CN102035612A - Mobile computer device using a modulated aural signal and method for transmitting information in aid of the modulated aural signal - Google Patents

Mobile computer device using a modulated aural signal and method for transmitting information in aid of the modulated aural signal Download PDF

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Publication number
CN102035612A
CN102035612A CN2010105007390A CN201010500739A CN102035612A CN 102035612 A CN102035612 A CN 102035612A CN 2010105007390 A CN2010105007390 A CN 2010105007390A CN 201010500739 A CN201010500739 A CN 201010500739A CN 102035612 A CN102035612 A CN 102035612A
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China
Prior art keywords
signal
audio signal
computing machine
mobile computing
modulated
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CN2010105007390A
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Chinese (zh)
Inventor
C·诺伊曼
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Robert Bosch GmbH
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Robert Bosch GmbH
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B1/00Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/02Transmitters
    • H04B1/03Constructional details, e.g. casings, housings
    • H04B1/034Portable transmitters
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01CMEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C21/00Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
    • G01C21/26Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 specially adapted for navigation in a road network
    • G01C21/34Route searching; Route guidance
    • G01C21/36Input/output arrangements for on-board computers
    • G01C21/3626Details of the output of route guidance instructions
    • G01C21/3629Guidance using speech or audio output, e.g. text-to-speech
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01CMEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C21/00Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
    • G01C21/26Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 specially adapted for navigation in a road network
    • G01C21/34Route searching; Route guidance
    • G01C21/36Input/output arrangements for on-board computers
    • G01C21/3626Details of the output of route guidance instructions
    • G01C21/3661Guidance output on an external device, e.g. car radio
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04HBROADCAST COMMUNICATION
    • H04H20/00Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/53Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers
    • H04H20/61Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers for local area broadcast, e.g. instore broadcast
    • H04H20/62Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers for local area broadcast, e.g. instore broadcast for transportation systems, e.g. in vehicles
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02DCLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00Reducing energy consumption in communication networks
    • Y02D30/70Reducing energy consumption in communication networks in wireless communication networks

Abstract

The invention relates to a mobile computer device using a modulated aural signal, comprising a functionality processor device with an aural output end for outputting the aural signal, an FM modulator (12) for modulating the aural signal to the carrier wave frequency, a coder (13) for modulating the aural signal with the signal representing a traffic notice, an FM emitter (14) for emitting the aural signal, wherein the FM emitter (14) is arranged to emit the signal at the frequency of less than 50nW. The mobile computer device, especially relates to a mobile navigation device and the navigation command as the modulated aural signal is sent to a device such as a fixation audio system in a vehicle. Because the signal representing the traffic notice, the audio system intermits amusement program which is currently broadcasted in the continuous time period of the aural signal, such as playing the CD.

Description

Adopt the mobile computing machine of modulated audio signal and by the method for its modulated audio signal transmission information
Technical field
The present invention relates to adopt the mobile computing machine of modulated audio signal, and relate to the method that is used for by the modulated audio signal transmission information of mobile computing machine.
Background technology
This mobile computing machine for example can be a navigation system.Being used for the private navigation system of using popularizes at present.It is particularly useful for motor vehicle, so that fast and arrive the destination of anticipation reliably, thereby and replaces and finds out the address in person in urban transportation figure or map by driver or his passenger.Navigation system has been equipped with antenna for this reason, can receive the gps signal of the current location of explanation user or motor vehicle by antenna.Under the situation of the map material of considering storage, compared with the previous target location of importing in described position, so that corresponding current driving indication can be exported to the driver of vehicle.The driving indication can either be issued by screen vision ground at this, also can be by the audio frequency output sense of hearing ground issue of navigation system.
Mainly containing two kinds of dissimilar navigation system at present comes into operation: a kind of is built-in system, wherein the driver of navigation system and operating unit are integrated in the sound system of vehicle, another kind is so-called " moving " navigation system, it is independent of the built-in part work of motor vehicle, and therefore, also can be carried outside the motor vehicle by the user.The equipment of mentioning later is because it is lower and more and more welcome than fixing built-in system cost.
