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1. 发明授权

US5862387A Method and apparatus for handling bus master and direct memory access (DMA) requests at an I/O controller 失效
标题翻译：用于在I / O控制器处理总线主控和直接存储器访问（DMA）请求的方法和装置
公开(公告)号：US5862387A
公开(公告)日：1999-01-19
申请号：US884023
申请日：1997-06-27
申请人： Neil W Songer , James P. Kardach , Sung-Soo Cho , Jim S. Cheng , Debra T. Cohen , John W. Horigan , Nader Raygani , Seyed Yahay Sotoudeh , David I. Poisner
发明人： Neil W Songer , James P. Kardach , Sung-Soo Cho , Jim S. Cheng , Debra T. Cohen , John W. Horigan , Nader Raygani , Seyed Yahay Sotoudeh , David I. Poisner
IPC分类号： G06F13/28 , G06F13/30 , G06F13/364 , G06F13/00
CPC分类号： G06F13/28 , G06F13/30 , G06F13/364
摘要： A computer system that implements a direct memory access (DMA) request passing protocol. The computer system may comprise a Peripheral Component Interconnect (PCI) bus that includes an electrical interface as specified by a PCI Local Bus standard. The PCI bus is coupled to at least one DMA agent and a DMA controller. The DMA agent issues DMA requests to the DMA controller using the electrical interface of the PCI bus. According to one embodiment, a system I/O controller receives the DMA requests and passes them on to the DMA controller, which arbitrates the DMA requests and passes back a grant to the system I/O controller. The system I/O controller uses the electrical interface of the PCI bus to pass the grant to the DMA agent. The same DMA request passing protocol may be implemented in any bus having an electrical interface that specifies a unique request signal line for each bus agent of the bus.
摘要翻译：实现直接内存访问（DMA）请求传递协议的计算机系统。计算机系统可以包括外围组件互连（PCI）总线，其包括由PCI本地总线标准指定的电接口。 PCI总线耦合到至少一个DMA代理和DMA控制器。 DMA代理使用PCI总线的电接口向DMA控制器发出DMA请求。根据一个实施例，系统I / O控制器接收DMA请求并将它们传递到DMA控制器，DMA控制器对DMA请求进行仲裁，并将授权传回给系统I / O控制器。系统I / O控制器使用PCI总线的电接口将授权传递给DMA代理。相同的DMA请求传递协议可以在具有为总线的每个总线代理指定唯一请求信号线的电接口的任何总线中实现。

2. 发明授权

US5664197A Method and apparatus for handling bus master channel and direct memory access (DMA) channel access requests at an I/O controller 失效
标题翻译：用于在I / O控制器处理总线主通道和直接存储器访问（DMA）通道访问请求的方法和装置
公开(公告)号：US5664197A
公开(公告)日：1997-09-02
申请号：US426825
申请日：1995-04-21
申请人： James P. Kardach , Sung-Soo Cho , Jim S. Cheng , Debra T. Cohen , John W. Horigan , Nader Raygani , Seyed Yahay Sotoudeh , David I. Poisner , Neil W. Songer
发明人： James P. Kardach , Sung-Soo Cho , Jim S. Cheng , Debra T. Cohen , John W. Horigan , Nader Raygani , Seyed Yahay Sotoudeh , David I. Poisner , Neil W. Songer
IPC分类号： G06F13/28 , G06F13/30 , G06F13/364 , G06F13/00
CPC分类号： G06F13/28 , G06F13/30 , G06F13/364
摘要： A computer system that implements a direct memory access (DMA) request passing protocol. The computer system may comprise a Peripheral Component Interconnect (PCI) bus that includes an electrical interface as specified by a PCI Local Bus standard. The PCI bus is coupled to at least one DMA agent and a DMA controller. The DMA agent issues DMA requests to the DMA controller using the electrical interface of the PCI bus. According to one embodiment, a system I/O controller receives the DMA requests and passes them on to the DMA controller, which arbitrates the DMA requests and passes back a grant to the system I/O controller. The system I/O controller uses the electrical interface of the PCI bus to pass the grant to the DMA agent. The same DMA request passing protocol may be implemented in any bus having an electrical interface that specifies a unique request signal line for each bus agent of the bus.
摘要翻译：实现直接存储器访问（DMA）请求传递协议的计算机系统。计算机系统可以包括外围组件互连（PCI）总线，其包括由PCI本地总线标准指定的电接口。 PCI总线耦合到至少一个DMA代理和DMA控制器。 DMA代理使用PCI总线的电接口向DMA控制器发出DMA请求。根据一个实施例，系统I / O控制器接收DMA请求并将它们传递到DMA控制器，DMA控制器对DMA请求进行仲裁，并将授权传回给系统I / O控制器。系统I / O控制器使用PCI总线的电接口将授权传递给DMA代理。相同的DMA请求传递协议可以在具有为总线的每个总线代理指定唯一请求信号线的电接口的任何总线中实现。

