KR20000038161A - Method for displaying character information in car audio system - Google Patents

Abstract

PURPOSE: A method for displaying character information in a car audio system is provided to allow a car driver to recognize a current channel of a broadcasting station and select a desired channel thereof easily, by displaying the character information such as a name of the broadcasting station as well as numeric information on channel frequencies thereof in a receivable frequency band. CONSTITUTION: If an operation mode of an audio system is set as a radio mode(S10), a desired channel of the broadcasting station is selected(S12). A desired character information is inputted and then stored in a corresponding area of a memory for the selected channel(S14-S18). The character information for each of the channels is inputted until the input of the character information for each channel is completed(S20). If the input thereof has been completed, a channel desired to be received is selected(S22) and a frequency intensity of the received signal from the selected channel is detected(S24). It is determined that the received signal is receivable(S26). The character information on the selected channel is displayed(S28-S32).

Description

How to Display Character Information in Car Audio Systems

The present invention relates to a method of displaying character information in a car audio system, and more particularly, to a car audio system in which other information such as a frequency of a broadcast station channel that can be received and a broadcast station name for a broadcast channel received at the corresponding frequency can be input. Character information display method.

In general, the car audio system is an audio system attached to a car so that high quality music can be listened to in a car in order to meet the demands of modern people in which car life is generalized. As a specification, a compact disk player (CDP) or the like is provided so that various music can be listened to in the vehicle according to the driver's preference.

On the other hand, the dash panel located in front of the driver has an operation state of the car audio, that is, a play state and a song when listening to music through a tuned radio channel and a cassette tape or a compact disc when listening to a radio station. A display unit for displaying numbers and the like is provided.

When operating a radio mode in a conventional car audio system, the radio tuner performs tuning to receive a frequency signal transmitted from a currently set broadcast station and output it through a speaker. In this case, the frequency of the specific broadcast channel received is displayed on the display unit. For example, if the currently set station channel is FM 91.9 MHz, the station frequency of "FM 91.9 MHz" is displayed on the display unit, and the driver sees the frequency displayed on the display unit and the currently receiving broadcast channel is MBC FM (In case of Seoul). Will be recognized as).

However, if the driver is not aware of the frequency set for each station, when the driver can receive 6 to 12 station signals at the current vehicle position, the driver must perform a plurality of key operations to receive the desired station channel. In addition, the driver may not easily recognize when the signal of the desired broadcasting station channel cannot be received at the current location.

Accordingly, the present invention has been made to solve such a conventional problem, and its purpose is to display the character information such as the station name as well as the numerical information on the station channel frequency within the receivable broadcast frequency band, thereby allowing the driver to present It is an object of the present invention to provide a character information display method of a car audio system in which a received broadcasting station can be easily recognized and a desired broadcasting station channel can be easily identified.

1 is a block diagram showing the configuration of a car audio system for implementing the present invention.

2 is a flowchart illustrating a text information display method of a car audio system according to the present invention.

Explanation of symbols on the main parts of the drawings

10 ... antenna 20 ... FM / AM tuner section

30.Tape player 40.Input selector

50 ... signal processing section 60 ... volume control section

70 ... Amplifier 80 ... Speaker

90 Display unit 100 Microprocessor

110 Memory 120 Key Input

In order to achieve the above object, the method of displaying character information of a car audio system according to the present invention includes (a) receiving a selection of a broadcasting station channel to which text information is to be input when the operation mode of the car audio is set to a radio mode; When the corresponding broadcast channel is selected, receiving the character information to be input and storing it in the corresponding broadcast channel area of the memory; (c) Determining whether the character information for each broadcast channel is completed, and inputting the character information is not completed. In the case of repeating the above steps (a) and receiving character information for each broadcasting channel, and (d) if the character information input for each channel is completed as a result of the determination of step (c), the broadcasting channel to be received. Receiving a selection and displaying character information on the selected broadcasting channel.

In addition, the character information display method of the car audio system according to the present invention (e) when receiving the broadcast channel input character information detects the strength of the received broadcast frequency signal, the strength of the detected signal is a preset reference value (B) if the signal strength of the received frequency is less than the reference value, determining that it is a non-receivable channel and comparing only the frequency information of the corresponding channel with a warning sound. And displaying the frequency information or text information of the corresponding channel according to the driver's selection signal and receiving the frequency signal of the corresponding channel according to the driver's selection signal.

