JP2014176066A - Information processing device, method, and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an information processing device, method, and program, with which it is possible to make full use of performance of an output device, which provides an image and audio, by generating image data and audio data in accordance with the performance of the output device.SOLUTION: An information processing device according to the present invention determines a parameter, which is to be used in generation of at least one of image data and audio data, based on device information, which indicates performance of an output device that outputs at least one of an image signal and an audio signal, and determination reference information. Then, the information processing device according to the present invention generates at least one of image data and audio data from at least one of an image signal and an audio signal on the basis of the parameter.

Description

  The present invention relates to a communication system that performs video and audio communication, and more particularly to an information processing apparatus, method, and program that perform video and audio communication between a plurality of sites.

  2. Description of the Related Art Conventionally, with the spread of networks capable of high-speed data communication such as the Internet, video conference systems that perform conferences and the like by mutually distributing video and audio between a plurality of remote locations are used.

  As an example of a video signal processing device that realizes such a video conference system, Patent Document 1 discloses a video signal processing device that processes a video signal received from an output device such as a camera or a computer and outputs the video signal through an electric communication line. To do. This video signal processing apparatus stores a video signal and a parameter set in association with each other in advance, and processes the video signal using the parameter set associated with the video signal selected by the user.

  However, since the video signal processing apparatus disclosed in Patent Document 1 processes a video signal using a parameter set set for each input terminal such as an HDMI connector or an S terminal, the resolution, the transfer frame rate, and the video compression format are processed. When output devices with different performances such as color temperature are connected to the same input terminal, video signals of output devices with different performances are processed using the same parameter set. For this reason, there is a problem that the video signal cannot be processed according to the performance of each output device, and the performance of the output device cannot be fully utilized.

  The present invention solves the above-described problem, and generates an image data and audio data according to the performance of an output device that provides video and audio, and can fully utilize the performance of the output device, An object is to provide a method and a program.

  The information processing apparatus according to the present invention is used to generate at least one of image data and audio data based on device information indicating the performance of an output device that outputs at least one of a video signal and an audio signal, and determination criterion information. Determine the parameters. The information processing apparatus according to the present invention generates at least one of image data and audio data from at least one of the video signal and the audio signal based on the parameter.

  By adopting the above-described means, the information processing apparatus of the present invention can generate image data and audio data according to the performance of the output device that provides video and audio, and can fully utilize the performance of the output device.

The figure which shows one Embodiment of the communication system of this invention. The figure which shows one Embodiment of the hardware block diagram of the client terminal of this invention. The figure which shows one Embodiment of the function structure of the client terminal of this invention, and an output device. The sequence diagram which shows the process which the client terminal of this invention performs. The flowchart which shows one Embodiment of the parameter determination process which the client terminal of this invention performs. The figure which shows one Embodiment of the device information used by the parameter determination process shown in FIG. 5, and the process result of the said parameter determination process. The flowchart which shows another embodiment of the parameter determination process which the client terminal of this invention performs. The flowchart which shows other embodiment of the parameter determination process which the client terminal of this invention performs. The figure which shows one Embodiment of a priority mode determination table. The figure which shows one Embodiment of the device information used by the parameter determination process shown in FIG. 8, and the process result of the said parameter determination process. The flowchart which shows other embodiment of the parameter determination process which the client terminal of this invention performs.

  Hereinafter, although this invention is demonstrated with embodiment, this invention is not limited to embodiment mentioned later.

  FIG. 1 is a diagram showing an embodiment of a communication system of the present invention. In the communication system 100, a client terminal 120a to which the output device 122a is connected, a client terminal 120b to which the output device 122b is connected, and a client terminal 120c to which the output device 122c is connected are connected via the network 110. System.

  The client terminals 120a, 120b, and 120c are information processing apparatuses that mutually communicate images and sounds with client terminals at other bases. The client terminals 120a, 120b, and 120c display images provided by the output devices 122a, 122b, and 122c at their own bases and other bases on the display device, and reproduce sound provided by the client terminals at other bases. In the embodiment shown in FIG. 1, a desktop personal computer is shown as a client terminal, but a tablet PC such as a notebook PC or iPad (registered trademark) can also be used.

