WO2025146853A1 - Tv sound stereophonic sound system using sound bar - Google Patents

Abstract

The present invention relates to a system for realizing stereophonic sound of a TV receiver by utilizing a sound bar unit disposed below the TV receiver. The system comprises: a sound source extraction unit that separately extracts a sound source from an input source applied to the TV receiver; a sound source processing unit that separates the sound source for each frequency and allocates channels, and then distributes individual signals to speakers of the TV receiver and the sound bar unit; a sound source transmission unit that individually transmits signals distributed by the sound source processing unit to the speakers of the TV receiver and the sound bar unit; and a video extraction unit that separately extracts a video source from the input source applied to the TV receiver.

Description

TV sound surround sound system through the use of a sound bar

The present invention relates to a TV sound surround sound system, and more specifically, to a TV sound surround sound system technology related to a surround sound algorithm that applies a sound bar to a TV and applies a sound signal applied to the TV in a three-dimensional manner to the TV and the sound bar to produce a three-dimensional sound.

The 3D Audio market was valued at USD 6.28 billion in 2022 and is expected to reach USD 19.07 billion by 2030, representing a CAGR of 14.9%, driven by advancements in the media and entertainment sector, latest AV technologies, proliferation of the gaming industry, and increasing trend toward online 3D music streaming. The market is segmented into hardware, software, and services, and regionally, Asia Pacific holds the largest share and is expected to register the highest growth rate during the forecast period.

A related prior art patent document exists, “A device for reproducing 3D sound using virtual speaker technology in a multi-channel speaker environment (Registration No. 10-0849030, Patent Document 1).”

The invention according to Patent Document 1 relates to a stereophonic sound reproduction device that uses virtual speaker technology to enable a listener to experience a stereophonic sound effect when a signal input as a stereo input or multi-channel is reproduced by a multi-channel output device.

Patent Document 1: The invention provides a three-dimensional effect by using a virtual speaker technology that determines an input sound source signal and determines a signal as a stereo signal, thereby making it feel as if the sound location is not located between two speakers but in an outer area by using sound area expansion, and when a signal determined as a multi-channel signal is played back on a two-channel speaker through down-mixing, a three-dimensional sound reproduction system is provided that allows the user to feel the same effect as if 5.1-channel speakers were used by using stereo speakers and virtual speakers.

There exists a "device and method for generating three-dimensional sound with sound localization function (Registration No. 10-0566131, Patent Document 2)".

Patent Document 2 The invention relates to a method and device for extracting location information of a sound object from user or graphic information to position a played sound in three-dimensional space.

Patent Document 2 The invention includes: a position information receiving device into which position information for positioning an original sound at a desired position is input; a three-dimensional sound synthesizer which converts the original sound, the position information input from the position information receiving device, and an HRTF DB so that a sound image is formed at the desired position; a selection device which receives an output of the three-dimensional sound synthesizer and, depending on the result of selection of whether it is speaker playback or headphone playback, transmits the output to headphones if it is headphone playback; and a stereoscopic sound accelerator which removes crosstalk occurring when playing back the output through a speaker and outputs it to the speaker if the result of selection in the selection device is speaker playback.

There exists a “Method and device for reproducing three-dimensional sound (Registration No. 10-2608824, Patent Document 3).”

Patent Document 3 The invention comprises a step of receiving a multi-channel signal including a height input channel signal, a horizontal input channel signal, and flag information, a step of obtaining a first downmix matrix for three-dimensional rendering with an output layout, a step of obtaining a second downmix matrix for two-dimensional rendering with the output layout, and a step of rendering a multi-channel signal including a height input channel signal and a horizontal input channel signal using at least one of the first downmix matrix and the second downmix matrix to provide a sound image having a sense of height through a plurality of output channel signals according to the output layout, wherein the output layout is a 5.1 channel format, the power of the rendered multi-channel signal is preserved, the first downmix matrix and the second downmix matrix are for different height renderings for the height input channel signal, and the multi-channel signal includes a first frame having an applause sound characteristic or a second frame having a general sound characteristic, and the first frame is rendered using the second downmix matrix in correspondence with the flag information of the first frame indicating the applause sound characteristic, and the second frame is rendered in correspondence with the flag information of the second frame indicating the general sound characteristic. A method for rendering an audio signal is disclosed, which is rendered using a first downmix matrix.

