JPH08251054A - Receiving and reproducing broadcasting receiver of digitally encoded traffic information - Google Patents

Abstract

PROBLEM TO BE SOLVED: To use the receiver in various different areas by deriving reproduced data from decoded traffic information and storing a replaceable data carrier with data regarding a location needed to derive the reproduced data. SOLUTION: A microcomputer 11 is connected to a memory 12, wherein data regarding events, data regarding words, and algorithm are filed. Further, a read device is connected to the computer 11 and in which it is connected to a memory 14 through an interface 16 on a chip card 15. A digital sound signal is supplied to an audio amplifier 4 through a D/A converter 17. Other traffic information, e.g. a selection system for the traffic information is displayed by using a display device 18. The memory 14 is composed of a read-only memory(ROM) or a nonvolatile memory which can be written at each time. Consequently, new data can be written at the time of modification to an area of interest.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a broadcast receiver for receiving and reproducing digitally coded traffic information including location data and event data.

[0002]

2. Description of the Related Art The Radio Data System (RDS) allows inaudible additional transmission of digital data in parallel with a broadcast program in one data channel.
The specialization of the radio data system for FM radio broadcasting is notably described in the European Broadcast Union (EBU) document "Tech. 3244-E, Maerz, 1984".
Stipulated in. A broadcast receiver with a suitable RDS decoder additionally receives and decodes the transmitted data by the same receiver in addition to the broadcast reception. Data transmission is performed in 32 groups of 108 bits each. In this case, a predetermined service is assigned to each group. For example, the group 8a is provided for the transmission of digitally coded traffic information.

The structure and coding of such traffic information are described in the publicly known document "RDS ATT ALERT Consortium, Normvorschlag ALE".
RT C, November 1990, ”. In this case, the main elements of traffic information are the location (location) and the event (event, content of the event) of the event. A unique code is assigned to each location and event that is important to the traffic, location linkages in the location table along the existing roads reproduce the course.
In addition to the usual device of the receiving device equipped with the RDS decoder, a device for decoding, a device for storing, a device for continuous processing, and a device for continuously processing traffic information for use of the traffic information channel TMC (Traffic Message Channel) A device for transmission is required.

Only a small amount of information can be transmitted due to the limited amount of data of 108 bits per normal traffic information. From this small amount of information, the traffic information is decoded using a relatively large capacity table in the receiver and processed for transmission. This table contains data about locations and events. Therefore, for decoding digitally coded traffic information, location codes, location types (dotted areas, road sections, etc.), criteria for preceding points, criteria for subsequent points, and other data are especially required. Becomes

For the transmission of traffic information, further data on the location, such as the type of the road and possibly the proper name of the road, the place name, the second place name of the place and possibly the geographical coordinates, etc. is necessary.

Therefore, the digitally coded traffic information can only be decoded if the location code and the associated data are present in the list of receivers. Therefore, a very large data capacity is required to combine all traffic information and make it reproducible. This increase in capacity is even more necessary the larger the area detected by the uniformly standardized system (eg in most parts of Europe).

[0007]

SUMMARY OF THE INVENTION The object of the present invention is to use broadcast receivers in various different areas without storing the data necessary for decoding and reproduction for all theoretical operating areas. It is an object of the present invention to provide a broadcast receiver which receives and reproduces such digitally encoded traffic information.

[0008]

SUMMARY OF THE INVENTION According to the present invention, the above-mentioned problem is that the received digitally coded traffic information can be supplied to a device for decoding the traffic information, and the location required for the decoding of the traffic information can be obtained. The data relating to (location) is stored on an exchangeable data carrier, the reproduction data can be derived from the traffic information to be decoded, and further data relating to the location (location) necessary for deriving the reproduction data can be exchanged. Stored on a separate data carrier and the playback data is configured and resolved such that it can be supplied to the playback device.

The broadcast receiver according to the invention can be used in various countries for the reception and reproduction of digitally coded traffic information. In this case, only data carriers containing the data of the relevant country are used. The data carrier can be embodied in the form of a conventional chip card or other memory card (eg ISO-7816 standard). The broadcast receiver according to the present invention further has the following advantages. In other words, there is an advantage that it is possible to carry out the change without cost when changing the data related to the location (for example, due to new construction such as roads and high-speed junctions).

In the broadcast receiver according to the present invention, audio output,
Data reproduction such as character display and graphic display is performed on the map card. With regard to voice output and character display, it is possible to reproduce from various languages without depending on the respective running areas, by appropriate memory and appropriate selection.

