JP2007240161A - Navigation system, audio system, car audio system, method for controlling them, and control program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To effectively secure the listenability of audio while stabilizing sound volume and sound quality by automatically changing equalizer settings of an audio system according to the type of road such as a general road and an express way. <P>SOLUTION: A determination transmission means 73 determines the type of road of a road section in which one is currently traveling and which includes at least a general road or an express way on the basis of positional information determined by a means 71 for acquiring the position of a self-vehicle and map data 5 stored in a map data storage part 50 and transmits information indicating the type of road to the audio system 2 via a connecting part 16 and a signal transmission path R. A changeover part 81 of the audio system 2 reads equalizer setting patterns from a setting storage part 80, specifically, a pattern P1 for general roads, a pattern P2 for express ways, or the like according to the type of road indicated by the received information and sets and applies them to an equalizer part 23. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an improvement in technology related to car audio.

  In recent years, with the widespread development of automobiles and electrical technology, car audio systems are being used in various drive scenes, but the technical problem that has conventionally existed in the field of this type of in-vehicle audio is to a certain degree of speed, It is difficult to hear the reproduced sound due to so-called road noise generated during traveling.

One countermeasure to this problem is to change the volume in the audio device 11 in accordance with the vehicle speed determined from the vehicle speed pulse from the vehicle 22 as illustrated in FIG. In addition, since changes in road noise include changes in frequency components, it is considered that volume control is not sufficient, and there are proposals for controlling the frequency level of low and high frequencies according to the speed to be judged in the same way. (For example, Patent Document 1).
JP2004-228937

  However, road structures and road conditions and road noise differ between ordinary roads and expressways, and the volume and sound quality are unstable in the control according to the driving speed that tends to change depending on the road location and situation. For example, there are problems that cannot be solved by conventional techniques.

  The present invention solves the problems of the prior art as described above, and its purpose is to automatically change the equalizer setting of the audio device according to the type of road such as a general road or a highway, thereby increasing the volume and sound quality. It is to ensure the ease of listening to the sound effectively while stabilizing the sound.

The present invention achieves the above object as follows. In addition, each claim of the apparatus will be described here, and the method and the program are the same and will be omitted. Within each claim, the set of each claim in which the inventions that are close to each other are viewed in different categories (apparatus, method, program) and the positioning of each claim are as follows.
(Claims 1, 6 and 11): High-level expression on the navigation side,
(Claims 2, 7, and 12): Specific expression on the navigation side,
(Claims 3, 8, and 13): High-level expression on the audio side,
(Claims 4, 9, and 14): Specific expression on the audio side,
(Claims 5 and 10): Combined overall system.

  Specifically, the navigation device of claim 1 includes a host vehicle position acquisition unit that acquires host vehicle position information, a map data storage unit that includes a road type, and a host vehicle obtained by the host vehicle position acquisition unit. Based on the position information and the map information stored in the map data storage unit, navigation means for determining which road the vehicle is traveling on, position information obtained by the vehicle position acquisition means, Based on the map data including the road type, the road type corresponding to the host vehicle position is determined, and the road type determination transmission means for transmitting the information indicating the determined road type to the audio device connected to the navigation device; It is characterized by having.

  The invention of claim 2 is a navigation sensor group for acquiring current position information of the own vehicle, an audio device having an acoustic reproduction means for reproducing sound, and a connection portion for connection by a signal transmission path, at least In a navigation apparatus comprising a map data storage unit that stores map data in which road types such as general roads or expressways are set for each road section, and a computer calculation control unit, the calculation control unit includes: A position acquisition unit, a navigation unit, and a determination transmission unit are realized. The host vehicle position acquisition unit acquires a current position coordinate of the host vehicle by the navigation sensor group and stores it in the map data storage unit. It is configured to determine position information including which road section in the map data the current vehicle is currently located by map matching processing with the map data being processed. The navigation means calculates a route to the destination and provides guidance based on the position information determined by the vehicle position acquisition means and the map data stored in the map data storage unit. The determination transmission unit is configured to determine whether the road section currently being traveled is based on the position information determined by the vehicle position acquisition unit and the map data stored in the map data storage unit. A road type including at least a general road or a highway is determined, and information indicating the road type is transmitted to the audio device via the connection unit and the signal transmission path.