There exists a "sound control system that implements three-dimensional sound effects in augmented reality and virtual reality (registration number 10-2398850, patent document 4)".

Patent Document 4 The invention relates to a sound control system that outputs sound optimized for an actual space in augmented reality or virtual reality, and is characterized by comprising: a recognition unit that tracks in real time information on a space where a user is actually located and information on the user's location in the space; a calculation unit that receives actual space information and location information detected by the recognition unit and source information transmitted from content and converts them into coordinates; an analysis unit that synthesizes the transmitted actual and virtual space information and object information to generate absolute position coordinates of an optimized object in the actual space; a control unit that generates optimized sound control information at the location of a tracked object based on the absolute position coordinates of the object generated by the analysis unit; and a driving unit that adjusts the volume of a sound source signal output from the content based on the control information for each channel of a speaker.

There exists a "Method and device for providing multi-viewer video and 3D stereoscopic sound (Registration No. 10-1534295, Patent Document 5)".

Embodiment of Patent Document 5 displays a stereoscopic image and a multi-channel image in which one or more corresponding objects are arranged in a virtual space, in a preset channel display area, and outputs a multi-channel audio signal corresponding to the multi-channel image, and if variation information about the corresponding object is recognized, generates a reconstructed stereoscopic image by reconstructing the stereoscopic image based on the variation information, and adjusts and outputs the output of each audio signal included in the multi-channel audio signal, thereby displaying a 3D spatial sense, and provides a method and device for providing a multi-viewer image and 3D stereoscopic sound that can provide a stereoscopic and realistic surround effect without having a separate additional speaker for implementing 3D sound.

The TV sound surround sound system utilizing a sound bar according to the present invention has been devised to solve the above-mentioned conventional problems, and presents the following tasks to be solved.

First, it enables the production of 3D sound through an algorithm without the introduction of physical hardware such as chips that must be installed inside the TV.

Second, the introduction of a physical device external to the TV and the use of an algorithm to produce 3D surround sound are possible.

Third, it prevents signal interference between the left and right speakers, allowing for a clean, three-dimensional sound through the left and right speakers.

The problems to be solved by the present invention are not limited to those mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the description below.

The TV sound surround sound system utilizing a sound bar according to the present invention has the following problem-solving means to solve the above-mentioned problem.

In the case of a TV sound surround sound system utilizing a sound bar according to the present invention, a system for expressing surround sound of the sound of a TV receiver through utilizing a sound bar unit disposed at the bottom of a TV receiver may be characterized by including: a sound source extraction unit for separately extracting a sound source from an input source applied to the TV receiver; a sound source processing unit for separating the sound source by frequency and allocating channels, and then distributing individual signals to the speakers of the TV receiver and the sound bar unit; a sound source transmission unit for individually transmitting the signals distributed by the sound source processing unit to the speakers of the TV receiver and the sound bar unit, respectively; and a video extraction unit for separately extracting a video source from an input source applied to the TV receiver.

In the case of a TV sound surround sound system utilizing a sound bar according to the present invention, the TV receiver may include an upper speaker unit disposed at an upper portion of the main body of the TV receiver to generate sound; and a down speaker unit disposed at a lower portion of the main body of the TV receiver to generate sound, wherein the upper speaker unit includes an upper left speaker unit disposed at an upper right portion of the main body of the TV receiver to transmit a left sound signal to a left ear of a user facing the TV receiver; and an upper right speaker unit disposed at an upper left portion of the main body of the TV receiver to transmit a right sound signal to a right ear of a user facing the TV receiver; and the down speaker unit may include a down left speaker unit disposed at a lower right portion of the main body of the TV receiver to transmit a left sound signal to a left ear of a user facing the TV receiver; and a down right speaker unit disposed at an lower left portion of the main body of the TV receiver to transmit a right sound signal to a right ear of a user facing the TV receiver.

