JP2010109485A - In-vehicle device, and method for reproducing content - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reproduce a distributed content with more suitable acoustic setting. <P>SOLUTION: An in-vehicle device for receiving the distribution of a content from a road side apparatus and reproducing the content includes a set changing means (step S4) which, if the content includes a multimedia content with acoustic data or the like when reproducing the content, changes a predetermined set value concerned with the acoustic data or the like of a reproduced sound to a predetermined value. The in-vehicle device includes also an attribute correspondence value storage means for storing a value of the predetermined set value corresponding to the contents of predetermined attribute information allowed to accompany the multimedia content as an attribute correspondence value. When the content includes the multimedia content, and when the attribute information accompanies the multimedia content and the attribute correspondence value corresponding to the contents of the attribute information exists in a set value storage means, the predetermined set value is changed based on the attribute correspondence value, upon the reproduction of the content (step S4). <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an in-vehicle device that receives content distribution from a roadside device, and a content reproduction method in the in-vehicle device.

  In recent years, information providing services using DSRC (Dedicated Short Range Communication) as communication media have been proposed. In this information provision service, content configured according to a predetermined data format for the ITS OBE specified in the ITS OBE standard published by the Japan Electronics and Information Technology Industries Association is the roadside corresponding to the DSRC system. Delivered via the machine.

  Conventionally, the vehicle-mounted device can perform narrow area wireless communication with a roadside wireless device installed on the road using DSRC or the like, and can receive information from the center device via the roadside wireless device. . That is, bidirectional communication between the vehicle-mounted device of the vehicle and the roadside wireless device is possible only while the vehicle is within the communication range of the roadside wireless device. (Information on stores and medical institutions) and advertising information.

  Further, in the vehicle-mounted device, by storing various content information distributed from the roadside wireless device, it is possible to reproduce the various content information even in an environment where communication with the roadside wireless device is not possible (Patent Document 1). reference). In the conventional vehicle-mounted device, all distributed contents are reproduced under the same sound settings.

  In Patent Document 1, as a technique related to DSRC, a driver can set a method for storing information received from a roadside machine, thereby driving a desired one of received information. The technology regarding the vehicle-mounted device which the person can confirm again later is described.

JP 2007-109032 A

  However, according to the above-described conventional ITS in-vehicle device, since all contents such as voice guidance and music are reproduced with the same sound setting, each content cannot be viewed with the sound setting suitable for the contents. There is a problem. Also, music and video content cannot be viewed with sound settings suitable for the artist or genre.

  If the user wants to view again information such as music or video that the user has received and viewed in the past, the user navigates to the target content by following the hierarchical structure while pressing the transition button 142 in FIG. The operation is complicated.

  In addition, since some contents are protected by copyright issues, use of the contents may be limited.

  In view of the problems of the related art, an object of the present invention is to enable the ITS in-vehicle device to reproduce the distributed content with a more appropriate sound setting.

  In order to achieve this object, an in-vehicle device according to a first aspect of the present invention is an in-vehicle device that receives content distribution from a roadside device and reproduces the content, and when reproducing the received content, In the case where the content includes predetermined multimedia content accompanied by sound, moving image, or image, setting changing means is provided for changing a predetermined setting value related to the sound of reproduced sound or the quality of moving image or image to be reproduced to a predetermined value. It is characterized by that.

  The on-vehicle device according to a second aspect of the invention relates to the first aspect of the invention, wherein the predetermined set value associated with the content of the predetermined attribute information that can accompany the multimedia content is stored as an attribute corresponding value. A corresponding value storage unit, and the setting change unit includes the multimedia content when the received content is played back, and the attribute information is attached to the multimedia content. When the attribute corresponding value associated with the content of the attribute information exists in the set value storage means, the predetermined set value is changed based on the attribute corresponding value. And

  The in-vehicle device according to a third aspect of the present invention is the in-vehicle apparatus according to the second aspect of the present invention, based on the content that has been distributed, an extraction unit that extracts a file of multimedia content included therein, and a file extracted by the extraction unit. Is stored in a predetermined storage area after performing necessary authentication if it is protected by a digital rights management system or if it is not protected .

  The on-vehicle device according to a fourth invention is characterized in that, in the third invention, the storage area is a storage area in the apparatus or a storage area outside the apparatus connectable to the apparatus.

  The on-vehicle apparatus according to a fifth invention is characterized in that, in the third or fourth invention, the file storage means performs the storage of the file when receiving an instruction from the user to perform the storage. And

  In the in-vehicle device according to a sixth aspect of the invention, in any one of the third to fifth aspects of the invention, extraction of a file based on the delivered content and storage of the file by the file storage means It is performed when a distribution is received or when the content is reproduced.

  In the in-vehicle device according to a seventh aspect of the present invention, in any one of the second to sixth aspects, the predetermined attribute information is an artist name, a song name, or a genre name, and the predetermined set value is an equalizer value. It is characterized by being.