Because the loudspeaker function of this mobile navigation equipment (PND=mobile navigation equipment) often can not be competed mutually with the loudspeaker function of sound system, preferably, make the voice output that produces by this navigator, promptly give user's driving indication, can be by existing sound system output.As mentioned above, because mobile navigation equipment is not fixedlyed connected with the sound system of motor vehicle, just begin to carry out the transition to the fixing built-in sound system that the audio signal of mobile navigation equipment is transported to motor vehicle by FM transmitter (FM=frequency modulation(FM)) recently.For such transmission, the signal on the audio output of mobile navigation device is modulated onto on the carrier signal in the frequency modulator of FM transmitter, and follows the antenna transmission by the FM transmitter.This signal then can be by UKW receiver (UKW=ultrashort wave) the loud speaker output that for example radio system of the sound system of motor vehicle receives, sound system is also passed through in demodulation.The method that is used to transmit this modulated signal is for example known from DE 10 2,007 053 306 A1.
The advantage of such transmission is, can use by this way is the loud speaker of high-quality sound system mostly.Yet shortcoming is that if use sound system to be used for the receiving navigation indication by this way, it can not be used in other functions, for example listens CD.Yet because the navigation indication is not to provide constantly, but partly provide with the very large time interval, especially when stroke route be that long highway travels or country road when travelling, the user often feels to have to abandon music in navigator is in whole running times of operation or news is annoying.
Above-mentioned shortcoming also is, if the mobile computing machine is not a navigation system, but carries out function and is set to other equipment of output audio signal for the user.
The present invention is intended to overcome these shortcomings.
Summary of the invention
Task of the present invention solves by illustrated characteristics combination in independent claims 1,6 and 7.
Mobile computing machine according to the embodiment of the present invention, that adopt modulated output signal comprises: have the audio output that is used for output audio signal the functional processing apparatus, be used for described audio signal is modulated to the FM modulator on the carrier frequency, the FM reflector that is used to modulate the encoder of the described audio signal that has the signal that characterizes traffic announcements and is used to send described audio signal.Wherein, described FM reflector is set to send with the power of not enough 50nW.
The encoder of the signal by modulating described sign traffic announcements, by emulation be, be traffic news by the audio signal of functional processing apparatus output, it enjoys the priority of other application that have precedence over receiving system.Receiving system for example can be the sound system that is built in regularly in the motor vehicle.When receiving the signal that characterizes traffic announcements, this sound system interrupts its application that is moving, play CD for example, and the signal that is sent by described mobile computing machine by its loud speaker output.Therefore, for the output of the audio signal of described mobile computing machine, can use existing sound system, wherein, the application that is moving in the sound system only is interrupted the time of such length, the time that promptly described transmission of audio signals continues.
Because the modulated audio signal of mobile computing machine is sent out with low-power, the described modulated audio signal that is sent out only has very little coverage area, preferably, only is several meters far away.Other receiver of avoiding audio signal can be arranged in contiguous surrounding environment like this by this way receives.
As mentioning at introductory song, the mobile computing machine especially can be constructed to mobile navigation equipment.In this case, the functional processing apparatus is the guider of navigator.As everyone knows, the guider of carrying out the original function of navigator comprises: be used for the reception antenna of gps signal, so that determine the user's of described equipment current location; Storage device, road-map is stored thereon; Input unit is used to import at least one target location; And processor device, be used to determine the route between described target location and current location and be used on display the described route of output and/or with described route with of the navigation indication output of audio signal form as the sense of hearing.
Output at guider provides described audio signal.For mobile navigation equipment according to the embodiment of the present invention, also navigation device is added: be used for described audio signal is modulated to the FM modulator on the carrier frequency, the FM reflector that is used to modulate the encoder of the described audio signal that has the signal that characterizes traffic announcements and is used to send described audio signal.It should be noted that about said modules these needn't force to exist as discrete device.Thereby the FM modulator for example can be integrated in the guider itself.
