KR101161294B1 - Audio visual system - Google Patents

Abstract

The audio visual system includes a sound penetration image output unit for displaying an image, and a plurality of speakers disposed on a rear surface of the acoustic image output unit and having a two-dimensional array structure. The minimum horizontal angle between the first two speakers horizontally adjacent to the designed virtual listener position is equal to or greater than the first angle that is the minimum angle that can distinguish the direction of the sound, and the maximum horizontal angle between the second two speakers indicates the movement of the sound. It is below the 2nd angle which can feel continuously.

Description

Audio visual system {AUDIO VISUAL SYSTEM}

Audio visual system {AUDIO VISUAL SYSTEM}

The audio visual system outputs video and sound. The audio visual system may output an image through a panel of the display device or display an image projected from a projector (or projector) through a screen. In addition, the audio visual system may output sound through a display system or a speaker system disposed behind the screen.

Among the embodiments, the audio visual system includes a sound penetration image output unit for displaying an image, and a plurality of speakers disposed on a rear surface of the acoustic image output unit and having a two-dimensional array structure. The minimum horizontal angle between the first two speakers horizontally adjacent to the designed virtual listener position is equal to or greater than the first angle that is the minimum angle that can distinguish the direction of the sound, and the maximum horizontal angle between the second two speakers indicates the movement of the sound. It is below the 2nd angle which can feel continuously.

The description of the disclosed technique is merely an example for structural or functional explanation and the scope of the disclosed technology should not be construed as being limited by the embodiments described in the text. That is, the embodiments may be variously modified and may have various forms, and thus the scope of the disclosed technology should be understood to include equivalents capable of realizing the technical idea.

Meanwhile, the meaning of the terms described in the present application should be understood as follows.

The terms " first ", " second ", and the like are used to distinguish one element from another and should not be limited by these terms. For example, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component.

The term “and / or” should be understood to include all combinations that can be presented from one or more related items. For example, the meaning of “first item, second item and / or third item” may be given from two or more of the first, second or third items as well as the first, second or third items. Any combination of the possible items.

When a component is referred to as being "connected" to another component, it should be understood that there may be other components in between, although it may be directly connected to the other component. On the other hand, when an element is referred to as being "directly connected" to another element, it should be understood that there are no other elements in between. On the other hand, other expressions describing the relationship between the components, such as "between" and "immediately between" or "neighboring to" and "directly neighboring to", should be interpreted as well.

Singular expressions should be understood to include plural expressions unless the context clearly indicates otherwise, and terms such as "include" or "have" refer to features, numbers, steps, operations, components, parts, or parts thereof described. It is to be understood that the combination is intended to be present, but not to exclude in advance the possibility of the presence or addition of one or more other features or numbers, steps, operations, components, parts or combinations thereof.

For each step, the identifiers (e.g., a, b, c, ...) are used for convenience of description, and the identifiers do not describe the order of the steps, and each step is clearly contextual. Unless stated in a specific order, it may occur differently from the stated order. That is, each step may occur in the same order as specified, may be performed substantially simultaneously, or may be performed in the reverse order.

All terms used herein have the same meaning as commonly understood by one of ordinary skill in the art unless otherwise defined. Terms defined in commonly used dictionaries should be interpreted to be consistent with meaning in the context of the relevant art and can not be construed as having ideal or overly formal meaning unless expressly defined in the present application.

1 is a diagram illustrating an audio visual system according to an embodiment of the disclosed technology.

Referring to FIG. 1, an audio visual system 100 includes a sound penetration image output unit 110 and a plurality of speakers 120, and the plurality of speakers 120 may include a transmissive image output unit. It is disposed at the rear of the 110.

The transmissive image output unit 110 displays an image and passes the sound output from the speakers 120 disposed at the rear side. The sound absorbing image output unit 110 includes a plurality of holes for sound absorption. The sound output from the plurality of speakers 120 may be better transmitted to the front direction of the transmissive image output unit 110 through the plurality of holes.

The plurality of speakers 120 are arranged in a two-dimensional array structure in which the virtual listener can distinguish the direction of the sound and feel the movement of the sound continuously based on the designed virtual listener position.

FIG. 2 is a diagram for describing an exemplary embodiment of the transmissive image output unit of FIG. 1.

Referring to FIG. 2, the transmissive image output unit 110 includes a scan driving circuit 210, a data driving circuit 220, and a panel 230.