  A content playback method according to an eighth aspect of the present invention is a content playback method in an in-vehicle device that receives content distribution from a roadside device and plays back the content, and when the content received is played back, In the case of including predetermined multimedia content accompanied by sound, moving image, or image, a setting changing step of changing a predetermined setting value related to the sound of reproduction sound or the quality of moving image or image to be reproduced to a predetermined value is provided. Features.

  According to the present invention, it is possible to reproduce the delivered content with a more appropriate sound setting, or a moving image or image quality.

  FIG. 1 is a schematic diagram of a road-to-vehicle DSRC system 10 according to an embodiment of the present invention. The road-to-vehicle DSRC system 10 is used for an information providing service by a town car life navigation, and in the service, data in a town car life navigation multi-content format is used. The roadside machine 11 constitutes a roadside device 15 together with the server 12, and is connected to the server 12 by wire or wirelessly. Further, the server 12 can exchange data with another server via a network such as the Internet. The roadside device 11 transmits / receives data to / from the ITS vehicle-mounted device 17 mounted on the automobile 13 existing in an area having a diameter of approximately several meters to 30 meters using radio waves of 5.8 GHz band. The ITS vehicle-mounted device 17 includes a DSRC unit 18 and a navigation unit 19.

  FIG. 2 is an explanatory diagram of a data transmission mode. In the downlink of the multi-content format, data is classified according to its type, and ID codes (major category IDs) “00”, “01”, “02”,. In multi-content format data transmission, data is grouped in units of information groups, and each information group has classification data having an ID code “00” (hereinafter referred to as “ID = 00”) at the head. The classification data of ID = 00 is configuration information indicating what kind of ID is included in the information group.

  FIG. 3 is a diagram showing whether each ID is essential or optional for the configuration of the information group. ID = 0, 1, and 2 must be included in each information group. ID = 3, 4, and 5 do not need to be included in the information group when providing information only with ID = 60, but must be included in the information group when providing other information. Whether or not other IDs are included in the information group is arbitrary.

  4 to 7 are classification tables assigned to each ID used in the downlink. ID = 00 is a classification of configuration ID information (an area describing what ID each information group stores). ID = 01 is a classification of a business operator, a service business code (a business code that can identify a service business), a service business display text (a service business name (service name) text information for navigation display), And a service provider phonetic character string (service company name (service name) phonetic character string information for navigation utterance).

  ID = 02 is a content classification, and is a company code (a code that can identify the information provider of the content), a company display text (information providing company name text information for navigation display), a company phonetic character string (for navigation utterances) Information providing company name phonetic character string information), information code (information code that can identify the content), information display text (content content text information for navigation display), information phonetic character string (content content phonetic character string information for navigation utterances) ), And a preference data category (category code indicating an information category to which the information corresponds).

  Similar to ID = 02, ID = 03 is a content classification, and an immediate playback / storage code (a code representing a content playback operation after reception) and a playback condition code (content playback conditions in the information provision area) Code).

  ID = 04 is a classification of an expiration date, and includes a start year / month / day / hour / minute / second (content expiration date) and an end year / month / day / hour / minute / second (content expiration date). ID = 05 is a classification of provision time, and includes business hours (business hours of content provider) and information provision time (content provision time).

  ID = 10 is the classification of the target point, the target point coordinates (latitude and longitude information of the point where the service can be provided), the target point display text (service name (store name, etc.)), partner parking information (target Partner parking lot information other than location), icon display image data (icon data representing a place where service can be provided), display character data (text information for service description), display image data (still image information representing service) , Phonetic character string data (phonetic character string information indicating service), compressed voice data (compressed voice data information), voice playback order (representing the playback order of phonetic string and compressed voice), video data (video data) Information) and a URL (URL information representing a service).

  ID = 20 is a classification of information provision points. For a total of five information provision points, information provision center coordinates (latitude and longitude information for reproducing pop-up information) and information provision areas (areas for reproducing pop-up information) are provided. Radius information from central coordinates to be defined), information provision direction code (information provision direction information for reproducing pop-up information), information provision road type (road type information for reproducing pop-up information), display image data (still image for pop-up reproduction) Data), phonetic character string data (phonetic character string information for pop-up playback, compressed voice data for compressed voice data for pop-up playback), and voice playback order (a code representing the playback order of voice data for pop-up playback). .

  ID = 30 is a category of transition information, and includes a total of eight next reproduction information codes (screen transition information). ID = 40 is a classification of detailed information, and for each of the total 8 pieces of detailed information, display character data (navigation display detailed information text information) and utterance phonetic character string (navigation utterance detailed information) Phonetic character string information).

  ID = 50 is a classification of parking lot information, and for each of up to 15 parking lots, a parking lot ID (ID that can identify the parking lot), detailed information (dynamic detailed information on parking lot), and special notes (Special notes for parking lots).

  ID = 51 can update the static information of the parking lot stored in the navigation unit 19 for a maximum of 4 meshes in units of tertiary meshes. ID = 51 is the number of tertiary meshes (notifying the number of tertiary meshes including updated parking lot static information), and the tertiary mesh code (updating parking lot static information for each mesh of 1-4). 3rd mesh code included), 3rd mesh version information (3rd mesh version information including updated parking lot static information), 3rd mesh parking number (number of parking static information included in updated mesh) Includes tertiary mesh parking lot static information (static information of parking lot to be updated).

