The display system I / F 70 includes, for example, a display element such as an LCD (Liquid Crystal Display) and an LCD controller, and forms an image signal to be supplied to the display element from the image data from the baseband processing unit 20. By supplying this to the display element, an image corresponding to the image data is displayed on the display screen of the display element. Note that the display system I / F 70 can also display various guidance messages, warning messages, and the like in accordance with the control of the system control unit 90.

  Next, an operation for reproducing image data recorded in the storage 40 will be described. In this case, the switch circuit SW2 is switched to the reading unit 51 side under the control of the system control unit 90. Then, under the control of the system control unit 90, the reading unit 51 reads out target image data from the image data compressed in the storage 40 and supplies this to the decoder 52.

  The decoder 52 performs compression / decompression processing (decoding processing) on the compressed image data supplied thereto, restores the original image data before data compression, and supplies this to the baseband processing unit 20. In this case, the baseband processing unit 20 forms image data to be supplied to the signal output I / F 60 and the display system I / F 70 from the image data from the decoder 52, and these are formed into the signal output I / F 60 and the display system I / F 70. To supply.

  As a result, the image data read from the storage 40 is converted into image data that conforms to the HDMI standard at the signal output I / F 60 and is supplied to the display device 2 through the digital I / F cable 3 that conforms to the HDMI standard. In this case, an image corresponding to the reproduction target image data read from the storage 40 can be displayed on the display screen of the display device 2. An image corresponding to the image data to be reproduced is also displayed on the display screen of the display element of the display system I / F 70.

  In the digital video camera 1 of the first embodiment, it is conceivable to use various recording media such as a magnetic tape, an optical disk such as a DVD (Digital Versatile Disc), a hard disk, and a flash memory as the storage 40. . In the following, a case where the storage 40 is a magnetic tape will be mainly described as an example, but a case where the storage is a disk medium such as a DVD will be described as necessary.

  The magnetic tape and DVD that can be used as the storage 40 are usually exchangeable, and some hard disks and flash memories are also exchangeable. In this way, because the storage can be exchanged, it is used in various recording devices and recording / reproducing devices, and it is compared that image data with different display specifications such as resolution, video frequency, color space, etc. are recorded together. Can happen easily.

  In addition, even when the storage is used only by the same recording device, it is possible to form and record image data having different image display specifications according to the recording mode, and to record image data having various display specifications. In the case of an apparatus, image data having a plurality of display specifications may be recorded together in one storage.

  Here, as described above, the resolution that is one piece of display specification information is the number of pixels in the horizontal direction × the number of lines in the vertical direction and the scanning method, for example, 1920 × 1080i and 720 × 480p. It is the information which consists of the alphabet to show. The video frequency which is one of the image display specifications is information indicating that the synchronization frequency of the image data is 60 Hz or 50 Hz. A color space, which is one of image display specifications, is information indicating how colors of image data are represented, and includes information indicating a color system used.

  In the display device to which the image data is output, there are display specifications that can be handled and display specifications that cannot be handled. Therefore, the digital video camera 1 of this embodiment displays the image data supplied to the display device 2. The specification (image display specification) can be converted in accordance with a predetermined display specification conversion pattern.

  However, the display specification conversion is not compatible with all patterns, and as described above, the display specification conversion is performed so that the display device 2 can be converted into several display specifications that are likely to be compatible. The pattern is predetermined. For this reason, image data that can be displayed on the display device to which the image data is supplied and image data that is not so may be mixed in one storage, resulting in inconvenience.

  In view of this, in the digital video camera 1 of this embodiment, when reproducing the image data recorded in the storage, the image display specification that is the display specification of the image data to be reproduced and the display specification of the own device are determined. Playback based on a predetermined display specification conversion pattern indicating which display specifications can be converted and a device display specification that is a display specification that can be supported by the display device 2 to which the image data is supplied Appropriately determines whether the target image data can be displayed on the display device to which the image is supplied, and automatically reproduces the image data to be reproduced into the reproducible image data without reproducing the image data that cannot be displayed. To be able to change.

  As described above, in this specification, in order to simplify the explanation, the display specification for the image data recorded in the storage or recorded in the storage is the image display specification, and the image data supply destination The display specifications of the image data that can be handled by the display apparatus are distinguished and used as the apparatus display specifications. The display specification conversion pattern indicates a conversion pattern of the image display specification of image data made possible in advance in the digital video camera 1.

[Operation of playback system and display device]
FIG. 2 is a block diagram for explaining a connection relationship between the reproduction system portion of the digital video camera 1 shown in FIG. 1 and a display device to which image data is supplied. In FIG. 2, attention is paid to the reproduction system portion of the digital video camera 1, and the recording system portion is omitted. Further, the switch circuit SW2 for switching between the reproduction system portion and the recording system portion shown in FIG. 1 is also omitted.

  As will be described later, the playback system portion of the digital video camera 1 according to the present embodiment includes a digital interface (hereinafter abbreviated as HDMII / F) conforming to the HDMI standard. The HDMI connector unit 62 implements the HDMII / F function.

  The display device 2 also includes an HDMII / F, and includes an HDMI connector unit 201, an HDMI control unit 202 that realizes a function as an HDMI receiver, and a memory 202 that stores EDID (Extended Display Identification Data) information. Therefore, the HDMII / F function is realized.

  Here, the EDID information stored and held in the memory 203 of the display device 2 is information about display specifications such as the resolution type, video frequency, and color space of image data that can be processed by the display device 2. As described above, the display device 2 is a so-called HDMI sink device connected to the digital video camera 1 through the HDMII / F.

  In the first embodiment, the digital video camera 1 and the display device 2 are connected between the HDMI connector unit 62 and the HDMI connector unit 201 by a digital I / F cable 3 compliant with the HDMI standard. The digital video camera 1 can supply image data to the display device 2 and can acquire EDID information from the display device 2.

  In addition, the system control unit 90 of the digital video camera 1 can determine whether or not the display device is electrically connected through a predetermined line provided in the HDMII / F.

  As shown in FIG. 2, the playback system portion of the digital video camera 1 according to the first embodiment includes a storage 40, a readout unit 51, a decoder 52, a resolution determination unit 21, a resolution conversion unit 22, and an HDMI transmitter 61. , An HDMI connector section 62 and a display system I / F 70.

  Here, the functions of the resolution discriminating unit 21 and the resolution converting unit 22 are realized as the functions of the baseband processing unit 20 shown in FIG. 1. As will be described later, the resolution of the image data is determined. The present invention realizes a function of discriminating an image display specification including the image and converting the image display specification. Further, the HDMI transmitter 61 and the HDMI connector unit 62 realize the function of the signal output I / F 60 shown in FIG. 1, and realize the function of the HDMII / F as described above.

  Each circuit constituting the reproduction system portion can operate in accordance with the control of the system control unit 90, as indicated by a dotted arrow from the system control unit 90 in FIG. As shown in FIG. 2, the system control unit 90 is a microcomputer formed by connecting a CPU 91, a ROM 92, a RAM 93, and a non-volatile memory 94 through a CPU bus. Each unit can be controlled in accordance with an operation input from the.

  The CPU 91 of the system control unit 90 executes a program stored in the ROM 92 or the nonvolatile memory 94 to form and supply a control signal to be supplied to each unit, thereby controlling each unit. It will be. As described above, the ROM 92 records programs executed by the CPU 91, data necessary for processing, and the like.

  The RAM 93 is mainly used as a work area, such as temporarily storing intermediate results of processing. The nonvolatile memory 94 stores and holds information that needs to be retained even when the power is turned off, such as various setting parameters, programs and data for adding functions, and the like. In the digital video camera 1 of this embodiment, the nonvolatile memory 94 also has information indicating a display specification conversion pattern indicating which image display specification can be converted from which image display specification in the resolution conversion unit 22 described later. It is something that is retained.

