WO2007043524A1

WO2007043524A1 - Communication terminal, data transmitting method, data receiving method, data transmitting program, data receiving program, and recording medium

Info

Publication number: WO2007043524A1
Application number: PCT/JP2006/320210
Authority: WO
Inventors: Hiroaki Shibasaki
Original assignee: Pioneer Corporation
Priority date: 2005-10-13
Filing date: 2006-10-10
Publication date: 2007-04-19

Abstract

First and second communication terminals (110,120) are communication terminals in a communication network comprising a plurality of communication terminals that can communicate with one another. The first communication terminal (110) comprises an acquiring part (111), a receiving part (112), an extracting part (113) and a transmitting part (114). The acquiring part (111) acquires the data of an image captured from the position of the first communication terminal (110). The receiving part (112) receives, from the second communication terminal (120), both a transmission request signal that requests a transmission of the image data acquired by the acquiring part (111) and a signal related to a location designated by the second communication terminal (120). When the receiving part (112) receives the transmission request signal, the extracting part (113) extract, from the image data, an image data that is in accordance with the designated location. The transmitting part (114) transmits the image data extracted by the extracting part (113) to the second communication terminal (120) having transmitted the transmission request signal.

Description

Specification

Communication terminal, data transmission method, data reception method, data transmission program, data reception program, and recording medium

Technical field

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, the use of the present invention is not limited to the communication terminal, the data transmission method, the data reception method, the data transmission program, the data reception program, and the recording medium described above.

Background art

[0002] Conventionally, due to the development of network infrastructure and the spread of information and communication terminals, data (information) has been exchanged between individual users via the network, and a community sharing the same information has been formed. And

[0003] In such a community, for example, other mobile terminals receive signals transmitted from mobile terminals within the short-range wireless communication range by the short-range wireless communication unit, and exchange necessary data. The received data is displayed on the display and prompts you to move to the next phase. 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, personal detail data is exchanged between the terminals (see, for example, Patent Document 1 below).

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[0004] Patent Document 1: JP 2001-333451 A

Disclosure of the invention

Problems to be solved by the invention

[0005] However, according to the above-described conventional technology, there is a problem that it is impossible to know whether the information held by the communication partner is the information that the self needs. In particular, when there are a large number of communicable parties, an example is the problem that it is necessary to efficiently determine which communication partner power information is to be acquired.

[0006] Even if the current position of the communication partner can be specified to some extent, the information held by the communication partner is retained. An example is the problem that information is not necessarily about the place. In particular, in communications using mobile communication terminals, the problem is that the location of the information is an important factor in determining whether or not it is capable of acquiring information. It is done.

[0007] Further, as an example, there is a problem that information held by the communication partner cannot know the time (time) when it was generated. In particular, for information that changes from moment to moment, information that does not have the information value of the information that has passed since it was created, and when it was created, whether it was the ability to acquire information. An example is the problem of being an important factor in judging.

Means for solving the problem

[0008] In order to solve the above-described problems and achieve the object, a communication terminal according to the invention of claim 1 is a communication terminal in a communication network having a plurality of communication terminals capable of communicating with each other, and the communication terminal An acquisition means for acquiring video data captured from the position of the terminal, a transmission request signal for the video data acquired by the acquisition means, and a point designated by another communication terminal other than the communication terminal (hereinafter referred to as “designation”). A reception means for receiving a signal related to the point “t” from the other communication terminal, and when the transmission request signal is received by the reception means, a video corresponding to the designated point from the video data. Extraction means for extracting data, and transmission means for transmitting the video data extracted by the extraction means to the communication terminal that has transmitted the transmission request signal. .

[0009] Further, the communication terminal according to the invention of claim 2 is a communication terminal in a communication network composed of a plurality of communication terminals capable of communicating with each other, and the video data captured from the position of the communication terminal is received. An acquisition means for acquiring, a transmission request signal of video data acquired by the acquisition means, and a signal related to a time specified by a communication terminal other than the communication terminal (hereinafter referred to as “specified time”), Receiving means for receiving from another communication terminal; extraction means for extracting video data corresponding to the specified time from the video data when the transmission request signal is received by the receiving means; and extracting by the extracting means A transmission means for transmitting the output video data to the communication terminal that has transmitted the transmission request signal. [0010] The communication terminal according to the invention of claim 3 is a communication terminal in a communication network including a plurality of communication terminals capable of communicating with each other, and is imaged from the position of the movable communication terminal. Acquisition means for acquiring the received video data, a transmission request signal of the video data acquired by the acquisition means, and a moving speed designated by a communication terminal other than the communication terminal (hereinafter referred to as “designated speed”) And when the transmission request signal is received by the receiving means, the video data when the communication terminal is at the specified speed is selected from the video data. Extracting means for extracting, and transmitting means for transmitting the video data extracted by the extracting means to the communication terminal that has transmitted the transmission request signal.

