Telecommunication system for broadcast quality video transmission
    1.
    发明授权
    Telecommunication system for broadcast quality video transmission 失效
    广播质量视频传输电信系统

    公开(公告)号:US6064422A

    公开(公告)日:2000-05-16

    申请号:US844643

    申请日:1997-04-21

    IPC分类号: H04N7/14

    CPC分类号: H04N7/108

    摘要: A communication system is provided which allows video and audio/video transmissions over unloaded, twisted pairs of telephone wires. The system provides for automatic compensation of attenuation of a broadband video signal by measuring the attenuation of the low frequency components of the signal to determine the length of the unloaded, twisted pair through which the signal has been transmitted. This calculation is performed by comparing the attunated signal with the known signal level of transmission. Based upon the calculated length, the signal is amplified nonlinearly, since a greater loss occurs in the high frequency portions of a broadband signal than in the low frequency portions in transmission over twisted pairs of telephone wires. The signal is thereupon reconstructed. Also, the system allows transmission of a broadband frequency spectrum much wider than has heretofore been obtained. A broadband signal of at least 10.7 MHz can be transmitted over the system. The system also provides for left and right audio inputs and outputs, as well as auxiliary inputs and outputs. The transmission system can be utilized so that persons with a video camera and a personal computer can communicate with each other, transmitting full-motion, color video over unloaded, twisted pairs of telephone wires.

    摘要翻译: 提供了一种通信系统,其允许通过无负载的双绞电话线进行视频和音频/视频传输。 该系统通过测量信号的低频分量的衰减来确定宽带视频信号衰减的自动补偿,以确定已经传输信号的无负载双绞线的长度。 通过将调整的信号与已知的传输信号电平进行比较来执行该计算。 基于计算的长度,信号被非线性放大,因为宽带信号的高频部分比在双绞线电话线上的传输中的低频部分发生更大的损耗。 信号随后重建。 此外,该系统允许宽带频谱的传输比以前获得的宽得多。 至少10.7 MHz的宽带信号可以通过系统传输。 该系统还提供左,右音频输入和输出,以及辅助输入和输出。 可以利用传输系统,使得具有摄像机和个人计算机的人可以彼此通信,通过无负载的双绞电话线传输全运动彩色视频。

    Variable temperature seat climate control system
    2.
    发明授权
    Variable temperature seat climate control system 失效
    变温座椅气候控制系统

    公开(公告)号:US5626021A

    公开(公告)日:1997-05-06

    申请号:US288459

    申请日:1994-08-10

    摘要: A temperature climate control system comprises a variable temperature seat, at least one heat pump, at least one heat pump temperature sensor, and a controller. Each heat pump comprises a number of Peltier thermoelectric modules for temperature conditioning the air in a main heat exchanger and a main exchanger fan for passing the conditioned air from the main exchanger to the variable temperature seat. The Peltier modules and each main fan may be manually adjusted via a control switch or a control signal. Additionally, the temperature climate control system may comprise a number of additional temperature sensors to monitor the temperature of the ambient air surrounding the occupant as well as the temperature of the conditioned air directed to the occupant. The controller is configured to automatically regulate the operation of the Peltier modules and/or each main fan according to a temperature climate control logic designed both to maximize occupant comfort during normal operation, and minimize possible equipment damage, occupant discomfort, or occupant injury in the event of a heat pump malfunction.

    摘要翻译: 温度气候控制系统包括可变温度座椅,至少一个热泵,至少一个热泵温度传感器和控制器。 每个热泵包括多个用于对主热交换器中的空气进行温度调节的珀尔帖热电模块和用于将调节空气从主交换器传递到可变温度座的主交换器风扇。 Peltier模块和每个主风扇可以通过控制开关或控制信号手动调节。 此外,温度气候控制系统可以包括多个附加的温度传感器,以监测乘客周围环境空气的温度以及被引导到乘员的调节空气的温度。 控制器被配置为根据温度气候控制逻辑来自动调节珀尔帖模块和/或每个主风扇的操作,以便在正常操作期间最大化乘客的舒适度,并且将可能的设备损坏,乘客的不适或占用者伤害最小化 发生热泵故障的事件。

    Radio frequency energy management system
    3.
    发明授权
    Radio frequency energy management system 有权
    射频能源管理系统