  Then, under the control of the system control unit 90, the reading unit 51 reads target image data to be reproduced from the storage, and supplies this to the decoder 52. As described above, since the image data recorded in the storage 40 is data-compressed, the decoder 52 compresses and decompresses the image-compressed image data supplied to the data before compression. The original image data is restored and supplied to the resolution discrimination unit 21.

  The resolution determination unit 21 determines the image display specifications such as the resolution of the image data based on the information included in the image data supplied thereto, notifies the determination result to the system control unit 90, and the image data This is supplied to the resolution converter 22. Here, the image display specification of the reproduction target image data notified from the resolution determination unit 21 to the system control unit 90 is temporarily stored in, for example, the RAM 93 of the system control unit 90.

  If the image data from the resolution discriminating unit 21 does not require conversion of display specifications such as resolution under the control of the system control unit 90, the resolution converting unit 22 is directly connected to the HDMI transmitter 61 and the display system. When the image data from the resolution discriminating unit 21 needs to be converted into a display specification such as resolution, the display specification such as resolution is converted, and the converted image is supplied to the I / F 70. Data is supplied to the HDMI transmitter 61 and the display system I / F 70.

  That is, as described above, the system control unit 90 grasps the image display specification of the image data to be reproduced based on the information supplied from the resolution determination unit 21 and temporarily stored in the RAM 93. Further, the system control unit 90 stores a display specification conversion pattern, which is information indicating which display specifications can be converted from which display specifications in the non-volatile memory 94 in the resolution conversion unit 22. .

  Further, the system control unit 90 can process the display device 2 stored in the memory 203 of the display device 2 through the HDMII / F data signal line and clock signal line (DDC (Display Data Channel) line). Device display specifications such as the resolution type of image data, video frequency, and color space are acquired and temporarily stored in, for example, the RAM 93.

  Therefore, the system control unit 90 compares the image display specification of the current reproduction target image data temporarily stored in the RAM 93 with the device display specification of the display device 2, and determines the reproduction target image data as the image display specification. The system control unit 90 determines the display specifications of the image data from the resolution determination unit 21 to the resolution conversion unit 22 when it is determined that the image can be output without conversion. Control is performed so that the output is passed through without conversion.

  In addition, the system control unit 90 needs to convert the image display specification based on the comparison result between the image display specification of the current image data to be reproduced that is temporarily stored in the RAM 93 and the device display specification of the display device 2. When the determination is made, the display specification conversion pattern stored in the nonvolatile memory 94 is referred to, and the display device 2 can handle the image display specification of the image data to be reproduced in the resolution conversion unit 22 of the own device. It is determined whether or not conversion is possible.

  Here, when it is determined that the image display specification of the image data to be reproduced can be converted by the resolution conversion unit 22 of the own device so that it can be handled by the display device 2, the system control unit 90 displays the non-volatile memory. After the resolution conversion unit 22 is controlled according to the display specification conversion pattern stored and held in 94 and the image display specification of the image data to be displayed is converted into an image display specification that can be handled by the display device 2, the image display specification is changed. Control to output the converted image data.

  Further, when the resolution conversion unit 22 of the own device determines that the image display specification of the image data to be reproduced cannot be converted so that the display device 2 can handle it, the system control unit 90 causes the reading unit 51 to By controlling, the image data currently being reproduced is skipped and other image data is read out.

  As described above, when the system control unit 90 of the digital video camera 1 according to the first embodiment reads and reproduces the image data stored in the storage 40, the image display of the image data to be reproduced is displayed. Based on the specification, the device display specification that is a display specification that can be supported by the display device, and the display specification conversion pattern that indicates the display specification pattern that can be converted by the own device, an image is displayed so as to be supported by the display device 2 When it is determined that the specification cannot be converted, the image data to be reproduced can be changed to other image data (different image data).

  Then, as described above, the resolution conversion unit 22 uses the image data to be reproduced as it is or the image data obtained by converting the image display specifications as the HDMI transmitter 61 and the display system I under the control of the system control unit 90. / F70 is supplied.

  The HDMI transmitter 61 converts the image data from the resolution conversion unit 22 into HDMI standard data according to the control of the system control unit 90, performs encryption, and the like, and outputs an image from its own device through the HDII / F. It forms data. The output image data formed by the HDMI transmitter 61 is supplied to the display device 2 through the HDMI connector unit 62 and the HDMI standard digital I / F cable 3.

  In the display device 2, image data from the digital video camera 1 is received through the HDMI connector unit 201 and supplied to the HDMI control unit 202. The HDMI control unit 202 converts the encrypted image data from the digital video camera 1 into image data that can be processed by the own device, for example, and outputs it to the display screen of the display element of the own device. It is used as image data for displaying an image.

  As described above, when the digital video camera 1 according to this embodiment reproduces the image data recorded in the storage 40, whether or not the image data to be reproduced can be appropriately reproduced on the display device 2 as the supply destination. When it is determined that the image cannot be properly reproduced, the image data to be reproduced can be automatically changed without bothering the user.

  In addition, an image corresponding to the image data to be reproduced can be displayed on the display element of the display system I / F 70 of the digital video camera 1. Further, as will be described in detail later, for example, when a message indicating that playback is in progress is displayed or the image data is skipped through the display system I / F 70 of the digital video camera 1. Can display a message indicating that image data is being read out.

  Next, as described with reference to FIG. 2, the reproduction system portion of the digital video camera 1 in the case where an image corresponding to the image data from the digital video camera 1 of the embodiment is displayed on the display device 2. The process will be described using a specific example.

Here, it is assumed that the following four image display specification image data are recorded in the storage 40 of the digital video camera 1 in the order of (1) to (4). That is,
(1) 1920 × 1080p @ 60Hz
(2) 1920 × 1080i @ 60Hz
(3) 1920 × 1080i @ 50Hz
(4) 1920 × 1080i @ 60Hz
It is assumed that four image data (four different image contents) having the image display specifications are recorded in the storage 40 in this order.

Further, it is assumed that the predetermined three display specification conversion patterns are stored and held in the nonvolatile memory 94 of the system control unit 90 of the digital video camera 1. That is,
(A) Conversion from 1920 × 1080p @ 60 Hz to 1920 × 1080i @ 60 Hz (B) Conversion from 1920 × 1080i @ 60 Hz to 720 × 480i @ 60 Hz (C) Three display specification conversion patterns without conversion are stored and held It shall be. In this example, even when it is not necessary to convert the image display specification, it is grasped as one of the convertible patterns as shown in (C).

Further, it is assumed that the system control unit 90 knows that the following four device display specifications exist as device display specifications that are display specifications that can be handled by the display device 2. That is,
(A) 1920 × 1080i @ 60Hz
(B) 720 × 480i @ 60Hz
(C) 720 × 480p @ 60Hz
(D) 640 × 480p @ 60Hz
It is assumed that the following four device display specifications exist.

  In the description of the display specifications described above, for example, a portion described as “1920 × 1080i” or the like uses the same description format as in the case of the resolution described above, and “number of pixels in the horizontal direction × vertical direction”. This is a part indicating the resolution information represented by the “number of lines scanning method”, and the description of the frequency of 60 Hz and 50 Hz immediately after @ is a part indicating the video frequency. Further, in this embodiment, information on the color space is not used for the sake of simplicity.

  Then, the system control unit 90 of the digital video camera 1 controls the reading unit 51 to read and reproduce the image data stored in the storage 40 in order from the top. In this case, first, image data whose image display specification is (1) 1920 × 1080p @ 60 Hz is read and reproduced, and the image display specification is the above-described (a), (b), (c ) And (d), the image data cannot display an image on the display device 2 as it is.

  However, as described above, the resolution conversion unit 22 of the digital video camera of this embodiment can convert 1920 × 1080p @ 60 Hz to 1920 × 1080i @ 60 Hz as the display specification conversion pattern (A). Therefore, the system control unit 90 controls the resolution conversion unit 22 to perform conversion from 1920 × 1080p @ 60 Hz to 1920 × 1080i @ 60 Hz so that it can be displayed on the display device 2. Is done.

