公开(公告)号：US6112260A

公开(公告)日：2000-08-29

申请号：US791590

申请日：1997-01-31

申请人： Arnold R. Colterjohn ,  Peter J. Brown ,  Douglas E. Stewart

发明人： Arnold R. Colterjohn ,  Peter J. Brown ,  Douglas E. Stewart

IPC分类号： G06F13/10 ,  G06F7/02 ,  G06F13/14

CPC分类号： G06F13/105

摘要： A computer system implements a standard modem without the use of a microcontroller. Instead, a digital signal processor is provided on an expansion card, but with direct links to the computer system itself. The code usually implemented in the microcontroller is instead implemented as a virtual modem controller to be called by the operating system of the computer itself. Further, this virtual modem controller includes a virtualized UART, that appears to the operating system software as a hardware UART, and the operating system driver software need not even have its input and output instructions replaced. Instead, debug registers are provided as breakpoints whenever an input/output instruction is executed to the I/O port range at which the UART would normally appear.

摘要翻译： 计算机系统在不使用微控制器的情况下实现标准调制解调器。 相反，在扩展卡上提供数字信号处理器，而是直接连接到计算机系统本身。 通常在微控制器中实现的代码被实现为由计算机本身的操作系统调用的虚拟调制解调器控制器。 此外，该虚拟调制解调器控制器包括虚拟化UART，其作为硬件UART在操作系统软件中出现，并且操作系统驱动器软件甚至不需要更换其输入和输出指令。 相反，每当对UART通常出现的I / O端口范围执行输入/输出指令时，调试寄存器就被提供为断点。

公开(公告)号：US4312002A

公开(公告)日：1982-01-19

申请号：US169604

申请日：1980-07-17

申请人： Douglas E. Stewart

发明人： Douglas E. Stewart

IPC分类号： H01Q1/42 ,  H01Q3/20 ,  H01Q19/10 ,  H01Q21/28 ,  H01Q19/18

CPC分类号： H01Q19/104 ,  H01Q1/42 ,  H01Q3/20

摘要： An antenna system has a parabolic reflector mounted so that it points generally downwards and a primary aerial is located at the focus of that reflector. Waves from the primary aerial are reflected back by the parabolic reflector to a reflector plate through an aperture in which the primary aerial projects. Scanning in both elevation and azimuth is effected by movement of the reflector plate.

摘要翻译： 天线系统具有抛物面反射器，其安装成使得其大致向下定位，并且主天线位于该反射器的焦点处。 来自主空中的波浪由抛物面反射器反射回反射板，通过其中主空中突出的孔。 在仰角和方位角上进行扫描是通过反射板的移动实现的。

公开(公告)号：US06301270B1

公开(公告)日：2001-10-09

申请号：US09032866

申请日：1998-03-02

申请人： Douglas E. Stewart

发明人： Douglas E. Stewart

IPC分类号： H04M100

CPC分类号： H04Q11/0471 ,  H04M1/57 ,  H04Q2213/13093 ,  H04Q2213/13097 ,  H04Q2213/13103 ,  H04Q2213/13106 ,  H04Q2213/13176 ,  H04Q2213/13202 ,  H04Q2213/13204 ,  H04Q2213/13209 ,  H04Q2213/13216 ,  H04Q2213/13299 ,  H04Q2213/1332 ,  H04Q2213/13405

摘要： A method and computer system according to the disclosed invention comparing from right to left the ISDN device address embedded within an ISDN message with a pre-existing ISDN device number resident in the computer system. The computer system receives data containing the ISDN device address through the ISDN-type data communication device. Upon receiving the data, the computer system compares the ISDN device address with the resident ISDN device number contained in the computer system in a right to left matching scheme. If the ISDN device address and ISDN device number match using the right to left matching scheme, the computer system responds to the ISDN message through the ISDN-type data communication device.

摘要翻译： 根据所公开的发明的一种方法和计算机系统，从右到左将ISDN消息中嵌入的ISDN设备地址与驻留在计算机系统中的预先存在的ISDN设备号进行比较。 计算机系统通过ISDN型数据通信设备接收包含ISDN设备地址的数据。 计算机系统在接收到数据后，将从右到左的匹配方案中的ISDN设备地址与包含在计算机系统中的常驻ISDN设备号进行比较。 如果ISDN设备地址和ISDN设备号码使用从右到左的匹配方案进行匹配，则计算机系统通过ISDN类型数据通信设备对ISDN消息进行响应。