Because the navigation instruction of mobile navigation equipment arrives at receiver with the form of the traffic wireless signal of emulation, it is the sound system of motor vehicle, the sound system that receives take automatically by the signal triggering of described sign traffic announcements measure (for example, interrupt current application, or reduce the volume of current application, and modulated audio signal is coupled to speaker unit).
When in the scope of the invention, mentioning " signal that characterizes traffic announcements ", should illustrate, typically refer to two kinds of characteristic signals at this, the beginning of the audio signal that wherein a kind of mark plan is transmitted, the end of the audio signal that another kind of mark is such.The latter's characteristic signal causes the interruption of the current application of sound system or volume are reduced to be cancelled.By this way, only make and to become possibility when navigator sends the current application of just interrupting sound system when navigation is indicated with the form of audio signal to sound system really.Other the time, the user of navigator can continue to listen to music, news or other and be stored in program or broadcast program on the CD.
The current application of sound system is only interrupted by the navigation indication occasionally thus.Therewith relatively, mobile navigation device according to the embodiment of the present invention provides the comfort level identical with built-in navigator, and don't loses the advantage of lower price.
Should be noted that make to receive the modulated audio signal that sends by mobile navigation equipment and export described audio signal that to become possible receiving equipment be audio frequency apparatus, have corresponding device thereof and characterize the signal of traffic announcements to be used to decode by loud speaker.And this corresponding device thereof realizes in the sound system of the automobile-use that great majority can get on the market at present.
The FM modulator of described mobile computing machine or mobile navigation equipment can be set to, and uses ultrashort wave frequency (87.5 to 108.0MHz) as carrier frequency.This frequency is can be easily by the conventional frequency that receives with the general commercial stereo set.
Can be additional to above-mentioned execution mode or substitute the execution mode that above-mentioned execution mode uses according to of the present invention another, described encoder is the RDS encoder.At this, the signal that characterizes traffic announcements can be TA signal or TP signal.As everyone knows, radio data system is represented in abbreviation " RDS ", and it makes with the wireless radio transmission additional information becomes possibility.Various services are provided in the RDS system, comprising those so-called " traffic program " (TP) and " traffic announcements " (TA).If transmit leg provides the traffic radio broadcasting, then send the TP signal at this.Information by TP sign advance notice traffic radio broadcasting.The TA signal locates to cause carrying out various functions at the receiver (audio frequency apparatus) that is provided with for this reason, as the switching of the radio work of working from CD, or improves the volume of audio frequency output, so that the user can learn outstanding traffic news.
RDS system with TA service and TP service represents the standard that is used to declare traffic returns of present extensive use.Emphasize that at this present invention is not limited to this standard, but should be included as all system and the standard of realization that described system and standard will be used for the such traffic news of mark in future according to the execution mode of the purpose of notion of the present invention.If mention encoder as the RDS encoder below, what then should consider is that this only is the example of this encoder, and other encoders can come into operation according to the current common mark that is used for traffic information signals.
In addition, the encoder of mobile computing machine according to the embodiment of the present invention not only can be constructed to component software but also can be constructed to nextport hardware component NextPort.The technology that realizes this hardware or component software is known in the prior art, therefore here will not describe in detail.Yet should illustrate, from saving the cost this point, be useful if encoder is constructed to component software.
Embodiments of the present invention also comprise navigation system, it comprises mobile navigation equipment recited above, and audio frequency apparatus, wherein said audio frequency apparatus has the reception antenna that is used to receive through being modulated to the audio signal on the carrier frequency, the decoder of the signal that characterizes traffic announcements of being used to decode and be used to export the speaker unit of described audio signal.Navigation system comprise navigator and with the audio frequency apparatus of its coupling, also comprise the combination of the equipment of mutual coordination, its navigation indication that makes the signal that will characterize traffic announcements be used in the output navigator becomes possibility, wherein said navigation indication is interrupted the current application of audio frequency apparatus at the same time or is reduced under the situation of volume of current application, via the speaker unit output of audio frequency apparatus.
