DE102007002941A1 - A method and apparatus for communicating data of a message and method and apparatus for receiving and storing data of the message - Google Patents

Abstract

For transmitting data (DATA) of a message (MES) whose content relates to a given geographic area (GEO), a data stream (STREAM) is transmitted by means of a data transmission system. The data stream (STREAM) comprises several data groups (2). In a first data group (2), a predetermined identifier is sent, which is associated with a second data group (2) comprising the data (DATA) of the message (MES). Furthermore, the given identifier is representative of the given geographic area (GEO) and for a given application. The given application is designed on the receiver side for processing the data (DATA) of the message (MES) and for outputting the message (MES). The data (DATA) of the message (MES) are transmitted in at least the second data group (2).

Description

The The invention relates to a method and a device for transmitting of data of a message. The content of the message relates to a given geographical area. The data is transmitted by a data transmission system transmitted. there a data stream containing several groups of data is sent. Furthermore, the invention relates to a method and a device for receiving and storing the data of the message. It will receive the data stream comprising the multiple data groups.

through of the data transmission system can Data about size Transfer distances become. For this purpose, the data transmission system preferably uses a digital radio data service. The data transmission system For example, RDS (Radio Data System), TPEG (Transport Protocol Experts Group ") and / or DAB ("Digital Audio Broadcasting "), be. The radio data service is preferably TMC ("Traffic Message Channel"). The data may alternatively or additionally be sent to a normal program, via the data transmission system is broadcast.

For example by means of the radio data system, a radio station via a Transmitter additionally send data to a radio program of the radio station. In contrast to the radio program, the transmitted data from the receiving device and / or from one to a receiver coupled device, For example, a car radio, not converted into audible audio signals. The data is preferably digital and includes, for example information about the radio station, information about the current frequency at which the current radio program is broadcast will, one or more Zu record frequencies on which the same Radio program can be received, a kind of the currently broadcast Radio program, current traffic and / or travel information and / or other important news.

The Data transmission system transmits the Data according to a predetermined transmission protocol, which is set in a standard and that of each sender of Data must be respected. If the corresponding station is not adheres to the given standard, can single receiver do not process the data.

According to the given TMC standard allowed from the broadcasters a maximum of 300 different traffic information to be sent as the receiver according to the standard is designed so that it stores 300 different traffic information can. Furthermore, according to the given Standards traffic information, in particular the traffic information data, in a given traffic data group with a given Traffic data group identifier sent. According to the given standard is the name Traffic data group 8A data group. The receivers are designed so that they use the data of the 8A data group as data of traffic information classify.

The Data of the traffic information may be given for a predetermined period of time at the end of which the corresponding traffic information as invalid be classified and receiver side deleted so that new traffic information is received and stored can. Alternatively, over the data transmission system a delete command are sent, classified by the outdated traffic information as invalid and deleted can be.

It It is the object of the invention to provide a method and a device for transmitting of data over a data transmission system to create, that or the simple and comfortable transferable of data in a big one geographical area.

The The object of the invention is achieved by the characteristics of the independent Claims. Advantageous embodiments of the invention are specified in the subclaims.

The Invention is characterized according to a first Aspect of the invention by a method and apparatus for transmitting of data of a message. A content of the message refers to a given geographic area. The data is transmitted by transmitted the data transmission system. A data stream containing several groups of data is sent. In a first data group, a predetermined identifier is sent. The default identifier is one comprising the data of the message assigned to the second data group. The given identifier is representative for the given geographic area and for a given application. The default application is the receiver side designed for Processing the data of the message and outputting the message. The data of the message is transmitted in at least the second data group.

This makes it easy to map the data to the given application and geographic area. This allows the receiver to decide, depending on its own geographic location, whether the data of the second group of data is relevant to it and whether the data of the second group of data should be stored. This allows the receiver to store the message only if the recipient is in the given geographic area. Furthermore, this makes it possible to transmit via the transmission equipment data for a large geographical area, which covers the given geographical area, without the receiver in the given geographical area having to store data which does not relate to the given geographical area. Further, if the messages are traffic and / or travel information, this allows the radio station to broadcast more than 300 traffic and / or travel information.