  Next, under the control of the system control unit 90, the reading unit 51 reads out and reproduces image data whose image display specifications are (2) 1920 × 1080i @ 60 Hz from the storage 40. The specification corresponds to (a) and can be handled by the display device 2.

  For this reason, the system control unit 90 controls the resolution conversion unit 22 so as to output the supplied image data as it is without converting the resolution or the like (through). As a result, the image data whose image display specification read from the storage 40 is (2) 1920 × 1080i @ 60 Hz is displayed on the display device 2.

  Next, under the control of the system control unit 90, the reading unit 51 reads out and reproduces the image data whose image display specification is (3) 1920 × 1080i @ 50 Hz from the storage 40. The specification does not correspond to any of the above-described image display specifications (a), (b), (c), and (d). Therefore, in the state as it is, the image data is displayed on the display device 2 as an image. It cannot be displayed. Moreover, as shown in the display specification conversion patterns (A), (B), and (C) described above, some resolution conversion units 22 cannot be converted into image display specifications that can be displayed on the display device 2. Eventually, the display device 2 cannot display.

  Therefore, the system control unit 90 uses the reading unit 51 for image data having an image display specification that cannot be handled by the display device 2 and that cannot be converted into an image display specification that can be handled by the display device 2. The read position is moved to the beginning of the next image data by performing fast forward processing or skip processing on the section on the storage 40 in which image data that cannot be displayed is recorded.

  Finally, image data whose image display specification is (4) 1920 × 1080i @ 60 Hz is read from the storage 40 again and reproduced. As described above, this corresponds to the device display specification of (a) and is an image display specification that can be displayed on the display device 2, so that the system control unit 90 allows the resolution conversion unit 22 to output image data. Therefore, the image data with the image display specification of (4) 1920 × 1080i @ 60 Hz is supplied to the display device 2 and displayed.

  As described above, in the digital video camera 1 of this embodiment, image data that is not subjected to display processing in the display device 2 and cannot be converted into image display specifications that can be displayed on the display device 2 with the image display specifications as they are. Can be skipped, and the reading position can be automatically changed to the head position where the image data to be reproduced next is recorded. Therefore, the display device 2 can be operated without bothering the user. Only the displayable image data can be read and reproduced. In other words, the time during which the reproduced image is not displayed on the display device 2 can be stopped to the minimum without bothering the user.

[Operation during playback (when storage is a magnetic tape)]
Next, in the digital video camera 1 according to the first embodiment, as described above, the reproduction process of the image data recorded in the storage 40 when the display device 2 is connected through the HDMI connector unit 62. This will be described with reference to the flowchart of FIG. Here, the storage 40 will be described assuming that a magnetic tape is used.

  FIG. 3 is a flowchart for explaining processing at the time of reproduction in the digital video camera 1 according to the first embodiment. The system control unit 90 is a case where an image data reproduction instruction input from the storage 40 is received through the operation reception I / F 80 and the display device 2 is connected to the HDMI connector unit 62. Performs the process shown in FIG. In this case, whether or not the display device 2 is connected through the HDMI connector unit 62 can be detected by detecting the presence or absence of connection to a predetermined terminal defined in the HDMII / F. Has been.

  Then, the system control unit 90 reads the EDID information from the memory 203 of the display device 2 through the HDMII / F DDC line, and temporarily stores it in its own RAM 93 (step S101). Here, as described above, the EDID information is information indicating the device display specifications in the display device 2, and as described above, it is information such as resolution, scanning method, video frequency, and color space.

  Next, as described above, the system control unit 90 recognizes by referring to the display specification pattern (display specification conversion pattern) that can be converted by the own device, which is stored in the nonvolatile memory 94 in advance. (Step S102). Thereafter, the system control unit 90 controls the reading unit 51 to start reading target image data from the storage 40 (step S103).

  Then, the system control unit 90 controls the decoder 52 and the resolution determination unit 22, and first, the decoder 52 performs compression / decompression processing of the image data that has been compressed, and restores the original image data before the data compression. After that, the resolution determination unit 21 determines the image display specification α such as the resolution of the image data (step S104). The determination result here is temporarily stored in the RAM 93 of the system control unit 90 so as to be grasped.

  Next, the system control unit 90 determines whether or not the image display specification of the image data to be output can be converted based on the already acquired information (step S105). In step S105, the EDID information read out in step S101 (corresponding to the device display specification), the display specification conversion pattern recognized in step S102, and the image display specification α of the image data to be output determined in step S104. In consideration, the image display specification α of the image data to be output can be directly supported by the display device 2, and the image display specification α of the image data to be output can be directly supported by the display device 2. However, if it is possible to convert to an image display specification that can be handled by the display device 2 according to the display specification conversion pattern, it is determined that the image display specification α can be converted.

  That is, in step S105, the image display specification α of the image data to be output is not directly compatible with the display device 2, and is converted into an image display specification compatible with the display device 2 according to the display specification conversion pattern. If it is impossible, it is determined that the image display specification α cannot be converted.

  If it is determined in step S105 that the image display specification α can be converted, and the image display specification α of the image data to be output is compatible with the display device 2 as it is, The system control unit 90 controls the resolution conversion unit 22 to output the supplied image data as it is, and the image display specification α of the image data to be output is not compatible with the display device 2 as it is. However, if it is possible to convert to an image display specification that can be supported by the display device 2 in accordance with the display specification conversion pattern, the system control unit 90 controls the resolution conversion unit 22 to display the image in accordance with the corresponding display specification conversion pattern. The display specification is converted, and the converted image display specification image data is output (step S10). ).

  Next, the system control unit 90 controls the HDMI transmitter 61 to process the image data from the resolution conversion unit 22 and convert the image data so that it can be transmitted via the HDM II / F (step S107). Thereafter, the data is output to the display device connected through the HDMI standard digital I / F cable 3 through the HDMI connector unit 62 (step S108).

  Then, the system control unit 90 ends reading of all the image data and ends the playback process when there is no image data to be read or when a playback end instruction is received from the user through the operation reception I / F 80. It is determined whether or not an event to be performed has occurred (step S109). When it is determined that no event has occurred, the processing from step S104 is repeated. If it is determined in step S109 that an event that should end the reproduction process has occurred, the process shown in FIG. 3 ends.

  In the determination process of step S105, when it is determined that the image display specification α of the image data to be output cannot be converted so as to be compatible with the display device 2, the system control unit 90 controls the reading unit 51. Then, fast-forwarding is performed so as to change the reading position up to the recording portion of the image data with different image display specifications (step S110).

  Then, the system control unit 90 controls the display system I / F 70 to display the current state (step S111). That is, since the read image data has an image display specification that cannot be displayed on the display device 2, the display device 2 displays that the image cannot be displayed.

  Further, since the read image data has an image display specification that cannot be displayed on the display device 2, the system control unit 90 forms a display message indicating that the image cannot be displayed on the display device 2. 61. After the display message 2 is displayed on the display device 2 by being supplied to the display device 2 through the HDMI connector unit 62 (step S112), the processing from step S104 is performed after the change of the reading position. Try to repeat.

  Thus, until the image data of the image display specification that can be displayed on the display device 2 is found, the processing of step S104, step S105, step S110, step S111, and step S112 is repeated, whereby an image that cannot be reproduced on the display device 2 is displayed. Data can be skipped without bothering the user.

  Therefore, even when image data having various image display specifications is recorded in the storage 40 in a mixed manner, the digital video camera 1 of this embodiment is connected through the HDMI II / F (HDMI connection). Only the image data that can be handled by the display device 2 can be supplied to the display device 2 and reproduced. In addition, when there is unreproducible image data, it is possible to notify the user that the image data to be reproduced is changed because the image data cannot be reproduced.

  As described above, the storage 40 of the digital video camera 1 that performs the processing shown in FIG. 3 has been described as being a magnetic tape. That is, in the case of a magnetic tape, the recording data can be read at an arbitrary speed, but the reading position cannot be instantaneously skipped to the recording start position of the image data having a different image display specification (change of the image display specification). . The fast-forward process in step S110 shown in FIG. 3 requires a certain amount of time, and the process in steps S111 and S112 displays a state in the case of fast-forward so that the user can recognize that the device has failed. I try not to make a mistake.