  ID = 60 is a classification of driving assistance, driving assistance image data (driving assistance image information), driving assistance phonetic character string (data driving assistance phonetic character string information), driving assistance compressed voice (data driving assistance compressed voice) Information) and voice playback order (representing the playback order of the phonetic character string and the compressed voice).

ID = 80 is a classification of preference data. For a total of 127 tables of preference data, preference data version (version information of preference data table), preference data table (
Preference data table display text information), phonetic character string (utterance phonetic character string information in preference data table), and detailed information (preference data table detailed information).

  FIG. 8 shows communication and processing between the devices performed in the transaction between the roadside device 15 and the ITS vehicle-mounted device 17. The roadside machine 11 and the server 12 constitute a roadside apparatus 15. The ITS vehicle-mounted device 17 includes a DSRC unit 18 and a navigation unit 19. Explain in chronological order. Communication between the roadside device 11 and the DSRC unit 18 is performed by DSRC radio waves, and communication between the roadside device 11 and the server 12 and between the DSRC unit 18 and the navigation unit 19 is usually performed by a cable.

  As the ITS vehicle-mounted device 17 is turned on, client information data is written from the navigation unit 19 to the DSRC unit 18 in S10. As the automobile 13 equipped with the ITS vehicle-mounted device 17 enters (area in) a radio wave arrival area within a communicable distance (eg, about 30 m) with the roadside device 11, in S11, the roadside device 11-DSRC unit 18 DSRC connection processing is performed between the two.

  When the DSRC connection process in S11 is completed, a DSRC connection notification is made in S12 and S13. The connection notification in S12 is from the roadside device 11 to the server 12, and the connection notification in S13 is from the DSRC unit 18 to the navigation unit 19. In S <b> 14, client information is notified from the DSRC unit 18 to the server 12 via the roadside device 11.

  The server 12 determines whether the user of the ITS vehicle-mounted device 17 is a member or a non-member based on the client information notification from the DSRC unit 18, and the hardware of the ITS vehicle-mounted device 17 for appropriately reproducing the content by the ITS vehicle-mounted device 17. Know the wear information. In S <b> 18, content such as a Welcom screen is transmitted from the server 12 to the navigation unit 19 via the roadside device 11 and the DSRC unit 18. The content is organized in a multi-content format. The navigation unit 19 determines a service provider from the multi-content format.

  After S18, the server 12 periodically polls the DSRC unit 18 in S19 until the navigation unit 19 writes the uplink information in the DSRC unit 18. In S20, the navigation unit 19 writes the uplink information to the DSRC unit 18 if it is a member of the service provider, but does nothing if it is not a member.

  In S <b> 24, the server 12 sends default content (e.g., a welcome screen) to the navigation unit 19 via the roadside device 11 and the DSRC unit 18. In S <b> 29, the server 12 performs memory access polling for the DSRC unit 18. On the other hand, in S30, if the user is a member, the DSRC unit 18 notifies the server 12 of uplink information.

  In S33, the server 12 organizes the storage-type content suitable for the member preference based on the member information acquired from the uplink information in the multi-content format (FIG. 2) and distributes it to the ITS in-vehicle device 17. As will be described later, the roadside device 15 interrupts the distribution of the accumulation type content one or more times during the period of S33 and interrupts the distribution of the immediate reproduction type content. In S34, the end of distribution of the storage type content is notified. The automobile 13 equipped with the ITS vehicle-mounted device 17 leaves the communication area with the roadside device 11 with the end of distribution.

  FIG. 9 is a data explanatory diagram of uplink information sent from the ITS vehicle-mounted device 17 to the roadside device 15. Uplink information is sent in multiple tags. The tag 1 includes a service provider code, a destination (latitude and longitude), a waypoint (latitude and longitude) 1 to 5, a cumulative travel distance, a preference genre data version, preference genre data, and member information 1 to 8. The tag 2 includes a service provider code and past stopover locations (latitude and longitude) 1 to 41. The tag 3 includes a service provider code and past stopover places (latitude and longitude) 42 to 82.

  The tag 4 includes a service provider code and reception / reproduction history (reception information code and reproduction identification flag) 1 to 123. The tag 5 includes a service provider code and reception / reproduction history (reception information code and reproduction identification flag) 124 to 246.

  FIG. 10 is an explanatory diagram showing an example of preference data with ID = 80 as a table. The preference data includes a preference data number, preference data display text, preference data display nest, preference data target identifier, preference data default value, and phonogram string. There are a total of 128 preference data numbers ranging from 0 to 127, and the service provider can freely set items for each data number. Of the 128 items, a maximum of 96 items are notified as uplink information from the ITS in-vehicle device 17 to the roadside device 15 in S30 (FIG. 4).