The Invention is characterized according to a second Aspect of the invention by a method and an apparatus for Receive and save the data of the message. The content of Message refers to the given geographic area. Of the on the data transmission system based data stream is received. The data stream includes several Data groups. Dependent from the first data group of the data stream becomes the default Identifier determined. The given identifier is the data of the Message associated with the second data group of the data stream. The given identifier is representative for the given geographic area and for the given application. The default application is the receiver side designed for Processing the data of the message and outputting the message. Dependent the identified identifier becomes the second data group of the data stream determined. The data of the message of the second data group will be saved. This is particularly advantageous when the receiver is in the given geographic area.

In an advantageous embodiment of the first and / or second aspect The invention comprises the message traffic and / or travel information whose Content refers to the given geographic area. This allows receiving end to process the traffic and / or travel information only if they relate to the given geographic area. Furthermore, then a conventional Receiver, The maximum of 300 traffic information can store and the only data a traffic data group, in particular an 8A data group of the Data transmission system, as data from traffic information can still recognize by means of the data transmission system receive the maximum of 300 traffic information traffic data groups. A new recipient can be designed in such a way that it is capable of producing is to store more than 300 traffic information, and that he also data of the second data group, which is not the default Traffic data group is as traffic information data too detect. Thus, the transmitter far more than 300 traffic and / or Broadcast travel information.

In a further advantageous embodiment of the first and / or second In the aspect of the invention, the message comprises a parking situation in the given geographical area. This allows a user of the recipient only to issue the message with the parking situation in the given area.

The advantageous embodiments of the method can be readily advantageous Embodiments of the devices are transmitted.

The The invention is described below with reference to schematic drawings explained in more detail. It demonstrate:

1 a transmitter and a receiver,

2 a general data group,

3 a detailed view of the general data group,

4 a 3A data group,

5 a second data group,

6 a table with data groups and data group identifiers,

7 a flowchart of a program for transmitting data of a message,

8th a flow diagram of a program for receiving and storing the data of the message.

elements same construction or function are cross-figurative with the same Reference number marked.

A transmitter can broadcast a program of the transmitter via a data transmission system. The program can be received by a receiver and converted into optical and / or acoustic signals and output. As an alternative or in addition to the program, the sender can transmit a preferably several messages MES via the data transmission system. The messages are represented by data DATA. The data DATA is digital and made up of individual bits. The messages MES include in particular traffic and / or travel information. The traffic information may include, for example, congestion information, construction site information, a ghost driver alert, and / or a warning that items and / or people are on a roadway. The travel information may be included For example, a parking situation, road tolls and / or information on public transport include. The messages MES represented by the data DATA can be output directly on the receiver side, but are preferably made available to other functions without being output. For example, a navigation system can plan and / or change a route depending on the data DATA. The data transmission system may comprise, for example, the radio data system RDS, TPEG ("Transport Protocol Experts Group") and / or DAB ("Digital Audio Broadcasting").

If the data DATA includes traffic and / or travel information, so For example, the data DATA is preferably transmitted according to the TMC standard. The data DATA can however dependent on the data transmission system also according to one other standards be, for example according to TPEG Automotive. In the TMC standard is determined which bits of one of the messages MES representative are for an event for a place where the event has occurred, for a direction of travel, the event affects, for a track length, on which affects the event for a period of time in which the event is expected to impact and / or for one Evasive command, dependent on the an alternative route is determined or not. Further, in the TMC standard Tables are given, based on which depends on the individual bits the message MES the event, the place, the direction of travel, the Length, the duration and / or the avoidance command are determined.

For example, a radio station can by means of a transmitter 1 ( 1 ) radiate a radio program over radio waves. In addition to the radio program, the radio station can transmit via the transmitter 1 based on the radio data system RDS ( 8th ) at the same time send a data stream STREAM containing the data DATA ( 5 ). The transmitter 1 can also be referred to as a device for transmitting the data DATA of the message MES. The radio data system RDS is an international standard that includes a transmission protocol that must be followed for a receiver to use the DATA data. The radio data system is specified in ISO 50 067.

