JP2007104568A - Communication terminal, data transmitting method, data receiving method, data transmitting program, data receiving program, and recording medium - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To effectively utilize video data which can be acquired in respective terminals. <P>SOLUTION: A first communication terminal 110 and a second communication terminal 120 are communication terminals within a communication network constituted of a plurality of communication terminals communicable with one another. The first communication terminal 110 comprises an input section 111, an acquisition section 112, a distribution section 113, a receiving section 114, and a transmitting section 115. The input section 111 accepts the imaging input of video data. When imaging is inputted by the input section 111, the acquisition section 112 acquires the video data together with the spot information of the first communication terminal 110 during the imaging. The distribution section 113 distributes the spot information acquired by the acquisition section 112 to the other communication terminal including the second communication terminal 120. The receiving section 114 receives a transmission request signal of video data from the other communication terminal as the result of distributing the spot information. The transmitting section 115 transmits the video data to the communication terminal that has transmitted the transmission request signal. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a communication terminal, a data transmission method, a data reception method, a data transmission program, a data reception program, and a recording medium used for data transmission / reception between users. However, use of the present invention is not limited to the communication terminal, data transmission method, data reception method, data transmission program, data reception program, and recording medium described above.

  2. Description of the Related Art Conventionally, with the development of network infrastructure and the spread of information communication terminals, data (information) is transferred between individual users via a network, and a community sharing the same information is formed.

  In such a community, for example, another mobile terminal receives a signal transmitted from a mobile terminal within the short-range wireless communication range by the short-range wireless communication unit, and exchanges necessary data. The received data is displayed on the display unit, and a transition to the next phase is prompted. Next, a connection is made to a server on the wide area network by the wide area wireless communication unit, confirming the identity of the other party and prompting the transition to the next phase. At this point, the personal details data is exchanged between the terminals (for example, see Patent Document 1 below).

JP 2001-333451 A

  However, according to the above-described prior art, there is a problem that it is impossible to know whether or not the information held by the communication partner is the information that the communication partner needs. In particular, when there are a large number of communicable parties, there is a problem that it is necessary to efficiently determine from which communication partner information is acquired.

  Moreover, even if the current position of the communication partner can be specified to some extent, there is a problem that information held by the communication partner is not necessarily related to the location. In particular, in communication using a movable communication terminal, there is a problem that an important factor for determining whether or not information is acquired is an important factor for determining where the information is related.

  Furthermore, there is a problem that information held by the communication partner cannot know the time (time) generated. In particular, for information that changes from moment to moment, the information that has passed since it was generated has no information value, and when the information was generated or not An example is the problem of being an important factor in determining

  In order to solve the above-described problems and achieve the object, the communication terminal according to the first aspect of the present invention is a communication terminal in a communication network composed of a plurality of communication terminals capable of communicating with each other, and is an imaging input of video data. Receiving means for acquiring the video data together with the location information of the communication terminal during imaging of the video data when the image is input by the input means, and the spot information acquired by the acquisition means Distribution means for distributing to the other communication terminal, reception means for receiving the transmission request signal of the video data from the other communication terminal as a result of distribution of the point information by the distribution means, and the reception Transmitting means for transmitting the video data to a communication terminal that has transmitted the transmission request signal when a transmission request signal is received by the means. And wherein the door.

  A communication terminal according to a second aspect of the present invention is a communication terminal in a communication network composed of a plurality of communication terminals that can communicate with each other, and includes an input unit that receives an image data input and an image that is captured by the input unit. If input, acquisition means for acquiring the video data together with information relating to the imaging time of the video data; and distribution means for distributing information relating to the imaging time acquired by the acquisition means to the other communication terminal; As a result of the distribution of the point information by the distribution means, a reception means for receiving the transmission request signal of the video data from the other communication terminal, and a transmission request signal received by the reception means, the transmission request Transmitting means for transmitting the video data to the communication terminal that transmitted the signal.

  According to a third aspect of the present invention, there is provided a communication terminal in a communication network composed of a plurality of communication terminals that can communicate with each other, an input unit that receives an image data input, and an image captured by the input unit. When input, acquisition means for acquiring the video data together with speed information of the communication terminal during imaging of the video data, and distribution for distributing the speed information acquired by the acquisition means to the other communication terminal If the transmission request signal of the video data is received from the other communication terminal, and the transmission request signal is received by the receiving means, as a result of the speed information being delivered by the delivery means, Transmitting means for transmitting the video data to a communication terminal that has transmitted the transmission request signal.

  According to a fourth aspect of the present invention, there is provided a communication terminal in a communication network composed of a plurality of communication terminals capable of communicating with each other, wherein the video data captured by a communication terminal other than the communication terminal is recorded. When the imaging point information is output by the first receiving unit that receives the imaging point information, the output unit that outputs the imaging point information received by the first receiving unit, and the output unit, the video data The transmission request signal is transmitted by the input means for receiving the transmission request of the video data, the transmission means for transmitting the transmission request signal of the video data when the input request is input by the input means, and the transmission means. As a result, a second receiving means for receiving the video data from the other communication terminal is provided.