[Operation during playback (when the storage is a randomly accessible medium)]
By the way, if the storage 40 is a random access device such as a DVD, a hard disk, or a flash memory, it is possible to change the reading position by changing the reproduction speed in the same manner as in the case of a magnetic tape. The reading position can be dynamically positioned at a target position on the medium, that is, skipping can be performed. For this reason, in the case where a random accessible medium such as a DVD, a hard disk, or a flash memory is used as the storage 40 and the reading position of the storage 40 is changed, the processing of the flowchart shown in FIG. 3 is slightly different. It will be.

  FIG. 4 is a diagram for explaining processing when reproducing image data recorded in the storage 40 when a storage medium such as a DVD, a hard disk, or a flash memory that can be randomly accessed is used as the storage 40. It is a flowchart of. The process shown in FIG. 4 is also a case where an image data reproduction instruction input from the storage is accepted through the operation acceptance I / F 80, as in the process described with reference to FIG. When the apparatus 2 is connected, it is mainly executed by the system control unit 90.

  In FIG. 4, the processing from step S201 to step S209 is performed in exactly the same manner as the processing from step S101 to step S109 described with reference to FIG. In the determination processing in step S205, the image display specification of the image data to be output cannot be handled by the display device 2 and cannot be converted into an image display specification that can be handled by the display device 2. If it is determined, the system control unit 90 skips the playback portion up to the next image file (step S210).

  The process in step S210 is not a time-consuming process such as fast-forwarding a magnetic tape, but is performed in an instant. Therefore, the system control unit 90 controls the display system I / F 70, for example, “File The file number (file number) of the skipped file is displayed, such as “No. XX is skipped because it cannot be displayed on the display” (step S211). As a result, the user is notified that image data that cannot be displayed on the display device 2 has been skipped.

  Further, in order to clearly notify the user that the image data that cannot be displayed more clearly has been skipped, the image data that cannot be displayed on the display device 2 is reproduced, so that the image data has been skipped. Is sent to the HDMI transmitter 61, and the image data to be output is synthesized and output using, for example, an OSD (On Screen Display) technique (step S212). The display message is displayed on the display screen of the display device 2, and the processing from step S204 is repeated.

  As described above, when image data is read out from a storage that can be randomly accessed and played back, the display device 2 has an image display specification that cannot be displayed, so even if image data is skipped, it is skipped instantaneously. Is finished, the next image data is reproduced, and it is considered that the user may not recognize that the image data has been skipped.

  However, as described above, by displaying a message notifying that skipping has been performed, there is image data that has been skipped, and the user can grasp what it is. Therefore, when the target image data is skipped because it cannot be displayed because of the image display specifications, there is no misunderstanding that the target image data is not recorded or deleted. Can be.

[Second Embodiment]
The digital video camera 1 according to the first embodiment described above has been described as being capable of connecting one display device through the HDMII / F. However, in addition to HDMII / F, digital video cameras, for example, are provided with component signal output terminals for separately outputting R (red) signal, G (green) signal, and B (blue) signal, Alternatively, it is conceivable to provide an output terminal for a composite signal obtained by combining a color signal and a luminance signal.

  Therefore, in the second embodiment, in addition to the HDMII / F, for example, a component output terminal for image data is provided, and image data can be output through both the HDMII / F and the component output terminal. Image data playback processing in the digital video camera 4 will be described.

  In the case of the digital video camera 4 of the second embodiment as well, the recording system portion and the playback system portion are both shown in FIG. 1 except that the playback system portion is provided with a component output terminal. The configuration is the same as that of the digital video camera 1 of the first embodiment. Therefore, in the following, a configuration example of the playback system portion of the digital video camera 4 will be shown, and the operation will be described in detail.

[Operation of playback system and display device]
FIG. 5 is a block diagram for explaining the connection relationship between the reproduction system portion of the digital video camera 4 of the second embodiment and the display device to which image data is supplied. In FIG. 5, parts that are configured in the same manner as the playback system part of the digital video camera 1 of the first embodiment shown in FIG. 2 are given the same reference numerals, and detailed descriptions of those parts are as follows. Omitted.

  As shown in FIG. 5, the playback system portion of the digital video camera 4 of the second embodiment includes an HDMI transmitter 61 and an HDMI connector unit 62 that realize HDMII / F, and outputs image data as component signals. Component output terminals (hereinafter simply referred to as image output terminals) out are provided.

  The display device 2 as an HDMI sink device is connected through the HDMI connector unit 62 as in the playback system portion of the digital video camera 1 of the first embodiment shown in FIG. The display device 5 is connected to the image output terminal out. As described above, the display device 2 and the display device 5 are connected to the digital video camera 4 of the second embodiment through different interfaces.

  As shown in FIG. 5, even when the display device 2 and the display device 5 are connected through different interfaces, the same as in the case of the first embodiment described with reference to FIGS. In addition, for the display device 2 connected through the HDMII / F, the system control unit 90 displays whether the image data read from the storage 40 can be displayed on the display device 2 with the same image display specifications. If it is impossible, it can be determined whether it can be converted into an image display specification that can be displayed on the display device 2.

  However, the image display specification as it is cannot be displayed on the display device 2, and the digital video camera of the second embodiment cannot be converted into an image display specification that can be displayed on the display device 2. In this case, as in the case of the digital video camera 1 of the first embodiment, if the image data is skipped, the image data can be reproduced through the display device 5 connected through the image output terminal out. As a result, image data that can be reproduced through the display device 5 cannot be reproduced.

  Therefore, in the digital video camera 4 according to the second embodiment, the image data stored in the storage 40 is read and supplied to the display device 2 connected to the HDMI connector unit 62, and the image output terminal. When supplying to the display apparatus 5 connected to out, it operates as follows.

  That is, when the image display specification of the image data read from the storage 40 can be processed as it is in the display device 2 connected through the HDMI connector unit 62, the image display specification of the read image data is converted. Without being supplied to the display device 2 connected to the HDMI connector unit 62 and the display device 5 connected to the image output terminal out.

  Further, the image display specification of the image data read from the storage 40 cannot be processed as it is in the display device 2 connected through the HDMI connector unit 62, but can be converted into an image display specification that can be processed in the display device 2. In some cases, the image display specification of the read image data is converted into an image display specification that can be processed by the display device 2, and then connected to the display device 2 connected to the HDMI connector unit 62 and the image output terminal out. To the display device 5.

  In addition, the image display specification of the image data read from the storage 40 cannot be processed as it is in the display device 2 connected through the HDMI connector unit 62, and can be converted into an image display specification that can be processed in the display device 2. If it is not possible, it is determined whether or not a display device is connected to an output terminal for image data other than HDMII / F, and in the case of the second embodiment, to the image output terminal out.

  If it is determined that a display device is connected to an output terminal for image data other than HDMII / F, an image corresponding to the image data may be displayed through the display device connected to the output terminal. Therefore, the image data is output through HDMII / F and the output terminal other than HDMII / F without performing the conversion process of the image display specification.

  In this case, since the display device 2 connected to the HDM II / F cannot display an image according to the supplied image data, the display device 2 is connected through the display system I / F 70 of the reproduction system part and through the HDM II / F. The reason why the image cannot be reproduced in the display device 2 is notified. A message for notifying the reason why an image cannot be reproduced in the display device 2 connected through the HDMII / F is formed and supplied to the display device 2 through the HDMII / F, and the message is displayed on the display screen of the display device 2. May be displayed.

  On the other hand, if it is determined that no display device is connected to the output terminal for image data other than HDMII / F, a display device that can display an image according to the image data read from the storage 40 is connected. As in the case of the digital video camera 1 according to the first embodiment described with reference to FIGS. 1 to 3, the reproduction of the image data is abandoned and the image data to be reproduced next is recorded. The read position is positioned at the head of the area where the image is recorded, and another image data is reproduced.