[0011] Further, the communication terminal according to the invention of claim 4 is a communication terminal in a communication network composed of a plurality of communication terminals that can communicate with each other, a specification means for receiving specification of an arbitrary point, Positional power of other communication terminals other than the communication terminal The transmission request signal of the imaged video data and the signal related to the point designated by the designation means (hereinafter referred to as “designated point”) Transmission means for transmitting to a terminal, and reception means for receiving, from the other communication terminal, video data corresponding to the designated point among the video data as a result of transmission of a signal by the transmission means. And

[0012] Further, the communication terminal according to the invention of claim 5 is a communication terminal in a communication network composed of a plurality of communication terminals capable of communicating with each other, and a specification means for receiving specification of an arbitrary time, Positional force of other communication terminals other than the communication terminal The transmission request signal of the imaged video data and the signal related to the time specified by the specifying means (hereinafter referred to as “specified time”) Transmission means for transmitting to a terminal, and reception means for receiving, from the other communication terminal, video data corresponding to the specified time among the video data as a result of transmission of a signal by the transmission means. And

[0013] Further, 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 is an arbitrary communication terminal other than the communication terminal. A designation means for accepting designation of a moving speed, a transmission request signal for video data captured from the position of the other communication terminal, and a signal relating to the moving speed (hereinafter referred to as “designated speed”) designated by the designation means. Is transmitted to the other communication terminal. And receiving means for receiving, from the other communication terminal, video data of the video data when the other communication terminal is at the specified speed as a result of transmission of the signal by the transmission means. It is characterized by providing.

[0014] The data transmission method according to the invention of claim 7 is a data transmission method using a communication terminal in a communication network having a plurality of communication terminal capabilities capable of communicating with each other. An acquisition step of acquiring captured video data, a transmission request signal of the video data acquired by the acquisition step, and a point designated by a communication terminal other than the communication terminal (hereinafter referred to as “designated point”) A reception process for receiving a signal related to the other communication terminal, and an extraction process for extracting video data corresponding to the designated point from the video data when a transmission request signal is received by the reception process; A transmission step of transmitting the video data extracted in the extraction step to the communication terminal that has transmitted the transmission request signal.

[0015] Further, the data receiving method according to the invention of claim 8 is a data receiving method using communication terminals in a communication network having a plurality of communication terminals capable of communicating with each other, and specifying an arbitrary point. A designation process to be received, a transmission request signal of video data captured from a position of a communication terminal other than the communication terminal, and a signal related to a point designated by the designation process (hereinafter referred to as “designated point”). A transmission step of transmitting to the other communication terminal; and a reception step of receiving, from the other communication terminal, video data corresponding to the designated point of the video data as a result of transmission of the signal by the transmission step; It is characterized by including.

[0016] A data transmission program according to claim 9 causes a computer to execute the data transmission method according to claim 7.

[0017] A data receiving program according to the invention of claim 10 causes a computer to execute the data receiving method according to claim 8.

[0018] Further, a recording medium according to the invention of claim 11 is readable by a computer recording the data transmission program according to claim 9.

[0019] Further, a recording medium according to the invention of claim 12 is characterized in that it can be read by a computer on which the data reception program according to claim 10 is recorded. Brief Description of Drawings

[FIG. 1] FIG. 1 is a block diagram showing a functional configuration of a data transmission / reception system that is useful for an embodiment.

Yes

FIG.

FIG. 2 is a flowchart showing a procedure of data transmission processing of the first communication terminal.

FIG. 3 is a flowchart showing a procedure of data reception processing of the second communication terminal.

FIG. 4 is an explanatory diagram showing a system configuration of a data transmission / reception system according to the embodiment.

FIG. 5 is a block diagram showing a hardware configuration of the navigation device.

FIG. 6 is a flowchart showing a procedure of data transmission processing of a navigation device for a vehicle that transmits data.

FIG. 7 is a flowchart showing a procedure of data reception processing of the navigation device for a vehicle that receives data.

FIG. 8 is an explanatory diagram showing an example of a screen display of a video data transmission request notification. Explanation of symbols

Data transmission / reception system

110 First communication terminal

111 Acquisition Department

112 Receiver

113 Extractor

114 Transmitter

120 Second communication terminal

121 Designated part

122 Transmitter

123 Receiver

BEST MODE FOR CARRYING OUT THE INVENTION

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 will be described below in detail with reference to the accompanying drawings. [0023] (Embodiment)

First, the functional configuration of the data transmission / reception system that is relevant to the embodiment will be described. FIG. 1 is a block diagram showing a functional configuration of a data transmission / reception system according to the embodiment. In FIG. 1, a 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 having a plurality of communication terminals capable of communicating with each other.