3. 发明授权

US5729762A Input output controller having interface logic coupled to DMA controller and plurality of address lines for carrying control information to DMA agent 失效
标题翻译：具有耦合到DMA控制器和多个地址线的接口逻辑的输入输出控制器，用于向DMA代理传送控制信息
公开(公告)号：US5729762A
公开(公告)日：1998-03-17
申请号：US426818
申请日：1995-04-21
申请人： James P. Kardach , Sung-Soo Cho , Debra T. Cohen , John W. Horigan , Neil W. Songer
发明人： James P. Kardach , Sung-Soo Cho , Debra T. Cohen , John W. Horigan , Neil W. Songer
IPC分类号： G06F13/28 , G06F15/40
CPC分类号： G06F13/28
摘要： A computer system performs direct memory access (DMA) transfers according to a DMA transfer protocol. The computer system may comprise a Peripheral Component Interconnect (PCI) bus that includes an electrical interface as specified by a PCI Local Bus standard. A DMA agent, system memory, and a DMA controller are coupled to the bus. The DMA controller uses the electrical interface of the PCI bus to control a DMA transfer between system memory and the DMA agent. According to one embodiment, a system I/O controller is coupled between the DMA controller and the PCI bus. The system I/O controller passes DMA control information from the DMA controller to the DMA agent using the electrical interface of the PCI bus. The electrical interface of the PCI bus includes a plurality of address lines and a grant signal line coupled to the DMA agent, wherein the system that I/O controller transmits DMA control information to the DMA agent while asserting the grant signal line.
摘要翻译：计算机系统根据DMA传输协议执行直接存储器访问（DMA）传输。计算机系统可以包括外围组件互连（PCI）总线，其包括由PCI本地总线标准指定的电接口。 DMA代理，系统存储器和DMA控制器耦合到总线。 DMA控制器使用PCI总线的电接口来控制系统内存和DMA代理之间的DMA传输。根据一个实施例，系统I / O控制器耦合在DMA控制器和PCI总线之间。系统I / O控制器使用PCI总线的电接口将DMA控制信息从DMA控制器传送到DMA代理。 PCI总线的电接口包括多个地址线和耦合到DMA代理的授权信号线，其中I / O控制器在断言授权信号线的同时向DMA代理发送DMA控制信息的系统。