  The output devices 122a, 122b, and 122c are devices that provide video and audio to the client terminals 120a, 120b, and 120c. In the present embodiment, a device such as a video camera or a microphone can be employed as the output device.

  FIG. 2 is a diagram showing an embodiment of a hardware configuration diagram of a client terminal according to the present invention. Hereinafter, the hardware configuration of the client terminal 120a will be described with reference to FIG. The hardware configuration of the client terminals 120b and 120c is the same as that of the client terminal 120a, and thus the description thereof is omitted.

  The client terminal 120a includes a CPU (Central Processing Unit) 200, a ROM (Read Only Memory) 201, a RAM (Random Access Memory) 202, an HDD (Hard Disc Drive) 203, and a network interface (I / F) 204. The external device I / F 205 and the display device I / F 206 are included.

  The CPU 200 is a processor that controls the overall operation of the client terminal 120a. The ROM 201 is a storage device that stores the program of the present invention. The RAM 202 is a storage device that provides a program execution space. The HDD 203 is a storage device capable of continuously storing various data such as the program of the present invention.

  The client terminal 120a reads the program of the present invention from the HDD 203 under the management of the WINDOWS (registered trademark) series, Mac (registered trademark) OS (Operating System), UNIX (registered trademark), LINUX (registered trademark), or the like. The function means described later is realized on the client terminal 120a by being expanded in the RAM 202 and executed. The program of the present invention can be described in a program language such as assembler, C, C ++, Java (registered trademark), JavaScript (registered trademark), PERL, RUBY, or PYTHON.

  The network I / F 204 is a physical interface between the client terminal 120a and the network 110, and communicates various data with the client terminals 120b and 120c at other bases via the network 110. The external device I / F 205 is a physical interface between the client terminal 120a and the output device 122a, and receives image data and audio data from the output device 122a. The display device I / F 206 is a physical interface between the client terminal 120a and the display device, and outputs and displays an image on the display device.

  FIG. 3 is a diagram showing an embodiment of the functional configuration of the client terminal and the output device of the present invention. Hereinafter, functional configurations of the client terminal 120a and the output device 122a will be described with reference to FIG. The functional configurations of the client terminals 120b and 120c and the output devices 122b and 122c are the same as those of the client terminal 120a and the output device 122a, and thus description thereof is omitted.

  The output device 122 a includes a device information storage unit 300 and an interface 301. The device information storage unit 300 is a storage unit that stores device information of the output device 122a. The device information is information related to the performance of the output device 122a. The device information includes, for example, the resolution (n × m) of the video output device, the frame rate (fps), the video compression format (such as YUY2 and MJPG) and the color temperature (k), the input sensitivity (db) of the audio output device, This is performance information such as a frequency band (Hz) that can be collected.

  The interface 301 is a logical interface that controls communication with the client terminal 120a, and provides the client terminal 120a with video signals, audio signals, and device information generated by the output device 122a. The interface 301 establishes communication with the client terminal 120a in response to a request from the client terminal 120a, and provides a video signal, an audio signal, and device information to the client terminal 120a.

  The client terminal 120a includes a connection processing unit 303, an interface 304, a device information acquisition unit 305, a parameter determination unit 306, a determination criterion storage unit 307, and an output data generation unit 308.

  The connection processing unit 303 is means for establishing communication with an output device connected to the client terminal 120a. The connection processing unit 303 transmits a connection request to the output device 122a selected by the user via the interface 304, and establishes communication with the output device 122a.

  The interface 304 is a logical interface that controls communication with the output device 122a. The interface 304 establishes communication with the output device 122a in response to a connection request from the connection processing unit 303.

  The interface 304 requests device information from the output device 122a in response to the device information acquisition request from the device information acquisition unit 305. When the interface 304 acquires device information from the output device 122a, the interface 304 provides the device information to the device information acquisition unit 305. The interface 304 provides the output data generation unit 308 with the video signal received together with the device information.