As already mentioned, not only the encoder of mobile navigation equipment can be RDS encoder or decoder, and the decoder of described audio frequency apparatus also can be RDS encoder or decoder.
Except the structure with the form of navigator, according to the embodiment of the present invention, other application also can realize.Thereby the mobile computing machine can be portable computer for example, and it is carried by the user, and uses this portable computer can receive for example security news or weather forecast.Can for example pass through the loud speaker output of the sound system of motor vehicle for making these news, the modulation that characterizes the signal of traffic announcements can realize that modulated signal like this then is forwarded to sound system by the FM transmitter at the audio output of portable computer.
Embodiments of the present invention also relate to the method by the modulated audio signal transmission information of mobile computing machine, described mobile computing machine is set to output audio signal, and described method comprises: modulation has the audio signal of the described mobile computing machine of the signal that characterizes traffic announcements; Described audio signal is modulated on the carrier frequency; Send described audio signal.Wherein, described audio signal is sent by the power with not enough 50nW.
Chuan Shu signal causes at the receiver place described audio signal being handled as the traffic radio signal in this manner.In other words, for this reception, at the receiver place, the existing application of audio frequency apparatus is interrupted, and the signal that is transmitted is by for example device speaker output of output device of audio frequency apparatus.Since the loud speaker of audio frequency apparatus such as the sound system of motor vehicle mostly than the quality height of mobile computing machine as the boombox of mobile navigation device, thereby the improvement of the output quality of this mobile device can obtain like a cork, and needn't abandon using other application examples such as play CD because of the use of described audio devices long period.
As already mentioned, in described method, the output signal that can adopt mobile navigation equipment is as audio signal.By using method according to the embodiment of the present invention, just can reach the Voice Navigation of fixing built-in guider level with mobile navigation equipment.
The signal of the sign traffic announcements of using in the method according to embodiment of the present invention can comprise first and second characteristic signals of the beginning and the end of the described audio signal of mark.Said characteristic signal can send before or after described original audio signal, and perhaps described characteristic signal can be modulated in the beginning or the end of described audio signal.
In the scope that comes into operation at present, TA signal or the TP signal signal as described sign traffic announcements is used according to the preferred embodiment of the present invention about the standard of traffic news.The audio signal mobile computing machine, that have such signal is handled like this, just look like it be transport information from the traffic transmitter, and enjoy the priority that has precedence over the application that is moving on the audio frequency apparatus that is receiving.
If the ultrashort wave frequency is used as the carrier frequency of the audio signal of mobile computing machine and uses, then reciever can use common and thereby be standard audio equipment cheaply.
Description of drawings
Describe embodiments of the invention in detail according to accompanying drawing below.In the accompanying drawing:
Fig. 1 shows the schematic diagram of the assembly of navigation system and represents, is integrated with mobile computing machine according to the embodiment of the present invention in the described navigation system, and
Fig. 2 shows flow chart, and it describes method according to the embodiment of the present invention.
Embodiment
In the accompanying drawings, identical or corresponding part is represented with same Reference numeral all the time.
Fig. 1 schematically shows the navigation system that has mobile navigation equipment 10, and described mobile navigation equipment 10 is regarded as the particular embodiment of mobile computing machine.Therefore should illustrate that described mobile computing machine can also other forms realize, for example by the mobile portable computer, it is set to be used to receive the Additional Services with wireless radio transmission.
Mobile navigation equipment 10 comprises the guider 11 of carrying out original navigation feature.Described guider 11 can be according to existing techniques in realizing.As everyone knows, guider has usually: be used for the reception antenna of gps signal, so that determine the user's of equipment current location; Storage device, road-map is stored thereon; Input unit is used to import at least one target location; And processor device, it is used for determining the route between described target location and current location and is used for exporting described route and/or described route is indicated output with the audio signal form as the navigation of the sense of hearing on display.Because the assembly of the guider of listing here 11 is known, has omitted the expression to them in the drawings.