In the case of a TV sound surround sound system utilizing a sound bar according to the present invention, the sound source processing unit may be characterized by including a channel allocation unit that assigns physical addresses to each of the upper speaker unit, the down speaker unit, and the sound bar unit, and sets a crossover point of the sound source; and an upmix unit that divides the sound source into channels using information of the crossover point.

In the case of a TV sound surround sound system utilizing a sound bar according to the present invention, the channel allocation unit may include a speaker address designation unit that assigns a physical address to each of the upper left speaker unit, the upper right speaker unit, the down left speaker unit, the down right speaker unit, and the sound bar unit; and a point setting unit that sets a preset first point range and a preset second point range as the crossover point based on the frequency of the sound source.

In the case of a TV sound surround sound system utilizing a sound bar according to the present invention, the point setting unit may be characterized by designating a first point set in advance within the first point range set in advance, and designating a second point set in advance within the second point range set in advance, so that the sound source is conceptually divided into three bands based on frequency.

In the case of a TV sound surround sound system utilizing a sound bar according to the present invention, the upmix unit may be characterized by including a band separation unit that sets a range below a first preset point as a low-band range, a range above the first preset point and below the second preset point as a mid-band range, and a range above the second preset point as a high-band range based on the frequency of the sound source, thereby separating the band into the low-band range, the mid-band range, and the high-band range based on the frequency of the sound source; and a left and right separation unit that separates and extracts the low-band range, the mid-band range, and the high-band range separated by the band separation unit as a left signal and a right signal, respectively.

In the case of a TV sound surround sound system utilizing a sound bar according to the present invention, the sound source processing unit may further include: i) a signal compensation unit that filters out and removes right signal noise from the left signal of the low-band section, the mid-band section, and the high-band section separated based on frequency by the band separation unit; and ii) a signal compensation unit that filters out and removes right signal noise from the right signal of the low-band section, the mid-band section, and the high-band section separated based on frequency by the band separation unit.

In the case of a TV sound surround sound system utilizing a sound bar according to the present invention, the sound source processing unit may further include a signal distribution unit that distributes the right signal of the high-band section, the left signal of the high-band section, the right signal of the mid-band section, the left signal of the mid-band section, and the right signal and the left signal of the low-band section, which are separated based on frequency by the band separation unit, to the physical addresses of each of the upper left speaker unit, the upper right speaker unit, the down left speaker unit, the down right speaker unit, and the sound bar unit physically assigned by the speaker address designation unit.

In the case of a TV sound surround sound system utilizing a sound bar according to the present invention, the sound source processing unit may further include a phantom image generating unit that tracks an object of the video source extracted separately by the video extraction unit, and selectively applies a differential transmission timing of a sound signal between a left signal and a right signal of the low-band section, the mid-band section, and the high-band section separated by frequency by the band separation unit based on the tracked object.

In the case of a TV sound surround sound system utilizing a sound bar according to the present invention, the sound source processing unit may further include a phantom image generating unit that tracks an object of the video source extracted separately by the video extraction unit, and selectively applies a differential transmission timing of a sound signal between the low-band section, the mid-band section, and the high-band section separated by frequency by the band separation unit based on the tracked object.

A TV sound surround sound system utilizing a sound bar according to the present invention having the above configuration provides the following effects.

First, by applying only a software algorithm, the 2D sound information input to the TV is processed only through software, and a three-dimensional sound is produced through the algorithm without the introduction of physical hardware such as chips.

Second, by introducing a sound bar, or a straight-line speaker, placed at the bottom of the TV, it uses an algorithm to produce 3D surround sound.

Third, it produces three-dimensional sound by preventing signal interference between the left and right speakers, and generates upper and lower three-dimensional sound through the downward sound bar.