The first communication terminal 110 includes an acquisition unit 111, a reception unit 112, an extraction unit 113, and a transmission unit 114. The acquisition unit 111 acquires image data captured from the positional power of the first communication terminal 110. The position of the first communication terminal 110 is the current position of the first communication terminal 110 at each time. The video data includes still images and moving images. The acquisition unit 111 accepts input of video data captured by a camera provided in the first communication terminal 110, for example.

[0025] The receiving unit 112 is designated by the video data transmission request signal acquired by the acquiring unit 111 and a communication terminal other than the first communication terminal 110 (including the second communication terminal 120). A signal related to a point (hereinafter referred to as “designated point”) is received from another communication terminal. A signal related to a designated point is information that identifies one point or a certain range on map information, such as latitude / longitude information, address, and place name.

[0026] In addition to the signal related to the designated point, the receiving unit 112 relates to a signal related to a designated time (hereinafter referred to as "designated time") and a designated moving speed (hereinafter referred to as "designated speed"). A signal may be received. The signal related to the specified time is information specifying one point or a certain range on the time axis such as time and time zone. For example, when the first communication terminal 110 is movable, the signal related to the specified speed specifies the movement speed of the first communication terminal 110 such as the speed per second (second / second) or the presence / absence of movement (stopping / determination information). Information. A signal related to a specified point, a signal related to a specified time, and a signal related to a specified speed may each receive a plurality of signals, or a combination of different types of signals.

[0027] The extraction unit 113 receives video data when the reception unit 112 receives a transmission request signal. Extract video data according to the specified point, specified time, and specified speed. The extraction unit 113 extracts, for example, video data captured by the acquisition unit 111 from video data shot in a predetermined area including the point indicated by the signal related to the specified point or the specified point. Further, the extraction unit 113 extracts, for example, video data shot at a predetermined time zone including a specified time and video data shot at a predetermined moving speed including a specified speed.

[0028] Transmitting section 114 transmits the video data extracted by extracting section 113 to the communication terminal (for example, second communication terminal 120) that has transmitted the transmission request signal. For example, the transmission unit 114 specifies the communication address of the second communication terminal 120 for the transmission request signal power received by the reception unit 112 and transmits the video data. The video data may be transmitted as a single file of video data for a certain period of time, or may be transmitted while maintaining a connection for a certain period. Furthermore, depending on the format of the video data and additional information, you may attach a plug-in required for use at the destination.

Next, a functional configuration of second communication terminal 120 will be described. The second communication terminal 120 includes a designation unit 121, a transmission unit 122, and a reception unit 123. The designation unit 121 accepts designation of an arbitrary point. The designation unit 121 may accept designation of an arbitrary time or moving speed. When the moving speed is specified, the moving speed of the other communication terminal other than the second communication terminal 120 is specified.

[0030] The designation unit 121 may accept designation of a plurality of points, times, and moving speeds, or may accept different types of designations such as points and times. Hereinafter, the point and the time 'moving speed at which the designation is accepted by the designation unit 121 are referred to as “designated point”, “designated time”, and “designated speed”, respectively.

[0031] Specifically, the designation unit 121 accepts designation of a point, time, and moving speed using, for example, an operation button touch panel, a voice input device, or the like. At this time, the length of the video data and the video data transmission method (batch transmission / streaming transmission) may be specified.

[0032] The transmission unit 122 uses the transmission request signal of the video data in which the positional force of the communication terminal other than the second communication terminal 120 (for example, the first communication terminal 110) is also imaged, and the designation unit 121 A signal related to the designated designated point is transmitted to another communication terminal. In addition, when the designation unit 121 designates the designated time and the designated speed, the transmission unit 122 transmits a signal concerning the designated time and a signal concerning the designated speed, respectively.

[0033] As a result of the transmission unit 122 transmitting a signal related to the designated point, the receiving unit 123 receives video data corresponding to the designated point from the video data. In addition, when the transmission unit 122 transmits a signal related to the specified time and a signal related to the specified speed, the receiving unit 123 receives video data corresponding to the specified time and the specified speed, respectively. The video corresponding to the designated spot is, for example, a picture taken within a designated area including the designated spot or the designated spot.

Next, the procedure of data transmission / reception processing by the data transmission / reception system 100 will be described. The following description is divided into data transmission processing of the first communication terminal 110 that performs data transmission and data reception processing of the second communication terminal 120 that performs data reception. 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 acquires image data captured by the acquisition unit 111 based on the positional power of the first communication terminal 110 (step S 2 01). . Next, the receiving unit 112 determines whether or not the video data transmission request signal has been received from other communication terminals including the second communication terminal 120 (step S202).

