KR20080071444A - In-vehicle composite audio device and method for storing Al-DS information - Google Patents

Abstract

A vehicular composite audio device and a method for storing Al-DS information thereof are disclosed. Such an in-vehicle composite audio device includes a frequency state monitoring unit for monitoring a state of a tuned frequency, a database unit storing Als information allocated to each radio frequency, and a state of the frequency monitored by the frequency state monitoring unit. By including a control unit for controlling compared with the information stored in the information, the conventional navigation and car audio can only receive and display the Al-DS information in the FM radio mode, and stores the information in other audio device use mode Improve the problem that can not be.

Description

COMPLEX AUDIO APPARATUS FOR VEHICLE AND METHOD FOR RECORDING RADIO DATA SYSTEM INFORMATION THEREOF}

1 is a block diagram showing the configuration of a conventional DAB / DSS receiver;

2 is a block diagram showing the configuration of a vehicle composite audio device according to an embodiment of the present invention.

<Explanation of symbols for main parts of the drawings>

210: antenna 220: tuning unit

230: RDS decoder 240: frequency state monitoring unit

250: control unit 260: database unit

The present invention relates to a Radio Data System (RDS), and more particularly, to a method for storing RDS information in a radio data system in a non-radio mode.

In general, the RDS function in the FM radio mode is important for equipment such as an audio video navigator and a car audio.

RDS is a method of multi-transmitting control codes or digital data by using a subcarrier in an FM broadcast, and the frequency of the subcarrier in the spectral margin of the existing FM broadcast (50 to 100 KHz) is equal to 3 of the pilot frequency (19 KHz). Digitally multiplex more than 16 codes near the ship (57KHz) or near the ship 4K (PSHz) with PSK (Phase Shift Key) balanced modulation to auto tune, station name, traffic information, text broadcasting, time information, weather information and wireless It is a method of providing various services such as calling.

Aldie's has been developed based on the German Autofahre rundfunk (ARI) and Sweden's PI (Programme identification / public information) system for the purpose of wireless reception service for the selective reception of traffic information broadcasting.

These road traffic information channels represent the characteristics of Aldies introduced throughout Europe, and in order to receive and decode traffic-related messages in the car, such as traffic accidents, accurate local guidance, inter-regional distance information, weather information and return to construction. In addition to RDS car audio, a decoder is required.

Aldies sends 20 messages per minute to the accompanying program without interruption of the radio program, all traffic information is stored on the car receiving device, and traffic messages are routed according to personal driving routes.

In addition, with the help of European standardized standards and language-aware computers, various information can be called up in various languages.

1 is a block diagram showing the configuration of a conventional DB / RX receiver.

Referring to FIG. 1, a tuning unit 109 for tuning a specific frequency among FM frequencies using a car audio including a DA / ALS receiver, and a specific frequency carried on a frequency received by the tuning unit 109. A demodulation unit 105 for demodulating the radio signal, a radio reproduction unit 107 for listening to radio broadcasting using a specific frequency demodulated by the demodulation unit 105, and a storage medium in which audio data is stored. The audio reproducing unit 106, the audio reproducing unit 108 and the radio reproducing unit 107 for amplifying and outputting an audio signal output from the radio reproducing unit 107 or the audio reproducing unit 106, and audio The control unit 104 controls the playback unit 106 and the audio amplifier unit 108.

The audio reproducing section 106 includes a memory or cassette player of a storage medium and a CD player.

Hereinafter, the operation of the conventional DB / ALS receiver of FIG. 1 will be described.

When a user selects a mode for playing the audio playback unit 106 and a driving signal is input from the user's key input 101 to the controller 104, the controller 104 drives the audio playback unit 106 and outputs the driving signal. One audio signal is output through the audio amplifier unit 108.

At this time, the control unit 104 applies a control signal to stop the driving to the tuning unit 109 to turn off so that the tuning unit 109 does not select a specific frequency received by the antenna 103.