  Of the 96 items notified as uplink information, 12 items are used for public information providing service purposes and are information items distributed by default when providing information in DSRC communication. In the preference data table of FIG. 10, the display nest means a hierarchy of each item (corresponding to the data number of FIG. 10), and a larger numerical value means a lower hierarchy. The target identifier means that an item whose value is “0” is not a check target in the preference data check screen (FIG. 11 described later) in the navigation unit 19, and is “1”. This means that the item is a check target on the check screen. The default value means that an item with “0” is displayed on the initial screen with no check, and an item with “1” is displayed on the initial screen with check. It means to display with check.

  FIG. 11 is an example of a check screen that the ITS vehicle-mounted device 17 that has received the preference data from the roadside device 15 displays on the display unit of the navigation unit 19. The user can scroll the screen up and down by dragging the scroll bar 23. In FIG. 11, when the user clicks the on button, the check is added, and when the user clicks the off button, the check is removed. In each item, it means that the user has selected one of “ON” and “OFF” whose italic font is italic. Items for which the default value of the received preference data is “0” (eg, bargain information and coupon information in FIG. 10) are off (unchecked), and the default value of the received preference data is “1”. The item (example: parking lot information in FIG. 10) is on (checked).

  FIG. 12 is a block diagram showing the configuration of the roadside machine 11. As shown in the figure, the roadside machine 11 performs necessary processing, a control unit 111 that controls each part of the roadside machine 11, a ROM 112 that stores programs executed by the control unit 111, a RAM 113 that is used by the control unit 111, A storage device 114 used as an auxiliary storage device by the control unit 111, a wireless communication unit 115 for the control unit 111 to perform DSRC communication with the ITS in-vehicle device 17, and an ITS communication with the server 12 by the control unit 111 A communication control unit 116 for performing communication via the network (intelligent transportation system communication network) 20 is provided.

  FIG. 13 is a block diagram showing a configuration of the ITS vehicle-mounted device 17. As shown in the figure, the ITS vehicle-mounted device 17 performs necessary processing, a control unit 171 that controls each unit of the ITS vehicle-mounted device 17, a ROM 172 that stores programs executed by the control unit 171, and the control unit 171 perform processing. The RAM 173 used in the process, the storage device 174 used by the control unit 171 as an auxiliary storage device, the communication unit 175 for the control unit 171 to perform wireless communication, and the operation unit 176 for giving an instruction to the control unit 171 by an operation input. A display unit 177 for displaying information to be notified to the user by the control unit 171; a microphone 178 for the user to give an instruction to the control unit 171 by voice input; and a control unit 171 by voice output to the user. The speaker 179, the microphone 178 and the speaker 179 for notifying information are interposed between the control unit 171 and the voice recognition. Comprising an audio processing unit 180 performs processing such as speech synthesis, as well as a control unit 171, interposed between the sensor group 181, the output device 182 to pass the output from the sensor group 181 to the control unit 171.

  The communication unit 175 includes a GPS module 175 a that receives a radio wave transmitted from a GPS satellite, executes positioning calculation, and outputs positioning information, and a DSRC module for performing DSRC communication with the roadside device 111. The sensor group 181 includes a vehicle speed sensor, a gyro sensor, a parking sensor, and the like. The control unit 171 refers to the map database stored in the storage device 174, and also performs a navigation function based on information from the GPS module 175a and the sensor group 181.

  FIG. 14 shows the format of the item presence / absence information included in the “target point information” (ID = 10) of the content received by the ITS onboard device 17. This item presence / absence information is information indicating the presence / absence of setting for each item that can be set in the “target point information”. As shown in the figure, “target location information” includes “partner parking lot”, “URL”, “video”, “compressed voice”, “phonetic character string”, “display image”, “display character”. ”,“ Target point ”, and“ icon ”can be set, and the item presence / absence information represents the presence / absence of setting for these items. That is, for each data, if the “presence / absence flag” is “0”, that data is not set, and if it is “1”, it is set.

  When the “presence flag” (hereinafter referred to as “multimedia flag”) for the item “multimedia” is “1”, it means that the “target point information” includes a multimedia file. However, only in the case of ID = 10, when the multimedia flag is “1”, “display image” is a jacket photo of a music CD, “compressed sound” is the music, and “display character” is Indicates artist name and song name. Alternatively, “display image” is a thumbnail of “video”, “video” is a moving image such as PV (promotion video), and “display characters” indicate an artist name and a song name. In this case, the multimedia file includes an image file composed of "display image" data, an audio file composed of "compressed audio" data, and a video file composed of "video" data. Applicable.

  The data format of “display image” corresponds to JPG, GIF, PNG, and BMP. The data format of “compressed audio” corresponds to IMA-ADPCM, MP3, AAC, CELP, and PCM. As a data format of “video”, MPEG-4, WMV, MOV, and Flash are applicable.

  The storage device 174 of the ITS vehicle-mounted device 17 stores a value of a setting value that affects the sound of the reproduced sound that is associated with the content of the predetermined attribute information that can be possessed by such multimedia content with sound. Has been. Examples of the multimedia content accompanied by sound include content constituted by the above-mentioned “display image” and “compressed audio” data and content constituted by “video” data. As the predetermined attribute information, for example, an artist name, a song name, and a genre name are applicable. For example, an equalizer value or a reverb value corresponds to the set value that affects the sound of the reproduced sound. In the ITS in-vehicle device 17, when the multimedia flag of the received content is “1”, the sound setting corresponding to the artist name, the song name, and the genre related to the content is performed when the content is reproduced. Is used.