  The invention of claim 3 is an audio device connected to the navigation device, a setting storage unit that stores an equalizer setting according to a road type, a road type receiving unit that receives a road type sent from the navigation device, An equalizer search means for searching an equalizer setting corresponding to the road type received by the road type reception means from the setting storage unit; an equalizer setting means for setting the equalizer setting searched by the equalizer search means in an audio device; , Provided.

  The invention according to claim 4 is a connection for connecting by a signal transmission path to a navigation device for calculating a route to a destination and guiding guidance based on map data stored in advance and position information obtained by a navigation sensor group. A sound reproducing means for reproducing sound from a speaker, an equalizer for adjusting a level for each frequency band of sound reproduced by the sound reproducing means, and an arithmetic operation of an electronic control circuit or a computer that is a control part of the audio device In the audio apparatus including a setting storage unit and a switching unit realized by the control unit, the setting storage unit includes a plurality of units corresponding to each road type of at least a general road or a highway for the equalizer unit. An equalizer setting pattern of a type is stored in advance, and the switching unit passes through the signal transmission path and the connection unit from the navigation device, A receiving unit for receiving information indicating a road type including whether the road section being traveled is at least a general road or a highway, and the equalizer setting pattern according to the road type represented by the information received by the receiving unit And a switching unit that reads from the setting storage unit and applies settings to the equalizer unit.

  A car audio system according to a fifth aspect is characterized in that the navigation apparatus according to the first or second aspect and the audio apparatus according to the third or fourth aspect are combined by connecting them through a signal transmission path.

  As described above, by automatically changing the equalizer settings of the audio device according to the type of road such as a general road or a highway, it is possible to effectively ensure the ease of listening to sound while stabilizing the volume and sound quality. Is possible. In addition, since it is not necessary for the user to manually set the equalizer of the car audio according to the location, safety is further improved.

  Next, the best mode for carrying out the present invention will be described with reference to the drawings. It should be noted that the assumptions common to the matters already described so far, including background technology and problems, are not repeated.

[1. Overview〕
As shown in the configuration diagram of FIG. 1, the present embodiment is an overall system in which a navigation device 1 and an audio device 2 are combined by connecting them with a signal transmission path R such as an electric or optical signal cable or radio wave. It is a car audio system (hereinafter referred to as “this system”), and can be grasped as a control method and control program for each device 1 and 2 and the entire system.

  As an outline, the navigation device 1 performs route calculation and guidance to a destination based on map data 5 stored in advance and position information obtained by a navigation sensor group such as the GPS unit 3, Based on these data and information, there is provided a determination transmission means 73 for determining the type of road currently running and transmitting information representing the type of road to the audio device 2.

  On the other hand, the audio device 2 includes switching means 81 that automatically changes the equalizer setting of the reproduced sound in accordance with the information representing the currently traveling road type received from the navigation device 1.

[2. (Specific configuration)
As a specific configuration, first, the navigation device 1 includes a navigation sensor group such as the GPS unit 3 and the gyro sensor 4 in order to acquire the current position information of the own vehicle, and the audio device 2 and the signal transmission path. A connection unit 16 for connection by R, a map data storage unit 50 that stores in advance map data 5 in which at least a road type of a general road or a highway is set for each road section, and an arithmetic control unit such as a CPU of a computer 7.

  Among them, the arithmetic control unit 7 implements the vehicle position acquisition unit 71, the navigation unit 72, and the determination transmission unit 73 while using a storage device such as a memory in accordance with a control program prepared in advance. These are processing means for realizing and executing functional functions as will be described later.

  The audio apparatus 2 includes an acoustic reproduction means 25 such as an amplifier that reproduces sound from a speaker, a radio reception circuit, and a CD player (not shown), and a connection unit for connection to the navigation apparatus 1 through the signal transmission path R. 26 and an equalizer unit 23 that adjusts the level for each frequency range of the sound reproduced by the sound reproducing means 25. Further, in the audio apparatus 2, the control unit (electronic control circuit or arithmetic control unit of a computer such as a CPU) 8 uses a storage device such as a memory in accordance with a control program prepared in advance, The switching means 81 is realized, and these are processing means for realizing and executing a functional action as described later.

[3. Effect)
That is, in the present system configured as described above, first, the vehicle position acquisition means 71 of the navigation device 1 uses the navigation sensor group (particularly, by reading position coordinates from the GPS unit 3) and the current vehicle. The position information including which road section in the map data 5 is currently located is determined by map matching processing with the map data 5 stored in the map data storage unit 50. The vehicle position acquisition process is executed.

