公开(公告)号：EP0917066A3

公开(公告)日：2000-05-31

申请号：EP98309097.8

申请日：1998-11-06

Applicant: Compaq Computer Corporation

Inventor： Purcell, Brian T. ,  Whiteman, William F. ,  Bonola, Thomas J.

IPC: G06F13/40 ,  G06F13/28

CPC classification number: G06F13/4027

Abstract: A system for concurrent data transfer in a bus to bus input output processor including a first data path for moving data between a primary bus and a first memory, a second data path for moving data between a secondary bus and the second memory and a third data path for moving data between the primary bus, the first memory, the secondary bus, the second memory and an embedded processor. A controller controls the concurrent movement of data within the input output processor and further can convert a plurality of address lines used in the third data path for use as data lines. To effectuate the concurrent transfer of data across the various data paths, the controller isolates the embedded processor from the third data path and assigns a first destination device and a first data path to the first memory. The controller further assigns a second destination device and a second data path to the second memory. Data is then simultaneously transferred between a cache and the embedded processor, between the first memory and the first destination device across the first data path and between the second memory and the second destination device across the second data path. Data is also transferred across the primary bus to or from the input output device and across the secondary bus to or from the input output device.

公开(公告)号：EP0710374B1

公开(公告)日：2000-04-19

申请号：EP94923401.7

申请日：1994-06-30

Applicant: Compaq Computer Corporation

Inventor： MURRAY, David, E.

IPC: G06F3/16 ,  H04N1/00

CPC classification number: H04M11/06 ,  G06F3/162 ,  H04N1/00204 ,  H04N2201/0034

Abstract: An optional card including a DSP for use by a modem daughter board, where the modem daughter board is equipped with a data access arrangement (DAA) for upgrading a computer system to include modem and facsimile capabilities. The optional card may preferably be a sound board including a DSP and bus controller for interfacing with the I/O bus of the computer system, and a CODEC and connector for receiving and interfacing the daughter board modem to the DSP. In an alternative embodiment, the DSP is provided on the system board coupled to the host bus or the I/O bus of the computer system, and the modem functions, including a CODEC and DAA, are provided on an optional modem card. The CODEC includes logic for transferring digitized analog data to main memory as controlled by the CPU of the computer system. Modem software is provided to control communications and transfer of data in any of the embodiments.

公开(公告)号：EP0905630A3

公开(公告)日：2000-03-29

申请号：EP98307558.1

申请日：1998-09-17

Applicant: Compaq Computer Corporation

Inventor： Maclaren, John M. ,  Hausauer, Brian ,  Rajagopaian, Usha

IPC: G06F13/40

CPC classification number: G06F13/4072

Abstract: An apparatus and method for determining the types of expansion cards connected to the expansion slot connectors of a computer system. Detect signals are provided to decode logic for determining the types of expansion cards connected to the computer system. Ifthe expansion cards are compatible the decode logic produces an output power supply signal that indicates what the voltage level should be for the power supply to the cards. If the cards are incompatible, the decode logic may not provide power to any of the cards or only provide power to some ofthe cards that are compatible. For computers that allow expansion cards to connect to the computer while the computer is powered on, hot-plug logic cooperates with the decode logic to establish power and communication with newly connected interface cards. The connectors in the computer do not include keys and thus interface cards without keys, as well as cards with different types of key arrangements can be connected to and communicate with the computer. A removable keyed adapter can be mated with the expansion slot connectors to effectively provide keys to the expansion slot connectors to ensure reliable connections between the interface cards and expansion slot connectors. The adapters can be keyed in variety of arrangements to match whatever keying arrangements are included on the interface cards. In an alternative embodiment, voltage drops are provided to quick switches to ensure signaling compatibility between different card types. Further, all expansion slot connectors can be keyed for only a subset of the possible card types available and thus reduce the logic necessary to ensure compatibility.

公开(公告)号：EP0768607A3

公开(公告)日：2000-03-01

申请号：EP96307280.6

申请日：1996-10-04

Applicant: Compaq Computer Corporation

Inventor： Callison, Ryan A. ,  Chard, Gary F.