  The device information acquisition unit 305 is a unit that acquires device information from the output device 122a. In response to the device information acquisition instruction from the parameter determination unit 306, the device information acquisition unit 305 transmits a device information acquisition request to the output device 122a via the interface 304, and acquires device information from the output device 122a.

  The parameter determination unit 306 is means for determining a parameter used for generating at least one of image data and audio data that are output data of the client terminal 120a. The parameter determination unit 306 determines parameters using the device information of the output device 122a and the determination criterion information stored in the determination criterion storage unit 307. The process executed by the parameter determination unit 306 (hereinafter referred to as “parameter determination process”) will be described in detail with reference to FIGS. 5 and 7.

  The determination criterion storage unit 307 is a storage unit that stores determination criterion information. The criterion information is information that specifies the value and format of a parameter used for generating output data. The criterion information includes parameter values and types that can maximize the performance of the output device, that is, for example, the maximum resolution of the video output device, the maximum frame rate, the video compression format, the maximum color temperature, and the audio output. The maximum input sensitivity of the device, the maximum frequency band, etc. can be specified.

  The output data generation unit 308 is a unit that generates output data based on the parameters determined by the parameter determination unit 306. The output data generation unit 308 generates at least one of image data and audio data, which is output data, using the parameter according to an instruction from the parameter determination unit 306.

  FIG. 4 is a sequence diagram showing processing executed by the client terminal of the present invention. In the client terminal 120a, when the connection destination output device 122a is designated by a user operation, the connection processing unit 303 transmits a connection request to the output device 122a designated by the user via the interface 304.

  When receiving a connection request from the client terminal 120a, the output device 122a transmits a response indicating that the connection is successful if communication with the client terminal 120a is possible. When the connection processing unit 303 of the client terminal 120 a receives a response indicating a successful connection from the output device 122 a via the interface 304, the connection processing unit 303 transmits a connection completion notification to the parameter determination unit 306.

  When the parameter determination unit 306 receives the connection completion notification from the parameter determination unit 306, the parameter determination unit 306 instructs the device information acquisition unit 305 to acquire device information, and the device information acquisition unit 305 notifies the output device 122 a via the interface 304. Send device information provision request.

  Upon receiving the device information provision request, the output device 122a transmits the device information to the client terminal 120a and starts supplying at least one of a video signal and an audio signal. The interface 304 of the client terminal 120a transmits the device information received from the output device 122a to the device information acquisition unit 305, and transmits at least one of a video signal and an audio signal to the output data generation unit 308. The device information acquisition unit 305 provides the device information to the parameter determination unit 306.

  When the parameter determination unit 306 receives the device information, the parameter determination unit 306 acquires the determination criterion information from the determination criterion storage unit 307, and executes the parameter determination process illustrated in FIGS. 5 and 7 using the device information and the determination criterion information. . When the parameter determination unit 306 determines the parameter, the parameter determination unit 306 transmits the parameter to the output data generation unit 308 together with the output data generation request. The output data generation unit 308 generates output data using the parameter determined by the parameter determination unit 306 and at least one of the video signal and the audio signal provided by the output device 122a.

  FIG. 5 is a flowchart showing an embodiment of parameter determination processing executed by the client terminal of the present invention. Hereinafter, with reference to FIG. 5, a parameter determination process executed when the output device 122a is a video output device will be described. In the embodiment shown in FIG. 5, it is assumed that the maximum resolution, the maximum frame rate, the compression format with a low compression rate, and the maximum color temperature of the video output device are specified by the determination criterion information.

  The processing in FIG. 5 starts from step S500. In step S501, the parameter determination unit 306 of the client terminals 120a, 120b, and 120c uses the device information and the criterion information to determine the maximum of the video output device that is the output device 122a. Determine the resolution. In step S502, the parameter determination unit 306 determines the maximum frame rate of the video output device using the device information and the determination criterion information. In step S503, the parameter determination unit 306 determines a compression format with a low compression rate employed by the video output device, using the device information and the determination criterion information. In step S504, the parameter determination unit 306 determines the maximum color temperature of the video output device using the device information and the criterion information.

