公开(公告)号：US20120002574A1

公开(公告)日：2012-01-05

申请号：US13230555

申请日：2011-09-12

申请人： Chong U. Lee ,  Alejandro R. Holcman ,  Jeremy M. Stein ,  Ramin Rezaiifar ,  Babak Aryan

发明人： Chong U. Lee ,  Alejandro R. Holcman ,  Jeremy M. Stein ,  Ramin Rezaiifar ,  Babak Aryan

IPC分类号： H04W52/02 ,  H04W4/00

CPC分类号： H04W56/0015 ,  H04B7/24 ,  H04J3/06 ,  H04W52/028 ,  Y02D70/1222 ,  Y02D70/164 ,  Y02D70/448

摘要： Operating at least one low duty cycle (LDC) controller to maintain synchronization between the LDC controller and a plurality of LDC terminals operating over a communication network using only overhead channels of the network and conforming to the protocol and timing of said network, wherein synchronization between the LDC controller and the plurality of LDC terminals is maintained separately from the protocol and timing of the communication network, and enables the LDC controller to schedule power down and wake up of the plurality of LDC terminals for durations longer than allowable under the protocol and timing of the communication network.

摘要翻译： 操作至少一个低占空比（LDC）控制器，以维持LDC控制器与通过网络运行的多个LDC终端之间的同步，仅使用网络的开销信道并符合所述网络的协议和定时，其中， LDC控制器和多个LDC终端与通信网络的协议和定时分开地保持，并且使LDC控制器能够调度多个LDC终端的停电和唤醒持续时间长于协议和定时下允许的持续时间 的通信网络。

公开(公告)号：US20110222774A1

公开(公告)日：2011-09-15

申请号：US12855502

申请日：2010-08-12

申请人： John Hong ,  Onur C. Hamsici ,  Jose R. dos Santos ,  Joseph J. Huang ,  Chong U. Lee ,  Yuriy Reznik ,  Mark K. Murphy ,  Devender A. Yamakawa

发明人： John Hong ,  Onur C. Hamsici ,  Jose R. dos Santos ,  Joseph J. Huang ,  Chong U. Lee ,  Yuriy Reznik ,  Mark K. Murphy ,  Devender A. Yamakawa

IPC分类号： G06K9/46

CPC分类号： G06K9/4671

摘要： In a particular embodiment, a method includes applying a first feature detector to a portion of an image to detect a first set of features. The first set of features is used to locate a region of interest, and a boundary corresponding to the region of interest is determined. The method also includes displaying the boundary at a display. In response to receiving user input to accept the displayed boundary, a second feature detector is applied to an area of the image encapsulated by the boundary.

摘要翻译： 在特定实施例中，一种方法包括将第一特征检测器应用于图像的一部分以检测第一组特征。 第一组特征用于定位感兴趣区域，并且确定与感兴趣区域相对应的边界。 该方法还包括在显示器上显示边界。 响应于接收用户输入以接受所显示的边界，第二特征检测器被应用于由边界封装的图像的区域。

公开(公告)号：US07675969B2

公开(公告)日：2010-03-09

申请号：US11350525

申请日：2006-02-08

申请人： Donald T. Pian ,  Chong U. Lee

发明人： Donald T. Pian ,  Chong U. Lee

IPC分类号： H04N7/12 ,  H04N11/02 ,  H04N11/04 ,  H04B1/66

CPC分类号： H04N19/152 ,  H04N19/115 ,  H04N19/126 ,  H04N19/146 ,  H04N19/149 ,  H04N19/15 ,  H04N19/176 ,  H04N19/186 ,  H04N19/60 ,  H04N19/61

摘要： A system and method for adaptively controlling the encoded data rate in a data compression system. The system and method sets up alternative encoded bit streams for each segment of data and selects the alternative that would produce the bit rate closest to a predetermined target bit rate for transmission. Each segment of video input is quantized based on a set quantization settings to produce a plurality of quantized segments. Each quantized segment is then variable rate encoded to produce an alternative encoded bit stream. The data rate that would be required to transmit each alternative encoded bit stream is determined and compared with a predetermined target bit rate, which is set according to the transmission rate buffer status. The selected encoded bit stream is provided to the transmission rate buffer in preparation for transmission. Having processed one segment of data, the system and method then updates its parameters for processing the next segment of data. An updated target bit rate is determined based on the rate buffer status at this point. A rate versus quantization index model is derived according to the data rates of the encoded streams and the corresponding quantization indices. A new set of weighting mask functions is then produced in accordance with the model and the quantization indices. The new set of quantization indices is to be used for processing the next segment of data.

