JP2007043323A - Server apparatus and control method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a technology whereby an operating result intended by an operator can be obtained when a server side carries out operations associated with the control of reproduction contents while reproduced contents are viewed at a reproducing apparatus in a system comprising the server for distributing streaming data and the reproducing apparatus for reproducing the distributed streaming data. <P>SOLUTION: The server apparatus (300) communicatably connected to the reproducing apparatus (400) for reproducing the distributed streaming data and distributing the streaming data includes: a means for entering an instruction of controlling a reproduction result at the reproducing apparatus (400); a means for acquiring time from the distribution of the streaming data until reproduction of the streaming data by the reproducing apparatus; and a means for controlling distribution positions of the streaming data going to be distributed on the basis of the acquired time when a prescribed instruction is entered. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a control processing technique in a server that distributes data.

  In recent years, remote playback systems have become widespread with the speeding up of digital communication lines. The remote reproduction system refers to a system in which streaming data including AV (Audio Visual) data is distributed from a distribution source server and is remotely reproduced by a distribution destination reproduction apparatus (display or the like).

  Various techniques have been proposed for the remote playback system. For example, in Patent Document 1 below, a distribution server distributes a current image so that a viewer of an image reproduced by a reproduction device can perform accurate image control when operated by the reproduction device. A configuration is disclosed in which a counter value indicating a position is periodically notified to a delivery destination.

Further, in Patent Document 2 below, in performing remote reproduction of related streaming data with a plurality of reproduction apparatuses (display, speaker, etc.), the consistency of reproduction data is obtained by synchronizing the clock and phase between the reproduction apparatuses. The technique which takes is disclosed.
JP 2000-11619 A JP 2003-37585 A

  However, many of the proposals so far including the above-mentioned Patent Documents 1 and 2 are based on the premise that the operation performed by the viewer is performed on the playback device side based on the playback content of the playback device at the distribution destination. For this reason, there has been a problem that accurate control cannot be performed when the viewer tries to perform an operation on the server of the distribution source on the basis of the content reproduced by the reproduction apparatus of the distribution destination. This problem will be described in detail with reference to FIGS.

  In FIG. 1, streaming data distributed via a communication path 103 is remotely reproduced from a camcorder 101 that functions as a distribution source server (media server) on a display 102 that functions as a distribution destination reproduction apparatus (media renderer). It is the figure which showed a mode.

  As shown in the figure, the transmission format of streaming data on the communication path 103 is MPEG2-TS (MPEG2 Transport Stream), and the recording format of streaming data in the camcorder 101 is DV format.

  In this case, the information 104 read from the recording medium by the camcorder 101 is converted from the DV format to the MPEG2-TS format. Then, it is distributed to the display 102 via the communication path 103, decoded from the MPEG2-TS format into AV data, and then reproduced and displayed in a state where it can be actually viewed (105).

  For this reason, the time required for conversion, distribution, and decoding exists as a display delay time 106 on the display 102 (time for distributing streaming data from the camcorder 101 and displaying it on the display 102).

  FIG. 2 is a diagram illustrating a state in which an image still instruction is input to the camcorder 101 while viewing the reproduction content distributed from the camcorder 101 and reproduced on the display 102.

  When the viewer who has recognized the reproduction display (202) of the target image on the display 102 performs a still image operation (203) on the camcorder 101, the input of the target image (201) is a display delay time (106). ) Completed before. Then, the still image is delivered and displayed as a still image by the still operation (203) (204). For this reason, after the viewer's still operation (203), after the display delay time (106) has elapsed, the still image (204) at the playback position advanced by the display delay time (106) from the desired image is displayed on the display 102. The Rukoto.

  As described above, in the conventional remote reproduction system, the streaming data control operation (stationary, fast forward, rewind, etc.) is performed via the server side interface while viewing the streaming data reproduced on the reproduction apparatus side. I couldn't. That is, remote playback cannot be performed at the playback position intended by the viewer.