  Further, the navigation means 72 calculates the route to the destination and provides guidance based on the position information determined by the vehicle position acquisition means 71 and the map data 5 stored in the map data storage unit 50. Perform the navigation process.

  Further, based on the position information determined by the vehicle position acquisition unit 71 and the map data 5 stored in the map data storage unit 50, the determination transmission unit 73 determines that the currently running road section is at least a general road. A judgment transmission process is executed in which a road type including a highway or a highway is determined and information indicating the road type is transmitted to the audio apparatus 2 via the connection unit 16 and the signal transmission path R.

  On the other hand, the setting storage unit 80 of the audio device 2 has a plurality of types corresponding to at least a general road type or a highway type, here two types for a general road and a highway for the equalizer unit 23. An equalizer setting pattern, that is, a general road pattern P1 and a highway pattern P2 are stored in advance.

  FIG. 2 shows an example of such a plurality of types of setting patterns, and represents each level of the low range of 63 Hz to 500 Hz, the mid range of 500 Hz to 4 kHz, and the high range of 4 kHz to 10 kHz in the frequency band. That is, the solid line is a pattern for general roads (narrow streets), the broken line is a pattern for highways, and for other types of general roads such as national roads, as shown by the alternate long and short dash line, slightly A pattern emphasizing the mid range may be defined.

  Then, in the switching means 81, the road type receiving means (reception unit) includes a road type including at least a general road or a highway through the signal transmission path R and the connection unit 26 from the navigation device 1 and the currently traveling road section. A receiving step for receiving the information indicating is executed. Then, the equalizer search means searches the setting storage unit 80 for the equalizer setting pattern (that is, the general road pattern P1 or the expressway pattern P2) corresponding to the road type represented by the information received by the receiving unit. The equalizer setting means (switching unit) reads the setting pattern and executes a switching step for applying the setting to the equalizer unit 23.

  As described above, by automatically changing the equalizer settings of the audio device according to the type of road such as a general road or a highway, it is possible to effectively ensure the ease of listening to sound while stabilizing the volume and sound quality. Is possible. In addition, since it is not necessary for the user to manually set the equalizer of the car audio according to the location, safety is further improved.

[4. Other embodiments]
In addition, this invention is not limited to the said embodiment, The thing illustrated below and other embodiment other than that are included. For example, in addition to applying different equalizer setting patterns depending on the road type as described above, volume adjustment according to speed and level adjustment for each frequency range may be used in combination.

The functional block diagram which shows the structure of embodiment of this invention. The figure which illustrates the equalizer setting pattern in the embodiment of the present invention. The figure which illustrates the prior art.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Navigation apparatus 2 ... Audio apparatus 3 ... GPS part 4 ... Gyro sensor 5 ... Map data 16, 26 ... Connection part 7 ... Calculation control part 71 ... Own vehicle position acquisition means 72 ... Navigation means 73 ... Judgment transmission means 8 ... Control Unit 80 ... Setting storage unit 81 ... Switching means P1 ... General road pattern P2 ... Highway pattern

Claims (14)

