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    • 2. 发明授权
    • Method and apparatus for distinguishing between diskettes in a diskette
drive
    • 用于区分软盘驱动器中的软盘的方法和装置
    • US4709367A
    • 1987-11-24
    • US846340
    • 1986-03-31
    • Robert J. GrafeSteven T. Pancoast
    • Robert J. GrafeSteven T. Pancoast
    • G06F3/06G06F12/00G11B20/18G06F11/10G11B5/02
    • G06F3/0601G06F2003/0697
    • A method and apparatus are disclosed for enabling a diskette drive system to distinguish between diskettes and verify that the diskette currently in the drive is the correct one. Each diskette contains a file allocation table for controlling the allocation and deallocation of storage space on the diskette. Each time that the file allocation table on a diskette is accessed, i.e., read or written, a cyclic redundancy check (CRC) value for the file allocation table is calculated and stored. When checking the validity of a diskette, i.e., that the correct diskette is in the drive, a CRC value for the file allocation table of the currently loaded diskette is calculated and compared to the most recently stored CRC value. If the most recently calculated CRC value does not match the most recently stored CRC value, then this is an indication that the wrong diskette is currently in the diskette drive. A warning is then provided to the system user to change diskettes before a read or a write operation will be commenced.
    • 公开了一种用于使软盘驱动器系统能够区分软盘并验证当前在驱动器中的软盘是否正确的方法和装置。 每个软盘包含一个文件分配表,用于控制磁盘上的存储空间的分配和释放。 每次访问软盘上的文件分配表,即读取或写入时,计算并存储用于文件分配表的循环冗余校验(CRC)值。 当检查软盘的有效性,即正确的软盘在驱动器中时,计算当前加载的软盘的文件分配表的CRC值,并将其与最近存储的CRC值进行比较。 如果最近计算出的CRC值与最近存储的CRC值不匹配,那么这表明错误的软盘当前在软盘驱动器中。 然后,在开始读取或写入操作之前,向系统用户提供警告以更换软盘。
    • 3. 发明授权
    • Method of and system for updating a display unit
    • 用于更新显示单元的方法和系统
    • US5255361A
    • 1993-10-19
    • US680218
    • 1991-04-04
    • Janet R. CallawayJohn M. McConaughySteven T. PancoastJoan M. Thompson
    • Janet R. CallawayJohn M. McConaughySteven T. PancoastJoan M. Thompson
    • G06F3/14G06F15/62
    • G06F3/1415
    • This invention relates to updating a display unit associated with a remote computer system communicating with a host computer system. Information, which is currently being displayed on the display unit and information to be displayed thereon are compared to determine any differences which exist therebetween. If the differences exceed a predetermined value, a update command is generated and transmitted by the host computer system to the remote computer system along with the information to be displayed if facilitate the updating of the display unit. If the differences do not exceed the predetermined value, it is determined which of a plurality change categories should be used to transmit the differences to the remote system in the most efficient manner. An update command, which is associated with the selected one of the plurality of change categories, and data representing the differences are then enqueued for transmission to the remote system to facilitate the updating of the display unit.
    • 本发明涉及更新与与主计算机系统通信的远程计算机系统相关联的显示单元。 将当前正在显示在显示单元上的信息和要在其上显示的信息进行比较以确定其间存在的任何差异。 如果差异超过预定值,则如果促进显示单元的更新,则主计算机系统生成更新命令以及要显示的信息与远程计算机系统一起发送。 如果差异不超过预定值,则确定应以哪种多个改变类别以最有效的方式将差异发送到远程系统。 然后将与多个更改类别中的所选择的一个更改类别相关联的更新命令和表示差异的数据排队以便传输到远程系统以便于显示单元的更新。
    • 7. 发明授权
    • Desk top computer system having multi-level power management
    • 台式电脑系统具有多级电源管理功能
    • US5548763A
    • 1996-08-20
    • US97251
    • 1993-07-26
    • James L. CombsDwayne T. CrumpSteven T. Pancoast
    • James L. CombsDwayne T. CrumpSteven T. Pancoast
    • G06F1/32G06F9/445G06F9/46G06F11/14G06F12/16
    • G06F1/325G06F1/3203G06F9/4418
    • A computer system having four states of power management: a normal operating state, a standby state, a suspend state, and an off state. The standby state is characterized by devices, such as a video controller and a hard drive, being placed into a low-power mode transparent to the operating system and the applications executing on the computer system. The suspend state is characterized by executing code being interrupted and the state of the computer system being saved to a file on the hard drive in such a manner that system power may be removed after the state of the computer system is saved to the hard drive. Later, after system power is restored, the state of the computer system is resumed by reading from the hard drive and loading it in such a manner that the operating system and application programs are not adversely affected. The normal operating state and the off state correspond to the typical on and off states of more conventional computer systems. The suspend/resume/standby feature is implemented at a low cost using many standard components.
