JP2009021906A - Communication processing apparatus, information processing method, and computer program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent the transmission of double recorded contents in a configuration for transmitting photographing data of a camera to a specific apparatus and recording or outputting the data. <P>SOLUTION: In the configuration, in which a data transmitting device-cum-an imaging apparatus capable of performing a data communication transmits data to a data receiving device to be recorded into a storage means or streaming-reproduced, contents double held in the transmitting device and the receiving device are verified, and an identification mark indicative of duplicated contents is displayed on a display section of the transmitting device. The configuration prevents duplicated contents from being transmitted. In streaming playback, such a command is transmitted as not to transmit duplicated contents but to play back recorded contents of the receiving device. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a communication processing device, an information processing method, and a computer program. For example, the present invention relates to a communication processing apparatus, an information processing method, and a computer program that perform processing for transferring and recording camera image data to another receiving apparatus via a network.

  Data photographed by a digital still camera or a video camera is recorded on a recording medium mounted on the camera, for example, a flash memory, a medium such as an HD (Hard Disk) or a DVD (Digital Versatile Disc). However, the media mounted on the camera has a limited recording capacity, and data recorded on the media is often copied and stored on a medium of another device such as a PC.

  By using a network to send and record camera data, for example, to a device with large-capacity media such as a home PC, it is possible to record the media without worrying about the lack of camera media capacity. There is no need for cumbersome processing such as copying data.

  With regard to a streaming playback processing configuration in which data photographed on the go is transmitted to a home via a network and displayed on a TV at home to be shown to a family at home, the present applicant has filed an earlier patent application (Japanese Patent Application No. 2006-2006). 217727). However, when performing streaming playback processing, data played back on the receiving device side is generally discarded and not stored.

  Japanese Patent Laid-Open No. 2006-521761 discloses a related art that discloses a configuration for executing media storage of streaming data. Patent Document 1 discloses a configuration in which unrecorded data is redistributed by detecting data not recorded in the recording means on the receiving side in order to reliably record streaming playback data.

  However, in such a processing configuration, the receiving side apparatus needs to perform a difference confirmation process between the received data and the storage unit storage data, a redistribution request process, and the like. In addition, there is a problem in that it is necessary to redistribute data on the transmission side, and the load on both the transmitting and receiving apparatuses increases.

  When transferring a data file captured by the camera A to a remote device B instead of streaming delivery, the camera A uploads the captured data file to a service server installed on the Internet, and then the remote device B performs a service. Processing such as accessing a server and downloading a file is also possible. However, in such processing, it is essential to use some sort of intermediary service server.

  That is, a configuration that enables processing to directly transfer and record a photographic data file from a digital camera to a device at home, for example, a device such as a TV having a data storage unit and a communication function is not realized. When the transfer is performed, the process is performed through some sort of intermediary service server.

  Further, when performing file transfer from a digital camera to a receiving device such as a TV in this way, on the digital camera side on the data transmission side, information on what kind of file is stored in the storage unit of the transfer destination device, There is a possibility that duplicate data may be transferred because the transfer destination device cannot acquire information as to whether or not there is a storage means with sufficient free space for storing files, and transmission data cannot be recorded. May occur.

In Patent Document 2, information indicating whether or not the transfer is performed in the data transfer source device is recorded on the camera side, and it is determined whether or not to transfer based on the recorded information, thereby preventing unnecessary transfer. The structure to perform is disclosed. However, data storage for other devices is not limited to data transfer, but may be performed by directly setting media such as flash memory. In such cases, the camera does not record the data as transferred data. There is a problem that cannot be obtained.
Japanese Patent Laid-Open No. 2006-521761 JP 2006-1115024 A

  The present invention realizes a configuration in which image data of a digital camera such as a digital still camera or a video camera is transferred to a remote data receiving device via a network, and further, the free space of the data storage means from the data receiving device. Providing a communication processing device, an information processing method, and a computer program that can acquire file information that has been stored or stored, prevent duplicate transfer or storage error from occurring, and enable reliable file transfer and storage processing With the goal.

The first aspect of the present invention is:
An image acquisition unit for capturing image data;
A storage unit for recording an acquired image of the image acquisition unit;
A communication control unit for transmitting the recording data recorded in the storage unit or the image data acquired by the image acquisition unit to a data receiving device via a network;
Using a content list acquired from the data receiving device, a duplicate list creating unit for verifying duplicate content between the content held in the data receiving device and the content stored in the storage unit;
A display unit that displays display information in which a content identification mark that enables identification of the duplicate content is set on a selection screen of content to be transmitted to the data receiving device;
The communication processing apparatus is characterized by comprising:

  Furthermore, in an embodiment of the communication processing device of the present invention, the duplication list creation unit generates a content list of content stored in the storage unit and transmits the content list to the data receiving device, The configuration is such that duplicate content is verified by receiving a content list to which information that can identify the content held by the receiving device is added.

  Furthermore, in an embodiment of the communication processing device of the present invention, the duplication list creation unit sends a content list creation request to the data receiving device, receives a content list corresponding to the content held by the data receiving device, and receives it. The configuration is such that duplicate content is verified by collating the list with the content stored in the storage unit.

  Furthermore, in an embodiment of the communication processing device of the present invention, the communication processing device further obtains the free capacity information of the data receiving device side storage means by inquiring of the free capacity of the data receiving device side storage means to the data receiving device. A free data capacity acquisition unit to be acquired is provided, and the display unit is configured to display display information including the free data capacity on a selection screen of content to be transmitted to the data receiving device.

  Furthermore, in one embodiment of the communication processing device of the present invention, the communication processing device further includes a transfer time calculation unit that executes a transfer time calculation process in data transfer to the data receiving device, and the display unit includes: The transfer time information calculated by the transfer time calculation unit is displayed on a selection screen for content to be transmitted to the data receiving device.

  Furthermore, in an embodiment of the communication processing apparatus of the present invention, the communication processing apparatus further includes a request content information acquisition unit that acquires request content information from the data reception device, and the display unit receives data An identification mark for identifying the requested content acquired by the requested content information acquisition unit is displayed on a selection screen for content to be transmitted to the apparatus.

  Furthermore, in an embodiment of the communication processing device of the present invention, the communication processing device further includes a file transfer control unit that performs file transfer of the recording data recorded in the storage unit to the data receiving device. It is characterized by being.

  Furthermore, in one embodiment of the communication processing device of the present invention, the communication processing device further displays the recorded data recorded in the storage unit or the image data acquired by the image acquisition unit on the display unit. And a control unit that executes control processing of content transmission to the data receiving device via the network, and the content determined by the duplicate content list creation unit as duplicate content is transmitted without performing content transmission. The present invention is characterized in that a process for transmitting a reproduction start command to the data receiving device is executed.

  Furthermore, in one embodiment of the communication processing apparatus of the present invention, the control unit is configured to start content reproduction in the own apparatus with a delay from a transmission time of a reproduction start command to the data receiving apparatus. To do.

Furthermore, the second aspect of the present invention provides
A communication processing device that receives data from a data transmission device,
In response to a content list request from the data transmission device, a content list creation unit that generates and outputs a content list of stored content in the storage unit of the own device;
A communication control unit that transmits the content list created by the content list creation unit and receives data from the data transmission device;
The communication processing apparatus is characterized by comprising:

  Furthermore, in an embodiment of the communication processing device of the present invention, the content list creation unit creates a content list in which information that can identify the content held by the device is added to the content list received from the data transmission device. It is the structure which carries out.

  Furthermore, in an embodiment of the communication processing device of the present invention, the content list creation unit creates a content list corresponding to the content held by the device in response to a content list creation request received from the data transmission device. It is characterized by being.

  Furthermore, in an embodiment of the communication processing device of the present invention, the communication processing device further performs a reproduction process of the content held by the communication processing device when the reproduction mode information received from the data transmission device is a duplicate reproduction mode. And when the received playback mode information is not in the overlap playback mode, the playback control unit includes a playback control unit that executes a playback process of the content received from the data transmission device.

Furthermore, the third aspect of the present invention provides
An information processing method executed in an imaging device,
A communication control step in which the communication control unit transmits the recording data recorded in the storage unit or the image data acquired by the image acquisition unit to the data receiving device via a network;
A duplicate list creating step for validating duplicate content between the content held in the data receiving device and the stored content in the storage unit using a content list acquired from the data receiving device;
A display step for displaying display information in which a content identification mark enabling identification of the duplicate content is displayed on a content selection screen to be transmitted to the data receiving device;
There is an information processing method characterized by comprising:

  Furthermore, in one embodiment of the information processing method of the present invention, the duplication list creation step generates a content list of content stored in the storage unit and transmits the content list to the data receiving device, and stores data in the content list. It is a step of verifying duplicate content by receiving a content list to which information that makes it possible to identify content held by the receiving device is received.

  Furthermore, in one embodiment of the information processing method of the present invention, the duplication list creation step transmits a content list creation request to the data receiving device, receives a content list corresponding to the content held by the data receiving device, and receives the content list. It is a step of verifying duplicate content by collating the list with the content stored in the storage unit.

  Furthermore, in an embodiment of the information processing method of the present invention, the information processing method further includes: a free data capacity acquisition unit is configured to inquire about the free capacity of the data receiving device side storage means with respect to the data receiving device; A free data capacity acquisition step of acquiring free capacity information of the storage means, wherein the display step is a step of displaying display information including the free data capacity on a selection screen of content to be transmitted to the data receiving device; It is characterized by being.

  Furthermore, in an embodiment of the information processing method of the present invention, the information processing method further includes a transfer time calculating step in which the transfer time calculating unit executes a transfer time calculating process in data transfer to the data receiving device. The display step is a step of displaying the transfer time information calculated by the transfer time calculation unit on a selection screen for content to be transmitted to the data receiving device.

  Furthermore, in one embodiment of the information processing method of the present invention, the information processing method further includes a request content information acquisition step in which the request content information acquisition unit acquires the request content information from the data receiving device, The display step is a step of displaying an identification mark for identifying the requested content acquired by the requested content information acquisition unit on a selection screen for content to be transmitted to the data receiving device.

  Furthermore, in an embodiment of the information processing method of the present invention, the information processing method further includes a file in which the file transfer control unit performs file transfer of the recording data recorded in the storage unit to the data receiving device. It has a transfer control step.

  Furthermore, in an embodiment of the information processing method of the present invention, the information processing method further includes: a display unit configured to record data recorded by the control unit in the storage unit or image data acquired by the image acquisition unit; And a control step of executing content transmission control processing for the data receiving device via the network, and the control step determines the content determined to be duplicate content by the duplicate content list creation unit. A process of transmitting a content reproduction start command to the data receiving apparatus without performing content transmission is performed.

  Furthermore, in one embodiment of the information processing method of the present invention, the control step is characterized in that content reproduction in the own device is started with a delay from a transmission time of a reproduction start command to the data receiving device.