[0036] When the video data transmission request signal is received (step S202: Yes), the extraction unit 113 extracts video data according to the designated point, the designated time, and the designated speed received together with the transmission request signal. (Step S203). At this time, if the video length is specified, the video data is extracted according to the specification.

[0037] On the other hand, when the transmission request signal is not received (step S202: No), the process returns to step S201, and the acquisition of the video data is continued. Note that the first communication terminal 110 continues to acquire the video data even when the processing from step S203 is performed.

[0038] Then, the transmission unit 114 transmits the video data to the communication terminal that has transmitted the transmission request signal (step S204), and the processing according to this flowchart ends. Video data can be sent in batches of video data for a certain period of time, or can be streamed while maintaining a certain period of time. [0039] 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 waits until a video data transmission request is received (step S301: No loop). When there is a transmission request (step S301: Yes), the designation unit 121 accepts designation of a point / time / movement speed (step S302). The designation of the point 'time' moving speed may be accepted for one of these items, or it may be accepted for multiple items.

[0040] Subsequently, the transmission unit 122 transmits a video data transmission request signal and a signal relating to a designated point and a designated time / designated speed (step S303). For the signal related to the specified point, specified time, and specified speed, a signal related to the item received in step S302 is transmitted. Then, it waits until video data is received by the receiving unit 123 (step S304: No loop). When video data is received (step S304: Yes), the processing according to this flowchart is terminated.

[0041] As described above, according to the data transmission / reception system 100 according to the embodiment, it is acquired by the first communication terminal 110 in a communication network having a plurality of communication terminals capable of communicating with each other. The video data is extracted based on the designated point / time's moving speed, and transmitted to other communication terminals including the second communication terminal 120. As a result, the second communication terminal 120 can acquire the video data acquired by the first communication terminal 110 by designating the location, time, and moving speed.

[0042] It should be noted that information on the current position and moving speed of first communication terminal 110 may be distributed to other communication terminals in advance. As a result, the other communication terminals can obtain the travel history of the first communication terminal 110 and know the force with which the first communication terminal 110 holds and holds the desired video data.

[0043] When information on the current position, moving speed, etc. is distributed in this way, the first communication terminal 110 receives video based on the elapsed time from the distribution and the reception time of the transmission request signal. It is also possible to determine whether or not to send data. As a result, it is possible to avoid distributing data whose information value fades with time to other communication terminals.

[0044] Further, in the above-described embodiment, the video data acquired by the first communication terminal 110 is used. The video data acquired by the first communication terminal 110 may be transmitted to the second communication terminal 120 via the communication server.

[0045] Specifically, for example, 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 is 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.

[0046] Thereby, for example, the communication volume and transmission / reception status of data can be centrally managed by the communication server. In addition, since direct data transmission / reception is not performed, personal information in which the communication addresses of the first communication terminal 110 and the second communication terminal 120 are not known to each other can be protected.

Example

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

First, the system configuration of the data transmission / reception system 400 according to the embodiment will be described. FIG. 4 is an explanatory diagram showing a system configuration of a data transmission / reception system according to the embodiment. In Fig. 4! / Turn on road L1, L2 and drive 410, 420 (420a ~ 420e) to the road.

Further, navigation devices 411 and 421 (421a to 421e) are mounted on vehicles 410 and 420, respectively. The navigation devices 411 and 421 communicate with the roadside devices 430 (430a to 430c) installed on the side of the road on which the vehicles 410 and 420 run, respectively, and send and receive data.

[0050] The roadside devices 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. The roadside machine 430 is shown in the figure, roads and parking lots It is installed so that the points where vehicles 410 and 420 can enter can be covered as a communication area.

[0051] For each of the vehicles 410 and 420, an ID for identifying the own vehicle is uniquely assigned to each of the vehicles 410 and 420, such as an IP address. This ID is used as a communication address in the data transmission / reception system 400, and the navigation devices 411, 421 can transmit information to a specific vehicle 410, 420 using the ID of the vehicle 410, 420. The IDs of the vehicles 410 and 420 are stored in the navigation devices 411 and 421, respectively.

[0052] In addition, 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 roadside devices 430. . By using the broadcast address, data can be transmitted to unspecified vehicles 410 and 420 even when the IDs of the individual vehicles 410 and 420 are not known. A broadcast address may be provided for each individual roadside machine 430. 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.

[0053] In Fig. 4, all the vehicles 410 and 420 in the communication area of the roadside machine 430 are intended to transmit information using the broadcast address, but this is not restrictive. Sending information using the broadcast address including the vehicle. In other words, not only between vehicles in the communication area of Fig. 4, but also other vehicles that are outside the communication area of Fig. 4 and are traveling on roads other than Ll and L2, or outside the communication area of Fig. 4. Thus, the information may be transmitted using a broadcast address including other vehicles traveling far behind the vehicles 410 and 420. As a result, information can be transmitted to unspecified vehicles in a wide range.