The effects of the present invention are not limited to those mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the description below.

FIG. 1 is a diagram illustrating the overall concept of a TV sound surround sound system utilizing a sound bar according to one embodiment of the present invention.

FIG. 2 is a block diagram showing the main configuration of a TV sound surround sound system utilizing a sound bar according to one embodiment of the present invention.

FIG. 3 is a block diagram illustrating a sound source processing unit and its sub-components of a TV sound surround sound system utilizing a sound bar according to one embodiment of the present invention.

FIG. 4 is a block diagram illustrating a channel allocation unit and its sub-components of a TV sound surround sound system utilizing a sound bar according to one embodiment of the present invention.

FIG. 5 is a block diagram illustrating an upmix section and its sub-components of a TV sound surround sound system utilizing a sound bar according to one embodiment of the present invention.

FIG. 6 is a block diagram illustrating a signal distribution unit and its sub-components of a TV sound surround sound system utilizing a sound bar according to one embodiment of the present invention.

FIG. 7 is a conceptual diagram explaining the function of a speaker addressing unit of a TV sound surround sound system utilizing a sound bar according to one embodiment of the present invention.

FIG. 8 is a conceptual diagram explaining the function of a point setting unit of a TV sound surround sound system using a sound bar according to one embodiment of the present invention.

FIG. 9 is a conceptual diagram for explaining the function of a band separation unit of a TV sound surround sound system through the use of a sound bar according to one embodiment of the present invention.

FIG. 10 is a conceptual diagram for explaining the function of the left and right separation parts of a TV sound surround sound system through the use of a sound bar according to one embodiment of the present invention.

FIG. 11 is a conceptual diagram for explaining the function of a signal compensation unit of a TV sound surround sound system through the use of a sound bar according to one embodiment of the present invention.

FIG. 12 is a conceptual diagram for explaining the function of a phantom image generating unit of a TV sound surround sound system through the use of a sound bar according to one embodiment of the present invention.

FIG. 13 is a conceptual diagram for explaining the function of a point processing unit of a TV sound surround sound system through the use of a sound bar according to one embodiment of the present invention.

The TV sound surround sound system utilizing the sound bar according to the present invention can have various modifications and various embodiments, and specific embodiments are illustrated in the drawings and described in detail in the detailed description. However, this is not intended to limit the present invention to specific embodiments, and it should be understood that it includes all modifications, equivalents, or substitutes included in the technical idea and technical scope of the present invention.

FIG. 1 is a conceptual diagram of a TV sound surround sound system utilizing a sound bar according to an embodiment of the present invention. FIG. 2 is a block diagram showing the main configuration of a TV sound surround sound system utilizing a sound bar according to an embodiment of the present invention. FIG. 3 is a block diagram showing a sound source processing unit and its sub-configurations of a TV sound surround sound system utilizing a sound bar according to an embodiment of the present invention. FIG. 4 is a block diagram showing a channel allocation unit and its sub-configurations of a TV sound surround sound system utilizing a sound bar according to an embodiment of the present invention. FIG. 5 is a block diagram showing an upmix unit and its sub-configurations of a TV sound surround sound system utilizing a sound bar according to an embodiment of the present invention. FIG. 6 is a block diagram showing a signal distribution unit and its sub-configurations of a TV sound surround sound system utilizing a sound bar according to an embodiment of the present invention. FIG. 7 is a conceptual diagram explaining the function of a speaker address designation unit of a TV sound surround sound system utilizing a sound bar according to an embodiment of the present invention. FIG. 8 is a conceptual diagram explaining the function of a point setting unit of a TV sound surround sound system utilizing a sound bar according to an embodiment of the present invention. FIG. 9 is a conceptual diagram for explaining the function of a band separation unit of a TV sound surround sound system through the use of a sound bar according to an embodiment of the present invention. FIG. 10 is a conceptual diagram for explaining the function of a left and right separation unit of a TV sound surround sound system through the use of a sound bar according to an embodiment of the present invention. FIG. 11 is a conceptual diagram for explaining the function of a signal compensation unit of a TV sound surround sound system through the use of a sound bar according to an embodiment of the present invention. FIG. 12 is a conceptual diagram for explaining the function of a phantom image generation unit of a TV sound surround sound system through the use of a sound bar according to an embodiment of the present invention. FIG. 13 is a conceptual diagram for explaining the function of a point processing unit of a TV sound surround sound system through the use of a sound bar according to an embodiment of the present invention.