  In this case, a message indicating that skipping is being performed (reading position is being changed) is formed through the display system I / F 70 or a message notifying that skipping is being formed, and this is displayed on the display device via the HDMII / F. 2 is displayed, and the message is displayed on the display screen of the display device 2, so that there is image data that cannot be reproduced, and an image that cannot be reproduced by notifying the user that this is skipped. When data exists, this is not mistaken for a device failure.

[Operation during playback (when storage is a magnetic tape)]
Next, as described with reference to FIG. 5, in the digital video camera 4 of the second embodiment including the HDMI connector unit 62 and the image output terminal out other than the HDMI standard, it is recorded in the storage 40. The reproduction processing of the existing image data will be described with reference to the flowchart of FIG. The flowchart shown in FIG. 6 will be described assuming that the storage 40 uses a magnetic tape as in the case of the flowchart shown in FIG. 3 of the first embodiment.

  In FIG. 6, the processing from step S301 to step S309 is the same as the processing from step S101 to step S109 shown in FIG. In FIG. 6, the processes from step S312 to step S314 are performed in the same manner as the processes from step S110 to step S112 shown in FIG.

  As shown in FIG. 6, in the digital video camera 4 of the second embodiment, in step S305, information already acquired by the system control unit 90 (EDID information from the display device 2, digital video) is displayed. This is a process for determining whether or not the image display specification α of the output target image data can be converted based on the display specification conversion pattern held by the camera 4 and the output target image display specification α).

  In the determination process of step S305, when it is determined that the conversion of the image display specification α of the image data to be output is impossible, the system control unit 90 connects the display device to an output terminal for image data other than HDMII / F. It is determined whether it has been performed (step S310).

  The process of step S310 is performed when the display device is connected to the image output terminal of the own device and the difference in electrical characteristics that changes between when the display device is not connected or when the display device is connected. It is possible to determine the presence or absence of connection by using a mechanical mechanism that is “on” and “off” when not connected, or various methods such as signal transmission / reception. To be.

  When it is determined in step S310 that the display device is connected to an output terminal for image data other than HDM II / F, the system control unit 90 connects to the display meter I / F 70 of the own device using an HDMI connection. The reason why the image is not displayed is displayed on the displayed display device 2 (step S311), and the processing from step S307 is performed.

  It should be noted that after the process of step S 311, before the process of step S 307, a display message for notifying why the image is not displayed on the HDMI-connected display device 2 is formed, and this is transmitted through the HDMI transmitter 61 and the HDMI connector unit 62 It is also possible to supply to the display device 2 connected thereto and display the message on the display screen of the display device 2.

  On the other hand, if it is determined in step S310 that the display device is not connected to an output terminal for image data other than HDM II / F, the system control unit 90 performs the processing in steps S312 to S314 to generate an image. After the process of changing the data reading position is performed to change the image data to be output, the process of newly outputting the image data as the output target is repeated.

  As described above, in the digital video camera 4, when reproducing the image data recorded and held in the storage 40, basically, for the image data that can be displayed on the display device 2 connected by HDMI, The image data is supplied to the display device 2 through the HDMII / F and reproduced, and simultaneously supplied to the display device through the image output terminal out other than the HDMII / F and reproduced.

  However, image data that cannot be displayed on the display device 2 connected by HDMI is reproduced on the display 5 when the display device 5 is connected to an image output terminal other than the HDMII / F. When a display device is not connected to an image output terminal other than the HDMII / F, it is impossible to reproduce an image according to the image data, so that another image data is output.

  As a result, when a display device is connected to an image output terminal other than the HDMII / F, it is read from the storage without wasting the display possibility of an image according to the image data on the display device. Image data can be displayed as much as possible.

  The process shown in FIG. 6 is an image display specification conversion process in the case of image data that can display an image on the display device 2 connected through the HDMI connector unit 62 by converting the image display specification. In this way, the display device 2 is supplied. That is, priority is given to image display on the display device 2 connected through the HDMI connector section 62 over the display device 5 connected through the image output terminal out which is an output terminal of the component image signal.

  However, it is not limited to this. Conversely, it is also possible to give priority to image display on the display device 5 connected through the image output terminal out which is an output terminal of the component image signal, rather than the display device 2 connected through the HDMI connector unit 62. is there.

  Specifically, in the flowchart shown in FIG. 6, the determination process in step S305 (determination process for determining whether the image display specification of the image data to be output can be converted), and the image display specification conversion process in step S306. In the meantime, a process for determining whether or not a display device is connected to an output terminal for image data other than HDMII / F, similar to the determination process in step S310, is added.

  If it is determined in the added determination process that no display device is connected to the output terminal for image data other than HDMII / F, the process proceeds to step S306 and the display device 2 connected through the HDMI connector unit 62 is connected. Display the image.

  Conversely, when it is determined in the added determination process that a display device is connected to an output terminal for image data other than HDII / F, the process proceeds to step S311 and the display device connected through the HDMI connector unit 62 2 is abandoned and the image is displayed through the display device 5 connected to the image output terminal out.

  By doing in this way, it is possible to give priority to image display on the display device 5 connected through the image output terminal out which is the output terminal of the component image signal.

  In addition, whichever of the display device 2 connected through the HDMI connector unit 62 and the display device 5 connected through the image output terminal out which is an output terminal of the component image signal is given priority, it is optimal for HDMI connection. It is possible to avoid that the conversion processing of the image display specification and the skip processing of the image data adversely affect other connections.

  For example, the image data read from the storage 40 should be able to be displayed entirely on the display device 5 connected to the image output terminal out, but the image data is suddenly skipped in some places without giving a reason, giving a sense of incongruity. Inconveniences such as these can be prevented.

  When image data having a displayable video frequency and an impossible video frequency is recorded in the storage 40, fast-forwarding or skipping is performed as described above. Is also fixed to a video frequency that can be displayed on the display device 2.

  For example, when connecting to a display device that can process only 60 Hz and playing back storage with a mixture of 60 Hz and 50 Hz signals, the 50 Hz signal part is skipped, but the synchronization signal is fixed at 60 Hz. Thus, the display device does not disturb the display even during fast-forwarding. For this reason, during skipping, a message is synthesized on a black image or a blue image using a so-called OSD (On Screen Display) technique and supplied to the HDMI-connected display device 2 as described above. The display message can be displayed on the display device 2 and provided to the user.

  Of course, it is also possible to give notification that image data skipping processing is in progress, such as during fast-forwarding or skipping. That is, one or both of a display message and a voice message are supplied to the HDMI-connected display device 2, and the processing status of the image data is notified through one or both of the display message and the voice message through the display device 2. To be able to.

  In the second embodiment, the display device 2 connected by HDMI and the display device 5 connected through an image output terminal other than the HDMII / F are described as an example. It is not limited to. The present invention can also be applied when there are a plurality of HDMII / Fs.

  That is, when there are a plurality of HDMII / Fs, the display specifications (device display specifications) that can be handled may be different for each display device connected through each HDMII / F. In such a case, the main display device is determined, and even if the image data of the image display specification that cannot be displayed on the main display device can be displayed on other display devices, it is skipped. Alternatively, it may be configured to be supplied to each display device as it is or after being converted into an image display specification that can be displayed on another display device.

  In this case, each display device is HDMI-connected, and the EDID information from each display device can identify the display device that cannot display an image. , It is possible to display a display message notifying this and to emit a voice message.

  If the storage is a disk recording medium such as a DVD or a hard disk, the processing from step S312 to step S314 shown in FIG. 6 is the same as the processing from step S210 to step S212 of the processing shown in FIG. Will be done.

[Third Embodiment]
In the digital video cameras 1 and 4 according to the first and second embodiments described above, a process of appropriately determining whether or not to skip the output target is performed according to the connected display device or the like, and the process of skipping the reading is performed. When it is done or when it is done, the fact is notified to the user. However, notification of skipping of image data can be performed in advance.