The receiver receiving the radio program and / or the data DATA is, for example, a radio and / or a navigation system. If the data DATA is sent by means of a satellite, the receiver may also be a satellite receiver. Furthermore, the DATA data can also be sent via cable. The radio or the navigation system is preferably in a motor vehicle 3 arranged. The radio or the navigation system comprises an antenna 5 via which the radio waves can be received.

The from the receiver received radio program is preferably audibly output, for example via a Loudspeakers of the radio. The data DATA preferably does not converted into audio signals and output, but merely stored, evaluated and / or inaudible Additional information output and / or from the navigation system considered in a route guidance. Depending on the data type can For example, the data DATA is a name of the radio station, a current frequency of the radio station, another frequency of the radio station, a program type of the currently broadcast radio program and / or Traffic and / or travel information.

The data DATA becomes data groups depending on its data type of the data DATA 2 different data group type GRT packed ( 2 ). Thus, according to the RDS standard for traffic information, a different data group type GRT is provided than for the transmission of date and time. The data groups 2 are hanged together to form the data stream STREAM. One of the data groups 2 can be repeated differently within the stream STREAM. Preferably, the data groups become 2 which comprise particularly important data DATA and / or comprise data relating to rapidly changing events, more frequently repeated as data DATA which are not very important and / or which relate to slowly changing events. For example, traffic information about a ghost driver is preferably repeated much more frequently than traffic information about a construction site.

The transmission of the data group 2 starts with a first bit 14 the data group 2 , The data group 2 is composed of a first, a second, a third and a fourth data block 4 . 6 . 8th . 9 educated. Each one of the data blocks has an information block 10 and a test block 12 , The information block 10 comprises 16 data bits m ₀ -m ₁₅ . The test block 12 includes 10 check bits c ₀ -c ₉ . Thus, each of the data blocks comprises a number of 26 bits and each data group 2 a number of 104 bits.

In the information block 10 of the first data block 4 a program identifier is transmitted. The program identifier is representative of the country in which the current radio station is located and whether the current radio station is a national or an international radio station and for which name the current radio station has.

In the test block 12 test values are transmitted, on the basis of which it can be checked whether the corresponding data group 2 , in particular the corresponding data block, was transmitted without errors. For example, the check value may be a checksum of the bits of the information block 10 represent. For a verification algorithm to ensure that the data group 2 has been transmitted correctly, the data group 2 received twice without errors. However, since only about 70 percent of the data groups 2 received error-free, was specified in the standard that each data group is sent three times, preferably in succession.

With first four bits of the information block 10 of the second data block 6 four group identifier bits A ₀ -A _{3 are} transmitted ( 3 ), which together form a data group identifier 13 result. The data group identifier 13 is representative of the data group type GRT. Depending on the data group identifier 13 Thus, the receiver can recognize which data group type GRT is currently being received. A part of all data group types GRT specified in the radio data system RDS is shown in a table in 6 shown. In it are in a column 20 the data group types GRT are listed, in columns 22 the group identifier bits, in one column 24 indicates whether the corresponding data group type GRT is named in a 1A data group, and in a column 26 Descriptions of the group types GRT are listed.

Depending on a fifth bit B _{0 of} the information block 10 of the second data block 6 the receiver may receive a version of the currently received data group 2 determine. The version of the data group 2 is representative of whether the program identifier is only in the first data block 4 is sent or whether the program identifier in addition in the third data block 6 will be shipped. A sixth bit TP of the information block 10 of the second data block 6 is representative of whether the current data group 2 Contains traffic information. In subsequent Programmartkennungsbits PT ₀ to PT ₄ a program type identifier PTY is transmitted. The program type identifier PTY is representative of which program type the radio program currently being broadcast by the radio station is. The program type can be for example classical, rock, pop, news or much more. The remaining bits of the information block 10 of the second data block 6 are available for the transmission of data DATA. Further, if in the third data block 8th not the program identifier is sent, the information blocks 10 of the third data block 8th and the fourth data block 9 for transmitting the data DATA available. The transmission of the data group 2 ends with a last bit 16 the data group 2 ,

The data group 2 a 3A data group type 3_A can also be referred to as the first data group, is the only representative of a first data group topart and takes a special position among the data groups 2 one ( 4 ). The first data group topology, in particular the first data group, contains information about which data group types GRT are currently being broadcast by the radio station. The data group types GRT belong, for example, to second and / or third data group upper types.