Own vehicle position acquisition means for acquiring own vehicle position information;
A map data storage unit for storing map data including road types;
Navigation means for determining which road the host vehicle is traveling on the basis of host vehicle position information obtained by the host vehicle position acquisition unit and map data stored in the map data storage unit;
Based on the position information obtained by the vehicle position acquisition means and the map data including the road type, a road type corresponding to the vehicle position is determined, and information indicating the determined road type is connected to the navigation device. Road type judgment and transmission means for transmitting to the audio device,
A navigation device comprising: A navigation sensor group for acquiring current vehicle position information;
A connection part for connecting via a signal transmission path with an audio device comprising sound reproduction means for reproducing sound;
A map data storage section that stores in advance map data in which at least a road type of a general road or a highway is set for each road section;
A computer control unit;
In a navigation device comprising
The arithmetic control unit realizes own vehicle position acquisition means, navigation means, and determination transmission means,
The own vehicle position acquisition means acquires the current position coordinates of the own vehicle by the navigation sensor group, and performs map matching processing with the map data stored in the map data storage unit to determine which of the map data It is configured to determine location information including whether the vehicle is currently located on a road section,
The navigation means calculates the route to the destination and provides guidance based on the position information determined by the vehicle position acquisition means and the map data stored in the map data storage unit. Composed of
The determination transmission means is based on the position information determined by the vehicle position acquisition means and the map data stored in the map data storage section, and the currently running road section is at least a general road or a high speed A navigation device configured to determine a road type including a road and transmit information representing the road type to the audio device via the connection unit and the signal transmission path. In an audio device connected to a navigation device,
A setting storage unit that stores equalizer settings according to the type of road;
Road type receiving means for receiving the road type sent from the navigation device;
Equalizer search means for searching the setting storage unit for an equalizer setting corresponding to the road type received by the road type receiving means;
Equalizer setting means for setting the equalizer setting searched by the equalizer search means in an audio device;
An audio device comprising: A connection unit for connecting via a signal transmission path to a navigation device that calculates and guides a route to a destination based on map data stored in advance, position information obtained by a navigation sensor group,
Sound reproduction means for reproducing sound from a speaker;
An equalizer unit for adjusting a level for each frequency range of sound reproduced by the sound reproducing means;
A setting storage unit, a switching unit, and an electronic control circuit that is a control unit of the audio device or an arithmetic control unit of a computer,
In an audio device comprising:
The setting storage unit stores in advance a plurality of types of equalizer setting patterns corresponding to each road type of at least a general road or a highway for the equalizer unit,
The switching means is
A receiving unit that receives information representing a road type including whether the currently running road section is at least a general road or a highway through the signal transmission path and the connection unit from the navigation device;
A switching unit that reads out the equalizer setting pattern corresponding to the road type represented by the information received by the receiving unit from the setting storage unit and applies the setting to the equalizer unit;
An audio device comprising:   A car audio system comprising a combination of the navigation device according to claim 1 or 2 and the audio device according to claim 3 or 4 connected by a signal transmission path. Own vehicle position acquisition means for acquiring own vehicle position information;
A map data storage unit for storing map data including road types;
Navigation means for determining which road the vehicle is traveling on;
Road type determination transmission means for determining the road type corresponding to the vehicle position and transmitting it to the audio device;
In a control method for controlling a navigation device comprising:
A host vehicle position acquisition process in which the host vehicle position acquisition unit acquires host vehicle position information;
Navigation process in which the navigation means determines which road the host vehicle is traveling on the basis of the host vehicle position information obtained by the host vehicle position acquisition process and the map data stored in the map data storage unit. When,
The determination transmission means determines the road type corresponding to the vehicle position based on the position information obtained by the vehicle position acquisition process and the map data including the road type, and represents the determined road type Road type determination transmission processing for transmitting information to an audio device connected to the navigation device;
A method for controlling a navigation device, comprising: A navigation sensor group for acquiring current vehicle position information;
A connection part for connecting via a signal transmission path with an audio device comprising sound reproduction means for reproducing sound;
A map data storage section that stores in advance map data in which at least a road type of a general road or a highway is set for each road section;
A computer control unit;
In a method for controlling a navigation device comprising:
The calculation control unit realizes own vehicle position acquisition means, navigation means, and determination transmission means,
The own vehicle position acquisition means acquires the current position coordinates of the own vehicle by the navigation sensor group, and map matching processing with the map data stored in the map data storage unit to determine which of the map data Execute the vehicle position acquisition process to determine the location information including whether the vehicle is currently located in the road section,
Based on the position information determined in the vehicle position acquisition process and the map data stored in the map data storage unit, the navigation means calculates the route to the destination and provides guidance. Run the navigation process,
Based on the position information determined in the vehicle position acquisition process by the determination transmission means and the map data stored in the map data storage unit, the currently running road section is at least a general road or a high-speed road. A method for controlling a navigation apparatus, comprising: performing a determination transmission process for determining a road type including a road and transmitting information representing the road type to the audio apparatus via the connection unit and the signal transmission path. . Connected to the navigation device,