In the case of a TV sound surround sound system utilizing a sound bar according to the present invention, as illustrated in FIG. 1, it corresponds to a system for generating surround sound by converting an input source applied to a TV receiver (see TV unit of FIG. 1) into a 2D sound source through a sound bar unit (30) and an algorithm into a 3D sound source.

First, as shown in Fig. 1, the input source is input as a video source and a sound source, and a typical TV receiver is designed to only output sound effects in 2D through the left and right speakers within the TV receiver.

The present invention is to generate 3D surround sound by processing a 2D sound source applied to a TV receiver having two stereo type speakers built in together with an algorithm using a sound bar unit.

For this purpose, in the case of a TV sound surround sound system utilizing a sound bar according to the present invention, as illustrated in FIG. 2, a sound source extraction unit (100), a sound source processing unit (200), a sound source transmission unit (300), and a video extraction unit (400) may be included.

The term “unit” here will not be defined as a functional or conceptual unit of a physical chip or mechanical device, but rather as a conceptual definition centered on a unit of software function expressed through an algorithm.

That is, the unit in the present invention corresponds to a conceptual unit divided into functional units of an algorithm, and its lower-level components are given the suffix “part”, which also corresponds to a functional conceptual unit of a lower-level concept of the unit, which is a functional conceptual unit.

First, in the case of the sound source extraction unit (100), it is a configuration that separately extracts a sound source from an input source applied to a TV receiver.

In the case of a TV receiver, as shown in Fig. 1, it may include an upper speaker unit (10) and a down speaker unit (20).

In the case of the upper speaker unit (10), as shown in Fig. 1, it is configured to be placed in the upper part of the main body of the TV receiver and generate sound.

In the case of the down speaker unit (20), as shown in Fig. 1, it is configured to be placed at the lower part of the main body of the TV receiver and generate sound.

The upper speaker unit (10) may include an upper left speaker section (11) and an upper right speaker section (12), as illustrated in FIG. 1. In the case of the upper left speaker section (11), the left speaker section is configured to be positioned at the upper right side of the main body of the TV receiver and transmit a left sound signal to the left ear of a user facing the TV receiver, and in the case of the upper right speaker section (12), the right speaker section is configured to be positioned at the upper left side of the main body of the TV receiver and transmit a right sound signal to the right ear of a user facing the TV receiver.

In the case of the down speaker unit (20), it may include a down left speaker section (21) and a down right speaker section (22).

In the case of the down left speaker section (21), as shown in Fig. 1, it is configured to be placed on the lower right side of the main body of the TV receiver and transmit the left sound signal to the left ear of the user facing the TV receiver.

In the case of the down light speaker section (22), as shown in Fig. 1, it is configured to be placed on the lower left side of the main body of the TV receiver and transmit the right sound signal to the right ear of the user facing the TV receiver.

In the case of the sound source processing unit (200), as shown in FIGS. 2 and 3, it is configured to separate the sound source by frequency, assign channels, and then distribute individual signals to the speakers and sound bar unit of the TV receiver.

In the case of the sound source processing unit (200), as shown in Fig. 3, it is equipped with various sub-detailed functional elements, and these elements will be described in detail below.

In the case of the sound source transmission unit (300), as shown in FIGS. 1 and 2, the sound source processing unit (200) distributes individual signals and individually transmits them to the speakers (see 10, 20) of the TV receiver and the sound bar unit (30).

In addition, in the case of the video extraction unit (400), it is a configuration that separately extracts a video source from an input source applied to a TV receiver.

