JP2009199662A - Onboard unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an onboard unit enabling transition from a content screen under reproduction to a content screen capable of becoming a transition source. <P>SOLUTION: The onboard unit includes a communication section for radio communication with a center unit via a radio unit on the road side, a memory section for storing the content distributed from the center unit, a display section for displaying a reproduction screen of the content stored in the memory section, an operation section for transiting the reproduction screen, and a control section for performing display control of the content reproduction screen of the display section. The control section displays the reproduction screen of a first content (information group of a lower level class) on the display section, and also displays on the display section the reproduction screen of a second content (information group of a higher level class), capable of becoming the transition source of the first content. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an in-vehicle device capable of reproducing content distributed from a center device.

2. Description of the Related Art Conventionally, a road-to-vehicle communication system is known that includes a roadside wireless device installed on a road and an onboard device mounted on a vehicle, and performs bidirectional wireless communication between the roadside wireless device and the onboard device. In this road-to-vehicle communication system, for example, a narrow area communication system called DSRC (Dedicated Short Range Communication) is adopted.
The vehicle-mounted device performs narrow-area wireless communication with the roadside wireless device, and can receive information from the center device via the roadside wireless device. That is, bidirectional communication between the vehicle-mounted device and the roadside wireless device is possible only while the vehicle is within the communication range of the roadside wireless device, and content is distributed from the center device to the vehicle-mounted device through the roadside wireless device during this time. .

  As one of the usage forms of the road-to-vehicle communication system described above, content useful in a specific area around the roadside wireless device (for example, a store or a parking lot in the vicinity, from the center device (service provider) to the vehicle-mounted device) It is proposed that local information such as medical institutions, advertisements, etc.) be distributed. In addition, the content distributed from the center device is stored in the vehicle-mounted device, and even in an environment where the vehicle-mounted device cannot communicate with the roadside wireless device (outside the communication area), it is called by the user's operation or is automatically stored. There has been proposed a technique for playing back existing content (for example, Patent Document 1).

In addition, since the area information distributed from the center device includes a large number of contents, the on-vehicle device accesses and reproduces the desired contents using a hierarchical interface when reproducing the accumulated contents. It is being considered.
JP 2007-109032 A

In Patent Document 1, the in-vehicle device accumulates the content distributed from the center device so that the content can be reproduced even outside the communication area. However, a method for accessing the accumulated content is not disclosed. . For this reason, if a large number of extra contents such as advertisement information are stored in the vehicle-mounted device, it is considered that the desired contents cannot be easily accessed.
Also, in the method of accessing desired content using a hierarchical structure, it is possible to specify the transition destination content from the content being played back, but since there is no information to return to the transition source, the content is accessed. The operation for this is extremely complicated.

  An object of the present invention is to provide a vehicle-mounted device that enables a transition from a content screen being played to a content screen that can be a transition source.

In order to achieve the above object, the invention described in claim 1
A communication unit that performs wireless communication with the center device via the roadside wireless device;
A storage unit for storing content distributed from the center device;
A display unit for displaying a playback screen of content stored in the storage unit;
An operation unit for transitioning the playback screen;
A control unit that performs display control of a content playback screen in the display unit,
The control unit displays a reproduction screen of the first content on the display unit, and displays a reproduction screen of the second content that can be a transition source of the first content when an operation signal is input from the operation unit. It is characterized by being displayed on a display unit.

The invention according to claim 2 is the vehicle-mounted device according to claim 1,
When there are a plurality of second contents that can be a transition source for one first content,
The control unit selects one content prioritized according to a predetermined condition from the plurality of second contents, and sets the selected content as a transition source of the first content.

The invention according to claim 3 is the vehicle-mounted device according to claim 1,
When there are a plurality of second contents that can be a transition source for one first content,
A plurality of the operation units are provided corresponding to the plurality of second contents on the reproduction screen of the first contents,
The control unit displays a reproduction screen of the corresponding second content on the display unit when an operation signal is input from any of the plurality of operation units.

The invention according to claim 4 is the vehicle-mounted device according to claim 1,
When there are a plurality of second contents that can be a transition source for one first content,
The control unit displays a list of the plurality of second contents on the display unit when the operation signal is input from the operation unit on the reproduction screen of the first content, and is selected in the list A reproduction screen of the second content is displayed on the display unit.

The invention according to claim 5 is the vehicle-mounted device according to claim 4,
The control unit sets on a selection flag of the second content selected in the list,
When the operation signal is input from the operation unit on the first content reproduction screen, the second content reproduction screen in which the selection flag is set on is displayed on the display unit. .

The invention according to claim 6 is the vehicle-mounted device according to any one of claims 1 to 5,
The content includes a next playback information code indicating the content that is the transition destination of the content,
The control unit sets content that can be the transition source based on the next reproduction information code.

The invention according to claim 7 is the vehicle-mounted device according to claim 6,
When the reproduction transition from the second content to the first content (normal transition) is performed based on the next reproduction information code, the control unit uses the transition-source second content as the transition history of the first content. Set,
When the operation signal is input from the operation unit on the first content reproduction screen, the second content reproduction screen set in the transition history is displayed on the display unit.

  According to the vehicle-mounted device according to the present invention, it is possible to make a transition from a content screen being played back to a content screen that can be a transition source, and thus the convenience is greatly improved.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is an explanatory diagram showing a system configuration of a road-vehicle communication system 100 according to the present embodiment.
As shown in FIG. 1, the road-vehicle communication system 100 includes a center device 1, a roadside wireless device 2, and an on-vehicle device 5 mounted on a vehicle C. In FIG. 1, only one center apparatus 1 is shown, but the center apparatus 1 is provided for each service provider that provides content.

A plurality of roadside wireless devices 2 are installed on the road or in a parking lot, and each roadside wireless device 2 is connected to the center device 1 via a network N. The roadside apparatus 2 transmits and receives information to and from the vehicle-mounted device 5 by narrow area communication (DSRC).
That is, the center device 1 can provide content to the vehicle-mounted device 5 via the roadside device 2. Then, the vehicle-mounted device 5 performs a reproduction process on the provided content, and outputs sound based on the content from a speaker or displays a video on a display.

  FIG. 2 is a block diagram illustrating the internal configuration of the center device 1 and the roadside wireless device 2. That is, the center device 1 and the roadside wireless device 2 include a processing device (for example, a computer terminal) including the functional blocks shown in FIG.

As shown in FIG. 2, the center apparatus 1 includes a control unit 11, a network communication unit 12, and a content storage unit 13.
The control unit 11 includes a CPU 111, a ROM 112, and a RAM 113. The CPU 111 performs various calculations and controls the network communication unit 12 by executing a control program stored in the ROM 112 using the RAM 113 as a work area.

The network communication unit 12 performs processing according to a communication protocol such as TCP / IP and transmits content to the roadside apparatus 2 via the network N.
The content storage unit 13 is composed of, for example, a hard disk, and stores content to be provided to the vehicle-mounted device 5. This content is configured to include text information, image information, music information, etc. provided to the user. Examples of the content include various information such as store advertisements, parking lots, medical facility guidance, coupons, and the like. Can be mentioned. The content is configured according to a predetermined format (so-called composite content format) described later.

The roadside apparatus 2 includes a control unit 21, a DSRC communication unit 22, and a network communication unit 23.
The control unit 21 includes a CPU 211, a ROM 212, and a RAM 213. The CPU 211 controls the DSRC communication unit 22 and the network communication unit 23 in addition to performing various calculations by executing a control program stored in the ROM 212 using the RAM 213 as a work area.

The DSRC communication unit 22 transmits content to the vehicle-mounted device 5 mounted on the vehicle C by DSRC.
The network communication unit 23 performs processing according to a communication protocol such as TCP / IP, and receives content information and the like from the center device 1 via the network N.
When the roadside apparatus 2 receives the content transmitted from the center apparatus 1, the DSRC communication unit 22 constantly transmits a DSRC radio wave for providing the content. When the vehicle passes through a range (roadside area) in which communication with the roadside apparatus 2 is possible, the content is distributed to the vehicle-mounted device 5 mounted on the vehicle C.

FIG. 3 is an explanatory diagram of a roadside area Z that is a communicable range of the roadside apparatus 2.
As shown in FIG. 3, the roadside apparatus 2 radiates a DSRC radio wave having a limited reach from an antenna 2a installed on the side of the road or above the road, and forms a roadside area Z in the vicinity of the roadside apparatus. Here, DSRC is a narrow area communication method using radio waves of 5.8 GHz band, and the communication range is, for example, several meters to several tens of meters.

  In the road-to-vehicle communication system 100, a plurality of roadside radio devices 2 are installed, but since the outputs of the DSRC radio waves from the roadside radio devices 2 are all set to the same level, each of the plurality of roadside radio devices 2 forms. The roadside area is almost constant regardless of the setting location. And the roadside apparatus 2 can perform two-way radio communication (road-to-vehicle communication) only with the vehicle-mounted device 5 mounted on the vehicle C in each roadside area.

FIG. 4 is a block diagram illustrating a configuration example of the vehicle-mounted device 5 mounted on the vehicle C.
The vehicle-mounted device 5 is an ITS vehicle-mounted device that can be applied to ITS (Intelligent Transport Systems), and in the road-to-vehicle communication system 100, contents delivered from the center device 1 via the roadside wireless device 2 are stored. Receive, play and output.