  The present invention has been made in view of the above-described problems, and is intended to be performed by an operator when performing operations related to control of playback content on the server side while viewing playback content played back by a playback device. The purpose is to obtain results.

In order to achieve the above object, a server apparatus according to the present invention has the following configuration. That is,
A server device capable of communicating with a playback device,
Input means for inputting an instruction for controlling a reproduction result reproduced in the reproduction device;
Obtaining means for distributing data from the server device and obtaining a reproduction delay time required for reproduction on the reproduction device;
Control means for controlling a delivery position of the delivery data based on a reproduction delay time acquired by the acquisition means when a predetermined instruction is input via the input means.

  According to the present invention, an operation result intended by the operator can be obtained when an operation relating to the control of the reproduction content is performed on the server side while viewing the reproduction content reproduced by the reproduction device.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings as necessary.

[First Embodiment]
In this embodiment, as an example of a remote playback system, a camcorder that functions as a distribution source server (media server) and a display that functions as a distribution destination playback device (media renderer) are connected by a wireless communication medium. List the system. A case where streaming data for AV (Audio, Visual) is distributed from the camcorder to the display will be described. In particular, a description will be given of a playback control process by the camcorder when the operator performs an operation on the camcorder side while visually recognizing the playback content on the display.

<Camcorder (media server)>
FIG. 3 is a diagram showing a block configuration of the camcorder 300 (media server) according to the first embodiment of the present invention, which constitutes the remote playback system.

  In the figure, reference numeral 301 denotes an AV signal processing unit that controls encoding, decoding, and format conversion of AV streaming data. Reference numerals 302, 303, 304, and 305 denote an input unit (imaging unit and sound collection unit) and a control unit (imaging control unit and sound collection control unit) for inputting AV streaming data.

  Reference numerals 306 and 307 denote a display unit and a display control unit that display and control AV streaming data during shooting and reproduction. Reference numerals 308 and 309 denote a recording medium and a recording medium control unit for recording / reproducing AV streaming data. Reference numerals 310 and 311 denote a wireless unit and a communication control unit that control connection with a display (media renderer).

  Reference numeral 312 denotes a renderer counter for managing the playback position of the display (media renderer). Reference numeral 313 denotes a server counter for managing the distribution position of the camcorder (media server), 314 denotes a system control unit that controls the entire camcorder 300, and 315 denotes an operation unit that controls a user interface.

<Relationship between server counter and renderer counter>
FIG. 4 is a diagram schematically showing a temporal relationship between the server counter 313 and the renderer counter 312 of the camcorder 300 in the remote playback system including the camcorder 300 and the display 400.

  As shown in the figure, in the camcorder 300 according to the present embodiment, the value of the renderer counter 312 is calculated using the server counter 313 and the display delay time, and then the distribution state is controlled based on the renderer counter 312. It is characterized by that. As described above, conventionally, the display 102 has been provided with operation means for performing operations related to control of the playback content of streaming data. For this reason, when the AV streaming data is distributed from the camcorder 101, the distribution state is controlled based on the value of the server counter.

<Process flow in camcorder (stationary operation)>
Next, in the remote reproduction system including the camcorder 300 according to the present embodiment, the flow of processing when a static operation is performed on the camcorder 101 side based on the reproduction content viewed by the operator on the display 102 side as a criterion. This will be described with reference to FIGS.

  When the operator visually recognizes an image (500) as a stationary object on the display 400 and performs a stationary operation (501) of the reproduced image via the operation unit 315 on the camcorder 300 side, the camcorder 300 displays the flowchart of FIG. The process shown is started.

  In step S601, a static operation (501) is accepted, and image display means (functions relating to display, such as a display unit 306 such as a liquid crystal viewfinder and a display control unit 307) provided in the camcorder 300 itself is enabled (playback display state) ) Is determined.

  If it is determined in step S601 that it is valid, the process proceeds to step S606, where it is determined that the operator has performed a stationary operation based on the display image on the image display means as a criterion, and the stationary operation is accepted. Play back still images at the time.

