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    • 4. 发明授权
    • Multiple configuration communication apparatus
    • 多配置通信装置
    • US07724702B2
    • 2010-05-25
    • US11303492
    • 2005-12-16
    • Shmuel SilvermanMark J. JohnsonAdam C. LewisRon Rotstein
    • Shmuel SilvermanMark J. JohnsonAdam C. LewisRon Rotstein
    • H04W4/00
    • H04W88/06
    • Multiple-configuration communication apparatus includes: a communication device (130) simultaneously maintaining at least a first and a second channel; a storage device (114, 116, 118) storing a plurality of communication configurations; and a configuration controller (120) determining a first time frame and during the first time frame, selecting a first communication configuration of the plurality of communication configurations and controlling the communication device to configure itself to the first communication configuration to at least one of transmit and receive information over the first channel, and determining a second time frame that is different from the first time frame and during the second time frame, selecting a second communication configuration of the plurality of communication configurations, and controlling the communication device to configure itself to the second communication configuration to at least one of transmit and receive information over the second channel.
    • 多配置通信装置包括:通信设备(130)同时保持至少第一和第二信道; 存储多个通信配置的存储设备(114,116,118); 以及配置控制器(120),其确定第一时间帧,并且在所述第一时间帧期间,选择所述多个通信配置的第一通信配置,并且控制所述通信设备将其自身配置为所述第一通信配置为发送和 通过第一信道接收信息,并且确定与第一时间帧不同的第二时间帧,并且在第二时间帧期间,选择多个通信配置的第二通信配置,并且控制通信设备将其自身配置为 第二通信配置到第二信道上的发送和接收信息中的至少一个。
    • 5. 发明授权
    • Video surveillance camera
    • 视频监控摄像机
    • US07362372B2
    • 2008-04-22
    • US10942753
    • 2004-09-16
    • Thomas LyonAlex PokrovskyErik TewsMark J. Johnson
    • Thomas LyonAlex PokrovskyErik TewsMark J. Johnson
    • H04N5/225
    • G08B13/19619H04N5/2252H04N5/2253
    • A video surveillance camera comprising an image sensor, first housing, second housing, electronic circuit, and thermal barrier. The image sensor is located in the first housing, and the electronic circuit is located in the second housing. The thermal barrier has first and second sides with the first side located adjacent to the first housing and the second side located adjacent to the second housing. The image sensor and other electronics, such as the processor board associated with the image sensor or the camera power supply, are located in separate housings or chambers that are separated and insulated from each other by a thermal barrier, thereby minimizing the heat generated by the processor electronics or power supply from being transferred to the area of the image sensor.
    • 一种视频监控摄像机,包括图像传感器,第一壳体,第二壳体,电子电路和热障。 图像传感器位于第一壳体中,并且电子电路位于第二壳体中。 热障具有第一和第二侧,第一侧与第一壳体相邻,第二侧邻近第二壳体。 图像传感器和诸如与图像传感器或摄像机电源相关联的处理器板的其它电子设备位于通过热障隔离并彼此绝缘的分离的壳体或室中,从而最小化由 处理器电子器件或电源被传送到图像传感器的区域。
    • 8. 发明授权
    • Frequency synchronization apparatus
    • 频率同步装置
    • US5128971A
    • 1992-07-07
    • US640677
    • 1991-01-14
    • Mark J. Johnson
    • Mark J. Johnson
    • H04J3/06
    • H04J3/0664
    • An improved method and apparatus for synchronizing a receiver oscillator with a transmitter oscillator is provided. The receiver is arranged with a counter driven by the receiver oscillator; and the transmitter is arranged with a counter driven by the transmitter oscillator. The transmitter sends a start signal to the receiver and simultaneously records the current reading of its counter. Later, the transmitter sends a stop signal to the receiver and simultaneously records the current reading of its counter. The transmitter then computes the elapsed count, and sends this value to the receiver as the "transmitter reading". Upon receipt of the start signal, the receiver records the current reading of its counter. Later, upon receipt of the stop signal, the receiver records the current reading of its counter, and then computes the elapsed count. Upon receipt of the "transmitter reading", the receiver is then able to determine the error of its own oscillator relative to that of the transmitter site oscillator as: ##EQU1## where A and B are predetermined constants which may be used to normalize the receiver and transmitter counter speeds to each other or to a third set of units. The transmitter then warps its own oscillator based on the calculated error. In an alternate embodiment, the transmitter resets its counter to zero upon sending the first start signal; and the receiver resets its counter to zero upon receipt of this signal.
    • 提供了一种用于使接收机振荡器与发射机振荡器同步的改进的方法和装置。 接收机配置有由接收器振荡器驱动的计数器; 并且发射机布置有由发射机振荡器驱动的计数器。 发射机向接收机发送启动信号,同时记录其计数器的当前读数。 之后,发射机向接收机发送停止信号,同时记录其计数器的当前读数。 然后,发射机计算经过的计数,并将该值作为“发射机读数”发送给接收机。 接收到起始信号后,接收器记录其计数器的当前读数。 之后,接收到停止信号后,接收器记录其计数器的当前读数,然后计算经过的计数。 接收器接收到“发射器读数”后,就可以确定自身的振荡器相对于发射机驻留振荡器的误差为:其中A和B是预定的常数,可用于标准化接收机 和发射机计数器彼此的速度或第三组单位。 然后,发射机根据计算出的误差来振荡自己的振荡器。 在替代实施例中,发送器在发送第一启动信号时将其计数器复位为零; 接收到该信号时,接收机将其计数器复位为零。
    • 9. 发明授权
    • Automatic channel polarity detection and correction arrangement and
method
    • 自动通道极性检测和校正装置及方法
    • US4807261A
    • 1989-02-21
    • US112151
    • 1987-10-26
    • Mark J. Johnson
    • Mark J. Johnson
    • H04L25/06H04L7/00
    • H04L25/06
    • A circuit arrangement automatically detects and corrects received data in an FSK signalling scheme wherein FSK data symbols are represented by a grey code-like numbering system and a predetermined word sync pattern leads each data transmission. The arrangement includes a memory (226) for prestoring data representative of the word sync pattern, a comparator (224) for comparing the prestored word sync pattern with the received data, an error detection circuit (228-252) for determining if the grey code-like numbering system has been transposed, and an error correcting circuit (220) for automatically correcting the transposition in the data.
    • 电路装置自动检测和校正FSK信令方案中的接收数据,其中FSK数据符号由灰色代码编号系统表示,并且预定字同步模式引导每个数据传输。 该装置包括用于预先表示字同步模式的数据的存储器(226),用于将预先存储的字同步模式与接收数据进行比较的比较器(224),用于确定灰度码 以及用于自动校正数据中的转置的纠错电路(220)。