Except described guider 11, described mobile navigation system 10 also comprises FM modulator 12, and it is used for the audio signal that the output at described guider 11 provides is modulated to carrier frequency, and described carrier frequency for example can be the ultrashort wave frequency.Should be noted that and in the guider 11 of many prior aries, be integrated with such FM modulator.In this case, then need not the conduct FM modulator of assembly separately.
In addition, encoder 12, itself and described guider 11 (here by described FM modulator 11) are coupled.About this point should be that described encoder 12 needn't be realized as nextport hardware component NextPort by what replenish.It can also be comprised in the processor device of described guider 11 with form of software in fact.By described encoder 12, described encoder 12 for example can be the RDS encoder, gives by the audio signal of guider 11 outputs and the audio signal that has been modulated onto in case of necessity on the carrier frequency and attaches the signal of going up the sign traffic announcements.Described thus audio signal " seems " in face of the user like traffic announcements, and content is not.
Then can be transmitted through the audio signal of so modulation and the audio signal that has a signal of described sign traffic announcements, so that be used as voice output at the receiver place and export by FM transmitter 13.
, as receiving system, use audio frequency apparatus or sound system here, it is generally represented with Reference numeral 20.Described audio frequency apparatus 20 comprises reception antenna 21, can receive the audio signal that is sent by FM reflector 13 by means of described antenna.With regard to transmitting power, should illustrate that described transmitting power should be as far as possible little, so that described modulated audio signal only can be received in several meters very little scope, promptly can only receive by described specific audio devices 20.Because mobile navigation equipment 10 and described audio frequency apparatus 20 usually are used in the motor vehicle jointly, wherein said audio frequency apparatus is fixedly to be built in the motor vehicle, and alleged little coverage area is enough fully for purpose of the present invention.
Described audio devices 20 is important assembly except what comprise this equipment to signal processing and signal amplification, also comprises decoder 22 and speaker unit 23 in addition.Described speaker unit 23 for example can be high-quality element, as what use in the sound system of high-quality.
Characterize the signal of traffic announcements in described decoder 22 places decodings, make function by described signal initiation, for example the enhancing of the quiet unlatching of the current application of audio frequency apparatus and/or the audio signal volume transmitted can be performed.The output of described audio signal through transmitting replaces current application (for example, play CD) at this moment.Described audio signal through transmitting is thus by speaker unit 23, and---being as the navigation indication in the case---is output.
Referring now to Fig. 2, the method step of carrying out at receiving terminal in Fig. 2 illustrates with the Reference numeral of line, the method of carrying out under the situation of the described system of face is so before use, promptly can activate triggering signal, the output of this start trigger signal audio signal by the navigation software of described mobile navigation equipment at first step S10.Described triggering signal causes beginning to locate to introduce the signal that characterizes traffic announcements before described audio signal or in described audio signal at next step S11.At this, step S11 can or be right after before described audio signal is modulated on the carrier frequency thereafter and realize.
Transmit by the FM transmitter at characteristic signal described in next step S12 and described audio signal.Should illustrate that according to the type of encoder, described characteristic signal can together be transmitted before described audio signal or with it.
At receiver-side,, and carry out the function that causes by this signal, for example quiet unlatching of current application at this moment at step S13 ' decoding characteristic signal.Then, cause exporting the audio signal that is received at step S14 ' by the speaker unit of receiver.
When the end of described audio signal, in the navigation software activation triggering signal of sender side by described mobile navigation equipment, this triggering signal causes encoder that the characteristic signal that the described audio signal of another mark finishes is set in step S15.As already explained, two characteristic signals for example can be TA signal or TP signal.
This moment, described another characteristic signal arrived receiver, in the end one went on foot S16 ', and the function that is caused by described first characteristic signal stops again.In other words, the audio frequency apparatus of receiver turns back to that application of carrying out before described first characteristic signal receiving, for example play CD.By this way, the function of described mobile navigation equipment and audio frequency apparatus can be used by parallel basically.