In an advantageous embodiment according to the invention, the algorithms required for decoding traffic information and deriving reproduced data,
Data about the event is filed in memory within the broadcast receiver. The storage of these data in the broadcast receiver leads to a reduction of the required memory space on the exchangeable data carrier, although no realization of these data themselves or adaptation to different countries or geographical areas is required.

The exchangeable data carrier for the broadcast receiver according to the invention can be constructed as follows. In other words, the data regarding the location and the data regarding the further location can be configured to be filed in the fixed value memory. However, it is also possible to configure such that the data regarding the location and the data regarding the further location are filed in the writable non-volatile memory. According to it, the chip card obtained once is dropped and put into practice.

Despite the day-to-day advances in memory density, the memory capacity of a replaceable memory has a limited amount of usage time, which is also expensive. I am not interested in decrypting all traffic information on a national scale, which is often the case for users, especially drivers who do not drive long distances. On the other hand, according to another embodiment of the exchangeable data carrier according to the present invention, the data stored in the memory corresponds to a geographical area offset from the border that divides the databank for the location. To do.

For the decoding and derivation of the reproduction data, it is advantageous for each location to have at least one location code, a location type, an adjoining location criterion, and a road section belonging to a point-like location. And a country database code for said code, road name, road information, additional information about location type, place name and possibly further place names are stored on the exchangeable data carrier. There is.

In this case, the map type display can be performed by storing the geographical coordinates regarding the location.

The first write or rewrite of the exchangeable data carrier is queried for data from a central data bank containing data that embodies a plurality of regions, selected by an input indicating the selected region and selected. This data is written in the memory of the exchangeable data carrier. This central data bank contains, for example, a list of locations throughout Europe. By inputting a selected area via the select menu, a data carrier can be established which enables the decoding and reproduction of traffic information in the areas belonging to multiple countries where the driver frequently runs.

According to another advantageous embodiment of the exchangeable data carrier, a particularly good use of the existing memory capacity is possible by: That is, for each location data, one or more identifiers other than the data required for decoding are filed in the first table stored on the exchangeable data carrier, each of which contains 1
For each identifier, this is made possible by filing the corresponding data about the location in a second table stored on the exchangeable data carrier. These preferably include at least one place name. In that case, it is particularly advantageous if the place names occurring only once are filed directly in the first table.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION Next, the present invention will be described in detail with reference to the drawings.

An embodiment of the present invention is shown in a block circuit diagram. However, this does not mean that the present invention is limited to the configuration using the circuits corresponding to the individual blocks in the drawing. On the contrary, the broadcast receiver according to the invention can be realized in a very advantageous way with highly integrated circuits. In this case, a digital signal processor can be used. This processor performs the processing steps shown in the block schematics under appropriate programming.

FIG. 1 shows some components of a broadcast receiver necessary for explaining the present invention, and a portion surrounded by a broken line is used for carrying out the method according to the present invention. It is a group of components. The signal to be received is supplied to the receiving unit 2 via the antenna 1. An RDS recorder 3 and an audio amplifier 4 having a speaker 5 are connected to the output side of the receiver 2.

The decoding and reproduction of the digitally coded traffic information is controlled by the microcomputer 11. The microcomputer 11 is connected to the memory 12. The memory 12 stores data on events (events), data on languages, and algorithms. RDS for the microcomputer 11
The output signal of the decoder 3 can be supplied. Further, the microcomputer 11 is connected to a card writing / reading device via an interface 13. This device is not specifically shown in FIG. Within the reader, a connection is made to the on-chip memory 14 via the on-chip interface 16.

In the illustrated embodiment, a voice output section for synthesizing digital voice signals is provided in the microcomputer 11. This digital audio signal is supplied to the audio amplifier 4 via the digital / analog converter 17. In addition, traffic information and further information, for example, a method of selecting traffic information is displayed using the display device 18 (display). The display device 18 is connected to the microcomputer 19 via a display driver 19.

The memory 14 is a read-only memory (RO
M) (in which case the user has to get a new chip card in case of change) and a non-volatile write that can be newly written each time
It may also consist of a read memory. This non-volatile write / read memory is capable of writing new data upon a change of location-related data or to an area of interest to the user.

