公开(公告)号：US09172977B2

公开(公告)日：2015-10-27

申请号：US11449589

申请日：2006-06-09

申请人： Sangjo Lee ,  Shihwa Lee ,  Jaesung Park ,  Hyeyun Kim ,  Jihun Kim ,  Hyeyeon Chung ,  Doohyun Kim

发明人： Sangjo Lee ,  Shihwa Lee ,  Jaesung Park ,  Hyeyun Kim ,  Jihun Kim ,  Hyeyeon Chung ,  Doohyun Kim

IPC分类号： H04N7/12 ,  H04N19/86 ,  H04N19/139 ,  H04N19/159 ,  H04N19/176 ,  H04N19/61 ,  H04N19/117 ,  H04N19/12 ,  H04N19/137 ,  H04N19/44 ,  H04N19/527

CPC分类号： H04N19/86 ,  H01L2924/0002 ,  H04N19/117 ,  H04N19/12 ,  H04N19/137 ,  H04N19/139 ,  H04N19/159 ,  H04N19/176 ,  H04N19/44 ,  H04N19/527 ,  H04N19/61 ,  H01L2924/00

摘要： Provided is a filtering apparatus, method, and medium for a multi-format codec, in which a blocking artifact of decoded video data is removed. The filtering apparatus includes a compression format detection unit, a block strength determination unit, a table determination unit, and a first filtering unit. The compression format detection unit detects a video compression format of the decoded video data. The block strength determination unit determines a block strength indicating a filtering strength with respect to the decoded video data according to the detected video compression format. The table determination unit determines a filtering table differently according to the block strength when the block strength is greater than a predetermined threshold. The first filtering unit performs filtering on the decoded video data in units of a block using the determined filtering table.

摘要翻译： 提供了一种用于多格式编解码器的滤波装置，方法和介质，其中解码的视频数据的块伪影被去除。 滤波装置包括压缩格式检测单元，块强度确定单元，表格确定单元和第一滤波单元。 压缩格式检测单元检测解码的视频数据的视频压缩格式。 块强度确定单元根据检测到的视频压缩格式来确定表示相对于解码视频数据的滤波强度的块强度。 当块强度大于预定阈值时，表确定单元根据块强度不同地确定滤波表。 第一滤波单元使用确定的滤波表对块的单位对解码的视频数据进行滤波。

公开(公告)号：US08069048B2

公开(公告)日：2011-11-29

申请号：US11528314

申请日：2006-09-28

申请人： Dohyung Kim ,  Miyoung Kim ,  Shihwa Lee ,  Sangwook Kim

发明人： Dohyung Kim ,  Miyoung Kim ,  Shihwa Lee ,  Sangwook Kim

IPC分类号： G10L19/00

CPC分类号： G10L19/24

摘要： Provided is a scalable encoding method, apparatus, and medium. The method includes: encoding a base layer and encoding a first enhancement layer and a second enhancement layer in a frame having the base layer; and generating an encoded frame by synthesizing the encoded results. Accordingly, only if the loss of the encoding frame is not as great as the encoded first enhancement layer is damaged, a case where speech restoration with respect to partial frequency bands must be given up does not occur. Furthermore, since an encoder divides the second enhancement layer into a plurality of layers in a horizontal or vertical direction, considering a distribution pattern of data belonging to the second enhancement layer and first encodes a layer in which lots of data are distributed among the divided layers, loss of audio information can be minimized even if a portion of the encoded second enhancement layer is damaged.

摘要翻译： 提供了可扩展的编码方法，装置和介质。 该方法包括：在具有基本层的帧中编码基本层并对第一增强层和第二增强层进行编码; 以及通过合成编码结果来生成编码帧。 因此，只有当编码帧的损失不如编码的第一增强层损耗那么大时，不会发生关于部分频带的语音恢复的情况。 此外，由于编码器在水平或垂直方向上将第二增强层划分为多个层，考虑属于第二增强层的数据的分布模式，并且首先编码在划分层之间分布有大量数据的层 即使编码的第二增强层的一部分被损坏，音频信息的丢失也可以被最小化。

公开(公告)号：US07620543B2

公开(公告)日：2009-11-17

申请号：US11033733

申请日：2005-01-13

申请人： Dohyung Kim ,  Sangwook Kim ,  Ennmi Oh ,  Junghoe Kim ,  Yangseock Seo ,  Shihwa Lee

发明人： Dohyung Kim ,  Sangwook Kim ,  Ennmi Oh ,  Junghoe Kim ,  Yangseock Seo ,  Shihwa Lee

IPC分类号： G10L19/00

CPC分类号： G10L19/008 ,  G10L19/0017 ,  G10L19/173

摘要： A method, medium, and apparatus for converting compressed audio data, including decoding compressed audio input data, in accordance with a corresponding compression format, coding a result of the decoding, in accordance with a predetermined compression format, and combining a result of the coding with the side information to generate audio output data to be compressed according to the predetermined compression format.