In the case of the video extraction unit (400), in cases where the video source and sound source are not synchronized, it corresponds to a separately required component for tasks such as adjusting latency to synchronize these sources.

In the case of the sound source processing unit (200), as shown in FIG. 3, it may include a channel allocation unit (210) and an upmix unit (220).

In the case of the channel allocation unit (210), a physical address is allocated to each of the upper speaker unit (10), down speaker unit (20), and sound bar unit (30), and a crossover point of the sound source is set.

In the case of the upmix section (220), the sound source is divided into channels using information on the crossover point.

In the case of upmix, among the signal decomposition methods, i) Fourier transform, that is, the sound signal is expressed as a waveform over time, and this time domain signal can be converted into the frequency domain through Fourier transform, and this allows each frequency component to be analyzed and manipulated separately. In addition, among the signal decomposition methods, ii) multi-channel separation, that is, each channel can be separated from a stereo signal (2 channels) and processed separately.

In the case of IPMix, among the spatial imaging methods, i) time delay, that is, when sounds are played back with a slight time difference on different channels, the listener can feel as if the sounds are coming from a specific direction, which can create a three-dimensional effect, and ii) phase difference, that is, by adjusting the phase difference, the directionality of the sound can be adjusted.

In the case of upmix, among the signal reconstruction methods, i) a crossover network is used to send various frequency ranges to different speaker channels, for example, low frequencies can be sent to the subwoofer and high frequencies can be sent to the front speakers; ii) synthesis, that is, the adjusted signals are synthesized again to generate the final multi-channel output.

In the case of upmix, among the ambient modeling methods, i) reverb and echo, that is, in a real environment, sounds are reflected from walls or objects and heard from various directions, and artificial reverb (spatial sound) or echo (echo) can be added to simulate this effect.

In the case of upmix, among the optimization methods, adaptive filtering can analyze the input signal in real time and optimize the output of each channel to create the desired sound field.

In the case of the channel allocation unit (210) mentioned above, as shown in Fig. 4, it may include a speaker address designation unit (211) and a point setting unit (212).

In the case of the speaker addressing unit (211), as shown in Fig. 7, it is a configuration that assigns a physical address to each of the upper left speaker unit (11), the upper right speaker unit (12), the down left speaker unit (21), the down right speaker unit (22), and the sound bar unit (30).

In the example in Fig. 7, #LUS101, #RUS101, #LDS101, #RDS101 and #SBS101 can be assigned as physical addresses to each of the upper left speaker unit (11), the upper right speaker unit (12), the down left speaker unit (21), the down right speaker unit (22) and the sound bar unit (30).

In the case of the point setting unit (212), as illustrated in FIG. 8, it is a component that sets a predetermined first point range and a predetermined second point range as crossover points based on the frequency of the sound source.

As illustrated in FIG. 8, in the case of the point setting unit (212), a predetermined first point is designated within a predetermined first point range, and a predetermined second point is designated within the predetermined second point range, so that the sound source is conceptually divided into three bands based on frequency.

In Figure 8, moving from left to right corresponds to a high-frequency area, and moving from right to left corresponds to a low-frequency area.

The left end of the bar in the frequency band in Fig. 8 corresponds to 20 Hz, which is the low-frequency part of the audible frequency band, and the left end of the bar in the frequency band corresponds to 20 kHz, which is the high-frequency part of the audible frequency band.

It is preferable that the point setting section (212) designates an area centered on 120 Hz as a predetermined first point range and sets an area centered on 1000 Hz as a predetermined second point range.

In the case of the upmix unit (220), it may include a band separation unit (221) and a left and right separation unit (222).

In the case of the band separation unit (221), the frequency of the sound source is set to a low-band section below a preset first point, a mid-band section above a preset second point and above a preset second point, and a high-band section above a preset second point, thereby separating the band into a low-band section, a mid-band section, and a high-band section based on the frequency of the sound source.