Furthermore, the fourth aspect of the present invention provides
An information processing method executed in a communication processing device that receives data from a data transmission device,
A content list creation step for generating and outputting a content list of content stored in the storage unit of the device in response to a content list request from the data transmission device;
A communication control step in which a communication control unit performs transmission of the content list created by the content list creation unit and data reception from the data transmission device; and
There is an information processing method characterized by comprising:

  Furthermore, in an embodiment of the information processing method of the present invention, the content list creation step creates a content list in which information that makes it possible to identify the content held by the device is added to the content list received from the data transmission device. It is a step to perform.

  Furthermore, in one embodiment of the information processing method of the present invention, the content list creating step creates a content list corresponding to the content held by the device in response to a content list creation request received from the data transmitting device. It is characterized by being.

  Furthermore, in an embodiment of the information processing method of the present invention, the communication processing method further includes: when the reproduction control unit receives the reproduction mode information received from the data transmission device in a duplicate reproduction mode; A content reproduction process is performed, and when the received reproduction mode information is not in the overlap reproduction mode, a reproduction control step for performing reproduction processing of the content received from the data transmission device is provided.

Furthermore, the fifth aspect of the present invention provides
A computer program for executing information processing in an imaging apparatus;
A communication control step for causing the communication control unit to transmit the recording data recorded in the storage unit or the image data acquired by the image acquisition unit to the data receiving device via a network;
A duplicate list creating step for causing a duplicate list creating unit to verify duplicate content between the content held in the data receiving device and the stored content in the storage unit using a content list acquired from the data receiving device;
A display step of displaying display information in which a content identification mark enabling identification of the duplicate content is displayed on a selection screen of content to be transmitted to the data receiving device on the display unit;
There is a computer program characterized by comprising:

Furthermore, the sixth aspect of the present invention provides
A computer program that executes information processing in a communication processing device that receives data from a data transmission device,
A content list creation step for causing the content list creation unit to generate and output a content list of the stored content in the storage unit of the own device in response to a content list request from the data transmission device;
A communication control step for causing the communication control unit to transmit the content list created by the content list creation unit and to receive data from the data transmission device;
There is a computer program characterized by comprising:

  The computer program of the present invention is, for example, a computer program that can be provided by a storage medium or a communication medium provided in a computer-readable format to a general-purpose computer system that can execute various program codes. . By providing such a program in a computer-readable format, processing corresponding to the program is realized on the computer system.

  Other objects, features, and advantages of the present invention will become apparent from a more detailed description based on embodiments of the present invention described later and the accompanying drawings. In this specification, the system is a logical set configuration of a plurality of devices, and is not limited to one in which the devices of each configuration are in the same casing.

  According to the configuration of one embodiment of the present invention, for example, a data transmission device that is an imaging device such as a video camera or a still camera and capable of data communication transmits data to a remote data reception device via a network. In the configuration for recording in the storage means and streaming playback, the content transmitting apparatus and the data receiving apparatus perform verification processing of the duplicated content, and the duplicate content is displayed on the display unit on the data transmitting device side. An identification mark indicating that the content is duplicated is displayed. With this configuration, transmission of duplicate content can be prevented. Also, in streaming playback, if the content is duplicated, the playback command for starting playback of the recorded content on the receiving device side is transmitted without transmitting the content. With this configuration, parallel reproduction in which the content reproduction timing is synchronized between the data transmitting apparatus and the receiving apparatus is realized.

Details of the communication processing apparatus, information processing method, and computer program of the present invention will be described below with reference to the drawings. The present invention realizes a process of transferring and recording a data file composed of shooting data of a digital camera such as a digital still camera or a digital video camera to a remote data receiving device via a network. is there. The description will be made according to the following items.
1. System configuration example2. 2. Data transmission side (camera) processing 3. Data receiving side (data receiving device) processing 4. Router processing and packet transmission / reception processing 5. Data transfer based on information provision from the data receiving device to the data transmitting device Streaming playback control based on confirmation of content held by data receiver

[1. System configuration example]
First, referring to FIG. 1, a system configuration example of a data communication system according to an embodiment of the present invention will be described. This system is based on the configuration shown in Japanese Patent Application No. 2006-217727, which is an earlier patent application of the present applicant. As shown in FIG. 1, in a home A120, a user A takes a picture with a video camera A122, transfers the shot data to a home B140 that is remote from the home A, and receives a receiving device (for example, a memory) of the home B140. (TV provided with means and communication function) 144 is a data communication system in which transfer data is received and recorded in the storage means. In the embodiment, the data transmission device is described as a video camera, but a digital still camera that captures only a still image may be used.

  The example shown in the figure shows a configuration example in which an IP network A 121 and an IP network B 141 as home networks are configured in the home A 120 and the home B 140, respectively, and the individual home networks are connected by the Internet 130. The IP network B 141 may be a network system that can be connected to the Internet 130 such as a public wireless LAN (hotspot).

[2. Data transmission side (video camera) processing]
In the IP network A121 of the home A120, the user A performs shooting using the digital video camera A122. In parallel with the shooting process, the video camera A122 records a data file composed of video and audio included in the shooting data in a recording unit in the video camera A122, generates a packet including the recorded file, and transmits the packet via the communication interface. Output to the network.

  The video camera A 122 has a communication interface (I / F) for connecting to an IP (Internet Protocol) network such as a wireless LAN such as IEEE802.11g or a wired LAN such as Ethernet (registered trademark) (Ethernet). . This communication interface is not necessarily integrated with the video camera A 122 itself, and may be an external module.

  The video camera A122 is connected to an IP network A121 such as a home network through a communication I / F. The video camera A122 executes file transfer via the IP network A121. The video camera A122 has an encoder that performs an encoding (compression encoding) process on the captured video / audio, and the encoded data is recorded in a recording unit in the video camera A122. Furthermore, a packet containing the recording data is generated and sent to the IP network A 121 via the communication interface.

  Note that the protocol on the IP network A 121 may be, for example, a connection type TCP (Transport Control Protocol) or a connectionless type UDP (User Datagram Protocol), and the communication protocol is particularly limited. do not do.

  Note that it may be difficult in terms of network bandwidth to send the same quality as the video / audio recorded on a DV tape or HDD / DVD to the network as it is. For example, this is a case where the photographic data is a large amount of data such as high vision data. In such a case, the video camera A122 performs encoding processing with reduced quality (frame rate, resolution, image quality, sound quality, etc.), reduces the amount of data, lowers the bit rate, and transmits it to the IP network A121. May be.

  A router A123 as a network relay device is connected to the IP network A121, and transmission data from the video camera A122 is output to the Internet 130 via the router A123. Note that a “destination IP address” as a transmission destination address needs to be set in the data packet transmitted to the Internet A 130. This “destination IP address” is the address of the router B 142 as the network relay device of the home B 140. Details of this address setting process will be described later.

  In the example shown in FIG. 1, the home network A120 and the home network B140 are configured as the home network IP network A121 and the IP network B141, respectively, and the individual home networks are connected by the Internet 130. As described above, the IP network A 121 and the IP network B 141 may be network systems that can be connected to the Internet 130 such as a public wireless LAN (hotspot). FIG. 2 shows an example in which the home A 120 shown in FIG. 1 is replaced with a public wireless LAN (hotspot) 126. Transmission data empty to the video camera 122 is output to the Internet 130 via an AP (access point) 127 installed in a public wireless LAN (hotspot) 126.

[3. Data receiving side (data receiving device) processing]
Next, processing of the data receiving apparatus B 143 on the home B 140 side that receives data from the home A 120 via the Internet 130 and records the received data in the storage unit 144 will be described. The data reception device B 143 performs data reception processing via the network, analysis of received data, and the like, and performs communication control by communication with the data transmission source and data recording processing for the storage unit 144.

  The data receiving device B 143 is a device that receives a file including video / audio transmitted from the video camera A 122 by file transfer. For example, a communication interface (I / F) connected to the IP network B 141 such as a wireless LAN such as IEEE802.11g or a wired LAN such as Ethernet (Ethernet) is provided. It is connected to an IP network B 141 such as a network, and receives data via the router 142.

  The data receiving device B 143 receives data from an external device (in this example, the video camera A 122) via the IP network B 141, and records the received data in the storage unit 144.

  The data receiving device B 143 may have a configuration in which the storage unit 144 is included in the data receiving device B 143 itself, such as a configuration integrated with an output unit such as a TV or a storage unit 144 such as a hard disk.

[4. Router processing and packet transmission / reception processing]
Next, processing of the router A 123 and router B 142 as network relay devices shown in FIG. 1 and communication packet transmission / reception processing via the network will be described. The IP network A121 to which the video camera A122 is connected and the IP network B141 to which the data receiver B143 is connected are connected by a global IP network (hereinafter referred to as the Internet) 130 such as the Internet.

  Between the IP network A 121 and the Internet 130, and between the IP network B 141 and the Internet 130, a router A 123 such as a broadband router and a router B 142 are installed.

  These routers generally provide a firewall function for filtering IP packets from the Internet and a NAT (Network Address Translator) function for converting an address between a global IP address of the Internet and a private IP address in the home network.

Hereinafter, an IP packet transmission / reception sequence from the video camera A 122 to the data reception device B 143 will be described with reference to FIG. FIG. 3B shows address transition of the communication packet.
(B1) is a transmission packet from the video camera A122 to the data receiving device B143,
(B2) is a transmission packet from the data reception device B143 to the video camera A122,
Address transitions in these packets are shown respectively. In the figure, PIP is a private IP address in IP network A or IP network B, and GIP is a global IP address.

First, a transmission packet from the video camera A122 to the data reception device B143 shown in (B1) will be described. First, the video camera A122 as a data transmission side device
A packet 221 in which “destination IP address” is the global IP address of router B 142 and “source IP address” is the private IP address of video camera A 122 is generated and sent to IP network A 121.

When the IP network A121 is a private IP address network, the IP packet sent from the video camera A122 to the IP network A121 is converted by the router A123 into the global IP address of the router A123 (NAT). )do it,
A packet 222 having the “destination IP address” set to the global IP address of the router B 142 and the “source IP address” set to the global IP address of the router A 123 is generated and transferred to the Internet 130.
If the IP network A 121 is a global IP address network, it is not necessary to perform address conversion.

The IP packet transferred to the Internet 130 arrives at the router B 142 indicated by “Destination IP address”.
Next, the router B 142 performs packet transfer control based on the source IP address and the like. For example, if the IP packet is not set to be transferred, the IP packet is discarded by the firewall function. If transfer is set in the IP network B 141, transfer is performed according to the setting. At this time, if the IP network B is a private IP address network, the router B 142 converts the “destination IP address” of the received packet into the private IP address of the data receiving device B 143 and transfers it to the IP network B 141. That is,
A packet 223 in which the “destination IP address” is set to the private IP address of the data receiver B 143 and the “source IP address” is set to the global IP address of the router A 123 is generated and output to the IP network B 141.
The packet output to the IP network B141 is delivered to the data receiving device B143. If the IP network B 141 is a global IP address network, it is not necessary to perform address conversion.

  For example, in the case of a request for changing the bit rate, it is necessary to perform communication from the data receiving apparatus B 143 to the video camera 232. The address transition of the communication packet in this case will be described with reference to FIG.