  In step S505, the parameter determination unit 306 determines parameters to be used for generating image data using the determination results in steps S501 to S504, and the process ends in step S506.

  FIG. 6 is a diagram showing an embodiment of device information used in the parameter determination process shown in FIG. 5 and a result of the parameter determination process. The client terminals 120a, 120b, and 120c execute the parameter determination process described above using the device information 600, 601, and 602 as input information, and output process results 610, 611, and 612 indicating the parameters determined in the parameter determination process. .

  The device information 600, 601, and 602 is device information provided by the output devices 122a, 122b, and 122c. Device information 600, 601 and 602 shown in FIG. 6 is device information of the video output apparatus. The device information 600, 601, and 602 indicate a format indicating a resolution, a frame rate, and a moving image compression format that can be supported by the video output apparatus.

  The device information 600 indicates that the video output apparatus can provide a video signal having a resolution of 1920 × 1080 at the maximum. The device information 600 indicates that the video output apparatus can output a video signal at a frame rate of 60 fps at the maximum. Further, the device information 600 indicates that the video output apparatus can use YUY2 and MJPG as formats.

  The processing result 610 is a result of parameter determination processing using the device information 600 as input information. The processing result 610 includes “1080 @ 60” that indicates the maximum resolution and frame rate of the video output device and “YUY2” that indicates an uncompressed format that can be used by the video output device.

  The device information 601 indicates that the video output apparatus can provide a video signal having a resolution of 1280 × 720 at the maximum. The device information 601 indicates that the video output apparatus can output a video signal at a maximum frame rate of 30 fps. Further, the device information 601 indicates that the video output apparatus can use YUY2 and MJPG as formats.

  The processing result 611 is a result of parameter determination processing using the device information 601 as input information. The processing result 611 includes “720 @ 30” indicating the maximum resolution and frame rate of the video output device and “YUY2” indicating the uncompressed format usable by the video output device.

  The device information 602 indicates that the video output apparatus can provide a video signal having a resolution of 640 × 480 at the maximum. The device information 602 indicates that the video output apparatus can output a video signal at a maximum frame rate of 15 fps. Furthermore, the device information 602 indicates that the video output apparatus can use YUY2 as a format.

  The processing result 612 is a result of parameter determination processing using the device information 602 as input information. The processing result 612 includes “VGA @ 15” that indicates the maximum resolution and frame rate of the video output device and “YUY2” that indicates an uncompressed format that can be used by the video output device.

  In the present embodiment, parameter values and types that can make maximum use of the performance of the output device, that is, the maximum resolution, frame rate, and uncompressed format are adopted as parameters for generating image data. In other embodiments, the user can generate criteria information and specify any value or type of parameter. For example, various conditions such as a medium resolution and format, and a constant frame rate can be designated. Thereby, it is possible to set parameters in accordance with the user's intention.

  FIG. 7 is a flowchart showing another embodiment of the parameter determination process executed by the client terminal of the present invention. Hereinafter, with reference to FIG. 7, a parameter determination process executed when the output device 122a is an audio output device will be described. In the embodiment shown in FIG. 7, it is assumed that the maximum input sensitivity and the maximum frequency band of the audio output device are specified by the criterion information.

  The processing in FIG. 7 starts from step S700. In step S701, the parameter determination unit 306 of the client terminals 120a, 120b, and 120c uses the device information and the criterion information to determine the maximum of the audio output device that is the output device 122a. Determine the input sensitivity. In step S702, the parameter determination unit 306 determines the maximum frequency band of the audio output device using the device information and the determination criterion information. In step S703, the parameter determination unit 306 determines a parameter to be used for generating voice data using the determination results in steps S701 and S702, and the process ends in step S704.