Hereinafter, with reference to the accompanying drawings, the configuration and operation of the character information display method of the car audio system according to a preferred embodiment of the present invention will be described in detail.

1 is a system block diagram showing the configuration of a car audio system for implementing the present invention. As shown in FIG. 1, a car audio system for implementing the present invention is an FM for separating and outputting an audible frequency from an FM / AM radio wave received from an antenna 10 that receives an FM / AM broadcast radio wave transmitted from a broadcasting station. / AM tuner unit 20, the tape player 30 for controlling the reproduction operation of the audio signal stored in the cassette tape, and the FM / AM tuner unit 20 and the control under the control of the microprocessor 100 to be described later The input selector 40 includes an input selector 40 for selectively receiving an audio signal input from an output medium (not shown) including the tape player 30, and a filter or a gain control circuit for passing only a specific frequency region. The signal processor 50 performs a signal processing of the audible frequency signal outputted from a) and is output from the signal processor 50 under the control of the microprocessor 100. A volume control unit 60 for adjusting an audio signal to a set volume level, an amplifier 70 for amplifying an analog voltage of an audible frequency into a power signal of a predetermined level, and outputting a signal amplified by the amplifier 70. A speaker 80, a key input unit 120 that receives various key operation signals for controlling the operation of car audio from a driver, and outputs a driving state of a car audio system and the presence or absence of a reception channel on a screen such as an LCD. The display unit 90, a memory 110 for storing the system driving program and the station frequency and text information input from the user, and receiving each station information from the driver and storing the station information at the corresponding station frequency and receiving the text when receiving the station. The microprocessor 100 for outputting a predetermined control signal so that the information and the frequency information can be displayed on the display unit 90 simultaneously or respectively. By made.

In the above-described configuration, although not shown in the key input unit 120, a channel selection key (TUNE UP / DOWN) for selecting a radio broadcast channel transmitted from the antenna 10 and the selected radio reception channel are assigned to a specific numeric key. A plurality of preset memory keys M1 to M6 provided for memory, a volume key for adjusting the signal size of a received broadcast channel, and a broadcast channel for a broadcast frequency band that can be received at the current location are automatically generated. An automatic search key (SCAN) for searching and storing in the preset memory key and a band key for selecting a radio operation mode are provided.

In this configuration, as an embodiment for implementing the present invention, the band key BAND is used as a storage button for storing character information when a character information of each broadcasting station is to be input in a radio operation mode. In addition, the channel selection key is used as a key for moving the cursor to sequentially select the character information output to the display unit 90. That is, when it is determined that the band key is input during the operation of the radio mode, the microprocessor 100 sequentially outputs the character information, that is, the Korean consonant, the vowel, the numbers, and the alphabet, which are pre-stored in the display unit 90. At this time, the driver selects the output character using the channel selection key, and selects and inputs the character of "traffic broadcast (TBS)" sequentially in the case of 95.7 MHz, and then inputs the band key again. Save character information set in frequency.

In addition, the display unit 90 may use a liquid crystal display (LCD) or a vacuum fluorescent display (VFD) so as to display the character information according to the present invention.

Hereinafter, a method of displaying character information of a car audio system according to the present invention will be described in detail with reference to a preferred embodiment.

2 is a flowchart illustrating a text information display method of a car audio system according to the present invention. As shown in FIG. 2, the text information display method of the car audio system according to the present invention first determines whether the operation mode is set to the radio mode in a state in which power is currently applied to the car audio system in step S10. do. In this case, if it is determined that the radio mode is not set, the process proceeds to step S36. For example, in the case of the tape mode, the tape player 30 is operated to perform the corresponding function.

On the other hand, if the radio mode is set, the process proceeds to step S12 to receive a corresponding broadcast channel to be received from the driver. In this case, when the selection signal of the broadcasting station channel is not input from the driver, the signal of the preset broadcasting channel is received and output when the power is applied, and if the selection signal of the broadcasting station channel is input from the driver, the FM / AM tuner unit ( Receives and outputs the corresponding broadcasting frequency according to the tuning frequency of 20).

At this time, in step S14, it is determined whether key input from the driver is input or not to input text information on the received and selected broadcast station channel. That is, in this case, when it is determined that the driver wants to input the character information for the corresponding broadcasting station channel by inputting the band key BAND, the process proceeds to step S16 to receive the character information.