  As shown in FIG. 4, the vehicle-mounted device 5 includes a control unit 51, a DSRC unit 52, a VICS module 53, and a car navigation unit 54.

  The control unit 51 includes a CPU 511, a ROM 512, and a RAM 513. The CPU 511 performs various calculations and executes centralized control of each unit by executing a control program stored in the ROM 512 using the RAM 513 as a work area.

  The DSRC unit 52 includes a DSRC control unit 521, a DSRC communication unit 522, a storage unit 523, an ETC processing unit 524, and an IC card interface 525, and communicates with the roadside apparatus 2 and the ETC base station by DSRC. Process.

The DSRC control unit 521 includes a CPU, a ROM, and a RAM (all not shown), and controls the operation of each unit of the DSRC unit 52 in cooperation with a control program stored in the ROM.
For example, when performing payment by ETC, the communication operation of the DSRC communication unit 522 is controlled to receive payment information from the ETC base station. Further, the ETC processing unit 524 causes the payment information to be written in an IC such as a credit card.
For example, when the content distributed from the center device 1 via the roadside wireless device 2 is received by the DSRC communication unit 522, the content is transferred to the control unit 51.

The DSRC communication unit 522 includes an antenna installed in the vicinity of the windshield on the dashboard of the vehicle C, and performs communication by DSRC with the roadside apparatus 2 and the ETC base station via this antenna.
The memory | storage part 523 is comprised with a non-volatile memory, for example, and memorize | stores the vehicle information etc. of the vehicle C which mounts the vehicle equipment ID numbered to the vehicle equipment 5 and the vehicle equipment 5 etc.
The vehicle-mounted device ID is vehicle-mounted device information assigned to each vehicle-mounted device at the time of manufacture. The vehicle information includes license plate information of the vehicle C on which the vehicle-mounted device 5 is mounted and vehicle type information (large vehicle, medium-sized vehicle, small vehicle, disabled driver, etc.), and when the vehicle-mounted device 5 is mounted on the vehicle C. Registered (setup).

The ETC processing unit 524 reads and writes payment information and the like with respect to a credit card with IC or a debit card inserted into and removed from the IC card interface 525.
The IC card interface 525 includes a slot such as a credit card, and mediates exchange of information between the IC such as a credit card inserted into the slot and the ETC processing unit 524.

  The VICS module 53 includes antennas for optical communication, FM communication, and 2.4 GHz radio wave communication, and performs optical communication, FM communication, and radio wave communication with a VICS (Vehicle Information and Communication System) center. Do. The VICS module 53 receives traffic jam information, road traffic information, and the like from the VICS center and transfers them to the control unit 51.

  The car navigation unit 54 includes a car navigation control unit 541, a current location detection unit 542, a map storage unit 543, an operation unit 544, an output unit 545, a storage unit 546, and a network communication unit 547. Processing to guide to

The car navigation control unit 541 moves from the current location of the vehicle C to the destination set via the operation unit 544 based on the current location information acquired from the current location detection unit 542 and the map information stored in the map storage unit 543. A guide route is calculated. Then, using the map information stored in the map storage unit 543, a map screen for guiding to the calculated guide route is created and displayed on the display of the output unit 545.
In addition, the car navigation control unit 541 functions as a playback unit that plays back the content distributed from the center device 1. Specifically, the car navigation control unit 541 performs display control and audio output control of the content reproduction screen on the display of the output unit 545 in cooperation with the control unit 51.

The current location detection unit 542 includes a GPS (Global Positioning System), a gyro sensor, and the like.
The GPS receives a GPS signal transmitted from a GPS satellite, and calculates its own vehicle position (latitude and longitude) based on the GPS signal.
The gyro sensor detects the acceleration of the car (rotational speed in the horizontal direction per unit time) indicating the amount of change in the moving direction (angular velocity sensor) and also detects the geomagnetism (azimuth sensor), and the absolute direction of the vehicle Is detected.
The current location detection unit 542 creates current location information (information such as latitude and longitude) indicating the current location of the vehicle and travel speed information based on the information acquired from the GPS and the gyro sensor.

The map storage unit 543 is configured by a storage medium such as a hard disk or a DVD, and stores map information necessary for guidance display.
The operation unit 544 includes a hard key provided on the vehicle-mounted device body, a touch panel (soft key) provided integrally with the display of the output unit 545, or a remote control. The operation unit 544 outputs an operation signal corresponding to this operation to the control unit 51 when a key operation is performed by the user.

The output unit 545 includes a display and a speaker. For example, when the content provided from the center apparatus 1 is reproduced, display guidance based on the content is output on the display, and audio guidance is output on the speaker.
The output unit 545 functions as a notification unit that notifies the user of the content stored in the storage unit 546 with an image or sound. The content notification operation by the output unit 545 is controlled by the cooperation of the control unit 51 and the car navigation control unit 541.
The display of the output unit 545 has a touch panel function. When a button arranged on the screen is operated, control corresponding to the button is performed.

The storage unit 546 is configured by, for example, a readable / writable semiconductor memory. The storage unit 546 stores, for example, guide information (road information, traffic jam information, etc.) received via the VICS module 53, vehicle travel history, content data distributed from the center device 1, and the like.
The network communication unit 547 connects to the Internet via the roadside wireless device 2 capable of IP connection or a mobile phone capable of IP connection, for example. For example, it connects to a site specified by URL information included in the content. The connected site is displayed on the display of the output unit 545 by predetermined application software such as a web browser.

  As described above, the vehicle-mounted device 5 of the present embodiment stores the DSRC unit 52 (communication unit) that performs wireless communication with the center device 1 via the roadside wireless device 2 and the content that is distributed from the center device 1. Unit 546, a display (display unit) of output unit 545 that displays a playback screen of content stored in storage unit 546, an operation unit 544 for transitioning the playback screen, and a display of content on the display of output unit 545 A control unit 51 that performs display control of the reproduction screen; and a car navigation control unit 541 (control unit).

FIG. 5 is an explanatory diagram illustrating an example of a data structure of content distributed from the center device 1. As shown in FIG. 5, a plurality of information groups (information group groups) are delivered from the center device 1 at a time, and the in-vehicle device 5 receives a plurality of information groups and immediately reproduces or accumulates them in the storage unit 546. It becomes.
Here, each of the information groups 1, 2,... N in FIG. 5 is one content, and the in-vehicle device 5 performs reproduction processing in units of information groups. In this specification, an information group and content are treated as synonymous.

  As shown in FIG. 5, one information group is composed of a plurality of elements classified by contents. Each component includes an ID number (00, 01,...) And actual data stored corresponding to the ID number. In FIG. 5, information group 1 includes ID = 00 (indicating that the ID number is “00”, and so on), ID = 01, ID = 02, ID = 03, ID = 04, ID = 05, It shows that information defined by ID = 10 and ID = 30 is included.

FIG. 6 is an explanatory diagram showing an example of detailed contents of each element (ID number and actual data stored corresponding to this) constituting the information group.
ID = 00 describes the ID numbers of a plurality of elements constituting the information group. For example, in the case of the information group 1 shown in FIG. 5, “00, 01, 02, 03, 04, 05, 10, 30,. The in-vehicle device 5 can confirm the content of the information included in the information group by referring to the information described in the information group ID = 00.

  ID = 01 describes information about a service provider (center apparatus 1) that distributes a plurality of information groups including the information group. Specifically, the service provider code specified by the organization that manages the operation of the DSRC and uniquely assigned to each service provider, the service provider display text for visually informing the user of the service provider, A service provider phonetic character string for notifying the service provider to the user by voice is described.

  ID = 02 describes information related to the information group (content). Specifically, the information provider company code indicating the provider of the information group distributed by the service provider, the information provider company display text for visually notifying the user of the information provider company, the information provider company to the user Information provision company phonetic character string for notification by voice, information code uniquely assigned to each information group by the service provider, information display text for notifying the user of the name of the information group, and information group An information phonetic character string for notifying the user by voice, a preference data category used for categorizing the information group, and the like are described.

  ID = 03 describes information related to the information group (content). Specifically, an immediate playback / storage code indicating whether the received information group is played back immediately after completion of reception or stored so as to be usable even outside the communication area, in the area (information provision point) where the information group is to be played back A reproduction condition code that defines the behavior when the information group cannot be reproduced is described.

  ID = 04 describes information related to the expiration date of the information group (expiration date information). Specifically, the expiration date / time (start year / month / day / hour / minute / second) and the expiration date / time (end year / month / day / hour / minute / second) are described. The information group can be reproduced after the expiration date / time has passed. On the other hand, the information group whose expiration date / time has passed may not be reproduced. It is also possible to reproduce information groups for which the expiration date / time has passed. These are appropriately set according to the specifications of the vehicle-mounted device.

  ID = 05 describes information relating to the provision time of the information group. Specifically, the business hours for each day of the week at a target point (store or the like) defined by ID = 10, which will be described later, and the information provision time for each day of the week when the information group can be reproduced are described.

  In ID = 10, information related to a target point to be serviced by the information group is described. Specifically, target point coordinates indicating the latitude and longitude of the service target point, target point display text for visually notifying the user of the target point name, and the like are described.