  FIG. 8 is a flowchart showing another embodiment of the parameter determination process executed by the client terminal of the present invention. Hereinafter, another embodiment of the parameter determination process executed when the output device 122a is a video output device will be described with reference to FIG. In the embodiment shown in FIG. 8, it is assumed that the maximum resolution, the maximum frame rate, the compression format with a low compression rate, and the maximum color temperature of the video output device are specified by the determination criterion information.

  The processing in FIG. 8 starts from step S800, and in step S801, the parameter determination unit 306 of the client terminals 120a, 120b, and 120c uses the device information and the criterion information to determine the maximum of the video output device that is the output device 122a. Determine the resolution. In step S802, the parameter determination unit 306 determines the maximum frame rate of the video output device using the device information and the determination criterion information. In step S803, the parameter determination unit 306 determines a compression format with a low compression rate adopted by the video output device, using the device information and the determination criterion information. In step S804, the parameter determination unit 306 determines the maximum color temperature of the video output device using the device information and the determination criterion information.

  In step S805, the parameter determination unit 306 refers to a priority mode determination table that is information that can specify a parameter to be prioritized, and determines a priority mode using device information and bandwidth information. The bandwidth information is information indicating the transfer rate (kbps) of the communication system 100. The bandwidth information can be generated by the user inputting an arbitrary value to the client terminals 120a, 120b, and 120c. Further, the client terminals 120a, 120b, and 120c may detect the transfer rate of the communication system 100 and generate bandwidth information.

  FIG. 9 is a diagram illustrating an embodiment of the priority mode determination table. The priority mode determination table is a data table in which parameters to be prioritized can be specified, and a priority mode, a determination criterion, and a priority order are associated and registered.

  The priority mode is information that specifies which information of the device information should be prioritized when determining the parameter used for generating the output data. The priority modes of the present embodiment include a resolution priority mode that prioritizes resolution, a frame rate priority mode that prioritizes frame rate, and a bandwidth priority mode that prioritizes bandwidth.

  The determination criterion indicates a condition used when determining the above-described priority mode. In the present embodiment, if the resolution indicated by the device information is “720p”, that is, “1280 × 720” or more, the resolution priority mode is selected. If the frame rate indicated by the device information is “60 fps” or higher, the frame rate priority mode is selected. Furthermore, if none of these applies, or if the bandwidth indicated by the bandwidth information is “500 kbps” or less, the bandwidth priority mode is selected.

  When these multiple conditions are met, the priority mode is selected with the priority determined by the priority order. In the embodiment shown in FIG. 9, priorities are given in the order of frame rate, resolution, and bandwidth, but in other embodiments, any priority can be adopted.

  In step S806, the parameter determination unit 306 determines a parameter to be used for generating image data using the determination result in steps S801 to S804 and the priority mode determined in step S805, and the process ends in step S807. To do.

  Specifically, when the resolution priority mode is selected, the parameter determination unit 306 employs a value that can maximize the performance of the output device, that is, the maximum resolution indicated by the device information. When the frame rate priority mode is selected, the parameter determination unit 306 employs a value that can make maximum use of the performance of the output device, that is, the maximum frame rate indicated by the device information. When the bandwidth priority mode is selected, the parameter determination unit 306 employs at least one of a predetermined resolution, a frame rate, a compression format, and a color temperature that does not compress the bandwidth.

  FIG. 10 is a diagram illustrating an embodiment of device information used in the parameter determination process illustrated in FIG. 8 and a processing result of the parameter determination process. The client terminals 120a, 120b, and 120c execute the parameter determination process described above using the device information 1000 and 1010 as input information, and output the processing results 1001 to 1003 and 1011 to 1013.

  The device information 1000 and 1010 is device information provided by the output devices 122a, 122b, and 122c. Device information 1000 and 1010 shown in FIG. 10 is device information of the video output apparatus. Device information 1000 and 1010 indicate the resolution, frame rate, and format that the video output apparatus can support.