The location and event codes transmitted with the digitally encoded traffic information are language independent. Therefore, for example, the code 101 represents the occurrence of traffic jam, and the code 4711 represents the place name Cologne, for example. Therefore, in the decoding tables of the memories 14 and 12, a representative of the language corresponding to the code is stored. Events are language-dependent and country-independent. This is because events are standardized uniformly throughout Europe (eg 101 =
Traffic jam = traffic jam). Place names also depend on the country. This means that one location code in France represents another place name in Germany with the same code. Place names are distinguished by country identifiers transmitted separately in the radio data system.

The data stored in the memory 14 of the chip card 15 is divided according to the viewpoint of decoding and reproducing traffic information. The data required to decrypt the traffic information is summarized in the table below. In this case, LOC. Is the location.

Data explanation example Loc.-Code Transmitted numerical code 1,2, ... 2000 Loc.-Type Type of area to be written Point, area, road section Offset + LOC.-Code of preceding point Loc.-Code of preceding highway Criteria for the road or section along the road Offset-Loc. Of the following point-Code Criteria for the following highway or section along the junction of the road RefL Point Loc. → Standard Loc.-Code → Assigned road section RefA Point Loc. → Standard Loc.-Code → Affiliation area Country-Code / 1 / Country code Specify which country in Europe in Loc.-Code.

DB-Code Database Nr./1/ Defines Loc.Tabell's Nr. For corresponding countries With this information, the information coded according to the ALERT-Standard can be decoded. At the time of coding, the following is evaluated based on, for example, a location code, data related to the scale and direction of an event (for example, congestion length of 20 km). That is, for example, the corresponding highway, the section of the corresponding highway by the direction data, the two junctions of the section in which the traffic jam is occurring, and the place where this event itself is confirmed are evaluated. For example, the following information is available.

"Congestion occurs between Hildesheim-Latzen in the Kassel / Hanova direction on Expressway No. 7" In this case, the location code "Hildesheim" and data regarding the scale and direction are received in the digitally encoded traffic information. , Further data in the table is retrieved.

However, after the decoding described above, this information is still in code. The transfer of this information involves conversion into written or spoken text. On the other hand, the microcomputer 11 accesses the following list similarly stored in the memory 14.

Data description example Roaddescription Road type A1 = Expressway No. 1, A5 (M1) Roadname Road specific name Cologne link road Loc-Sub-Type High-speed junction for Loc.-Type, additional description Three-way road Name1 Hildesheim Drispenstette Name2 Second place name Only for road section (end point) Koordinate Degrees and minutes for map display (geographical length and width) Geographical coordinate data The data obtained by this is used for optical or acoustic traffic information transmission. Used. In some cases, the coordinates are also used to display the map.

As mentioned above, each location
Is uniquely defined by a country code (Country Code), a database number, a location code (Loc.-Code), and its standard. The location list (which is addressed by the database number) is made up of the inclusion of locations.

The chip card can basically contain part of various location lists. This makes it possible to form individual cards. In this case, the contents of the chip card are determined during the manufacture of the chip card and filed in the fixed value memory of the chip card.

According to the present invention, a chip card having a writable memory can be selectively used. This card is either written with a data set by the manufacturer or sold without content. In this case, a special service person writes new data on the chip card. An embodiment of the device for it is shown schematically in FIG. In the computer 21, all data necessary for editing the location list is stored and managed. Realization is possible by data transmission to the central processing unit. This central processing unit manages all location lists (possibly by country). The desired selection is made using the operating unit 23. In this case, the operation is performed by inputting based on the selection menu. The selected data is transferred to the programming station 2 for writing the selected data into the memory of the chip card 15.
4 is supplied.

FIG. 3 shows only a part of the broadcast receiver necessary for explaining the present invention and its function. The traffic information processing device 31 is supplied with the signal of group 8a from the RDS decoder not shown in the figure at 32. According to the ALERT-Standard mentioned above, this data essentially contains data on the location, type, expected duration, magnitude and direction of the event. These data are decoded and selected in a device 31, which is preferably implemented in the form of a microcomputer or digital signal processor. This selection is input unit 3
Corresponding to the selection criteria supplied via 3. Thereby, for example, only the traffic information corresponding to the road section in the input direction is reproduced.

