Source: http://www.google.com/patents/US6978152?ie=ISO-8859-1&dq=patent:6144888
Timestamp: 2014-07-14 01:27:14
Document Index: 416845492

Matched Legal Cases: ['art 102', 'art 102', 'art 133', 'art 147', 'art 132', 'art 132', 'art 131', 'art 146', 'art 146', 'art 146', 'art 143', 'art 146', 'art 142', 'art 146', 'art 146', 'art 146', 'art 147', 'art 147', 'art 146', 'art 146', 'art 502', 'art 142', 'art 146', 'art 146', 'art 146', 'art 142', 'art 146', 'art 146', 'art 147']

Patent US6978152 - Digital broadcasting system for providing program and data to a vehicle - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign in<nobr>Advanced Patent Search</nobr>PatentsOrdinary data groups and index information indicating data names and memory locations of broadcasted data are transmitted in multiplex mode from the data broadcasting station 101, and received by the onboard terminal 103 and/or the information service station 104 through the data distribution part 102....http://www.google.com/patents/US6978152?utm_source=gb-gplus-sharePatent US6978152 - Digital broadcasting system for providing program and data to a vehicleAdvanced Patent SearchPublication numberUS6978152 B1Publication typeGrantApplication numberUS 09/635,449Publication dateDec 20, 2005Filing dateAug 10, 2000Priority dateAug 11, 1999Fee statusPaidAlso published asCA2315956A1, EP1076431A2, EP1076431A3Publication number09635449, 635449, US 6978152 B1, US 6978152B1, US-B1-6978152, US6978152 B1, US6978152B1InventorsKimiya Yamaashi, Masato Horita, Yukihiro KawamataOriginal AssigneeHitachi, Ltd.Export CitationBiBTeX, EndNote, RefManPatent Citations (16), Referenced by (20), Classifications (41), Legal Events (3) External Links: USPTO, USPTO Assignment, EspacenetDigital broadcasting system for providing program and data to a vehicleUS 6978152 B1Abstract Ordinary data groups and index information indicating data names and memory locations of broadcasted data are transmitted in multiplex mode from the data broadcasting station 101, and received by the onboard terminal 103 and/or the information service station 104 through the data distribution part 102. The onboard terminal 103 detects the information which it does not hold by referring to the index information, and presents a list of data names at the onboard display part 133. The service station 104 stores separately the data groups and the index information provided from the broadcasting station 101, and in response to the download request from the onboard 103, it examines whether the required data is located in SS memory part 147 by referring to the index data, and captures the required data from external memory locations defined in the index information if the required data is not stored.
BACKGROUND OF THE INVENTION The present invention relates to a digital broadcasting system for providing the program and data to the mobile station on a vehicle with digital broadcasting, and to an information service station and a mobile terminal for storing and distributing the program and its related data which the mobile object can not received.
SUMMARY OF THE INVENTION The present invention provides a digital broadcasting system and a mobile terminal allowing to revise software and its versions easily at the mobile terminal by using a multiplex data broadcasting, and provides an information service station for storing data by relaying the digital broadcasting contents and for distributing the mobile terminal requesting those contents.
In case that the digital broadcasting receiver is an information relay apparatus (hereinafter referred to as �information service station�), the information relay apparatus has a data receive means for receiving the digital broadcasting contents, a data memory means for storing the ordinary data and the index data separately among the received data group, an input means for accepting a download request, a data management means for referring to an index data corresponding to the requested data in case that the data memory means does not contain the requested data, and directing the requested data to be retrieved from the remote memory location specified by the index data, and a distribution means for transmitting the download data to the requester. In addition, the apparatus has also a security management means for encrypting the download data by using a cipher key obtained from the requester.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic diagram of a mobile information service system of one embodiment of the present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Now, the preferred embodiment of the present invention is described in detail by referring to the attached figures. It is difficult for users to obtain their necessary data and programs at their preferential time from the data distribution part with the onboard terminal in the prior art. In order to solve this problem, there is such a solution that the data distribution part is so configured as to enable to communicate interactively with the onboard terminal and accept requests from the onboard terminal. There are 10000000 or more vehicles in Japan, and thus, it is difficult to broadcast massive data to the individual vehicles simultaneously. Though it is possible in practice to make the onboard terminal connect to the Internet through PDC interface of cellular phone systems and download data, it is not easy for public users to install data and programs, and revise their versions.
FIG. 4 illustrates an example of the screen image of the onboard terminal. In responding to the user's selection of the data tabulation button 414 from the onboard input part 132 of the onboard terminal 103, a data table 415 including a data broadcasting menu as shown in FIG. 4 is displayed. When the data tabulation button 414 of the onboard input part 132 is selected by the user, the onboard control part 131 searches the onboard data management table 301, and recognizes the individual data status (for data No 321 judged from data No. 221, for name 322 judged from data name 222, for broadcast time 326 judged from broadcast time 226, and whether the individual data is already downloaded or not judged with local 324 being NIL or not, respectively), and then displays the data table 415 shown in FIG. 4. The data already downloaded and the data not downloaded yet are classified with their status �settled� or �unsettled�, which can be recognized explicitly by the user. With this representation, the user can understand what data has been downloaded and what data has not been downloaded yet.
