JP5451852B2 - VIDEO PROCESSING DEVICE AND ITS CONTROL METHOD, VIDEO OUTPUT DEVICE AND ITS CONTROL METHOD - Google Patents

Description

The present invention relates to a video processing apparatus and its control method, and a video output apparatus and its control method, and more particularly to a setting technique for a data transfer method between the video output apparatus and the video processing apparatus.

  An increasing number of users connect a video output device such as a digital camera or a video camera to a video display device such as a television to view content captured by the camera. In order to realize such a function, an interface connecting apparatuses supports a plurality of transfer protocols such as file transfer and stream transfer, and performs communication while switching a protocol to be used as necessary.

  The fact that the device interface supports multiple transfer protocols has the advantage that there are many options for the user, but it also means that one of them must be selected. In addition, there is a problem that selection is difficult for a user who is not familiar with the transfer protocol.

  Patent Document 1 discloses a method of switching a transfer protocol according to a processing application selected by a user on an application in a configuration in which a storage device and a content display device are connected. Specifically, the stream transfer protocol is selected when the user requests content reproduction, and the file transfer protocol is selected during the drag and drop operation.

  Further, in Patent Document 2, when the video / audio reproduction device can output both analog signals / digital signals, the recommended output is determined from the analog / digital output valid state and the OSD output state of the video / audio reproduction device. Techniques for determining are disclosed.

JP 2006-236138 A JP 2003-304559 A

  In the technique disclosed in Patent Document 1, a protocol selected according to a user operation is fixed. For example, when reproducing content, the stream transfer protocol is always selected.

Therefore, a problem may occur depending on the type of the operated data. For example, when a user who wants to view video content using a viewer application built in a television performs a drag-and-drop operation on image data in a format not supported by the viewer application, the user may view the image data. Can not.
This problem cannot be solved even by the technique disclosed in Patent Document 2.

The present invention has been made in view of the above-described problems of the prior art. A video processing apparatus capable of automatically selecting an appropriate transfer protocol when transferring content data, a control method thereof, and video output An object is to provide a device and a control method thereof.

That is, the above-described object is a video processing device that receives content data from a video output device, and determines whether or not the video processing device can decode the content data received from the video output device, and the determination result based on the transfer protocol used for the reception of the content data, a first transfer protocol for transferring the image processing apparatus the decrypted content data in the video output device from the image output device, are decoded when the picture output device Selecting means for selecting a plurality of transfer protocols including a second transfer protocol for transferring non- content data from the video output device to the video processing device, and outputting the content data using the transfer protocol selected by the selection means Receiving means for receiving from the device, the selecting means for decoding the content data by the video processing device If it is determined not to be possible, it is achieved by the image processing apparatus characterized by selecting a first transfer protocol.

In addition, the above-described object is a video output device that outputs content data to a video processing device, and determines whether or not the content data output to the video processing device can be decoded by the video processing device. based on the transfer protocol to be used for output of the content data, a first transfer protocol to be output to the image processing device the decrypted content data in the video output device from the image output device, are decoded when the picture output device video processing content data by using a selection means for selecting from among a plurality of transfer protocols, a transfer protocol selected by the selection means and a second transport protocol to be output to the video processing device from the image output device without the content data and output means for outputting the apparatus, displayable character / graphic image together with the image based on the content data And a generation means for generating, selecting means, if the content data is video processing apparatus is determined not decodable, selecting a first transfer protocol, the video processing device can decrypt the content data If it is determined, the first transfer protocol or the second transfer protocol is selected according to the comparison result between the character / graphic image processing performance of the video processing device and the character / graphic image processing performance of the generating means. This is also achieved by a video output device characterized by the above.

Further, the above-described object is a method for controlling a video processing apparatus that receives content data from a video output apparatus, and whether or not the selection means can decode the content data received from the video output apparatus by the video processing apparatus. or determines, based on the determination result, the transfer protocol to be used for reception of the content data, a first transfer protocol for transferring the image processing apparatus the decrypted content data in the video output device from a video output device, film images a selection step of selecting from among a plurality of transport protocols and a second transport protocol for transferring the image processing apparatus content data that is not decoded by the output device from the image output device, the receiving means, is selected in the selection step A receiving step for receiving content data from the video output device using the selected transfer protocol. Selection means In, if the content data is video processing apparatus is determined not decodable, also achieved by a control method of a video processing apparatus and selects the first transfer protocol.

