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公开(公告)号：US5920197A
公开(公告)日：1999-07-06
申请号：US512170
申请日：1995-08-07
IPC分类号： H01R13/641 , H01R13/703 , H01H31/04
CPC分类号： H01R13/641 , H01R13/703
摘要： A sensor is provided for automatically detecting the presence or absence of an electronic device which interfaces with other devices via an information signal. The sensor comprises a receiving connector which receives a mating connector associated with the electronic device to electrically and physically connect the device to the sensor and to another device. The receiving connector includes a terminal to which the information signal is applied. The sensor also comprises a sensing circuit connected to the terminal of the receiving connector for detecting whether the information signal is present at the terminal. The sensing circuit generates an output signal which indicates when a mating connector is received within the receiving connector, and thus whether the electronic device is present, in dependence upon whether the information signal is detected at the terminal. In one embodiment, the sensing circuit comprises a low-pass analog filter connected to a switching transistor for generating a signal at two logic levels. The two logic levels respectively indicate whether or not a mating connector is received within the receiving connector, and thus whether or not the electronic device is present.
摘要翻译： 提供了一种传感器，用于通过信息信号自动检测与其他设备接口的电子设备的存在与否。 传感器包括接收连接器，其接收与电子设备相关联的配合连接器，以电和物理地将设备连接到传感器和另一设备。 接收连接器包括施加信息信号的端子。 传感器还包括连接到接收连接器的端子的检测电路，用于检测信息信号是否存在于终端。 感测电路产生一个输出信号，该信号指示接收连接器何时接收配对连接器，以及根据是否在终端检测到信息信号来确定电子设备是否存在。 在一个实施例中，感测电路包括连接到开关晶体管的低通模拟滤波器，用于产生两个逻辑电平的信号。 两个逻辑电平分别表示配合连接器是否被接收在接收连接器内，从而是否存在电子设备。
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2.发明授权Printed circuit board processor card for upgrading a processor-based system 失效用于升级基于处理器的系统的印刷电路板处理器卡
公开(公告)号：US5644760A
公开(公告)日：1997-07-01
申请号：US432906
申请日：1995-05-01
CPC分类号： G06F13/4068
摘要： A printed circuit board (PCB) processor card is described. The processor card includes a processor, its associated processor card system bus, a clock generator, and its associated processor card system clock bus. The processor card is designed to include the elements that are most likely to be upgraded, i.e. the processor and the clock. As such it is particularly useful when employed for system upgrades.
摘要翻译： 描述了印刷电路板（PCB）处理器卡。 处理器卡包括处理器，其相关联的处理器卡系统总线，时钟发生器及其相关联的处理器卡系统时钟总线。 处理器卡被设计为包括最有可能升级的元件，即处理器和时钟。 因此，当用于系统升级时，它特别有用。
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公开(公告)号：US5587887A
公开(公告)日：1996-12-24
申请号：US432227
申请日：1995-05-01
CPC分类号： H05K1/0262 , H05K1/029 , H05K1/0298 , H05K2201/093 , H05K2201/10689
摘要： The present invention is a printed circuit board design having a configurable voltage supply and a method for implementing a configurable voltage supply PCB with a family of circuit designs. The printed circuit board is designed such that voltage supply planes can be configured to match the device requirements for different ICs inserted into the PCB. The PCB comprises electrically isolated conductive layers that are split into a plurality of electrically isolated fixed and undefined voltage planes. The fixed voltage planes are each coupled to a different supply voltage provided by an external power supply. Undefined voltage planes are coupled to fixed voltage planes with insertable conductive jumpers to obtain the desired voltage supply for each voltage plane. The voltage plane configuration of a particular PCB can be changed depending on where jumpers are inserted to accommodate device voltage requirements over a family of devices.
摘要翻译： 本发明是具有可配置电压源的印刷电路板设计和用于实现具有一系列电路设计的可配置电压供应PCB的方法。 印刷电路板的设计使得电压供应平面可以配置为匹配插入到PCB中的不同IC的器件要求。 PCB包括电隔离的导电层，其被分离成多个电隔离的固定和未定义的电压平面。 固定电压平面各自耦合到由外部电源提供的不同电源电压。 未定义的电压平面与可插入的导电跳线耦合到固定电压平面，以获得每个电压平面所需的电压电源。 特定PCB的电压平面配置可以根据插入跳线的位置而改变，以适应一系列器件的器件电压要求。
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公开(公告)号：US5909571A
公开(公告)日：1999-06-01
申请号：US699169
申请日：1996-08-19
CPC分类号： G06F1/10
摘要： The clock configuration of a printed circuit board (PCB) processor card is described. A processor card including a processor, its associated processor card system bus, a clock generator, and its associated processor card system clock bus is optimized by providing various clock configurations and distributions. In one configuration, multiple clock signals are coupled to a system clock bus for distributing to a host card having system devices. In another configuration, multiple clock signals having various clock rates are coupled to the processor device on the processor card.