At the top menu (2), a selection menu including �install new software�, �version-up� and soon is displayed. In addition, recommendation announces to the user may be displayed. In order to prepare those display contents, SS control part 146 refers to the registered data-management table 603 representing the contents of programs and data groups stored in the IC card (403) and currently downloaded in the onboard terminal 103. the source data No. 2211 and the revision No. 2212 are obtained in the data No. 321 on the registered data management table. In order to judge whether there is any data with its version being able to be upgraded found in the data in the onboard terminal 103, SS data management table 501 in the information service station 104 is searched by using the individual source data No. 2211 for the search key. If there found a new data in SS data management table 501 with its version higher than the version of the data in the onboard terminal 103, the information indicating that �the version of program is upgraded� in the onboard terminal 103 is displayed and the user is advised to download its new version.
When the user touches the menu indicating �new software installation� on the top menu (2) with his or her finger, the coordinate of the position at which he or her specifies on the touch panel 433 at SS input 142 is captured. SS control part 146 judges from the input coordinate that the menu indicating �new software installation� is selected, and a new software installation screen (3) is displayed in the following procedure.
In case that a comment 527 is stored for the latest version for the source data No. 2211 in SS data management table 501, SS control part 146 displays its comment on the comment field on the screen (3). In the illustrated example, a comment indicating �3D image generation� is displayed on the comment field for �Navigation 1� as the first software.
The user can select his or her necessary software only by touching the title of the software on the new software installation screen (3), that is, through the touch screen 443 on SS display part 143. SS control part 146 identifies the software to be installed on the basis of the position on which the user touch. For example, in case of the screen (3), it is assumed that the user selects the title of �Navigation 1�. As a matter of course, the user is allowed to select plural titles of software. When the user selects plural titles of software and presses �OK� button, SS input part 142 recognizes from the position on the touch panel that the user presses �OK� button, and displays a list of selected titles of software as shown in the download start screen (5).
In order to display the screen (5), SS control part 146 searches SS data management table 501 with the title of software selected by the user, and calculates the individual download charge for the individual software and their total charge by the above described method. In the illustrated example, �navigation 1 is �3,000�, �WWW is �100� and those total charge is �3,100 is displayed on SS display part 146. When the user selects �Download� button, a download-on-go screen (6) is displayed next.
When the user selects �Download� button on the screen (5), SS control part 146 refers to SS data management table 501, and obtains the memory locations for designated software (for example, �Navigation 1� and �WWW�.) At this time, in case that the memory location is already stored in SS memory part 147, the local memory location 524 can be obtained. On the other hand, in case that the memory location has not stored yet in SS memory part 147 or that the program content has not broadcasted yet, the local memory location can not obtained, and hence, SS control part 146 can obtain the remote memory location 523 broadcasted as the index information 202. In case that there is an information to be downloaded at the local memory location 524, SS control part 146 extracts an information to be downloaded from a designated location (with a designated file name) at SS data memory part 502.
In case that the user select �Version Upgrade� on the top menu (2) shown in FIG. 8 with his or her finger, SS input part 142 captures the coordinate of the input position on the touch panel 443. SS control part 146 judges from the input coordinate that the menu indicating �Version Upgrade� is selected, and a version-up screen (4) is displayed in the following procedure.
As shown in the screen (4), the program name, the version number and the charge of the data as candidates for version upgrade. In addition, in case that a comment 527 is stored for the latest version for the source data No. 2211 in SS data management table 501, SS control part 146 displays its comment on the comment field. For example, a comment indicating �3D image generation� is displayed on the comment field for �Navigation 1� as the first software.
The user can select his or her necessary software only by touching the title of the software on the version upgrade screen (4). SS control part 146 identifies the software to be installed on the basis of the position on which the user touch. For example, in case of the screen (4), it is assumed that the user selects the titles of �Navigation 1� and �WWW�. As a matter of course, the user is allowed to select plural titles of software. When the user selects plural titles of software and presses �OK� button, SS input part 142 recognizes from the position on the touch panel that the user presses �OK� button, and displays a list of selected titles of software as shown in the screen (5). Later screen operations (5) to (7) and the operation of the service station 104 are the same as those in case for installing new software.
SS control part 146 searches SS data management table 501 by the title of the software the user selects, and calculates the download charge of the individual software and the total charge by using the method described above. And then, an information indicating such a user's selection defined as �Navigation 1 is �3000�1, �WWW is �100� and the total charge is �3100 is encrypted with the public key of the onboard terminal and transmitted to the onboard terminal 103.
And further more, when the information service station 104 receives the request for download from the onboard terminal 103, SS control part 146 refers to SS data management table 501 and obtains the memory locations for the software corresponding to be downloaded (for example, �Navigation 1� and �WWW�.) A this time, in case that the software to be downloaded is already stored in SS memory part 147, the local memory position 524 can be obtained. In case that the local memory position 524 can not be obtained, the remote memory position 523 broadcasted as index information 202 can be obtained.
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