Another object of the present invention is to provide a video output device control method for outputting content data to a video processing device, wherein the video output device generates a character / graphic image that can be displayed together with an image based on the content data. And the control method determines whether the video processing apparatus can decode the content data to be output to the video processing apparatus, and the transfer protocol used to output the content data based on the determination result. and a first transfer protocol to be output to the image processing device the decrypted content data in the video output device from a video output device, the content data that is not decoded when the picture output apparatus to the video processing device from the image output device a selection step of selecting from among a plurality of transport protocols and a second transport protocol to be output, the output unit, selection Comprising an output step of outputting the content data to the image processing apparatus using a transfer protocol selected by the stage, the selecting means in the selection step, it is determined the previous SL content data with the video processing device is not decodable If the first transfer protocol is selected and it is determined that the content processing data can be decoded by the video processing device, the character / graphic image processing performance of the video processing device and the character / graphic image processing of the generation unit are determined. It is also achieved by a control method for a video output apparatus, which compares performance and selects the first transfer protocol or the second transfer protocol according to the comparison result .

With such a configuration, according to the present invention, it is possible to automatically select an appropriate transfer protocol when transferring content data from the video output device to the video processing device.

1 is a block diagram illustrating a configuration example of a content data transfer system configured by connecting a video display device and a video output device according to a first embodiment of the present invention in a communicable manner. It is a figure which shows the example of the display state in a video display apparatus when the video display apparatus and video output apparatus which concern on the 1st Embodiment of this invention are connected. It is a figure which shows the example of the starting setting screen of the viewer application which the video display apparatus concerning the 1st Embodiment of this invention displays. FIG. 5 is a sequence diagram illustrating a communication procedure when a transfer protocol is designated from the sink device 200 to the source device 100 in the first embodiment of the present invention. 5 is a flowchart illustrating details of a transfer method determination process in S413 of FIG. 6 is a flowchart illustrating details of a transfer method determination process based on GUI drawing performance performed in S506 of FIG. FIG. 10 is a sequence diagram illustrating a communication procedure when a transfer protocol is designated from the sink device 200 to the source device 100 in the second embodiment of the present invention.

(First embodiment)
Hereinafter, the present invention will be described in detail based on preferred and exemplary embodiments with reference to the accompanying drawings.
In addition, the specific component described in the embodiment, its function, shape, relative arrangement, and the like are examples unless there is a limited description, and are not intended to limit the scope of the present invention.

Figure 1 is a block diagram illustrating the video display apparatus as an example, an example of the configuration of a video output device and communicably connected to configured content data transfer system of the image processing apparatus according to a first embodiment of the present invention It is.
In FIG. 1, a video output device 100 (hereinafter referred to as “source side device”) and a video display device 200 (hereinafter referred to as “sink side device”) are connected via a connection line 300 so that they can communicate with each other.

In the present embodiment, the source device 100 is, for example, a camera. The control unit 101 of the source device 100 controls the following units in an integrated manner.
The imaging unit 102 performs A / D conversion on a lens for forming a subject image, an imaging device that converts the subject image formed by the lens into an electrical signal in pixel units, and an electrical signal output from the imaging device. An A / D converter that outputs pixel data is provided. Pixel data is input to the signal processing unit 103.

  The signal processing unit 103 includes a level correction unit, a white balance correction unit, a γ correction unit, a color processing unit, a color difference conversion unit, and an encoding / decoding unit. The signal processing unit 103 applies signal processing according to the setting to the pixel data input from the imaging unit 102 and stores the pixel data in the storage unit 104 via the bus 107 in the form of RAW data or JPEG data.

  The data format at the time of storage can be set by the user, for example, and can be set so that the content of the same scene shot is stored in a single data format, or the content of the same scene shot is a plurality of different data It is also possible to set to store in the format.

  The storage unit 104 includes a storage device, and manages storage location (directory) information, encoding method, frame frequency, data format information, image size information, and the like as content profiles for the stored content data.