    公开(公告)号:US06184656B2

    公开(公告)日:2001-02-06

    申请号:US09353946

    申请日:1999-07-15

    IPC分类号: H02V700

    摘要: A radio frequency energy management system includes a number of battery control modules and/or a control unit that are configured to exchange battery operating parameter/performance information and control signals by radio frequency. Each battery control module includes one or more sensing elements to measure one or more operating parameter of a respective battery, and at least one device selected from the group including a radio frequency receiver, a radio frequency transmitter, a memory device, a controller, control devices, a signal blocking device, and combinations thereof. The control unit is configured to monitor and control the operating parameters of the batteries and includes a radio frequency receiver and a radio frequency transmitter. The control unit evaluates data transmitted from battery control modules according to a predetermined control system program, and transmits a predetermined control command to one or more battery control modules to achieve battery equalization and battery thermal management. The energy management system can also include one or more device for identifying the relative location of a battery control module in the system, and an interface to permit communication with battery control modules by another device independent of the control unit. Radio frequency signals are transmitted between the control unit and each battery control module, and between battery control modules, without additional wiring, thereby eliminating the disadvantages of wired-type systems.

    摘要翻译: 射频能量管理系统包括多个电池控制模块和/或控制单元,其被配置为通过射频来交换电池操作参数/性能信息和控制信号。 每个电池控制模块包括用于测量相应电池的一个或多个操作参数的一个或多个感测元件,以及从包括射频接收器,射频发射器,存储器件,控制器,控制器 装置,信号阻挡装置及其组合。 控制单元被配置为监视和控制电池的操作参数,并且包括射频接收器和射频发射器。 控制单元根据预定的控制系统程序评估从电池控制模块发送的数据,并将预定的控制命令发送到一个或多个电池控制模块以实现电池均衡和电池热管理。 能量管理系统还可以包括用于识别电池控制模块在系统中的相对位置的一个或多个设备,以及允许与控制单元独立的另一设备与电池控制模块通信的接口。 无线电频率信号在控制单元和每个电池控制模块之间以及电池控制模块之间传输,无需附加布线,从而消除了有线系统的缺点。

    Radio frequency energy management system
    4.
    发明授权
    Radio frequency energy management system 失效
    射频能源管理系统

    公开(公告)号:US5703464A

    公开(公告)日:1997-12-30

    申请号:US495984

    申请日:1995-06-28

    摘要: A radio frequency energy management system includes a number of battery control modules and an control unit, each configured to transmit and receive radio frequency signals comprising information relating to the operating parameters of batteries in a battery pack, and control commands for regulating the operating parameters of such batteries. Each battery control module is configured to monitor one or more operating parameter of a respective battery, and to regulate one or more operating parameter according to a control system program in the control unit. Each battery control module includes one or more sensing elements to measure one or more operating parameter of a respective battery, a radio frequency receiver, and a radio frequency transmitter. The control unit is configured to monitor and control the operating parameters of the batteries and includes a radio frequency receiver, configured to receive a radio frequency signal transmitted by the radio frequency transmitter in each battery control module, and a radio frequency transmitter configured to transmit a radio frequency signal capable of being received by the radio frequency receiver in each battery control module. The control unit evaluates data transmitted from each battery control module according to a predetermined control system program, and transmits a predetermined control command to one or more battery control module to achieve battery equalization. Radio frequency signals are transmitted between the control unit and each battery control module without additional wiring, thereby eliminating the disadvantages of wired-type systems.

    摘要翻译: 无线电频率能量管理系统包括多个电池控制模块和控制单元,每个控制单元被配置为发送和接收包括与电池组中的电池的操作参数相关的信息的射频信号,以及用于调节电池组的操作参数的控制命令 这样的电池。 每个电池控制模块被配置为监视相应电池的一个或多个操作参数,并且根据控制单元中的控制系统程序调节一个或多个操作参数。 每个电池控制模块包括用于测量相应电池,射频接收器和射频发射器的一个或多个操作参数的一个或多个感测元件。 控制单元被配置为监视和控制电池的操作参数,并且包括:射频接收器,被配置为接收由每个电池控制模块中的射频发射器发送的射频信号;以及射频发射机,被配置为发送 射频信号能够由每个电池控制模块中的射频接收器接收。 控制单元根据预定的控制系统程序评估从每个电池控制模块发送的数据,并且将预定的控制命令发送到一个或多个电池控制模块以实现电池均衡。 射频信号在控制单元和每个电池控制模块之间传输,无需附加布线,从而消除了有线系统的缺点。