A setting storage unit that stores equalizer settings according to the type of road;
Road type receiving means for receiving the road type;
Equalizer search means for searching for equalizer settings;
Equalizer setting means for setting the equalizer setting to the audio device;
In a control method for controlling an audio device comprising:
A road type receiving process in which the road type receiving means receives a road type sent from the navigation device;
An equalizer search process in which the equalizer search means searches the setting storage unit for an equalizer setting corresponding to the road type received in the road type reception process;
An equalizer setting process in which the equalizer setting means sets the setting of the equalizer searched by the equalizer search means in an audio device;
A method for controlling an audio device comprising: A connection unit for connecting via a signal transmission path to a navigation device that calculates and guides a route to a destination based on map data stored in advance, position information obtained by a navigation sensor group,
Sound reproduction means for reproducing sound from a speaker;
An equalizer unit for adjusting a level for each frequency range of sound reproduced by the sound reproducing means;
In a method for controlling an audio device comprising:
By means of an electronic control circuit that is a control unit of this audio device or an arithmetic control unit of a computer, a setting storage unit and a switching unit are realized,
In the setting storage unit, for the equalizer unit, at least a plurality of types of equalizer setting patterns corresponding to each road type of a general road or a highway are stored in advance,
In the switching means, a receiving unit and a switching unit are realized,
A receiving step for receiving information representing a road type including whether the currently running road section is at least a general road or a highway through the signal transmission path and the connection unit from the navigation device; ,
The switching unit executes a switching step of reading out the equalizer setting pattern corresponding to the road type represented by the information received in the reception step from the setting storage unit and applying the setting to the equalizer unit. To control the audio device.   A method for controlling a car audio system, comprising: combining the control method for a navigation device according to claim 6 or 7 and the control method for an audio device according to claim 8 or 9 by connecting them through a signal transmission path. By controlling the arithmetic control unit of the navigation device,
Own vehicle position acquisition processing for acquiring own vehicle position information;
A map data storage unit for storing map data including road types;
A navigation process for determining which road the host vehicle is traveling on the basis of the host vehicle position information obtained by the host vehicle position acquisition process and the map data stored in the map data storage unit;
Based on the position information obtained by the vehicle position acquisition process and the map data including the road type, the road type corresponding to the vehicle position is determined, and information indicating the determined road type is connected to the navigation device. Road type judgment transmission processing to be transmitted to the audio device,
A navigation apparatus control program characterized by realizing the above. A navigation sensor group for acquiring current vehicle position information;
A connection part for connecting via a signal transmission path with an audio device comprising sound reproduction means for reproducing sound;
A map data storage section that stores in advance map data in which at least a road type of a general road or a highway is set for each road section;
A computer control unit;
In a control program for a navigation device comprising
The control program controls the arithmetic control unit,
Realizing own vehicle position acquisition means, navigation means, and determination transmission means,
By the vehicle position acquisition means, the current position coordinates of the vehicle are acquired by the navigation sensor group and map matching processing with the map data 5 stored in the map data storage unit is performed. Execute the vehicle position acquisition process to determine the position information including the road section where the vehicle is currently located,
Based on the position information determined in the vehicle position acquisition process and the map data stored in the map data storage unit, the navigation means calculates the route to the destination and provides guidance. Run the navigation process,
Based on the position information determined in the vehicle position acquisition process by the determination transmission means and the map data stored in the map data storage unit, the currently running road section is at least a general road or a high-speed road. A navigation apparatus control program for executing a determination transmission process for determining a road type including a road and transmitting information representing the road type to the audio apparatus via the connection unit and the signal transmission path. . By controlling the arithmetic control unit of the audio device connected to the navigation device,
A setting storage unit that stores equalizer settings according to the type of road;
A road type reception process for receiving a road type sent from the navigation device;
An equalizer search process for searching an equalizer setting corresponding to the road type received in the road type reception process from the setting storage unit;
An equalizer setting process for setting the equalizer setting searched in the equalizer search process in the audio device; and
A control program for an audio device, comprising: A connection unit for connecting via a signal transmission path to a navigation device that calculates and guides a route to a destination based on map data stored in advance, position information obtained by a navigation sensor group,
Sound reproduction means for reproducing sound from a speaker;
An equalizer unit for adjusting a level for each frequency range of sound reproduced by the sound reproducing means;
In an audio device control program comprising
This control program
By controlling the electronic control circuit which is the control unit of this audio device or the arithmetic control unit of the computer, a setting storage unit and a switching unit are realized,
In the setting storage unit, for the equalizer unit, at least a plurality of types of equalizer setting patterns corresponding to each road type of a general road or a highway are stored in advance,
In the switching means, a receiving unit and a switching unit are realized,
A receiving step for receiving, from the navigation device, information representing a road type including at least a general road or an expressway through the signal transmission path and the connection unit from the navigation device; ,
The switching unit executes a switching step of reading out the equalizer setting pattern corresponding to the road type represented by the information received in the receiving step from the setting storage unit and applying the setting to the equalizer unit. A control program for an audio device.

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