  The GUI generation unit 105 draws content information such as a shooting date and time and a file name and character / graphic information such as an operation guide of the source device 100 or the sink device 200 on the GUI plane of the video memory. Then, it is synthesized with the video signal of the content decoded by the signal processing unit 103 and output to the external I / F unit 106.

The external I / F unit 106 performs stream transfer and file transfer with the sink device 200 based on a transfer control method described later.
In the present embodiment, the external I / F unit 106 outputs the video signal of the content designated by the user through the GUI generation unit 105 to the sink device 200 during stream transfer. Further, at the time of file transfer, the content data acquired from the storage unit 104 is output to the sink device 200 in units of files. When content data is transferred to the sink-side device 200 as a file, the sink-side device 200 needs to decrypt the content data.

  In the present embodiment, the sink-side device 200 is a digital television, and receives a broadcast signal and outputs a video signal and an audio signal, and a video signal and an audio signal acquired from the reception unit 201 as content data. And an accumulating unit 202 for accumulating.

  The external I / F unit 203 outputs an externally input video signal and audio signal input from the source side device 100 to the output unit 205 via the bus 212 during stream transfer. At the time of file transfer, data received from the source side device 100 is stored in the storage unit 202 as content data in a predetermined file unit.

The signal processing unit 204 acquires the video signal and audio signal of the content from the storage unit 202 and outputs them to the display unit 206 and the audio output unit 207 via the output unit 205.
The GUI generation unit 208 draws content information such as a shooting date and time and a file name and character / graphic information such as an operation guide of the sink device 200 on a GUI plane of the video memory of the sink device 200. Then, it is combined with the video signal of the content decoded by the signal processing unit 204 and output to the output unit 205. The GUI generation unit 208 also draws and outputs other GUIs such as display of program information received through the menu of the sink-side device 200 and broadcast signals.

  When the user operates the remote controller 209, the operation content is received by the operation input unit 210 and output to the control unit 211. The control unit 211 transmits the key operation of the remote controller 209 to the source device 100 via the connection line 300 as a pass-through command for controlling the source device at the time of stream transfer. On the other hand, at the time of file transfer, the key operation of the remote controller 209 is processed as a key operation for instructing the operation of the sink side device 200 or converted as a control command for requesting directory operation or search of the source side device 100 and connected. Transmit via line 300. The source device 100 executes appropriate processing according to the received command, and returns the processing result to the sink device 200 as necessary.

  In this embodiment, the external I / F units 106 and 203 support at least file transfer and stream transfer transfer protocols, but may support other protocols. Further, the connection line 300 is not limited to a wired line and may be wireless.

Next, an operation when the digital camera 100 as the source device in the present embodiment is connected to the digital television 200 as the sink device will be described.
When the user connects the external I / F units 106 and 203 with the connection line 300 to connect the source device 100 to the sink device 200, the GUI generation unit 208 of the sink device 200 operates the source device 100. Is displayed on the display unit 206 (FIG. 2). In the example of FIG. 2, the icon 213 is an icon for starting the operation of the source device 100.

  When the user performs an operation of pressing the icon 213 using the remote controller 209, the control unit 211 of the sink side device 200 is requested to start the source through the external I / F unit 203, assuming that the operation start of the source side device 100 is requested. A power-on request command is transmitted to the side device 100. In addition, the control unit 211 reads and activates a viewer application stored in the storage unit 202, for example. Further, the control unit 211 designates a transfer protocol for the source device 100 as will be described later.

In the present embodiment, the viewer application executable by the sink-side device 200 includes
(1) An external input viewer application for displaying and outputting an external input signal decoded by the source device 100 and input by stream transfer;
(2) an internal viewer application for decrypting the content data transferred to the file and stored in the storage unit 202 by the signal processing unit 204 and displaying it;
There shall be.

  Here, which viewer application is activated in response to the operation start request can be set by the user. For example, when the camera 100 as the source device is connected to the sink device 200 for the first time, the GUI generation unit 208 may display the setting screen on the display unit 206 and allow the user to set the setting screen. FIG. 3 is a diagram illustrating an example of a startup setting screen of the viewer application.