  On the other hand, if it is determined in step S601 that it is not valid, the process proceeds to step S602. In step S602, it is determined that the operator has performed a stationary operation (501) using the reproduced image on the display 400 as a determination criterion, and the system control unit 314 obtains the value of the renderer counter 312 when the stationary operation is accepted.

  In step S603, the system control unit 314 of the camcorder 300 starts rewinding the streaming data. Note that the rewinding is delayed and reproduced on the display 400 with a delay of the display delay time. Further, in step S604, it is determined whether or not the server counter 313 matches the value of the renderer counter 312 acquired in step S602. If they do not match, rewinding is continued. On the other hand, if it is determined that the server counter 313 matches the value of the renderer counter 312 acquired in step S602, the process proceeds to step S605, where a still image corresponding to the counter value is distributed (503, 504). .

  As a result, a still image desired by the operator is reproduced (507) after the image reproduction (505) corresponding to the display delay time and the rewind reproduction (506) corresponding to the rewind reproduction time (507).

<Processing flow in camcorder (rewind playback start operation)>
Next, in the remote playback system that distributes streaming data for AV, processing when the rewind playback start operation is performed on the camcorder 300 side based on the playback content that the operator is viewing on the display 400 side The flow will be described. The description will be given using a sequence chart (FIG. 7) and a flowchart (FIG. 8) showing processing on the camcorder 300 side.

  When the operator visually recognizes the rewind playback start target image (700) on the display 400 and performs a rewind playback start operation (701) via the operation unit 315 on the camcorder 300 side, the camcorder 300 in FIG. The process shown in the flowchart is started.

  In step S801, the rewind reproduction start operation (701) is accepted, and it is determined whether or not the image display means provided in the camcorder 300 itself is valid as a display means (reproduction display state).

  If it is determined in step S801 that it is valid, the process proceeds to step S806. In step S806, it is determined that the operator has performed a rewind start operation based on the display image on the image display unit as a criterion, and rewinding of the stream data is started from the time when the rewind start operation is received.

  On the other hand, if it is determined in step S801 that it is not valid, the process proceeds to step S802. In step S802, it is determined that the operator has performed a rewind playback start operation (701) based on the playback image on the display 400, and the system control unit 314 determines that the renderer counter 312 has received the rewind start operation. Get value.

  In step S803, the system control unit 314 of the camcorder 300 starts rewinding the streaming data. Note that the rewinding is delayed and reproduced on the display 400 with a delay of the display delay time. In step S804, it is determined whether or not the server counter 313 matches the value of the renderer counter 312 acquired in step S802. On the other hand, if it is determined that the server counter 313 matches the value of the renderer counter 312 acquired in step S802, the process proceeds to step S805. In step S805, the streaming data is further rewound, and the streaming data being rewound is distributed. Thereby, the rewind playback from the position desired by the operator is started after the image playback (705) for the display delay time of the remote playback system and the rewind playback (706) for the rewind time (707). ).

<Processing flow in camcorder (rewind playback end operation)>
Next, the flow of processing when the operator visually recognizes the rewind playback end target image (710) on the display 400 and performs the rewind playback end operation (711) via the operation unit 315 on the camcorder 300 side. This will be described with reference to FIGS.

  When the operator visually recognizes the rewind playback end target image (710) on the display 400 and performs a rewind playback end operation via the operation unit 315 on the camcorder 300 side, the camcorder 300 displays the flowchart of FIG. The process shown is started.

  In step S901, the rewind reproduction end operation (711) is accepted, and it is determined whether or not the image display means provided in the camcorder 300 itself is valid as a display means (reproduction display state).

  If it is determined in step S901 that it is valid, the operator proceeds to step S905. In step S905, it is determined that the rewind playback end operation has been performed based on the display image on the image display means, and the rewind operation is terminated when the rewind playback end operation is received. In addition, distribution of streaming data corresponding to the value of the server counter 313 at that time is started.