In addition, if the user selects the mode of playing the radio playback unit 107, the control unit 104 applies the control signal to stop the driving of the audio playback unit 106 to drive the audio playback unit 106. After stopping, the tuning unit 109 selects and receives a channel of a radio frequency desired by the user by tuning a radio broadcasting frequency preset by the user or selected by the user among radio frequencies applied from the antenna 103.

The received radio signal is signal processed and output through the audio amplifier.

As described above, equipment such as complex navigation and car audio has a great importance for the Als function in the FM radio mode. In addition to the FM information in the FM radio mode, when the user is listening to another audio device (for example, CD player or DVD), there is a great need for the function of utilizing and storing the information.

That is, in the conventional navigation and car audio, only the FM information can be received and displayed in the FM radio mode. For example, in the modes of CD, DVD, DVD, DAB, etc. There was a problem that can not save the RDS information.

In addition, in the conventional navigation and car audio, the terminal with the RDS function records the tuned frequency information in the state of the radio mode RADIO and uses the stored information while the RDS operation is set. In this case, there is a disadvantage in that it is not possible to store Al-DS information when listening to other audio. In other modes, there is an urgent need for a way to overcome this drawback by changing the program to receive and store RDS information.

Accordingly, an object of the present invention is to provide a vehicle navigation system for improving the problem that the conventional navigation or car audio can only receive and display the Al-DS information in the FM radio mode, and can not store the Al-DS information in other audio device use modes. An object of the present invention is to provide an audio device and a method for storing RDS information.

It is another object of the present invention to record information of a tuned frequency in a state in which an audio mode is radio (RADIO) in a terminal having an RDS function in a conventional navigation and car audio, and to store information stored in an RDS operation. The present invention provides a vehicle composite audio device and an RDS storage method for improving a problem caused by use.

It is still another object of the present invention to provide a hybrid audio device for a vehicle that collects Al-DS information of the entire band even when not in a radio mode, and a method for storing the Al-DS information by the same.

It is still another object of the present invention to provide a hybrid audio device for a vehicle capable of reducing a reception confirmation time of an RDS information and a method for storing the RDS information by the same.

According to an aspect of the present invention, there is provided a vehicle composite audio apparatus including: a frequency state monitor configured to monitor a state of a tuned frequency; A database unit for storing Al-SDS information allocated to each radio frequency; And a control unit for controlling the state of the frequency monitored by the frequency state monitoring unit by comparing the state of the frequency with the RDS information stored in the RDS information.

The RDS information may include at least one of a unique code number of each broadcasting station, an alternative frequency of each broadcasting station, a traffic broadcasting notification, a traffic broadcasting program, and radio text information.

According to an aspect of the present invention, there is provided a method for storing Als information of a composite audio device for a vehicle, when the audio device is not in a radio mode, collecting Als information of a frequency band of a corresponding region. In order to scan for each frequency by allocating for a predetermined time, it is characterized in that to collect the corresponding DS information.

In addition, when the user sets the traffic broadcasting notification, the method may include scanning the traffic broadcasting notification bits in all frequency bands and switching the audio device to the traffic broadcasting notification mode when the traffic broadcasting notification bits are scanned.

In addition, if the traffic broadcast notification bits are not scanned in all frequency bands may include monitoring whether or not the traffic broadcast-related dies information bits are received while maintaining the radio frequency selected by the user during the first holding time. .

The method may include storing the Als information of the changed frequency during the second holding time by changing the frequency when the Als information bit is not received in the monitoring step.

In addition, the first holding time may be 8 ms, and the second holding time may be 320 ms.

In addition, after storing the RDS information, the RDS information is monitored again using a user selected radio frequency, and after tuning to a frequency different from the user selected radio frequency after the first holding time elapses, And receiving the RDS information for the two retention times.

In addition, when the user does not set the traffic broadcast notification, it may include the step of receiving the RDS information while changing the frequency in the entire frequency band for a predetermined time.