  The activation setting screen includes an auto 301, an external input viewer 302, and an internal viewer 303 as selectable items. The user can instruct the sink-side apparatus 200 by designating one of the items by moving the focus using the up and down keys of the remote controller and the determining operation. The explanation dialog 304 explains an outline of the setting item being focused, and the user can grasp the contents of each item in more detail with reference to the explanation dialog 304. The activation setting corresponding to the item specified from the activation setting screen is stored in the storage unit 202, for example.

  When the user designates the item “external input viewer”, when the user next connects the sink side device 200 and the source side device 100, the sink side device 200 activates the external input viewer application and Request stream transfer.

On the other hand, when “internal viewer” is designated, when the user next connects the sink side device 200 and the source side device 100, the sink side device 200 activates the internal viewer application to the source side device 100. Request file transfer.
Here, when “auto” is designated, an appropriate protocol is automatically determined as a transfer protocol to be requested to the source side apparatus 100 from the stream transfer protocol and the file transfer protocol according to the procedure described below. .

FIG. 4 is a sequence diagram for explaining a communication procedure when a transfer protocol is designated from the sink device 200 to the source device 100.
When the control unit 211 of the sink-side device 200 detects that the source-side device 100 is connected through the external I / F unit 203 (S401, S402), it transmits a command for checking the device type to the source-side device 100. (S403). Upon receiving this command, the control unit 101 of the source device 100 returns the device type as a response (S404). At this time, the control unit 211 can confirm that the device connected to the external I / F unit 203 is a camera.

  The control unit 211 further transmits a command for inquiring device information to the source-side device 100 (S405). In response to this, the control unit 101 returns device information such as the manufacturer, serial number, and firmware version as a response (S405). S406).

  Next, the control unit 211 inquires of the source device 100 about the corresponding transfer protocol (S407), and the control unit 101 returns the corresponding transfer protocol as a response (S408). Based on this response, the control unit 211 can confirm that the source-side device 100 supports stream transfer and file transfer.

  Next, the control unit 211 as a first acquisition unit inquires the source side device 100 about the profile of the stored content data (S409), and the control unit 101 reads the profile read from the storage unit 104 of each content data. Is returned as a response (S410). As described above, the content profile includes a content data encoding method, a file format as a storage format, the number of pixels, a frame frequency, and the like.

  Furthermore, the control unit 211 as the second acquisition unit inquires of the source device 100 about information related to the GUI drawing performance (S411). The control unit 101 of the source-side device 100 is configured to display information on the GUI generation unit 105 such as the width / height of the GUI plane, the bit depth of the display color, and the number of gradations of the original image data such as an icon to be drawn. Information related to is returned as a response (S412).

  When the processing so far is completed, the control unit 211 of the sink device 200 determines a transfer protocol based on the information acquired from the source device 100 (S413). Then, a viewer application for viewing content is activated, and the determined transfer protocol is designated to the source device 100. The process for determining the transfer method will be described later.

  When it is determined that the stream transfer protocol is used as the transfer protocol, the control unit 211 of the sink side device 200 activates the external input viewer application (S414), and displays and reproduces the content data stream-transferred from the source side device 100 (S415, S416).

  On the other hand, when it is determined that the file transfer protocol is to be used, the control unit 211 activates the internal viewer application (S417) and transmits a command for inquiring about directory information of content data stored in the storage unit 104 of the source device 100. (S418). Upon receiving this command, the control unit 101 returns the directory information of the content data as a response to the sink device 200 (S419).

  Based on the received directory information, the control unit 211 requests the source device 100 to transfer a file (S420). The control unit 101 of the source side apparatus 100 requested to transfer the file sequentially transfers the content data to the sink side apparatus 200 (S421).

FIG. 5 is a flowchart for explaining details of the transfer method determination processing in S413 of FIG.
The control unit 211 as the first determination unit determines whether or not the content data is in a format that can be decoded by the signal processing unit 204 from the information regarding the encoding method included in the content profile acquired in S410 ( S502).

  When the signal processing unit 204 determines that decoding is possible (S503, Yes), the control unit 211 sets sync Decoder Flag (hereinafter referred to as “Sync Dec. Flag”) = 1 and source Decoder Flag (hereinafter referred to as “source Dec. Flag”) = 1. Setting is made (S504).