  In ID = 30, information (transition information) related to the transition destination from the reproduction screen of the information group is described. Specifically, the next reproduction information codes 1 to 8 including the information code of the information group of the transition destination (described in ID = 02) are described.

  ID = 40 describes detailed information for searching for a desired information group from a plurality of information groups. Specifically, a detailed information display text such as a keyword for the user to understand the service content provided by the information group is described. For example, when the information group is service information (for example, coupon information, bargain information) for providing a service useful for the user, this ID = 40 describes that the information group is coupon information or bargain information. Is done.

  In the constituent elements of the information group shown in FIG. 6, ID = 00, 01, 02, 03, 04, 05, 10 are essential elements, and these elements are included in principle in the information group.

When the vehicle-mounted device 5 according to the present embodiment receives a plurality of information groups distributed from the center device 1, information is stored in the storage unit 546 of the car navigation unit 54 with the configuration shown in FIG. 6 for each information group. , Will be accumulated. The information group stored in the storage unit 546 is an information group in which an accumulation code is set with ID = 03.
When an information group reproduction operation is performed by the user, the information group selected from the information groups stored in the storage unit 546 is reproduced. At this time, if the next reproduction information codes 1 to 8 are described in the information group ID = 30, a transition destination button (software number) 1-8 for reproduction transition is displayed on the reproduction screen of the information group. Key) is placed.
When the transition destination button is operated by the user, the information group specified by the next reproduction information code (transition destination information code) corresponding to the operated button number is referenced, and the reproduction screen of this information group is displayed. . In the following description, the transition of the information group playback screen may be simply referred to as a playback transition.

  In the present embodiment, when an information group is reproduced, a transition can be made from a reproduction screen for a lower-level information group to a reproduction screen for an information group in a higher hierarchy. Note that the playback transition from the upper hierarchy information group to the lower hierarchy information group is possible even with an in-vehicle device that does not have the features of the present invention by using transition information (next playback information code) included in ID = 30. It has become.

Here, the lower-layer information group is an information group designated as a transition destination of a certain information group, that is, an information group designated by the next reproduction information code in a certain information group ID = 30 (transition information). It is.
Further, an information group in an upper layer is an information group that can be a transition source of a certain information group, that is, an information group in which the information code of a certain information group is registered as the next reproduction information code in the information group ID = 30 It is.
In other words, in this specification, in the information group group having a hierarchical structure, the transition is performed even when the two information groups are actually in the upper and lower hierarchical relations, as well as in the case of the same hierarchical level in the hierarchical structure. When there is a relationship between the original and the transition destination, the information group is referred to as an upper hierarchy / lower hierarchy information group.

In the vehicle-mounted device 5 of the present embodiment, a screen transition table is created in advance and stored in the storage unit 546 in order to transition from the lower-layer information group playback screen to the upper-layer information group playback screen. In this screen transition table, transition source information is registered for each information group stored in the storage unit 546.
Here, the transition source information is information indicating an upper layer information group that can be a transition source of a certain information group, and specifically, an information code of an information group that can be a transition source is registered as the transition source information.
When reproducing an information group, an operation button (hereinafter referred to as a transition source button) for transitioning to an information group in a higher hierarchy is displayed on the reproduction screen. When the transition source button is operated by the user, the information group registered in the transition source information of the screen transition table is reproduced.

  That is, the control unit 51 and the car navigation control unit 541 (control unit) of the vehicle-mounted device 5 cause the display (display unit) of the output unit 545 to display the reproduction screen of the information group (first content) in the lower hierarchy and the operation unit When an operation signal instructing playback transition is input from 544, a playback screen of an upper layer information group (second content) that can be a transition source of the lower layer information group is displayed on the display of the output unit 545.

  As described above, according to the vehicle-mounted device 5 according to the present embodiment, the transition source information is registered for each information group by using the next reproduction information code included in the information group distributed from the center device 1. Makes it possible to transition from the playback screen of the lower-level information group to the playback screen of the higher-level information group that can be the transition source, so there is no need for troublesome operations for playback transition to the upper-layer information group, and convenience is improved. To do.

(First embodiment)
FIG. 7 is an explanatory diagram illustrating a configuration example of a screen transition table according to the first embodiment.
As shown in FIG. 7, registration numbers 1, 2,... Are assigned to information groups registered in the screen transition table, and information provider company code, information code, information provider company display text, and information display are provided for each information group. Text and transition source information are registered.
In the first embodiment, only one information group (information code) is registered as transition source information in the screen transition table. In other words, on the information group reproduction screen, only one information group is selected for reproduction transition when the transition source button is operated.

The screen transition table shown in FIG. 7 shows a case where eight information groups are registered. In the following description, an information group with a registration number n is referred to as an information group n.
The information registered in the screen transition table is not limited to that shown in FIG. 7, and at least information for identifying an information group (for example, an information code) and an information group that is a transition source of the information group. The transition source information shown may be included.
FIG. 7 shows a screen transition table in which information provider company display text and information display text are registered in order to make the contents of each information group easy to understand.

In FIG. 7, for example, for the information group 1, the information providing company code is “000001”, the information code is “000001”, the information providing company display text is “△△△ center”, and the information display text is “△△△ center”. The transition source information is registered as “none”. Since the information group 1 is an information group at the highest level (so-called top page), the transition source information is “none”.
Further, for example, for information group 3, the information providing company code is “000002”, the information code is “000003”, the information providing company display text is “◯ □ △”, and the information display text is “○ □ △ SCXX store”. The transition source information is registered as “000001” (information group 1).
Also, for example, for the information group 4, the information providing company code is “000002”, the information code is “000004”, the information providing company display text is “○ □ △”, and the information display text is “○ □ △ SCXX store lunch. It is registered that the “coupon” and the transition source information are “000002” (information group 2).

Here, the information providing company code, the information code, the information providing company display text, and the information display text are registered in step S107 in FIG.
On the other hand, the transition source information is registered in step S109 (detailed in FIGS. 9 and 10) in FIG. If a next reproduction information code is described in ID = 30 (transition information) for a certain information group, transition source information is registered for the information group specified by this next reproduction information code (information group information code). The Rukoto.

  That is, in FIG. 7, information groups 2, 3, 5, 7, 8 have information group 1 as a transition source (that is, information groups 2, 3, 5, 7, 8 are included in the next reproduction information code of information group 1). Is registered). As will be described later, when there are a plurality of information groups that can be transition sources, the transition source information is registered according to a preset rule.

  FIG. 8 is a flowchart illustrating an example of a reception process (reception process 1) according to the first embodiment. This reception process is realized, for example, by the CPU 511 executing the reception process program in the ROM 512 when the vehicle (the vehicle-mounted device 5) enters the roadside area Z of the roadside apparatus 2 and DSRC communication is started. The

In step S101, it is determined whether the vehicle-mounted device 5 is in the road-side area Z of the roadside apparatus 2 (area-in), that is, whether the vehicle-mounted apparatus 5 and the roadside device 2 are in communication. If it is determined that the area is in, the process proceeds to step S102. If it is determined that the area is not in, the process proceeds to step S109.
In step S102, it is determined whether reception of one information group among a plurality of information groups transmitted from the roadside apparatus 2 is completed. When reception of the information group is completed, the process proceeds to step S103. That is, every time one information group is completed, the information group is reproduced / saved and registered in the screen transition table.

In step S103, it is determined whether or not the received information group includes information defined by ID = 01, 02, 03 (information on the business operator and information on the content). For example, since the ID list of the information group is described in the information group ID = 00, the determination is made based on whether ID = 01, 02, 03 is described in the ID = 00.
If it is determined that the information defined by ID = 01, 02, 03 is included, it is determined that the reception has been completed normally, and the process proceeds to step S104. On the other hand, if it is determined that the information defined by ID = 01, 02, 03 is not included, it is determined that the information group cannot be received normally, and the process proceeds to step S101. That is, this information group is neither reproduced nor stored in the in-vehicle device 5 and is not registered in the screen transition table.

In step S104, the immediate reproduction / accumulation code described in ID = 03 in the received information group is referred to.
In step S105, it is determined whether or not the immediate reproduction / accumulation code described in ID = 03 is a code indicating accumulation. When it is determined that the code indicates accumulation, the process proceeds to step S106. When it is determined that the code does not indicate accumulation (in the case of a code indicating immediate reproduction), the process proceeds to step S101. That is, the information group to be immediately reproduced is reproduced as it is in the car navigation unit 54 after completion of reception and is not stored in the storage unit 546. Also, it is not registered in the screen transition table (see FIG. 7).

In step S106, the received information group is stored in the storage unit 546.
In step S107, information other than the transition source information is registered in the screen transition table. That is, in the case of the screen transition table shown in FIG. 7, the information providing company code, the information providing company display text, the information code, and the information display text described in ID = 02 in the received information group are extracted, and the screen transition is performed. Register in the table.
In step S108, it is determined whether reception has been completed for all information groups transmitted from the roadside apparatus 2. If it is determined that reception has been completed for all information groups, the process proceeds to step S109. If it is determined that reception has not been completed, the process proceeds to step S101 to receive the next information group.

