TV sound stereophonic sound system using sound bar

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 using a sound bar

[0001] The present invention relates to a TV sound surround sound system, and more specifically, to a TV sound surround sound system technology field relating 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.

[0002]

[0003] The 3D audio market was valued at USD 6.28 billion in 2022 and is projected to reach USD 19.07 billion by 2030, representing a compound annual growth rate (CAGR) of 14.9%. Growth is driven by advancements in the media and entertainment sector, the latest AV technologies, the proliferation of the gaming industry, and the growing trend toward online 3D music streaming. The market is segmented into hardware, software, and services. Regionally, Asia Pacific holds the largest market share and is expected to witness the highest growth rate during the forecast period.

[0004] A related prior art patent document exists, “A device for reproducing stereoscopic sound using virtual speaker technology in a multi-channel speaker environment (Registration No. 10-0849030, Patent Document 1).”

[0005] 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.

[0006] Patent Document 1 provides a three-dimensional sound reproduction system that uses a virtual speaker technology that determines an input sound source signal and determines a signal as a stereo signal to make 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 reproduced on a two-channel speaker through down-mixing, it allows the user to feel an effect similar to that of using a 5.1-channel speaker by using stereo speakers and virtual speakers.

[0007] There exists a “device and method for generating stereoscopic sound with sound localization function (Registration No. 10-0566131, Patent Document 2).”

[0008] Patent Document 2 The invention relates to a method and device for extracting location information of a sound object from a user or graphic information to position a played sound in three-dimensional space.

[0009] Patent Document 2 The invention includes a location information receiving device that inputs location information for positioning an original sound at a desired location; a three-dimensional sound synthesizer that converts the original sound, the location information input from the location information receiving device, and an HRTF DB to form a sound image at the desired location; a selection device that 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 that removes crosstalk that occurs when the output is played back through a speaker and outputs it to a speaker if the result of selection in the selection device is speaker playback.

[0010] There exists a “Method and device for reproducing three-dimensional sound (Registration No. 10-2608824, Patent Document 3).”

[0011] Patent Document 3 The invention comprises the steps of receiving a multi-channel signal including a height input channel signal, a horizontal input channel signal, and flag information, obtaining a first downmix matrix for three-dimensional rendering as an output layout, obtaining a second downmix matrix for two-dimensional rendering as an output layout, and 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 an applause sound characteristic, and the second frame is rendered in correspondence with the flag information of the second frame indicating a general sound characteristic. A method for rendering an audio signal is disclosed, which is rendered using a first downmix matrix.

[0012] There exists a "sound control system for implementing three-dimensional sound effects in augmented reality and virtual reality (registration number 10-2398850, patent document 4)".

[0013] Patent Document 4 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 spatial information in which a user is actually located and user location information in the corresponding space; a calculation unit that receives actual spatial 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 spatial information and object information to generate absolute location coordinates of an optimized object in an actual space; a control unit that generates optimized sound control information at the location of a tracked object based on the absolute location coordinates of the object generated by the analysis unit; and a driving unit that adjusts the volume of a sound source signal output from content based on the control information for each channel of a speaker.

[0014] There exists a "Method and device for providing multi-viewer video and 3D stereoscopic sound (Registration No. 10-1534295, Patent Document 5)".

[0015] Embodiment 5 of Patent Document provides a method and device for providing a multi-viewer image and 3D stereoscopic sound, which display 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, output a multi-channel audio signal corresponding to the multi-channel image, and, when variation information about the corresponding object is recognized, generate a reconstructed stereoscopic image by reconstructing the stereoscopic image based on the variation information and output the reconstructed stereoscopic image by controlling the output of each audio signal included in the multi-channel audio signal, thereby displaying a 3D spatial sense, and which can provide a stereoscopic and realistic surround effect without having to have a separate additional speaker for implementing 3D sound.

[0016]

[0017] 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 problems to be solved.

[0018] 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.

[0019] Second, the introduction of a physical device external to the TV and the use of an algorithm to produce 3D surround sound are possible.

[0020] Third, it ensures that there is no signal interference between the left and right speakers, thereby producing a clean, three-dimensional sound through the left and right speakers.

[0021] The problems to be solved by the present invention are not limited to those mentioned above, and other problems not mentioned can be clearly understood by those skilled in the art from the description below.

[0022]

[0023] The TV sound stereophonic system utilizing a sound bar according to the present invention has the following problem-solving means to solve the above-mentioned problem.

[0024] 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 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 by frequency and allocates channels, and then distributes individual signals to a speaker 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 speaker of the TV receiver and the sound bar unit, respectively; and a video extraction unit that separately extracts a video source from an input source applied to the TV receiver.

