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    • 8. 发明授权
    • Frequency-signalling circuit for a telephone
    • 电话频率信号电路
    • US4025865A
    • 1977-05-24
    • US647513
    • 1976-01-08
    • John Charles MundayAndrew McDonald
    • John Charles MundayAndrew McDonald
    • H03K3/037H03K3/80H03K3/84H04M1/50H03K3/02
    • H04M1/505H03K3/037H03K3/0372H03K3/84
    • A frequency signaling circuit includes a plurality of channels, each channel having division means for frequency division of a clock signal, the division ratio being selected in accordance with data defining the required frequency. Stochastic conversion means are provided for converting the output of the frequency division means into pulse trains with the repetition rate of the required frequency. The stochastic conversion means includes a noise generating circuit, a value generating circuit for generating signals representing a predetermined sequence of values at a rate determined by the output of the division means and a comparison circuit for comparing the values produced by the value generating circuit with the values represented by the outputs of the noise generating circuit and for producing a pulse whenever a predetermined relation exists between the values.
    • 频率信号电路包括多个信道,每个信道具有用于时钟信号分频的划分装置,根据定义所需频率的数据选择分频比。 提供了随机转换装置,用于将分频装置的输出转换成具有所需频率的重复频率的脉冲串。 随机转换装置包括一个噪声发生电路,一个产生电路的值产生电路,用于以由分割装置的输出确定的速率产生一个表示预定序列值的信号;以及比较电路,用于将由值产生电路产生的值与 由噪声产生电路的输出表示的值,并且每当值之间存在预定关系时产生脉冲。
    • 10. 发明申请
    • Network Selection
    • 网络选择
    • US20100014483A1
    • 2010-01-21
    • US12308805
    • 2007-06-19
    • Robert HancockEleanor HepworthStephen McCannAndrew McDonald
    • Robert HancockEleanor HepworthStephen McCannAndrew McDonald
    • H04W36/34
    • H04W48/18H04L12/66H04W48/14
    • A wireless user device, in radio communication with a first access point of one or more networks with which it could communicate via at least one of a plurality of access points, sends a network selection request to the first access point. If the network wishes to initiate a response from another access point in the same or another network, the first access point forwards the network selection request to one or more neighboring access points, in the same or another network. If any of the neighboring access points is able to communicate with the user device, that neighboring access point sends a response directly to the wireless user device and the wireless user device chooses the most suitable network from the responses sent.
    • 无线用户设备与其可以经由多个接入点中的至少一个通信的一个或多个网络的第一接入点进行无线电通信,向第一接入点发送网络选择请求。 如果网络希望从相同或另一网络中的另一接入点发起响应,则第一接入点将网络选择请求转发到相同或另一网络中的一个或多个相邻接入点。 如果任何相邻接入点能够与用户设备进行通信,则该相邻接入点将响应直接发送到无线用户设备,并且无线用户设备从所发送的响应中选择最合适的网络。