DE4123979A1 - Traffic announcement storage system for car radio - uses signals at beginning and end of announcement to control storage in memory - Google Patents

Abstract

The storage system allows the received traffic announcements to be recorded in a memory, for subsequent interrogation. A traffic signal decoder provides respective signals at the beginning and end of the traffic announcement, used for controlling storage of the latter in the memory. The stored traffic announcement is erased after its subsequent playback. Pref. the real time of the traffic announcement is recorded in the memory to allow it to be displayed when the traffic announcement is played back. ADVANTAGE - Allows previously transmitted traffic announcements to be supplied to driver.

Description

The invention relates to a method and an arrangement for Storage and optional retrieval of traffic reports at those by means of one in a motor vehicle Radio receiver, which has a traffic radio decoder, a first traffic radio signal from a broadcast information item, the beginning and a second traffic signal, which indicates the end of the broadcast of traffic information, is decoded.

As is known, broadcasting stations are in regular traffic information for motorists shines in order to offer the driver the opportunity Traffic jams or traffic jams in the traffic area to avoid dodging. This is the driver Participation in traffic is facilitated, and continues this can generally make the flow of traffic more favorable will.

This traffic information is especially for this provided that every driver in a motor vehicle located radio receiver receives. To guarantee afford the driver the traffic information  receives the broadcasts, even if he does not intend to Continuously pursuing the end becomes everyone at the beginning and end Traffic information sent a signal indicating the beginning and marks the end of traffic information. A Traffic radio decoder, which is arranged in the radio receiver recognizes these signals and derives control signals from them with which the radio receiver itself can be controlled can. So it is possible, for example, with these control signals the volume during the broadcast of traffic to raise information or the final stage of broadcasting to turn on the receiver.

The disadvantage is that the broadcasts of traffic information only be done at intervals so that it cannot be guaranteed can that the driver the traffic information concerning him received before the start of the journey and he consequently does not know whether traffic information is sent that affects the route that he was on until the broadcast of the next traffic information. Furthermore it is sometimes difficult with a lot of traffic messages clearly identify those who are responsible for the upcoming route is decisive. In those cases it would be it is desirable to repeat the traffic information to be able to hear.

For the reasons presented, the positive effect of Traffic information is not available in a large number of cases can be reached because the motorist's traffic information either not or received too late and therefore not can react in time. The well-known arrangement of Traffic radio decoders in radio receivers for motor vehicles Witnesses cannot remedy this.

The invention has for its object with a Method for storing and optionally retrieving traffic  notify the user of current traffic information depending on the time of sending and a Specify an order to carry out the procedure.

The object is achieved according to the inventive method solved in that when the first traffic radio occurs signals a memory is activated, in which to to the occurrence of the second traffic radio signal the broadcast Traffic information is stored that if necessary too the saved traffic information at a later time mation is played and that the stored traffic information can be deleted.

A favorable embodiment of the method according to the invention provides that the current time of broadcasting the traffic information stored as encrypted information and when the stored traffic information is played back mation is displayed. It is possible to update the time mation together with the traffic information in one Store memory or one for the time information use your own storage.

Furthermore, it is expedient, after a Storage of traffic information the presence of display stored information.

A preferred embodiment of the inventive method rens provides that the NF signal is the traffic information is digitized, then as digital information and at playing this converted into an analog signal and is issued as such.

In an expedient embodiment of the invention, the Radio receiver, especially when turning off the driver stuff, switched to a wait state. In this waiting  The only condition is the reception level and traffic information decoder of the radio receiver in the motor vehicle tet. A convenient procedure is included in this see that the waiting state to a predeterminable Time is switched on automatically.

The object is further achieved by a Arrangement for storing and optionally retrieving traffic messages resolved. This arrangement is characterized by

• - At least one memory for storing the sent Traffic information,
• - A memory activation circuit with a control input of each memory is connected,
• - A connection between the exit of the traffic radio decoder and the memory activation circuit,
• - An at least indirect connection between the NF-Aus the reception level and the memory input or the Memory inputs,
• - A control circuit for externally switching on the memory playback, the control circuit with a tax input of each memory is connected,
• - An at least indirect connection of the Spei or the Spei inputs with the input of the NF level of broadcasting recipient.