The second data group topology includes free data groups ODA. The free data group types ODA can be optionally assigned by the radio station. In this context, this means that each radio station can decide for itself which free data group ODA it uses for a particular information service. This is done in the information block 10 of the second data block 6 the 3A group 3_A first the group identifier 13 transmitted and in the last 5 bits of the second data block 6 then becomes the corresponding data group identifier 13 the additionally used free data group ODA. In the third data block 8th 3A data group 3_A and / or in the fourth data block 9 3A data group 3_A an identifier is specified, that of a second data group comprising the data DATA of the message MES 2 is assigned to the data stream STREAM and representative of the predetermined geographic area GEO, to which the data DATA of the message MES relate, and for the given application, which is stored on the receiver side and which must be used to evaluate the data DATA. Therefore, the predetermined identifier preferably includes an application identifier AID and a geographical identifier GID. The application identifier AID is representative of the given application. The geographical identifier GID is representative of the given geographic area GEO. Preferably, a digital map is stored on the receiver side, via which the predetermined geographic area GEO can be determined as a function of the geographical identifier GID. Alternatively, the digital map and individual coordinates can be saved.

The additionally occupied free data group ODA ( 5 ) can also be used as second data group 2 and carries in group identifier bits A ₀ -A _{3 of} the information block 10 of the second data block 6 the corresponding group identifier 13 , The last bits of the information block 10 of the second data block 6 and the bits of the information blocks 10 the third and the fourth data block 8th . 9 can then be used for any data DATA, preferably for the data DATA of the traffic and / or travel information.

The third data group top contains data groups 2 to which the data type of the data DATA and those on the receiver side are assigned an application which must be started in order to evaluate the received data DATA. For example, with the data group 2 an 8A data group type 8_A general traffic messages MES_ALG are sent, preferably according to the TMC standard. On the receiver side, a corresponding traffic message application must then be started for processing the data DATA. For a data group 2 the 8A data group type 8_A For example, the type of traffic degradation is preferably the last five bits of the information block 10 of the second data block 6 and in the bits of the information block 10 of the third data block 8th sent. The location of the traffic degradation is preferably with the bits of the information block 10 of the fourth data block 9 sent. In the data group 2 the 8A data group type 8_A the general traffic information is sent independently of a traffic information type and independently of a given geographic area GEO to which the corresponding traffic and / or travel information relates. According to the default standard, the number of traffic information that is above the data group 2 the 8A data group type 8_A be limited to a maximum of 300 different traffic information. This means that after broadcasting 300 different traffic information, the radio station must first ensure that at least one of the broadcast traffic information is invalidated on the receiver side and is deleted. For this purpose, a time period can be sent with the corresponding traffic information, which is representative of how long the corresponding traffic information should retain its validity. After the lapse of time, the corresponding traffic information is automatically deleted. Alternatively, the radio station can send a cancellation message from which the corresponding traffic information is automatically deleted on the receiver side.

Preferably if the free data groups ODA are provided with traffic and / or travel information, which are limited to the given geographic area GEO and / or which are limited to specified traffic information types. The given geographic area GEO can, for example, a street, a Downtown, a downtown area and / or any geographic Area GEO. The default traffic information type can For example, a traffic flow, construction sites, ghost drivers and / or a parking situation in one of the given geographical Areas include GEO.

Thus, in particular in a very large geographic area GEO, far more than the 300 general traffic messages MES_ALG can be broadcast, for example 300 general traffic messages MES_ALG via the data group 2 the 8A data group 8_A and other traffic and / or travel information about the free data groups ODA. Thus, conventional receivers still can handle the general traffic messages MES_ALG of the 8A data group 8_A while new receivers may be designed to be in addition to the 300 general traffic messages MES_ALG of the 8A data group 8_A receive, store and evaluate further traffic and / or travel information.

