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1. 发明申请

US20100061432A1 REDUCED COST SAW-LESS CATV RF TUNER CIRCUIT FOR USE IN A CABLE MODEM 审中-公开
标题翻译：降低成本的无线CATV射频调谐器电路用于电缆调制解调器
公开(公告)号：US20100061432A1
公开(公告)日：2010-03-11
申请号：US12208457
申请日：2008-09-11
申请人： Oren Ben-Hamo , Boris Froimovich , Moshe Meir , Ronen Ezra
发明人： Oren Ben-Hamo , Boris Froimovich , Moshe Meir , Ronen Ezra
IPC分类号： H04B1/38 , H04B3/00
CPC分类号： H04N5/455 , H04N21/6118 , H04N21/6168
摘要： A novel reduced cost CATV RF tuner circuit that can serve as a replacement circuit for one based on a surface acoustic wave (SAW) filter. The tuner circuit is particularly suitable for use in cable modem systems adapted to implement the DOCSIS 2.0 specification which specifies single channel video reception. The invention replaces the traditional SAW filter functions of image rejection and channel selection with both analog and digital components and circuits. The image rejection function is performed by a combination of analog multiple filters. Digital filtering is then used to perform the channel selection operation. The analog based image reject filter can be constructed using relatively inexpensive passive components, while the digital channel selection filter can be implemented in software, firmware, gate array (FPGA) or ASIC.
摘要翻译：一种新颖的降低成本的CATV RF调谐器电路，其可以用作基于表面声波（SAW）滤波器的替代电路。调谐器电路特别适用于适用于实现指定单通道视频接收的DOCSIS 2.0规范的电缆调制解调器系统。本发明用模拟和数字组件和电路替代了传统的图像抑制和信道选择功能。图像抑制功能通过模拟多重滤波器的组合来执行。然后使用数字滤波来执行频道选择操作。可以使用相对便宜的无源元件构建基于模拟的图像抑制滤波器，而数字信道选择滤波器可以在软件，固件，门阵列（FPGA）或ASIC中实现。

2. 发明申请

US20090133083A1 PASSIVE CIRCUIT FOR IMPROVED DIFFERENTIAL AMPLIFIER COMMON MODE REJECTION 审中-公开
标题翻译：用于改进的差分放大器通用模式拒绝的被动电路
公开(公告)号：US20090133083A1
公开(公告)日：2009-05-21
申请号：US11943665
申请日：2007-11-21
申请人： Shaul Klein , Oren Ben-Hamo , Moshe Meir , Ronen Ezra
发明人： Shaul Klein , Oren Ben-Hamo , Moshe Meir , Ronen Ezra
IPC分类号： H04N7/173
CPC分类号： H03F3/45085 , H03F3/45618 , H03F2200/09 , H03F2203/45638 , H03F2203/45702 , H03F2203/45731
摘要： A novel passive circuit for providing improved common mode rejection of a differential amplifier novel. The passive circuit functions to compensate for amplitude mismatches between the two outputs of a differential amplifier. To compensate for the amplitude mismatch between the output traces of the amplifier, a resistor is inserted in series with at either one or both of the differential outputs. The values of the resistors are set such that the mismatch is substantially eliminated. Inductors are connected in parallel with the resistors to create a zero ohm path for power. At high frequencies the inductor impedance is sufficiently high that the series resistor compensates for the imbalance caused by spurious products. The imbalance in the amplifier outputs is corrected with the resulting increase in the rejection of spurious frequency products by exploiting the differential common mode rejection (CMR) effect of the differential amplifier.
摘要翻译：一种用于提供差分放大器新颖的改进的共模抑制的新型无源电路。无源电路用于补偿差分放大器的两个输出之间的幅度失配。为了补偿放大器的输出迹线之间的幅度失配，电阻器与差分输出中的一个或两个串联插入。设置电阻器的值使得基本上消除了失配。电感器与电阻并联连接，以产生用于功率的零欧姆路径。在高频下，电感阻抗足够高，串联电阻补偿由虚假产物引起的不平衡。通过利用差分放大器的差分共模抑制（CMR）效应，放大器输出的不平衡被校正，从而导致杂散频率产物的抑制的增加。

3. 发明申请

US20120213260A1 Discrete Spurious Leakage Cancellation for Use in a Cable Modem 审中-公开
标题翻译：用于电缆调制解调器的离散杂散泄漏取消
公开(公告)号：US20120213260A1
公开(公告)日：2012-08-23
申请号：US13439163
申请日：2012-04-04
申请人： Boris Froimovich , Oren Ben-Hamo , Shaul Klein
发明人： Boris Froimovich , Oren Ben-Hamo , Shaul Klein
IPC分类号： H04B1/38
CPC分类号： H04N21/6118 , H04B15/02 , H04N21/6168
摘要： In a novel apparatus for and method of discrete spurious frequency leakage cancellation a radio frequency RF switch is used to couple the upstream path signal to the CATV cable only during transmission bursts. In between transmission bursts, the upstream signal is disconnected from the CATV cable. In a circuit for canceling frequency spurs from a victim signal, a radio frequency (RF) switch is operative to connect and disconnect the victim signal to/from the output in accordance with a switch control signal which is generated by a switch control module. The victim signal is coupled to said RF switch output during transmission bursts only.
摘要翻译：在离散寄生频率泄漏消除的新型装置和方法中，射频RF开关仅用于在传输脉冲串期间将上游路径信号耦合到CATV电缆。在传输突发之间，上行信号与CATV电缆断开连接。在用于从受害者信号中消除频率杂波的电路中，射频（RF）开关用于根据由开关控制模块产生的开关控制信号将受害信号连接到输出端并将其断开。受害信号仅在传输突发期间耦合到所述RF开关输出。

