KR100529492B1 - Vehicle's Dolby System - Google Patents

Abstract

In the car audio of a vehicle equipped with a Dolby system having a complicated menu tree, the present invention provides a vehicle Dolby system in which a time delay is automatically set according to the position of a selected speaker to overcome the difficulty of initial setting by the driver for optimum sound. The present invention relates to a vehicle AV device employing a Dolby system, and a Dolby setting unit for automatically setting the setting conditions of the Dolby system according to an in-vehicle position where the sound source output of the AV device is concentrated. In addition, the operator's convenience can be improved by reducing the cumbersome manual setting step.

Description

Vehicle Dolby System

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle Dolby system, in particular in car audio of a vehicle equipped with a Dolby system having a complicated menu tree, the time delay according to the position of the speaker selected to overcome the difficulty of initial setting by the driver for optimum sound. Relates to a Dolby system for a vehicle to be automatically set.

A vehicle Dolby system according to the related art will now be described with reference to FIGS. 1 and 2.

First, FIG. 1 illustrates an interior space of a general vehicle, and is a vehicle equipped with a car audio device having a speaker therein.

Car Audio (A) refers to a device designed to listen to powerful sound in a special space of a car by reinforcing performance of a head unit, an amplifier, a speaker, and the like compared to general home audio. The Dolby System is implemented. Dolby systems offer a variety of sound quality depending on the price and type, and advanced car audio systems can further differentiate the functions implemented by Dolby.

Car audio is divided into manufacturers' supply (car stereo) ordered and installed by automakers and upgraded (car audio) products selected by consumers. The car stereo is an integrated unit consisting of a tuner for listening to the radio, a deck for listening to cassette tapes, and an amplifier. However, car audio, like home audio, has separate amplifiers, tuners, and decks for more powerful sound.

The sound source generated from the head unit consisting of a tuner, a cassette deck, and an amplifier is output through a speaker mounted in an interior space of a vehicle, and the speaker is classified into a front speaker, a rear speaker, and a subwoofer according to the mounted position.

The car audio (A) is a situation that has been spread in the majority of vehicles because it can enjoy the vivid original sound comparable to the home audio in the driving car, whereby the driver and passengers can listen to music, radio broadcast, etc. while driving.

Recently, a car TV that receives a TV signal can be connected to the speaker to watch TV in a car, and an option of connecting a car audio CD player and the car TV to watch a movie through DVD playback is added. Increasingly, various media media associated with car audio devices are being installed.

FIG. 2 is a menu tree of a general vehicle Dolby system, and each menu divides basic setting conditions for operating the Dolby system. As shown in FIG. 2, the structure of the menu setting is very complicated, and it can be seen that the multifunction is implemented.

Briefly, first of all, the sound effect menu called LMS is divided into stereo, surround, 3 surround, phantom, and DSP, where the DSP is implemented in a theater, a cathedral, a stadium, a hall, Live can be set.

The second is a speaker selection menu. The front, center and rear speakers provided in the vehicle can be selected by the menu operation, and the rear speakers are divided into large and small.

Trim is a menu for finely adjusting the sound quality of each speaker. The trim is divided into front, center, left rear, right rear, and switch to up / down trim the sound quality of each speaker.

DRC (Dynamic Range Control) is a menu for controlling sound quality displacement, which can be divided into standard and max.

The time menu adjusts the delay of the time when the sound source is delivered to each speaker position so that the sound source of each speaker is concentrated. The consumer adjusts the time delay of the rear and center sides, but this operation is quite complicated. Cumbersome.

POS menu is a menu that selects the position where a person is located so that the sound source is concentrated and is divided into driver, assist, front, rear, all, and off.

The tone menu is a menu for adjusting the tone of the sound output from the speaker. The tone menu is divided into a treble, a bass, and an equalizer. The equalizer is divided into DEFEAT, pop, jazz, rock, and classic to be adjusted. Can be.

The operation of such complex and diverse menus requires considerable knowledge of the driver, which is very difficult for the novice installer to operate the menu, and it is implemented in high-end audio devices by using the default menu released by the producer. There is a drawback that you cannot use the various functions of Dolby.

In addition, due to the small space inside the car, it is inconvenient for the driver to set up the car audio Dolby system.

The present invention has been made to solve the above-mentioned problems of the prior art, the object of which is to overcome the difficulty of the driver initially setting for the optimum sound effect in the car audio of the vehicle equipped with a Dolby system having a complex menu tree In order to provide a vehicle Dolby system so that the time delay is automatically set according to the position of the selected speaker to enable easy operation.

According to a feature of a vehicle Dolby system according to the present invention for solving the above problems, in the vehicle Dolby system having a Dolby setting section is set according to the position in the vehicle, the Dolby setting unit is a sound effect Selectable sound effect selection unit, position selection unit for selecting the position to concentrate the sound source output to any one of the driver / assist / front / rear / total position, and the time delay set according to the position selected in the position selection unit It characterized in that it comprises a time selector for automatically applying to the sound source output signal.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. 3 is a configuration diagram of a vehicle Dolby system according to the present invention, Figure 4 is a flow chart illustrating an operation method of a vehicle Dolby system according to the present invention.