An expedient embodiment of the arrangement according to the invention In this case, the plan is to design the storage in the manner of a Training the telephone answering machine.

In a particularly favorable embodiment of the invention  according to the arrangement is the memory or are the memory designed as a digital read / write memory, each Input of a memory pre-an analog-to-digital converter switches and every output of a memory a digital Ana log converter is connected downstream.

With the invention it is thus achieved that any traffic information with a start and an end signal is sent, is stored in the motor vehicle itself and is available at any time. In particular, this will be reached when the driver is in the waiting state or the waiting state due to a previous time setting was taken automatically. Choosing one Waiting state is particularly favorable when, for example instruct the driver to have a longer stopover intends two trips during which he is unable is to track the traffic information. By a automatic selection of the waiting state it is possible For example, in good time before starting the daily journey save and send the traffic information sent Retrieve the start of the journey, which brings the driver into the Location is shifted, a precise knowledge of the traffic to get the situation of the intended route, without broadcasting the broadcasts precisely before departure to have to pursue.

Choosing a memory like a phone call worters will be especially cheap if it is on it arrives in the manufacture of the arrangement according to the invention already known and existing assemblies fen. On the other hand, the choice of digital storage mediums is an advantage if it is based on a perfect wear-free and very reliable storage arrives.

The method according to the invention is described below using a  Embodiment of an arrangement according to the invention Save and to selectively call up traffic reports are explained in more detail.

The accompanying drawing shows a schematic representation the structure of an arrangement according to the invention with two digital read / write memories.

A radio receiver located in the motor vehicle essentially consists of a reception stage 1 , which is followed by an LF stage 2 , which amplifies the received LF signal and reproduces it via the loudspeaker 3 . The reception stage 1 is also followed by a traffic radio decoder 4 , which emits a control signal at its output when it detects a traffic radio signal. The output-side control signals of the traffic radio decoder 4 arrive at a first counter 5, the output side of the odd-numbered at each control signal of the traffic radio decoder 4 is a logic zero state and the low logic state occupies, in each even-numbered control signal. A second counter 6 counts the clock pulses of a clock generator 7 , its output persisting in the logic zero state until a predetermined number of clock pulses has been counted. Then its output goes to the logic low state. The second counter 6 of each control signal which is output from the output of the traffic radio decoder 4, is reset so that the second counter 6 counts the number of output by the clock generator 7 clock pulses between the output by the traffic radio decoder 4 control signals. If the preset number is exceeded, the second counter 6 resets the first counter 5 . This ensures that when there are very long pauses between several pieces of traffic information, the recording always starts again, so that actually only current traffic information is stored.

The output of the first counter 5 is logically ANDed in negated form with the control signal of the traffic radio decoder 4 and is connected in this form to the write control input of a first memory 8 . Simply logically AND-linked with the control signal of the traffic radio decoder 4 , the output of the first counter 5 is connected to the write control input of a second memory 9 .

When a first traffic information occurs, the output of the traffic radio decoder 4 will show a logical L signal during the traffic information. The described configuration of the arrangement according to the invention with the first counter 5 and the second counter 6 allows the input of the first memory 8 to be opened for a write operation. For this purpose, the analog traffic information that is present at the output of the reception stage 1 of the radio receiver is transformed into a digital signal via an analog-digital converter 10 and the first memory 8 is written with this digital information. When a second traffic information occurs, the write control input of the first memory 8 is inhibited via the upstream AND gate 11 and the write control input of the second memory 9 is released via the AND gate 12 , so that the digitized traffic information is stored in the second memory 9 without changing the memory content of the first memory 8 . Thus, the chronologically successive first and second traffic information are stored in the first memory 8 and in the second memory 9, respectively. This ensures that with a second piece of traffic information, which may include only the change of a part of a first piece of traffic information, the memory content of the first memory 8 is not deleted or overwritten with the first traffic information.