[0054] In addition, an area for transmitting information may be designated and transmitted. As described above, when the roadside machine 430 is provided with a broadcast address, the area can be designated by designating the roadside machine 430. This designation is naturally possible from a vehicle traveling on another road, and when the vehicle power is transmitted, for example, by specifying the roadside machine 430c, the information is distributed to the vehicles in the area C. Will be. [0055] In addition, the navigation devices 411 and 421 are each provided with a camera for video shooting. The camera can capture still images and moving images. In addition, it can capture video data of still images and videos taken with a digital camera or mobile phone camera. Passengers of vehicles 410 and 420 can transmit video data captured by the cameras of navigation devices 411 and 412 or captured from other devices over the network. it can.

[0056] 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, or the video data of the field of interest may be transmitted. Is expensive.

[0057] Hereinafter, the vehicle that provides (sends) video data will be described as vehicle 410, and the vehicle that provides (receives) video data will be described as vehicle 420. Any of the vehicles 410 and 420 may be the transmission side and the reception side.

[0058] (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 showing a hardware configuration of the navigation device. In FIG. 5, navigation devices 411 and 421 include 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 IZF (interface) 508, A microphone 509, a speaker 510, an input device 511, a video IZF 512, a display 513, a communication I / F 514, and a GPS Resino 515 are provided. In addition, each component 501 to 515 is connected by a bus 520.

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 queryer for the CPU 501.

The magnetic disk drive 504 controls data reading / writing to the magnetic disk 505 according to the control of the CPU 501. Magnetic disk 505 is a magnetic disk drive. Record the data written under the control of Eve 504. As the magnetic disk 505, for example, HD (node disk) or FD (flexible disk) can be used.

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

The audio IZF 508 is connected to an audio input microphone 509 and an audio output speaker 510. Audio received by the microphone 509 is AZD converted in the audio IZF508. Audio is output from the speaker 510. Note that the sound input from the microphone 509 can be recorded on the magnetic disk 505 or the optical disk 507 as sound data.

[0063] Further, examples of the input device 511 include a remote controller, a keyboard, a mouse, and a touch panel that are provided with a plurality of keys for inputting characters, numerical values, various instructions, and the like. Furthermore, the input device 511 can connect other information processing terminals (hereinafter simply referred to as devices) such as a digital camera to input / output data.

[0064] In addition, the input device 511 includes a camera capable of shooting a still image or a moving image (video). 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 digital camera or a mobile phone to the input device 511 and capture video data shot by each device.

In addition, video IZF 512 is connected to display 513. Specifically, the video IZF512 is output from, for example, a graphic controller that controls the entire display 513, a buffer memory such as VRAM (Video RAM) that temporarily records image information that can be displayed immediately, and a graphic controller. It is configured by a control IC that controls display of the display 513 based on image data.

[0066] Display 513 displays icons, cursors, menus, windows, or various data such as characters and images. As this display 513, for example, a CRT, a TFT liquid crystal display, a plasma display, or the like can be adopted. In addition, the communication IZF 514 is connected to a network via radio 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 functions as an interface between the communication network and the CPU 501.

[0068] Communication networks include LANs, WANs, public line networks, mobile phone networks, and the like. Specifically, the communication IZF514 is composed of, for example, an FM tuner, VICS (Vehicle Information and Communication System) Z beacon resino, wireless navigation device, and other navigation devices. Get road traffic information such as traffic regulations. VICS is a registered trademark.

[0069] In addition, the GPS receiver 515 acquires information indicating the current position of the vehicles 410 and 420 (the current position of the navigation devices 411 and 421) using output values of GPS (Global Positioning System) and various sensors. To do. The information indicating the current position is information specifying one point on the map information, such as latitude and longitude.

[0070] (Data Transmission / Reception Processing of Data Transmission / Reception System 400)

Next, the 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 showing a procedure of data transmission processing of the navigation device for a vehicle that transmits data. In the flowchart of FIG. 6, the navigation apparatus 411 captures an image of the surroundings of the vehicle 410 using a camera provided in the own apparatus (step S601). Then, detailed information is added to the video data of the shot video and recorded (step S602). At this time, if there are restrictions on hardware resources such as disk capacity, images may be taken at regular intervals or at regular intervals. At the same time as detailed information, voice information or text information (hereinafter “additional information” t t) may be added.