  According to a fifth aspect of the present invention, there is provided a communication terminal in a communication network composed of a plurality of communication terminals capable of communicating with each other, the video data captured by a communication terminal other than the communication terminal. When the imaging time information is output by the first receiving means for receiving the imaging time information, the output means for outputting the imaging time information received by the first receiving means, and the output means, the video data The transmission request signal is transmitted by the input means for receiving the transmission request of the video data, the transmission means for transmitting the transmission request signal of the video data when the input request is input by the input means, and the transmission means. As a result, a second receiving means for receiving the video data from the other communication terminal is provided.

  The communication terminal according to the invention of claim 6 is a communication terminal in a communication network composed of a plurality of communication terminals capable of communicating with each other, and receives speed information of a communication terminal other than the communication terminal. 1 receiving means, output means for outputting speed information received by the first receiving means, and transmission of video data associated with the speed information when the output means outputs the speed information. A result of the transmission request signal being transmitted by the transmission means, a transmission means for transmitting the transmission request signal of the video data when there is an input of the transmission request by the input means; And second receiving means for receiving the video data from the other communication terminal.

  A data transmission method according to the invention of claim 7 is a data transmission method using a communication terminal in a communication network composed of a plurality of communication terminals capable of communicating with each other, and an input step for receiving an imaging input of video data; When the image is input by the input step, the video data is acquired together with the location information of the communication terminal during imaging of the video data, and the location information acquired by the acquisition step is A distribution step for distributing to a communication terminal; a reception step for receiving a transmission request signal for the video data from the other communication terminal as a result of distribution of the point information by the distribution step; and a transmission request signal for the reception step. A transmission step of transmitting the video data to a communication terminal that has transmitted the transmission request signal. To.

  A data receiving method according to an eighth aspect of the present invention is a data receiving method using a communication terminal in a communication network composed of a plurality of communication terminals capable of communicating with each other, by a communication terminal other than the communication terminal. A first receiving step for receiving imaging point information of the captured video data, an output step for outputting the imaging point information received by the first receiving step, and the imaging point information is output by the output step. When receiving the input of the transmission request of the video data, when the transmission request is input by the input step, the transmission step of transmitting the transmission request signal of the video data, and the transmission step And a second reception step of receiving the video data from the other communication terminal as a result of the transmission request signal being transmitted.

  According to a ninth aspect of the present invention, a data transmission program causes a computer to execute the data transmission method according to the seventh aspect.

  According to a tenth aspect of the present invention, a data reception program causes a computer to execute the data reception method according to the eighth aspect.

  According to an eleventh aspect of the present invention, a recording medium is readable by a computer that records the data transmission program according to the ninth aspect.

  A recording medium according to a twelfth aspect of the present invention is readable by a computer in which the data receiving program according to the tenth aspect is recorded.

  Exemplary embodiments of a communication terminal, a data transmission method, a data reception method, a data transmission program, a data reception program, and a recording medium according to the present invention are explained in detail below with reference to the accompanying drawings.

(Embodiment)
First, the functional configuration of the data transmission / reception system according to the embodiment will be described. FIG. 1 is a block diagram of a functional configuration of the data transmission / reception system according to the embodiment. 1, the data transmission / reception system 100 includes a first communication terminal 110 that transmits video data and a second communication terminal 120 that receives video data. The first communication terminal 110 and the second communication terminal 120 are communication terminals in a communication network including a plurality of communication terminals that can communicate with each other.

  The first communication terminal 110 includes an input unit 111, an acquisition unit 112, a distribution unit 113, a reception unit 114, and a transmission unit 115. The input unit 111 accepts an imaging input of video data. Here, the imaging input is an input of information instructing video shooting. Specifically, the input unit 111 receives, for example, an input from an operation button provided on the first communication terminal 110 or a voice input.

  When the image is input by the input unit 111, the acquisition unit 112 acquires video data together with point information (hereinafter referred to as imaging point information) of the first communication terminal 110 during the imaging of the video data. The imaging point information of the first communication terminal 110 is information for specifying the current position of the first communication terminal 110 at each time, for example, latitude and longitude information at each time of the first communication terminal 110. It is. The video data includes still images and moving images. For example, the acquisition unit 112 captures video data with a camera provided in the first communication terminal 110, and adds and stores imaging point information.

  The distribution unit 113 distributes the imaging point information acquired by the acquisition unit 112 to other communication terminals including the second communication terminal 120. Specifically, the distribution unit 113 transmits imaging point information using, for example, a broadcast address that transmits information to all communication terminals in the communication network. In addition, the distribution unit 113 transmits the imaging point information only to the communication terminals located within the communication area of the specific base station, or specifies the communication address of the second communication terminal 120 individually. The imaging point information may be distributed to only a limited number of communication terminals.

  The reception unit 114 receives a transmission request signal for video data from other communication terminals including the second communication terminal 120 as a result of the distribution of the imaging point information by the distribution unit 113. The transmission request signal received by the reception unit 114 may include information specifying the length of the video data and the further narrowed shooting point.

  When the transmission request signal is received by the reception unit 114, the transmission unit 115 transmits the video data to the communication terminal that has transmitted the transmission request signal. At this time, if the transmission request signal received by the reception unit 114 includes information specifying the length of the video data or the shooting location, the video data captured by the acquisition unit 112 is cut out and transmitted.