  The device information 1000 indicates that the video output apparatus can provide a video signal having a resolution of 1920 × 1080 at the maximum. The device information 1000 indicates that the video output apparatus can output a video signal at a maximum frame rate of 60 fps. Further, the device information 1000 indicates that the video output apparatus can use YUY2 and MJPG as formats.

  The processing results 1001, 1002, and 1003 are the results of parameter determination processing that is executed when the device information 1000 is input information and the frame rate priority mode is selected. As shown in the processing results 1001, 1002, and 1003, the frame rate, which is a parameter to be prioritized, is a value that can maximize the performance of the output device, that is, “60” that indicates the maximum frame rate of the device information 1000 Is selected.

  The parameter determination unit 306 adjusts parameters other than the frame rate to be prioritized according to the bandwidth indicated by the bandwidth information. In the present embodiment, when the bandwidth is sufficient, the parameter determination unit 306, as shown in the processing result 1001, for all parameters, values and formats that can maximize the performance of the output device, that is, Adopt maximum frame rate, maximum resolution and uncompressed format.

  When the bandwidth is insufficient, as shown in the processing result 1002, the parameter determination unit 306 employs a value that can maximize the performance of the output device for the frame rate that is a parameter to be prioritized. For the resolution and format which are parameters other than the parameters to be used, a predetermined medium resolution and uncompressed format are adopted.

  When the bandwidth is excessively insufficient, the parameter determination unit 306 employs a value that can maximize the performance of the output device for the frame rate that is a parameter to be prioritized, as shown in the processing result 1003. As for the resolution and format, which are parameters other than the parameters to be prioritized, a default resolution and an uncompressed format that do not compress the bandwidth are adopted.

  The device information 1010 indicates that the video output apparatus can provide a video signal having a resolution of 1280 × 720 at the maximum. The device information 1010 indicates that the video output apparatus can output a video signal at a maximum frame rate of 30 fps. Further, the device information 1010 indicates that the video output apparatus can use YUY2 and MJPG as formats.

  The processing results 1011, 1012, and 1013 are the results of parameter determination processing that is executed when the device information 1010 is input information and the resolution priority mode is selected. As shown in the processing results 1011, 1012, and 1013, the resolution that is a parameter to be prioritized is selected as a value that can maximize the performance of the output device, that is, “720p” that indicates the maximum resolution of the device information 1010. ing.

  The parameter determination unit 306 adjusts parameters other than the resolution to be prioritized according to the bandwidth indicated by the bandwidth information. In this embodiment, when the bandwidth is sufficient, the parameter determination unit 306, as shown in the processing result 1011, for all parameters, values and formats that can maximize the performance of the output device, that is, Adopt maximum resolution, maximum frame rate and uncompressed format.

  When the bandwidth is insufficient, as shown in the processing result 1012, the parameter determination unit 306 adopts a value that can maximize the performance of the output device and gives priority to the resolution that is a priority parameter. As for the frame rate and format which are parameters other than the power parameter, a predetermined medium frame rate and uncompressed format are adopted.

  When the bandwidth is excessively insufficient, the parameter determination unit 306 adopts a value that can maximize the performance of the output device for the resolution that is a priority parameter as shown in the processing result 1013. For the frame rate and format, which are parameters other than the parameters to be prioritized, a predetermined minimum frame rate and uncompressed format that do not compress the bandwidth are adopted.

  In this embodiment, when the bandwidth is insufficient, an uncompressed compression format is adopted as a format. However, in another embodiment, a compression format having a high compression rate may be adopted.

  FIG. 11 is a flowchart showing another embodiment of the parameter determination process executed by the client terminal of the present invention. Hereinafter, another embodiment of the parameter determination process executed when the output device 122a is an audio output device will be described with reference to FIG. In the embodiment shown in FIG. 11, it is assumed that the maximum input sensitivity and the maximum frequency band of the audio output device are designated by the criterion information.