[0025] 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 in the upper part of the main body of the TV receiver to generate sound; and a down speaker unit disposed in the lower part of the main body of the TV receiver to generate sound, wherein the upper speaker unit includes an upper left speaker unit disposed in the upper right part 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 an upper right speaker unit disposed in the upper left part of the main body of the TV receiver to transmit a right sound signal to the right ear of a user facing the TV receiver, and the down speaker unit includes a down left speaker unit disposed in the lower right part 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 down right speaker unit disposed in the lower left part of the main body of the TV receiver to transmit a right sound signal to the right ear of a user facing the TV receiver.

[0026] 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 a physical address 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.

[0027] 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 assignment 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.

[0028] In the case of a TV sound stereophonic system utilizing a sound bar according to the present invention, the point setting unit may be characterized in that it designates a first point set in advance within the first point range set in advance, and designates 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.

[0029] 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 low-band section below the preset first point based on the frequency of the sound source, a mid-band section above the preset first point and below the preset second point, and a high-band section above the preset second point, and 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; and 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 band separation unit based on the frequency into a left signal and a right signal, respectively.

[0030] 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 among left signals 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 among right signals of the low-band section, the mid-band section, and the high-band section separated based on frequency by the band separation unit.

[0031] 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 left signal of the low-band, 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.

[0032] 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 the band separation unit based on the tracked object.

[0033] 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.

[0034]

[0035] A TV sound stereophonic system utilizing a sound bar according to the present invention having the above configuration provides the following effects.

[0036] First, by applying only a software algorithm, the 2D sound information input to the TV is processed through software, and a three-dimensional sound is produced through the algorithm without the introduction of physical hardware such as chips.

[0037] Second, by introducing a sound bar, i.e. a straight-line speaker placed at the bottom of the TV, 3D surround sound is produced using an algorithm.

[0038] 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.

[0039] 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.

[0040]

[0041] FIG. 1 is a general conceptual diagram of a TV sound surround sound system utilizing a sound bar according to one embodiment of the present invention.

[0042] FIG. 2 is a block diagram showing the main configuration of a TV sound surround sound system using a sound bar according to one embodiment of the present invention.

[0043] 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.

[0044] 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.

[0045] 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.

[0046] 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.

[0047] FIG. 7 is a conceptual diagram illustrating 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.

[0048] FIG. 8 is a conceptual diagram explaining the function of a point setting unit of a TV sound stereo system using a sound bar according to one embodiment of the present invention.

[0049] FIG. 9 is a conceptual diagram for explaining the function of a band separation unit of a TV sound surround sound system using a sound bar according to one embodiment of the present invention.

[0050] FIG. 10 is a conceptual diagram for explaining the function of the left and right separation parts of a TV sound surround sound system using a sound bar according to one embodiment of the present invention.

[0051] FIG. 11 is a conceptual diagram for explaining the function of a signal compensation unit of a TV sound surround sound system using a sound bar according to one embodiment of the present invention.

[0052] FIG. 12 is a conceptual diagram for explaining the function of a phantom image generating unit of a TV sound stereoscopic sound system using a sound bar according to one embodiment of the present invention.

[0053] FIG. 13 is a conceptual diagram for explaining the function of a point processing unit of a TV sound stereophonic system using a sound bar according to one embodiment of the present invention.

[0054]

[0055] The TV sound surround sound system utilizing a sound bar according to the present invention can be modified in various ways and has various embodiments. 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, but rather to encompass all modifications, equivalents, and alternatives falling within the technical spirit and scope of the present invention.

[0056] FIG. 1 is a conceptual diagram illustrating an overall TV sound surround sound system utilizing a sound bar according to an embodiment of the present invention. FIG. 2 is a block diagram illustrating the main components 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 illustrating a sound source processing unit and its sub-components 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 illustrating a channel allocation unit and its sub-components 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 illustrating an upmix unit and its sub-components 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 illustrating a signal distribution unit and its sub-components 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 illustrating 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 illustrating 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 using 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 using 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 using 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 using 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 stereophonic system using a sound bar according to one embodiment of the present invention.

[0057] In the case of a TV sound 3D sound system utilizing a sound bar according to the present invention, as illustrated in FIG. 1, it corresponds to a system for generating 3D 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.

[0058] 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.

[0059] 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.

[0060] For this purpose, in the case of a TV sound stereophonic system using 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.

[0061] The term "unit" here is not defined as a functional or conceptual unit of a physical chip or mechanical device, but as a conceptual definition centered on a unit of software function expressed through an algorithm.

[0062] That is, the unit in the present invention corresponds to a conceptual unit divided into functional units of an algorithm, and its sub-components are given the suffix “part”, which also corresponds to a functionally centered conceptual unit of a sub-concept of the unit, which is a functionally centered conceptual unit.