摘要翻译： 一种根据相应压缩格式转换压缩音频数据的方法，介质和装置，包括解码压缩音频输入数据，根据预定压缩格式编码解码结果，并将编码结果 利用侧信息根据预定的压缩格式生成要压缩的音频输出数据。

公开(公告)号：US20060279654A1

公开(公告)日：2006-12-14

申请号：US11411967

申请日：2006-04-27

申请人： Sangjo Lee ,  Wooshik Kim ,  Jongseon Kim ,  Shihwa Lee ,  Doohyun Kim ,  Bomyun Kim

发明人： Sangjo Lee ,  Wooshik Kim ,  Jongseon Kim ,  Shihwa Lee ,  Doohyun Kim ,  Bomyun Kim

IPC分类号： H04N11/04

CPC分类号： H04N19/124 ,  H04N19/105 ,  H04N19/11 ,  H04N19/115 ,  H04N19/15

摘要： A display driving apparatus and method using a display device, such as a liquid crystal display device, and a medium for implementing a method of display driving method are provided. The display driving apparatus includes: an encoding unit which compresses and encodes image data to be displayed by the display device; a memory which stores the encoded image data; a memory control unit which stores the encoded image data in the memory and reads the encoded image data from the memory; and a decoding unit which decodes the encoded image data read out from the memory to restore the image data. Input image data is compressed and encoded in units of blocks, and the encoded image data is stored in a memory. Thereafter, the encoded image data stored in the memory is decoded, and the decoded result is output to a display device. Thus, it is possible to reduce the size of a memory included in a display driving apparatus without deteriorating the quality of an image displayed.

摘要翻译： 提供了一种使用诸如液晶显示装置的显示装置和用于实现显示驱动方法的方法的介质的显示驱动装置和方法。 显示驱动装置包括：编码单元，对由显示装置显示的图像数据进行压缩编码; 存储编码图像数据的存储器; 存储器控制单元，其将编码图像数据存储在存储器中，并从存储器读取编码图像数据; 以及解码单元，其对从存储器读出的编码图像数据进行解码以恢复图像数据。 输入图像数据以块为单位被压缩和编码，并且编码的图像数据被存储在存储器中。 此后，存储在存储器中的编码图像数据被解码，并将解码结果输出到显示装置。 因此，可以减小显示驱动装置中包括的存储器的尺寸，而不会劣化显示的图像的质量。

公开(公告)号：US20060116886A1

公开(公告)日：2006-06-01

申请号：US11210908

申请日：2005-08-25

申请人： Junghoe Kim ,  Sangchul Ko ,  Shihwa Lee ,  Eunmi Oh ,  Miao Lei

发明人： Junghoe Kim ,  Sangchul Ko ,  Shihwa Lee ,  Eunmi Oh ,  Miao Lei

IPC分类号： G10L21/04

CPC分类号： G10L19/008 ,  H04S3/008 ,  H04S7/30 ,  H04S2400/03 ,  H04S2420/01

摘要： An apparatus for and a method of processing a multi-channel audio signal using space information. The apparatus includes: a main coding unit down mixing a multi-channel audio signal by applying space information to surround components included in the multi-channel audio signal, generating side information using the multi-channel audio signal or a stereo signal of a down-mixed result, coding the stereo signal and the side information, and transmitting the coded result as a coding signal; and a main decoding unit receiving the coding signal, decoding the stereo signal and the side information using the received coding signal, up mixing the decoded stereo signal using the decoded side information, and restoring the multi-channel audio signal.

摘要翻译： 一种使用空间信息处理多声道音频信号的装置和方法。 该装置包括：主编码单元，通过将包含在多声道音频信号中的包围成分的空间信息应用于多声道音频信号，使用多声道音频信号产生侧信息或下行信号的立体声信号， 混合结果，对立体声信号和侧信息进行编码，并将编码结果作为编码信号发送; 以及主解码单元，接收编码信号，使用接收的编码信号对立体声信号和侧信息进行解码，使用解码的侧信息进行解码的立体声信号的混合，以及恢复多声道音频信号。