  Then, a transfer method determination process based on the GUI drawing performance is executed (S506). Although details will be described later, in this transfer method determination processing, a sink GUI flag and a source GUI flag are set. The control unit 211 receives the sync Dec. Flag, Source Dec. The transfer method (transfer protocol) is determined in accordance with the values of Flag, Sync GUI Flag, and Source GUI Flag.

On the other hand, when the signal processing unit 204 determines that decoding is not possible (S503, No), the control unit 211 performs sync Dec. Flag = 0, source Dec. Flag = 1 is set (S505).
In step S507, the control unit 211 determines that the transfer method is streaming transfer.
In step S <b> 508, the control unit 211 activates a viewer application corresponding to the determined transfer method (transfer protocol), and requests the source device 100 to transfer data.

FIG. 6 is a flowchart for explaining the details of the transfer method determination process based on the GUI rendering performance performed in S506 of FIG.
Based on the content profile acquired in S409, the control unit 211 as the second determination unit determines whether format conversion in the sink-side device 200 is necessary when displaying and outputting content data (S602). Here, the format conversion includes aspect ratio conversion, interlace-progressive conversion (IP conversion), and the like.

When it is determined that format conversion is necessary, the control unit 211 sets sink GUI Flag = 1 and source GUI Flag = 0 (S607).
When it is determined that format conversion is unnecessary, the control unit 211 determines that the processing capability of the video signal of the sink side device 200 is equivalent to that of the source side device 100. Then, the control unit 211 as a comparison unit compares the GUI drawing performance of the source device acquired in S412 with the GUI drawing performance of the sink device (S604).

  When it is determined that the drawing performance is equivalent as a result of the comparison (S604, Yes), the control unit 211 sets the sink GUI Flag = 1 and the source GUI Flag = 1 (S605). Here, the equivalent GUI drawing performance is not limited to completely the same. For example, the difference between the width / height of the GUI plane, the number of gradations at the time of data drawing, and the bit depth is within a predetermined range. It may be the case.

  On the other hand, when it is determined that the drawing performance is not equivalent (S604, No), the control unit 211 determines whether the GUI drawing performance (performance of the GUI generation unit 208) of the sink device 200 is higher (S606). ).

  When it is determined that the GUI drawing performance of the sink-side apparatus 200 is higher (S606, Yes), the control unit 211 sets the sink GUI Flag = 1 and the source GUI Flag = 0 (S607). On the other hand, when it is determined that the GUI drawing performance of the sink-side device 200 is lower (S606, N0), the control unit 211 sets the sink GUI Flag = 0 and the source GUI Flag = 1 (S608). Here, the low drawing performance may be when the width or height of the GUI plane is small, when the number of gradations is low, or when the bit depth is shallow.

  Then, the control unit 211 receives the sync Dec. Flag, Source Dec. A transfer method (transfer protocol) is determined in accordance with the values of Flag, Sync GUI Flag, and Source GUI Flag (S609).

  Table 1 shows the sync Dec. in this embodiment. Flag, Source Dec. The relationship between the values of Flag, Sync GUI Flag, and Source GUI Flag and the determined transfer method is shown.

Here, when all the flags are 1, that is,
Content data can be decrypted by the sink side device 200,
・ No need for format conversion at the sink device 200,
-The GUI drawing performance is the same between the sink side device 200 and the source side device 100,
If all the conditions are satisfied, it indicates that either the stream transfer or the file transfer may be determined. For example, when stream transfer is set in advance as a default, it is determined to be stream transfer.

  Others can be decoded by the sink-side device 200, and are determined to be stream transfer unless the GUI drawing performance of the sink-side device 200 is higher than the GUI drawing performance of the source-side device 100.

  For this reason, content data that cannot be decrypted by the sink-side device 200 is requested to be stream-transferred, so that the video decrypted by the source-side device 100 can be viewed by the sink-side device 200 and can be viewed by the user.

  In addition, when the sink side device 200 can perform decoding, if there is a difference in the GUI drawing performance, the transfer method is determined so that decoding is performed on the higher GUI drawing performance side. It is possible to view and manipulate the GUI of image quality.

  As described above, according to the present embodiment, when the content data included in the source device (video output device) can be decrypted by the sink device (video display device), it is appropriate when transferring the content data. It is possible to automatically select a suitable transfer protocol.