With respect to prior art, according to mobile computing machine of the present invention, especially in its execution mode, provide many advantages as mobile navigation equipment, some advantages wherein are described.In a word, described mobile navigation equipment combines traditional mobile navigation equipment advantage and as usually in the advantage of the fixing built-in high quality audio that navigation system had output cheaply.
Be used for the original application of fixing built-in sound system audio frequency apparatus, for example vehicle of audio frequency output, here only must be interrupted momently, this makes mobile navigation system can be used concurrently with the entertainment applications that is provided by sound system becomes possibility.With respect to traditional mobile navigation equipment, mobile navigation equipment according to the embodiment of the present invention only needs to acquire a spot of attachment device, and it partly can be realized by economic software solution.For this reason, with respect to the mobile navigation system of prior art, manufacturing cost only slightly increases.

Claims (14)

1. adopt the mobile computing machine of modulated audio signal, comprising:
Have the audio output that is used for output audio signal the functional processing apparatus, be used for described audio signal is modulated to the FM modulator (12) on the carrier frequency, the FM reflector (14) that is used to modulate the encoder (13) of the described audio signal that has the signal that characterizes traffic announcements and is used to send described audio signal, wherein, described FM reflector (14) is set to send with the power of not enough 50nW.
2. according to the mobile computing machine of claim 1, it is characterized in that described mobile computing machine is constructed to navigator (10), described functional processing apparatus is constructed to guider (11).
3. according to the mobile computing machine of claim 1, it is characterized in that described FM modulator (12) is set to use the ultrashort wave frequency as carrier frequency.
4. according to the mobile computing machine of one of aforesaid right requirement, it is characterized in that described encoder (12) is the RDS encoder, and the signal of described sign traffic announcements is TA signal or TP signal.
5. according to the mobile computing machine of one of aforesaid right requirement, it is characterized in that described encoder (12) is realized as component software or nextport hardware component NextPort.
6. navigation system, as long as based on claim 2, just comprise mobile navigation equipment (10) and audio devices (20) according to one of aforesaid right requirement 2 to 5, described audio devices (20) is furnished with the reception antenna (21) that is used to receive through being modulated to the audio signal on the carrier frequency, the decoder (23) of the signal that characterizes traffic announcements of being used to decode and be used to export the speaker unit (22) of described audio signal.
7. be used for the method by the modulated audio signal transmission information of mobile computing machine, described mobile computing machine is set for output audio signal, and described method comprises:
-modulation has the audio signal of the described mobile computing machine of the signal that characterizes traffic announcements;
-described audio signal is modulated on the carrier frequency;
-send described audio signal,
Wherein, described audio signal is sent by the power with not enough 50nW.
8. according to the method for claim 7, it is characterized in that the output signal of mobile navigation equipment is used as audio signal.
9. according to the method for claim 7 or 8, it is characterized in that the signal of described sign traffic announcements comprises first and second characteristic signals, it identifies the beginning and the end of described audio signal.
10. according to the method for claim 9, it is characterized in that TA signal or TP signal are used as the signal of described sign traffic announcements.
11. the method according to one of aforesaid right requirement is characterized in that the ultrashort wave frequency is used as carrier frequency and uses.
12. computer program comprises the program part that is used for carrying out according to the method for 7 to 11 at least one of aforesaid right requirements.
13. machine-readable, especially computer-readable data structure, described data structure is by requiring in 7 to 11 at least one method and/or generating by at least a computer program according to claim 12 according to aforesaid right.
14. machine-readable, especially computer-readable data storage medium, record and/or storage be according at least a computer program of claim 12 on described data storage medium, and/or have on described data storage medium according at least a data structure of claim 13 and be called being used to.
CN2010105007390A 2009-10-01 2010-09-30 Mobile computer device using a modulated aural signal and method for transmitting information in aid of the modulated aural signal Pending CN102035612A (en)

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DE102009045226A DE102009045226A1 (en) 2009-10-01 2009-10-01 Mobile computer device i.e. mobile navigation device, for use in motor vehicle, has encoder modulating audio signal with characteristic signal, and transmitter transmitting audio signal with specified low power

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Application publication date: 20110427