Preferably, a program for transmitting the data DATA of the message MES is stored on the transmitter side of a storage device of the radio transmitter ( 7 ). The program for transmitting the data DATA is used after a sender-side receipt of the message MES, for example sent by the police and / or a traffic detector, the message MES in a suitable data group 2 to encode and broadcast. The program for transmitting the message MES is preferably started in a step S1 in which variables are initialized if necessary.

In a step S2, the message MES is received on the transmitter side and stored on the storage device of the radio station.

In a step S3 becomes dependent from the message MES determines the application identifier AID. That means, it is determined which application is started on the receiver side must be able to evaluate the data DATA of the message MES.

In a step S4 becomes dependent from the message MES the geographic area GEO specified on that the message MES refers to.

In a step S5 becomes dependent from the given geographic area GEO the geographical identifier GID determined.

In Step S6 checks to see if the message MES is the general traffic message MES_ALG. Is the condition of step S6, the processing is continued in a step S7. Is the Condition of step S6 is not satisfied, so the processing continued in a step S10.

In step S7, the message MES is in one of the data groups 2 the 8A data group 8_A coded.

In a step S8, the data stream STREAM depending on the 8A data group 8_A determined and broadcast.

In In a step S9, the program for transmitting the data DATA of Message MES be terminated. Preferably, the program is for transmission the data DATA regularly at the transmitter side Receipt of the message MES processed.

In step S10, the application identifier AID and the geographical identifier GID in the first data group 2 , in particular the 3A data group 3_A , coded and assigned to one of the data group types GRT.

In a step S11, the message MES is in the second data group 2 which has the data group type GRT assigned in step S10, in particular in one of the free data groups ODA.

In a step S12 becomes dependent of the free data group ODA coded in step S11 of FIG Stream STREAM formed and broadcast.

In In a step S13, the program for transmitting the data DATA of Message MES be terminated. Preferably, the program is for transmission the data DATA regularly at the transmitter side Receipt of the message MES processed.

Preferably, a program for receiving and storing the data DATA of the message MES is stored on the receiver side ( 8th ). The program for receiving and storing the data DATA of the message MES is preferably started at a start of a device comprising the receiver, for example the radio or the navigation system, in a step S14 in which variables are initialized if necessary. The device may also be referred to as a device for receiving and storing the data DATA of the message MES.

In In a step S15, a current geographical position POS of the receiver determined, preferably by coupling the device with a Positioning system, for example with GPS.

In Step S16 is the data stream STREAM of the radio data system RDS received.

In a step S17, the 3A data groups 3_A read from the data stream STREAM.

In a step S18 becomes dependent on the 3A group types 3_A Determines which data group types GRT are sent with the current data stream STREAM.

In a step S19 becomes dependent on the 3A group types 3_A determined the geographical identifier GID.

In a step S20 becomes dependent on the 3A group types 3_A determines the application identifier AID.

In a step S21 becomes dependent the geographic identifier GID is the given geographic area GEO determined. Preferably, a table is stored for this purpose on the receiver side, in which the geographical identifiers GID the given geographical GEO areas are assigned.

In a step S22 it is checked whether the current position POS of the motor vehicle 3 , in particular the consignee, is within the given geographic area GEO. If the condition of step S22 is not satisfied, the processing is continued again in step S15. If the condition of step S22 is satisfied, the processing is continued in step S23.

In step S23, it is checked if the currently received data group 2 of the data group type GRT determined in the step S18. If the condition of step S23 is satisfied, the processing is continued in step S24. If the condition of step S23 is not met, step S23 is executed again until the currently received data group 2 of the data group type GRT determined in step S18.

In step S24, the message MES of the currently received data group 2 , in particular the data DATA of the corresponding data group 2 stored on the receiver side by means of a memory command SAVE. Furthermore, depending on the application identifier AID determined in step S20, the corresponding application is started to evaluate the stored data DATA.