IPC: G06F11/10 ,  G06F3/06 ,  G06F13/16

CPC classification number: G06F11/1076 ,  G06F2211/1054

Abstract: Circuitry for performing hardware assisted XOR operations to generate parity bits for a disk array system. The circuitry includes a controller (118) that acts as an interface between a PCI bus (102) and a DRAM (116) that includes a write-posting cache portion (136) and an XOR buffer portion (134). The DRAM has a maximum data storage capacity, and the controller is allocated an address space that is twice the maximum storage capacity of the DRAM. The address space is divided into two portions, a normal address range and an XOR address range. A write to the normal address range produces a normal write cycle to the DRAM, while a write to the XOR address range generates a read-modify-write XOR cycle to the DRAM. In the read-modify-write XOR cycles, the read data are XORed with the write data. Selected data are cumulatively XORed to generate new parity information.

公开(公告)号：EP0898216A3

公开(公告)日：2000-02-23

申请号：EP98306483.3

申请日：1998-08-14

Applicant: Compaq Computer Corporation

Inventor： Angelo, Michel F. ,  Collins, David L. ,  Kim, Donald D. ,  Jansen, Kenneth A.

IPC: G06F1/00

CPC classification number: H04L41/28 ,  H04L63/0442 ,  H04L63/065 ,  H04L63/123

Abstract: A method for providing secure remote control commands in a distributing computer environment. In the preferred embodiment of the invention, a network administrator or network management software creates a shutdown record, including an index or time stamp, for powering down a specified network computer(s). Prior to broadcast over the network, a secure one-way hash function is performed on the shutdown record. The result of the one-way hash function is encrypted using the network administrator's private key, thereby generating a digital signature that can be verified by specially configured network nodes. The digital signature is appended to the original shutdown record prior to broadcast to the network. Upon receiving the broadcast message, the targeted network computer(s) validates the broadcast message by verifying the digital signature of the packet or frame. The validation process is performed by decrypting the hash value representation of the shutdown record using the network administrator's public key. A one-way hash function is also performed on the original shutdown record portion of the received message. If the two values match, the broadcast message is determined to be authentic and the shutdown control code is executed. The invention insures that the shutdown command was neither modified in transit nor originated from an unauthorized source.

公开(公告)号：EP0962861A2

公开(公告)日：1999-12-08

申请号：EP99304353.8

申请日：1999-06-03

Applicant: Compaq Computer Corporation

Inventor： Ehlinger, Early D. ,  Fletcher, Mark F.

IPC: G06F9/46 ,  H04L12/24

CPC classification number: H04L41/0893 ,  H04L67/42

Abstract: The present inventions provide a cluster administration system that is capable of handling a cluster having one or more computing devices. The number of computing devices that may be included in a cluster is limited only by practical considerations rather than software or hardware limitations. In one embodiment, a cluster administration system includes a cluster of computing devices, one of the computing devices being an owner. The cluster further includes a resource. Direct access to the resource by the computing devices is controlled by the owner of the cluster. The cluster administration system also includes an arbiter. The arbiter and the cluster are in communication with each other and a network, the cluster providing the network with access to the storage device. The arbiter controls the admission of new computing devices to the cluster when the owner of the cluster is incapable of admitting the new computing device. Having the arbiter outside the cluster provides greater reliability. The arbiter is not affected by failures within the cluster. One or more of the computing devices of the cluster may fail, but the administration of the cluster is not affected. The functions of the arbiter may also be distributed among several independent computing devices which can hand off the primary duties of the arbiter should one or more of the independent computing devices fail to satisfactorily perform the duties of arbitration.

Abstract translation: 本发明提供了能够处理具有一个或多个计算设备的集群的集群管理系统。 可能包含在群集中的计算设备的数量仅受实际考虑而不是软件或硬件限制的限制。 在一个实施例中，集群管理系统包括一组计算设备，其中一个计算设备是所有者。 集群还包括一个资源。 由计算设备直接访问资源由群集的所有者控制。 集群管理系统还包括仲裁器。 仲裁器和集群彼此通信，并且网络，群集为网络提供对存储设备的访问。 当集群的所有者不能接受新的计算设备时，仲裁器控制新的计算设备进入集群。 将仲裁者置于群集之外提供更高的可靠性。 仲裁器不受群集内的故障影响。 集群的一个或多个计算设备可能会失败，但集群的管理不受影响。 仲裁者的功能也可以分布在几个独立的计算设备之间，如果一个或多个独立计算设备不能令人满意地执行仲裁的责任，则可以将仲裁者的主要职责移交。

公开(公告)号：EP0869423A3

公开(公告)日：1999-11-24

申请号：EP98302457.1

申请日：1998-03-30

Applicant: Compaq Computer Corporation

Inventor： Sturgeon, Derrill L. ,  Brusky, Kevin J.