4. 发明授权

US5909696A Method and apparatus for caching system management mode information with other information 失效
标题翻译：用其他信息缓存系统管理模式信息的方法和装置
公开(公告)号：US5909696A
公开(公告)日：1999-06-01
申请号：US656922
申请日：1996-06-04
申请人： Dennis Reinhardt , James P. Kardach , John W. Horigan , Neil Songer , Andrew F. Glew
发明人： Dennis Reinhardt , James P. Kardach , John W. Horigan , Neil Songer , Andrew F. Glew
IPC分类号： G06F9/48 , G06F12/02 , G06F12/06 , G06F12/08 , G06F12/14 , G06F13/14
CPC分类号： G06F12/1491 , G06F12/0802 , G06F12/0284 , G06F12/1441 , G06F12/1475
摘要： A novel method and apparatus to cache System Management Mode (SMM) data with other data to improve performance and reduce latency of SMM handler routines. This method and apparatus allows SMM data and non-SMM data to be distinguished in the cache without requiring extra cache bits which can add to the cost of implementation. Since SMM data and non-SMM data can coexist in the cache, there is no need for time consuming cache flush cycles when switching between the two modes. Since SMM data can be cached, performance of SMM routines are improved. This method and apparatus defines the SMRAM address range to be a range of addresses representable by the tag, but not directly corresponding to installed main memory. When accesses are made to SMRAM addresses, they are redirected to an unused portion of main memory. Protection mechanisms may be implemented to limit access to these SMRAM addresses when not in SMM.
摘要翻译：一种用于将系统管理模式（SMM）数据与其他数据进行缓存的新方法和装置，以提高性能并减少SMM处理程序的等待时间。该方法和装置允许在高速缓存中区分SMM数据和非SMM数据，而不需要增加执行成本的额外的缓存位。由于SMM数据和非SMM数据可以在高速缓存中共存，因此在两种模式之间切换时不需要耗时的高速缓存刷新周期。由于可以缓存SMM数据，因此提高了SMM例程的性能。该方法和装置将SMRAM地址范围定义为标签可表示的地址范围，但不直接对应于已安装的主存储器。当对SMRAM地址进行访问时，它们被重定向到主存储器的未使用部分。当不在SMM中时，可以实施保护机制来限制对这些SMRAM地址的访问。

5. 发明授权

US5465367A Slow memory refresh in a computer with a limited supply of power 失效
标题翻译：在电力供应有限的电脑中缓慢的内存刷新
公开(公告)号：US5465367A
公开(公告)日：1995-11-07
申请号：US277771
申请日：1994-07-19
申请人： Chandrashekar M. Reddy , Scott D. Hirose , Sung-Soo Cho , James P. Kardach , Steven M. Farrer , Meeling Roberts
发明人： Chandrashekar M. Reddy , Scott D. Hirose , Sung-Soo Cho , James P. Kardach , Steven M. Farrer , Meeling Roberts
IPC分类号： G06F1/04 , G06F1/32 , G06F15/78 , G11C11/401 , G11C11/406
CPC分类号： G06F1/3275 , G06F1/3203 , G11C11/406 , Y02B60/1228 , Y02B60/32
摘要： A power suspend mode activates a slow DRAM refresh in a computer system with a limited source of power. The power suspend mode reduces the power consumed by the computer system while preserving the contents of memory. The cyclic refresh of DRAM using a slow refresh clock substantially reduces the power consumed while the computer is suspended. This technique is particularly useful for battery powered portable computer systems. When an external or internal condition causes the computer system to transition to a power down mode, an IO subsystem notifies the CPU which sets control bits in the IO subsystem and a video subsystem. The IO subsystem then begins to generate a slow DRAM refresh pulse. Once the CPU and video subsystem sense the power suspend mode activation, the system memory and video memory are refreshed using the slow refresh clock. The power consumed during the refresh process is thereby greatly reduced. When a resume signal is received by the IO subsystem, the slow refresh clock is terminated and the system memory and video memory are again refreshed using a normal faster clock.
摘要翻译：电源暂停模式激活计算机系统中具有有限电源的缓慢的DRAM刷新。电源挂起模式减少了计算机系统消耗的功耗，同时保留了内存的内容。使用慢刷新时钟的DRAM的循环刷新大大降低了计算机暂停时消耗的功率。这种技术对于电池供电的便携式计算机系统特别有用。当外部或内部条件导致计算机系统转换到掉电模式时，IO子系统通知CPU，该CPU为IO子系统和视频子系统设置控制位。 IO子系统然后开始产生缓慢的DRAM刷新脉冲。一旦CPU和视频子系统检测到电源暂停模式激活，系统内存和视频存储器将使用缓慢的刷新时钟刷新。因此，刷新过程中消耗的功率大大降低。当IO子系统接收到恢复信号时，缓慢的刷新时钟被终止，系统存储器和视频存储器将使用正常的更快的时钟再次刷新。