In step S109, transition source information confirmation processing is performed for all received information groups. That is, when all the information groups are received (“YES” in step S108), or when the vehicle-mounted device 5 is out of the roadside area Z of the roadside apparatus 2, the transition source information confirmation process is performed. In addition, when the onboard equipment 5 becomes out of the roadside area Z of the roadside apparatus 2, the transition source information confirmation process is performed on the information groups received so far.
When the transition source information is registered / unregistered for all information groups registered in the screen transition table by this transition source information confirmation processing, the reception processing is terminated.

  FIG. 9 is a flowchart illustrating an example of the transition source information confirmation process (step S109 in FIG. 8). In FIG. 9, the information group registered in the screen transition table in step S107 of FIG. 8 is “I”, and the information group that is the transition destination of the information group I is “Y”. That is, the information group I is an information group in the upper hierarchy of the information group Y, and the information group Y is an information group in the lower hierarchy of the information group I.

In step S111, the information group I registered at the top in the screen transition table is referred to. Here, referring to the information group refers to referring to actual data of the information group stored in the storage unit 546.
In step S112, whether the information group I being referred to includes information (transition information) defined by ID = 30, that is, whether the information group I has a lower-layer information group that can transition from the information group I. Determine whether or not. For example, the determination is based on whether ID = 30 is described in ID = 00 of information group I. And when it determines with including transition information, it transfers to step S113.
On the other hand, when it is determined that the information group I does not include transition information (that is, when the information group I is an information group of the lowest hierarchy), the process proceeds to step S119. This is because an information group that does not have transition information cannot be a transition source of another information group.

In step S113, the next reproduction information code described in ID = 30 in the information group I is referred to.
In step S114, it is determined whether or not a specific next reproduction information code is described in ID = 30. Even if ID = 30 in ID = 00 of information group I (“YES” in step S112), there is a possibility that the next reproduction information code (actual data) is not actually described in ID = 30. Therefore, it is determined whether or not the next reproduction information code with ID = 30 is actually described. If it is determined that the next reproduction information code is described in ID = 30 of the information group I, the process proceeds to step S115. If it is determined that the next reproduction information code is not described, the process proceeds to step S119.
In step S115, the information group Y specified by the head next reproduction information code described in ID = 30 of the information group I is searched from the screen transition table.

In step S116, a transition source information registration process for registering the information code of the information group I as the transition source information of the information group Y that is the transition destination is performed.
This transition source information confirmation processing is performed according to the flowchart shown in FIG.
FIG. 10 is a flowchart illustrating an example of the transition source information registration process.
In step S131, it is determined whether or not the transition source information of the information group Y has already been registered in the screen transition table. And when it determines with the transition source information of the information group Y having been registered, it transfers to step S132.
On the other hand, when it determines with the transition source information of the information group Y not being registered, it transfers to step S133 and registers the information group I as the transition source information of the information group Y.
In step S132, it is determined whether or not to register information group I as transition source information of information group Y. For example, according to the priority rule shown in FIG. 11, it is determined which of the previously registered information group or information group I is registered as the transition source information.

FIG. 11 is an explanatory diagram illustrating an example of a priority rule when registering transition source information in the first embodiment.
As shown in FIG. 11, as priority rules, the information group with the earlier / latest reception time is given priority as the transition source (rules 1 and 2), and the information group with the larger / smaller information code is given priority. And the transition source (rules 3 and 4), the information group having the larger / smaller information provider code is given priority as the transition source (rules 5 and 6).
In addition, in the case of rules (rules 5 and 6) in which the information group having the larger / smaller information providing company code is given priority as a transition source (rules 5 and 6), the information providing company code may be the same. In such a case, the reception time is further compared, and the information group with the earlier / latest reception time is preferentially used as the transition source (rules 7 to 10), or the information code is compared with the larger information code. / Prefer the smaller information group as the transition source (rules 11 to 14).
In the first embodiment, since only one information group transition source information is registered, it is necessary to set a priority rule as shown in FIG. 11 in advance.

If it is determined in step S132 in FIG. 10 that information group I is registered as transition source information of information group Y, the process proceeds to step S133. If it is determined that information group I is not registered as transition source information, the transition source information registration process is terminated. .
In step S133, the information group I is registered as the transition source information of the information group Y, and the transition source information registration process is terminated.
By this transition source information registration process, the information group I in the upper hierarchy is registered / unregistered as the transition source information of the information group Y in the lower hierarchy. When the transition source information registration information ends, the process returns to the flowchart of FIG.

In step S117 of FIG. 9, it is determined whether another next reproduction information code is described in ID = 30 in the information group I. If it is determined that another next reproduction information code is described in ID = 30 of the information group I, the process proceeds to step S118. If it is determined that no other next reproduction information code is described, step S119 is performed. Migrate to
In step S118, the information group Y specified by the next next reproduction information code described in the ID = 30 of the information group I is searched from the screen transition table, and the processing after step S116 is performed.
By repeating steps S116 to S118, the information group I is registered / unregistered as the transition source information for all the information groups Y in which the information group I can be the transition source.

In step S119, it is determined whether there is another information group in the screen transition table, that is, an information group that has not undergone the processing in step S112 and thereafter. If it is determined that there is another information group, the process proceeds to step S120.
In step S120, the information group I registered next in the screen transition table is referred to, and the processes after step S112 are performed.
On the other hand, when it determines with there being no other information group in step S119, a transition source information confirmation process is complete | finished.

8 to 10, a screen transition table for making a transition from the reproduction screen of the lower hierarchy information group to the reproduction screen of the upper hierarchy information group is created.
Thus, in the first embodiment, when there are a plurality of information groups I that can be a transition source for one information group Y, the control unit 51 selects a predetermined condition (for example, 11 is selected according to the priority rule of FIG. 11 and set as the transition source of the information group Y.

FIG. 12 is a flowchart illustrating an example of the display control process. This information group display control process is realized, for example, when the CPU 511 executes the display control process program in the ROM 512 when the user instructs the reproduction of the information group using the operation unit 544.
In step S201 in FIG. 12, an information group instructed to be reproduced by a user operation is referred to.
In step S202, reproduction processing of the referenced information group is performed. This reproduction process is performed according to a flowchart shown in FIG.
In step S203, screen transition processing for transitioning the playback screen is performed on the playback screen displayed on the display of the output unit 545 by the playback processing of step S202. This screen transition process is performed according to a flowchart shown in FIG.
In step S204, it is determined whether or not the user has performed an operation for instructing the end of reproduction of the information group. If it is determined that the end of playback has been instructed, the process proceeds to step S205. If it is determined that the end of playback has not been instructed, the process proceeds to step S203.
In step S205, the display being reproduced is erased, and the display control process ends.

FIG. 13 is a flowchart illustrating an example of a playback process (playback process 1) according to the first embodiment.
In step S211, the information group referred to in step S201 in FIG. 12 is reproduced. Specifically, information included in the referred information group (for example, information providing company display text or information display text of ID = 01, next reproduction information code of ID = 30, target point display text of ID = 10, image data) Etc.) to generate screen data, and a reproduction screen showing details of the information group is displayed on the display of the output unit 545.
At this time, for example, if the next reproduction information codes 1 to 8 are described in the ID = 30 of the referred information group, the numbers 1 to 8 for screen transition are attached on the reproduction screen of the information group. Transition destination buttons (soft keys) are arranged.
In step S212, a transition source button for transitioning to a higher level information group (including an information group that is the same layer and can be a transition source) is arranged. Note that the display of the transition source button is not necessarily according to the flowchart shown in FIG. 13, and may be at the same timing (step S211) as the display of the transition destination button, for example. Since the transition source button is a characteristic point of the present invention, it is distinguished and described in the flowchart shown in FIG.

  FIG. 17 is an explanatory diagram illustrating an example of the information group reproduction screen according to the first embodiment. FIG. 17A shows the reproduction screen of information group 3 in the screen transition table shown in FIG. 7, and FIG. 17B shows the reproduction screen of information group 4.

When reproduction of the information group 3 is instructed by the user's operation, the information group 3 designated by the information code “000003” is reproduced and a transition source button (displayed as “up one” in the figure) is arranged. Then, a playback screen as shown in FIG. 17A is displayed.
Since ID = 30 of the information group 3 describes information codes of two information groups (information groups whose information display texts are “value coupon” and “dessert menu”) as the next reproduction information code, Transition destination buttons B1 and B2 for reproducing the information group are arranged. In addition, a transition source button B3 is arranged in the lower right area of the screen.

When the reproduction of the information group 4 is instructed by the user's operation, the information group 4 specified by the information code “000004” is reproduced and the transition source button is arranged, as shown in FIG. A replay screen appears.
Since the information group 4 is the lowest layer and does not have transition information defined by ID = 30, only the transition source button B3 is arranged in the lower right area of the screen as a button for playback transition.
In addition, in the information group 4 ID = 10, since URL information is described as information on the target point, a button B4 for connecting to the network is arranged. When the network connection button B5 is operated, connection processing to the Internet is executed by the network connection unit 547 of the car navigation unit 54. When the connection is established, the site specified by the URL information is displayed by application software such as a web browser.

  When the reproduction process 1 shown in FIG. 13 is executed, a reproduction screen shown in FIG. 17 is displayed on the display of the output unit 545, for example. Then, on the playback screen shown in FIG. 17, the user performs a playback transition of the information group by operating the transition destination buttons B1, B2 or the transition source button B3.