摘要翻译： 一种用于在数据压缩系统中自适应地控制编码数据速率的系统和方法。 该系统和方法为每个数据段设置替代的编码比特流，并且选择将产生最接近用于传输的预定目标比特率的比特率的替代方案。 基于设定的量化设置量化每个视频输入段以产生多个量化段。 然后对每个量化段进行可变速率编码以产生替代编码比特流。 确定发送每个备选编码比特流所需的数据速率，并将其与根据传输速率缓冲器状态设置的预定目标比特率进行比较。 所选择的编码比特流被提供给传输速率缓冲器以准备传输。 处理了一段数据后，系统和方法随后更新其参数，以处理下一段数据。 基于此时的速率缓冲器状态来确定更新的目标比特率。 根据编码流的数据速率和相应的量化索引，导出速率对量化索引模型。 然后根据模型和量化指数产生一组新的加权掩码函数。 新的量化索引集合将用于处理下一个数据段。

公开(公告)号：US06792542B1

公开(公告)日：2004-09-14

申请号：US09708810

申请日：2000-11-08

申请人： Chong U. Lee ,  Katherine S. Lam ,  Julien J. Nicolas ,  Edward Atrero

发明人： Chong U. Lee ,  Katherine S. Lam ,  Julien J. Nicolas ,  Edward Atrero

IPC分类号： G06K900

CPC分类号： G11B20/00891 ,  G10L19/018 ,  G11B20/00086 ,  G11B20/00913 ,  H04B1/707

摘要： A system for embedding auxiliary digital information (Di) into an existing primary digitally encoded signal (Xn) to form an unobjectionable composite digital signal (Cn). Auxiliary data bits (Di) modulate a pseudo-random (e.g., PN) sequence (125) to provide an auxiliary data sequence (160) that is used to modify the Least Perceptually Significant Bits (LPSBs) (180) of successive multi-bit samples (120) of the primary signal. In a cross-term compensation embodiment (300, 400, 1000), a correlation (V) between the PN sequence and the sample bits is determined, and compared to the auxiliary data bits (Di) to determine whether there is a desired correspondence. The LPSBs in the samples are toggled (360), if necessary, to provide the desired correspondence. The selection of LPSBs to modify accounts for a desired noise level of the auxiliary data (Di) in the primary signal (Xn). LPSBs may be selected to be modified based on a sparse PN sequence (250) to achieve the desired noise level and to conceal the presence of the auxiliary data (Di). The data to be hidden can be any digital data, while the primary signal is any uncompressed or compressed digitally sampled process, including, for example, audio or video data.

摘要翻译： 一种用于将辅助数字信息（Di）嵌入到现有的主要数字编码信号（Xn）中以形成无效的复合数字信号（Cn）的系统。 辅助数据位（Di）调制伪随机（例如，PN）序列（125）以提供辅助数据序列（160），其用于修改连续多位的最小感知有效位（LPSB）（180B） 样本（120）的主要信号。 在横向补偿实施例（300,400,1000）中，确定PN序列和采样比特之间的相关（V），并与辅助数据比特（Di）进行比较，以确定是否存在期望的对应关系。 如果需要，样品中的LPSB将被切换（360），以提供所需的对应关系。 LPSB的选择以修改在主信号（Xn）中考虑辅助数据（Di）的期望噪声电平。 LPSB可以被选择为基于稀疏PN序列（250）进行修改以实现期望的噪声水平并隐藏辅助数据（Di）的存在。 要隐藏的数据可以是任何数字数据，而主信号是任何未压缩或压缩的数字采样处理，包括例如音频或视频数据。

公开(公告)号：US5940429A

公开(公告)日：1999-08-17

申请号：US805732

申请日：1997-02-25

申请人： S. Katherine Lam ,  Chong U. Lee

发明人： S. Katherine Lam ,  Chong U. Lee

IPC分类号： G10L19/00 ,  H04B1/66 ,  H04B1/707 ,  H04K1/10

CPC分类号： G10L19/018 ,  H04B1/665 ,  H04B1/707

摘要： An auxiliary data signal is transported with a primary data signal by hiding the auxiliary data signal in the form of colored noise. The colored noise has a spectrum that simulates the spectrum of the primary data signal. By adjusting the gain of individual spread spectrum signal carrier(s) and the power of the colored noise, the auxiliary information stream(s) can be rendered at any desired level below or above an interference threshold in the primary data signal. The power of the colored noise is further compensated to account for a cross-correlation between the primary data signal and the auxiliary data signal to enhance the recovery of the auxiliary data at a decoder.