  The ITS in-vehicle device 17 also extracts and stores a multimedia file from the content data when receiving the content distribution by the downlink or playing the distributed content. It can be played back by application software for content playback.

  FIG. 15 shows an example of a content screen displayed on the display unit 177 of the ITS vehicle-mounted device 17. 141 is a portion displayed based on “display image data” in “target point information” (ID = 10) of the content, 142 is “next” in “transition information” (ID = 30) of the content. This is a transition button generated based on “reproduction information code 1” to “next reproduction information code 8”. Up to eight “information codes” (ID = 02) of contents that can be reproduced next to the content can be set in “next reproduction information code 1” to “next reproduction information code 8”. That is, since content exists for each “information code”, the content to be reproduced next is also specified by the “information code”. The number of “next playback information code 1” to “next playback information code 8” in which “information code” is set in the transition button 142 and the content specified by the “information code” exists in the storage device 174 Only the numbers “1”, “2”,... In the example of FIG. 14, since “information code” is set from “next reproduction information code 1” to “next reproduction information code 4” and the corresponding content exists, the numbers “1” to “4” are assigned. Four attached transition buttons 142 are displayed.

  “1. Living information”, “2. Store information”, “3. Roadside service”, and “4. Parking lot guidance” displayed in the display portion 141 are “1” to “1”, respectively. It shows an outline of the next content to be played when each transition button 142 with the number “4” is pressed. In other words, “display image data” (ID = 10) and “next reproduction information code 1” to “next reproduction information code 8” (in this way, so that the display content of the display portion 141 and each transition button 142 correspond to each other in this way. ID = 30) is set in the content.

  When any of the transition buttons 142 is pressed, the ITS vehicle-mounted device 17 has the same “setting content” as one of “next playback information code 1” to “next playback information code 4” corresponding to the transition button 142. The content having “information code” (ID = 02) is searched and the content is reproduced. That is, if “display image data” and “transition information” (ID = 30) in the target point information (ID = 10) of the searched content are set, the screen transitions to a screen based on these setting contents. In this way, each content can be reproduced while sequentially changing the content screen in accordance with the setting content of the transition information (ID = 30). At this time, if the multimedia flag of the content to be reproduced is “1”, a musical sound is reproduced based on “compressed audio data” (ID = 10), or based on “video data” (ID = 10). The video will be played.

  FIG. 16 is a flowchart showing content reproduction processing in the ITS on-vehicle device 17. In this processing, as described above, the sound setting corresponding to the artist name or the like is used. When the process starts, the ITS vehicle-mounted device 17 first determines whether or not the multimedia flag in the item presence / absence information of the “target point information” (ID = 10) of the content to be reproduced is “1” in step S1. . If it is determined that it is “1”, “display character data” in “target point information” (ID = 10) is extracted in step S2.

  Next, in step S3, it is determined whether or not an equalizer setting associated with the artist name in the “display character data” is registered. Such equalizer setting registration is performed in advance based on a user instruction. If it is determined that the equalizer setting is registered, in step S4, the equalizer setting in the ITS vehicle-mounted device 17 is changed to be the equalizer setting, and the process proceeds to step S7. If it is determined that it is not registered, in step S5, genre information is included in the tag information of the file composed of “compressed audio data” or “video data” in “target point information” (ID = 10). Determine if it exists. If it is determined that the genre information does not exist, the process proceeds to step S7. If it is determined that it exists, it is determined in step S4 whether or not the equalizer setting associated with the genre information is registered. Such equalizer setting registration is performed in advance based on a user instruction. If it is determined that the equalizer setting is registered, the equalizer setting of the ITS vehicle-mounted device 17 is changed so as to be the equalizer setting in step S4, and the process proceeds to step S7.

  In step S7, the content reproduction process is started. Next, in step S8, the process waits for the reproduction of the content to end. When the reproduction is finished, the equalizer setting is returned to the original in step S9, and the process of FIG. 16 is finished.

  On the other hand, if it is determined in step S1 that the multimedia flag is not “1”, the process proceeds to step S10, and the reproduction process of the content is started. Next, in step S11, the process waits for the reproduction of the content to end. When the reproduction is finished, the processing in FIG. 16 is finished.

  According to the present embodiment, when the multimedia flag is “1” when reproducing the content, the equalizer setting associated with the artist indicated by “character data for display”, or “compressed audio data” or “video” is set. Since the equalizer setting associated with the genre information in the tag information of the file composed of “data” is applied for reproduction, reproduction can be performed with the equalizer setting suitable for the reproduction content.