6. 发明授权

US5889964A Method and apparatus for docking and undocking a notebook computer to and from a docking station while the notebook computer is in an active state 失效
标题翻译：当笔记本计算机处于活动状态时，用于将笔记本计算机与对接站对准和脱离坞的方法和装置
公开(公告)号：US5889964A
公开(公告)日：1999-03-30
申请号：US754399
申请日：1996-11-21
申请人： Sung-Soo Cho , Feng Deng , Pranav S. Shah , Diane Bryant , James P. Kardach
发明人： Sung-Soo Cho , Feng Deng , Pranav S. Shah , Diane Bryant , James P. Kardach
IPC分类号： G06F1/16 , G06F13/40 , G06F13/00
CPC分类号： G06F1/1632 , G06F13/4081 , Y02B60/1228 , Y02B60/1235
摘要： Prior art quiet docking and undocking methods used an interface that was located within the notebook computer, thus adding to the complexity, weight, and power consumption of the notebook computer. The present invention provides for a method for quiet docking and undocking of a notebook computer using interface circuitry located within the docking station. Moreover, the method of the present invention provides for docking and undocking whether the notebook computer is in a powered-on or suspend mode. The notebook computer is docked and undocked to the docking station such that any transaction occurring on the system bus during the docking/undocking sequence is not affected.
摘要翻译：现有技术的安静对接和脱离方法使用位于笔记本计算机内的接口，从而增加了笔记本计算机的复杂性，重量和功率消耗。本发明提供一种用于使用位于对接站内的接口电路来使笔记本计算机安静地对接和脱离连接的方法。此外，本发明的方法提供对接和脱离笔记本计算机是否处于通电或挂起模式。笔记本电脑停靠在对接站上，使得在对接/取消连接顺序期间在系统总线上发生的任何事务都不受影响。

7. 发明授权

US5862389A Method and apparatus for selectively invoking a particular interrupt service routine for a particular interrupt request 失效
标题翻译：用于选择性地调用特定中断请求的特定中断服务程序的方法和装置
公开(公告)号：US5862389A
公开(公告)日：1999-01-19
申请号：US778516
申请日：1997-01-03
申请人： James P. Kardach , Sung Soo Cho , Jayesh M. Joshi
发明人： James P. Kardach , Sung Soo Cho , Jayesh M. Joshi
IPC分类号： G06F9/48 , G06F13/24
CPC分类号： G06F9/4812 , G06F13/24
摘要： A circuit for selectively invoking a particular interrupt service routine to handle a particular interrupt request. The present invention includes a programmable register with one or more bits per interrupt request input. The present invention also includes interrupt selection logic which outputs a particular interrupt in response to an interrupt request input and data stored in the programmable register. The interrupt then invokes the associated interrupt service routine to handle the interrupt request. The present invention is used to choose the interrupt service routine to handle a particular interrupt request from any source within the computer system in any computer system operating mode.
摘要翻译：用于选择性地调用特定中断服务程序来处理特定中断请求的电路。本发明包括一个可编程寄存器，每个中断请求输入具有一个或多个位。本发明还包括响应于中断请求输入和存储在可编程寄存器中的数据输出特定中断的中断选择逻辑。然后中断调用相关的中断服务程序来处理中断请求。本发明用于在任何计算机系统操作模式中选择中断服务程序来处理来自计算机系统内的任何源的特定中断请求。