  On the other hand, if it is determined in step S901 that it is not valid, the process proceeds to step S902. In step S902, the operator determines that the rewind end operation (711) has been performed based on the display image on the display 400, and acquires the value of the renderer counter 312 when the rewind playback end operation is accepted. .

  In step S903, the system control unit 314 of the camcorder 300 starts fast-forwarding. Note that the fast forward is played back on the display 400 with a delay of the display delay time. Furthermore, in step S904, it is determined whether or not the server counter 313 matches the value of the renderer counter 312 acquired in step S902. On the other hand, if it is determined that the server counter 313 matches the value of the renderer counter 312 acquired in step S902, the process proceeds to step S905. In step S905, distribution of streaming data corresponding to the value of the server counter 313 is started.

  As a result, the replayed image after rewinding to the rewinding position desired by the operator includes image reproduction (715) corresponding to the display delay time of the remote reproduction system and fast forward reproduction (716) corresponding to the fast-forwarding time. It is played back (717) later.

<Processing flow in camcorder (fast forward playback start operation)>
Next, in a remote playback system that distributes AV streaming data, a process for performing a fast-forward playback start operation on the camcorder 300 side based on the playback content that the operator is viewing on the display 400 side is used as a criterion. The flow will be described. The description will be made using a sequence chart (FIG. 7) and a flowchart (FIGS. 13 and 14) showing processing on the camcorder 300 side.

  When the operator visually recognizes the fast-forward playback start target image (1000) on the display 400 and performs a fast-forward playback start operation (1001) via the operation unit 315 on the camcorder 300 side, the camcorder 300 displays the flowchart of FIG. The process shown is started.

  In step S1101, the fast-forward playback start operation (1001) is accepted, and the streaming data is immediately determined without determining whether or not the image display means provided in the camcorder 300 itself is valid as a display means (playback display state). Start fast-forwarding. Specifically, the camcorder 300 starts the fast-forwarding of the streaming data from the value of the renderer counter 312 when the server counter 313 accepts the fast-forward playback start operation.

  As a result, fast-forward playback from the position desired by the operator is started after image playback (1003) for the display delay time of the remote playback system (1004).

<Flow of processing in camcorder (fast forward playback end operation)>
Finally, the flow of processing when the operator visually recognizes the fast-forward playback end target image (1010) on the display 400 and performs the fast-forward playback end operation (1011) via the operation unit 315 on the camcorder 300 side is shown in FIG. And it demonstrates using FIG.

  In step S1201, it is determined whether or not the image display means provided in the camcorder 300 itself is effective as a display means (reproduction display state).

  If it is determined in step S1201 that it is valid, the process proceeds to step S1205, where it is determined that the operator has performed a fast-forward end operation (1011) based on the display image on the image display means as a criterion. The image is played back when the fast forward playback end operation is accepted.

  On the other hand, if it is determined in step S1201 that it is not valid, the process proceeds to step S1202. In step S1202, it is determined that the operator has performed the fast-forward playback end operation (1011) based on the playback image on the display 400, and the value of the renderer counter 312 when the fast-forward playback end operation (1011) is received is determined. To win.

  In step S1103, the system control unit 314 of the camcorder 300 starts rewinding. Note that the rewinding is delayed and reproduced on the display 400 with a delay of the display delay time. Further, in step S1204, it is determined whether or not the server counter 313 matches the value of the renderer counter 312 acquired in step S1202. If they do not match, rewinding is continued. On the other hand, if it is determined that the server counter 313 matches the value of the renderer counter 312 acquired in step S1202, the process proceeds to step S1205.

  In step S1205, distribution of streaming data corresponding to the value of the server counter 313 is started. As a result, the replayed image after being fast-forwarded to the operator-desired fast-forwarding position is reproduced between the image reproduction (1015) for the display delay time of the remote reproduction system and the rewind reproduction (1016) for the rewind time. It will be played back later (1017).