  FIG. 17 is a flowchart showing processing when receiving distribution of content in the ITS in-vehicle device 17. In this process, as described above, the multimedia file is extracted from the distributed content as a file in a format reproducible by general application software and stored. When the process is started, the ITS vehicle-mounted device 17 first waits for completion of the downlink for receiving the content in step S21. When the end of the downlink is detected, in step S22, it is determined whether or not the multimedia flag of “item presence / absence information” in “target point information” (ID = 10) of the content is “1”. If it is determined that it is not “1”, the processing in FIG. 17 ends.

  If it is determined that the multimedia flag is “1”, the process proceeds to step S23, and a multimedia file is extracted from “target point information” (ID = 10) of the content. The multimedia file is extracted based on “display image data”, “compressed audio data”, and “video data”. The extracted multimedia file has a file format such as JPG, MP3, MPEG-4, etc., and can be reproduced by general application software. Next, in step S24, copyright copy information is extracted, and necessary authentication is performed depending on whether or not the file is protected by a DRM (digital copyright management) system. Next, in step S25, the extracted multimedia file is stored in the file management area in the storage device 174, and the processing in FIG.

  According to this, when it is desired to play music or a video included in the content that has been received and stored in the past, the transition button as illustrated in FIG. 15 is determined by the service provider that distributes the content. It is possible to directly search and play multimedia files of music or videos to be played from the file management area by using general application software installed in the ITS on-board device 17 without having to follow the hierarchical structure constructed through the above. . In addition, management and playback operations of music and moving images can be facilitated by rearranging and displaying multimedia files stored in the file management area.

  FIG. 18 is a flowchart showing a process when reproducing the content held in the ITS on-vehicle device 17. In the processing of FIG. 17 described above, when content distribution is received through the downlink, the processing is performed on the content. In the processing of FIG. 18, instead of pressing the transition button 142 in FIG. When the content instructed by is reproduced, the same processing is performed for the content.

  That is, when the process is started, the ITS vehicle-mounted device 17 first reproduces the instructed content in step S31. Thereafter, in step S32 to S35, when the multimedia flag is “1” in steps S32 to S35, the multimedia file is extracted and necessary authentication is performed. Thereafter, the file is stored in the file management area, and the process of FIG. Also by this, the same effect as in the case of the processing of FIG. 18 can be obtained.

  FIG. 19 is a flowchart according to a modification of the process of FIG. In the processing of FIG. 17, the extracted multimedia file is stored in the file management area of the storage device 174. Instead, in the processing of FIG. 19, the extracted multimedia file is stored outside the device such as a USB memory. Save to the area. The other points are the same as in the case of the processing in FIG.

  That is, when the process is started, the ITS vehicle-mounted device 17 first waits in step S41 for completion of the downlink for receiving the content. When the end of the downlink is detected, it is determined in step S42 whether or not an external storage area is connected to the ITS in-vehicle device 17. If it is determined that the connection is not established, the processing in FIG. 19 is terminated. If it is determined that it is connected, the process proceeds to step S43, and it is determined whether or not the multimedia flag of “item presence / absence information” in “target point information” (ID = 10) of the content is “1”. If it is determined that it is not “1”, the processing in FIG. 19 is terminated.

  If it is determined that the multimedia flag is “1”, the multimedia file is extracted from the content in steps S44 and 45 in the same manner as in steps S23 and S24 of FIG. 17, and necessary authentication is performed. . Next, in step S46, it is determined whether or not the multimedia file can be saved in a connected external storage area. If it is determined that it is possible, in step S47, the multimedia file is stored in an external storage area. If it is determined that the data cannot be stored, the processing in FIG. 19 ends.

  According to this, the same effect as in the case of the processing of FIG. Further, by connecting a USB memory or the like as an external storage area to another portable player or the like, a multimedia file stored in the USB memory or the like can be reproduced on another portable player or the like.

  FIG. 20 is a flowchart according to a modification of the process of FIG. In the process of FIG. 18, the extracted multimedia file is stored in the file management area of the storage device 174. Instead, in the process of FIG. 20, the extracted multimedia file is stored in a storage area outside the apparatus. I am doing so. The other points are the same as in the case of the processing in FIG.

  That is, when the process is started, the ITS vehicle-mounted device 17 first reproduces the instructed content in step S51. Thereafter, when the multimedia flag is “1” in steps S52 to S57 in the same manner as steps S42 to S45 in FIG. 19 for this content, the multimedia file is extracted and necessary authentication is performed. After the execution, the data is saved in an external storage area, and the processing in FIG. Also by this, the same effect as in the case of the process of FIG. 19 can be obtained.

  FIG. 21 is a flowchart according to another modification of the process of FIG. This process is obtained by adding a process for allowing the user to select whether or not to save the multimedia file to the process of FIG. That is, when the process is started, the ITS vehicle-mounted device 17 first waits in step S61 for completion of the downlink for receiving the content. When the end of the downlink is detected, it is determined in step S62 whether or not the multimedia flag of “item presence / absence information” in the “target point information” (ID = 10) of the content is “1”. If it is determined that it is not “1”, the processing in FIG. 21 is terminated.