In In a step S25, the program for receiving and storing the data DATA of the message MES are terminated. Preferably, the Program for receiving and storing the data DATA of the message MES regularly during the Operation of the receiver processed.

1

transmitter

2

data group

3

motor vehicle

4

first data block

5

antenna

6

second data block

8th

third data block

9

fourth data block

10

information block

12

test block

13

Data Group ID

14

first Bit of the data group

16

last Bit of the data group

20

column of the data group types

22

columns the group identifier bits

24

column in terms of Naming the data group type in the 1A group

26

column with descriptions of the data group type

m ₀ -m ₁₅

data bits

c ₀ -c ₉

check bits

A ₀ -A ₃

Gruppenkennungsbits

GRT

Datengruppenart

B ₀

fifth bit second data block

TP

sixth Bit second data block

PTY

PTY type

PT ₀ -PT ₄

Programmartkennungsbits

BEGIN

begin

RDS

Radio Data System

AID

application ID

3_A

3A data group

8_A

8A data group

MES

message

GID

geographical ID

GEO

geographical area

POS

geographical position

SAVE

store instruction

S1-S25

steps one to twenty-five

j

condition Fulfills

n

condition not fulfilled

Claims (6)

Method for transmitting data (DATA) of a message (MES) whose content relates to a given geographic area (GEO) by means of a data transmission system, in which - a data stream (STREAM) is transmitted, which comprises a plurality of data groups ( 2 ), - in a first group of data ( 2 ) a predetermined identifier is sent to a second data group comprising the data (DATA) of the message (MES) ( 2 ) and which is representative of the predetermined geographic area (GEO) and for a given application, wherein the predetermined application is designed on the receiver side for processing the data (DATA) of the message (MES) and for outputting the message (MES), the data (DATA) of the message (MES) in at least the second data group ( 2 ). Method for receiving and storing data (DATA) of a message (MES), the content of which relates to a given geographic area (GEO), in which - based on the data transmission system, a data stream (STREAM) is received which contains a plurality of data groups (MES) 2 ), depending on a first data group ( 2 ) of the data stream (STREAM), a predetermined identifier is determined which corresponds to a data group (DATA) of the message (MES) comprising the second data group (FIG. 2 ) is assigned to the data stream (STREAM) and which is representative of the predetermined geographic area (GEO) and for a given application, wherein the predetermined application is designed on the receiver side for processing the data (DATA) of the message (MES) and for outputting the message (MES), - the second data group depending on the identified identifier ( 2 ) of the data stream (STREAM) is determined, - the data (DATA) of the message (MES) of the second data group ( 2 ) get saved. Method according to one of the preceding claims, in the message (MES) at least one traffic information in the geographical area (GEO). Method according to one of the preceding claims, in the message (MES) a travel information in the specified geographical area (GEO). Device for transmitting data (DATA) of a message (MES) whose content relates to a given geographic area (GEO) by means of a data transmission system, the device being designed to - send a data stream (STREAM) comprising a plurality of data groups ( 2 ), - transmission of a predetermined identifier belonging to a second data group comprising the data (DATA) of the message (MES) ( 2 ) and which is representative of the given geographical area (GEO) and for a given application, in a first data group ( 2 ), wherein the predetermined application is designed on the receiver side for processing the data (DATA) and for outputting the message (MES), - transmitting the data (DATA) of the message (MES) in at least the second data group ( 2 ). A device for receiving and storing data (DATA) of a message (MES) whose content relates to a given geographic area (GEO), the device being designed to - receive a data stream (STREAM) based on the data transmission system comprising a plurality of data groups ( 2 ), determining a predetermined identifier belonging to a second data group comprising the data (DATA) of the message (MES) ( 2 ) of the data stream (STREAM) and which is representative of the given geographical area (GEO) and for a given application, depending on a first data group ( 2 ) of the data stream (STREAM), wherein the predetermined application is designed on the receiver side for processing the data (DATA) of the message (MES) and for outputting the message (MES), - determining the second data group ( 2 ) of the data stream (STREAM) depending on the identified identifier, - storing the data (DATA) of the message (MES) of the second data group ( 2 ).