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    Method for separating audio sources and audio system using the same
    1.
    发明授权
    Method for separating audio sources and audio system using the same 有权
    用于分离音频源和使用其的音频系统的方法

    公开(公告)号：US09466312B2

    公开(公告)日：2016-10-11

    申请号：US14553188

    申请日：2014-11-25

    Applicant: KOREA ELECTRONICS TECHNOLOGY INSTITUTE

    Inventor： Choong Sang Cho ,  Je Woo Kim ,  Byeong Ho Choi ,  Hwa Seon Shin

    IPC: H04R5/04 ,  G10L21/0272

    CPC classification number: G10L21/0272

    Abstract: A method for separating audio sources and an audio system using the same are provided. The method introduces the concept of a residual signal to separate a mixed audio signal into audio sources, and separates an audio signal corresponding to at least two of the audio sources as a residual signal and processes the audio signal separately. Therefore, audio separation performance can be improved. In addition, the method re-separates a separated residual signal and adds the separated residual signals to corresponding audio sources. Therefore, audio sources can be separated more safely.

    Abstract translation: 提供了一种用于分离音频源的方法和使用其的音频系统。 该方法引入残留信号的概念以将混合音频信号分离成音频源，并且将与至少两个音频源相对应的音频信号分离为残差信号并分别处理音频信号。 因此，可以提高音频分离性能。 此外，该方法重新分离分离的残差信号，并将分离的残留信号添加到相应的音频源。 因此，音频源可以更安全地分离。

    Nozzle clogging defect compensating method for binder jetting stack manufacturing means
    5.
    发明授权
    Nozzle clogging defect compensating method for binder jetting stack manufacturing means 有权

    公开(公告)号：US12220921B2

    公开(公告)日：2025-02-11

    申请号：US17780117

    申请日：2020-11-10

    Applicant: Korea Electronics Technology Institute

    Inventor： Hwa Seon Shin ,  Sung Hun Park ,  Hye In Lee ,  Sung Hwan Chun ,  Jin Min Jang

    IPC: B41J2/21 ,  B41J2/165

    Abstract: Provided is a nozzle clogging defect compensating method for compensating for a nozzle clogging defect appearing in a binder jetting stack manufacturing means. The nozzle clogging defect compensating method according to an embodiment of the present invention comprises the steps of: determining a defect occurrence region when a clogging defect of a nozzle used in the binder jetting stack manufacturing means occurs; determining whether compensation for the detect occurrence region is possible; when the compensation is possible, generating defect information and reflecting the defect information in an output code; setting a defect compensation region on the basis of the defect information; determining a defect compensation type of the defect compensation region; and reflecting a result of the determining in the output code. Accordingly, a replacement time and a replacement cost of an output head where the nozzle clogging defect has occurred can be saved, thereby reducing the unit production cost of a binder jetting type stack manufacturing output.

    Method for generating hollow structure based on 2D laminated cross-sectional outline for 3D printing
    6.
    发明授权
    Method for generating hollow structure based on 2D laminated cross-sectional outline for 3D printing 有权

    公开(公告)号：US11798231B2

    公开(公告)日：2023-10-24

    申请号：US17623104

    申请日：2020-11-10

    Applicant: Korea Electronics Technology Institute

    Inventor： Hye In Lee ,  Hwa Seon Shin ,  Sung Hwan Chun ,  Sung Hun Park ,  Ji Min Jang

    IPC: G06T17/20 ,  G06T7/20

    CPC classification number: G06T7/20

    Abstract: Provided is a method for generating a hollow structure of a 3D model on the basis of a 2D laminated cross-sectional outline to reduce the amount of using a material or the weight of a printed matter during laminating and manufacturing. The method for generating a hollow structure based on a 2D laminated cross-sectional outline, according to an embodiment of the present invention, comprises the steps of: slicing the 3D model; generating a hollow structure outline on the basis of the result of the slicing; detecting an overhang area between adjacent hollow structure outlines; recalculating the hollow structure outline according to the result of detecting the overhang area; and generating a hollow structure mesh on the basis of the recalculated hollow structure outline. Accordingly, because 2D laminated cross-sectional data is used, a hollow structure can be generated without separate data processing, thereby reducing a calculation burden. In addition, because the hollow structure is processed so that an overhang area is not generated when generating the hollow structure, a support is not needed therein, thereby making post-processing easy.