[0063] 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.

[0064] 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).

[0065] In the case of the upper speaker unit (10), as shown in Fig. 1, it is configured to be placed at the upper part of the main body of the TV receiver and generate sound.

[0066] In the case of the down speaker unit (20), as shown in Fig. 1, it is configured to generate sound by being placed at the lower part of the main body of the TV receiver.

[0067] 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), it is configured to be arranged on 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), it is configured to be arranged on 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.

[0068] 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).

[0069] 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.

[0070] 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.

[0071] 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.

[0072] 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.

[0073] 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).

[0074] 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.

[0075] 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.

[0076] 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).

[0077] 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 configuration is set to set the crossover point of the sound source.

[0078] In the case of the upmix section (220), it is a configuration that divides the sound source into channels using information on the crossover point.

[0079] 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 to 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 in a stereo signal (2 channels) can be separated and processed individually.

[0080] In the case of IPMix, among the spatial imaging methods, i) Time Delay, that is, when sounds are played back on different channels with a slight time difference, 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.

[0081] 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 create the final multi-channel output.

[0082] 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.

[0083] 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.

[0084] 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).

[0085] In the case of the speaker address designation 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).

[0086] 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), upper right speaker unit (12), down left speaker unit (21), down right speaker unit (22) and sound bar unit (30).

[0087] 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.

[0088] 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 a predetermined second point range, so that the sound source is conceptually divided into three bands based on frequency.

[0089] In Figure 8, moving from left to right corresponds to a high-frequency region, and moving from right to left corresponds to a low-frequency region.

[0090] The left end of the bar of 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 of the frequency band corresponds to 20 kHz, which is the high frequency part of the audible frequency band.

[0091] It is preferable that the point setting unit (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.

[0092] In the case of the upmix unit (220), it may include a band separation unit (221) and a left and right separation unit (222).

[0093] In the case of the band separation unit (221), the band is separated into a low-band section, a mid-band section, and a high-band section by setting the range below a preset first point based on the frequency of the sound source as the low-band section, the range above the preset first point and below a preset second point as the mid-band section, and the range above the preset second point as the high-band section.

[0094] 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 point more precisely within the predetermined first point range and the predetermined second point range depending on the speaker characteristics and enclosure (speaker box).

[0095] In the case of the left and right separation unit (222), as shown in Fig. 10, the low-band section, mid-band section, and high-band section separated by frequency by the band separation unit (221) are configured to be separated and extracted as left and right signals, respectively.

[0096] In the case of the sound source processing unit (200), as shown in FIG. 3, a signal compensation unit (230) may be further included.

[0097] 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).

[0098] The formula for calculating mid and side is as follows.

[0099] L=M+S / √2 ; R=NS / √2

[0100] and

[0101] M=LR / √2 ; S=LR / √2

[0102] Here, M and S are,

[0103] √L+R= M

[0104] √LR= S

[0105] It corresponds to .

[0106] The sound source processing unit (200) may further include a signal distribution unit (240).

[0107] 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, and 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 left signal of the low-band section, which are separated based on frequency by the band separation unit (221).

[0108] The sound source processing unit (200) may further include a phantom image generation unit (250).

[0109] 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 a sound signal 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 band separation unit (221) based on the frequency.

[0110] In addition, in the case of the phantom image generation unit (250), the video extraction unit (400) may track an object of a video source that has been separately extracted, and based on the tracked object, the transmission timing of the sound signal may be selectively applied differentially between the low-band section, the mid-band section, and the high-band section separated by frequency by the band separation unit (241).

[0111] In the case of the point processing unit (213), the first point and the second point are each represented by a sequence of binary numbers 1 and 0, and then sequentially represented as a sequence array, which is then rolled in a circular shape. Thereafter, as illustrated in FIG. 13, an optionally set omitting area is set, and this is applied to the sequence of 1 and 0 in the shape of a rolled circle, and then the information of 1 and 0 in the applied omitting area is selectively deleted. Through this, the information of each of the first point and the second point is not known from the outside unless the processing rule information of the point processing unit (213) as described above is known when an external party randomly accesses the information.

[0112] The scope of the present invention is determined by the matters described in the patent claims, and the parentheses used in the patent claims are not written for optional limitation, but are used to indicate clear components, and the description within the parentheses should also be interpreted as essential components.

Claims

1. 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.

2. In paragraph 1, 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.

3. 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.

4. 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.

5. In paragraph 4, 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.

6. In paragraph 5, the upmix unit, 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.

7. In paragraph 6, 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.

8. In paragraph 6, 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.

9. In paragraph 7, 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.

10. In paragraph 7, 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