In one embodiment, the transmissive image output unit 110 includes a plurality of cells 232 composed of at least one pixel 234 and a hole 236 for sound transmission. May correspond. For example, the transmissive image output unit 110 may correspond to an AMOLED (Active Matrix OLED) display panel. This is because the AMOLED display panel may display an image unlike the liquid crystal display (LCD) even though the AMOLED display panel includes the hole 236.

The scan driving circuit 210 applies a scan signal to the cells 232 through the scan line 212, and the data driving circuit 220 applies a data signal to the cells 232 through the data line 222. The panel 230 includes a plurality of cells 232 composed of at least one pixel 234 and a hole 236 for sound transmission, and displays an image through the cells 232.

The cells 232 include pixels 234 and holes 236 of three colors (R, G, B), respectively, and the scan driving circuit 210 and the scan line 212 and the data line 222. It is connected to the data driving circuit 220, respectively. The hole 236 transmits the sound output from the speakers 120. In one embodiment, the size of the hole 236 may be smaller than the cell. For example, the size of the hole 236 may be equal to the size of one pixel 234 or smaller than the size of one pixel 234.

3 to 5 are diagrams for describing the cells described with reference to FIG. 2.

As shown in each of FIGS. 3 to 5, the cell may be implemented in various forms.

Referring to FIG. 3, one cell 310 includes two red (R) pixels, one green (G) pixel, two blue (B) pixels, and one hole (H). In one embodiment, each pixel is square and the size of each pixel may be the same. In one embodiment, the size of the hole may be the same as the size of each pixel.

Referring to FIG. 4, one cell 410 includes one red (R) pixel, one green (G) pixel, one blue (B) pixel, and one hole (H). In one embodiment, each pixel is rectangular and the size of each pixel may be the same. In one embodiment, the size of the hole may be the same as the size of each pixel or may be different from the size of each pixel.

Referring to FIG. 5, one cell 510 may include a first subcell 510a including a hole and a second subcell 510b not including a hole. The first subcell 510a includes two red (R) pixels, one green (G) pixel, two blue (B) pixels, and one hole (H), and the second subcell 510b. ) Includes two red (R) pixels, two green (G) pixels, and two blue (B) pixels. In one embodiment, each pixel is square and the size of each pixel may be the same. In one embodiment, the size of the hole may be the same as the size of each pixel.

6 is a view for explaining another embodiment of the transmissive image output unit of FIG. 1.

FIG. 6 assumes that the virtual listener 630 is watching an image through the audio visual system 100 in a room 610.

Referring to FIG. 6, the audio visual system 100 includes a transmissive image output unit 110 and speakers 120, and the transmissive image output unit 110 displays an image projected from the projector 620. do.

FIG. 7 is a diagram for describing the transmissive image output unit of FIG. 6.

Referring to FIG. 7, the transmissive image output unit 110 includes a screen 710 for displaying an image projected from the outside, and the screen 710 has holes 720 of uniform density for sound absorption. ). In one embodiment, the holes 720 may be arranged in a two dimensional array. Sound output from the plurality of speakers 120 may be better transmitted to the front direction of the screen 710 through the holes 720.

8 is a diagram illustrating speakers of an audio visual system according to an embodiment of the disclosed technology.

It is assumed that the plurality of speakers 120 are disposed in regions where the lengths of the horizontal and the vertical are X and Y, respectively, and the virtual listener 810 is located at a distance D from the plurality of speakers 120.

Referring to FIG. 8, the plurality of speakers 120 are arranged in a two-dimensional array structure. The plurality of speakers 120 may have two directions in which the virtual listener 130 may distinguish the direction of the sound based on the designed position of the virtual listener 130, and the virtual listener 130 may continuously sense the movement of the sound. Arranged in a dimensional array structure. For example, the virtual listener 130 may distinguish the direction in which the corresponding sound is output based on the sound output from the speaker. In addition, when the sound is output at a predetermined time difference between the two speakers, the virtual listener 130 may feel that the direction of the sound has moved.

According to an exemplary embodiment, the plurality of speakers 120 may include a first angle at which a minimum horizontal angle between two horizontally adjacent first speakers based on the position of the virtual listener 130 is a minimum angle capable of distinguishing a direction of sound. It is arranged in the speaker system 110 to be above. Since the horizontal angle between the two speakers based on the position of the virtual listener 130 decreases as the distance from the center of the speaker system 110 decreases, the speaker 120a disposed at the position farthest from the center of the speaker system 110. Next, the horizontal angle a between the speakers 120b disposed at the far position becomes the minimum horizontal angle.