In addition, in the receiving of the RDS information, when the user presses a radio button while receiving the RDS information may be switched to the radio mode.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. The following descriptions are only examples and illustrated without any other intention, except for the purpose of helping a person having ordinary knowledge in the art to which the present invention pertains, to limit the scope of the invention It shall not be used.

2 is a block diagram showing the configuration of a vehicle composite audio device according to an embodiment of the present invention.

Referring to FIG. 2, the frequency state monitoring unit 240, the control unit 250, and the database unit 260 are illustrated.

The frequency state monitoring unit 240 is a part for monitoring the state of the frequency of the signal tuned by the tuning unit 220.

The database unit 240 is a part that stores the Al-SID information allocated to each radio frequency.

The controller 250 is a part of controlling the state of the frequency monitored by the frequency state monitoring unit 240 by comparing with the Als information stored in the Als information.

The RDS information may include at least one of a unique code number of each broadcasting station, an alternative frequency of each broadcasting station, a traffic broadcasting notification, a traffic broadcasting program, and radio text information.

Next, a method for storing Als information of a composite audio device for a vehicle according to an embodiment of the present invention will be described.

According to an embodiment of the present invention, a method for storing Al-Dess information of the in-vehicle composite audio device may include collecting the Al-Dies information of a frequency band of a corresponding region when the in-vehicle composite audio device is in a non-radio mode instead of a radio mode. It allocates for a predetermined time, characterized in that to collect the corresponding information while scanning each frequency.

The non-radio mode may vary from CD (CD), MP3 (MP3), DVD (DVD), DMB (DMB) and the like.

In this case, the time should be divided into two cases for the collection of full frequency band ALS data.

First, when the user sets the traffic broadcasting notification, that is, when the user sets the traffic broadcasting notification in the non-radio mode, it scans whether there is a traffic broadcasting notification bit in all frequency bands. If the traffic broadcast notification bit is scanned after such a scan, the audio device is switched to the traffic broadcast notification mode.

If the user sets the traffic broadcasting notification but the traffic broadcasting notification bit is not scanned in all frequency bands, whether or not the traffic broadcasting related DS information bit is received while maintaining the radio frequency selected by the user during the first holding time. Monitor it.

The first holding time may be approximately 80 ms.

In the step of monitoring whether the RDS information bit is received or not, if the RDS information bit is not received, the frequency may be changed to store the RDS information of the changed frequency during the second holding time.

The second holding time may be approximately 320 ms.

After storing the RDS information, the RDS information is monitored again using a user selected radio frequency, and after the first maintenance time has elapsed, the TDS is tuned to a different frequency from the user selected radio frequency. It is possible to receive the ALS information during the holding time.

If the user does not set the traffic broadcasting notification, it is possible to receive the Als information while changing the frequency in all frequency bands for a predetermined time.

In the receiving of the RDS information, when the user presses a radio button while receiving the RDS information, the radio mode may be switched.

As described above once again embodying a method for storing RDS information according to an embodiment of the present invention as described above.

According to an embodiment of the present invention, a method of storing RDS information is another audio mode other than a radio mode, for example, in case of CD, MP3, DVD, DMB mode, the sound is other audio, but the tuning unit has recently selected the user. Tunes to a frequency and stores that frequency value for use in recovery when returning from other audio modes to radio mode.

Here, if the user has selected to listen to traffic broadcasting, scan whether there is traffic broadcasting in all frequency bands, and if traffic broadcasting exists, change to traffic broadcasting mode, and if not, tune to the user's latest frequency and set a predetermined time ( For example, 80ms) waits for traffic broadcasting ALS information. Upon receiving the traffic broadcasting RDS information, the system changes to the traffic broadcasting mode. Otherwise, the frequency is received at the new frequency for a predetermined time (for example, 320 ms). Then, while repeatedly performing the above process, it collects RDS information in all frequency bands and stores RDS information for each frequency in the database unit 260 of FIG.