4. 发明申请

US20100266000A1 DISCRETE SPURIOUS LEAKAGE CANCELLATION FOR USE IN A CABLE MODEM 审中-公开
标题翻译：在电缆调制解调器中使用的离散泄漏泄漏
公开(公告)号：US20100266000A1
公开(公告)日：2010-10-21
申请号：US12426424
申请日：2009-04-20
申请人： Boris Froimovich , Oren Ben-Hamo , Shaul Klein
发明人： Boris Froimovich , Oren Ben-Hamo , Shaul Klein
IPC分类号： H04B1/38 , H04N7/173
CPC分类号： H04N21/6118 , H04B15/02 , H04N21/6168
摘要： A novel apparatus for and method of discrete spurious frequency leakage cancellation for use in a cable modem. The spurious leakage cancellation mechanism is particularly suitable for use in cable modem systems adapted to implement the DOCSIS 2.0 specification which specifies both downstream and upstream channels. In one embodiment, the spurious emission cancellation mechanism cancels the spurious emissions by first creating a replica of the aggressor clock signal having the same amplitude but 180 degree phase shift as the spurious signal. The phase shifted spurious replica is added to the original spurious signal thus cancelling the spurious signal. In another embodiment, an RF switch is used to couple the upstream path signal to the CATV cable only during transmission bursts. In between transmission bursts, the upstream signal is disconnected from the CATV cable. This embodiment takes advantage of the less stringent spurious requirements in the DOCSIS 2.0 specification for transmission bursts. In between transmission bursts, when stricter spurious requirements apply, the upstream signal is disconnected from the CATV cable.
摘要翻译：用于电缆调制解调器的离散寄生频率泄漏消除的新颖设备和方法。伪泄漏消除机制特别适用于适用于实现指定下游和上行信道的DOCSIS 2.0规范的电缆调制解调器系统。在一个实施例中，杂散发射消除机制通过首先产生具有与伪信号相同幅度但是180度相移的侵略时钟信号的副本来抵消杂散发射。相移的伪复制被添加到原始寄生信号，从而消除杂散信号。在另一个实施例中，RF开关用于仅在传输脉冲串期间将上游路径信号耦合到CATV电缆。在传输突发之间，上行信号与CATV电缆断开连接。该实施例利用DOCSIS 2.0规范中对于传输脉冲串的不太严格的虚假要求。在传输突发之间，当更严格的杂散要求适用时，上行信号与CATV电缆断开连接。

5. 发明授权

US07957296B2 Apparatus for and method of detecting loss of signal in a radio frequency cable 有权
标题翻译：检测射频电缆信号损失的装置及方法
公开(公告)号：US07957296B2
公开(公告)日：2011-06-07
申请号：US11619115
申请日：2007-01-02
申请人： Oren Ben-Hamo
发明人： Oren Ben-Hamo
IPC分类号： G01R31/08
CPC分类号： H04M3/12
摘要： A novel apparatus and method of detecting loss of signal events in RF cable. The loss of signal may be caused malicious cable cuts, inadvertent disconnects, loss of signal from the cable head-end or for any other reason. The invention is particular applicable to use in cable modems which provide cable service, Internet service and telephone service to subscriber premises including both homes and businesses. All RF channels are scanned and the signal power of each is measured and compared to a threshold. If the signal power on all channels is below the threshold, then it is concluded that a “cable signal loss” event has occurred. The telephone line originating in the cable modem is shut down which causes the alarm system connected thereto to generate an alert.
摘要翻译：一种检测射频电缆信号事件丢失的新颖设备和方法。信号丢失可能导致恶意电缆断线，无意中断，电缆头端信号丢失或出于任何其他原因。本发明特别适用于向包括家庭和企业在内的用户住宅提供有线服务，互联网服务和电话服务的电缆调制解调器中的应用。扫描所有射频通道，并测量每个射频通道的信号功率并将其与阈值进行比较。如果所有通道上的信号功率低于阈值，则可以断定发生了“电缆信号丢失”事件。源于电缆调制解调器的电话线路被关闭，导致与其连接的警报系统产生警报。

6. 发明申请

US20080160973A1 APPARATUS FOR AND METHOD OF DETECTING LOSS OF SIGNAL IN A RADIO FREQUENCY CABLE 有权
标题翻译：检测无线电频率信号损失的装置及方法
公开(公告)号：US20080160973A1
公开(公告)日：2008-07-03
申请号：US11619115
申请日：2007-01-02
申请人： Oren Ben-Hamo
发明人： Oren Ben-Hamo
IPC分类号： H04M3/42
CPC分类号： H04M3/12
摘要： A novel apparatus and method of detecting loss of signal events in RF cable. The loss of signal may be caused malicious cable cuts, inadvertent disconnects, loss of signal from the cable head-end or for any other reason. The invention is particular applicable to use in cable modems which provide cable service, Internet service and telephone service to subscriber premises including both homes and businesses. All RF channels are scanned and the signal power of each is measured and compared to a threshold. If the signal power on all channels is below the threshold, then it is concluded that a “cable signal loss” event has occurred. The telephone line originating in the cable modem is shut down which causes the alarm system connected thereto to generate an alert.
摘要翻译：一种检测射频电缆信号事件丢失的新颖设备和方法。信号丢失可能导致恶意电缆断线，无意中断，电缆头端信号丢失或出于任何其他原因。本发明特别适用于向包括家庭和企业在内的用户住宅提供有线服务，互联网服务和电话服务的电缆调制解调器中的应用。扫描所有射频通道，并测量每个射频通道的信号功率并将其与阈值进行比较。如果所有通道上的信号功率低于阈值，则可以断定发生了“电缆信号丢失”事件。源于电缆调制解调器的电话线路被关闭，导致与其连接的警报系统产生警报。

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