Therefore, the speaker is disposed such that the horizontal angle a between the speakers 120a and 120b is equal to or greater than a first angle that is a minimum angle that can distinguish the direction of sound. When the horizontal angle between the speakers 120a and 120b is the first angle, the horizontal distance between the speakers 120a and 120b may correspond to L1. In one embodiment, the first angle, which is the minimum angle that can distinguish the direction of sound, may correspond to 3 °. The human auditory system can distinguish between sources of sound when the angle between the sources of sound is greater than 3 °.

In an exemplary embodiment, the plurality of speakers 120 may include a second angle at which a maximum horizontal angle between two horizontally adjacent speakers based on the position of the virtual listener 130 is a maximum angle at which sound movement may be continuously felt. The speaker system 110 is disposed below. Since the horizontal angle between the two speakers based on the position of the virtual listener 130 increases as the speaker gets closer to the center of the speaker system 110, the speaker 120c disposed at the position closest to the center of the speaker system 110. ) And the next horizontal angle (b) between speakers 120d disposed at the closest position is the maximum horizontal angle.

Therefore, the speakers are arranged such that the horizontal angle b between the corresponding speakers 120c and 120d becomes less than or equal to the second angle, which is the maximum angle at which the movement of the sound can be continuously felt. When the horizontal angle between the speakers 120c and 120d is the second angle, the horizontal distance between the speakers 120c and 120d may correspond to L2. In one embodiment, the second angle, which is the maximum angle at which movement of the sound can be felt, may correspond to 10 °. This is because the human auditory system is less likely to feel the movement of the sound if it occurs with a time difference between sources of sound with an angle of more than 10 °.

In one embodiment, the horizontal distance between two adjacent speakers may be equal to each other. That is, the horizontal distances of the speakers arranged in the speaker system 110 may be the same. For example, the horizontal distance L1 between the first two speakers and the horizontal distance L2 between the second two speakers may be the same value, and the horizontal distance of the remaining speakers is also the same value L1 (= L2). May be)). Thus, the virtual listener 130 can distinguish the direction of the sound and at the same time can feel the movement of the sound continuously.

The disclosed technique may have the following effects. It is to be understood, however, that the scope of the disclosed technology is not to be construed as limited thereby, as it is not meant to imply that a particular embodiment should include all of the following effects or only the following effects.

The audio visual system according to an exemplary embodiment may allow a listener to accurately distinguish the direction of sound while viewing an image through the transmissive image output unit. Therefore, the position of the object of the image displayed on the transparent image output unit and the direction of the sound output from the speaker can be precisely matched, and the listener can provide a realistic image and sound.

The audio visual system according to an exemplary embodiment may allow a listener to continuously feel the movement of sound while watching an image through the transmissive image output unit. Therefore, it is possible to accurately match the movement of the object of the image displayed on the transparent image output unit with the movement of the sound output from the speaker, and provide a realistic image and sound to the listener.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the present invention as defined by the following claims It can be understood that

1 is a diagram illustrating a speaker system of an audio visual system according to an exemplary embodiment of the disclosed technology.

FIG. 2 is a diagram illustrating an embodiment of an audio visual system including the speaker system of FIG. 1.

3 to 5 are diagrams for describing the cell of FIG. 2.

FIG. 6 is a diagram for explaining another embodiment of an audio visual system including the speaker system of FIG. 1.

FIG. 7 is a diagram for describing an audio visual system of FIG. 6.

8 is a diagram illustrating speakers of an audio visual system according to an embodiment of the disclosed technology.

Claims (6)

A sound penetration image output unit including a plurality of cells including at least one pixel for displaying an image and holes for sound transmission; And Arranged on the back of the sound-absorbing image output unit, and comprises a plurality of speakers having a two-dimensional array structure, The minimum horizontal angle between the first two horizontally adjacent speakers based on the designed virtual listener position is at least 3 degrees, the minimum angle that can distinguish the direction of the sound, and the maximum horizontal angle between the second two speakers continues the movement of the sound. 10 degrees or less, And a horizontal distance between two neighboring speakers among the plurality of speakers is equal to each other. delete The method of claim 1, wherein the sound-absorbing video output unit And a screen for displaying an image projected from the outside, wherein the screen includes holes of uniform density for permeation. delete delete delete

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