FIG. 14 is a flowchart illustrating an example of the screen transition process. As shown in FIG. 12, this screen transition process is executed after the information group playback screen is displayed.
In step S221, it is determined whether or not an operation (for example, an operation of the transition destination buttons B1 and B2 or the transition source button B3 in FIG. 17) instructing reproduction transition of the information group has been performed by the user. If it is determined that the playback transition has been instructed, the process proceeds to step S222. If it is determined that the playback transition has not been instructed, the screen transition process ends.
In step S222, it is determined whether or not the operation by the user is an operation for instructing a transition of reproduction of the next screen, that is, an operation of the transition destination buttons (B1 and B2 in FIG. 17). And when it determines with it being operation of a transition destination button, it transfers to step S223 and performs normal transition processing, and determined that it is not operation of a transition destination button (it is operation of a transition source button (B3 of FIG. 17)). In this case, the process proceeds to step S224 to perform special transition processing.

The normal transition process of step S223 is performed according to the flowchart of FIG.
In FIG. 15, in step S231, an information group corresponding to the operated button number is referred to.
In step S232, the reproduction process 1 shown in FIG. 13 is performed. That is, the information group referred to in step S231 is reproduced and a transition source button is displayed.
For example, in the playback screen shown in FIG. 17A, when the user operates the transition destination button B1, the information group of “discount coupon” is played back, and the transition destination button B2 is operated. The “dessert menu” information group is played back.

In FIG. 14, the special transition process of step S224 is performed according to the flowchart of FIG.
In FIG. 16, in step S241, it is determined whether or not the transition source information of the screen transition table (see FIG. 7) is registered for the information group being reproduced. If it is not the highest-level information group, the transition source information is registered. If it is determined that the transition source information is registered, the process proceeds to step S242. If it is determined that the transition source information is not registered, the special transition process is terminated.
That is, even if the transition source button is operated on the playback screen of the information group in the highest hierarchy, the playback transition is not actually performed. Therefore, on the reproduction screen of the information group in the highest hierarchy, the transition source button may be hidden or displayed in a manner in which it can be recognized that it is inactive (for example, displayed in a translucent manner).

In step S242, the information group specified by the information code registered as the transition source information is referenced.
In step S243, the reproduction process 1 shown in FIG. 13 is performed. That is, the information group referred to in step S242 is reproduced and one transition source button is displayed.

  For example, when the transition source button B3 is operated on the playback screen shown in FIG. 17A, the information group 1 (information about the ΔΔΔ center) registered as the transition source information is played back. Also, for example, when the transition source button B3 is operated on the playback screen shown in FIG. 17B, the information group 2 registered as the transition source information (ΔΔΔ center meal information) is played back. .

In this way, in the first embodiment, the information group display control process is performed according to the flowcharts of FIGS.
According to the vehicle-mounted device 5 according to the first embodiment, since there is one information group registered as the transition source information in the screen transition table, an extremely simple operation such as an operation of one transition source button B3 can be used. It is possible to transition to the information group. Since the information group registered as the transition source information is determined according to the priority rule, when the transition source button B3 is operated, there is little possibility that the information group far from the information group desired by the user is reproduced. .

(Second Embodiment)
The second embodiment is different from the first embodiment in that a plurality of information groups can be registered as transition source information in the screen transition table. Hereinafter, descriptions similar to those of the above-described embodiment may be omitted.
FIG. 18 is an explanatory diagram illustrating a configuration example of a screen transition table according to the second embodiment.
As shown in FIG. 18, registration numbers 1, 2,... Are assigned to information groups registered in the screen transition table, and information providing company codes, information codes, information providing company display texts, information displays are provided for each information group. Text, transition source information 1, information display text of transition source information 1, transition source information 2, information display text of transition source information 2, and so on are registered.

  In the second embodiment, since a plurality of transition source buttons are arranged on the information group playback screen, it is desirable to allow the user to recognize the information group to be played and transitioned by operating each transition source button. . Therefore, the information display text of the transition source information 1 and 2 is registered in the screen transition table shown in FIG. 18 so that the information display text can be added to the transition source button displayed on the reproduction screen.

In FIG. 18, for example, for information group 1, it is registered that the transition source information 1 and 2 is “none”.
For example, for information group 7, transition source information 1 is “000001” (information group 1), information display text of transition source information 1 is “ΔΔΔ center”, and transition source information 2 is “000002” (information group 2) It is registered that the information display text of the transition source information 2 is “meal information”.

  Here, information other than the transition source information is registered in step S107 of FIG. 8 described in the first embodiment. On the other hand, the transition source information is registered in step S109 (detailed in FIGS. 9 and 10) in FIG.

The reception process according to the second embodiment is performed in substantially the same manner as the process (FIGS. 8 to 10) described in the first embodiment. In the first embodiment, in the transition source information registration process shown in FIG. 10, when there are a plurality of information groups that can become the transition source of the information group, one information group is registered as transition source information according to the priority rule. On the other hand, in the second embodiment, all information groups that can become the transition source of the information group are registered as transition source information.
That is, when it is determined in step S131 of FIG. 10 that the transition source information of the information group Y in the screen transition table has already been registered, the process proceeds to step S133, and the information group I is added as transition source information. It will be registered. At this time, not only the information code is registered as the transition source information but also the information display text corresponding to the information code is registered.

The display control process according to the second embodiment is different from the reproduction process and the special transition process among the processes (FIGS. 12 to 16) described in the first embodiment.
FIG. 19 is a flowchart illustrating an example of a reproduction process (reproduction process 2) according to the second embodiment.
In step S251, the information group referred to in step S201 in FIG. 12 is reproduced. Specifically, information included in the referred information group (for example, information providing company display text or information display text of ID = 01, next reproduction information code of ID = 30, target point display text of ID = 10, image data) Etc.) to generate screen data, and a reproduction screen showing details of the information group is displayed on the display of the output unit 545.
At this time, for example, if the next reproduction information codes 1 to 8 are described in the ID = 30 of the referred information group, the numbers 1 to 8 for screen transition are attached on the reproduction screen of the information group. Transition destination buttons (soft keys) are arranged.

In step S252, it is determined whether or not the transition source information is registered in the referenced information group. If it is determined that the transition source information is registered, the process proceeds to step S253, and if it is determined that the transition source information is not registered (the information group referred to is the information group of the highest hierarchy), the reproduction process is performed. 2 is finished.
In step S253, a transition source button for transitioning to a higher level information group (including information groups that are the same layer and can be a transition source) is displayed. At this time, the information display text of the transition source information registered in the screen transition table is displayed on the transition source button.
When a plurality of transition source information is registered for the referenced information group, the transition source buttons are displayed as many as the number of transition source information.
Note that transition source buttons (number buttons) with numbers (1 to 3 in the case of FIG. 21) are arranged as transition source buttons, and information display text of transition source information is superimposed and displayed corresponding to each number button. You may make it do.

FIG. 21 is an explanatory diagram showing an example of the information group reproduction screen according to the second embodiment. FIG. 21 shows a playback screen of the information group 8 in the screen transition table shown in FIG. In FIG. 18, the third transition source information 3 of the information group 8 is omitted.
When the reproduction of the information group 8 is instructed by the user's operation, the information group 8 specified by the information code “000008” is reproduced and three transition source buttons are arranged, and a reproduction screen as shown in FIG. Is displayed.
Since the information group 8 is the lowest layer and does not have the transition information defined by ID = 30, the transition destination button is not arranged. Therefore, three transition source buttons B5 to B7 are arranged in the lower area of the screen as buttons for reproduction transition.

  In FIG. 21, the screen lower area is used as an area for arranging the transition source buttons B5 to B7, but the arrangement mode of the transition source buttons is not limited to this. For example, a dedicated area for placing the transition source button may be secured, that is, the entire screen may be divided into an area for displaying the contents of the information group and an area for placing the transition source button. Then, the contents of the information group may be displayed on the entire screen, and the transition source button may be displayed in a form superimposed on it.

When the reproduction process 2 shown in FIG. 19 is executed, a reproduction screen shown in FIG. 21 is displayed on the display of the output unit 545, for example. Then, on the playback screen shown in FIG. 21, the user performs a playback transition of the information group by operating any of the transition destination buttons B5 to B7.
As described above, in the second embodiment, when there are a plurality of information groups that can be a transition source for one information group, a plurality of transition sources that can be a transition source are displayed on the playback screen of the information group (first content) in the lower hierarchy. A plurality of transition source buttons (operation units) corresponding to information groups (higher-level information group, second content) are provided (transition source buttons B5 to B7 in FIG. 21). Then, when an operation signal is input from any of the plurality of transition source buttons B5 to B7 (operation unit), the control unit 51 displays the reproduction screen of the corresponding upper layer information group on the display (display) of the output unit 545. Display).

In the second embodiment, the special transition process in step S224 in FIG. 14 is performed according to the flowchart in FIG.
In FIG. 20, in step S261, the information group registered as the transition source information corresponding to the operated transition source button is referred to reproduce the information group corresponding to the operated transition source button.
In step S262, the reproduction process 2 shown in FIG. 19 is performed. That is, the information group referred to in step S261 is reproduced and a transition source button is displayed. If a plurality of transition source information is registered for the referenced information group, a plurality of transition source buttons are displayed.