If the band separation unit (221) designates 120 Hz as the predetermined first point and 1000 Hz as the predetermined second point, it can divide 20 Hz to 120 Hz into low range, 120 Hz to 1000 Hz into mid range, and 1000 Hz to 20000 Hz into high range. Of course, it is possible to adjust each crossover point more precisely within the predetermined first point range and the predetermined second point range depending on the speaker characteristics and enclosure (speaker box).

In the case of the left and right separation unit (222), as shown in Fig. 10, the low-band section, the middle-band section, and the high-band section separated by the band separation unit (221) based on frequency are separated and extracted as left and right signals, respectively.

In the case of the sound source processing unit (200), a signal compensation unit (230) may be further included, as shown in FIG. 3.

In the case of the signal compensation unit (230), as illustrated in FIG. 11, i) the right signal noise is filtered out from the left signal of the low-band section, the mid-band section, and the high-band section separated based on frequency by the band separation unit (221); and ii) the right signal noise is filtered out from the right signal of the low-band section, the mid-band section, and the high-band section separated based on frequency by the band separation unit (221).

The formula for finding mid and side is as follows.

L=M+S/√2 ; R=N-S/√2

and

M=L-R/√2 ; S=L-R/√2

Here, M and S are,

√L+R= M

√L-R= S

It corresponds to .

The sound source processing unit (200) may further include a signal distribution unit (240).

In the case of the signal distribution unit (240), the speaker address designation unit (211) physically assigns the physical addresses of the upper left speaker unit (11), the upper right speaker unit (12), the down left speaker unit (21), the down right speaker unit (22), and the sound bar unit (30), respectively, to which the right signal of the high-band section, the left signal of the high-band section, the right signal of the mid-band section, the left signal of the mid-band section, and the right signal and left signal of the low-band section are distributed based on the frequency by the band separation unit (221).

The sound source processing unit (200) may further include a phantom image generating unit (250).

The phantom image generation unit (250), as illustrated in FIG. 12, tracks an object of a video source extracted separately by the video extraction unit (400), and, based on the tracked object, selectively applies differential transmission timing of sound signals between the left and right signals of the low-band section, the mid-band section, and the high-band section separated by the band separation unit (221) based on frequency.

In addition, in the case of the phantom image generation unit (250), the video extraction unit (400) can track an object of a video source extracted separately, and based on the tracked object, selectively apply differential transmission timing of a sound signal between a low-band section, a mid-band section, and a high-band section separated by frequency by a band separation unit (241).

In the case of the point processing unit (213), the first point set in advance and the second point set in advance are respectively expressed as a sequence of binary numbers 1 and 0, and then these are sequentially expressed as a sequence array, and then these are rolled in the shape of a circle. Thereafter, as illustrated in FIG. 13, an optionally set omitting area is set, and this is applied to the sequence of 1, 0 in the shape of a rolled circle, and then the information of 1, 0 in the applied omitting area part is selectively deleted. Through this, the information of each of the first point set in advance and the second point set in advance cannot be known from the outside unless the processing rule information of the point processing unit (213) is known when an outsider randomly accesses the information.

The scope of the rights of the present invention is determined by the matters described in the claims, and the parentheses used in the claims are not described for optional limitation, but are used to indicate clear elements, and the description within the parentheses should also be interpreted as essential elements.

Claims (10)