  For example, the transmission unit 115 specifies the communication address of the second communication terminal 120 from the transmission request signal received by the reception unit 114 and transmits the video data. Note that the video data may be transmitted as a single file of video data for a certain period of time, or may be streamed while maintaining a connection for a certain period. Further, depending on the format of the video data and additional information, a plug-in necessary for use at the transmission destination may be attached and transmitted.

  Next, a functional configuration of the second communication terminal 120 will be described. The second communication terminal 120 includes a first reception unit 121, an output unit 122, an input unit 123, a transmission unit 124, and a second reception unit 125. The first receiving unit 121 receives imaging point information of video data captured by a communication terminal other than the second communication terminal 120 (for example, the first communication terminal 110). The imaging point information is information for specifying the current position of another communication terminal at the time when the video data is captured, and is, for example, latitude / longitude information at each time.

  The output unit 122 outputs imaging point information received by the first receiving unit 121. The output unit 122 displays, for example, a screen where imaging point information is drawn on a map, or displays text-based imaging point information on a screen or outputs sound.

  The input unit 123 receives an input of a video data transmission request when the imaging unit information is output by the output unit 122. At this time, the length of the video data and the shooting point may be further specified. Further, it may be possible to specify a transmission method (batch transmission or streaming transmission) of video data.

  Specifically, the input unit 123 receives a transmission request for data input by the user, for example, based on the information output by the output unit 122. Specifically, the input unit 123 receives an input of a video data transmission request by using, for example, an operation button, a touch panel, a voice input device, or the like.

  The transmission unit 124 transmits a transmission request signal for video data when a transmission request is input by the input unit 123. For example, the transmission unit 124 specifies the communication address of the first communication terminal 110 from the transmission source address of the imaging point information received by the first reception unit 121, and transmits a transmission request signal.

  The second reception unit 125 receives video data from another communication terminal as a result of the transmission request signal being transmitted by the transmission unit 124.

  In the configuration described above, the acquisition unit 112 of the first communication terminal 110 acquires the imaging point information that is the point information of the first communication terminal 110 during imaging of the video data. , Information regarding the imaging time of video data (time when video data was captured) and speed information of the first communication terminal 110 during imaging of video data (for example, whether it is stopped or moving at a predetermined speed or more) Etc.) may be obtained.

  In this case, the distribution unit 113 transmits each piece of information acquired by the acquisition unit 112 (information regarding shooting time, speed information) to another communication device. In addition, the second communication terminal 120 receives each information by the first receiving unit 121 and outputs it by the output unit 122. In addition, each information may be acquired and distributed simultaneously as a plurality of types of information such as imaging point information and imaging time information.

  Next, a procedure of data transmission / reception processing by the data transmission / reception system 100 will be described. Hereinafter, the data transmission process of the first communication terminal 110 that performs data transmission and the data reception process of the second communication terminal 120 that performs data reception will be described separately. FIG. 2 is a flowchart showing a procedure of data transmission processing of the first communication terminal.

  In the flowchart of FIG. 2, the first communication terminal 110 first stands by until an input of image data is received by the input unit 111 (step S201: No loop). When an imaging input of video data is received (step S201: Yes), the acquisition unit 112 acquires video data and imaging point information (step S202).

  Next, the imaging unit information is distributed by the distribution unit 113 to other communication terminals that can communicate with each other (step S203). And it waits until it receives a transmission request signal from another communication terminal (for example, 2nd communication terminal 120) (step S204: No loop), and when a transmission request signal is received (step S204: Yes), step The video data acquired in S202 is transmitted (step S205), and the processing according to this flowchart ends. The video data may be transmitted as a batch of video data for a certain period of time, or may be streamed while maintaining a connection for a certain period of time.

  Next, processing performed by the second communication terminal 120 will be described. FIG. 3 is a flowchart showing a procedure of data reception processing of the second communication terminal. In the flowchart of FIG. 3, the second communication terminal 120 first receives imaging point information from another communication terminal (for example, the first communication terminal 110) that can communicate with each other by the first receiving unit 121. (Step S301: No loop).

  When the imaging point information is received (step S301: Yes), the output unit 122 outputs the imaging point information (step S302). Then, the input unit 123 determines whether a video data transmission request has been accepted (step S303). When the transmission request is accepted (step S303: Yes), the transmission unit 124 transmits a video data transmission request signal to another communication terminal that has transmitted the imaging point information (step S304).

  Then, the second reception unit 125 waits until video data is received from another communication terminal that has transmitted the transmission request signal (step S305: No loop), and receives video data (step S305: Yes). Then, the process according to this flowchart is terminated. On the other hand, when the transmission request is not accepted in step S303 (step S303: No), the process returns to step S301, and the reception of the imaging point information is continued.

  As described above, according to the data transmission / reception system 100 according to the embodiment, in the communication network composed of a plurality of communication terminals that can communicate with each other, the imaging point information of the video data acquired by the first communication terminal 110. Is transmitted to other communication terminals including the second communication terminal 120. Thereby, the second communication terminal 120 determines whether or not the video data acquired by the first communication terminal 110 is necessary with reference to the imaging point information, and requests transmission if necessary. be able to.