First, the data receiving device B 143 as a data transmitting side device
A packet 231 in which the “destination IP address” is set to the global IP address of the router A 123 and the “source IP address” is set to the private IP address of the data receiving device B 143 is generated and transmitted to the IP network B 141.

When the IP network B 141 is a private IP address network, the IP packet sent from the data receiving device B 143 to the IP network B 141 is converted by the router B 142 into the “source IP address” into the global IP address of the router B 142 ( NAT)
A packet 232 in which the “destination IP address” is set to the global IP address of the router A 123 and the “source IP address” is set to the global IP address of the router B 142 is generated and transferred to the Internet 130.
If the IP network B 141 is a global IP address network, it is not necessary to perform address conversion.

The IP packet transferred to the Internet 130 arrives at the router A123 indicated by “Destination IP address”.
Next, the router A123 performs packet transfer control based on the source IP address and the like. For example, if the IP packet is not set to be transferred, the IP packet is discarded by the firewall function. When the transfer is set in the IP network A121, the transfer is performed according to the setting. At this time, if the IP network A 121 is a network with a private IP address, the router A 123 converts the “destination IP address” of the received packet into the private IP address of the video camera 122 and transfers it to the IP network A 121. That is,
A packet 233 in which “destination IP address” is the private IP address of the video camera 122 and “source IP address” is the global IP address of the router B 142 is generated and output to the IP network A 121.
The packet output to this IP network A 121 is delivered to the video camera 122. If the IP network A 121 is a global IP address network, it is not necessary to perform address conversion.

In this way, the IP packet transmitted from the video camera A122 is delivered to the data reception device B143, and the IP packet transmitted from the data reception device B143 is delivered to the video camera A122. In the above processing,
When transmitting a packet from the video camera A122 to the data receiving device B143,
(A) the video camera A122 knows the IP address of the router B142;
(B) Setting for the router B 142 to transfer the IP packet to the data receiving device B 143,
These processes are necessary.

When data transmission is performed from the data receiving device B143 to the video camera A122,
(C) the data receiving device B 143 knows the IP address of the router A 123;
(D) Setting for the router A 123 to transfer the IP packet to the video camera 122;
These processes are necessary.

The processes (a) to (d) will be described. Note that the processes (a) and (c) and the processes (b) and (d) differ only in the execution subject of the processes, and the processes themselves are the same, so the video receiver A 143 receives the data reception device B 143. Processing required when sending a packet to
(A) the video camera A122 knows the IP address of the router B142;
(B) Setting for the router B 142 to transfer the IP packet to the data receiving device B 143,
These processes will be described.

First, processing (a) the video camera A 122 knows the IP address of the router B 142,
This process will be described with reference to FIG. In order for the video camera A 122 to know the global IP address of the router B, DNS (Domain Name Service) is used.

  DNS usage processing will be described with reference to FIG. The DNS server 251 shown in FIG. 4 holds a host name IP address correspondence table 252 that is a correspondence table of host names and IP addresses as a database. When the DNS server 251 receives an address inquiry specifying a host name from a network connection device, the DNS server 251 searches the table 252 to obtain an IP address registered in association with the host request and notifies the inquiry device. To do. As a result, even if the IP address is not remembered, it becomes possible to obtain the IP address of the target device using a host name (www.sony.co.jp, etc.) that is easier for humans to understand. Access to the target host used and packet transmission are possible. By setting the acquired IP address as the destination address for the transmission packet, data transmission to the target host becomes possible.

  In general, for example, the global IP address 252 of the router B 143 at the entrance of the home network is often fixed and not allocated. For example, an IP address is dynamically set by a DHCP server. In the case where the fixed IP address is not set and the IP address is dynamically set in this way, the dynamically set IP address is acquired using Dynamic DNS. Dynamic DNS is a service that dynamically updates the database managed by the DNS server by notifying the DNS server of the currently set IP address each time.

  The data receiving apparatus B 143 shown in FIG. 4 has a dynamic DNS global IP address notification function, and when the IP address is dynamically set by the DHCP server when the data receiving apparatus B 143 is activated, the data receiving apparatus is set in the DNS server 251. The host name of B143 and the global IP address of the router B142 are notified.

  As long as the host name of the data receiving device B 143 is known, the video camera A 122 acquires the global IP address of the router B 142 from the DNS server 251 using the DNS mechanism even if the global IP address of the router B 142 is not fixed. be able to.

That is, the video camera A 122 transmits an address inquiry based on the host name of the data receiving device B 143 to the DNS server 251, and the address registered in the table 252 in association with the host name of the data receiving device B 143 from the DNS server 251. As a result, the global IP address of the router B 142 can be acquired. An IP packet in which the acquired global IP address of the router B 142 is set as a destination address is generated and output to the network.
This process
(A) the video camera A122 knows the IP address of the router B142;
It is a solution process.

next,
(B) Setting for the router B 142 to transfer the IP packet to the data receiving device B 143,
This process will be described with reference to FIG. Even if the video camera A122 knows the global IP address of the router B142 from the DNS server described above, sets the global IP address of the router B, generates a message packet for signaling and a packet of actual streaming data, and outputs it. Generally, the router B 142 has a firewall function and discards the IP packet.

  That is, the packet is not transferred to the data receiving device B 143 unless appropriate port forwarding is set in the router B 142. Of course, the user may manually set the port forwarding in the router, but there are cases where it is not preferable because the setting is complicated or a wrong setting causes a security hole.

Therefore, in this embodiment, port forwarding is dynamically set in the router B 142 using a UPnP (Universal Plug and Play) mechanism. UPnP provides a mechanism that allows setting of router port forwarding. For example,
“Forward packets addressed to the TCP port number 80 of the router from the Internet to the TCP port number 10080 of the PC in the internal network”
Such a setting can be made by sending a UPnP message from the PC to the router. Most recent broadband router products support UPnP.

  The data receiving apparatus B 143 has a function for performing the above UPnP port forwarding setting. The data reception device B 143 automatically sets a signaling message port at a predetermined timing, for example, when the power is turned on. That is, to the router B 142, “transfers a packet from the Internet to the TCP port number xx of the router B 142 to the TCP port number aaa of the data receiving device 143 in the internal network (IP network B 141)”. Send UPnP message for setting.

  When the signaling port and the streaming data port are different, after the signaling is established, a UPnP message for setting the streaming data port is transmitted from the data receiving device B 143 to the router B 142. The signaling port and the streaming data port may be set individually. The port forwarding setting may be set while dynamically changing as appropriate in a method that takes security into consideration.

  In the video camera A122, as long as the name (URL) on the data receiving device B 143 side and its signaling port number are known in advance, the signaling message can be reliably transmitted to the data receiving device B 143 via the router B. . The IP packet transmitted from the video camera 122 to the router B 142 is set to the port number for which the port forwarding is set. The router B 142 receives the packet received for the port number according to the port forwarding setting. Transmit to device B143.

As described above, in order for the video camera A 122 to reliably transmit data to the data receiving device B 143, (1) a host name (URL) on the data receiving device B 143 side in advance.
(2) Signaling port number to be set in router B It is necessary to acquire these pieces of information. As this information acquisition method, for example, an authentication process between the video camera A 122 and the data receiving device B 143 can be applied.

For example, the data receiving apparatus executes the authentication process between both the video camera A 122 and the data receiving apparatus B 143 and confirms that the data receiving apparatus B 143 confirms that the video camera A 122 is a legitimate apparatus. From B143 to the video camera A122,
(1) Host name (URL) on the data receiving device B 143 side
(2) A signaling port number to be set in the router B is transmitted, and the video camera A 122 is configured to record and hold these pieces of information in a memory.

  The authentication processing method is executed by mutual short-range communication. Specifically, for example, a “simple authentication” button is set for both the video camera A 122 and the data reception device B 143, and these two devices are brought close to each other and simultaneously pressed by pressing the “simple authentication” button. Communicate. By this neighboring wireless communication, an authentication process is executed, and the above information (1) and (2) is provided from the data receiver B 143 to the video camera A 122 on condition that the authentication is established.

Alternatively, the URL (host name) and port number of the data receiving device B 143 sold as a product, that is,
(1) Host name (URL) of the data receiving device
(2) Signaling port number to be set in the router Enclosed with a document containing these pieces of information, and when the user purchases a device, records the information in the memory of the video camera used by the user It is good also as a structure.

Or
(1) Host name (URL) of the data receiving device
(2) Port number for signaling to be set in the router The user on the data receiving apparatus side teaches the user of the video camera A122 by telephone or e-mail, and the user of the video camera A122 manually sends them to the video camera A122. It is good also as a structure of setting.

In this way, from the data transmission side device (in this embodiment, the video receiver) to the data transmission side device (in this embodiment, the video camera),
(1) Host name (URL) of the data receiving device
(2) Signaling port number to be set in the router Provide these pieces of information, and the data transmission side device (video camera in this embodiment) holds these pieces of information and performs processing using these pieces of information Thus, the data transmission side device (video camera in this embodiment) can reliably execute data transmission to the data reception side device (data reception device in this embodiment).

Specifically, as described with reference to FIG. 4, the data transmission side device (video camera in this embodiment)
(1) Host name (URL) of data receiving device B 143
Using this information, the global IP address of the router B 142 is acquired from the DNS server, and in addition to the global IP address, the information (2) provided from the data receiving device 143 side, that is,
(2) Signaling port number to be set in the router By generating this information, that is, an IP packet specifying the global IP address and port number of the router B 142 as a destination and outputting it to the network, the packet is sent to the router B 142 In addition, the packet is transferred from the router 142 to the data reception device B 143 by port forwarding, and the data reception device B 143 can receive the transmission packet from the video camera A 122.

As described above, the data transmission side device (video camera in this embodiment) is connected from the data reception side device (data reception device in this embodiment) side.
(1) Host name (URL) of the data receiving device
(2) Signaling port number to be set in the router,
By adopting a configuration for receiving these pieces of information, and generating and transmitting packets to which these pieces of information are applied, data transmission to a specific receiving device becomes possible.

  The above description is, for example, the setting for realizing data transmission from the video camera A122 to the data receiving device 143 in the configuration shown in FIG. 1, but from the data receiving device B143 in the reverse direction to the video camera A122. Data transmission for can also be handled by performing the same processing as described above for the reverse route. However, when the data reception device B 143 receives a transmission packet from the video camera 122, the transmission source address recorded in the transmission packet can be acquired, and an address acquisition process from the DNS server is not necessary. All that is necessary is to set port forwarding on the router A 123 side. By these processes, communication of both terms becomes possible.

[5. Data transfer based on information provision from data receiving device to data transmitting device]
Next, data transfer processing based on provision of information such as stored file information and autumn capacity of storage means from the data receiving device to the data transmitting device will be described. For example, when transferring a file from a digital camera to a receiving device such as a TV, the data transmission side digital camera stores information on what kind of file is stored in the storage unit of the transfer destination device, and the transfer destination device. Obtains information as to whether or not there is a storage means with sufficient free space for storing the file, displays this information on the display on the data transmission device (camera) side, and performs data based on the confirmation of the user It is the structure which performs transfer.

