Low top gate resistance JFET structure
    2.
    发明授权
    Low top gate resistance JFET structure 失效
    低顶栅电阻JFET结构

    公开(公告)号:US4876579A

    公开(公告)日:1989-10-24

    申请号:US301835

    申请日:1989-01-26

    摘要: A JFET having top gate contact regions formed in either one or both of the source and drain regions at and contacting a substantial portion of the edge terminations of the top gate in the source and drain regions. The improved top gate contact region can be used in three and four terminal JFET's.

    摘要翻译: 具有顶栅接触区域的JFET,其形成在源极和漏极区域中的一个或两个中,并且与源极和漏极区域中的顶部栅极的边缘端部的大部分接触。 改进的顶栅接触区域可用于三端和四端JFET。

    Information transmission system
    4.
    发明授权
    Information transmission system 失效
    信息传输系统

    公开(公告)号:US4352183A

    公开(公告)日:1982-09-28

    申请号:US201865

    申请日:1980-10-29

    IPC分类号: H04W84/08 G06F11/10

    CPC分类号: H04W84/08

    摘要: In order to make optimum use of the available transmission channels in an information transmission system, such as a trunked mobile ratio transmission system, where a number of uncoordinated users may wish to signal to a central control point in addition to using the channels for another purpose, the central control point monitors the channels and, when a channel is or becomes free, sends a command signal on that channel. When a user who is waiting to signal receives the command signal he chooses one of a predetermined number of immediately following time slots in an effectively random manner and sends his request in that slot in digital message form. The central control point sends an acknowledgement in the next time slot if and only if it receives the request in an error-free manner. If a user does not receive such an acknowledgement in response to the transmission of such a request he tries again when he receives the next command. The channel is used for other purposes, if necessary, at times other than those occupied by a command signal plus the subsequent predetermined number of time slots. If requests from more than one user should clash in the same time slot they will not be received by the control point in an error-free manner, this being determined by means of error check bits provided in the request message.

    摘要翻译: 为了最佳地利用诸如中继移动比传输系统的信息传输系统中的可用传输信道,除了将信道用于另一目的之外,多个未协调用户可能希望向中心控制点发信号 ,中央控制点监视通道,当通道为空闲时,在该通道上发送命令信号。 当等待信号的用户接收到命令信号时,他以有效的随机方式选择预定数量的紧随后续时隙中的一个,并以数字消息的形式在该时隙中发送他的请求。 当且仅当以无错误的方式接收请求时,中央控制点在下一个时隙发送确认。 如果用户响应于发送这样的请求而没有收到这样的确认,则当他接收到下一个命令时再次尝试。 如果需要,该信道用于其他目的,除了由命令信号占据的时间加上随后的预定数量的时隙之外的时间。 如果来自多个用户的请求在相同的时隙中冲突,则它们将不会以无错误的方式被控制点接收,这通过请求消息中提供的错误校验位来确定。

    Multiple-access communications system
    5.
    发明授权
    Multiple-access communications system 失效
    多路访问通信系统

    公开(公告)号:US4612637A

    公开(公告)日:1986-09-16

    申请号:US633547

    申请日:1984-07-23

    CPC分类号: H04W84/08

    摘要: A multiple-access communications system for an unlimited user population wherein a system controller continuously transmits Aloha signals on a slot-by-slot basis giving an updated number of time slots available whereby a calling party can select any one of the designated time slots at random. The calling party checks the time slot immediately preceding its selected time slot to ascertain if the current Aloha number is zero (or an equivalent thereof). If it is zero then the calling party reverts to listening for a time slot containing an Aloha number greater than zero. Alternatively if it is not zero the calling party apparatus sends a signal to the system controller in its selected time slot. Multipurpose signalling in each time slot can be carried out by the system controller thereby reducing the overhead on the system and speeding-up the setting-up of calls which may be off-air or non off-air.

    摘要翻译: 一种用于无限用户群的多址通信系统,其中系统控制器在逐个时隙的基础上连续发送Aloha信号,给出更新数量的可用时隙,由此主叫方可以随机选择指定的时隙中的任何一个 。 主叫方检查紧接其所选时隙之前的时隙,以确定当前的Aloha号码是否为零(或等效的)。 如果为零,则主叫方返回收听包含大于零的Aloha号码的时隙。 或者,如果不为零,则主叫方设备在其所选择的时隙中向系统控制器发送信号。 每个时隙中的多用途信令可以由系统控制器执行,从而减少系统的开销,并加快建立可能是空中或非空中的呼叫。

    Backwards drivable MOS output driver
    6.
    发明授权
    Backwards drivable MOS output driver 失效
    向后驱动MOS输出驱动器

    公开(公告)号:US06362665B1

    公开(公告)日:2002-03-26

    申请号:US09442291

    申请日:1999-11-19

    IPC分类号: H03B100

    CPC分类号: H03K19/00315

    摘要: In a bus driver circuit having a floating gate circuit for controlling voltage on the gate of the output driver and a floating well circuit for controlling voltage on the body of the output driver, the improvement comprising a well pull up circuit coupled to the output driver for applying supply voltage to the body during transmission and for applying the output of the floating gate circuit to the body during quiescence.

    摘要翻译: 在具有用于控制输出驱动器的栅极上的电压的浮动栅极电路和用于控制输出驱动器的主体上的电压的浮动阱电路的总线驱动器电路中,改进包括耦合到输出驱动器的阱上拉电路, 在传输期间向身体施加电源电压并且在静止期间将浮动门电路的输出施加到身体。

    Transmitter apparatus for an information transmission system
    9.
    发明授权
    Transmitter apparatus for an information transmission system 失效
    用于信息传输系统的发射机装置

    公开(公告)号:US4319222A

    公开(公告)日:1982-03-09

    申请号:US135962

    申请日:1980-03-31

    CPC分类号: H04B1/04 H04B1/50 H04B7/24

    摘要: In order to form a first-come first-served queue in an information transmission system employing a common transmission channel when several transmitters of the system try to gain access to the channel when it is already occupied, without employing a further transmission channel to a point at which an account is kept of the order in which the various transmitters request access, each transmitter which tries to gain access in these circumstances is caused to delay after the channel subsequently free before it actually accesses the channel, this delay being inversely proportional to the time the corresponding transmitter has waited. Thus the transmitter which has waited the longest gains the channel first and causes the other waiting transmitters to continue to wait.

    摘要翻译: 为了在采用公共传输信道的信息传输系统中形成先来先服务的队列,当系统的若干发射机已经被占用时尝试获得对该信道的接入,而不需要采用进一步的传输信道 在这种情况下,保持各种发射机请求接入的顺序的帐户,在这些情况下试图获得接入的每个发射机在其实际接入信道之后随后释放之后被延迟,该延迟与 相应的发射机等待的时间。 因此,等待最长的发射机首先增加信道,并使其他等待的发射机继续等待。