  For example, when the transition source button B5 is operated on the playback screen shown in FIG. 21, the information group 1 (information about the ΔΔΔ center) registered as the transition source information 1 corresponding to the transition source button B5 is played back. The Also, for example, when the transition source button B6 is operated on the playback screen shown in FIG. 21, information group 2 registered as transition source information 2 corresponding to the transition source button B6 (ΔΔΔ center meal information) Is played.

  In the second embodiment, the normal transition process in step S223 in FIG. 14 is performed according to the flowchart in FIG. 15, but the reproduction process 2 shown in FIG. 19 is performed in step S243 in FIG.

As described above, in the second embodiment, the information group display control process is performed according to the flowcharts of FIGS. 12, 14, 16, 19 and 20.
According to the vehicle-mounted device 5 according to the second embodiment, a plurality of transition source buttons to which information display text is added are displayed on the reproduction screen of the information group in the lower hierarchy, so that the user operates the transition source button. By doing so, it is possible to easily recognize the contents of the information group to be reproduced and changed. In addition, since the user determines the upper hierarchy information group to be reproduced and transitioned from among a plurality of options, the user can reproduce and transition to the desired upper hierarchy information group.

(Third embodiment)
The third embodiment is similar to the second embodiment in that a plurality of information groups are registered as transition source information for one information group in the screen transition table, but the information group display control processing is the second. Different from the embodiment. Therefore, the screen transition table according to the third embodiment has the configuration shown in FIG.
Specifically, the display control process according to the third embodiment is different from the process described in the second embodiment in the reproduction process and the special transition process. The reproduction process is performed in the same manner as in the first embodiment.

FIG. 22 is an explanatory diagram showing an example of an information group reproduction screen according to the third embodiment. FIG. 22 shows a reproduction screen of the information group 8 in the screen transition table shown in FIG. In FIG. 18, the third transition source information 3 of the information group 8 is omitted.
When the reproduction of the information group 8 is instructed by the user's operation, the information group 8 specified by the information code “000008” is reproduced.
Since the information group 8 is the lowest layer and does not have the transition information defined by ID = 30, the transition destination button is not arranged. Therefore, the transition source button B3 is arranged in the lower right area of the screen as a button for reproduction transition.

  In the third embodiment, when the reproduction process 1 shown in FIG. 13 is executed, a reproduction screen shown in FIG. 22 is displayed on the display of the output unit 545, for example. Then, on the playback screen shown in FIG. 22, the user performs the transition transition of the information group by operating the transition source button B3.

In the third embodiment, the special transition process in step S224 in FIG. 14 is performed according to the flowchart in FIG.
In step S271, it is determined whether or not the transition source information of the screen transition table (see FIG. 18) is registered for the information group being reproduced. If it is determined that the transition source information is registered, the process proceeds to step S272. If it is determined that the transition source information is not registered, the special transition process is terminated.

In step S272, it is determined whether a plurality of information groups are registered as transition source information in the information group being reproduced. If it is determined that a plurality of information groups are not registered as transition source information (one information group is registered as transition source information), the process proceeds to step S273, and a plurality of information groups are registered. If it is determined, the process proceeds to step S274.
In step S273, the information group registered as the transition source information is referred to.

In step S274, a transition source list screen for causing the user to select an information group to be reproduced and transitioned is generated and displayed.
FIG. 24 is an explanatory diagram showing an example of the information group reproduction screen (during special transition processing) according to the third embodiment.
When the user operates the transition source button B3 on the playback screen shown in FIG. 22, a transition source list screen Ds shown in FIG. 24 is displayed. As shown in FIG. 24, this transition source list screen Ds is, for example, a sub-screen displayed superimposed on an information group reproduction screen (main screen) Dm.

On the transition source list screen Ds, for example, a plurality of transition source buttons B9 to B11 for transitioning to an upper layer information group (including information groups that are the same layer and can be a transition source) are arranged. In these transition source buttons B9 to B11, information display text of transition source information registered in the screen transition table is displayed. As described above, in FIG. 24, the transition source buttons B9 to B11 to which the information display text is added are arranged in the vertical direction to configure a list of information groups that are the transition sources.
In addition, a button B8 for closing the transition source list screen Ds is arranged in the lower right area of the transition source list screen Ds, and a playback transition “Which place will it move to” is displayed in the upper area of the list screen Ds. A prompt message is displayed.

In FIG. 23, in step S275, it is determined whether the operation of the transition source buttons (transition source buttons B9 to B11 in FIG. 24) arranged on the transition source list screen has been performed. When it is determined that the operation of the transition source button has been performed, the process proceeds to step S276, and when it is determined that the operation of the transition source button has not been performed, the process proceeds to step S278.
In step S276, in order to reproduce the information group corresponding to the operated transition source button, the information group registered as the transition source information corresponding to the operated transition source button is referred to.

In step S277, the reproduction process 1 shown in FIG. 13 is performed. That is, the information group referred to in step S273 or step S276 is reproduced and one transition source button is displayed.
In step S278, it is determined whether the button to be closed is operated on the transition source list screen. If it is determined that the button for closing is operated, the process proceeds to step S279, and if it is determined that the button for closing is not operated, the process proceeds to step S275.
In step S279, the transition source list screen is deleted, and the special transition process 3 is terminated. At this time, no information group reproduction transition is performed.

  For example, when the transition source button B9 is operated on the playback screen (during the special transition process) shown in FIG. 24, the information group 1 registered as the transition source information 1 corresponding to the transition source button B9 (ΔΔΔ center) Information) is played back. Also, for example, when the transition source button B10 is operated on the playback screen shown in FIG. 24, the information group 2 registered as the transition source information 2 corresponding to the transition source button B10 (ΔΔΔ center meal information) Is played.

Thus, in the third embodiment, the information group display control processing is performed according to the flowcharts of FIGS. 12 to 15 and FIG. 23.
That is, when there are a plurality of information groups that can be a transition source for one information group, the control unit 51 uses the transition source button B3 (operation unit) on the playback screen of the lower-level information group (first content). When an operation signal is input, a list of a plurality of information groups (second contents) that can become transition sources is displayed on the display (display unit) of the output unit 545, and a reproduction screen of the information group selected in the list Is displayed on the display of the output unit 545.

According to the vehicle-mounted device 5 of the third embodiment, since a plurality of transition source buttons to which information display text is added are displayed on the transition source list screen, the user makes a playback transition by operating the transition source button. The contents of the information group can be easily recognized. In addition, since the user determines the upper hierarchy information group to be reproduced and transitioned from among a plurality of options, the user can reproduce the desired upper hierarchy information group.
Furthermore, on the information group playback screen, only one transition source button for playback transition to an upper level information group is arranged unless the transition source button is operated, so by arranging a large number of transition source buttons The display of the playback screen can be prevented from becoming complicated.

(Fourth embodiment)
The fourth embodiment is the same as the third embodiment in that a plurality of information groups are registered as transition source information for one information group in the screen transition table. A selection flag indicating whether or not the information group registered in the transition source information has been reproduced by operating the transition source button is provided, and processing when the transition source button is operated according to the on / off state of the selection flag is performed. This is different from the third embodiment.

FIG. 25 is an explanatory diagram illustrating a configuration example of a screen transition table according to the fourth embodiment.
25, selection flags corresponding to the transition source information 1, 2,... Are added to the configuration of the screen transition table shown in FIG.
In FIG. 25, for example, for the information group 1, it is registered that the transition source information 1 and 2 is “none”.
For example, for the information group 8, the transition source information 1 is “000001” (information group 1), the information display text of the transition source information 1 is “ΔΔΔ center”, and the selection flag of the transition source information 1 is “off”. The transition source information 2 is registered as “000002” (information group 2), the information display text of the transition source information 2 is “meal information”, and the selection flag of the transition source information 2 is “ON”.

Here, information other than the transition source information is registered in step S107 of FIG. 8 described in the first embodiment. On the other hand, the transition source information is registered in step S109 (detailed in FIGS. 9 and 10) in FIG.
The selection flag corresponding to the transition source information is initially set to “off” when the information group is registered in the screen transition table, and is reproduced when the special transition process 4 described later is played by operating the transition source button. Set to “On”.

  The display control process according to the fourth embodiment is different from the process described in the third embodiment in a special transition process. Therefore, in the fourth embodiment, when the reproduction process 1 shown in FIG. 13 is executed, for example, the reproduction screen shown in FIG. 22 is displayed on the display of the output unit 545 (similar to the third embodiment). Then, on the playback screen shown in FIG. 22, the user performs the transition transition of the information group by operating the transition source button B3.

In the fourth embodiment, the special transition process in step S224 in FIG. 14 is performed according to the flowchart in FIG. In FIG. 26, the processes of steps S284, S285, and S289 are different from the special transition process 3 (see FIG. 23) according to the third embodiment.
In step S271, it is determined whether or not the transition source information of the screen transition table is registered for the information group being reproduced. If it is determined that the transition source information is registered, the process proceeds to step S282. If it is determined that the transition source information is not registered, the special transition process is terminated.

