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    • 1. 发明授权
    • Timing recovery scheme for a discrete multitone transmission system
    • 离散多音频传输系统的定时恢复方案
    • US06442173B1
    • 2002-08-27
    • US09286995
    • 1999-04-07
    • Maged F. BarsoumChien-Meen HwangEugen GershonFred BerkowitzMuoi V. Huynh
    • Maged F. BarsoumChien-Meen HwangEugen GershonFred BerkowitzMuoi V. Huynh
    • H04J324
    • H04L5/023H04L27/2607H04L27/2613
    • A random access data network in accord with the invention will utilize discrete multi-tone (DMT) transmission over a link within a home or other premises, such as over existing in-house telephone wiring. Discrete multi-tone communication in a random access implementation raises a number of timing issues. To address these issues, all packet transmissions through the network will begin with one or more cycles of a defined periodic signal, typically a sinusoid at a specified frequency. All timing of decoding of subsequent signals, such as ID signals and DMT symbols, is based on counting signal sampling intervals following the detected timing mark. The preferred embodiment utilizes differential modulation of the tones within the DMT symbol. Each packet may include a reference symbol to enable demodulation of the first DMT data symbol. Also, the preferred embodiment of the DMT symbol includes a prefix code followed by the actual DMT waveform carrying the modulated information. The prefix code corresponds to a fixed number of samples of time-domain data, such as a copy of the last thirty-two samples used to generate the actual DMT waveform.
    • 根据本发明的随机接入数据网络将利用家庭或其他场所内的链路上的离散多音(DMT)传输,例如通过现有的内部电话线路。 随机访问实现中的离散多音通信引发了许多定时问题。 为了解决这些问题,通过网络的所有分组传输将以定义的周期信号的一个或多个周期开始,通常是指定频率的正弦波。 后续信号(例如ID信号和DMT符号)的所有解码定时都是基于检测到的定时标记之后的计数信号采样间隔。 优选实施例利用DMT符号内的音调的差分调制。 每个分组可以包括用于使得能够解调第一DMT数据符号的参考符号。 此外,DMT符号的优选实施例包括一个前缀码,后面是携带调制信息的实际DMT波形。 前缀码对应于固定数量的时域数据采样,例如用于生成实际DMT波形的最后三十二个采样的副本。
    • 2. 发明授权
    • Collision handling scheme for discrete multi-tone data communications network
    • 离散多音频数据通信网络的碰撞处理方案
    • US06339599B1
    • 2002-01-15
    • US09286987
    • 1999-04-07
    • Chien-Meen HwangHungming ChangMaged F. BarsoumMuoi V. HuynhEugen GershonFred Berkowitz
    • Chien-Meen HwangHungming ChangMaged F. BarsoumMuoi V. HuynhEugen GershonFred Berkowitz
    • H04J324
    • H04L27/2626H04L27/2071H04L27/2647H04M11/062
    • A novel collision detecting method at the physical layer is provided for use in a multi-point DMT communication system. A time mark transmitted at the beginning of a portion of a random access data communication is followed by an ID signal for identifying the communication station. The ID signal produced based on the time mark may be transmitted between the time mark and a data portion of the random access data communication. The time mark distorted by a communication channel is received by a receiver of the station that transmitted it. An additional ID signal representing the same ID data as the ID signal is produced based on the received time mark. The additional ID signal is compared with the ID signal received from the communication channel. A collision event is detected if the incoming ID signal does not match the additional ID signal. In response to the detection of the collision event, the transmission of the data portion is terminated.
    • 提供了一种用于物理层的新型碰撞检测方法,用于多点DMT通信系统。 在随机访问数据通信的一部分的开始处发送的时间标记之后是用于识别通信站的ID信号。 可以在时间标记与随机访问数据通信的数据部分之间发送基于时间标记产生的ID信号。 由通信信道失真的时间标记由发送它的站的接收机接收。 基于接收到的时间标记产生表示与ID信号相同的ID数据的附加ID信号。 将附加ID信号与从通信信道接收的ID信号进行比较。 如果进入的ID信号与附加的ID信号不匹配,则检测到碰撞事件。 响应于碰撞事件的检测,数据部分的传输被终止。
    • 3. 发明授权
    • Differential encoding arrangement for a discrete multi-tone transmission system
    • 用于离散多音调传输系统的差分编码装置
    • US06434188B1
    • 2002-08-13
    • US09286989
    • 1999-04-07
    • Chien-Meen HwangHungming ChangMaged F. BarsoumMuoi V. HuynhEugen GershonFred BerkowitzBin Guo
    • Chien-Meen HwangHungming ChangMaged F. BarsoumMuoi V. HuynhEugen GershonFred BerkowitzBin Guo
    • H04B138
    • H04L27/2602
    • A random-access local network having multiple nodes provides data communication across residential wiring such as telephone line as a network medium, where each node accesses the network medium using discrete multi-tone (DMT) modulated symbols. The effects of amplitude and phase distortion of transmitted DMT symbols are overcome, without the necessity of complex equalizers, by differentially encoding data prior to transmission, and recovering the transmitted data by comparing phase differentials between consecutive symbol tones. Each transmitted symbol is composed of a plurality of tone signals, each tone signal modulated according to a constellation point in a complex domain. A transmitter modulates data, such as a bit-pair, to a new constellation point based on the value of the bit-pair and a prior position of a consecutively-preceding constellation point, such that the data is represented by the difference in positions between the consecutively-preceding constellation point and the new constellation point. The constellation points are then used to modulate a selected one of the tone signals. Although a receiver detecting the modulated tone signal may recover the transmitted constellation points at different absolute positions due to distortion on he network medium, the relative difference between the consecutively-preceding constellation point and the new constellation point is preserved, enabling the receiver to recover the transmitted data based on the relative difference in positions of the consecutive constellation points. Hence, entire bit stream can reliably transmitted using position changes between consecutive constellation points.