That is, in step S16, the microprocessor 100 reads the character information stored in the memory 110 and outputs the character information to the display unit 90, and the driver uses the channel selection key as the character information output to the display unit 90. By selecting sequentially through the through to set the character information for the broadcast station channel. At this time, for example, when the driver selects a broadcasting channel of 107.7 [MHz], the character “SBS Power FM” is sequentially selected as the character information. When the selection of the text information on the corresponding broadcast channel is completed, the driver inputs a band key again to store the text information of the corresponding broadcast channel in the memory. That is, in step S18, it is determined whether the band key BAND is input and the selected character information is stored in the corresponding broadcast channel region of the memory.

In the next step S20, for example, it is determined whether the band key BAND is input to determine whether to continue inputting character information for another broadcast channel. In this case, if the band key is not input, the character information input function for the other channel is performed by returning to the step S12 and repeatedly performing the following steps to input the character information for the other broadcast channel.

As described above, when the character information input for the broadcast channel to which the character information is input is completed by repeatedly performing the operations from the step S12 to the step S18, in step S22, the broadcast channel to be listened to is selected from the driver. Will receive.

In this case, as the reception broadcast frequency is selected, the FM / AM tuner unit 20 selectively receives the selected broadcast frequency signal from the broadcast frequency of the corresponding channel received through the radio antenna 10, and in step S24, the received frequency. The strength of the signal (that is, the electric field strength) is detected and compared with a predetermined reference value to determine whether or not it can be received. As a result of the comparison, when the strength of the received signal is weaker than the reference value, it is determined that reception of the selected broadcast channel is impossible, and the operation proceeds to step S38 to generate an alarm sound indicating that the reception is impossible. , Only “FM 107.7 [MHz]” is displayed on the display unit 90.

On the other hand, if it is determined that the frequency signal strength of the received channel is stronger than the preset reference value as a result of the comparison in the step S26, the process proceeds to step S28 to drive the FM / AM tuner unit 20 to correspond to the channel. Receives a frequency signal of and outputs it as an audible signal.

Further, in step S30, it is selected whether to display text information on the broadcast channel received from the driver or only frequency information. At this time, if the driver inputs a predetermined key to display the text information, in step S32, the display unit 90 outputs the text information of the broadcasting channel currently being received, that is, "SBS power FM". On the other hand, if the character information is not displayed, frequency information of the broadcast channel being received, that is, "FM 107.7 [MHz]" is output to the display unit 90 so that the driver can recognize the current broadcast channel.

The character information display method of the car audio system according to the present invention is not limited to the above-described embodiments, and may be modified in various ways within the scope of the technical idea of the present invention.

As described above, the character information display method of the car audio system according to the present invention inputs the character information so that each radio broadcast channel can be easily identified from the driver, and sets the character set when listening to the corresponding broadcast channel. Allows information to be output to the display.

Accordingly, the driver can easily identify a broadcast channel through information such as a broadcast station name, for example, text information output for a radio broadcast channel currently being received by the method of displaying text information of a car audio system according to the present invention. It is possible to reduce the risk of accidents by reducing the number of key manipulations to find a radio broadcast channel while driving, and the desired broadcast channel can be easily found.

Claims (2)

(A) when the operating mode of the car audio is set to the radio mode, selecting a broadcasting station channel for inputting text information; (B) if the corresponding broadcast channel is selected, receiving character information to be input and storing the received character information in the corresponding broadcast channel area of the memory; (C) determining whether or not to complete the character information input for each broadcast channel; if the character information input is not completed, repeating the steps (a) and receiving the character information for each broadcast channel; (D) if the character information input for each channel is completed as a result of the determination of step (c), selecting a broadcast channel to be received and displaying the text information on the selected broadcast channel; How to display character information of the car audio system. The method of claim 1, (E) detecting the strength of the received broadcast frequency signal when receiving the broadcast channel to which the character information is input, and comparing the detected signal strength with a preset reference value to determine whether the broadcast signal is receivable; (F) When the signal strength of the received frequency is less than the reference value as a result of the comparison of the step (e), it is determined that the channel is not available to receive and displays only the frequency information of the corresponding channel with a warning sound. And displaying the frequency information or the character information of the corresponding channel and receiving the frequency signal of the corresponding channel.