摘要翻译： 描述印刷电路板（PCB）处理器卡的时钟配置。 通过提供各种时钟配置和分布来优化包括处理器，其相关联的处理器卡系统总线，时钟发生器及其相关联的处理器卡系统时钟总线的处理器卡。 在一种配置中，多个时钟信号耦合到系统时钟总线，用于分配到具有系统设备的主机卡。 在另一种配置中，具有各种时钟速率的多个时钟信号被耦合到处理器卡上的处理器设备。
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公开(公告)号：US5736796A
公开(公告)日：1998-04-07
申请号：US432233
申请日：1995-05-01
CPC分类号： H05K1/0262 , H05K1/029 , H05K2201/093 , H05K2201/10015 , H05K2201/10196 , H05K2201/10689
摘要： The present invention is a printed circuit board having conductive layers split into electrically isolated voltage supply plane regions each plane region being connectable to an external supply voltage. The voltage supply plane regions are split to reduce the total number of PCB conductive layers. Voltage supply plane regions are configured to match the device voltage requirements and their placement on the PCB. In the case in which a circuit includes a device having two voltage supply requirements, a first set of the device's power supply pins are fixedly coupled to a first voltage supply plane region and a second set of the device's power supply pins are fixedly coupled to a second voltage supply plane region. In this instance, each of the first and second voltage supply plane regions are fixedly connectable to external voltage supplies or to a voltage regulator according to the voltage supply requirements of the device.
摘要翻译： 本发明是一种印刷电路板，其具有分成电隔离的电压供应平面区域的导电层，每个平面区域可连接到外部电源电压。 分压供电平面区域以减少PCB导电层的总数。 电压供应平面区域配置为匹配器件电压要求及其在PCB上的位置。 在电路包括具有两个电压供应要求的器件的情况下，器件的电源引脚的第一组固定地耦合到第一电压供应平面区域，并且第二组器件的电源引脚固定地耦合到 第二电压供应平面区域。 在这种情况下，第一和第二电压供应平面区域中的每一个可以根据设备的电压供应要求固定地连接到外部电压源或电压调节器。
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公开(公告)号：US5680297A
公开(公告)日：1997-10-21
申请号：US511640
申请日：1995-08-07
CPC分类号： G06F1/182 , H05K9/0064 , H05K1/0216 , H05K1/14
摘要： A computer system connector panel including EMI filtering on the computer system housing connector panel instead of on the system motherboard so that I/O signals are filtered just before being transmitted out of the computer system housing thereby reducing EMI affects on external A/V devices.
摘要翻译： 计算机系统连接器面板包括计算机系统外壳连接器面板上的EMI滤波，而不是在系统主板上，以便在传出计算机系统外壳之前对I / O信号进行滤波，从而降低EMI对外部A / V设备的影响。
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公开(公告)号：US5604709A
公开(公告)日：1997-02-18
申请号：US512180
申请日：1995-08-07
申请人： Noah M. Price
发明人： Noah M. Price
CPC分类号： G11C5/141
摘要： A relatively inexpensive static random access memory is utilized to store persistent data in a computer. To provide the SRAM with this capability, it is connected to a source of power within the computer that includes a battery. The source of power is connected to the SRAM in a manner such that the SRAM is in an enabled state whenever any power is available to it, from either a battery or a power supply connected to a regulated voltage source. When the computer is turned off, to prevent devices connected to the SRAM from draining current being provided by the battery, a chip select terminal of the SRAM is isolated from other circuits on the computer, to prevent leakage.
摘要翻译： 使用相对便宜的静态随机存取存储器来存储计算机中的持久数据。 为了向SRAM提供此功能，它连接到包含电池的计算机内的电源。 功率源以SRAM的方式连接到SRAM，无论是从电池还是连接到稳压电源的电源，每当有可用的任何电源时，SRAM处于使能状态。 当计算机关闭时，为了防止连接到SRAM的设备排出电池提供的电流，SRAM的芯片选择端与计算机上的其他电路隔离，以防止泄漏。
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