  In the digital video camera 6 according to the third embodiment, a recorded image is recorded when image data having different image display specifications is recorded in the storage in which the image data to be reproduced is recorded. For each piece of data, the image data to be reproduced is composed of an image display specification, information indicating whether or not display is possible on a connected display device, and information indicating what processing is performed at the time of reproduction. A reproduction schedule list that is a list list can be generated and displayed.

  Even in the case of the digital video camera 4 of the third embodiment, except that a component output terminal is provided in the reproduction system part and a memory 95 is provided in the system control unit 90, Both the recording system part and the playback system part are configured in the same manner as the digital video camera 1 of the first embodiment shown in FIG. Therefore, in the following, a configuration example of the reproduction system portion of the digital video camera 6 will be shown, and the operation will be described in detail.

[Operation of playback system and display device]
FIG. 7 is a block diagram for explaining a connection relationship between the reproduction system portion of the digital video camera 6 of the third embodiment and a display device to which image data is supplied. 7, the playback system portion of the digital video camera 1 of the first embodiment shown in FIG. 2 or the playback system portion of the digital video camera 1 of the second embodiment shown in FIG. The same reference numerals are given to the parts configured in the above, and detailed description of those parts is omitted.

  Briefly, as can be seen by comparing FIG. 7 and FIG. 2, the playback system portion of the digital video camera 6 of the third embodiment shown in FIG. 7 and the first embodiment shown in FIG. In the reproduction system portion of the digital video camera 1, an image output terminal out for component image signals is provided, the display device 5 is connected through the image output terminal out, and a memory 95 is provided in the system control unit 90. Different points are provided.

  Further, as can be seen by comparing FIG. 7 and FIG. 5, the playback system portion of the digital video camera 6 of the third embodiment shown in FIG. 7 and the digital of the second embodiment shown in FIG. The playback system portion of the video camera 1 is different in that a memory 95 is provided in the system control unit 90.

  Here, the memory 95 newly provided in the system control unit 90 can store and hold image display specifications and other information for each of the image data stored and held in the storage 40. A later-described reproduction schedule list is formed.

  In the case of the digital video camera 6 of this embodiment, when image data is recorded in the storage, an image display specification is acquired for each image data, and the acquired image display specification is stored in the memory 95. . That is, as shown in FIG. 1, since the system control unit 90 knows the image display specifications for the image data acquired by photographing through the camera unit 12, the CPU 91 of the system control unit 90 has its own memory. Record in 95.

  Further, for image data supplied through the external input unit 11 and recorded in the storage 40 through the recording system, the system control unit 90 is analyzed by information added to the image data or by analyzing the image data. Acquires the image display specification to be recorded and records it in the memory 95.

  Of course, the present invention is not limited to acquiring and recording image display specifications when recording image data. For example, for each piece of image data recorded and held in the storage 40 at an appropriate timing, an image display specification is acquired based on information added to each image data or by analyzing each image data. Then, this may be recorded in the memory 95 so as to have a correspondence relationship with the image data stored and held in the storage 40.

  Further, for each piece of image data stored and held in the storage 40, an image display specification can be input through the operation reception I / F 80 and recorded in the memory 95.

  The system control 90 then displays the image display specifications stored in the memory 95 for each image data recorded in the storage 40 acquired as described above, and the digital video camera according to the first and second embodiments. As in the case of the above, the EDID information of the display apparatus 2 acquired by the system control unit 901 through the HDMII / F DDC line and temporarily stored in the RAM 93 and the digital video camera 6 of the third embodiment in advance. The reproduction schedule list is generated based on the display specification conversion pattern determined and registered in advance in the nonvolatile memory 94.

  FIG. 8 is a diagram for explaining generation of a reproduction schedule list. FIG. 8A is a diagram for describing the image display specifications of the image data recorded and held in the storage 90 recorded in the memory 95 when the image data is recorded, as described above. In FIG. 8A, (1), (2),... Correspond to the order in which the image data recorded in the storage 40 is recorded. That is, the image display specification of (1) is the image display specification of the image data recorded first in the storage 40, and the image display specification of (2) is recorded second in the storage 40. This indicates that the image data has an image display specification.

  FIG. 8B is a diagram for explaining the device display specifications of the display device 2 acquired from the display device 2 as EDID information and stored in the RAM 93. That is, it is shown that the display device 2 can display the image data of the four image display specifications shown in FIG. 8B.

  FIG. 8C is a diagram for explaining a conversion pattern (display specification conversion pattern) of image display specifications of image data that is possible in the digital video camera 6 of the third embodiment. In the digital video camera 6 of the third embodiment, as shown in FIG. 8C, (1) conversion from 1920 × 1080p @ 60 Hz to 1920 × 1080i @ 60 Hz, and (2) from 1920 × 1080i @ 60 Hz It is shown that conversion to 720 × 480i @ 60 Hz can be possible, and (3) the image display specification can be output as it is without conversion.

  Based on the information shown in FIGS. 8A, 8B, and 8C, a reproduction schedule list as shown in FIG. 8D is formed. That is, each image display specification of the image data stored and held in the storage 40 shown in FIG. 8A is compared with the device display specification of the display device 2 shown in FIG. 8B.

  Here, in the case of the image display specification that matches the device display specification of the display device 2 shown in FIG. 8B, the image data of the image display specification does not need to be converted, and the image data is used as it is. It can be seen that it can be output and displayed on the display device 2 and can be reproduced and output as it is on its own device.

  Further, in the case of an image display specification that does not match the device display specification of the display device 2 shown in FIG. 8B, the display specification conversion pattern of FIG. 8C is referred to and it is confirmed whether or not it can be converted. When conversion is possible, when the converted image display specification matches the device display specification of the display device 2 shown in FIG. 8B, the image data is displayed on the display device 2 after conversion of the image display specification. It can be seen that the image display specification can be converted and output by the own device.

  Further, it is a case of an image display specification that does not match the device display specification of the display device 2 shown in FIG. 8B, and confirms whether or not it can be converted by referring to the display specification conversion pattern of FIG. 8C. However, when conversion is impossible, or even if conversion is possible, the converted image display specification is not compatible with the display device 2 (there is nothing that matches the device display specification shown in FIG. 8B). )), It is impossible to display (display is impossible), and it can be understood that it becomes a skip target.

  Therefore, when each of the image data having the image display specifications (1) to (4) shown in FIG. 8A is verified, (1) the image data having the image display specifications of 1920 × 1080p @ 60 Hz is displayed on the corresponding device display. Since the specification does not exist in FIG. 8B, referring to the display specification conversion pattern of FIG. 8C, it is possible to convert to the image display specification of 1920 × 1080i @ 60 Hz by the pattern of (1) of FIG. 8C. Since it also exists in the device display specification shown in FIG. 8B, it can be displayed on the display device 2 (monitor) as shown in FIG. 8D, but it is shown that the image display specification is converted in its own device. It is.

  Also, (2) image data having an image display specification of 1920 × 1080i @ 60 Hz can be displayed on the display device 2 (monitor) as shown in FIG. 8D because the corresponding device display specification exists in FIG. 8B. It can be seen that the image is reproduced and output as it is without conversion of the image display specification in the own device.

  Also, (3) image data having an image display specification of 1920 × 1080i @ 50 Hz does not have a corresponding device display specification in FIG. 8B, and further corresponds even if the display specification conversion pattern in FIG. 8C is referred to. Since there is no pattern, conversion is impossible, and as shown in FIG. 8D, it is impossible to display on the display device 2 (monitor), and it is indicated that the device is a target of skipping (skipping).

  Also, (4) image data having an image display specification of 1920 × 1080i @ 60 Hz is the same image display specification as in (2) of FIG. 8A, and the corresponding device display specification exists in FIG. 8B. As shown in FIG. 8D, it can be displayed on the display device 2 (monitor), and it can be seen that the image is reproduced and output as it is without conversion of the image display specification in the own device.