  Moreover, it is good also as determining whether video data is transmitted with the 1st communication terminal 110 based on the elapsed time from delivery of imaging location information, and the reception time of a transmission request signal. Thereby, it is possible to avoid distributing data whose information value is diminished over time to other communication terminals.

  In the above-described embodiment, the video data acquired by the first communication terminal 110 is transmitted directly to the second communication terminal 120. However, the video data acquired by the first communication terminal 110 is transmitted to the communication server. It is good also as transmitting to the 2nd communication terminal 120 via.

  Specifically, for example, the first communication terminal 110 transmits the acquired video data and imaging point information to the communication server. The communication server stores the transmitted video data and transmits imaging point information to a communication terminal other than the first communication terminal 110. The other communication terminal to which the imaging point information has been transmitted transmits a video data transmission request signal to the communication server, and the communication server transmits the video data to the communication terminal that has transmitted the transmission request signal.

  Thereby, for example, the communication volume and transmission / reception status of data can be centrally managed by the communication server. Moreover, since direct data transmission / reception is not performed, the communication addresses of the first communication terminal 110 and the second communication terminal 120 are not known to each other, and personal information can be protected.

  Next, an example of the data transmission / reception system 100 according to the above-described embodiment will be described. In the following embodiment, a case where the data transmission / reception system 100 is applied to a data transmission / reception system 400 using a navigation device mounted on a vehicle will be described.

  First, the system configuration of the data transmission / reception system 400 according to the embodiment will be described. FIG. 4 is an explanatory diagram of a system configuration of the data transmission / reception system according to the embodiment. In FIG. 4, vehicles 410 and 420 (420a to 420e) are traveling on roads L1 and L2.

  In addition, navigation devices 411 and 421 (421a to 421e) are mounted on the vehicles 410 and 420, respectively. The navigation devices 411 and 421 communicate with the roadside devices 430 (430a to 430c) installed on the sides of the roads on which the vehicles 410 and 420 travel, respectively, and transmit and receive data.

  The roadside machines 430a to 430c are each connected to a network, and the communication areas are areas A, B, and C indicated by dotted lines in FIG. The vehicles 410 and 420 that have entered the communication areas of the roadside devices 430a to 430c are connected to the network via the roadside devices 430a to 430c to transmit and receive data. In addition to the illustration, the roadside machine 430 is installed so as to cover a point where the vehicles 410 and 420 can enter, such as a road and a parking lot, as a communication area.

  For each of the vehicles 410 and 420, an ID for identifying the vehicle is uniquely assigned to each of the vehicles 410 and 420, for example, as an IP address. This ID is used as a communication address in the data transmission / reception system 400, and the navigation devices 411 and 421 can transmit information to specific vehicles 410 and 420 using the IDs of the vehicles 410 and 420. The IDs of the vehicles 410 and 420 are stored in the navigation devices 411 and 421, respectively.

  Further, the navigation devices 411 and 421 can transmit information using a “broadcast address” that is a common address of the vehicles 410 and 420 in the communication area of all the roadside devices 430. By using the broadcast address, information can be transmitted to unspecified vehicles 410 and 420 even when the IDs of the individual vehicles 410 and 420 are not known. Further, a broadcast address for each roadside machine 430 may be provided. For example, when information is distributed using the broadcast address for the roadside machine 430a, the information is distributed to the vehicles 410 and 420 in the area A.

  In FIG. 4, it is assumed that information is transmitted using broadcast addresses for all vehicles 410 and 420 within the communication area of the roadside machine 430. However, the present invention is not limited to this and includes vehicles outside the communication area. Information may be transmitted using the broadcast address. That is, not only between vehicles existing in the communication area of FIG. 4 but also other vehicles traveling on roads other than L1 and L2 outside the communication area of FIG. The information may be transmitted using a broadcast address including other vehicles traveling far behind the vehicles 410 and 420. Thereby, information can be transmitted to unspecified vehicles in a wide range.

  In addition, the information transmission area may be designated and transmitted. As described above, when a broadcast address is provided in the roadside machine 430, an area can be designated by designating the roadside machine 430. This designation is naturally possible from a vehicle traveling on another road, and when information is transmitted from the vehicle designated by, for example, the roadside machine 430c, the information is distributed to vehicles in the area C. Will be.

  In addition, each of the navigation devices 411 and 421 includes a camera for video shooting. The camera can capture still images and moving images. In addition, it is possible to capture still image data and video data captured using a digital camera or a mobile phone camera. Passengers of the vehicles 410 and 420 can transmit video data captured by the cameras of the navigation devices 411 and 412 or captured from other devices to the other vehicles 410 and 420 via the network.

  On the other hand, the passengers of the other vehicles 410 and 420 determine whether or not the video data to be transmitted is necessary, and then determine whether or not to receive the transmission. For example, if the vehicle 410, 420 near the current position of the vehicle, the vehicle 410, 420 at the point where the vehicle is going to travel, the video data transmitted from the vehicle, or the video data of the field of interest may be received. Is expensive.