[0072] The detailed information added in step S602 includes, for example, the current location of the navigation device 411 at the time of video data capture (ie, the video data capture location), and the time (time of the video data capture). ), Video data categories (for example, The presence of video data titles, video data titles, and additional information (such as audio information and text information for situational commentary).

[0073] Further, the detailed information may be added with moving speed information such as the force at which the vehicle 410 is stopped at the time of photographing and whether the vehicle is traveling at high speed. In this case, for example, selecting a video captured by the stopped vehicle 410 as a fixed point observation, a video of the vehicle 410 traveling at a high speed on a desired route, a video of the vehicle 410 traveling at a low speed in a traffic jam, etc. Can do.

[0074] Video data can be selected or sorted using detailed information as an index.

In addition, for example, only the video shot in a certain time zone can be cut out from the video data and saved as a separate file. Note that information that changes continuously among the detailed information, for example, the shooting position of the video data and the time when the video data was shot may be added at regular intervals instead of continuously.

Next, navigation device 411 determines whether or not the user wishes to transmit video data (step S603). Specifically, for example, it is determined whether information indicating that video data transmission is desired is input via the input device 511. When it is desired to transmit video data (step S603: Yes), a video data transmission request notification is delivered to the navigation device 421 of another vehicle 420 using the broadcast address (step S604).

[0076] The video data transmission request notification distributed in step S604 includes detailed information about the video data desired to be transmitted. As described above, the detailed information includes the shooting location of the video data, the time (time) when the video data was shot, the video data category, the title of the video data, and the presence / absence of additional information. Note that the video data transmission request notification may be a notification including the vehicle position of the vehicle 410 and the notified time instead of the notification including the detailed information about the video data. Since the vehicle 410 constantly shoots surrounding images, the vehicle 420 can display the image of the desired location by simply making a notification including the vehicle position and the notified time. You can know that the 410 is shooting and whether the video is new or old. Incidentally, the vehicle position may be notified including past driving history, or may be notified continuously or periodically including updated information of the vehicle position.

[0077] Among the detailed information, the shooting point of the video data (hereinafter referred to as "point information") This is information on the current position and information on the route where the video was taken. In addition, information on the shooting time is transmitted at several points on the route where the video was shot. This point may be at a certain distance or at regular intervals, and should be selected according to the features of the map information such as intersections.

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 sending a video data transmission request notification, set to send data after a certain period of time! /.

[0079] On the other hand, if you want to send video data without a specific time limit for fixed point observation, such as when the vehicle is stationary at a point where there is 410 power, you can set it to “permanent transmission”. Also good. In addition, for example, a camera may be installed on a feature near a road such as a signal signaled by a moving body such as the vehicles 410 and 420 alone. In this case as well, “permanent transmission” may be used without setting an access time limit. The user can always obtain video data at a fixed location.

[0080] Further, it is desirable to transmit video data only within a specific area, such as by using a broadcast address transmitted only to a vehicle 420 in a specific base station, rather than a broadcast address transmitted to all vehicles 420. Notifications may be distributed. In addition, for example, a broadcast address that can specify a group or the like having a terminal that can receive a specific service if the friend's dull is used may be used.

On the other hand, if transmission of video data is not desired (step S603: No), the process returns to step S601 to continue video shooting. Even when the processing after step S604 is performed, the navigation device 411 continues to capture surrounding images in parallel with the processing.

[0082] When the video data transmission request notification is delivered in step S604, 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 S605: No No. loop). When the video data transmission request signal is received (step S605: Yes), video data for transmission is generated based on the specified items included in the video data transmission request signal (step S606).

[0083] The specified items included in the video data transmission request signal are, for example, that video data is captured. Such as the travel location and time, and the moving speed of the vehicle 410 at the time of shooting. The navigation device 411 cuts out only the portion that matches the specified items from the video data that has been shot and stored, and generates image data for transmission.

[0084] For example, if you drive from 2 pm to 3 pm through Kasumigaseki Rainbow Bridge to Maihama, “Rainbow Bridge” is designated as the designated item (point)! Image data for transmission is generated by cutting out video during bridge travel and video data in a predetermined range.

[0085] If "2 pm force is also 2:10 pm" is designated as the designated item (time), the image data for transmission is generated by cutting out the video data of the corresponding time zone. In addition, when “stop” is specified as the specified item (movement speed), video data that is stopped due to traffic jams or waiting for traffic lights is cut out to generate image data for transmission. The length of the video to be cut out may be set on the navigation device 411 side, or may be set each time. It may also be the length specified by the video data transmission request signal source.

[0086] Then, the generated video data is transmitted to the navigation device 421 of the vehicle 420 that has transmitted the video data transmission request signal (step S607), and the processing according to this flowchart ends. If there is a plug-in necessary to use the video data to be transmitted, it is transmitted together with the video data. In addition, if there is a designation of batch transmission capability streaming transmission, it will be sent in a format that matches the designation.