    • 具有四种电源管理状态的计算机系统:正常操作状态,待机状态,暂停状态和关闭状态。 待机状态的特征在于诸如视频控制器和硬盘驱动器之类的设备被置于对操作系统透明的低功率模式以及在计算机系统上执行的应用。 暂停状态的特征在于执行代码被中断,并且将计算机系统的状态保存到硬盘驱动器上的文件,使得在将计算机系统的状态保存到硬盘驱动器之后可以去除系统电源。 之后,在恢复系统电源之后,通过从硬盘驱动器读取并以不影响操作系统和应用程序的方式加载计算机系统的状态来恢复。 正常操作状态和关闭状态对应于更传统的计算机系统的典型开启和关闭状态。 暂停/恢复/待机功能使用许多标准组件以低成本实现。
    • 8. 发明授权
    • Performing system tasks at power-off using system management interrupt
    • 使用系统管理中断执行关机时的系统任务
    • US5511204A
    • 1996-04-23
    • US301464
    • 1994-09-07
    • Dwayne T. CrumpSteven T. PancoastJohn M. LandryPaul H. Benson, IV
    • Dwayne T. CrumpSteven T. PancoastJohn M. LandryPaul H. Benson, IV
    • G06F1/00G06F1/30G06F9/48G06F1/32
    • G06F1/30
    • A computer system having a CPU, a non-volatile storage device, a power management processor having a volatile power management configuration, and a power supply in circuit communication. The power management processor controls the regulation of power to the CPU by the power supply. Prior to causing the power supply to cease providing regulated power to the CPU, the power management processor interrupts the CPU via a system management interrupt. Responsive to being interrupted via the system management interrupt, the CPU performs tasks associated with the power supply imminently ceasing to provide regulated power to the CPU. Such tasks include writing data to non-volatile memory and refreshing an alarm value in the power management processor. The CPU can extend the period of time before the power management processor causes the power supply to cease providing regulated power to the CPU while the CPU performs the necessary tasks.
    • 一种具有CPU,非易失性存储装置,具有易失性电源管理配置的电源管理处理器和电路通信中的电源的计算机系统。 电源管理处理器通过电源控制CPU的电源调节。 在使电源停止向CPU提供稳压电源之前,电源管理处理器通过系统管理中断中断CPU。 响应于通过系统管理中断中断,CPU执行与电源相关的任务即将停止向CPU提供稳压电源。 这样的任务包括将数据写入非易失性存储器并刷新电源管理处理器中的报警值。 在CPU执行必要任务之前,CPU可以延长电源管理处理器使电源停止向CPU提供稳定电源的时间段。
    • 10. 发明授权
    • Multifunction power switch and feedback led for suspend systems
    • 多功能电源开关和反馈引导用于悬挂系统
    • US5630142A
    • 1997-05-13
    • US302147
    • 1994-09-07
    • Dwayne T. CrumpSteven T. PancoastDuane E. NorrisPaul H. Benson, IV
    • Dwayne T. CrumpSteven T. PancoastDuane E. NorrisPaul H. Benson, IV
    • G06F1/00G06F1/26G06F1/32G06F11/14
    • G06F1/3203G06F1/325
    • A computer system having four states of power management: a normal operating state, a standby state, a suspend state, and an off state. A control unit controls transitions between the various states. The standby state is characterized by devices, such as a video controller and a hard drive, being placed into a low-power mode transparent to the operating system and the applications executing on the computer system. The suspend state is characterized by executing code being interrupted and the state of the computer system being saved to a file on the hard drive in such a manner that system power may be removed after the state of the computer system is saved to the hard drive. Later, after system power is restored, the state of the computer system is resumed by reading from the hard drive and loading it in such a manner that the operating system and application programs are not adversely affected. The normal operating state and the off state correspond to the typical on and off states of more conventional computer systems. A single switch causes transitions between the various states. A visual feedback device, such as an LED is used to indicate the state of the computer system. While no power management driver is active, the control unit delays state transitions until a suitable power management driver is active.
    • 具有四种电源管理状态的计算机系统:正常操作状态,待机状态,暂停状态和关闭状态。 控制单元控制各种状态之间的转换。 待机状态的特征在于诸如视频控制器和硬盘驱动器之类的设备被置于对操作系统透明的低功率模式以及在计算机系统上执行的应用。 暂停状态的特征在于执行代码被中断,并且将计算机系统的状态保存到硬盘驱动器上的文件,使得在将计算机系统的状态保存到硬盘驱动器之后可以去除系统电源。 之后,在恢复系统电源之后,通过从硬盘驱动器读取并以不影响操作系统和应用程序的方式加载计算机系统的状态来恢复。 正常操作状态和关闭状态对应于更传统的计算机系统的典型开启和关闭状态。 单个开关导致各种状态之间的转换。 诸如LED的视觉反馈装置用于指示计算机系统的状态。 当没有电源管理驱动程序激活时,控制单元延迟状态转换,直到合适的电源管理驱动程序处于活动状态。