  Hereinafter, the vehicle that provides (sends) video data will be described as a vehicle 410, and the vehicle that provides (receives) video data will be described as a vehicle 420. 410 and 420 may be the transmission side and the reception side.

(Hardware configuration of navigation devices 411 and 421)
Next, the hardware configuration of the navigation devices 411 and 421 will be described. FIG. 5 is a block diagram illustrating a hardware configuration of the navigation apparatus. In FIG. 5, a navigation device 411, 421 includes a CPU 501, a ROM 502, a RAM 503, a magnetic disk drive 504, a magnetic disk 505, an optical disk drive 506, an optical disk 507, an audio I / F (interface) 508, A microphone 509, a speaker 510, an input device 511, a video I / F 512, a display 513, a communication I / F 514, and a GPS receiver 515 are provided. In addition, the components 501 to 515 are connected by a bus 520, respectively.

  First, the CPU 501 governs overall control of the navigation devices 411 and 421. The ROM 502 records programs such as a boot program, a communication program, a database creation program, and a data analysis program. The RAM 503 is used as a work area for the CPU 501.

  The magnetic disk drive 504 controls the reading / writing of the data with respect to the magnetic disk 505 according to control of CPU501. The magnetic disk 505 records data written under the control of the magnetic disk drive 504. As the magnetic disk 505, for example, an HD (hard disk) or an FD (flexible disk) can be used.

  The optical disk drive 506 controls reading / writing of data with respect to the optical disk 507 according to the control of the CPU 501. The optical disk 507 is a detachable recording medium from which data is read according to the control of the optical disk drive 506. As the optical disc 507, a writable recording medium can be used. In addition to the optical disk 507, the removable recording medium may be an MO, a memory card, or the like.

  The audio I / F 508 is connected to a microphone 509 for audio input and a speaker 510 for audio output. The sound received by the microphone 509 is A / D converted in the sound I / F 508. In addition, sound is output from the speaker 510. Note that the sound input from the microphone 509 can be recorded as sound data on the magnetic disk 505 or the optical disk 507.

  Further, examples of the input device 511 include a remote controller, a keyboard, a mouse, a touch panel, and the like provided with a plurality of keys for inputting characters, numerical values, various instructions, and the like. Further, the input device 511 can be connected to another information processing terminal (hereinafter simply referred to as a device) such as a digital camera to input / output data.

  In addition, the input device 511 includes a camera that can capture still images and moving images (videos). Still images and moving images shot by the camera can be recorded on the magnetic disk 505 or the optical disk 507 as video data. It is also possible to connect other devices such as a handheld digital camera or mobile phone to the input device 511 and capture video data captured by each device.

  The video I / F 512 is connected to the display 513. Specifically, the video I / F 512 includes, for example, a graphic controller that controls the entire display 513, a buffer memory such as a VRAM (Video RAM) that temporarily records image information that can be displayed immediately, and a graphic controller. Based on the output image data, the display 513 is configured by a control IC or the like.

  The display 513 displays icons, cursors, menus, windows, or various data such as characters and images. As the display 513, for example, a CRT, a TFT liquid crystal display, a plasma display, or the like can be adopted.

  In addition, the communication I / F 514 is connected to a network via wireless and functions as an interface between the navigation devices 411 and 421 and the CPU 501. The communication I / F 514 is further connected to a communication network such as the Internet via wireless, and also functions as an interface between the communication network and the CPU 501.

  Communication networks include LANs, WANs, public line networks and mobile phone networks. Specifically, the communication I / F 514 includes, for example, an FM tuner, a VICS (Vehicle Information and Communication System) / beacon receiver, a radio navigation device, and other navigation devices. Get road traffic information such as regulations. VICS is a registered trademark.

  Further, the GPS receiver 515 acquires information indicating the current positions of the vehicles 410 and 420 (current positions of the navigation devices 411 and 421) using output values from GPS (Global Positioning System) and various sensors. The information indicating the current position is information for specifying one point on the map information such as latitude and longitude.

(Data transmission / reception processing of the data transmission / reception system 400)
Next, a procedure of data transmission / reception processing performed by the data transmission / reception system 400 will be described. Hereinafter, the processing performed by the navigation device 411 of the vehicle 410 that transmits data and the processing performed by the navigation device 421 of the vehicle 420 that receives data will be described separately.

  FIG. 6 is a flowchart illustrating a procedure of data transmission processing of the vehicle navigation apparatus that transmits data. In the flowchart of FIG. 6, the navigation apparatus 411 waits until a video data shooting start instruction is input via the input device 511 (step S <b> 601: No loop). When a shooting start instruction is input (step S601: Yes), the navigation device 411 captures a surrounding image with a camera provided in the own device (step S602).

  The navigation device 411 returns to step S602 and continues to shoot surroundings while the shooting end instruction is not input (step S603: No). At this time, if there are restrictions on hardware resources such as disk capacity, the images may be taken at regular intervals or at regular intervals. Also, audio information, text information, etc. (hereinafter referred to as additional information) for explaining the situation regarding video data may be added.