Data already stored in the location list 35 is necessary for decoding the traffic information (for example, a place name and a region along a road located next to the above-mentioned place in the traffic information). Attributes, etc.). This data and further data are filed in a location list on the chip card 34 and can be read like any other subsequently written information using a reading device provided in the receiver. In the illustrated example, it can be seen that the location number 4711 belongs to the area 2009, and the adjacent locations are 4710 and 4712. In addition, the location list 35 includes an identifier. This identifier is used to read the place name and other codes from the table. For example, identifier 15
Represents the word “Cologne” and the identifier 81 represents the word “North”. A significant savings in memory space is achieved by using an identifier, which preferably has a constant position number, and the traffic information thus decoded is supplied to the device 36 for speech synthesis. The output signal of the device 36 is supplied to the speaker 5 via the digital / analog converter 17 and the audio amplifier 4. This device 36 is also preferably implemented using a digital signal processor. A program 37 can be used for this device 36. Data necessary for voice synthesis is supplied from a table 38 stored on the chip card 34, an event set list 42, a carrier list 43, and a segment list 44. Speech synthesis is performed in the languages prepared in the event set list 42, the carrier list 43, and the segment list 44. The voice synthesis method itself is known. Particularly, a method suitable for outputting coded traffic information is a patent application “Method and apparatus for outputting digitally coded traffic information using a synthetically generated language” filed concurrently with the present invention. In the specification.

In the table 38, in addition to the location code, there is also a number associated with the connector location 15, for example. Since it is of course important to hear the number of the connector location in the language in which the rest of the message is transmitted, the number 15 is filed in table 38 as the number. Segment list 44 for voice synthesis
Access is made to a special part in which the pronunciation data of the number in each language of the recipient is stored. Further, in the table 38, there are place names in a normal typeface. Thereby, the chip card 34 can also be used to optically convey the conversation message.

[Brief description of drawings]

FIG. 1 is a block circuit diagram of a broadcast receiver according to the present invention.

FIG. 2 is a schematic diagram for explaining a replaceable data carrier.

FIG. 3 is another block circuit diagram of a broadcast receiver according to the present invention having a chip card containing a location list.

[Explanation of symbols]

 1 Antenna 2 Receiver 3 RDS Decoder 4 Audio Amplifier 5 Speaker 11 Microcomputer 12 Memory 13 Interface 14 ROM Memory 15 Chip Card 16 Interface 17 Digital / Analog Converter 18 Display 21 Computer 23 Operation Unit 38 Table

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Dietmar Kjell Germany Dijk Holzen Steinkamp 5

Claims (10)

[Claims] 1. A broadcasting receiver which receives and reproduces digitally coded traffic information including location data and event data, wherein the received digitally coded traffic information is traffic information. Can be supplied to a device for decoding traffic, and the data related to the location (location) necessary for decoding the traffic information is stored on an exchangeable data carrier, and the reproduced data can be derived from the traffic information to be decoded. And the further location data necessary for deriving the reproduction data is stored on an exchangeable data carrier, the reproduction data being able to be supplied to the reproduction device, digitally encoded traffic information. A broadcast receiver that receives and plays. 2. The digitally encoded traffic according to claim 1, wherein the algorithm required for decoding the traffic information and deriving the reproduction data and the data regarding the event are stored in the memory in the broadcast receiver. A broadcast receiver that receives and plays back information. 3. Exchangeable data carrier for broadcast receivers according to claim 1 or 2, characterized in that the data relating to the location and the data relating to the further location are filed in a fixed value memory. 4. A replaceable data carrier for a broadcast receiver as claimed in claim 1 or 2, wherein the location-related data and the further location-related data are filed in a writable non-volatile memory. 5. The exchangeable data carrier according to claim 3, wherein the data filed in the memory corresponds to a geographical region offset from the border that divides the databank for the location. 6. At least one location code for each location, a location type, a criterion on an adjacent location, a criterion of a belonging road section in a dot-like location, a country code, and a country related to the code. 6. The exchangeable data according to any one of claims 3 to 5, wherein a code of a database of, a road name, road information, additional information regarding a location type, a place name, and possibly a further place name are stored. Career. 7. The data carrier according to claim 6, further comprising geographical coordinates relating to the location. 8. Inquiring data from a central data bank containing data to be actualized for each of a plurality of areas, making a selection by an input indicating a selected area, and writing the selected data in a memory of an exchangeable data carrier. 8. A method for storing location-related data and further location-related data on an exchangeable data carrier according to any one of claims 3 to 7. 9. For each location data, in a first table stored on the exchangeable data carrier, one or more identifiers other than the data required for decoding are filed, one for each location data. Exchangeable data carrier for a broadcast receiver according to claim 1 or 2, wherein for each identifier, the second table stored on the exchangeable data carrier is filed with location-related data. 10. The exchangeable data carrier of claim 9, wherein the further data regarding the location comprises at least one place name.