FIG. 5 shows a display example of user interface (UI) information displayed on a display unit of a data transmission apparatus (camera) that performs data transmission. In the UI information 300, as data transfer processing information 301,
(A) Total number of transfer data files (b) Total data capacity of transfer data and free capacity of storage means on the data receiving device side,
(C) Expected transfer processing time of transfer data These pieces of information are displayed. The free capacity of the storage unit on the data receiving device side is information acquired from the data receiving device in communication between the data transmitting device and the data receiving device before the content file transmission processing.

Further, the UI information 300 displays content thumbnails 302 generated from representative images corresponding to files stored in the storage unit of the data transmission device (camera) and content identification marks 311 to 313.
There are the following types of content identification marks.
(A) Content identification mark 311: Mark indicating content stored (duplicated) in the transfer destination device (b) Content identification mark 312: Content to be transferred (selected by the user) to the transfer destination device c) Content identification mark 313: A mark indicating that the transfer destination user has notified “I want this content” when simultaneously viewing by playback streaming. Among these content identification marks, (a The content identification mark 311 and (c) the content identification mark 313 are displayed based on information acquired from the data reception device in communication between the data transmission device and the data reception device before the content file transmission processing. This information acquisition process will be described later.

  Further, the UI information 300 includes a transfer start button 321 operated by the user when starting data transfer from the data transmitting apparatus, and a disconnect button operated by the user when stopping data transfer from the data transmitting apparatus. In addition, a page feed button for page-turning the displayed thumbnail is displayed.

  As described above, the content identification mark 311 is a mark indicating the content stored (duplicated) in the transfer destination device. In order to display the duplicate content identification mark, it is necessary to communicate between the data transmission device and the data reception device and acquire information about the content held by the data reception device before the content file transmission processing. It becomes. Two processing examples of this information acquisition processing will be described with reference to FIGS.

(Processing example 1)
First, processing example 1 for confirming (overlapping) content stored in a transfer destination device and displaying the content identification mark 311 will be described with reference to FIG. This processing is performed by communication between the data transmission device and the data reception device before the content file transmission processing.

As shown in FIG. 6, the digital camera A, which is a data transmission device,
Content [A-2],
Content [A-3],
Content [A-4],
Is stored in the storage unit inside the camera,
The data receiving device B
Content [A-1],
Content [A-2],
Content [C-1],
Content [C-2],
Is stored in the storage means on the data receiving apparatus B side. [A-1] and [A-2] mean data acquired from the digital camera A, and “C-1” and [C-2] are devices C different from the digital camera A. Indicates that the data was received from.

As shown in the lower part of FIG. 6, in the processing example 1, first, in step S11, the digital camera A sends a content list corresponding to the content file stored in the storage unit of the digital camera A to the data receiving device B. Send. In this example,
Content [A-2],
Content [A-3],
Content [A-4],
These content identifier lists are transmitted to the receiving device.

The data receiving device B compares the content list from the digital camera A with the content stored in the storage means on the data receiving device B side, selects the one that overlaps with the content held in its own storage unit, In step S13, a content list in which information indicating duplicate content is set is returned to the digital camera A. In this processing example,
Content [A-2]: ○ (duplication),
Content [A-3]:
Content [A-4]:
Information indicating that the content [A-2] has already been recorded in the storage unit on the data receiving device B side is transmitted to the digital camera A as described above.

When the digital camera A receives the content list in which the duplicate information is recorded from the data receiving device B, the digital camera A generates a duplicate content list including only the duplicate content and records it in the storage unit. In this example,
Content [A-2] is set in the duplicate content list.
The digital camera A refers to the information recorded in the duplicate content list, and displays a content identification mark 311 shown in FIG. 5, that is, a mark indicating the content stored (duplicated) in the transfer destination device. indicate.

(Processing example 2)
Next, with reference to FIG. 7, processing example 2 for confirming (duplicated) content stored in the transfer destination device and displaying the content identification mark 311 will be described. The data held by the digital camera A, which is the data transmission device, and the data held by the data referee device Bk are the same data as in the first processing example.

As shown in the lower part of FIG. 7, in the processing example 2, first, the digital camera A transmits a content list request to the data receiving device B in step S21. When receiving the content list request from the digital camera A, the data receiving apparatus B selects only the content received from the digital camera A from the contents stored in the storage means on the data receiving apparatus B side in step S22. A content list composed of the selected content is generated and returned to the digital camera A in step S23. In this processing example,
Content [A-1],
Content [A-2],
The content list as described above is transmitted to the digital camera A.

When the digital camera A receives the content list from the data receiving device B, in step S24, the digital camera A generates and stores a duplicate content list consisting only of duplicate content in step S25 compared with the content stored in its storage unit. To record. In this example,
Content [A-2] is set in the duplicate content list.
The digital camera A refers to the information recorded in the duplicate content list, and displays a content identification mark 311 shown in FIG. 5, that is, a mark indicating the content stored (duplicated) in the transfer destination device. indicate.

  Next, an overall sequence for performing content transfer processing by providing information from the data receiving device to the data transmitting device in advance will be described with reference to the flowchart shown in FIG.

  First, in steps S101 and S201, the data transmission device (digital camera A) and the data reception device (data reception device B) are connected. That is, the communication path between the data transmission device and the data reception device is set by the processing described above with reference to FIG. Next, in step S102, the data transmission apparatus transmits a request for acquiring the free capacity information of the storage unit on the data reception apparatus side to the data reception apparatus.

  When the data reception device receives the free space request in step S202, the data reception device checks the free space of the storage means on the data reception device side in step S203, and returns (responses) the free space information to the data transmission device side in step S204. . In step S103, the data transmitting apparatus receives the free capacity information from the data receiving apparatus side. This free capacity information is used as information displayed in the data transfer processing information 301 in the UI information 300 described above with reference to FIG.

  The UI information 300 shown in FIG. 5 is a screen for selecting a content to be transferred by the user, and a content identification mark 312 is set for the selected content as described with reference to FIG. The free capacity information of the storage means of the partner apparatus acquired by the above process, the total number of files and the data capacity of the content selected by itself can be displayed as the data transfer process information 301. For example, information such as “08files 2.2 / 24.0 GB” is a set of (number of files / total data capacity / free data capacity).

  As a result, the user can be informed of the free data capacity in the data transfer destination device, and when selecting exceeding the free data capacity, an error is displayed so that the user cannot select any more. Is also possible.

  Next, the data transmission device transmits a content list request for acquiring content information stored in the storage unit on the data reception device side to the data reception device in step S104. When receiving the content list request in step S205, the data receiving apparatus selects the content provided and stored from the data transmitting apparatus (video camera A) from the contents stored in the storage unit on the data receiving apparatus side in step S206. Then, a content list is created, and the generated list is transmitted to the data transmitting apparatus in step S207. Upon receiving the content list in step S105, the data transmission device generates a duplicate content list and stores it in the storage unit.

  This process corresponds to the process described above with reference to FIG. 7. Based on the content duplication list obtained by this process, the display process of the content identification mark 311 described above with reference to FIG. Will be made. In the flow shown in FIG. 8, the duplicate content information acquisition process described with reference to FIG. 7 is applied, but the content duplicate list is generated by applying the process described with reference to FIG. It is good also as a structure.

  The display of the content identification mark 311 eliminates unnecessary processing such as re-sending the content stored in the data transfer destination device. In addition, an identification mark indicating the situation may be displayed for the data that has been sent in the past but has been deleted on the data transfer destination device side. In other words, a distinction is made in the duplicate list, such as “duplicate and still saved / sent in the past but not saved anymore”, and a different mark is displayed on the UI information display screen shown in FIG. Thus, for example, waste such as a user repeatedly sending the same content does not occur.

  Next, in step S106, the data transmitting apparatus transmits the transfer time calculation data to the data receiving apparatus. This is a process of transferring an extremely small amount of data from the data transmitting apparatus side to the data receiving apparatus and calculating the average transfer rate of the network. For example, in step S106, 10 MB of data is transferred from the data transmission apparatus (digital camera A) side. In step S208, as soon as all data is received by the data reception apparatus, in step S209, a transfer completion message is transmitted to the data transmission apparatus ( To digital camera A).

In step S107, the data transmission apparatus (digital camera A) calculates an average transfer time based on the time taken to receive the message. For example, if the time taken to receive a message is 5.0 seconds,
10 MB / 5.0 sec = 16.0 Mbps,
Calculate the average transfer rate as

  Based on this average transfer rate, the transfer time when file transfer is performed is calculated and used as information displayed in the data transfer processing information 301 in the UI information 300 described above with reference to FIG. The On the screen for selecting (adding / deleting) the content that the user wants to transfer, the total data capacity is displayed, and the estimated time to transfer all is updated and displayed each time. For example, if the average bandwidth of the network is calculated as 16.0 Mbps, and the total data capacity is 1.0 GB, the expected time to complete the transfer is 8,000 Mb / 16.0 Mbps = 500 sec. indicate.

  In this flow, the transfer time calculation data is transmitted in step S106. However, without transmitting such special data, the data transmitted / received in another previous communication sequence is transferred. It is good also as a structure utilized as data for time calculation.

In step S108, the data transmitting apparatus generates the UI information 300 described above with reference to FIG. 5 using the information obtained from the data receiving apparatus, and displays it on the display unit of the data transmitting apparatus. That is, in the UI information 300, as the data transfer processing information 301,
(A) Total number of transfer data files (b) Total data capacity of transfer data and free capacity of storage means on the data receiving device side,
(C) Expected transfer processing time of transfer data These pieces of information are displayed. Further, a content identification mark 311 indicating the content stored (duplicated) in the transfer destination device is displayed. In addition, a content identification mark 312 is displayed for the content to be transferred to the transfer destination device (selected by the user) by user selection.

In the flow, the following content identification mark described with reference to FIG.
(C) Content identification mark 313: Acquires information for displaying an identification mark indicating that “the user wants this content” when the transfer destination user is simultaneously viewing by playback streaming. Although not configured, the data transmitting apparatus receives information for displaying the identification mark from the data receiving apparatus as necessary, and displays the identification mark to be written based on the received information.

  In step S109, it is determined whether or not a transfer start request has been input by the user. If input, a file transfer is started in step S110. The data receiving apparatus receives the file in step S210.

  When the data transmission apparatus completes the file transfer in step S111, the data transmission apparatus notifies the completion by, for example, sound or message display, and the connection is disconnected by the user in step S112. The disconnect button 322 shown in FIG. 5 is operated, and the connection with the data receiving apparatus is completed.

  When the file transfer is completed in step S211, the data receiving apparatus notifies the completion by, for example, sound or message display, and the connection with the data transmitting apparatus is disconnected in step S212.

  File transfer may take a long time to complete depending on the capacity of data to be transferred and the transfer speed. Therefore, when the file transfer is completed, the digital camera sends a sound to notify the user of the transfer end, and the data transfer destination device notifies the user by making a sound or blinking the lamp. It is configured to do. Note that it is desirable to set the power supply to be automatically turned off when there is no data transfer or user operation for a certain period of time.