  As is clear from the above description, the present embodiment includes a camcorder 300 and a display 400 connected via a wireless communication medium, and remote playback that distributes AV streaming data from the camcorder 300 to the display 400. Target the system. Even when the operator confirms the playback content (video, audio, etc.) on the display 400 and performs an operation related to the control of the playback content on the camcorder 300 side, the display delay time is taken into consideration. The camcorder 300 performs distribution after obtaining the distribution position. As a result, it is possible to perform control of a playback image (still, rewind playback, fast forward playback) that matches the operation of the operator.

[Second Embodiment]
In the first embodiment, the specific protocol for the wireless communication medium between the camcorder and the display is not particularly limited. On the other hand, for example, connection may be made using a specific protocol such as a protocol described in “AV Architecture” of UPnP Version 1.0.

  Specifically, a “control point” functional block defined by the protocol is arranged in the camcorder. Furthermore, when distributing streaming data for AV, a part of the protocol described in “AV Architecture” of UPnP Version 1.0 is extended. As a result, the display delay time can be automatically calculated. Details will be described below.

<Display (media renderer)>
FIG. 13 shows a block example showing a functional configuration of the display 1300 that reproduces streaming data distributed from the camcorder (described later) according to the present embodiment.

  Reference numeral 1301 denotes an AV signal processing unit that manages encoding, decoding, and format conversion of AV streaming data. Reference numerals 1302 and 1303 denote tuner units and tuner control units that control reception of various AV broadcasts, and reference numerals 1304 and 1305 denote input units and input control units that perform input from various external AV devices.

  Reference numerals 1306 and 1307 denote recording media and recording medium control units for recording / reproducing various kinds of information on externally connected storage media. Reference numerals 1308 and 1309 denote display units and display control units for displaying input AV streaming data. It is.

  Further, 1312 is a system control unit that controls the entire display 1300, and 1313 is an operation unit that controls a user interface. 1314 is a device profile storage means for storing an XML file in which “device profile (device information, service information)” described in “AV Architecture” of UPnP Version 1.0 is described.

<Camcorder (media server)>
FIG. 14 shows a block example showing a functional configuration of the camcorder 1400 according to the present embodiment.

  The camcorder 1400 according to the present embodiment has a configuration in which a device profile storage unit 1416 is added to the functional configuration block shown in FIG. The device profile storage unit 1416 stores an XML file in which “device profile (device information, service information)” defined by “AV Architecture” of UPnP Version 1.0 is described. In addition, the system control unit 1414 that controls the entire camcorder 1400 supports a “control point” function.

  On the XML file for describing “device profile (device information, service information)”, an area where extended information can be described is provided. In the area, “streaming data decoding delay time information” on the display 1300 side and “required time information for parsing the description information on the XML file” are stored in advance.

<Process flow in camcorder>
A processing procedure in the camcorder 1400 having the above configuration will be described with reference to a sequence chart between the camcorder 1400 and the display 1300 (FIG. 15) and a flowchart (FIGS. 16 and 17) showing a flow of processing on the camcorder 1400 side.

  In the state (1500) in which the communication path is established between the camcorder 1400 and the display 1300 via the wireless communication medium, the camcorder 1400 starts the processing shown in FIG.

  In step S1601, support protocol / format information of the display 1300 is acquired according to the procedure of “AV Architecture” of UPnP Version 1.0 (1501 and 1502 in FIG. 15). Support protocol / format information is stored in the device profile storage unit 1314 of the display 1300.

  At this time, the round trip time (td) is measured. Note that the round-trip delay time (td) at this time refers to the time from when the camcorder 1400 makes an acquisition request (1501) to the information received by the display 1300 until the information is received. That is, it refers to the time from transmission of Get Protocol Info () (1501) to reception of Protocol / Format list (1502).

  In step S1602, it is determined whether or not the support protocol / format acquired in step S1601 can be provided on the camcorder 1400 side.