  The processing in FIG. 11 starts from step S1100. In step S1101, the parameter determination unit 306 of the client terminals 120a, 120b, and 120c uses the device information and the criterion information to determine the maximum of the voice output device that is the output device 122a. Determine the input sensitivity. In step S1102, the parameter determination unit 306 determines the maximum frequency band of the audio output device using the device information and the determination criterion information.

  In step S1103, the parameter determination unit 306 refers to the priority mode determination table and determines the priority mode using device information and bandwidth information. In this embodiment, an input sensitivity priority mode, a frequency band priority mode, and a bandwidth priority mode are adopted as the priority mode. The input sensitivity priority mode is selected when the input sensitivity is equal to or higher than a predetermined input sensitivity. The frequency band priority mode is selected when the frequency band is equal to or higher than a predetermined frequency band. The bandwidth priority mode is selected in other cases or when the bandwidth is equal to or less than a predetermined value.

  In step S1104, the parameter determination unit 306 determines a parameter to be used for generating audio data using the determination results in steps S1101 and S1102 and the priority mode determined in step S1103, and the process ends in step S1105. To do.

  Specifically, when the input sensitivity priority mode is selected, the parameter determination unit 306 employs a value that can maximize the performance of the output device, that is, the maximum input sensitivity indicated by the device information. When the frequency band priority mode is selected, the parameter determination unit 306 employs a value that can use the performance of the output device to the maximum, that is, the maximum frequency band indicated by the device information. When the bandwidth priority mode is selected, the parameter determination unit 306 employs at least one of a predetermined input sensitivity and a frequency band that do not compress the bandwidth.

  Although the present embodiment has been described so far, the present invention is not limited to the above-described embodiment, and the constituent elements of the present embodiment are changed or deleted, or the constituent elements of the present embodiment are changed to other configurations. Changes can be made within the range that can be conceived by those skilled in the art, such as adding elements. Any aspect is included in the scope of the present invention as long as the effects of the present invention are exhibited.

DESCRIPTION OF SYMBOLS 100 ... Communication system, 110 ... Network, 120a, 120b, 120c ... Client terminal, 122a, 122b, 122c ... Output device

JP2009-038604

Claims (7)

An information processing apparatus that processes at least one of a video signal and an audio signal,
Device information acquisition means for acquiring device information indicating the performance of an output device that outputs at least one of a video signal and an audio signal;
Parameter determination means for determining a parameter based on determination criterion information for specifying a value or format of a parameter used to generate at least one of image data and audio data, and the device information;
And an output data generating unit configured to generate at least one of image data and audio data from at least one of the video signal and audio signal based on the parameter.   The parameter determining means refers to information that can identify a parameter to be prioritized, determines a parameter to be prioritized, and sets the value or format of the parameter to be prioritized to a value that can maximize the performance of the output device or The information processing apparatus according to claim 1, wherein the information processing apparatus is in a format.   The information processing apparatus according to claim 1, wherein the device information is at least one of a resolution of the output apparatus, a frame rate, a moving image compression format, a color temperature, an input sensitivity, and a frequency band in which sound can be collected. A method executed by an information processing apparatus that processes at least one of a video signal and an audio signal, wherein the information processing apparatus includes:
Obtaining device information indicating the performance of an output device that outputs at least one of a video signal and an audio signal;
A parameter to be used for generating at least one of image data and audio data is determined based on the criterion information for specifying the value or format of the parameter used for generating at least one of image data and audio data and the device information. And steps to
Generating at least one of image data and audio data from at least one of the video signal and audio signal based on the parameter. The determining step includes:
Determining parameters to be prioritized by referring to information that can identify parameters to be prioritized;
The method according to claim 4, further comprising the step of setting the value or format of the parameter to be prioritized to a value or format that maximizes the performance of the output device.   The method according to claim 4 or 5, wherein the device information is at least one of a resolution of the output device, a frame rate, a moving image compression format, a color temperature, an input sensitivity, and a frequency band in which sound can be collected.   An apparatus-executable program for an information processing apparatus to execute the method according to any one of claims 4 to 6.