公开(公告)号：US20060053006A1

公开(公告)日：2006-03-09

申请号：US11220568

申请日：2005-09-08

申请人： Miyoung Kim ,  Shihwa Lee ,  Dohyung Kim

发明人： Miyoung Kim ,  Shihwa Lee ,  Dohyung Kim

IPC分类号： G10L21/00

CPC分类号： G10L19/035

摘要： Provided are an audio encoding method and apparatus capable of fast bit rate control. The audio encoding method includes: converting audio sampling data into frequency domain data; adjusting a scalefactor value in each predetermined frequency band based on an available bits and allowed distortion of a psychoacoustic model to allocate a number of necessary bits to the frequency domain data and quantize the frequency domain data; and generating a bit stream based on the quantized data. The quantizing of the frequency domain data includes: obtaining the available bits for the frequency domain data; obtaining the common scalefactor value satisfying that the used bits is not larger than the available bits, using a difference the available bits and the used bits to quantize the audio data; calculating quantization noise in the each predetermined quantization band; and adjusting a scalefactor value of a quantization band in which the quantization noise exceeds the allowed distortion of the psychoacoustic model to quantize the audio data.

摘要翻译： 提供能够进行快速比特率控制的音频编码方法和装置。 音频编码方法包括：将音频采样数据转换成频域数据; 基于心理声学模型的可用位和允许的失真来调整每个预定频带中的比例因子值，以向频域数据分配多个必需比特并量化频域数据; 以及基于所述量化数据生成比特流。 频域数据的量化包括：获得频域数据的可用比特; 使用所述可用位和所使用的比特来量化所述音频数据的差异来获得满足所使用的比特不大于所述可用比特的公共比例因子值; 计算每个预定量化频带中的量化噪声; 以及调整所述量化噪声超过所述心理声学模型的允许失真量化所述音频数据的量化频带的比例因子值。

公开(公告)号：US20050254588A1

公开(公告)日：2005-11-17

申请号：US11080409

申请日：2005-03-16

申请人： Dohyung Kim ,  Junghoe Kim ,  Yangseock Seo ,  Shihwa Lee ,  Sangwook Kim

发明人： Dohyung Kim ,  Junghoe Kim ,  Yangseock Seo ,  Shihwa Lee ,  Sangwook Kim

IPC分类号： G10L19/00 ,  G10L19/02 ,  H03M7/30 ,  H04K1/10

CPC分类号： G10L19/035

摘要： A digital signal encoding method and apparatus using a plurality of lookup tables. The method includes: preparing a plurality of lookup tables storing numbers of allocated bits for encoding frequency bands of an input signal according to a characteristic of the input signal in a predetermined number of addresses; dividing an input signal in the time domain into signals in predetermined frequency bands; calculating address values of the frequency bands; selecting one of the plurality of lookup tables according to the characteristic of the input signal; extracting numbers of allocated bits of addresses having the calculated address values from the selected lookup table with respect to the frequency bands and allocating the numbers of bits to the frequency bands; and generating a bitstream by quantizing the input signal according to the numbers of allocated bits. Bit amount control suitable for a characteristic of an input signal can be performed by extracting numbers of allocated bits of frequency bands from an optimal lookup table selected according to the characteristic of the input signal. Also, an additional computational time can be reduced by using each occupancy rate per frequency band equal to each address of the lookup table as the characteristic of the input signal.

摘要翻译： 一种使用多个查找表的数字信号编码方法和装置。 该方法包括：根据预定数量的地址中的输入信号的特性，准备多个查找表，该查找表存储用于编码输入信号频带的分配位数; 将时域中的输入信号划分成预定频带中的信号; 计算频带的地址值; 根据输入信号的特性选择多个查找表之一; 从所选择的查找表中提取相对于频带的具有所计算的地址值的地址的分配比特数，并将比特数分配给频带; 以及通过根据所分配的比特数来量化输入信号来生成比特流。 可以通过从根据输入信号的特性选择的最佳查找表中提取频带的分配比特数来执行适合于输入信号特性的比特量控制。 而且，通过使用等于查找表的每个地址的每个频带的每个占用率作为输入信号的特性，可以减少额外的计算时间。

公开(公告)号：US20050192799A1

公开(公告)日：2005-09-01

申请号：US11066431

申请日：2005-02-28

申请人： Junghoe Kim ,  Miao Lei ,  Shihwa Lee ,  Sangwook Kim ,  Ennmi Oh ,  Dohyung Kim

发明人： Junghoe Kim ,  Miao Lei ,  Shihwa Lee ,  Sangwook Kim ,  Ennmi Oh ,  Dohyung Kim

