SYSTEMS, DEVICES, AND METHODS FOR DRIVING AN ANALOG INTERFEROMETRIC MODULATOR
    92.
    发明申请
    SYSTEMS, DEVICES, AND METHODS FOR DRIVING AN ANALOG INTERFEROMETRIC MODULATOR 审中-公开
    用于驱动模拟干涉仪调制器的系统,设备和方法

    公开(公告)号:US20130135324A1

    公开(公告)日:2013-05-30

    申请号:US13306802

    申请日:2011-11-29

    IPC分类号: G06F15/16 G02B26/00

    摘要: This disclosure provides systems, methods, and apparatus for calibrating and controlling the actuation of an analog interferometric modulator. In one aspect, an electrode of a movable layer of the analog interferometric modulator may include a part for receiving a drive voltage, and an electrically isolated part. A voltage may be sensed from the electrically isolated part, and used to determine the position of the movable layer and/or provide feedback to the drive voltage.

    摘要翻译: 本公开提供了用于校准和控制模拟干涉式调制器的致动的系统,方法和装置。 在一个方面,模拟干涉式调制器的可移动层的电极可以包括用于接收驱动电压的部分和电隔离部分。 可以从电隔离部分检测电压,并用于确定可移动层的位置和/或向驱动电压提供反馈。

    Performing enhanced sigma-delta modulation
    93.
    发明授权
    Performing enhanced sigma-delta modulation 有权
    执行增强的Σ-Δ调制

    公开(公告)号:US08325073B2

    公开(公告)日:2012-12-04

    申请号:US12957149

    申请日:2010-11-30

    IPC分类号: H03M3/00

    CPC分类号: H03M3/492 H03M3/422 H03M3/456

    摘要: In general, techniques are described for performing enhanced sigma-delta modulation. For example, an apparatus comprising a predictive filter unit, an amplifier, an oversampling unit and a sigma-delta modulation unit may implement the techniques. The predictive filter unit performs predictive filtering on an input signal to generate a filtered signal and computes an estimate of a predictive gain as a function of an energy of the input signal and an energy of the filtered signal. The amplifier receives the filtered signal and amplifies the filtered signal based on the predictive gain to generate an amplified signal. The oversampling unit receives the amplifies signal and performs oversampling in accordance with an oversampling rate to generate an oversampled signal. The sigma-delta modulation unit receives the oversampled signal and performs sigma-delta modulation to generate a modulated signal.

    摘要翻译: 通常,描述了用于执行增强的Σ-Δ调制的技术。 例如,包括预测滤波器单元,放大器,过采样单元和Σ-Δ调制单元的装置可以实现这些技术。 预测滤波器单元对输入信号执行预测滤波以产生经滤波的信号,并且计算作为输入信号的能量和滤波信号的能量的函数的预测增益的估计。 放大器接收经过滤波的信号,并根据预测增益对滤波信号进行放大,以产生放大信号。 过采样单元接收放大信号,并根据过采样率进行过采样以产生过采样信号。 Σ-Δ调制单元接收过采样信号并执行Σ-Δ调制以产生调制信号。

    ACTUATION AND CALIBRATION OF CHARGE NEUTRAL ELECTRODE
    94.
    发明申请
    ACTUATION AND CALIBRATION OF CHARGE NEUTRAL ELECTRODE 审中-公开
    电荷中性电极的启动和校准

    公开(公告)号:US20120044562A1

    公开(公告)日:2012-02-23

    申请号:US13211165

    申请日:2011-08-16

    IPC分类号: G02B26/00

    摘要: This disclosure provides systems, methods, and devices for actuating, charging and calibrating the charge on a movable electrode in electronic devices. The electronic device can include a first electrode, a second electrode spaced apart from the first electrode by a gap, at least one electrical contact, and an electrically neutral movable third electrode disposed between the first electrode and the second electrode. The third electrode can be charged by applying a charging actuation voltage across the first electrode and the second electrode to produce an electric field in the gap. Under the electric field, the electrically neutral third electrode can move towards the first electrode from a first position to a second position where it connects with the electrical contact. Once in contact with the electrical contact, an electric charge on the third electrode can be changed when the third electrode is in the second position. When a mechanical restorative force on the third electrode exceeds the force of the electric field on the third electrode, the third electrode moves to a third position.

    摘要翻译: 本公开提供用于致动,充电和校准电子设备中可移动电极上的电荷的系统,方法和装置。 电子设备可以包括第一电极,通过间隙与第一电极隔开的第二电极,至少一个电接触以及设置在第一电极和第二电极之间的电中性可动第三电极。 可以通过在第一电极和第二电极两端施加充电致动电压来产生第三电极,以在间隙中产生电场。 在电场下,电中性的第三电极可以从第一位置移动到第一电极到第二位置,在第二位置与电接触连接。 一旦与电接触接触,当第三电极处于第二位置时,可以改变第三电极上的电荷。 当第三电极上的机械修复力超过第三电极上的电场的力时,第三电极移动到第三位置。

    LOW DUTY CYCLE NETWORK CONTROLLER
    95.
    发明申请
    LOW DUTY CYCLE NETWORK CONTROLLER 有权
    低占空比网络控制器

    公开(公告)号:US20120002574A1

    公开(公告)日:2012-01-05

    申请号:US13230555

    申请日:2011-09-12

    IPC分类号: H04W52/02 H04W4/00

    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。

    Adaptive rate control for digital video compression
    97.
    发明授权
    Adaptive rate control for digital video compression 失效
    数字视频压缩的自适应速率控制

    公开(公告)号:US07675969B2

    公开(公告)日:2010-03-09

    申请号:US11350525

    申请日:2006-02-08

    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。

    Digital system for embedding a pseudo-randomly modulated auxiliary data sequence in digital samples
    98.
    发明授权
    Digital system for embedding a pseudo-randomly modulated auxiliary data sequence in digital samples 失效
    用于在数字样本中嵌入伪随机调制的辅助数据序列的数字系统

    公开(公告)号:US06792542B1

    公开(公告)日:2004-09-14

    申请号:US09708810

    申请日:2000-11-08

    IPC分类号: G06K900

    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。

    Cross-term compensation power adjustment of embedded auxiliary data in a
primary data signal
    99.
    发明授权
    Cross-term compensation power adjustment of embedded auxiliary data in a primary data signal 失效
    主要数据信号中嵌入式辅助数据的跨期补偿功率调整

    公开(公告)号:US5940429A

    公开(公告)日:1999-08-17

    申请号:US805732

    申请日:1997-02-25

    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。

    Adaptive block size image compression method and system
    100.
    发明授权
    Adaptive block size image compression method and system 失效
    自适应块大小图像压缩方法和系统

    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

    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。