摘要翻译： 通过以彩色噪声的形式隐藏辅助数据信号，用主数据信号传送辅助数据信号。 彩色噪声具有模拟主数据信号频谱的频谱。 通过调整各个扩展频谱信号载波的增益和有色噪声的功率，辅助信息流可以在低于或高于主数据信号中的干扰阈值的任何期望的水平处呈现。 彩色噪声的功率被进一步补偿以解决主数据信号和辅助数据信号之间的互相关，以增强解码器处的辅助数据的恢复。

公开(公告)号：US5687191A

公开(公告)日：1997-11-11

申请号：US607330

申请日：1996-02-26

申请人： Chong U. Lee ,  Kamran Moallemi ,  Jurg Hinderling

发明人： Chong U. Lee ,  Kamran Moallemi ,  Jurg Hinderling

IPC分类号： G10L19/00 ,  H04B1/66 ,  H04B1/707 ,  H04L27/00 ,  H04K1/00 ,  H04L27/28

CPC分类号： G10L19/018 ,  H04B1/665 ,  H04B1/707 ,  H04B2201/70715

摘要： Auxiliary data subband samples representing an auxiliary data signal are transported in a subband-coded compressed digital audio signal without decompressing the data. A pre-existing packetized data stream is provided to an input of a encoder. Subband audio samples are extracted from the packet stream and normalized if required. The data to be transported modulates data carrier subbands including, for example, a pseudo-noise (PN) spread spectrum signal, each subband of which has a bandwidth corresponding to those of the digital audio signal. The data carrier sequence can also include a sparse PN sequence, sample twiddle sequence, or a bit twiddle sequence. The modulated data carrier sequence is combined with the audio subband samples to form a combined signal in which the auxiliary data subband samples are carried. The combined signal is then multiplexed into the pre-existing packet stream. In a decoder, the combined signal is demodulated to recover the auxiliary data signal. The recovered auxiliary data signal is carried substantially inaudibly in the audio signal and is spectrally shaped according to the audio signal to enhance concealment.

摘要翻译： 代表辅助数据信号的辅助数据子带样本在子带编码压缩数字音频信号中被传送而不解压缩数据。 将预先存在的分组数据流提供给编码器的输入。 从分组流中提取子带音频样本，并根据需要进行归一化。 要传送的数据调制数据载波子带，包括例如伪噪声（PN）扩展频谱信号，每个子带的带宽对应于数字音频信号的带宽。 数据载体序列还可以包括稀疏PN序列，样本旋转序列或位旋转序列。 调制的数据载波序列与音频子带样本组合以形成其中携带辅助数据子带样本的组合信号。 然后将组合的信号复用到预先存在的分组流中。 在解码器中，组合信号被解调以恢复辅助数据信号。 所恢复的辅助数据信号基本上无声地传送到音频信号中，并且根据音频信号进行频谱成形以增强隐藏。

公开(公告)号：US5107345A

公开(公告)日：1992-04-21

申请号：US705840

申请日：1991-05-28

申请人： Chong U. Lee

发明人： Chong U. Lee

IPC分类号： G06T9/40 ,  H04N7/26 ,  H04N7/30

CPC分类号： H04N19/00 ,  G06T9/40 ,  H04N19/102 ,  H04N19/129 ,  H04N19/15 ,  H04N19/154 ,  H04N19/176 ,  H04N19/18 ,  H04N19/96 ,  H04N19/98 ,  H04N19/13 ,  H04N19/146 ,  H04N19/60 ,  H04N19/91

摘要： An image compression system and method for compressing image data for transmission. Each block and corresponding sub-blocks of pixel data is subjected to a discrete cosine transform (DCT) operation. Varying levels of sub-blocks of resulting corresponding transform coefficients are selected for construction into a composite transform coefficient block corresponding to each input block of pixel data. The selection of transform coefficient block size for the composite block is determined by a comparison process between transform block and sub-block coding efficiency. The composite block is variable length coded to further reduce bit count in the compressed data.

摘要翻译： 一种用于压缩图像数据进行传输的图像压缩系统和方法。 每个块和对应的像素数据子块经受离散余弦变换（DCT）运算。 选择所得到的相应变换系数的子块的不同级别用于构造成与像素数据的每个输入块相对应的复合变换系数块。 通过变换块和子块编码效率之间的比较处理来确定复合块的变换系数块大小的选择。 复合块是可变长度编码的，以进一步减少压缩数据中的位数。

公开(公告)号：US5021891A

公开(公告)日：1991-06-04

申请号：US487012

申请日：1990-02-27

申请人： Chong U. Lee

发明人： Chong U. Lee

IPC分类号： G06T9/00 ,  G06T9/40 ,  H03M7/30 ,  H03M7/40 ,  H03M7/46 ,  H04N1/41 ,  H04N7/26 ,  H04N7/30

CPC分类号： H04N19/00 ,  G06T9/40 ,  H04N19/119 ,  H04N19/129 ,  H04N19/15 ,  H04N19/154 ,  H04N19/172 ,  H04N19/176 ,  H04N19/18 ,  H04N19/96 ,  H04N19/98 ,  H04N19/13 ,  H04N19/146 ,  H04N19/60 ,  H04N19/91