[0087] Next, processing performed by the navigation device 421 of the vehicle 420 that receives information will be described. FIG. 7 is a flowchart showing the procedure of the data reception process of the vehicle navigation device 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).

[0088] When the video data transmission request notification is received (step S701: Yes), the received notification is output by screen display by 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 The received information is output, and a determination is made as to whether or not the user receives data. That is, it is determined whether or not a video data transmission request for requesting transmission of video data has been input (step S703).

[0089] 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), navigation device 421 sends a video to navigation device 411. A data transmission request signal is returned (step S704).

Here, the video data transmission request input in step S 703 includes the transmission request, the shooting location and time of the video, the moving speed at the time of shooting, etc. (specified items). Note that the video data that can be transmitted by the transmission source of the video data transmission request notification may be received as it is without inputting the designated items. Also, 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.

[0091] Then, the process 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 ends. On the other hand, if no video data transmission request is 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 showing an example of a screen display of a video data transmission request notification. In the explanatory diagram of FIG. 8, the display 513 of the navigation device 421 displays a new message 801 of a video data transmission request notification.

The new message 801 includes 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 newly notified video data transmission request. Is displayed. The sender information 811 is information that identifies the transmission source of the video data, such as the ID of the vehicle 410, 420, for example. The position information 812 indicates the position where the transmitted video data is acquired.

[0094] Category information 813 indicates what category the content of the information belongs to. The reception date / time information 814 indicates the date / time when the video data transmission request notification is received. Access time limit information 815 indicates the transmission time limit of the video data set by the sender. Presence / absence information of additional information 8 Reference numeral 16 denotes the presence / absence of additional information related to video data. This information is included in the video data transmission request notification.

Furthermore, a receivable data list 821 which is a list of video data transmission request notifications already received is displayed. Receivable data list 821 displays sender information 831, location information 832, category information 833, reception date and time information 834, access time limit information 835, and additional information presence / absence information 836, just like new message 801. The

In the example shown in the figure, the data list is displayed in order from the newest reception date and time !, but the data can be sorted or selected according to the respective information. Further, data can be narrowed down by inputting a keyword in the search input button 841 or selecting a genre of data from the genre selection box 842. Data for which the access time limit has passed is deleted from the receivable data list 821.

[0097] When the “display on map” button 851 is pressed, the point indicated by the position information 812, 832 of the received video data transmission request notification is drawn on the map information stored in the navigation device 421. And display. This makes it possible for the user to intuitively grasp a point where a video data transmission request can be made.

[0098] When displaying point information on a map, a change in the current position of the vehicle 410 that has transmitted the point information may be displayed in a route on the route. For example, the current location information is periodically received from the transmission source until the access deadline, and the route on the map is filled based on the received information. As a result, it is possible to more accurately grasp which point the video data transmitted from the point information transmission source is.

Furthermore, 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. As a result, the user can display only the point information on the route on which the vehicle travels and can obtain video data of the current situation.

[0100] As described above, according to the data transmission / reception system 400 according to the embodiment, in the communication network having a plurality of communication terminals capable of communicating with each other, the current position acquired by the vehicle 410 is related. Data is transmitted to other communication terminals including other vehicles 420. At that time, depending on the video data transmission request notification, the video data acquisition location, acquisition date, etc. By distributing, it is possible to make a passenger of another vehicle 420 more accurately determine whether or not to request transmission of video data.

[0101] Further, all the travel routes of vehicle 410 are photographed, and only the portions desired by the passenger of vehicle 420 are cut out and transmitted. For this reason, it is possible to increase the possibility that the video data required by the passenger of the vehicle 420 exists as compared with the case where the video of only the current position of the vehicle 410 is transmitted.

[0102] Further, 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 information for determining whether or not the video data is necessary, it is possible to appropriately determine the video data that the user needs from a huge amount of information on the network.

[0103] In the above-described embodiment, 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, a passenger of a vehicle 410 uploads video data that the passenger wants to transmit to the server, and at the same time, a data transmission request notification is distributed from Sano to another vehicle 420. The passenger of another vehicle 420 that has received the video data transmission request notification accesses the server or downloads the necessary video data every time the video data is used or periodically. Alternatively, a data transmission request may be made to the server.

[0104] 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. In addition, since the data is not directly transmitted and received, it is possible to protect personal information where the communication addresses of the vehicles 410 and 420 cannot be known to each other.

Note that the data transmission method and data reception method described in the present 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, or a DVD, and is executed by being read by the computer. This program is distributed via networks such as the Internet. It can be a transmission medium that can be used.

Claims

The scope of the claims

[1] A communication terminal in a communication network that has multiple communication terminals that can communicate with each other.