  Then, when a shooting end instruction is input (step S603: Yes), shooting is ended, detailed information is added, and video data is stored (step S604). Here, the detailed information added in step S604 is, for example, the current position of the navigation device 411 (that is, the shooting position of the video data) at the time of shooting the video data, the time (time) when the video data was shot, the video The presence / absence of a data category (for example, video relating to traffic jams, video relating to scenery, etc.), a title of video data, and additional information (such as voice information and text information for situational explanation).

  Further, speed information such as whether the vehicle 410 is stopped or is traveling at high speed may be added to the detailed information. In this case, for example, an image captured by the stopped vehicle 410 as a fixed point observation, an image of the vehicle 410 that travels at a high speed on a desired route, an image of the vehicle 410 that travels at a low speed due to traffic congestion, and the like can be selected. it can.

  Further, for example, when the user finds an object to be photographed around, even if a photographing start instruction is input after that, the vehicle 410 is moving and there is a possibility of missing the object to be photographed. In order to avoid this, the surrounding image may be buffered for a certain period of time at all times regardless of the shooting instruction. In this case, an input operation is used to cut out a video that captures what is to be photographed, and adds and stores the corresponding detailed information.

  Next, the navigation apparatus 411 determines whether or not a transmission request for the stored video data has been input via the input device 511 (step S605). When the transmission request is input (step S605: Yes), the video data transmission request notification is distributed to the navigation device 421 of the other vehicle 420 using the broadcast address (step S606). On the other hand, when the video data transmission request is not input (step S605: No), the process returns to step S601 and waits for an instruction to start video shooting.

  The video data transmission request notification distributed in step S606 includes detailed information about the video data desired to be transmitted. As described above, the detailed information includes the shooting point of the video data, the time (time) when the video data was shot, the category of the video data, the title of the video data, the presence / absence of additional information, and the like. Note that the transmission may be omitted when these pieces of information are always common.

  When the shooting in step S602 is performed with the movement of the vehicle 410, the shooting point information of the video data in the detailed information is information on the route of the section where the video is shot. The shooting time information is time zone information for shooting the video. In addition, all the position information of the travel route of the vehicle 410 may be transmitted. In this case, in another navigation device 421, the entire travel route of the vehicle 410 is displayed, and the section where the video data exists can be grasped.

  Further, a transmission time limit may be set for the data. For example, information that fluctuates over time, such as traffic jam information, has no information value even if information that is too old is transmitted. For this reason, for example, after a video data transmission request notification is transmitted, a setting is made so that data transmission is not performed after a predetermined time has elapsed.

  On the other hand, when video data is desired to be transmitted without a specific time limit, it may be possible to set “permanent transmission” or the like. Further, for example, a camera may be installed not only on a moving body such as the vehicles 410 and 420 but also on a feature near the road such as a traffic light. In this case as well, if “permanent transmission” is set without setting an access time limit, the user can always obtain video data at a fixed location.

  Furthermore, a video data transmission request notification is distributed only within a specific area by using a broadcast address transmitted only to a vehicle 420 in a specific base station, instead of a broadcast address transmitted to all the vehicles 420. May be. In addition, for example, a broadcast address that can specify a group of acquaintances or a group having terminals that can receive a specific service may be used.

  When the video data transmission request notification is distributed in step S606, the navigation device 411 waits until a video data transmission request signal is received from the navigation device 421 of the other vehicle 420 (step S607: No loop). When the video data transmission request signal is received (step S607: Yes), the video data is transmitted to the navigation device 421 of the vehicle 420 that has transmitted the video data transmission request signal (step S608), and the processing according to this flowchart is performed. Exit.

  If there is a plug-in necessary for using the video data to be transmitted, it is transmitted together with the video data. If there is a designation for batch transmission or streaming transmission, the transmission is performed in a format that matches the designation.

  Next, processing performed by the navigation device 421 of the vehicle 420 that receives information will be described. FIG. 7 is a flowchart illustrating a procedure of data reception processing of the vehicle navigation apparatus that receives data. In the flowchart of FIG. 7, the navigation device 421 first waits until receiving a video data transmission request notification from the navigation device 411 of the vehicle 410 (step S701: No loop).

  When the video data transmission request notification is received (step S701: Yes), the received notification is output by screen display on the display 513, audio output from the speaker 510, or the like (step S702). As described in step S604 of FIG. 6, the video data transmission request notification includes detailed information about the video data. The navigation device 421 outputs the received information and waits for the user to determine whether to receive data. That is, it is determined whether a video data transmission request for requesting transmission of video data has been input (step S703).

  When it is determined that the user receives video data and a video data transmission request for transmission of video data is input (step S703: Yes), the navigation device 421 sends a video data transmission request signal to the navigation device 411. A reply is made (step S704). At this time, the transmission format and length of the video data may be specified. As the communication address of the navigation device 411, the transmission source address of the video data transmission request notification received in step S701 is used.

  Then, it waits until the video data requested to be transmitted is received (step S705: No loop). When the video data is received (step S705: Yes), the processing according to this flowchart is terminated. On the other hand, when a video data transmission request is not input in step S703 (step S703: No), the process returns to step S701 and the subsequent processing is repeated.

  Here, the output form of the video data transmission request notification in step S702 will be described. FIG. 8 is an explanatory diagram illustrating an example of a screen display of a video data transmission request notification. In the explanatory diagram of FIG. 8, a new arrival message 801 of a video data transmission request notification is displayed on the display 513 of the navigation device 421.