  Prior to the reproduction of the image data, the system control unit 90 forms the reproduction schedule list shown in FIG. 8D in the memory 95 and displays it on the display screen of the display type I / F included in the reproduction system portion. Provide to users. Alternatively, prior to the reproduction of the image data, the system control unit 90 forms the reproduction schedule list shown in FIG. 8D in the memory 95, and the display device 2 connected thereto through the HDMI transmitter 61 and the HDMI connector unit 62 The reproduction schedule list shown in FIG. 8D can also be displayed on the display screen of the display device 2.

  As shown in FIG. 8D, in the reproduction schedule list, for each image data stored and held in the storage 40, whether the image display specifications, HDMI connection monitor (display device 2) can be displayed, or cannot be displayed. In addition, the processing contents at the time of reproduction of the image data in the own device (digital video camera) are displayed. However, it is not limited to this.

  For example, when there is audio data accompanying the image data, the frequency information of the audio data, channel information, and time code information about the image data (for example, indicating the total reproduction time of the image data) It is possible to add various information such as information. In addition, when the playback device, that is, the playback system part of the digital video camera, operates, not only whether to skip the image data, but also the user can change manually (manually) It is also possible to make it possible.

[Reproduction schedule list creation process]
Next, a reproduction schedule list creation process performed in the digital video camera 6 according to the third embodiment will be described with reference to the flowcharts shown in FIGS. FIG. 9 and FIG. 10 are flowcharts for explaining a reproduction schedule list creation process executed in the digital video camera 6 according to the third embodiment. The processes shown in FIGS. 9 and 10 are mainly executed by the system control unit 90 when an instruction to create a reproduction schedule list is received from the user through the operation reception I / F 80.

  First, upon receiving an instruction to create a reproduction schedule list from the user through the operation reception I / F 80, the system control unit 90 executes the processes shown in FIGS. 9 and 10, and is first stored in the storage 40. The image display specification for every image data is grasped (step S401).

  Specifically, as described above, the processing in step S401 is performed when the image display specifications of the image data to be recorded are grasped and recorded in the memory 95 when the image data is recorded. In the case where the image display specification for each image data stored in the storage 40 is not stored in the memory 95, the processing for grasping the image display specification for each image data is referred to. This is processing for detecting (acquiring) an image display specification for each image data recorded in the storage 40 and recording it in the memory 95 to grasp the image display specification of each image data. That is, step S401 is a process of grasping the image display specification for each image data recorded in the storage 40 as shown in FIG. 8A.

  Then, the system control unit 90 specifies the first image data to be included in the reproduction schedule list among the image data stored and held in the storage 40 (step S402), and grasps it in step S401 of the specified image data. As described in the first embodiment, the image display specifications are information temporarily stored in the RAM 93, and the apparatus display specifications based on the EDID information previously obtained through the DDC line of the HDMII / F. Compared with FIG. 8B (step S403).

  In response to the result of the comparison process in step S403, the system control unit 90 determines whether there is a device display specification that matches the image display specification of the specified image data (step S404). That is, the determination process in step S404 is a process for determining whether or not conversion of image display specifications is necessary when the specified image data is output.

  If it is determined that the conversion of the image display specification is not necessary as a result of the determination process in step S404, the image data is determined to be “displayable” on the display device 2 connected by HDMI (step S405). In the processing in the own device, it is determined that the image data is “reproduced” and output as it is without conversion of the image display specification (step S406).

  Through the processing up to step S406, the “image display specification” of the specified image data is grasped, the image data is “displayable” on the display device 2, and the image data is accompanied by conversion of the image display specification. Instead, it is determined that it can be “reproduced” and output, and the result is held in association with the image display specification corresponding to the memory 95.

  Then, the system control unit 90 determines whether or not the specified image data is the last image data stored and held in the storage 40 (step S407). Based on the determination result of FIG. 8D, each image data stored and held in the storage 40 includes image display specifications, whether or not display is possible on the display device 2, and processing contents in the own device (digital video camera). The reproduction schedule list shown in FIG. 9 is formed and output (step S408), and the processes shown in FIGS. 9 and 10 are terminated.

  Note that the playback schedule list output processing in step S408 is output through the display system I / F 70 of the playback system portion of the digital video camera, or the playback schedule list shown in FIG. 8D is displayed through the HDMI transmitter 61 and the HDMI connector section 62. This is a process of supplying to the device 2 and displaying it on the display screen of the display device 2. Of course, the reproduction schedule list may be displayed and provided to the user through both the display system I / F 70 of the own device and the display device 2.

  When determining that the specified image data is not the last image data stored and held in the storage 40 in the determination process of step S407, the system control unit 90 specifies the image data to be processed next. (Step S409), the processing from Step S403 is repeated, and the image display specification of the image data newly processed, whether it can be displayed on the display device 2, and the processing in its own device (digital video camera) Perform processing to identify the contents.

  If it is determined in step S404 that there is no device display specification that matches the image display specification of the specified image data, the process proceeds to the process shown in FIG. 10, and as described above, the digital video camera 6 By referring to the display specification conversion pattern (FIG. 8C) registered in advance in the nonvolatile memory 94 and the device display specification grasped by the EDID information from the display device 2 as described above, the specified image data It is checked whether or not the image display specification can be converted into one that can be displayed on the display device 2 (step S410).

  Then, the system control unit 90 determines whether or not the image display specification can be converted for the specified image data based on the investigation result in step S410, that is, if the image display specification is converted and supplied to the display device 2, It is determined whether display is possible on the display device 2 (step S411).

  In the determination process of step S411, if the image display specification is converted and supplied to the display device 2, when it is determined that the image can be displayed on the display device 2, the system control unit 90 is HDMI-connected to the image data. The display device 2 determines that “display is possible” (step S412), and the process in the own apparatus determines that the image data is output after conversion of the image display specifications (step S413).

  The results specified by the processes in steps S412 and S413 are also held in association with the image display specifications corresponding to the memory 95. Thereafter, the processing from step S407 shown in FIG. 9 is repeated.

  In the determination process of step S411, when it is determined that the image display specification cannot be converted, or even if the image display specification is converted, the display device 2 cannot convert the image display specification, the system control unit 90 It is determined that the image data is “not displayable” on the display device 2 connected by HDMI (step S414), and the processing in the own device is determined to perform a process of skipping (skipping) the image data. (Step S415).

  The results specified by the processes in steps S414 and S415 are also held in association with the image display specifications corresponding to the memory 95. Thereafter, the processing from step S407 shown in FIG. 9 is repeated.

  As described above, through the processing shown in FIGS. 9 and 10, for each image data stored and held in the storage 40, whether the image display specifications and whether or not display is possible on the display device 2 connected by HDMI is determined. The reproduction schedule list (FIG. 8D) including these pieces of information can be formed in the memory 95, for example, and provided to the user.

  As a result, the user can not only grasp the signal recorded in the storage 40 but also at a glance whether it is reflected on the monitor connected to HDMI or whether it is set to skip. Thus, user confusion can be avoided and convenience as a playback device is improved.

  In the third embodiment, the reproduction schedule list for reproducible image data is formed in the dedicated memory 95. However, the present invention is not limited to this. You may make it form in RAM93 and the non-volatile memory 94 which are mainly used as a work area.

  In addition, instead of forming the reproduction schedule list in the memory of the system control unit 90, the image display specifications of the image data stored and held in the storage are stored and held in a predetermined storage area of the storage 40. A reproduction schedule list may be formed in the storage so that it can be read and displayed at an appropriate timing. This case is effective when there is a large amount of image data stored and held in the storage 40.

  Further, as image data is added to or deleted from the storage 40 and image data is deleted from the storage 40, the image display specifications for each image data are added or deleted, and stored in the storage 40. In association with image data, image display specifications can be managed for each image data without causing inconsistency, and a reproduction schedule list can be formed. This means that even if the recording medium that stores and holds the image display specifications and forms the reproduction schedule list is the storage 40 that stores and holds image data, it is a memory other than the storage 40. Is the same.