    • 具有多个节点的随机接入本地网络提供诸如作为网络媒体的电话线等住宅布线之间的数据通信,其中每个节点使用离散多音(DMT)调制符号来访问网络介质。 通过在传输之前对数据进行差分编码,并且通过比较连续符号音之间的相位差来恢复发送的数据,克服了传输的DMT符号的幅度和相位失真的影响,而不需要复数均衡器。 每个发送的符号由多个音调信号组成,每个音调信号根据复杂域中的星座点进行调制。 发射机基于比特对的值和连续前面的星座点的先前位置,将诸如比特对的数据调制到新的星座点,使得数据由 连续前面的星座点和新的星座点。 然后使用星座点来调制所选择的一个音调信号。 虽然检测调制音信号的接收机可以由于网络介质上的失真而恢复在不同绝对位置处的发射星座点,但保持连续前面的星座点与新星座点之间的相对差异,使得接收机能够恢复 基于连续星座点的位置的相对差异发送数据。 因此,使用连续星座点之间的位置变化可以可靠地发送整个比特流。
    • 6. 发明授权
    • Method and circuitry to recover energy from discharge signals of a charging operation of a battery/cell
    • 从电池/电池的充电操作的放电信号中回收能量的方法和电路
    • US08901886B2
    • 2014-12-02
    • US13171612
    • 2011-06-29
    • Fred BerkowitzNadim MalufDania Ghantous
    • Fred BerkowitzNadim MalufDania Ghantous
    • H02J7/00
    • H02J7/0042H02J7/0052H02J7/0073H02J7/0093
    • The present inventions, in certain aspects, are directed to techniques and/or circuitry to charge a battery the method comprises (i) charging the battery via a charging sequence, wherein charging the battery includes: (a) applying a plurality of charge signals, and (b) applying one or more discharge signals wherein, in response thereto, the battery outputs electrical energy. In certain embodiments, the electrical energy output by the battery in response to the discharge signals is stored (for example, in a capacitor and/or second battery). The present inventions are also directed to, among other things, an apparatus to charge a battery comprising charging circuitry including: (i) a current source to generate a plurality of charge signals, and (ii) a current sink to generate one or more discharge signals, wherein, in response thereto, the battery outputs electrical energy. The apparatus may also include control circuitry, a storage device (for example, in a capacitor and/or second battery), to store the energy output by the battery in response to the one or more discharge signals, and/or an ambient environmental device to adjust the ambient environment or conditions of the battery using the energy output by the battery in response to the one or more discharge signals.
    • 本发明在某些方面涉及对电池充电的技术和/或电路,该方法包括(i)经由充电顺序对电池充电,其中对电池充电包括:(a)施加多个充电信号, 和(b)施加一个或多个放电信号,其中响应于此,电池输出电能。 在某些实施例中,电池响应于放电信号输出的电能被存储(例如,在电容器和/或第二电池中)。 本发明还涉及一种用于为包括充电电路的电池充电的装置,包括:(i)产生多个充电信号的电流源,以及(ii)电流吸收器以产生一个或多个放电 信号,其中响应于此,电池输出电能。 该装置还可以包括控制电路,存储装置(例如,在电容器和/或第二电池中),以响应于一个或多个放电信号来存储由电池输出的能量和/或环境环境装置 使用电池响应于一个或多个放电信号输出的能量来调节电池的周围环境或条件。
    • 9. 发明授权
    • Method and circuitry to adaptively charge a battery/cell
    • 为电池/电池自适应充电的方法和电路
    • US08638070B2
    • 2014-01-28
    • US13111902
    • 2011-05-19
    • Nadim MalufDania GhantousFred Berkowitz
    • Nadim MalufDania GhantousFred Berkowitz
    • H01M10/44H01M10/46
    • H02J7/007G01R31/36H02J7/0052H02J7/0086Y02T10/7011
    • The present inventions, in one aspect, are directed to techniques and/or circuitry to adaptively charge a battery/cell using data which is representative of a change in terminal voltage of the battery/cell. In another aspect, the present inventions are directed to techniques and/or circuitry to adaptively charge a battery/cell using data which is representative of a partial relaxation time of the battery/cell. In yet another aspect the present inventions are directed to techniques and/or circuitry to adaptively charge a battery/cell using data which is representative of an overpotential or full relaxation time of the battery/cell. In another aspect the present inventions are directed to techniques and/or circuitry to adaptively charge a battery/cell using data which is representative of a state of charge of the battery/cell. In another aspect the present inventions are directed to techniques and/or circuitry to adaptively charge a battery/cell using data which is representative of a state of health of the battery/cell.
    • 在一个方面,本发明涉及使用代表电池/电池的端子电压变化的数据自适应地对电池/电池充电的技术和/或电路。 在另一方面,本发明涉及使用代表电池/电池的部分松弛时间的数据自适应地对电池/电池充电的技术和/或电路。 在另一方面,本发明涉及使用代表电池/电池的超电势或完全弛豫时间的数据自适应地对电池/电池充电的技术和/或电路。 在另一方面,本发明涉及使用表示电池/电池的充电状态的数据自适应地对电池/电池充电的技术和/或电路。 在另一方面,本发明涉及使用代表电池/电池的健康状态的数据自适应地对电池/电池充电的技术和/或电路。