An acquisition means for acquiring video data captured from the position of the communication terminal, a transmission request signal for the video data acquired by the acquisition means, and a point designated by another communication terminal other than the communication terminal (hereinafter referred to as the communication terminal). , A signal relating to “designated point”) from the other communication terminal;

When a transmission request signal is received by the receiving unit, an extracting unit that extracts video data corresponding to the designated point from the video data;

Transmitting means for transmitting the video data extracted by the extracting means to a communication terminal that has transmitted the transmission request signal;

A communication terminal comprising:

[2] A communication terminal in a communication network that has multiple communication terminals that can communicate with each other.

Acquisition means for acquiring video data imaged from the position of the communication terminal; transmission request signal for video data acquired by the acquisition means; and a time (hereinafter referred to as a communication terminal other than the communication terminal) , A signal relating to “designated time”) from the other communication terminal;

When a transmission request signal is received by the receiving means, extracting means for extracting video data corresponding to the specified time from the video data;

A communication terminal comprising:

[3] A communication terminal in a communication network that has multiple communication terminals that can communicate with each other.

Acquisition means for acquiring video data captured from a position of the movable communication terminal;

The transmission request signal of the video data acquired by the acquisition means and the communication terminal Receiving means for receiving from the other communication terminal a signal relating to a moving speed designated by another other communication terminal (hereinafter referred to as “designated speed”);

When a transmission request signal is received by the receiving means, an extracting means for extracting video data when the communication terminal is at the specified speed from the video data, and video data extracted by the extracting means, Transmitting means for transmitting to the communication terminal that transmitted the transmission request signal;

A communication terminal comprising:

[4] A communication terminal in a communication network that has multiple communication terminals capable of communicating with each other.

A designation means for accepting designation of an arbitrary point;

A transmission request signal for video data captured from a position of a communication terminal other than the communication terminal, and a signal related to a point designated by the designation unit (hereinafter referred to as “designated point”) are used as the other communication terminal. A transmission means for transmitting to

Receiving means for receiving, from the other communication terminal, video data corresponding to the designated point of the video data as a result of transmission of the signal by the transmitting means;

A communication terminal comprising:

[5] A communication terminal in a communication network that has multiple communication terminals capable of communicating with each other.

A designation means for accepting designation of an arbitrary time;

A transmission request signal for video data captured from a position of a communication terminal other than the communication terminal, and a signal related to a time designated by the designation means (hereinafter referred to as “designated time”) are used as the other communication terminal. A transmission means for transmitting to

Receiving means for receiving, from the other communication terminal, video data corresponding to the specified time among the video data as a result of transmission of the signal by the transmitting means;

A communication terminal comprising:

[6] A communication terminal in a communication network that has multiple communication terminals capable of communicating with each other.

A designated hand that accepts designation of an arbitrary moving speed of a communication terminal other than the communication terminal Step and

A transmission request signal of video data captured from the position of the other communication terminal and a signal related to a moving speed (hereinafter referred to as “specified speed”) specified by the specifying means are transmitted to the other communication terminal. Sending means to

Receiving means for receiving, from the other communication terminal, video data of the video data when the other communication terminal is at the specified speed as a result of transmission of the signal by the transmission means;

A communication terminal comprising:

[7] A data transmission method using a communication terminal in a communication network having a plurality of communication terminals capable of mutual communication.

Positional force of the communication terminal An acquisition step of acquiring the imaged video data, a transmission request signal of the video data acquired by the acquisition step, and a point designated by a communication terminal other than the communication terminal (hereinafter referred to as the communication terminal) , A signal related to “designated point”) from the other communication terminal;

When a transmission request signal is received by the reception step, an extraction step of extracting video data corresponding to the designated point from the video data;

A transmission step of transmitting the video data extracted by the extraction step to a communication terminal that has transmitted the transmission request signal;

A data transmission method comprising:

[8] A data reception method using a communication terminal in a communication network having a plurality of communication terminals capable of communicating with each other,

A designation process that accepts designation of an arbitrary point;

A transmission request signal for video data captured from a position of a communication terminal other than the communication terminal, and a signal related to a point designated by the designation step (hereinafter referred to as “designated point”) are used as the other communication terminal. Sending process to send to,

As a result of the transmission of the signal by the transmission step, a reception step of receiving the video data corresponding to the designated point out of the video data by the other communication terminal;

A data receiving method comprising:

[9] A data transmission program causing a computer to execute the data transmission method according to claim 7.

[10] A data reception program causing a computer to execute the data reception method according to claim 8.

[11] A computer-readable recording medium on which the data transmission program according to claim 9 is recorded.

[12] A computer-readable recording medium recording the data receiving program according to claim 10.