If the user does not choose to listen to the traffic broadcast, while scanning the entire frequency band, and collects the corresponding information of the Als and stores the information of the Als for each frequency in the database unit.

If the user enters the radio mode while collecting the Al-DS information to store the Al-S information, the process is stopped and the Al-SDS information on the scanned frequency is stored. In addition, when the user selects another audio mode again, the user collects RDS information by scanning from a frequency after the previously searched frequency.

In this way, the present invention can solve the problem that conventional navigation or car audio can receive and display the Al-DS information only in the FM radio mode and not store the Al-DS information in other audio device use modes.

The hybrid audio device for a vehicle according to the present invention and the method for storing Al-DS information by the same are not limited to the above embodiments and can be variously designed and applied without departing from the basic principles of the present invention. It will be obvious to those of ordinary skill in the field.

As described above, the present invention provides an improved in-vehicle composite audio device and a method for storing Als information thereof, whereby conventional navigation or car audio can receive and display Als information only in FM radio mode and display other audio. In the device use mode, there is an effect of solving the problem of failing to store the RDS information.

In addition, the present invention provides an improved vehicle composite audio device and a method for storing Al-DS information thereof, and thus, in a terminal having an R-DS function in conventional navigation and car audio, information of a tuned frequency in a state where the audio mode is a radio can be obtained. It has the effect of solving the problem caused by using the stored information in the state that the recording and the RS operation is set.

In addition, the present invention provides an improved vehicle composite audio device and a method for storing Al-DS information thereof, by collecting and storing the Al-DS information in all frequency bands in advance when the sound output from the terminal is not the sound output from the radio. If the current frequency is bad when operating as in the alternative frequency operation and traffic broadcasting listening function has the effect of reducing the operation time of the acknowledgment of the ADS information.

Claims (12)

A frequency state monitoring unit for monitoring a state of the tuned frequency; A database unit for storing Al-SDS information allocated to each radio frequency; And And a control unit for controlling the state of the frequency monitored by the frequency state monitoring unit by comparing the state of the frequency with the AlS information stored in the AlS information. The method of claim 1, The RDS information includes at least one or more of a unique code number of each broadcasting station, an alternative frequency of each broadcasting station, traffic broadcasting notification, traffic broadcasting program and radio text information. In the method for storing the Als information of the vehicle composite audio device: When the audio device is in a non-radio mode instead of a radio mode, the audio device collects the corresponding Al-DS information while scanning each frequency by allocating for a predetermined time to collect the Al-S information of the frequency band of the region. How to save DS information. The method of claim 3, The non-radio mode is one of the CD mode, MP3 mode, DVD mode and DM mode, characterized in that any one of the information storage method. The method of claim 3, When the user sets the traffic broadcasting notification, scanning for the presence of a traffic broadcasting notification bit in all frequency bands, and when the traffic broadcasting notification bit is scanned, converting the audio device into a traffic broadcasting notification mode. How to save DS information. The method of claim 5, If the traffic broadcast notification bit is not scanned in all frequency bands, monitoring whether or not a traffic broadcast-related dies information bit is received while maintaining a radio frequency selected by a user during a first holding time; How to save RDS information. The method of claim 6, And if the RDS information bit is not received in the monitoring step, changing the frequency and storing the RDS information of the changed frequency during the second holding time. The method of claim 6, And the first holding time is 8 ms. The method of claim 7, wherein And the second holding time is 320ms. The method of claim 7, wherein After storing the RDS information, again monitoring the reception of the RDS information related to traffic broadcasting at a user selected radio frequency and tuning to a frequency different from the user selected radio frequency after the first maintenance time elapses after the second maintenance. And receiving the RDS information for a time. The method of claim 3, If the user does not set the traffic broadcasting notification, receiving the Als information by changing the frequency in the entire frequency band for a predetermined time, characterized in that it comprises a step. The method of claim 9 or 10, In the step of receiving the RDS information, when the user presses a radio button while receiving the RDS information, it is switched to the radio mode, characterized in that the radio mode.

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