  If it is determined that the multimedia flag is “1”, in steps S63 and S64, a multimedia file is extracted and necessary authentication is performed in the same manner as in steps 23 and S24 of FIG. Next, in step S65, an operation button for accepting an instruction operation for saving the multimedia file is displayed.

  FIG. 22 shows an example of a screen displaying this operation button. In the figure, 221 is a save button for instructing to save the multimedia file in the file management area, 222 is a return button for returning to the upper content screen, and 223 is “target point information” (ID = The character string 224 displayed based on the “display character data” in 10) is a still image displayed based on the “display image data” in the “target point information”. By pressing the save button 221, the user gives an instruction to save the multimedia file to the ITS in-vehicle device 17, and by pressing the return button 222, the upper content screen is saved without saving the multimedia file. An instruction to transition to can be given.

  Next, in step S66, the pressing of the save button 221 or the return button 222 is accepted to determine which button has been pressed. If it is determined that the save button 221 has been pressed, the process advances to step S67 to save the multimedia file in the file management area of the storage area 174, and the process of FIG. If it is determined that the return button 222 has been pressed, the processing in FIG. 21 is terminated. In this case, a transition is made to the upper content screen.

  According to this, the same effect as in the case of the process of FIG. 17 can be obtained. Further, the user can determine the multimedia file to be saved. Therefore, the multimedia files stored in the file management area are limited to those determined by the user, and the storage area in the file management area can be saved and the search can be speeded up.

  FIG. 23 is a flowchart according to another modification of the process of FIG. This process is obtained by adding a process for allowing the user to select whether or not to save the multimedia file in addition to the process of FIG. That is, when the process is started, the ITS vehicle-mounted device 17 first reproduces the instructed content in step S71. Thereafter, for this content, in steps S72 to S77, as in steps S62 to S67 of FIG. 21, when the multimedia flag is “1”, the multimedia file is extracted and necessary authentication is performed. After the execution, the file is stored in the file management area based on the user instruction, and the process of FIG. According to this, the same effect as in the case of FIG. 21 can be obtained.

  FIG. 24 is a flowchart according to a modification of the process of FIG. This process is obtained by adding a process for allowing the user to select whether or not to save the multimedia file to the process of FIG. That is, when the process is started, the ITS vehicle-mounted device 17 performs the same processes as steps S41 to S46 of FIG. 19 in steps S81 to S86. If it is determined in step S86 that the file can be saved, an operation button for accepting an instruction operation for saving the multimedia file is displayed in step S87.

  FIG. 25 shows an example of a screen displaying this operation button. In the figure, reference numeral 251 denotes a save button for instructing to save the multimedia file to the USB memory as an external storage area, reference numeral 252 denotes a return button for returning to the upper content screen, and reference numeral 253 denotes a “target point” of the content. A character string 254 displayed based on “display character data” in “information” (ID = 10) is a still image displayed based on “display image data” in the “target point information”. The user gives an instruction to save the multimedia file to the ITS in-vehicle device 17 by pressing the save button 251, and the upper content screen without saving the multimedia file by pressing the return button 252 An instruction to transition to can be given.

  Next, in step S88, the pressing of the save button 251 or the return button 252 is accepted to determine which button has been pressed. If it is determined that the save button 251 has been pressed, the process proceeds to step S89, the multimedia file is saved in the USB memory, and the process of FIG. If it is determined that the return button 252 has been pressed, the processing in FIG. 24 is terminated. In this case, a transition is made to the upper content screen.

  According to this, the same effect as in the case of the process of FIG. 19 can be obtained. Further, the user can determine the multimedia file to be saved. Therefore, it is possible to limit the multimedia files stored in the external storage area to those determined by the user, thereby saving the storage capacity in the external storage area and speeding up the search for the desired multimedia file. .

  FIG. 26 is a flowchart according to a modification of the process of FIG. This process is obtained by adding a process for allowing the user to select whether or not to save the multimedia file to the process of FIG. That is, when the process is started, the ITS vehicle-mounted device 17 first reproduces the instructed content in step S91. Thereafter, in steps S92 to S99, processing similar to that in steps S82 to S89 in FIG. 24 is performed. The process of FIG. 23 is terminated. According to this, the same effect as in the case of the process of FIG. 24 can be obtained.

  Note that the present invention is not limited to the above-described embodiment, and can be implemented with appropriate modifications. For example, in the above description, a multimedia file based on “display image data” in “target point information” (ID = 10), “compressed sound data, and“ video data ”is extracted. , “Information provision point 1” to “information provision point 5” (ID = 20) based on “compressed voice data” or the like may be extracted.

  Further, in the above description, when playing the content, when the content includes predetermined multimedia content accompanied by sound, the sound of the reproduced sound is set based on the setting value related to the sound of the reproduced sound corresponding to the attribute information attached to the content. However, instead of or in addition to this, when the content is accompanied by a moving image or an image, a predetermined setting value relating to the quality of the moving image or image corresponding to the attribute information associated with the content Based on the above, the settings relating to the quality of moving images or images to be reproduced may be changed. As the predetermined setting value relating to the quality of a moving image or image, for example, a setting value relating to contrast or resolution is applicable.