  The new message 801 displays sender information 811, position information 812, category information 813, reception date / time information 814, access time limit information 815, and additional information presence / absence information 816 for the newly notified video data transmission request. . The sender information 811 is information that identifies the transmission source of the video data, such as the IDs of the vehicles 410 and 420, for example. The position information 812 indicates the position where the transmitted video data is acquired.

  The category information 813 indicates what category the content of the information belongs to. The reception date and time information 814 indicates the date and time when the video data transmission request notification is received. The access time limit information 815 indicates the transmission time limit of the video data set by the sender. Additional information presence / absence information 816 indicates the presence / absence of additional information regarding video data. These pieces of information are included in the video data transmission request notification.

  Further, a receivable data list 821 that is a list of video data transmission request notifications already received is displayed. Similar to the new arrival message 801, the sender information 831, the position information 832, the category information 833, the reception date / time information 834, the access time limit information 835, and the additional information presence / absence information 836 are displayed in the receivable data list 821. .

  In the illustrated example, the data list is displayed in the order of reception date and time, but the data can be sorted or selected according to each information. Further, data can be narrowed down by inputting a keyword in the search input box 841 or selecting a genre of data from the genre selection box 842. Note that data whose access time limit has passed is deleted from the receivable data list 821.

  When the “display on map” button 851 is pressed, the points indicated by the position information 812 and 832 of the received video data transmission request notification are drawn and displayed on the map information stored in the navigation device 421. This makes it possible for the user to intuitively grasp a point where a video data transmission request can be made.

  When displaying the location information on the map, the location information of the video data of the vehicle 410 that has transmitted the video data transmission request notification, that is, the location where the video data was captured is displayed as an icon. Also, when the number of captured video data is large, or when the point where the video data was captured has a certain section (that is, when captured while moving), the route on the map is filled (road filling). ) It's good. As a result, it is possible to more accurately grasp which point the video data transmitted from the point information transmission source is.

  Further, when the “display only on route” button 852 is pressed, only the video data transmission request signal on the route to the destination point set by the navigation device 421 is displayed. Thereby, the user can display only the point information on the route on which the own vehicle will travel and obtain video data of the current situation.

  As described above, according to the data transmission / reception system 400 according to the embodiment, in the communication network including a plurality of communication terminals that can communicate with each other, the data regarding the current position acquired by the vehicle 410 is transmitted to the other vehicle 420. Send to other communication terminals. At that time, by distributing the video data acquisition location and acquisition date and time according to the video data transmission request notification, the passengers of other vehicles 420 can more accurately determine whether or not to request video data transmission. Can do.

  In addition, it is possible to select an arbitrary place in the travel route of the vehicle 410 and to select and transmit video data of a place desired by the passenger of the vehicle 420 from among them. For this reason, compared with the case where the image | video of only the current position of the vehicle 410 is transmitted, possibility that the image data which the passenger of the vehicle 420 needs exists can be raised.

  In addition, by setting the video data transmission time limit, it is possible to avoid transmitting video data whose information value is diminished over time to another vehicle 420. In this way, by providing the material for determining whether or not the video data is necessary, it is possible to appropriately determine the video data required by itself from a huge amount of information on the network.

  In the above-described embodiment, the video data is transmitted and received between the vehicles 410 and 420. However, a server for video data transmission / reception may be installed on the network to centrally manage the data. For example, the passenger of the vehicle 410 uploads video data to be transmitted to the server, and at the same time, the server transmits a video data transmission request notification to the other vehicle 420. The passenger of the other vehicle 420 that has received the video data transmission request notification accesses the server every time the video data is used or periodically downloads the necessary video data. Alternatively, a data transmission request may be made to the server.

  According to the configuration as described above, the communication amount and transmission / reception status of the video data can be centrally managed by the server. Further, since data is not directly transmitted and received, the communication addresses of the vehicles 410 and 420 are not known to each other, and personal information can be protected.

  The data transmission method and data reception method described in this embodiment can be realized by executing a program prepared in advance on a computer such as a personal computer or a workstation. This program is recorded on a computer-readable recording medium such as a hard disk, a flexible disk, a CD-ROM, an MO, and a DVD, and is executed by being read from the recording medium by the computer. The program may be a transmission medium that can be distributed via a network such as the Internet.

It is a block diagram which shows the functional structure of the data transmission / reception system concerning embodiment. It is a flowchart which shows the procedure of the data transmission process of a 1st communication terminal. It is a flowchart which shows the procedure of the data reception process of a 2nd communication terminal. It is explanatory drawing which shows the system configuration | structure of the data transmission / reception system concerning an Example. It is a block diagram which shows the hardware constitutions of a navigation apparatus. It is a flowchart which shows the procedure of the data transmission process of the navigation apparatus of the vehicle which transmits data. It is a flowchart which shows the procedure of the data reception process of the navigation apparatus of the vehicle which receives data. It is explanatory drawing which shows an example of the screen display of a video data transmission request notification.