  In the above-described embodiment, the configuration example in which the file is transferred to the data receiving device and the data is stored in the HDD or the like has been described. For example, the data receiving device has a DVD or BD creation function, or the DVD or BD creation function. When a device having the above is connected, the transmission content can be recorded on a DVD or BD set in the data receiving device by an operation (command transmission) from the data transmitting device (digital camera) side. Good.

  Next, the apparatus configuration in the present embodiment will be described with reference to FIGS. FIG. 9 is a diagram illustrating a video camera as an example of a data transmitting device, and FIG. 10 is a diagram illustrating a configuration example of a data receiving apparatus. First, the configuration of the video camera 400 will be described with reference to FIG. The video camera 400 inputs audio from the audio input unit (microphone) 431 and inputs video from the video input unit (camera) 433 during the shooting process, and inputs the input data to the audio encoder 414 and the video encoder of the control unit 410. In 419, an encoding process is performed, and recording is performed on a recording medium 436 such as a DV tape, a hard disk, or a DVD via the recording / reproducing unit 423.

  Further, when reproducing data recorded on the recording medium 436, the recording / reproducing unit 423 acquires audio and video encoded data from the recording medium 436, and executes decoding processing in the audio decoder 415 and the video decoder 420, respectively. The audio data is output via the audio output processing unit 412 via the audio output unit 412 such as a speaker, and the video data is output via the video output processing unit 417 via the video output unit 434 such as an LCD. The

  In these processes, the user input via the input button 435 is detected by the user input unit 422 of the control unit 410, and under the control of the control unit 410 according to the request type of the shadow start and the reproduction start as the user input. Executed. The above process is the same as that of an existing video camera.

  A data transmission process that is one of the features of the present invention will be described. For example, when transmitting shooting data, the recording / playback unit 423 acquires the shooting data file stored in the recording medium 436 under the control of the control unit 410, and the communication control unit (packet) under the control of the file transfer control unit 445. (Processing unit) 421 generates a packet including the selected file, and performs transmission processing of the selected file via the network I / F 437 by file transfer.

Prior to this transmission process, the process described with reference to FIG. 8 is executed. Based on the information received from the transmission destination device, the information display unit 425 first displays FIG. The UI information 300 described with reference is displayed. That is, as the data transfer processing information 301,
(A) Total number of transfer data files (b) Total data capacity of transfer data and free capacity of storage means on the data receiving device side,
(C) Transfer data expected processing time
(A) Content identification mark 311: Mark indicating content stored (duplicated) in the transfer destination device (b) Content identification mark 312: Content to be transferred (selected by the user) to the transfer destination device c) Content identification mark 313: A mark indicating that the transfer destination user has notified "I want this content" while simultaneously viewing by playback streaming. These identification marks are displayed.

  The free data capacity acquisition unit 441 shown in FIG. 9 uses the free capacity of the storage means on the data receiving apparatus side received by the data transmitting apparatus (camera) from the data receiving apparatus in the processing of steps S102 and S103 in the flow shown in FIG. Processing to acquire and record information. That is, the free capacity information of the data receiving device side storage means is acquired by inquiring of the free space of the data receiving device side storage means to the data receiving device.

  The duplicate list creating / holding unit 442 is stored in the content list received from the data receiving apparatus by the data transmitting apparatus (camera) in the processing of steps S104 and S105 in the flow shown in FIG. 8, that is, stored in the storage means on the data receiving apparatus side. A duplicate content list is created and held based on collation between the content list and the content stored in the storage unit of the own device (camera). This process is the process described above with reference to FIGS.

  That is, as described above with reference to FIG. 6, the duplicate list creation / holding unit 442 generates a content list of content stored in the recording medium 436 and transmits the content list to the data reception device. Duplicate content is verified by receiving a content list to which information that makes it possible to identify the content held by the data reception device is received. Alternatively, as described with reference to FIG. 7, the content list creation request is transmitted to the data receiving device, the content list corresponding to the content held by the data receiving device is received, and stored in the received list and the recording medium 436. Duplicate content is verified by collating with content.

  The average transfer rate holding unit 443 and the expected transfer time calculation unit 444 execute the processing of steps S106 and S107 in the flow shown in FIG. 8 to calculate and record the time required for file transfer. The requested content information acquisition unit 447 acquires requested content information from the data receiving device. The information display unit 425 uses FIG. 5 by using the acquisition or holding information of the free data capacity acquisition unit 441, the duplicate list creation / holding unit 442, the average transfer rate holding unit 443, and the requested content information acquisition unit 447. The UI information 300 described above is displayed.

  After that, when the user operates the transfer start button 321 displayed in the UI information 300 shown in FIG. 5, the recording / playback unit 423 acquires the selected shooting data file from the recording medium 436, and the file transfer control unit 445 Under the control, the communication control unit (packet processing unit) 421 generates a packet including the selected file data and outputs it via the network I / F 437.

  As the destination information set for this transmission packet, as described in the above-described embodiment, the IP address of the router set as the relay device of the local network of the receiving device and the port forwarding setting for the receiving device are made. The information specifying the port number is applied. These pieces of information are stored in the file transfer control unit 445, and the communication control unit (packet processing unit) 421 acquires these pieces of information, generates a transmission packet, and outputs the packet via the network I / F 437.

  Next, a configuration example of the data receiving apparatus will be described with reference to FIG. The data receiving device 450 shown in FIG. 10 has functions as a communication unit and a recording unit for received data. The data receiving device 450 receives data by file transfer processing via the network I / F 485, analyzes the packet in the communication control unit 461, and stores the data in the recording medium 481 via the file transfer control unit 474 and the recording / playback unit 475.

  The free data capacity calculation unit 471 of the data receiving apparatus shown in FIG. 10 is used in the processing of steps S202 to S204 in the flow shown in FIG. 8, and calculates free capacity data of the recording medium 481. The content list creation unit 472 creates a list of content stored in the recording medium 481 based on the content list request from the data transmission device (camera) in the processing of steps S205 to S207 in the flow shown in FIG. This process is the process described above with reference to FIGS.

  As described with reference to FIG. 6, the content list creation unit 472 creates a content list in which information that makes it possible to identify the content held by the device itself is added to the content list received from the data transmission device, or As described with reference to FIG. 7, in response to a content list creation request received from the data transmission device, a content list corresponding to the content held by the own device is created.

  The transfer rate data processing unit 474 executes the processing of steps S208 to S209 in the flow shown in FIG. That is, it manages the execution of data reception and reception completion notification necessary for calculating the time required for file transfer.

  Data reception, recording instructions, and the like can be input by, for example, a remote controller operated by the user. The remote control receiving unit 482 receives the user's remote control operation information, and the reception signal of the remote control receiving unit is the user input unit 483. In the analysis, various processes are started and stopped.

[6. Streaming playback control based on confirmation of content held by data receiver]
Next, a description will be given of an embodiment in which, in streaming playback processing, the data transmission device checks the content held by the data reception device and controls the streaming processing.

  Specifically, when the content to be streamed is stored in the storage unit on the data receiving device side, the reproduction from the storage unit on the data receiving device side is executed without performing the transmission process of the content. When the content to be streamed is not stored in the storage unit on the data receiving device side, the content is transmitted and streaming playback is executed.

  Hereinafter, in the embodiment to be described, a description will be given of a processing example in which bidirectional communication is also performed in which data is transmitted from a data receiving apparatus, which is a counterpart to which shooting data is transmitted from the video camera, to the video camera. A bidirectional communication configuration will be described with reference to FIG.

  By continuously transferring IP packets from the video camera A 122 to the data receiving device B 143 and performing real-time streaming, the data transmitted from the video camera A 122 is relayed live to the output means 147 such as the TV of the remote home B 140. Can be displayed directly on the screen. In addition, by applying the packet communication route described with reference to FIG. 3 (B2), data transmission from the data reception device B 143 to the video camera A 122 is also possible.

  The user A who is actually shooting or playing back using the video camera A122 sees the reaction of the user B who is viewing the video / sound on the output means 147 under the control of the data receiving device B143, and listens to the comment. You may want to On the other hand, the user B who is viewing the video / audio may want to make a request for the video he / she wants the user A to view or to talk about the detailed situation around him.

  In order to enable such communication, the present invention also enables reverse real-time streaming. That is, the configuration enables bidirectional streaming communication. The address setting of the communication packet is performed by the processing described with reference to FIGS. 3 (B1) and 3 (B2).

  In the configuration shown in FIG. 11, the data receiving device B 143 on the home B 140 side receives the video / audio received from the video camera A 122 of the home A 120 while streaming, and simultaneously, via the camera 145 and the microphone 146 attached to the data receiving device B 143. At least one of video and audio input data on the home B 140 side input to the video camera A 122 by the packet communication described with reference to the route opposite to the data reception route, that is, with reference to FIG. Real-time streaming output.

  At this time, not only the video / audio from the video camera A122 but also the input video of the data receiving device B143 are simultaneously displayed on the output means 147 connected to the data receiving device B143. For example, as shown in FIG. 12, the self-photographed data 501 captured by the camera 145 attached to the data receiving device 143 is displayed simultaneously with the display of the received image from the video camera A122.

  In addition, for example, when the user B on the home B side does not want to temporarily send the video or audio included in the self-photographed data 501 to the home A side (the video camera A 122), the data receiving apparatus B 143 It is desirable to provide a GUI that can turn ON / OFF audio / video to the video camera A122. For example, a GUI such as the self-photographing data transmission control GUI 502 shown in FIG. 12 is set.

  On the other hand, the video camera A 122 performs streaming transmission of video / audio to the data receiving device B 143, and at the same time, the video and audio captured from the data receiving device B 143 by the camera 145 and the microphone 146 attached to the data receiving device B 143 in real time. It can be received as streaming, and the received data can be displayed and reproduced.

  An example of a reception data reproduction processing configuration in the video camera A 122 will be described with reference to FIG. As a display method of the video received from the data receiver B 143, as shown in FIG. 13, for example, a small screen can be displayed and displayed at the lower right corner of the liquid crystal screen of the video camera A122. As shown in FIG. 13, on the liquid crystal screen of the video camera A 122, shooting data 511 that is a video being shot is displayed, and a screen area for displaying a video received from the data receiving device B 143 is set, and streaming reception is performed. Image data 512 is displayed. For displaying the streaming received image data 512, a different liquid crystal screen different from the shooting data display screen may be used.

  As a method for reproducing audio from the data receiver B 143, for example, the audio output terminal of the video camera A 122 may output, and the user A may listen to the audio, that is, the streaming reception audio data 513 with headphones or the like. When the video camera A 122 is in the “shooting mode”, the surrounding sounds can be heard, so only the other party's voice needs to be output from the headphones. However, in the “playback mode”, both the voice being played and the other party's voice are simultaneously output. Since it must be played back, control is performed such that the sound is mixed, or one is separated from the speaker of the video camera A 122 and the other is separated from the headphones. These enable two-way communication.