  In the above-described embodiment, each of the first, second, and third embodiments has been described. However, the functions described in the first embodiment and the third embodiment are described. Of course, it is possible to configure a digital video camera having the functions described above, or to configure a digital video camera having the functions described in the second embodiment and the functions described in the third embodiment. is there.

  In the above-described embodiment, the case where the present invention is applied to the playback system of a digital video camera has been described as an example. However, the present invention is not limited to this. For example, an optical disk playback device or recording / playback device such as a DVD, a magneto-optical disk playback device or recording / playback device such as an MD (Mini Disc (registered trademark)), a VTR (Video Tape Recorder), a hard disk playback device or a recording / playback The present invention can be applied to various reproducing apparatuses and recording / reproducing apparatuses that use various recording media as recording media, such as apparatuses, semiconductor memory reproducing apparatuses and recording / reproducing apparatuses.

  As can be seen from the first, second, and third embodiments described above, a plurality of image data with different display specifications are recorded in one storage, and the playback device and the display device are HDMI-connected. In this case, it is not necessary to manage where the user can play back because the player knows whether or not the playback device itself includes a portion that cannot be displayed on the display device, and performs reading from the storage in an optimal manner.

  In addition, when a plurality of image data with different display specifications are recorded in one storage, when the data is played back, the playback device interprets the recorded signal format and displays it in an unsupported recording area that does not appear on the display device. Upon entering, the playback device itself changes the reading speed and position from the storage and performs fast forward (FF) or skip, so that the user does not need to perform fast forward or skip operations.

  In addition, when the playback device itself automatically performs operations such as fast-forwarding and skipping, in order to notify the user that the operation has been performed using a display system I / F such as an LED, It can avoid the confusion of general users such as “I suddenly disappeared”.

  Also, when connected to a plurality of external devices using a plurality of interfaces, it is prohibited to change the reading speed and position from the storage. However, even in such a case, the display system I / F such as the LED of the playback apparatus itself notifies that “there is a possibility that a signal that cannot be displayed by any one of the connections is output”. Yes, so you do n’t get confused.

It is a block diagram for demonstrating the digital video camera of 1st Embodiment to which one Embodiment of this invention was applied. It is a block diagram for demonstrating the reproduction | regeneration system part of the digital video camera 1 of 1st Embodiment shown in FIG. 6 is a flowchart for explaining an operation at the time of reproduction of the reproduction system portion of the first embodiment when the storage is a tape medium. 6 is a flowchart for explaining an operation at the time of reproduction of the reproduction system portion of the first embodiment when the storage is a disk medium. It is a block diagram for demonstrating the reproduction system part of the digital video camera 4 of 2nd Embodiment. It is a flowchart for demonstrating the operation | movement at the time of reproduction | regeneration of the reproduction | regeneration system part of 2nd Embodiment. It is a block diagram for demonstrating the reproducing part of the digital video camera 6 of 3rd Embodiment. It is a figure for demonstrating the production | generation of a reproduction schedule list. It is a flowchart for demonstrating the production | generation process of the reproduction schedule list | wrist performed in the digital video camera 6 of 3rd Embodiment. It is a flowchart following FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Digital video camera, 11 ... External input part, 12 ... Camera part, SW1 ... Switch circuit, 20 ... Baseband process part, 31 ... Encoder, 32 ... Recording part, SW2 ... Switch circuit, 40 ... Storage, 51 ... Reading , 52 ... Decoder, 60 ... Signal output I / F, 70 ... Display system I / F, 80 ... Operation reception I / F, 90 ... System control unit, 51 ... Read-out unit, 52 ... Decoder, 21 ... Resolution discrimination unit 22 ... Resolution converter, 61 ... HDMI transmitter, 62 ... HDMI connector, out ... Image output terminal, 91 ... CPU, 92 ... ROM, 93 ... RAM, 94 ... Non-volatile memory, 95 ... Memory, 2 ... Display device , 201 ... HDMI connector part, 202 ... HDMI control part, 203 ... Memory, 3 ... Digital I / F cable, 4 ... Digital video Mera, 5 ... display equipment

Claims (6)

A first output end of image data supplied to the display device;
An input end of information from the display device;
Reading means for reading image data to be output from the recording medium;
Discriminating means for discriminating an image display specification which is a display specification of the image data to be output read from the recording medium by the reading means;
An acquisition means for acquiring, through the input terminal, a device display specification that is a display specification of image data that can be displayed on the display device;
Display specification conversion means for converting an image display specification of image data to be output from the own device in accordance with one or more predetermined display specification conversion patterns that can be processed by the own device;
The image data to be output based on the image display specification determined by the determination unit, the device display specification acquired by the acquisition unit, and one or more predetermined display specification conversion patterns. However, whether or not the image data can be displayed on the display device without converting the image display specification or by converting the image display specification through the display specification conversion means. Discrimination means;
In the display possibility determination unit, when it is determined that the image data to be output is an image that cannot be displayed on the display device, the read unit is controlled to read different image data. An image reproducing apparatus comprising: changing means for changing a reading position of image data from the recording medium. The image reproduction device according to claim 1,
When the display enable / disable determining means determines that the image data to be output is an image that cannot be displayed on the display device, the image data in a format different from that of the first output terminal is output. Other connection determining means for determining whether or not another display device is connected to the second output end;
When the other connection determining means determines that a display device is connected to the second output end, it notifies that the display device connected to the first output end cannot display an image. A notification means, and
When the other connection determining means determines that a display device is connected to the second output terminal, the changing means does not change the reading position of the image data from the recording medium. An image reproducing apparatus. The image reproduction device according to claim 1,
Detecting means for detecting each image display specification of one or more image data recorded on the recording medium or recorded on the recording medium;
Each image display specification of the one or more image data detected by the detection means, the device display specification acquired by the acquisition means, and one or more predetermined ones that can be processed by the own device Based on the display specification conversion pattern, for each of the one or more image data recorded on the recording medium, at least a list indicating whether or not it is reproducible and the processing content in its own device A list forming means for forming
An image reproducing apparatus comprising: output means for outputting the list formed in the list forming means. An image used in an image reproducing apparatus that includes a first output terminal for image data supplied to a display device and an input terminal for information from the display device, and that reads and outputs image data recorded on a recording medium A playback method,
A reading step of reading out image data to be output from the recording medium;
A determination step of determining an image display specification that is a display specification of the image data to be output read from the recording medium in the reading step;
An acquisition step of acquiring, through the input terminal, a device display specification that is a display specification of image data that can be displayed on the display device;
Based on the image display specification determined in the determination step, the device display specification acquired in the acquisition step, and one or more predetermined display specification conversion patterns that can be processed by the own device, Whether the image data is image data that can be displayed on the display device without converting the image display specification or by converting the image display specification through the display specification conversion means. A display possibility determination step to be performed;
In the display possibility determination step, when it is determined that the image data to be output cannot be displayed on the display device, the image data is read from the recording medium so as to read different image data. An image reproducing method comprising: a changing step for changing a position. The image reproduction method according to claim 4,
In the display possibility determination step, when it is determined that the image data to be output is an image that cannot be displayed on the display device, the first output terminal outputs image data in a format different from that of the first output terminal. Another connection determination step of determining whether or not another display device is connected to the output terminal of 2;
A notification for notifying that an image cannot be displayed on the display device connected to the first output terminal when it is determined in the other connection determination step that a display device is connected to the second output terminal. Steps and
In the other connection determining step, when it is determined that a display device is connected to the second output terminal, the changing step does not change the reading position of the image data from the recording medium. Image playback method. The image reproduction method according to claim 4,
A detection step of detecting each image display specification of one or more image data recorded on the recording medium or recorded on the recording medium;
Each image display specification of the one or more image data detected in the detection step, the device display specification acquired in the acquisition step, and one or more predetermined display specifications that can be processed in the own device Based on the conversion pattern, for each of the one or more image data recorded on the recording medium, a list indicating at least whether or not it is reproducible and the processing contents in the own device is formed. A list-forming step to
An image reproducing method comprising: an output step of outputting the list formed in the list forming step.

Images