Explanation of symbols

100 data transmission / reception system 110 first communication terminal 111 input unit 112 acquisition unit 113 distribution unit 114 reception unit 115 transmission unit 120 second communication terminal 121 first reception unit 122 output unit 123 input unit 124 transmission unit 125 second Receiver

Claims (12)

A communication terminal in a communication network composed of a plurality of communication terminals capable of communicating with each other,
An input means for receiving imaging input of video data;
An acquisition means for acquiring the video data together with the location information of the communication terminal during imaging of the video data when imaged and input by the input means;
Distribution means for distributing the point information acquired by the acquisition means to the other communication terminal;
Receiving means for receiving the transmission request signal of the video data from the other communication terminal as a result of the distribution of the point information by the distribution means;
When the transmission request signal is received by the reception means, the transmission means for transmitting the video data to the communication terminal that has transmitted the transmission request signal;
A communication terminal comprising: A communication terminal in a communication network composed of a plurality of communication terminals capable of communicating with each other,
An input means for receiving imaging input of video data;
An acquisition means for acquiring the video data together with information relating to the imaging time of the video data when imaged and input by the input means;
Distribution means for distributing information on the imaging time acquired by the acquisition means to the other communication terminal;
Receiving means for receiving the transmission request signal of the video data from the other communication terminal as a result of the distribution of the point information by the distribution means;
When the transmission request signal is received by the reception means, the transmission means for transmitting the video data to the communication terminal that has transmitted the transmission request signal;
A communication terminal comprising: A communication terminal in a communication network composed of a plurality of communication terminals capable of communicating with each other,
Input means for receiving imaging input of video data;
An acquisition unit configured to acquire the video data together with speed information of the communication terminal during imaging of the video data when the input is performed by the input unit;
Distribution means for distributing the speed information acquired by the acquisition means to the other communication terminal;
Receiving means for receiving the transmission request signal of the video data from the other communication terminal as a result of the speed information being delivered by the delivery means;
When the transmission request signal is received by the reception means, the transmission means for transmitting the video data to the communication terminal that has transmitted the transmission request signal;
A communication terminal comprising: A communication terminal in a communication network composed of a plurality of communication terminals capable of communicating with each other,
First receiving means for receiving imaging point information of video data captured by a communication terminal other than the communication terminal;
Output means for outputting imaging point information received by the first receiving means;
An input means for receiving an input of a transmission request for the video data when the imaging means information is output by the output means;
When the transmission request is input by the input means, a transmission means for transmitting a transmission request signal for the video data;
A second receiving means for receiving the video data from the other communication terminal as a result of the transmission request signal being transmitted by the transmitting means;
A communication terminal comprising: A communication terminal in a communication network composed of a plurality of communication terminals capable of communicating with each other,
First receiving means for receiving imaging time information of video data captured by a communication terminal other than the communication terminal;
Output means for outputting imaging time information received by the first receiving means;
An input unit that receives an input of a transmission request for the video data when the imaging unit outputs the imaging time information;
When the transmission request is input by the input means, a transmission means for transmitting a transmission request signal for the video data;
A second receiving means for receiving the video data from the other communication terminal as a result of the transmission request signal being transmitted by the transmitting means;
A communication terminal comprising: A communication terminal in a communication network composed of a plurality of communication terminals capable of communicating with each other,
First receiving means for receiving speed information of a communication terminal other than the communication terminal;
Output means for outputting speed information received by the first receiving means;
When the speed information is output by the output means, an input means for receiving an input of a transmission request for video data associated with the speed information;
When the transmission request is input by the input means, a transmission means for transmitting a transmission request signal for the video data;
A second receiving means for receiving the video data from the other communication terminal as a result of the transmission request signal being transmitted by the transmitting means;
A communication terminal comprising: A data transmission method using a communication terminal in a communication network composed of a plurality of communication terminals capable of communicating with each other,
An input process for receiving imaging input of video data;
An acquisition step of acquiring the video data together with the location information of the communication terminal during imaging of the video data when imaged and input by the input step;
A distribution step of distributing the point information acquired by the acquisition step to the other communication terminal;
As a result of the distribution of the point information by the distribution step, a reception step of receiving the transmission request signal of the video data from the other communication terminal;
When a transmission request signal is received by the reception step, a transmission step of transmitting the video data to a communication terminal that has transmitted the transmission request signal;
A data transmission method comprising: A data receiving method using a communication terminal in a communication network composed of a plurality of communication terminals capable of communicating with each other,
A first receiving step of receiving imaging point information of video data captured by a communication terminal other than the communication terminal;
An output step of outputting imaging point information received by the first reception step;
When the imaging point information is output by the output step, an input step of receiving an input of the transmission request for the video data;
When there is an input of the transmission request by the input step, a transmission step of transmitting a transmission request signal of the video data;
A second reception step of receiving the video data from the other communication terminal as a result of the transmission request signal being transmitted by the transmission step;
A data receiving method comprising:   A data transmission program for causing a computer to execute the data transmission method according to claim 7.   A data reception program for causing a computer to execute the data reception method according to claim 8.   A computer-readable recording medium on which the data transmission program according to claim 9 is recorded. A computer-readable recording medium on which the data receiving program according to claim 10 is recorded.

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