In a system that produces three-dimensional sound from the sound of a TV receiver by utilizing a sound bar unit placed at the bottom of the TV receiver, A sound source extraction unit that separately extracts a sound source from an input source applied to the above TV receiver; A sound source processing unit that separates the sound source by frequency and allocates channels, and then distributes individual signals to the speakers of the TV receiver and the sound bar unit; A sound source transmission unit that individually transmits the signals distributed by the sound source processing unit to the speakers of the TV receiver and the sound bar unit, respectively; and A TV sound surround sound system utilizing a sound bar, characterized in that it includes a video extraction unit that separately extracts a video source from an input source applied to the TV receiver. In the first paragraph, the TV receiver, An upper speaker unit that is placed at the upper part of the main body of the TV receiver and generates sound; and A down speaker unit is disposed at the lower part of the main body of the TV receiver and generates sound. The above upper speaker unit, An upper left speaker section positioned on the upper right side of the main body of the TV receiver to transmit a left sound signal to the left ear of a user facing the TV receiver; and The TV receiver comprises an upper right speaker section positioned on the upper left side of the main body thereof to transmit a right sound signal to the right ear of a user facing the TV receiver. The above down speaker unit is, A down left speaker section positioned on the lower right side of the main body of the TV receiver to transmit a left sound signal to the left ear of a user facing the TV receiver; and A TV sound surround sound system utilizing a sound bar, characterized in that it includes a down light speaker section positioned on the lower left side of the main body of the TV receiver and transmitting a right sound signal to the right ear of a user facing the TV receiver. In the second paragraph, the sound source processing unit, A channel allocation unit that assigns physical addresses to each of the upper speaker unit, the down speaker unit, and the sound bar unit, and sets a crossover point of the sound source; and A TV sound surround sound system utilizing a sound bar, characterized by including an upmix section that divides the sound source into channels using information of the crossover point. In the third paragraph, the channel allocation unit, A speaker address designation unit that assigns a physical address to each of the upper left speaker unit, the upper right speaker unit, the down left speaker unit, the down right speaker unit, and the sound bar unit; and A TV sound surround sound system utilizing a sound bar, characterized in that it includes a point setting unit that sets a preset first point range and a preset second point range as the crossover point based on the frequency of the sound source. In the fourth paragraph, the point setting section, A TV sound surround sound system utilizing a sound bar, characterized in that the sound source is conceptually divided into three bands based on frequency by specifying a first point preset within the first point range and a second point preset within the second point range. In the fifth paragraph, the upmix section, A band separation unit that separates the band into the low-band section, the mid-band section, and the high-band section based on the frequency of the sound source, by setting the range below the preset first point as a low-band section, the range above the preset first point as a mid-band section, and the range above the preset second point as a high-band section based on the frequency of the sound source; and A TV sound surround sound system utilizing a sound bar, characterized in that it includes a left and right separation unit that separates and extracts the low-band section, the mid-band section, and the high-band section separated by the frequency by the above-mentioned band separation unit into a left signal and a right signal, respectively. In the sixth paragraph, the sound source processing unit, i) Filtering out noise from the right signal among the left signals of the low-band section, the middle-band section, and the high-band section separated by frequency by the above-mentioned band separation unit; ii) A TV sound surround sound system utilizing a sound bar, characterized in that it further includes a signal compensation unit that filters out right signal noise among the right signals of the low-band section, the mid-band section, and the high-band section separated by the frequency by the band separation unit. In the sixth paragraph, the sound source processing unit, A TV sound surround sound system utilizing a sound bar, characterized in that it further includes a signal distribution unit that distributes the right signal of the high-band section, the left signal of the high-band section, the right signal of the mid-band section, the left signal of the mid-band section, and the right signal and the left signal of the low-band, which are separated based on the frequency by the band separation unit, to the physical addresses of each of the upper left speaker unit, the upper right speaker unit, the down left speaker unit, the down right speaker unit, and the sound bar unit physically assigned by the speaker address designation unit. In the seventh paragraph, the sound source processing unit, The video extraction unit tracks the object of the video source extracted separately, and based on the tracked object, A TV sound surround sound system utilizing a sound bar, characterized in that it further includes a phantom image generating unit that selectively applies differential transmission timing of sound signals between the left signal and the right signal of the low-band section, the mid-band section, and the high-band section separated by the frequency by the band separating unit. In the seventh paragraph, the sound source processing unit, The video extraction unit tracks the object of the video source extracted separately, and based on the tracked object, A TV sound surround sound system utilizing a sound bar, characterized in that it further includes a phantom image generating unit that selectively applies differential transmission timing of sound signals between the low-band section, the mid-band section, and the high-band section separated by the frequency by the band separation unit.

Images