8. 发明授权

US5862349A Method and apparatus for docking and undocking a notebook computer 失效
标题翻译：用于对接和脱离笔记本电脑的方法和装置
公开(公告)号：US5862349A
公开(公告)日：1999-01-19
申请号：US754400
申请日：1996-11-21
申请人： Sung-Soo Cho , Diane M. Bryant , James P. Kardach , Feng Deng
发明人： Sung-Soo Cho , Diane M. Bryant , James P. Kardach , Feng Deng
IPC分类号： G06F13/12 , G06F1/16 , G06F3/00 , G06F13/40 , H01J3/00
CPC分类号： G06F13/4081 , G06F1/1632 , Y02B60/1228 , Y02B60/1235
摘要： Prior art quiet docking and undocking methods used an interface that was located within the notebook computer, thus adding to the cost, complexity, weight, and power consumption of the notebook computer. The present invention provides for an apparatus for quiet docking of a notebook computer to a docking station, including interface circuitry located within the docking station. The interface detects when the notebook computer has been inserted within the docking station, and correspondingly enables a switch such that a common system bus is coupled between the notebook computer and the docking station. The interface also generates events to allow a software routine to configure the notebook computer and docking station without prior user intervention. The interface also includes circuitry to detect an undock request, and correspondingly undock the computer such that a transaction occurring on the system bus is not affected.
摘要翻译：现有技术的安静对接和脱离方法使用位于笔记本计算机内的接口，从而增加笔记本计算机的成本，复杂性，重量和功率消耗。本发明提供了一种用于将笔记本计算机安静地对接到对接站的装置，包括位于坞站内的接口电路。该接口检测笔记本计算机何时被插入对接站内，并且相应地启用开关，使得公共系统总线耦合在笔记本计算机和对接站之间。该界面还生成事件，以允许软件程序配置笔记本电脑和扩展坞，无需用户干预。接口还包括检测未停靠请求的电路，并相应地使计算机取消停靠，使得系统总线上发生的事务不受影响。

9. 发明授权

US5798951A Method and apparatus for automatic un-preconditioned insertion/removal capability between a notebook computer and a docking station 失效
标题翻译：笔记本电脑和对接站之间的自动预处理插入/移除能力的方法和装置
公开(公告)号：US5798951A
公开(公告)日：1998-08-25
申请号：US580933
申请日：1995-12-29
申请人： Sung-Soo Cho , James P. Kardach , Diane M. Bryant
发明人： Sung-Soo Cho , James P. Kardach , Diane M. Bryant
IPC分类号： G06F1/16 , G06F1/24
CPC分类号： G06F1/1632 , G06F1/24
摘要： A system having a portable computer, a docking station and an interface coupled between the portable computer and the docking station that is responsive to unpreconditioned insertion or removal of the portable computer into or from the docking station respectively. When the portable computer is being inserted into or removed from the docking station, the interface generates events to allow software to configure (e.g., precondition) the portable computer and the docking station without prior user intervention.
摘要翻译：一种具有便携式计算机，坞站和耦合在便携式计算机和对接站之间的接口的系统，其响应于便携式计算机分别插入或取出对接站的无条件插入或移除。当便携式计算机被插入或从对接站移除时，接口生成事件以允许软件在没有用户干预的情况下配置（例如，预条件）便携式计算机和坞站。

10. 发明授权

US09865233B2 Hybrid graphics display power management 有权
公开(公告)号：US09865233B2
公开(公告)日：2018-01-09
申请号：US12346759
申请日：2008-12-30
申请人： Seh W. Kwa , James P. Kardach
发明人： Seh W. Kwa , James P. Kardach
IPC分类号： G09G5/36 , G09G5/00
CPC分类号： G09G5/36 , G09G5/003 , G09G2320/103 , G09G2330/021 , G09G2360/06 , G09G2360/10 , G09G2360/18
摘要： Some embodiments describe techniques that relate to hybrid graphics display power management. In one embodiment, data corresponding to one or more image frames of a video stream are stored in a local frame buffer. A display device (e.g., an LCD) may then be driven based on the stored data in the local frame buffer or a video stream from a graphics controller. Other embodiments are also described.

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