    Method for producing 3D mesh surface characteristic-based support for laminate manufacturing
    7.
    发明授权
    Method for producing 3D mesh surface characteristic-based support for laminate manufacturing 有权

    公开(公告)号：US11613082B2

    公开(公告)日：2023-03-28

    申请号：US17256849

    申请日：2020-02-20

    Applicant: Korea Electronics Technology Institute

    Inventor： Hwa Seon Shin ,  Hye In Lee ,  Sung Hwan Chun ,  Ji Min Jang ,  Sung Hun Park

    IPC: B29C64/386 ,  B29C64/40 ,  B33Y50/02 ,  G06T17/20 ,  B22F10/38 ,  B22F10/47 ,  B22F10/80 ,  G06T19/20 ,  B33Y50/00

    Abstract: A method for producing a support structure of a 3D model for 3D printing is provided. A method for producing a support according to an embodiment of the present invention comprises the steps of: dividing a surface constituting a 3D model into multiple surface patches; classifying respective divided surface patches according to geometric characteristics; and producing supports corresponding to the classified characteristics with regard to respective surface patches. Accordingly, during metal laminate manufacturing, the output stability may be improved while reducing the support producing process time. In addition, the surfaces may be expressed by different colors according to the result of geometric characteristic classification, and the supports may also be expressed by different colors according to the type, thereby playing the role of guide lines such that the user can recognize the shape of the surfaces and the type of supports to be installed on the corresponding surfaces. Moreover, the size of a support tip is determined in view of the thickness of the area in which a support is to be produced, thereby preventing the problem of output quality degradation which would otherwise occur because the support cannot move upwards through an output part.

    3D printing slicing method for solving tolerance problem
    9.
    发明授权
    3D printing slicing method for solving tolerance problem 有权

    公开(公告)号：US12202206B2

    公开(公告)日：2025-01-21

    申请号：US17623112

    申请日：2021-11-03

    Applicant: Korea Electronics Technology Institute

    Inventor： Hwa Seon Shin ,  Hye In Lee ,  Sung Hwan Chun ,  Sung Hun Park

    IPC: B29C64/393 ,  B33Y50/02 ,  G06T19/20

    Abstract: Provided are a method and a system for solving a tolerance problem which may occur in a slicing quantization (staircase effect) process of 3D printing which slices a 3D model and laminates layers one by one. According to an embodiment of the present disclosure, a 3D model slicing method includes the steps of: receiving, by a 3D model slicing system, an input of data of a 3D model to 3D print; examining, by the 3D model slicing system, a dimension of a layer thickness of the inputted 3D model; correcting, by the 3D model slicing system, a size of a layer for slicing, based on a result of the examining; and slicing, by the 3D model slicing system, the corrected 3D model. Accordingly, by preserving a dimension within a layer thickness, a problem that a concavo-convex portion is lost in a slicing quantization process of 3D printing according to a slicing position within a layer thickness, and a tolerance occurs is solved.

    Method for monitoring 3D printing equipped with 3D printing slicer and recursive loop structure
    10.
    发明授权
    Method for monitoring 3D printing equipped with 3D printing slicer and recursive loop structure 有权

    公开(公告)号：US11548227B2

    公开(公告)日：2023-01-10

    申请号：US16499370

    申请日：2018-03-27

    Applicant: Korea Electronics Technology Institute

    Inventor： Hwa Seon Shin ,  Sung Hwan Chun ,  Hye In Lee

    IPC: B33Y50/02 ,  B29C64/386 ,  B33Y40/00 ,  B22F10/30

    Abstract: Provided is a method for monitoring 3D printing equipped with a 3D printing slicer and a recursive loop structure. A 3D printing method according to an embodiment of the present invention sets up a slicing environment for 3D printing of a 3D model, generates a mechanical code by performing slicing according to the setup environment, monitors the status of the 3D printing according to the generated mechanical code, and, depending on the monitoring result, determines whether or not to re-perform the setup and subsequent steps. Accordingly, by semi- or fully automating the 3D printing engineering process, the time and effort for engineering performance involving human participation are reduced, and the human resource is concentrated on a more important area, such that the effects of enhancing the 3D printing output quality and assuring the quality can be expected.

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