  Further, when the sink side device can decode the content data, the transfer protocol is determined so that the GUI drawing performance of the source side device and the sink side device is higher, so that the user can obtain higher image quality. It is also possible to provide a GUI.

(Second Embodiment)
Next, a second embodiment of the present invention will be described.
In the first embodiment, the configuration has been described in which the sink side device determines the transfer method (transfer protocol) and requests the determined transfer method from the source side device. On the other hand, the present embodiment is different in that the source side apparatus is configured to determine a transfer method (transfer protocol).

  In the second embodiment, the source device 100 determines a transfer method based on the format supported by the sink device 200 and the GUI rendering performance of the sink device 200, and the determined transfer method is transferred to the sink device 200. It is characterized by notifying. The sink device 200 activates an appropriate viewer application based on the transfer method notified from the source device 100 and designates the transfer method to the source device 100.

FIG. 7 is a sequence diagram for explaining a communication procedure when the sink-side device 200 designates the transfer protocol notified from the source-side device 100 to the source-side device 100. In FIG. 7, the same reference numerals are assigned to procedures equivalent to those in FIG. 4, and redundant description is omitted.
The processes (S401 to S403) from when the sink-side device 200 detects the connection of the source-side device 100 until the device-type inquiry is made are the same as those in the first embodiment.

The control unit 101 of the source side apparatus 100 detects that the sink side apparatus 200 is connected based on a device type inquiry from the sink side apparatus 200 (S401). Then, when the control unit 101 of the source device 100 returns an answer of its own model type to the sink device 200 (S404), it subsequently transmits a command for inquiring device information to the sink device 200 (S705). .
On the other hand, the control unit 211 of the sink device 200 returns information such as the manufacturer, serial number, firmware version, etc. as a response (S706).

  Thereafter, the processing up to the GUI drawing performance inquiry (S711) and the response (S712) is the same as in S407 to S412 in the first embodiment, except that the command and the response transmission direction are reversed. (S707 to S712).

  In this series of processing, the control unit 101 of the source side device 100 transfers the transfer protocol (S708) that the sink side device 200 can handle, the profile of each content data stored in the sink side device 200 (S710), and the sink side device 200. Each GUI drawing performance (S712) is acquired.

  When the processing so far is completed, the control unit 101 of the source device 100 determines a transfer method based on the information acquired in the processing of S706 to S712 (S713), and notifies the sink device 200 of the determined transfer method. (S714). Note that the encoding method that can be decoded by the sink-side device 200 can be estimated from the acquired content profile. That is, the content data stored in the sink device 200 is assumed to be in a format that can be decoded by the sink device 200, and is decoded by the sink device 200 based on the information regarding the encoding method in the content profile. It is determined whether or not the format is convertible.

The method for determining the transfer method is the same as S413 in the first embodiment. Therefore, stream transfer is determined when the content data stored in the storage unit 104 of the source device 100 cannot be decoded by the signal processing unit 204 of the sink device 200. If the signal processing unit 204 of the sink-side device 200 can perform decoding, the transfer method is determined so that playback can be performed with higher GUI drawing performance.
Since the processing after the transfer method is notified in S714 is the same as that in the first embodiment, the description thereof is omitted.

  Also in the present embodiment, as in the first embodiment, it is possible to automatically select an appropriate transfer protocol when transferring content data. Furthermore, the GUI can be viewed with good image quality.

(Other embodiments)
In the above-described embodiment, when content data can be decoded by the sink-side device (video display device), the transfer protocol is further determined in consideration of the GUI drawing performance. However, consideration of GUI drawing performance is not essential in the present invention. If the content data is in a format that cannot be decrypted by the sink side device, at least the problem that the content cannot be viewed can be solved by automatically selecting a protocol to be transferred after decryption by the source side device.

  In the above-described embodiment, the configuration in which the GUI drawing performance is considered only when the format conversion is unnecessary in consideration of whether the format conversion is necessary in the sink side device has been described, but the necessity of the format conversion is not considered. In addition, the GUI drawing performance may be considered directly.