IPC分类号： G10L19/02 ,  G10L19/00 ,  H04N5/60

CPC分类号： G10L19/0017

摘要： A lossless audio encoding/decoding method, medium, and apparatus. The lossless audio encoding method includes converting an audio signal in a time domain into an audio spectral signal with an integer in a frequency domain, mapping the audio spectral signal in the frequency domain to a bit plane signal according to its frequency, and losslessly encoding binary samples of bit planes using a probability model determined according to a predetermined context. The lossless audio decoding method includes extracting a predetermined lossy bitstream and an error bitstream from error data by demultiplexing an audio bitstream, the error data corresponding to a difference between lossy encoded audio data and an audio spectral signal with an integer in a frequency domain, lossy decoding the extracted encoded lossy bitstream, losslessly decoding the extracted error bitstream, and restoring the original audio frequency spectral signal using the decoded lossy bitstream and error bitstream

摘要翻译： 无损音频编码/解码方法，介质和装置。 无损音频编码方法包括将时域中的音频信号转换为频域中的整数的音频频谱信号，根据频率将频域中的音频频谱信号映射到比特平面信号，并将无损编码二进制 使用根据预定上下文确定的概率模型的位平面样本。 无损音频解码方法包括通过解复用音频比特流从误差数据中提取预定的有损比特流和错误比特流，对应于有损编码的音频数据与频域中的整数的音频频谱信号之间的差异的误差数据， 对所提取的编码有损比特流进行解码，对所提取的错误比特流进行无损解码，以及使用解码的有损比特流和误码比特流恢复原始音频频谱信号

公开(公告)号：US08149927B2

公开(公告)日：2012-04-03

申请号：US12792048

申请日：2010-06-02

申请人： Junghoe Kim ,  Dohyung Kim ,  Shihwa Lee ,  Sangwook Kim

发明人： Junghoe Kim ,  Dohyung Kim ,  Shihwa Lee ,  Sangwook Kim

IPC分类号： H04B14/04

CPC分类号： G10L19/032

摘要： A method of encoding/decoding a digital signal using linear quantization by sections, and an apparatus for the same are provided. The method of encoding includes: converting a digital input signal, and removing redundant information from the digital signal; allocating a number of bits allocated to each predetermined quantized unit considering the importance of the digital signal; dividing the distribution of signal values into predetermined sections based on the predetermined quantized units, and linear quantizing data converted pin the operation of converting the digital input signal by sections; and generating a bit stream from the linear quantized data and predetermined side information. Therefore, a sound quality is improved compared to a sound quality produced by conventional linear quantizing devices and a complexity of a non-linear quantizing device is reduced.

摘要翻译： 提供了使用线性量化部分对数字信号进行编码/解码的方法及其装置。 编码方法包括：转换数字输入信号，从数字信号中去除冗余信息; 考虑数字信号的重要性，分配分配给每个预定量化单元的位数; 基于预定的量化单位将信号值的分布划分为预定部分，以及在通过部分转换数字输入信号的操作中转换的线性量化数据; 以及从所述线性量化数据和预定侧信息生成比特流。 因此，与传统线性量化装置产生的声音质量相比，提高了音质，并且减少了非线性量化装置的复杂性。

公开(公告)号：US07974840B2

公开(公告)日：2011-07-05

申请号：US10996062

申请日：2004-11-24

申请人： Junghoe Kim ,  Shihwa Lee ,  Sangwook Kim ,  Eunmi Oh ,  Dohyung Kim

发明人： Junghoe Kim ,  Shihwa Lee ,  Sangwook Kim ,  Eunmi Oh ,  Dohyung Kim

IPC分类号： G10L11/00 ,  G10L15/00 ,  G10L19/00 ,  G10L21/00 ,  G10L21/02 ,  G10L19/02

CPC分类号： G10H1/0058 ,  G10L19/24

摘要： A method of and an apparatus for encoding/decoding an MPEG-4 bit sliced arithmetic coding (BSAC) audio bitstream having ancillary information. A time domain audio signal is converted to a frequency domain audio signal and quantized. A number of data bits is counted and a number of available bits per layer is obtained. The number of available bits per layer is modified considering the size of ancillary information. Actual audio data is encoded in units of layers and ancillary information is embedded in the encoded bitstream. A header is decoded and a layer structure of an audio bitstream is calculated to determine the size of the ancillary information as a difference between a size of data up to a top layer and a size of a frame. The ancillary information is extracted to improve meta data and sound quality of audio contents.

摘要翻译： 一种用于对具有辅助信息的MPEG-4位分片算术编码（BSAC）音频比特流进行编码/解码的方法和装置。 将时域音频信号转换为频域音频信号并量化。 对多个数据位进行计数，并获得每层可用位数。 考虑到辅助信息的大小，每层可用位数被修改。 实际音频数据以层为单位进行编码，辅助信息嵌入编码比特流中。 解码头部，并且计算音频比特流的层结构以将辅助信息的大小确定为直到顶层的数据的大小与帧的大小之间的差。 提取辅助信息以改善音频内容的元数据和音质。