  In this embodiment, for example, in such a configuration for performing bidirectional communication, the data transmission device confirms the content held by the data reception device, and the content to be streamed is stored in the storage means on the data reception device side. In the case where the content to be streamed is not stored in the storage unit on the data receiving device side, the playback from the storage unit on the data receiving device side is executed without transmitting the content. Transmits the content and performs streaming reproduction. The retained content confirmation process is executed by any of the processes described above with reference to FIGS.

  When the retained content is confirmed by any of the processes described above with reference to FIGS. 6 and 7, the content of the content set with the identification mark of the retained content is displayed on the display unit of the video camera on the data transmission side. A thumbnail list is displayed. FIG. 14 shows a display example of user interface (UI) information. The UI information 550 includes a content thumbnail 551 generated from a representative image corresponding to a file stored in the storage unit of the data transmission device (camera) and a received image that is a video received from a communication partner through two-way communication. Data 552, a transfer start button 553 operated by the user when starting data transfer from the data transmitting device, a disconnect button 554 operated by the user when stopping data transfer from the data transmitting device, and a display A page feed button for page-turning the displayed thumbnail is displayed.

  Further, a content identification mark (duplicate mark) 555 that is a mark indicating the content stored (duplicated) in the transfer destination device is displayed. The content identification mark (duplicate mark) 555 is a mark indicating the content stored (duplicated) in the transfer destination device. Any one of the processes described with reference to FIG. 6 and FIG. 7 is performed between the data transmission device and the data reception device, information about the content held by the data reception device is acquired, and the content identification mark is based on the acquired information (Duplicate mark) 555 is displayed.

  Next, the processing sequence of the data transmitting apparatus (camera) and the processing sequence of the data receiving apparatus in this embodiment will be described with reference to the flowcharts shown in FIGS.

  First, the processing sequence of the data transmission device (camera) will be described with reference to the flowchart shown in FIG. First, in step S301, connection is made with a data receiving device. That is, the data transmission device (digital camera A) and the data reception device (data reception device B) set the communication path by the process described above with reference to FIG. Next, in step S302, the data transmitting apparatus transmits a content list request for acquiring content information stored in the storage unit on the data receiving apparatus side to the data receiving apparatus, and in step S303, the data receiving apparatus. Receive content list from.

  This process corresponds to the process described above with reference to FIGS. 6 and 7. Based on the content duplication list obtained by this process, the UI information described with reference to FIG. Display processing of the content identification mark (duplicate mark) 555 is performed.

  Next, in step S305, the user selects content to be played and transmitted using the UI information described with reference to FIG. In step S306, it is determined whether or not the selected content is content in which a content identification mark (duplicate mark) 555 is set. This determination is performed by a control unit that performs reproduction control and transmission control.

  If the content has a duplicate mark set, the process proceeds to step S307, and “duplicate reproduction mode” is transmitted as reproduction mode setting information to the data receiving apparatus. This “overlapping playback mode” is a mode in which playback is performed from the storage unit in the receiving device without streaming the content. Since the content set with the duplicate mark is stored in the storage unit on the receiving device side, the content is reproduced from the storage unit in the receiving device without transmitting the content from the data transmitting device (camera).

  In step S308, a reproduction start command is output to the data receiving device. At the same time, playback of the selected content is also started in the own device (camera). By this processing, the same content is reproduced in parallel by the data transmitting device and the data receiving device.

  If it is determined in step S309 that the content reproduction has been stopped or has reached the end, the process proceeds to step S310, where a reproduction stop command is transmitted to the data reception device. In step S315, an end determination is made. In the case of performing, etc., the process proceeds to step S304, and further content selection is performed. When the communication is to be terminated, the process proceeds to step S316, where the connection is disconnected and the communication is terminated.

  On the other hand, if it is determined in step S306 that the selected content is content for which no duplicate mark is set, the process advances to step S311 to transmit “content transmission / playback mode” as playback mode setting information to the data receiving apparatus. This “content transmission / playback mode” is a mode in which the content is streamed and the streaming playback is executed in the receiving apparatus. Since the content for which the duplicate mark is not set is not stored in the storage unit on the reception device side, the content transmission is performed from the data transmission device (camera) and the streaming reproduction is executed in the reception device.

  In step S312, streaming of content data to the data receiving apparatus is started. At the same time, playback of the selected content is also started in the own device (camera). By this processing, the same content is reproduced in parallel by the data transmitting device and the data receiving device.

  If it is determined in step S313 that the content reproduction has been stopped or has reached the end, the process proceeds to step S314, where the streaming of the content data is stopped. In step S315, the end determination is made. For example, the process proceeds to step S304 to further select content. When the communication is to be terminated, the process proceeds to step S316, where the connection is disconnected and the communication is terminated.

  Next, processing on the data receiving device side will be described with reference to a flowchart shown in FIG. First, in step S401, the data transmission device is connected. That is, the data transmission device (digital camera A) and the data reception device (data reception device B) set the communication path by the process described above with reference to FIG. Next, in step S402, a content list request is received from the data transmission device.

  That is, a content list request as content information stored in the storage means on the data receiving device side is received, and in step S403, a content list is created and transmitted to the data transmitting device. This process corresponds to the process described above with reference to FIGS. 6 and 7, and the data transmission apparatus performs the UI information described with reference to FIG. 14 based on the content duplication list obtained by this process. The content identification mark (duplicate mark) 555 is displayed.

Next, in step S405, the playback mode setting information is received from the data transmission device from the data transmission device.
As described above, the playback mode is
Duplicate playback mode: mode in which playback is performed from the storage unit in the receiving device without streaming transmission of content Content transmission playback mode: mode in which streaming transmission of content is performed and streaming playback is performed in the receiving device,
There are these two modes.

  When playing back and transmitting content in which the content identification mark (duplicate mark) 555 is displayed in the UI information described with reference to FIG. 14, the playback mode is set to the duplicate playback mode, and content without a duplicate mark is played back and transmitted. In this case, the content transmission / playback mode is set.

  If the reproduction mode information received from the data transmission device is [duplicate reproduction mode] in step S406, the process proceeds to step S407, where a reproduction command is received from the data transmission device, and in step S408, storage means on the reception device side. The content is acquired from and executed. Along with this processing, the selected content is also reproduced in the data transmission device (camera), and the same content is reproduced in parallel in the data transmission device and the data reception device.

  In step S409, it is determined whether or not a content reproduction stop command has been received. If the command is received, the process proceeds to step S410, where the content reproduction is terminated. In step S415, the communication termination is determined. In some cases, the process proceeds to step S405, and further, reproduction mode information corresponding to the next content is received. When the communication is to be terminated, the process proceeds to step S416, where the connection is disconnected and the communication is terminated.

  On the other hand, if the reproduction mode information received from the data transmission device is not [duplicate reproduction mode] in step S406, that is, if it is “content transmission reproduction mode”, the process proceeds to step S411, and content data from the data transmission device is transmitted. Streaming reception is started, and streaming playback processing is executed in step S412.

  When the stop of streaming is confirmed in step S413, the streaming reproduction of the content is terminated. In step S415, it is determined whether the communication is terminated. If not, for example, when the next content reproduction is performed, the process proceeds to step S405. Further, playback mode information corresponding to the next content is received. When the communication is to be terminated, the process proceeds to step S416, where the connection is disconnected and the communication is terminated.

  Next, the apparatus configuration in the present embodiment will be described with reference to FIGS. FIG. 17 shows a video camera as an example of a data transmission device, and FIG. 18 shows a configuration example of a data receiving apparatus.

  First, the configuration of the video camera 600 will be described with reference to FIG. The video camera 600 inputs audio from the audio input unit (microphone) 631 and inputs video from the video input unit (camera) 633 during shooting processing, and inputs the input data to the audio encoder 614 and the video encoder of the control unit 610. In 619, encoding processing is performed, and recording is performed on a recording medium 636 such as a DV tape, a hard disk, or a DVD via the recording / reproducing unit 623.

  In the reproduction process of the data recorded on the recording medium 636, the recording / reproducing unit 623 acquires audio and video encoded data from the recording medium 636, and executes the decoding process in the audio decoder 615 and the video decoder 620, respectively. The audio data is output via the audio output processing unit 612 via the audio output unit 632 such as a speaker, and the video data is output via the video output processing unit 617 via the video output unit 634 such as an LCD. The

  In these processes, the user input via the input button 635 is detected by the user input unit 622 of the control unit 610, and is controlled under the control of the control unit 610 according to the request type of shadow start and reproduction start as the user input. Executed. The above process is the same as that of an existing video camera.

  A data transmission process that is one of the features of the present invention will be described. For example, when transmitting shooting data, as described above with reference to the flowchart of FIG. 15, a content list of content stored in the storage unit of the data transmission destination device is acquired from the data transmission destination, and the duplicate content list is acquired. Create The duplicate list creation / holding unit 641 is a processing unit that executes this process, and stores the duplicate list in both devices based on the content list obtained from the data receiving device by the processing of steps S302 to S303 in the flow shown in FIG. A list of the content that has been generated. This process is the process described above with reference to FIGS. The display process of the UI information 550 described with reference to FIG. 14 is performed by applying the fire information.

The reproduction / stop command creation unit 542 generates information and commands to be applied in the processes of steps S306 to S310 and steps S311 to S314 in the flow shown in FIG. That is, as mode setting information of the playback mode,
Duplicate playback mode: mode in which playback is performed from the storage unit in the receiving device without streaming transmission of content Content transmission playback mode: mode in which streaming transmission of content is performed and streaming playback is performed in the receiving device,
Any one of these mode information is generated as reproduction mode information to be transmitted to the data receiving apparatus, and a command corresponding to each mode is generated.

  The control unit 610 displays recording data recorded on the recording medium 636 or image data acquired by an image acquisition unit such as a video input unit on a video output unit 634 serving as a display unit, and a data reception device via a network. The content transmission control process is executed. For content that is determined to be duplicate content in the duplicate content list creation / holding unit 641, processing for transmitting a content reproduction start command to the data receiving device is performed without performing content transmission.

  In addition, the control unit 610 performs reproduction on the digital camera A side, for example, in order to perform “simultaneous reproduction” with higher accuracy between the data transmission apparatus (camera) and the data reception apparatus when reproducing and streaming duplicate contents. A method may be employed in which the start is delayed by “RTT / 2” time. That is, after a command is transmitted on the data transmission device (camera) side by half the RTT (Round-Trip Time), which is a round trip time required for communication between the data transmission device (camera) and the data reception device, until the start of reproduction. By delaying it, it is possible to simulate “receiving commands simultaneously with each other”.

  The communication control unit (packet processing unit) 621 receives the audio encoded data generated by the audio encoder 614 and the video encoded data generated by the video encoder 619, generates a packet storing these encoded data, and generates the network I. / F637 to output. Furthermore, the playback mode information generated by the playback / stop command creation unit 542 and each command are also transmitted.

  The destination information set for the transmission packet includes the router IP address set as the relay device of the local network of the receiving device and the port forwarding setting for the receiving device as described in the above-described embodiment. The information specifying the port number that is made is applied. These pieces of information are stored in the memory 624, and the communication control unit (packet processing unit) 621 acquires these pieces of information from the memory 624, generates a transmission packet, and outputs it via the network I / F 637.