Claims (26)

A video processing device for receiving content data from a video output device,
It is determined whether or not the video processing device can decode the content data received from the video output device, and a transfer protocol used for receiving the content data is determined by the video output device based on the determination result. a first transfer protocol for transferring decrypted the content data from the video output apparatus to the video processing apparatus, prior Symbol the video processing apparatus said content data that is not decoded by the video output device from the image output device a selection means for selecting from among a plurality of transport protocols and a second transport protocol to be transferred to,
Receiving means for receiving the content data from the video output device using the transfer protocol selected by the selection means,
The video processing apparatus, wherein the selection unit selects the first transfer protocol when it is determined that the content data cannot be decoded by the video processing apparatus. And generating means for generating a character / graphic image that can be displayed together with the image based on the content data,
Said selecting means, when the content data is the video processing apparatus is determined to be decoded, a character / graphic image processing performance of the image output apparatus, and a character / graphic image processing performance of the generating means depending on the comparison result of the image processing apparatus according to claim 1, characterized by selecting said first transfer protocol or the second transport protocol. The selection means includes
If it is determined that the content processing data can be decoded by the video processing device, the character / graphic image processing performance of the video output device is higher than the character / graphic image processing performance of the generating means. Select one transfer protocol,
The video processing apparatus according to claim 2, when the character / graphic image processing performance of the generating means is higher than the character / graphic image processing performance of the video output device and selects the second transfer protocol . The video processing apparatus according to claim 2, wherein the character / graphic image processing performance is at least one of a size of a GUI plane, a number of GUI gradations, and a GUI bit depth. The first transfer protocol is a stream transfer protocol;
5. The video processing apparatus according to claim 1, wherein the second transfer protocol is a file transfer protocol. 6. 2. The apparatus according to claim 1, further comprising: a unit that requests the video output device to transfer the content data from the video output device to the video processing device using a transfer protocol selected by the selection unit. The video processing device according to claim 1. The video processing apparatus according to claim 1, further comprising means for inquiring of the video output apparatus about a transfer protocol supported by the video output apparatus. A video output device for outputting content data to a video processing device,
It is determined whether or not the content data to be output to the video processing device can be decrypted by the video processing device, and based on the determination result, a transfer protocol used for outputting the content data is determined by the video output device. a first transfer protocol that outputs the decrypted the content data from the video output apparatus to the video processing apparatus, prior Symbol the video processing apparatus said content data that is not decoded by the video output device from the image output device a selection means for selecting from among a plurality of transport protocols and a second transport protocol to be output to,
Output means for outputting the content data to the video processing device using the transfer protocol selected by the selection means;
Generating means for generating a character / graphic image that can be displayed together with an image based on the content data ,
The selection means includes
If it is determined that the content processing data cannot be decrypted by the video processing device, the first transfer protocol is selected ,
When it is determined that the content processing data can be decoded by the video processing device, the content data depends on a comparison result between the character / graphic image processing performance of the video processing device and the character / graphic image processing performance of the generation unit. And selecting the first transfer protocol or the second transfer protocol . The selection means includes
If it is determined that the content processing data can be decoded by the video processing device, the character / graphic image processing performance of the video processing device is higher than the character / graphic image processing performance of the generating means. 2 Select the transfer protocol,
9. The video output apparatus according to claim 8 , wherein the first transfer protocol is selected when the character / graphic image processing performance of the generating means is higher than the character / graphic image processing performance of the video output apparatus. . The video output apparatus according to claim 8 or 9 , wherein the character / graphic image processing performance is at least one of a size of a GUI plane, a number of GUI gradations, and a GUI bit depth. The first transfer protocol is a stream transfer protocol;
The video output device according to any one of claims 8 to 10, wherein the second transfer protocol is a file transfer protocol. 9. The apparatus according to claim 8, further comprising means for notifying the video processing apparatus that the content data is transferred from the video output apparatus to the video processing apparatus using the transfer protocol selected by the selection means. The video output device according to any one of claims 1 to 11. 13. The video output apparatus according to claim 8, further comprising means for inquiring of the video processing apparatus about a transfer protocol supported by the video processing apparatus. A control method of a video processing device that receives content data from a video output device,