In step S282, it is determined whether a plurality of information groups are registered as transition source information in the information group being reproduced. If it is determined that a plurality of information groups are not registered as transition source information (one information group is registered as transition source information), the process proceeds to step S283, and a plurality of information groups are registered. If it is determined, the process proceeds to step S284.
In step S283, the information group registered as the transition source information is referred to.

  In step S284, it is determined whether or not there is an information group in which the selection flag is on among a plurality of information groups registered as transition source information in the screen transition table. If there is an information group for which the selection flag is on, the process proceeds to step S285. If there is no information group for which the selection flag is on, the process proceeds to step S286.

In step S285, the information group registered in the transition source information whose selection flag is turned on in the screen transition table is referred to. That is, in the screen transition table, even if multiple information groups are registered in the transition source information, if there is an information group with the selection flag turned on, this information group will be displayed when the transition source button is operated. I try to play it.
For example, in the playback screen shown in FIG. 22 (playback screen of information group 8), when the transition source button B3 is operated, it is registered as transition source information 2 (see FIG. 25) with the selection flag turned on. Information group 1 (ΔΔΔ center meal information) with information code “000002” is reproduced.

In step S286, a transition source list screen for causing the user to select an information group to be reproduced and transitioned is generated and displayed. For example, the transition source list screen shown in FIG. 24 is displayed.
In step S287, it is determined whether the transition source buttons (transition source buttons B9 to B11 in FIG. 24) arranged on the transition source list screen have been operated. If it is determined that the transition source button has been operated, the process proceeds to step S276. If it is determined that the transition source button has not been operated, the process proceeds to step S278.

In step S288, in order to reproduce the information group corresponding to the operated transition source button, the information group specified by the information code registered as the transition source information corresponding to the operated transition source button is referred to.
In step S289, the selection flag corresponding to the transition source information in which the information code of the information group referred to in step S288 is registered is set to “on”.
In step S290, the reproduction process 1 shown in FIG. 13 is performed. That is, the information group referred to in steps S283, S285, and S289 is reproduced and one transition source button is displayed.

In step S291, it is determined whether the button to be closed is operated on the transition source list screen. If it is determined that the button for closing is operated, the process proceeds to step S292. If it is determined that the button for closing is not operated, the process proceeds to step S287.
In step S293, the transition source list screen is deleted, and the special transition process 4 is terminated.

Thus, in the fourth embodiment, the information group display control process is performed according to the flowcharts of FIGS.
That is, the control unit 51 sets the selection flag corresponding to the information group selected on the transition source list screen to “ON”, and on the playback screen of the information group (first content) in the lower hierarchy, the transition source button B3 ( When an operation signal is input from the operation unit), the reproduction screen of the information group (second content) in which the selection flag is set to ON is displayed on the display (display unit) of the output unit 545.
According to the vehicle-mounted device 5 of the fourth embodiment, even when a plurality of information groups are registered as transition source information, if the user has selected as a transition source in the past, the information group is automatically reproduced. Therefore, the user does not need to select an information group to be reproduced and changed. An information group whose selection flag is set to “on” is an information group that has been reproduced and transitioned by a user's selection operation in the past, and is an information group that the user desires as a transition source of the information group that is being reproduced. Therefore, there is little risk of problems caused by automatically making a reproduction transition.

(Fifth embodiment)
The fifth embodiment is the same as the third embodiment in that a plurality of information groups are registered as transition source information for one information group in the screen transition table. A transition source history indicating that a playback transition has been performed from an upper level information group is provided, and processing is performed when the transition source button is operated according to the presence or absence of an information group registered in the transition source history. Different from the third embodiment.

FIG. 27 is an explanatory diagram illustrating a configuration example of a screen transition table according to the fifth embodiment.
In FIG. 27, a transition source history is added to the configuration of the screen transition table shown in FIG.
In FIG. 27, for information group 8, for example, information code “000001” (information group 1) is registered as the transition source history. That is, the information group 8 has been reproduced by operating a transition destination button (for example, the eighth transition destination button) on the reproduction screen of the information group 1.

Here, information other than the transition source information is registered in step S107 of FIG. 8 described in the first embodiment. On the other hand, the transition source information is registered in step S109 (detailed in FIGS. 9 and 10) in FIG.
The transition source history is not registered at the beginning when the information group is registered in the screen transition table, but is reproduced by the operation of the transition destination button in the normal transition process 2 described later, the information code of the transition source information group Is registered.

  The display control process according to the fifth embodiment is different from the process described in the third embodiment in the normal transition process and the special transition process. Therefore, in the fifth embodiment, when the reproduction process 1 shown in FIG. 13 is executed, for example, the reproduction screen shown in FIG. 22 is displayed on the display of the output unit 545 (similar to the third embodiment). Then, on the playback screen shown in FIG. 22, the user performs the transition transition of the information group by operating the transition source button B3.

In the fifth embodiment, the normal transition process in step S223 in FIG. 14 is performed according to the flowchart in FIG.
In FIG. 28, in step S301, the information group corresponding to the operated button number is referred to.
In step S302, the information group currently being reproduced is registered as the transition source history of the information group referred to in step S301.
In step S303, the reproduction process 1 shown in FIG. 13 is performed. That is, the information group referred to in step S301 is reproduced and a transition source button is displayed.
By this normal transition process 2, the transition source history of the screen transition table is registered. That is, when the reproduction transition (normal transition) from the upper layer information group (second content) to the lower layer information group (first content) is performed based on the next reproduction information code, the control unit 51 As the transition source history of the information group of the lower hierarchy, the information group of the upper hierarchy of the transition source is registered.

In the fifth embodiment, the special transition process in step S224 in FIG. 14 is performed according to the flowchart in FIG.
In step S311, it is determined whether or not the transition source information of the screen transition table is registered for the information group being reproduced. If it is determined that the transition source information is registered, the process proceeds to step S312. If it is determined that the transition source information is not registered, the special transition process is terminated.

In step S312, it is determined whether or not the transition source history of the screen transition table is registered for the information group being reproduced. If it is determined that the transition source history is registered, the process proceeds to step S313. If it is determined that the transition source history is not registered, the process proceeds to step S315.
In step S313, the information group registered in the transition source history is referred to. For example, in the screen transition table shown in FIG. 27, for the information group 8, since the information group 1 is registered as the transition source history, the information group 1 is referred to.

In step S314, the reproduction process 1 shown in FIG. 13 is performed. That is, when the operation signal is input from the transition source button on the playback screen of the lower layer information group (first content), the control unit 51 displays the information group (first layer) set in the transition source history. 2 content) playback screen is displayed on the display (display unit) of the output unit 545.
In step S315, the special transition process 3 shown in FIG. 23 is performed.

Thus, in the fifth embodiment, the information group display control process is performed according to the flowcharts of FIGS. 12 to 14, 28, and 29.
According to the vehicle-mounted device 5 of the fifth embodiment, even when a plurality of information groups are registered as transition source information, the user designates the transition destination in the past as the transition destination on the playback screen of the upper hierarchy information group, and the lower hierarchy. If the transition transition button is operated on the playback screen of the lower-level information group, the upper-level information group that is the transition source is automatically played back. The user does not need to select an information group to be reproduced and transitioned. In addition, since the reproduction transition reflects the reproduction tendency of the user, there is little possibility that a problem occurs when the reproduction transition is automatically performed.

(Sixth embodiment)
The sixth embodiment is the same as the third embodiment in that a plurality of information groups are registered as transition source information for one information group in the screen transition table. Counts the number of times the information group registered in the transition source information is selected as the transition destination of the higher-level information group, and performs processing when the transition source button is operated according to this count value (screen transition counter) This is different from the third embodiment.

FIG. 30 is an explanatory diagram illustrating a configuration example of a screen transition table according to the sixth embodiment.
30, a screen transition counter corresponding to the transition source information 1, 2,... Is added to the configuration of the screen transition table shown in FIG.
In FIG. 30, for example, for the information group 8, the transition source information 1 is “000001” (information group 1), the information display text of the transition source information 1 is “ΔΔΔ center”, and the screen transition counter of the transition source information 1 is It is registered that “1”, the transition source information 2 is “000002” (information group 2), the information display text of the transition source information 2 is “meal information”, and the screen transition counter of the transition source information 2 is “4”. Has been. That is, the information group 8 tends to be reproduced and changed from the information group 2 to the information group 1.

Here, information other than the transition source information is registered in step S147 of FIG. On the other hand, the transition source information is registered in step S109 (detailed in FIGS. 9 and 10) in FIG.
The screen transition counter corresponding to the transition source information is initially set to “0” when the information group is registered in the screen transition table, and is replayed every time the transition destination button is operated in the normal transition processing 3 described later. One is added.

FIG. 31 is a flowchart illustrating an example of a reception process (reception process 2) according to the sixth embodiment.
As shown in FIG. 31, in the reception process 2 according to the sixth embodiment, the process of step S148 is added to the reception process 1 shown in FIG. When the information group is registered in the screen transition table by the process of step S148, the screen transition counter is set to “0”.
The other processes of the reception process 2 are the same as the reception process 1 shown in FIG.