1 is a schematic diagram of a road-to-vehicle DSRC system according to an embodiment of the present invention. It is explanatory drawing of the data transmission aspect of a town car life navi multi-content format. It is a figure which shows whether each ID is essential or arbitrary about the structure of the information group in town car life navi multi-content data. It is a classification table which shows the content allocated to each ID of town car life navigation multi-content data. It is a figure which shows the continuation of the table | surface of FIG. It is a figure which shows the continuation of the table | surface of FIG. It is a figure which shows the continuation of the table | surface of FIG. It is a figure which shows the communication and process between each apparatus implemented by the transaction between a roadside apparatus and ITS onboard equipment. It is data explanatory drawing of the uplink information sent to a roadside apparatus from ITS onboard equipment. It is explanatory drawing which represented in table form an example of the preference data of ID = 80 in town car life navi multi-content data. It is a figure which shows an example of the screen of the check which the ITS onboard equipment which received preference data from the roadside apparatus displays on the display of a navigation part. It is a block diagram which shows the structure of the roadside machine in the system of FIG. It is a block diagram which shows the structure of the ITS onboard equipment in the system of FIG. It is a figure which shows the format of the item presence / absence information contained in "target point information" (ID = 10) in town car life navigation multi-content data. It is a figure which shows an example of the content screen displayed in the ITS onboard equipment of FIG. It is a flowchart which shows the content reproduction process in the ITS onboard equipment of FIG. It is a flowchart which shows the process at the time of receiving distribution of a content in the ITS onboard equipment of FIG. It is a flowchart which shows a process when reproducing | regenerating the content currently hold | maintained in the ITS onboard equipment of FIG. It is a flowchart which concerns on the modification of the process of FIG. It is a flowchart which concerns on the modification of the process of FIG. It is a flowchart which concerns on another modification of the process of FIG. It is a figure which shows an example of the screen containing the operation button displayed by the process of FIG. It is a flowchart which concerns on another modification of the process of FIG. It is a flowchart which concerns on the modification of the process of FIG. It is a figure which shows an example of the screen containing the operation button displayed by the process of FIG. It is a flowchart which concerns on the modification of the process of FIG.

Explanation of symbols

  10: Road-to-vehicle DSRC system, 11: Roadside machine, 12: Server, 13: Automobile, 17: ITS on-board unit, 18: DSRC unit, 19: Navigation unit, 20: ITS communication network, 23: Scroll bar, 111: Control Part, 112: ROM, 113: RAM, 114: storage device, 115: wireless communication part, 116: communication control part, 141: display part, 142: transition button, 151: transition button, 161: character string, 162: transition Buttons, 171: control unit, 172: ROM, 173: RAM, 174: storage device, 175: communication unit, 175a: GPS module, 175b: DSRC module, 176: operation unit, 177: display unit, 178: microphone, 179 : Speaker, 180: Audio processing unit, 181: Sensor group, 182: Input / output device, 221: Save button, 222: Return button , 223: string, 224: still images, 251: save button, 252: return button, 253: string, 254: a still image.

Claims (8)

An in-vehicle device that receives content distribution from a roadside device and reproduces the content,
When reproducing the delivered content, if the content includes a predetermined multimedia content with sound, video, or image, a predetermined setting value regarding the sound of the playback sound or the quality of the video or image to be played back A vehicle-mounted device comprising a setting changing means for changing the value to a predetermined value. Attribute correspondence value storage means for storing the value of the predetermined setting value associated with the content of predetermined attribute information that can accompany the multimedia content as an attribute correspondence value;
The setting change means, when playing back the content received, the content includes the multimedia content, the attribute information is attached to the multimedia content, and the content of the attribute information 2. The predetermined setting value is changed on the basis of the attribute corresponding value when an attribute corresponding value associated with is present in the set value storage means. In-vehicle device. Extraction means for extracting a file of the multimedia content included in the content based on the delivered content;
The file extracted by the extracting means is stored in a predetermined storage area after performing necessary authentication if it is protected by the digital rights management system or if it is not protected. The in-vehicle device according to claim 2, further comprising a file storage unit.   The in-vehicle apparatus according to claim 3, wherein the storage area is a storage area in the apparatus or a storage area outside the apparatus connectable to the apparatus.   The in-vehicle device according to claim 3 or 4, wherein the file storage unit performs the storage of the file when receiving an instruction from a user to perform the storage.   4. The extraction of a file based on the delivered content and the storage by the file storage unit of the file are performed when the delivery of the content is received or when the content is played back. The in-vehicle device according to any one of 5.   The in-vehicle device according to claim 2, wherein the predetermined attribute information is an artist name, a song name, or a genre name, and the predetermined setting value is an equalizer value. A content reproduction method in an in-vehicle device that receives content distribution from a roadside device and reproduces the content,
When reproducing the delivered content, if the content includes a predetermined multimedia content with sound, video, or image, a predetermined set value relating to the sound of the playback sound or the quality of the video or image to be played back A content reproduction method comprising a setting change step of changing the value to a predetermined value.

Images