The selection means determines whether or not the video processing device can decode the content data received from the video output device, and based on the determination result, the transfer protocol used for receiving the content data is a first transfer protocol for transferring the content data decoded by the video output device from the image output apparatus to the video processing apparatus, the content data from the video output device that is not decoded in the previous SL video output device a selection step of selecting from among a plurality of transport protocols and a second transport protocol to be transferred to the image processing apparatus,
Receiving means for receiving the content data from the video output device using the transfer protocol selected in the selection step; and
In the selection step, the selection means selects the first transfer protocol when it is determined that the content processing data cannot be decoded by the video processing device. The video processing apparatus further includes a generation unit that generates a character / graphic image that can be displayed together with an image based on the content data,
In the selection step, when it is determined that the content data can be decoded by the video processing device, the selection unit determines the character / graphic image processing performance of the video output device and the character / graphic of the generation unit. depending on the comparison result of the image processing performance, a control method of a video processing apparatus according to claim 14, characterized by selecting said first transfer protocol or the second transport protocol. In the selection step, the selection means includes:
When it is determined that the content processing data can be decrypted by the video processing device,
When the character / graphic image processing performance of the video output device is higher than the character / graphic image processing performance of the generating means, the first transfer protocol is selected,
The video processing apparatus according to claim 15, when the character / graphic image processing performance of the generating means is higher than the character / graphic image processing performance of the video output device and selects the second transfer protocol Control method. The video processing apparatus control according to claim 15 or 16 , wherein the character / graphic image processing performance is at least one of a size of a GUI plane, a number of GUI gradations, and a GUI bit depth. Method. The first transfer protocol is a stream transfer protocol;
The method of controlling a video processing apparatus according to any one of claims 14 to 17, wherein the second transfer protocol is a file transfer protocol. The requesting means further requests the video output device to transfer the content data from the video output device to the video processing device using the transfer protocol selected in the selecting step. The method for controlling a video processing apparatus according to any one of claims 14 to 18. 20. The video processing device according to claim 14, further comprising a step of inquiring the video output device for a transfer protocol supported by the video output device. Control method. A method of controlling a video output device that outputs content data to a video processing device,
The video output device includes a generation unit that generates a character / graphic image that can be displayed together with an image based on the content data;
The control method is
The selection unit determines whether or not the video processing device can decrypt the content data to be output to the video processing device, and based on the determination result, a transfer protocol used to output the content data is a first transfer protocol that outputs the contents data decrypted by the image output apparatus from the image output apparatus to the video processing apparatus, the content data from the video output device that is not decoded in the previous SL video output device a selection step of selecting from among a plurality of transport protocols and a second transport protocol to be output to the video processing device,
An output unit that outputs the content data to the video processing device using the transfer protocol selected by the selection unit; and
In the selection step, the selection means includes :
If the pre-Symbol content data the video processing apparatus is determined not decodable, it selects the first transfer protocol,
When it is determined that the content data can be decoded by the video processing device, the character / graphic image processing performance of the video processing device is compared with the character / graphic image processing performance of the generating unit, A method for controlling a video output apparatus , wherein the first transfer protocol or the second transfer protocol is selected according to a result. In the selection step, the selection means includes:
If it is determined that the content processing data can be decoded by the video processing device, the character / graphic image processing performance of the video processing device is higher than the character / graphic image processing performance of the generating means. 2 Select the transfer protocol,
The video output device according to claim 21 , wherein the first transfer protocol is selected when the character / graphic image processing performance of the generating means is higher than the character / graphic image processing performance of the video output device. Control method. The character / graphic image processing performance, the size of the GUI plane, GUI gradation number, the control of the video output device according to claim 21 or claim 22, characterized in that at least one of GUI bit depth Method. The first transfer protocol is a stream transfer protocol;
The method for controlling a video output device according to any one of claims 21 to 23, wherein the second transfer protocol is a file transfer protocol. The information processing apparatus further comprises a step of notifying the video processing apparatus that the content data is transferred from the video output apparatus to the video processing apparatus using the transfer protocol selected by the selection means. The method for controlling a video output apparatus according to any one of claims 21 to 24. The video output device according to any one of claims 21 to 25, wherein the inquiry means further comprises a step of inquiring the video processing device about a transfer protocol supported by the video processing device. Control method.

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