  The display control process according to the sixth embodiment is different from the process described in the third embodiment in the normal transition process and the special transition process. Therefore, in the sixth embodiment, when the reproduction process 1 shown in FIG. 13 is executed, for example, the reproduction screen shown in FIG. 22 is displayed on the display of the output unit 545 (similar to the third embodiment). Then, on the playback screen shown in FIG. 22, the user performs the transition transition of the information group by operating the transition source button B3.

In the sixth embodiment, the normal transition process in step S223 in FIG. 14 is performed according to the flowchart in FIG.
In FIG. 32, in step S321, an information group corresponding to the operated button number is referred to.
In step S322, 1 is added to the screen transition counter corresponding to the transition source information in which the currently reproduced information group is registered among the transition source information of the information group referred to in step S321. For example, in the playback screen of information group 1 in the screen transition table shown in FIG. 30, when information group 8 is selected as the transition destination and playback transition is made, 1 is added to the screen transition counter of transition source information 1 of information group 8 .

In step S323, the reproduction process 1 shown in FIG. 13 is performed. That is, the information group referred to in step S301 is reproduced and a transition source button is displayed.
That is, when the reproduction transition (normal transition) from the upper layer information group (second content) to the lower layer information group (first content) is performed based on the next reproduction information code, the control unit 51 One of the screen transition counters corresponding to the transition source information in which the information group being reproduced is registered is added to the transition source information of the information group in the lower hierarchy.

In the sixth embodiment, the special transition process in step S224 in FIG. 14 is performed according to the flowchart in FIG.
In step S331, it is determined whether or not the transition source information of the screen transition table is registered for the information group being reproduced. When it is determined that the transition source information is registered, the process proceeds to step S332, and when it is determined that the transition source information is not registered, the special transition process is terminated.

In step S332, it is determined whether or not there is one information group having the maximum screen transition counter value. If it is determined that there is one information group having the largest screen transition counter value, the process proceeds to step S333. If it is determined that there is not one information group, the process proceeds to step S335.
In step S333, the information group registered in the transition source information having the maximum screen transition counter value is referred to. For example, in the screen transition table shown in FIG. 30, the information group 2 is referred to for the information group 8 because the screen transition counter value of the transition source information 2 is the maximum.

In step S334, the reproduction process 1 shown in FIG. 13 is performed. That is, when the operation signal is input from the transition source button on the playback screen of the lower layer information group (first content), the control unit 51 determines the number of times of playback transition using the lower layer information group as the transition destination. The reproduction screen of the information group (second content) of the highest hierarchy is displayed on the display (display unit) of the output unit 545.
In step S315, the special transition process 3 shown in FIG. 23 is performed.

Thus, in the sixth embodiment, the information group display control process is performed according to the flowcharts of FIGS. 12 to 14, 32, and 33.
According to the vehicle-mounted device 5 of the sixth embodiment, even when a plurality of information groups are registered as the transition source information, the user designates the transition destination in the past as a transition destination on the playback screen of the upper hierarchy information group, and the lower hierarchy If the transition to the information group is performed and the tendency is biased, when the transition source button is operated on the playback screen of the information group in the lower hierarchy, the upper hierarchy that is the frequency of the transition source is high. Since the information group is automatically reproduced, the user does not need to select the information group to be reproduced and changed. In addition, since the reproduction transition reflects the reproduction tendency of the user, there is little possibility that a problem occurs when the reproduction transition is automatically performed.

As mentioned above, although the invention made by this inventor was concretely demonstrated based on embodiment, this invention is not limited to the said embodiment, It can change in the range which does not deviate from the summary.
For example, the information group display control processing described in the first to sixth embodiments can be used in appropriate combination.
In the above embodiment, the operation unit (transition destination button, transition source button) for performing the reproduction transition of the information group is configured by so-called soft keys that are displayed on the display of the output unit 545. It may be configured with hard keys, and information associated with the hard keys may be displayed in an area close to the hard keys in the display.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

It is explanatory drawing which shows the system configuration | structure of the road-vehicle communication system 100 which concerns on this embodiment. 2 is a block diagram showing an internal configuration of a center device 1 and a roadside wireless device 2. FIG. It is explanatory drawing of the roadside area Z which is the communicable range of the roadside apparatus. FIG. 3 is a block diagram illustrating a configuration example of the vehicle-mounted device 5 mounted on the vehicle C. It is explanatory drawing shown about an example of the data structure of the content delivered from the center apparatus. It is explanatory drawing which shows an example of the detailed content of each element which comprises an information group. It is explanatory drawing which shows the structural example of the screen transition table which concerns on 1st Embodiment. It is a flowchart shown about an example of the reception process (reception process 1) which concerns on 1st Embodiment. It is a flowchart shown about an example of a transition source information confirmation process. It is a flowchart shown about an example of a transition source information registration process. It is explanatory drawing shown about an example of the priority rule at the time of registering transition source information in 1st Embodiment. It is a flowchart shown about an example of a display control process. It is a flowchart shown about an example of the reproduction | regeneration processing (reproduction | regeneration processing 1) which concerns on 1st Embodiment. It is a flowchart shown about an example of a screen transition process. It is a flowchart shown about an example of the normal transition process (normal transition process 1) which concerns on 1st Embodiment. It is a flowchart shown about an example of the special transition process (special transition process 1) which concerns on 1st Embodiment. It is explanatory drawing which shows an example of the reproduction screen of the information group which concerns on 1st Embodiment. It is explanatory drawing which shows the structural example of the screen transition table which concerns on 2nd Embodiment. It is a flowchart shown about an example of the reproduction | regeneration processing (reproduction | regeneration processing 2) which concerns on 2nd Embodiment. It is a flowchart shown about an example of the special transition process (special transition process 2) which concerns on 2nd Embodiment. It is explanatory drawing which shows an example of the reproduction screen of the information group which concerns on 2nd Embodiment. It is explanatory drawing which shows an example of the reproduction screen of the information group which concerns on 3rd Embodiment. It is a flowchart shown about an example of the special transition process (special transition process 3) which concerns on 3rd Embodiment. It is explanatory drawing which shows an example of the reproduction screen (during special transition process) of the information group which concerns on 3rd Embodiment. It is explanatory drawing which shows the structural example of the screen transition table which concerns on 4th Embodiment. It is a flowchart shown about an example of the special transition process (special transition process 4) which concerns on 4th Embodiment. It is explanatory drawing which shows the structural example of the screen transition table which concerns on 5th Embodiment. It is a flowchart shown about an example of the normal transition process (normal transition process 2) which concerns on 5th Embodiment. It is a flowchart shown about an example of the special transition process (special transition process 5) which concerns on 5th Embodiment. It is explanatory drawing which shows the structural example of the screen transition table which concerns on 6th Embodiment. It is a flowchart which shows an example of the reception process (reception process 2) which concerns on 6th Embodiment. It is a flowchart shown about an example of the normal transition process (normal transition process 3) which concerns on 6th Embodiment. It is a flowchart shown about an example of the special transition process (special transition process 6) which concerns on 6th Embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Center apparatus 2 Roadside radio apparatus 5 Onboard equipment 51 Control part 52 DSRC part 53 VICS module 54 Car navigation part 541 Car navigation control part 545 Output part 546 Storage part 100 Road-to-vehicle communication system C Vehicle N network

Claims (7)

A communication unit that performs wireless communication with the center device via the roadside wireless device;
A storage unit for storing content distributed from the center device;
A display unit for displaying a playback screen of content stored in the storage unit;
An operation unit for transitioning the playback screen;
A control unit that performs display control of a content playback screen in the display unit,
The control unit displays a reproduction screen of the first content on the display unit, and displays a reproduction screen of the second content that can be a transition source of the first content when an operation signal is input from the operation unit. A vehicle-mounted device that is displayed on a display unit. When there are a plurality of second contents that can be a transition source for one first content,
2. The control unit according to claim 1, wherein the control unit selects one content that is prioritized according to a predetermined condition from the plurality of second contents, and sets the selected content as a transition source of the first content. Onboard equipment. When there are a plurality of second contents that can be a transition source for one first content,
A plurality of the operation units are provided corresponding to the plurality of second contents on the reproduction screen of the first contents,
2. The vehicle-mounted device according to claim 1, wherein when the operation signal is input from any of the plurality of operation units, the control unit causes the display unit to display a reproduction screen of the corresponding second content. vessel. When there are a plurality of second contents that can be a transition source for one first content,
The control unit displays a list of the plurality of second contents on the display unit when the operation signal is input from the operation unit on the reproduction screen of the first content, and is selected in the list The on-vehicle device according to claim 1, wherein a reproduction screen of the second content is displayed on the display unit. The control unit sets on a selection flag of the second content selected in the list,
When the operation signal is input from the operation unit on the first content reproduction screen, the second content reproduction screen in which the selection flag is set on is displayed on the display unit. The vehicle-mounted device according to claim 4. The content includes a next playback information code indicating the content that is the transition destination of the content,
The on-board device according to any one of claims 1 to 5, wherein the control unit sets content that can be the transition source based on the next reproduction information code. When the reproduction transition from the second content to the first content is performed based on the next reproduction information code, the control unit sets the transition-source second content as the transition history of the first content,
The display screen of the second content set in the transition history is displayed on the display unit when an operation signal is input from the operation unit on the playback screen of the first content. 6. The vehicle-mounted device according to 6.

Images