For the purpose of reproducing the memory contents, the output of the first memory 8 can be released for reading via a symbolically represented reproduction switch 13 which can be operated by the driver of the motor vehicle. An evaluation circuit 14 recognizes the end of the information read out from the first memory 8 and sends a logic L signal to an AND gate 15 , which enables the output of the second memory 9 to be read when an L signal is output on the first counter 5 is present, ie a second traffic situation is actually saved. The digital output situations of the first and second memories 8 and 9 are converted into an analog signal via a digital-to-analog converter 16 and passed to the NF stage 2 of the radio receiver and thus reproduced. During this playback process, a further AND gate 17 inhibits the transmission of a control signal of the traffic radio decoder 4 if this should occur accidentally during memory playback, that is to say, current traffic information should be sent during this time, since in this case the rest of the circuit, not shown in more detail of the radio receiver anyway reproduces the traffic information just broadcast.

As can be seen, the second memory 9 serves as a reserve memory in the event that additional information is sent within the otherwise usual time interval between two pieces of traffic information. In general, however, the first memory 8 is always used for storage. The usual time interval between two pieces of traffic information, for example if this is sent every half an hour, can be set by the counting stock of the second counter 6 .

To implement the waiting state described, the output of the power supply 18 is provided with a controllable switch 19 which can either be switched on directly from the outside or can be switched via a timer 20 . This controllable switch 19 bridges the on / off switch 21 of the radio receiver for the reception stage 1 and the traffic radio decoder 4 , so that only these two parts are supplied with current during the waiting state and are thus activated.

Reference list

1 reception level
2 NF level
3 speakers
4 traffic radio decoders
5 first counter
6 second counter
7 clock generator
8 first memory
9 second memory
10 analog-to-digital converters
11; 12 AND gate
13 playback switch
14 evaluation circuit
15 AND gate
16 digital-to-analog converters
17 AND gate
18 Power supply
19 controllable switches
20 timer
21 on / off switch

Claims (9)

1. A method for storing and optionally calling up traffic reports, in which, by means of a radio receiver located in a motor vehicle, which has a traffic radio decoder, a first traffic radio signal, which indicates the start and a second traffic radio signal, which indicates the end of the broadcast of traffic information, from a broadcast information item, is decoded, characterized in that when the first traffic radio signal occurs, a memory is activated, in which the transmitted traffic information is then stored until the second traffic radio signal occurs, that if necessary the stored traffic information is reproduced at a later time and that the stored traffic information is erasable. 2. The method according to claim 1, characterized records that the current time of the broadcast the traffic information as encrypted information saved and when playing the saved Traffic information is displayed. 3. The method according to any one of claims 1 or 2, because  characterized by that Presence of stored information is displayed becomes. 4. The method according to any one of claims 1 to 3, because characterized by that LF signal of traffic information digitized as digital information stored and during playback converted back into an analog signal and as such is issued. 5. The method according to any one of claims 1 to 4, because characterized in that the Radio receiver, especially when turning off the Vehicle is switched to a waiting state in which only the reception level and the traffic radio decoder are switched on. 6. The method according to claim 5, characterized records that the wait state becomes a Predeterminable time automatically switched on becomes. 7. Arrangement for storing and optionally recalling traffic reports with a receiver located in a vehicle, which is provided with a traffic radio decoder, characterized by

• - at least one memory ( 8 ; 9 ) for storing the broadcast traffic information,
• a memory activation circuit ( 5 ; 6 ; 7 ; 11 ; 12 ) which is connected to a control input of each memory ( 8 ; 9 ),
• - A connection between the output of the traffic radio decoder ( 4 ) and the memory activation circuit ( 5 ; 6 ; 7 ; 11 ; 12 ),
• - an at least indirect connection between the AF output of the receiving stage ( 1 ) and the memory input of each memory ( 8 ; 9 ),
• - A control circuit ( 13 and 14 ; 15 ) for externally switching on the memory playback, the control circuit being connected to a control input of each memory ( 8 ; 9 ),
• - An at least indirect connection of the memory output or outputs to the input of the NF stage ( 2 ) of the radio receiver.

8. Arrangement according to claim 7, characterized records that the memory in the manner of a Telephone answering machine is trained. 9. Arrangement according to claim 7, characterized in that the one or more memories ( 8 ; 9 ) are designed as digital read / write memories, that each input of a memory ( 8 ; 9 ) an analog-Digi tal converter ( 10 ) upstream and a digital-to-analog converter ( 16 ) is connected downstream of each output of a memory ( 8 ; 9 ).