First of all, Dolby is Dolby, a sound encoding / decoding standard proposed by Dolby, based in London, UK as a theater and home sound standard.

The basic Dolby circuit is a noise reduction system that eliminates inevitable sound degradation during tape recording / playback by eliminating the noise (tape friction) caused by the friction between the tape and the head when the tape is running. There are B type and C type in Dolby circuit, but B type is generally adopted, and B and C type are used in high-end equipment.

Dolby Pro Logic (Dolby Pro Logic) is a sound system composed of 4.1 channels (left, right, rear surround, subwoofer). It is one of the representative sound systems such as Dolby Digital and is widely used in home theaters. It consists of 2 front channels, 1 center channel, and 1 rear channel (two speakers and mono), all four channels.

The Dolby AC-3 is a 5.1-channel digital surround sound system known as Dolby Digital. The Dolby AC-3 adopts a digital surround method that completely separates 5.1 channels (left, center, right, rear left surround, rear right surround (5 channels) and bass subwoofer (0.1 channel). Unlike the 4 channel audio signal, which is mixed into the 2 channel signal and separated during playback, the 5.1 channel state is maintained during recording and playback, so that no disturbances such as crosstalk and phase characteristics can occur. The great feature is that it can increase the realism.

Such Dolby AC-3 has not been applied to car audio until now, and will be carried out in the future, and the basic Dolby circuit or the Dolby Pro Logic is currently applied to the car audio device. In particular, the Dolby system is difficult to set the listening effect by setting the time delay of the sound source output depending on the position of the speaker or the position of the listener.

The Dolby setting unit 200 of the present invention for setting the Dolby menu includes a sound effect selection unit 210 for selecting a sound effect, a position selection unit 220 for selecting a position where the sound source output is concentrated, and And a time selector 230 for automatically applying a time delay set according to the position selected by the position selector 220 to the sound source output signal.

That is, the Dolby setting unit 200 is a sound effect menu called LMS in the menu tree shown in Figure 2 is matched with the sound effect selector 210, POS menu is matched with the position selector 220, time When a menu is matched with the time selector 230 and surround, which is a submenu of the sound effect menu, is selected, a preset delay time is automatically applied to concentrate the output of the sound source at the position selected by the position selector 220. do. This eliminates the need for the driver to manually set complicated time delays.

The position selector 220 is divided into a driver / assist / front / rear / total position, and functions differently when the OFF of the conventional menu tree is selected, so that the position selector 220 is turned off by the position selector 220. When is selected, it is possible to enter the manual setting mode to manually set the time delay of the sound source output signal.

Looking at the operation of the vehicle Dolby system of the present invention configured as described above with reference to FIG.

In the first step, the surround effect is selected through the L.M.S (sound effect selection unit) menu.

In the second step, the position where the sound source output is concentrated is selected through the POS (Position Selector) menu (S2).

If the position menu selected in the second step is selected as OFF (S3), the user enters a manual setting mode in which the user can manually set a time delay (S5), and when a specific position is designated in the position menu, the POS menu. A time delay corresponding to the position selected by the time selector associated with is automatically applied (S4).

As described above, the vehicle Dolby system according to the present invention has been described with reference to the illustrated drawings, but the present invention is not limited by the embodiments and drawings disclosed herein, and may be applied within the scope of the technical idea.

In order to more easily set the menu tree of the Dolby system implemented in the car audio within the special environment of the vehicle of the present invention configured as described above, the time delay is automatically selected according to the position where the sound source is concentrated when the surround effect is selected. By setting the connection can simplify the complicated setting step of the driver has an effect that can improve the user convenience.

1 is a view showing the interior space of a typical vehicle;

2 is a menu tree of a typical vehicle Dolby system,

3 is a configuration diagram of a vehicle Dolby system according to the present invention;

4 is a flowchart illustrating a method of operating a vehicle Dolby system according to the present invention.

<Explanation of symbols on main parts of the drawings>

100: vehicle AV device 200: Dolby setting

210: sound effect selection unit 220: position selection unit

230: time selection unit

Claims (4)

In a Dolby system for a vehicle having a Dolby setting unit in which the setting conditions of the Dolby system are set according to the position in the vehicle, The Dolby setting unit may include a sound effect selector for selecting a sound effect, a position selector for selecting a position such that a sound source output is focused on any one of a driver / assist / front / rear / whole position, and the position selector And a time selector for automatically applying a time delay set according to a selected position to a sound source output signal. delete delete The method of claim 1, And the position selection unit comprises a manual setting mode for manually setting a time delay of the sound source output signal.