摘要： An image compression system and method for compressing image data for transmission. Each block and corresponding sub-blocks of pixel data is subjected to a discrete cosine transform (DCT) operation. Varying levels of sub-blocks of resulting corresponding transform coefficients are selected for construction into a composite transform coefficient block corresponding to each input block of pixel data. The selection of transform coefficient block size for the composite block is determined by a comparison process between transform block and sub-block coding efficiency. The composite block is variable length coded to further reduce bit count in the compressed data.

摘要翻译： 一种用于压缩图像数据进行传输的图像压缩系统和方法。 每个块和对应的像素数据子块经受离散余弦变换（DCT）运算。 选择所得到的相应变换系数的子块的不同级别用于构造成与像素数据的每个输入块相对应的复合变换系数块。 通过变换块和子块编码效率之间的比较处理来确定复合块的变换系数块大小的选择。 复合块是可变长度编码的，以进一步减少压缩数据中的位数。

公开(公告)号：US08897572B2

公开(公告)日：2014-11-25

申请号：US12959347

申请日：2010-12-02

申请人： Onur C. Hamsici ,  Yuriy Reznik ,  John Hong ,  Sundeep Vaddadi ,  Chong U. Lee

发明人： Onur C. Hamsici ,  Yuriy Reznik ,  John Hong ,  Sundeep Vaddadi ,  Chong U. Lee

IPC分类号： G06K9/46

CPC分类号： G06K9/4671

摘要： A method for generating a feature descriptor is provided. A set of pre-generated sparse projection vectors is obtained. A scale space for an image is also obtained, where the scale space having a plurality scale levels. A descriptor for a keypoint in the scale space is then generated based on a combination of the sparse projection vectors and sparsely sampled pixel information for a plurality of pixels across the plurality of scale levels.

摘要翻译： 提供了一种生成特征描述符的方法。 获得一组预先生成的稀疏投影向量。 也可以获得图像的标度空间，其中刻度空间具有多个刻度级别。 然后，基于稀疏投影矢量和跨越多个比例级别的多个像素的稀疏采样的像素信息的组合来生成缩放空间中的关键点的描述符。

公开(公告)号：US08797632B2

公开(公告)日：2014-08-05

申请号：US13211136

申请日：2011-08-16

申请人： John H. Hong ,  Chong U. Lee

发明人： John H. Hong ,  Chong U. Lee

IPC分类号： G02B26/00

CPC分类号： G09G3/3466 ,  G02B26/001 ,  G02B26/0841 ,  G09G2300/0426 ,  G09G2310/06 ,  G09G2320/0252 ,  G09G2320/0693

摘要： This disclosure provides systems, methods, and devices for actuating, charging and calibrating the charge on a movable electrode in electromechanical systems (EMS) devices. The electromechanical systems device can include a first electrode, a second electrode spaced apart from the first electrode by a gap, a complementary electrode, at least one electrical contact, and a movable third electrode disposed between the first electrode and the second electrode. In one implementation, a method of calibrating charge on the movable electrode of the EMS device includes electrically connecting a complementary electrode to the first electrode to form a compound electrode and applying a calibration voltage across the compound electrode and the second electrode to produce a uniform electric field in the gap. Under the electric field the third electrode moves towards the first electrode until it connects with the at least one electrical contact. Once in contact with the electrical contact, an electrical charge on the third electrode can be changed and calibrated when the third electrode is in a second position. When a mechanical restorative force on the third electrode exceeds the electric force of the uniform electric field on the third electrode, the third electrode then moves to a third position.

摘要翻译： 本公开提供用于致动，充电和校准机电系统（EMS）装置中的可移动电极上的电荷的系统，方法和装置。 机电系统装置可以包括第一电极，通过间隙与第一电极间隔开的第二电极，互补电极，至少一个电触点和设置在第一电极和第二电极之间的可动第三电极。 在一个实施方式中，一种校准EMS装置的可移动电极上的电荷的方法包括将互补电极与第一电极电连接以形成复合电极，并且在复合电极和第二电极之间施加校准电压以产生均匀的电 领域的差距。 在电场下，第三电极朝向第一电极移动，直到其与至少一个电触头相连。 一旦与电触点接触，当第三电极处于第二位置时，可以改变和校准第三电极上的电荷。 当第三电极上的机械修复力超过第三电极上的均匀电场的电力时，第三电极移动到第三位置。