  If it is determined in step S1602 that the supported protocol / format cannot be provided, the process advances to step S1608 to start inconsistency detection processing with the image reproduction application on the display 1300 side. Inconsistency detection processing, for example, in the image display means provided in the camcorder 1400 (display unit 1406, display control unit 1407, etc., functions related to display) displays a failure and stops the delivery of streaming data. That means.

  On the other hand, if it is determined in step S1602 that the support protocol / format can be provided, the process advances to step S1603 to acquire streaming data decoding delay time information (1503 and 1504 in FIG. 15).

  At this time, the round trip time (td) is measured. Note that the round-trip delay time (td) at this time is the time from when Get Decoder-Delay Info () (1503) is transmitted until the Format / Decoder-Delay list (1504) is received.

  In step S1604, it is determined whether the extension information (streaming data decoding delay time information) has been successfully acquired. If it is determined that the process has not succeeded, the process advances to step S1609 to shift to preparation for streaming data distribution without performing calculation processing of the transmission delay time of the communication path.

  On the other hand, if it is determined in step S1604 that the extension information (streaming data decoding delay time information) has been successfully acquired, the process proceeds to step S1605 to acquire the required purging time (1505 and 1506 in FIG. 15).

  At this time, the round trip time (td) is measured. Note that the round-trip delay time (tp) here refers to the time from transmission of Get Parsing-Time Info () (1505) to reception of Target-File / Parsing-time list (1506).

  In step S1606, it is determined whether or not the acquisition of the extended information (required time information for parsing the description information on the XML file) is successful. If it is determined that the extension information is not successful, the process proceeds to step S1609. In step S1609, the process proceeds to preparation for streaming data distribution without performing calculation processing of the transmission delay time of the communication path.

  On the other hand, if it is determined in step S1606 that the extension information (required time information for parsing the description information on the XML file) has been successfully acquired, the process proceeds to step S1607. In step S1607, transmission delay time is calculated. The transmission delay time is calculated according to the calculation formula (td−tp) / 2 based on the round trip delay time (td) and the required purging time (tp).

  When the transmission delay time calculation process in step S1607 is completed, the process advances to step S1609 to shift to preparation for streaming data distribution.

  FIG. 17 shows details of the distribution preparation process. In step S1701, it is determined whether the extension information has been successfully obtained. If it is determined that the extension information has been successfully acquired, the process advances to step S1702 to acquire the encoding delay time on the camcorder 1400 side. The encoding delay time is a time required for the camcorder 1400 to convert the DV format into the transmission format.

  In step S1703, the decoding delay time acquired in step S1603 and the transmission delay time calculated in step S1607 are added to the encoding delay time obtained in step S1702. Thereby, the display delay time between the camcorder 1400 and the display 1300 is calculated.

  On the other hand, if it is determined in step S1701 that the extension information has not been successfully acquired, the process advances to step S1707. In step S1707, the presence / absence of display delay time information set in the camcorder 1400 is determined. If it is determined that there is display delay time information, the process proceeds to step S1704. On the other hand, if it is determined that there is no display delay time information, the process advances to step S1705.

  In step S1704, the renderer counter 1412 is set to an initial value based on the server counter 1413 (1507 in FIG. 15).

  In step S1705, an AV transport setting and control instance ID acquisition processing conforming to the “AV Architecture” protocol procedure of UPnP Version 1.0 is performed (1508 in FIG. 15).

  In step S1706, distribution of AV streaming data is started (1509 in FIG. 15).

  As described above, if the display 1300 supports “AV Architecture” of UPnP Version 1.0, necessary information can be stored in an area on the XML file for “device profile” description. Specifically, “streaming data decoding delay time information on the display 1300” and “required time information for parsing the description information on the XML file” can be expanded and stored.

  As a result, it is possible to automatically detect the display delay time between the camcorder 1400 and the display 1300 with an implementation having a small impact on the functional block on the display 1300 side. That is, the temporal relationship between the renderer counter 1412 and the server counter 1413 can be corrected autonomously.

  When the display 1300 that does not support the expansion is supported, the display delay time information is stored in the camcorder 1400 in advance, so that the time-related correction of the counter is stored in the display delay. It becomes possible to perform statically using time as an index.

[Third Embodiment]
In the first and second embodiments, the case where a DV camcorder is used as an example of a media server has been described. However, the present invention is not particularly limited to this, for example, a disc player including a disc camcorder or the like. There may be.

  In the first and second embodiments, the case where a wireless communication path is used as a communication medium has been described. However, the present invention is not particularly limited to this, for example, IEEE 1394, IEEE 802.3, etc. A wired communication path may be used.

[Other Embodiments]
Note that the present invention can be applied to a system including a plurality of devices (for example, a host computer, an interface device, a reader, and a printer), and a device (for example, a copying machine and a facsimile device) including a single device. You may apply to.

  Another object of the present invention is to supply a storage medium storing software program codes for implementing the functions of the above-described embodiments to a system or apparatus, and the computer (or CPU or MPU) of the system or apparatus stores the storage medium. Needless to say, this can also be achieved by reading and executing the program code stored in the.

  In this case, the program code itself read from the storage medium realizes the functions of the above-described embodiments, and the storage medium storing the program code constitutes the present invention.

  As a storage medium for supplying the program code, for example, a floppy (registered trademark) disk, hard disk, optical disk, magneto-optical disk, CD-ROM, CD-R, magnetic tape, nonvolatile memory card, ROM, or the like is used. be able to.

  Further, by executing the program code read by the computer, not only the functions of the above-described embodiments are realized, but also an OS (operating system) operating on the computer based on the instruction of the program code. It goes without saying that a case where the function of the above-described embodiment is realized by performing part or all of the actual processing and the processing is included.

  Further, after the program code read from the storage medium is written into a memory provided in a function expansion board inserted into the computer or a function expansion unit connected to the computer, the function expansion is performed based on the instruction of the program code. It goes without saying that the CPU or the like provided in the board or the function expansion unit performs part or all of the actual processing, and the functions of the above-described embodiments are realized by the processing.

The streaming data distributed via the wireless communication path 103 from the camcorder 101 functioning as a distribution source server (media server) is reproduced on the display 102 functioning as a distribution destination reproduction apparatus (media renderer). It is a figure. It is a figure which shows a mode that the stationary instruction | indication was input into the camcorder, watching the display delivered from the camcorder 101 and reproduced | regenerated on the display. It is a figure which shows the block structure of the camcorder 300 (information processing apparatus) concerning the 1st Embodiment of this invention which comprises a remote reproduction | regeneration system. 6 is a diagram schematically showing a temporal relationship between a media server playback counter 313 and a media renderer playback counter 312 of the camcorder 300. FIG. FIG. 11 is a sequence chart showing a flow of processing when a static operation is performed on the camcorder 300 side based on the playback content that the operator is viewing on the display 400 side in the remote playback system. 7 is a flowchart showing a flow of processing when a static operation is performed on the camcorder 300 side based on the reproduction content that the operator is viewing on the display 400 side in the remote reproduction system. 10 is a sequence chart showing the flow of processing when a rewind playback start operation is performed on the camcorder 300 side based on the playback content viewed by the operator on the display 400 side as a criterion. It is a flowchart which shows the flow of a process in the case of performing rewinding reproduction | regeneration start operation in the camcorder 300 side on the basis of the reproduction | regeneration content which the operator is viewing on the display 400 side. 12 is a flowchart showing a flow of processing when an operator visually recognizes a rewind playback end target image (710) on the display 400 and performs a rewind playback end operation via the operation unit 315 on the camcorder 300 side. . FIG. 7 is a flowchart showing a processing flow when an operator visually recognizes fast-forward playback start target image playback (1000) on the display 400 and performs a fast-forward playback start operation (1001) via the operation unit 315 on the camcorder 300 side. is there. 12 is a flowchart showing a flow of processing when an operator visually recognizes a fast-forward playback end target image (1010) on the display 400 and performs a fast-forward playback end operation (1011) via the operation unit 315 on the camcorder 300 side. 12 is a flowchart showing a flow of processing when an operator visually recognizes a fast-forward playback end target image (1010) on the display 400 and performs a fast-forward playback end operation (1011) via the operation unit 315 on the camcorder 300 side. It is a figure which shows the block example which shows the function structure of the display which reproduces | regenerates the streaming data delivered from the camcorder concerning the 2nd Embodiment of this invention. It is a figure which shows the function structural block example of the camcorder 1400 concerning the 2nd Embodiment of this invention. 10 is a sequence chart between a camcorder 1400 and a display 1300. 12 is a flowchart showing a flow of processing on the camcorder 1400 side. It is a flowchart which shows the detail of a delivery preparation process.