  Note that, for example, reproduction data can be transmitted together with reproduction processing of data recorded on the recording medium 636. In this case, the recording / playback unit 523 obtains audio and video encoded data from the recording medium 536, performs decoding processing in the audio decoder 615 and the video decoder 620, respectively, and the recording / playback unit 623 obtains from the recording medium 636. The encoded audio and video encoded data is input to the communication control unit (packet processing unit) 621, and the communication control unit (packet processing unit) 621 generates a packet storing these input data and transmits the packet via the network I / F 637. Output. The destination setting is set based on the address and port number acquired from the memory 524 as in the above-described processing.

  In addition, when executing reproduction processing for data received via the network I / F 637, the communication control unit (packet processing unit) 621 performs analysis of the packet received via the network I / F 637 and performs voice data processing. The video data is discriminated, the data is input to the audio decoder 615 and the video decoder 620, and the decoding process is executed. The audio data is output to the audio output unit 632 such as a speaker via the audio output processing unit 612. The video data is output via a video output processing unit 617 and a video output unit 634 such as an LCD.

  Note that, in this reproduction process, when reproduction of shooting data is executed together, it is necessary to execute reproduction of received data and reproduction of shooting data in parallel.

  As described above, the communication control unit (packet processing unit) 621 executes a process of generating a transmission packet storing data captured by the video camera and outputting the packet to the network. At this time, the data transmission destination is stored from the memory 624. Obtains the host name of the device and the port number set for port forwarding processing in the relay device of the connection network of the data transmission destination device, receives address information corresponding to the host name of the data transmission destination device from the DNS server, and receives it A process of generating a transmission packet including the address and the port number as destination information and outputting it to the network is executed.

  Also, the authentication processing unit 625 shown in the figure executes authentication processing with the data transmission destination device via the communication I / F 638. On the condition that the authentication processing unit 625 establishes authentication, the host name of the data transmission destination device and the set port number of the port forwarding process in the relay device of the connection network of the data transmission destination device are received from the data transmission destination device. And stored in the memory 624.

  Next, a configuration example of the data receiving apparatus will be described with reference to FIG. The data receiving apparatus 700 shown in FIG. 18 has functions as a communication unit and a reception data output unit. In addition to outputting data received via a network, the camera includes a camera and a microphone, and has a configuration capable of executing processing for outputting captured video and audio to the network.

  When the data reception device 700 executes reproduction processing for data received via the network I / F 736, the communication control unit (packet processing unit) 721 executes analysis of a packet received via the network I / F 736. The audio data and the video data are discriminated, the respective data are input to the audio decoder 714 and the video decoder 720, and the decoding process is executed. The audio data is transmitted to the speaker or the like via the audio output processing unit 712. The video data is output via the audio output unit 732, and the video data is output via the video output processing unit 717 and the video output unit 734 such as an LCD.

  Note that the content list creation unit 741 inspects the content stored in the recording medium 743 as the storage unit on the data receiving device side via the recording / playback unit 744 in response to the reception of the content list request from the data transmitting device. Then, a content list to be transmitted to the data transmission device is created. This process corresponds to the process described above with reference to FIGS. 6 and 7, and the data transmission apparatus performs the UI information described with reference to FIG. 14 based on the content duplication list obtained by this process. The content identification mark (duplicate mark) 555 is displayed.

The reproduction / stop command analysis unit 742 reproduces the reproduction mode setting information, which is the resin name from the data transmission device, that is,
Duplicate playback mode: mode in which playback is performed from the storage unit in the receiving device without streaming transmission of content Content transmission playback mode: mode in which streaming transmission of content is performed and streaming playback is performed in the receiving device,
Analysis of the reproduction mode information of these two modes and command analysis corresponding to the reproduction mode are executed.

  In the case of [duplicate playback mode], in response to a playback command received from the data transmission device, the recording / playback unit 744 obtains content from the recording medium 743 which is storage means on the receiving device side and executes playback. In the case of the “content transmission / reproduction mode”, streaming reception of content data from the step, data transmission device is started, and streaming reproduction processing is executed.

  18 includes a video input unit 733 such as a camera and an audio input unit 731 such as a microphone, and executes processing for outputting the captured video and audio over the network. When this processing is performed, the data output from the network is also output to the video output unit 734 of the own apparatus. For example, along with the reproduction of received data, the output of data acquired by the own device is also executed.

  The data receiving apparatus 700 inputs audio from the audio input unit (microphone) 731 and inputs video from the video input unit (camera) 733, and encodes each input data in the audio encoder 714 and video encoder 719 of the control unit 710. The process is executed, and the encoded data is input to the communication control unit (packet processing unit) 721. The communication control unit (packet processing unit) 721 inputs the audio encoded data generated by the audio encoder 714 and the video encoded data generated by the video encoder 719, generates a packet storing these encoded data, and generates a network I / F736 to output.

  As the destination information set for this transmission packet, the IP address of the router set as the relay device of the local network to which the video camera is connected and the port number for which the port forwarding setting for the receiving device has been specified Information is applicable. These pieces of information are stored in the memory 724, and the communication control unit (packet processing unit) 721 acquires these pieces of information from the memory 724, generates a transmission packet, and outputs the transmission packet via the network I / F 736.

  When the received data is reproduced, when the image captured by the video input unit 733 of the own apparatus is output, it is executed as an output process so that each data can be distinguished. For example, the received video data is output to the main, and the image captured by the video input unit 733 of the own apparatus is output to a part of the screen as a sub screen. These output control processes are executed as processes of the video composition unit 718 shown in FIG.

  Data reception, playback instructions, and the like can be input by, for example, a remote controller. The remote control receiving unit 735 receives user remote control operation information, and the received signal of the remote control receiving unit is analyzed by the user input unit 722. For example, when the user input is a display mode change process, a user request is input to the controller display unit 723, and the video composition unit 718 is controlled to change the display mode.

  Further, the user can set the bit rate of received data, and execute / stop transmission of photographing data of the own apparatus. These settings can also be processed by the remote control. When the user input received by the remote control receiving unit 735 is analyzed by the user input unit and the request is for data transmission / reception processing, the request information is transmitted to the communication control unit (packet processing unit). To 721.

  For example, in the case of a user request such as stop or start of data transmission, stop / start processing of transmission of captured data of the own apparatus is performed according to the request. Further, when the user request is a request for changing the bit rate for the received data, a process of generating and transmitting a message packet storing the requested bit rate is executed.

  The communication control unit 721 executes and stops transmission of a packet storing data captured by the video input unit (camera) 733 based on input information input via the user input unit 722. Further, the data synthesis unit 718 displays and outputs the bit rate information of the data received in the communication control unit, and the communication control unit 721 displays the network based on the bit rate setting information input via the user input unit 722. A process of outputting a bit rate setting request to the transmission source of the data received via the network is executed.

  Also, the authentication processing unit 725 shown in the figure executes authentication processing with the data transmission source device via the communication I / F 737. For example, reception of streaming data from the data transmission source device is started on the condition that the authentication processing unit 725 establishes authentication.

  Even when fast-forwarding, rewinding, time-specified playback, etc. are performed on the data transmission device (camera) side, only commands indicating fast-forwarding, rewinding, time-specified playback, etc. are also transmitted in the case of duplicate content. With this configuration, it is possible to prevent transmission of duplicate content. However, if it is not a duplicate content, it is necessary to re-encode the data after fast-forwarding or the like. Furthermore, although not shown in the block diagrams of FIGS. 17 and 18, both the data transmission device (camera) and the data reception device may store the bidirectional communication streaming data as a “call record” in a storage medium.

  The present invention has been described in detail above with reference to specific embodiments. However, it is obvious that those skilled in the art can make modifications and substitutions of the embodiments without departing from the gist of the present invention. In other words, the present invention has been disclosed in the form of exemplification, and should not be interpreted in a limited manner. In order to determine the gist of the present invention, the claims should be taken into consideration.

  The series of processing described in the specification can be executed by hardware, software, or a combined configuration of both. When executing processing by software, the program recording the processing sequence is installed in a memory in a computer incorporated in dedicated hardware and executed, or the program is executed on a general-purpose computer capable of executing various processing. It can be installed and run. For example, the program can be recorded in advance on a recording medium. In addition to being installed on a computer from a recording medium, the program can be received via a network such as a LAN (Local Area Network) or the Internet, and installed on a recording medium such as a built-in hard disk.

  Note that the various processes described in the specification are not only executed in time series according to the description, but may be executed in parallel or individually according to the processing capability of the apparatus that executes the processes or as necessary. Further, in this specification, the system is a logical set configuration of a plurality of devices, and the devices of each configuration are not limited to being in the same casing.

  As described above, according to the configuration of the embodiment of the present invention, for example, a data transmission device that is an imaging device such as a video camera or a still camera and is capable of data communication can receive remote data via a network. In the configuration in which data is transmitted to the device and recorded in the storage means, or in the configuration in which streaming reproduction is performed, the verification processing of the content held redundantly by the data transmission device and the data reception device is executed. An identification mark indicating duplicate content is displayed on the display unit on the transmission device side. With this configuration, transmission of duplicate content can be prevented. Also, in streaming playback, if the content is duplicated, the playback command for starting playback of the recorded content on the receiving device side is transmitted without transmitting the content. With this configuration, parallel reproduction in which the content reproduction timing is synchronized between the data transmitting apparatus and the receiving apparatus is realized.

It is a figure which shows the system configuration example which concerns on one Example of this invention. It is a figure which shows the system structural example which replaced the home A120 shown in FIG. 1 with the public wireless LAN (hotspot) 126. It is a figure explaining the transmission / reception sequence of the IP packet from a video camera to a receiver. It is a figure explaining the detail of the process in which a video camera knows the IP address of a router. It is a figure which shows the example of the information displayed on the display part of a video camera. It is a figure explaining the investigation process of a duplicate content, and the production | generation process example of a duplicate content list. It is a figure explaining the investigation process of a duplicate content, and the production | generation process example of a duplicate content list. It is a figure which shows the flowchart explaining the flow of a process of one Example of the communication process which concerns on this invention. It is a figure explaining the structural example of the video camera as an example of a data transmission apparatus. It is a figure explaining the structural example of the data receiver as an example of a data receiver. It is a figure explaining a bidirectional | two-way communication structure. It is a figure explaining the example which displays simultaneously the input image of not only the image | video and audio | voice from a video camera but a data receiver. It is a figure explaining the example of a reproduction | regeneration processing structure of the received data in a video camera. It is a figure which shows the example of the information displayed on the display part of a video camera. It is a figure which shows the flowchart explaining the flow of a process of one Example of the communication process which concerns on this invention. It is a figure which shows the flowchart explaining the flow of a process of one Example of the communication process which concerns on this invention. It is a figure explaining the structural example of the video camera as an example of a data transmission apparatus. It is a figure explaining the structural example of the data receiver as an example of a data receiver.