IPC: G06F3/023

CPC classification number: G06F3/033 ,  G06F3/0489 ,  H04N5/4401 ,  H04N9/641 ,  H04N21/4143 ,  H04N21/4316 ,  H04N21/443 ,  H04N21/485 ,  H04N2005/4432

Abstract: A method and apparatus allows users to quickly effect a modal change in an appliance, such as home theatre personal computer, having first and second modes. The apparatus captures a user actuation indicative of a modal change. The user actuation may be a mouse button closure, a keyboard button closure, or a remote control button closure. Upon detecting the user actuation indicative of a modal change, the apparatus detects the current mode for the appliance. Based on the current mode of the appliance, the apparatus cycles to the next mode in a round-robin basis and sets the next mode to become the current mode for the appliance. Further, in setting the next mode, the apparatus displays the next mode of the appliance as a mode change item in a menu list. The apparatus also then requests a second user actuation confirming a modal change. Further, in the event that the user confirms the modal change, the apparatus sets the next mode of the appliance to be the current mode for the appliance and maximizes the window associated with the mode of the appliance.

公开(公告)号：EP0810711A3

公开(公告)日：1999-09-15

申请号：EP97302968.9

申请日：1997-04-30

Applicant: Compaq Computer Corporation

Inventor： Stanford, Edward R.

IPC: H02J1/10

CPC classification number: H02M3/33515 ,  F04D25/08 ,  F04D27/001 ,  H02J1/108 ,  H02M3/285 ,  Y10T307/582

Abstract: A power supply module includes an input and an output and a power converter for supplying power from the input to the output. A controller controls the amount of power supplied from the input to the output in response to a feedback circuit and a module current sensing circuit senses module output current at the output. A microprocessor selectively adjusts voltage in the feedback circuit in response to the module output current sensed by the module current sensing circuit.

公开(公告)号：EP0461924B1

公开(公告)日：1999-09-15

申请号：EP91305420.1

申请日：1991-06-14

Applicant: Compaq Computer Corporation

Inventor： Kelley, Philip Co. ,  Collins, Michael J.

IPC: G06F12/08

CPC classification number: G06F12/0888

公开(公告)号：EP0939375A2

公开(公告)日：1999-09-01

申请号：EP99300529.7

申请日：1999-01-26

Applicant: Compaq Computer Corporation

Inventor： Dupuy, James M.

IPC: G06F13/40

CPC classification number: G06F13/4072

Abstract: An apparatus reduces inductive coupling and cross-talks in a bus which is connected to a combination of differential devices and single-ended devices. Each differential device has a positive line and a negative line. The positive line is provided to an input of another device on a bus as normal. The negative line of the differential device is routed by a switch in accordance with the invention. The switch receives from the bus a sensing signal which is asserted when at least one single-ended device is connected to the bus. When the sensing signal is asserted, the switch grounds the negative line of the differential device. Alternatively, if all devices on the bus are differential devices, the switch connects the negative lines of the differential devices together and acts as a passthrough for the negative signal.

Abstract translation: 一种装置减少了连接到差分装置和单端装置的组合的总线中的电感耦合和交叉。 每个差分器件都有一个正极线和一个负极线。 在正常情况下，正线被提供给总线上的另一设备的输入。 根据本发明，差分装置的负极线由开关路由。 交换机从总线接收传感信号，当至少一个单端设备连接到总线时，该信号被断言。 当感测信号被置位时，开关将差分器件的负极接地。 或者，如果总线上的所有器件都是差分器件，则开关将差分器件的负极连接在一起，并作为负信号的通路。