Claims (12)

A server device capable of communicating with a playback device,
Input means for inputting an instruction for controlling a reproduction result reproduced in the reproduction device;
Obtaining means for distributing data from the server device and obtaining a reproduction delay time required for reproduction on the reproduction device;
A control unit that controls a distribution position of the distribution data based on a reproduction delay time acquired by the acquisition unit when a predetermined instruction is input through the input unit. apparatus. Distribution position recognition means for recognizing a distribution position when data is distributed from the server device, and reproduction position recognition means for recognizing the reproduction position of data being reproduced in the reproduction device,
The reproduction position recognition unit recognizes the reproduction position based on the reproduction delay time acquired by the acquisition unit and the distribution position recognized by the distribution position recognition unit. The server apparatus of description. The control unit controls the distribution position of the distribution data based on the reproduction position recognized by the reproduction position recognition unit when the predetermined instruction is input. Server device. Reproduction time acquisition means for acquiring the time required for the reproduction device to reproduce data from the reproduction device by communication;
Measuring means for measuring communication time with the playback device;
A conversion time acquisition means for acquiring the distribution data and acquiring a time required to convert the distribution data into a data format suitable for distribution;
The acquisition means acquires the reproduction delay time based on the time acquired by the reproduction time acquisition means, the time measured by the measurement means, and the time acquired by the conversion time acquisition means. The server device according to claim 1. When an instruction to pause playback processing is given via the input means, the control means returns the delivery position to the playback position recognized by the playback position recognition means when the instruction is input. The server device according to claim 2, wherein control is performed so that data corresponding to the distribution position is distributed. When the start of rewind playback is instructed via the input means, the control means starts from the data corresponding to the playback position recognized by the playback position recognition means when the instruction is input. The server device according to claim 2, wherein the server device is controlled to start returning. When the end of rewind playback is instructed via the input means, the control means uses data corresponding to the playback position recognized by the playback position recognition means when the instruction is input. The server device according to claim 2, wherein the server device is controlled to end the rewinding. When the start of fast-forward playback is instructed via the input means, the control means performs fast-forward from the data corresponding to the playback position recognized by the playback position recognition means when the instruction is input. The server device according to claim 2, wherein the server device is controlled to start. When the end of fast-forward playback is instructed via the input means, the control means fast-forwards with data corresponding to the playback position recognized by the playback position recognition means when the instruction is input. The server apparatus according to claim 2, wherein control is performed so as to end the process. A control method in a server device for distributing data,
An input step of inputting an instruction for controlling a reproduction result reproduced in the data reproduction device;
An acquisition step of distributing data from the server device and acquiring a reproduction delay time necessary for reproduction in the reproduction device;
A control step of controlling a distribution position of the distributed data based on the reproduction delay time acquired in the acquisition step when a predetermined instruction is input through the input step. Control method to do. A storage medium storing a control program for realizing the control method according to claim 10 by a computer. A control program for realizing the control method according to claim 10 by a computer.

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