Explanation of symbols

120 Home A
121 IP network A
122 Video camera A
123 Router A
127 AP (access point)
130 Internet 140 Home B
141 IP network B
142 Router B
143 Data receiver B
144 Storage unit 145 Camera 146 Microphone 147 Output unit 221 to 223 Packet 231 to 233 Packet 251 DNS server 252 Host name IP address correspondence table 300 UI information 301 Data transfer processing information 302 Content thumbnail 311 to 313 Content identification mark 321 Transfer start button 322 Disconnect button 400 Video camera 410 Control unit 411 Audio input processing unit 412 Audio output processing unit 414 Audio encoder 415 Audio decoder 416 Video input processing unit 417 Video output processing unit 419 Video encoder 420 Video decoder 421 Communication control unit (packet processing unit)
422 User input unit 423 Recording / playback unit 431 Audio input unit 432 Audio output unit 433 Video input unit 434 Video output unit 435 Input button 436 Recording medium 437 Network I / F
441 Free data capacity acquisition unit 442 Duplicate list creation / holding unit 443 Average transfer rate acquisition unit 444 Expected time calculation unit 445 File transfer control unit 447 Requested content information acquisition unit 450 Data reception device 461 Communication control unit 471 Free data capacity calculation unit 472 Content list creation unit 473 Transfer speed data processing unit 474 File transfer control unit 475 Recording / playback unit 481 Recording medium 482 Remote control reception unit 483 User input unit 550 UI information 551 Content thumbnail 552 Received image data 553 Transfer start button 554 Disconnect button 555 Content Identification mark (duplicate mark)
600 video camera 610 control unit 611 audio input processing unit 612 audio output processing unit 613 audio synthesis unit 614 audio encoder 615 audio decoder 616 video input processing unit 617 video output processing unit 618 video synthesis unit 619 video encoder 620 video decoder 621 communication control unit (Packet processing part)
622 User input unit 623 Recording / playback unit 624 Memory 625 Authentication processing unit 631 Audio input unit 632 Audio output unit 633 Video input unit 634 Video output unit 635 Input button 636 Recording medium 637 Network I / F
638 Communication I / F
641 Duplicate list creation / holding unit 642 Play / stop command creation unit 700 Data receiving device 710 Control unit 711 Audio input processing unit 712 Audio output processing unit 713 Audio encoder 714 Audio decoder 716 Video input processing unit 717 Video output processing unit 718 Video composition Section 719 Video encoder 720 Video decoder 721 Communication control section (packet processing section)
722 User input unit 723 Controller display unit 724 Memory 725 Authentication processing unit 731 Audio input unit 732 Audio output unit 733 Video input unit 734 Video output unit 735 Remote control reception unit 736 Network I / F
737 Communication I / F
741 Content list creation unit 742 Play / stop command analysis unit 743 Recording medium 744 Recording / playback unit

Claims (28)

An image acquisition unit for capturing image data;
A storage unit for recording an acquired image of the image acquisition unit;
A communication control unit for transmitting the recording data recorded in the storage unit or the image data acquired by the image acquisition unit to a data receiving device via a network;
Using a content list acquired from the data receiving device, a duplicate list creating unit for verifying duplicate content between the content held in the data receiving device and the content stored in the storage unit;
A display unit that displays display information in which a content identification mark that enables identification of the duplicate content is set on a selection screen of content to be transmitted to the data receiving device;
A communication processing apparatus comprising: The duplicate list creation unit
The content list of the content stored in the storage unit is generated and transmitted to the data receiving device, and the content list is duplicated by receiving the content list to which information that can identify the retained content of the data receiving device is added. The communication processing apparatus according to claim 1, wherein the communication processing apparatus is configured to verify content. The duplicate list creation unit
A content list creation request is transmitted to the data receiving device, a content list corresponding to content held by the data receiving device is received, and duplicate content is verified by comparing the received list with the content stored in the storage unit The communication processing device according to claim 1, wherein the communication processing device is configured. The communication processing device further includes:
A free data capacity acquisition unit for acquiring free capacity information of the data receiving device side storage means by inquiring of the free capacity of the data receiving device side storage means to the data receiving device;
The communication processing apparatus according to claim 1, wherein the display unit is configured to display display information including the free data capacity on a selection screen of content to be transmitted to the data receiving apparatus. The communication processing device further includes:
A transfer time calculation unit for executing a transfer time calculation process in data transfer to the data receiving device;
The communication processing apparatus according to claim 1, wherein the display unit is configured to display the transfer time information calculated by the transfer time calculation unit on a selection screen for content to be transmitted to the data receiving device. . The communication processing device further includes:
A request content information acquisition unit for acquiring request content information from the data receiving device;
2. The display unit according to claim 1, wherein an identification mark for identifying the requested content acquired by the requested content information acquisition unit is displayed on a selection screen for content to be transmitted to the data receiving device. The communication processing device described. The communication processing device further includes:
The communication processing apparatus according to claim 1, further comprising a file transfer control unit that performs file transfer of the recording data recorded in the storage unit to the data receiving apparatus. The communication processing device further includes:
The control unit displays the recording data recorded in the storage unit or the image data acquired by the image acquisition unit on the display unit, and executes a process of controlling content transmission to the data reception device via the network. ,
The content that is determined to be duplicate content by the duplicate content list creation unit is configured to execute processing for transmitting a content reproduction start command to the data receiving device without performing content transmission. The communication processing apparatus according to claim 1. The controller is
9. The communication processing apparatus according to claim 8, wherein the communication processing apparatus is configured to start content reproduction in the own apparatus with a delay from a transmission time of a reproduction start command to the data receiving apparatus. A communication processing device that receives data from a data transmission device,
In response to a content list request from the data transmission device, a content list creation unit that generates and outputs a content list of stored content in the storage unit of the own device;
A communication control unit that transmits the content list created by the content list creation unit and receives data from the data transmission device;
A communication processing apparatus comprising: The content list creation unit
11. The communication processing apparatus according to claim 10, wherein the communication processing apparatus is configured to create a content list in which information that enables identification of the content held by the self apparatus is added to the content list received from the data transmission apparatus. The content list creation unit
11. The communication processing apparatus according to claim 10, wherein the communication processing apparatus is configured to create a content list corresponding to the content held by the self apparatus in response to a content list creation request received from the data transmitting apparatus. The communication processing device further includes:
If the playback mode information received from the data transmission device is the overlap playback mode, execute the playback processing of the content held by the device,
The communication processing apparatus according to claim 10, further comprising: a reproduction control unit that executes a reproduction process of the content received from the data transmission apparatus when the received reproduction mode information is not a duplicate reproduction mode. An information processing method executed in an imaging device,
A communication control step in which the communication control unit transmits the recording data recorded in the storage unit or the image data acquired by the image acquisition unit to the data receiving device via a network;
A duplicate list creating step for validating duplicate content between the content held in the data receiving device and the stored content in the storage unit using a content list acquired from the data receiving device;
A display step for displaying display information in which a content identification mark enabling identification of the duplicate content is displayed on a content selection screen to be transmitted to the data receiving device;
An information processing method characterized by comprising: The duplicate list creation step includes:
The content list of the content stored in the storage unit is generated and transmitted to the data receiving device, and the content list is duplicated by receiving the content list to which information that can identify the retained content of the data receiving device is added. The information processing method according to claim 14, wherein the information is verified. The duplicate list creation step includes:
A content list creation request is transmitted to the data receiving device, a content list corresponding to content held by the data receiving device is received, and duplicate content is verified by comparing the received list with the content stored in the storage unit The information processing method according to claim 14, wherein the information processing method is a step. The information processing method further includes:
The free data capacity acquisition unit has a free data capacity acquisition step of acquiring free capacity information of the data reception device side storage means by inquiring of the free capacity of the data reception device side storage means to the data reception device,
The display step includes
15. The information processing method according to claim 14, wherein the display information including the free data capacity is displayed on a selection screen for content to be transmitted to the data receiving device. The information processing method further includes:
The transfer time calculating unit includes a transfer time calculating step of executing a transfer time calculating process in data transfer to the data receiving device;
15. The information processing method according to claim 14, wherein the displaying step is a step of displaying the transfer time information calculated by the transfer time calculating unit on a selection screen for content to be transmitted to the data receiving device. . The information processing method further includes:
The requested content information acquisition unit has a requested content information acquisition step for acquiring requested content information from the data receiving device,
15. The display step according to claim 14, wherein an identification mark for identifying the requested content acquired by the requested content information acquisition unit is displayed on a selection screen for content to be transmitted to the data receiving device. The information processing method described. The information processing method further includes:
15. The information processing method according to claim 14, further comprising a file transfer control step in which the file transfer control unit performs file transfer of the recording data recorded in the storage unit to the data receiving device. The information processing method further includes:
Control that the control unit displays the recording data recorded in the storage unit or the image data acquired by the image acquisition unit on the display unit, and executes control processing of content transmission to the data reception device via the network Has steps,
The control step includes
15. The content that is determined to be duplicate content in the duplicate content list creation unit is configured to execute a process of transmitting a content reproduction start command to the data receiving device without performing content transmission. Information processing method described in 1. The control step includes
The information processing method according to claim 21, wherein the content reproduction in the own device is started with a delay from the transmission time of the reproduction start command to the data receiving device. An information processing method executed in a communication processing device that receives data from a data transmission device,
A content list creation step for generating and outputting a content list of content stored in the storage unit of the device in response to a content list request from the data transmission device;
A communication control step in which a communication control unit performs transmission of the content list created by the content list creation unit and data reception from the data transmission device; and
An information processing method characterized by comprising: The content list creation step includes:
24. The information processing method according to claim 23, wherein the information processing method is a step of creating a content list in which information indicating that the content held by the device itself can be identified is added to the content list received from the data transmission device. The content list creation step includes:
24. The information processing method according to claim 23, wherein the information processing method is a step of creating a content list corresponding to content held by the device in response to a content list creation request received from the data transmitting device. The communication processing method further includes:
When the playback control information received from the data transmission device is the overlap playback mode, the playback control unit executes the playback processing of the content held by the own device, and when the received playback mode information is not the overlap playback mode, 24. The information processing method according to claim 23, further comprising a reproduction control step of executing a reproduction process of content received from the data transmission device. A computer program for executing information processing in an imaging apparatus;
A communication control step for causing the communication control unit to transmit the recording data recorded in the storage unit or the image data acquired by the image acquisition unit to the data receiving device via a network;
A duplicate list creating step for causing a duplicate list creating unit to verify duplicate content between the content held in the data receiving device and the stored content in the storage unit using a content list acquired from the data receiving device;
A display step of displaying display information in which a content identification mark enabling identification of the duplicate content is displayed on a selection screen of content to be transmitted to the data receiving device on the display unit;
A computer program characterized by comprising: A computer program that executes information processing in a communication processing device that receives data from a data transmission device,
A content list creation step for causing the content list creation unit to generate and output a content list of the stored content in the storage unit of the own device in response to a content list request from the data transmission device;
A communication control step for causing the communication control unit to transmit the content list created by the content list creation unit and to receive data from the data transmission device;
A computer program characterized by comprising: