公开(公告)号：US07324007B2

公开(公告)日：2008-01-29

申请号：US10499299

申请日：2002-12-27

申请人： Carl B. Sunderman ,  Jeffrey Craig Johnson ,  Steve P. Signer

发明人： Carl B. Sunderman ,  Jeffrey Craig Johnson ,  Steve P. Signer

IPC分类号： G08B21/00

CPC分类号： E21D21/02 ,  E21F17/185

摘要： A rock bolt includes a hollow body and a gap along a length of the hollow body. At least one strain gauge is affixed to an inner surface of the rock bolt and is accessible from the gap. The rock bolt may include a data logger within the hollow body and coupled to receive signals from one or more strain gauges, and to record these signals in a memory. The data logger may comprise a data port adapted to be accessible from the outside of a bore hole into which the rock bolt is inserted. The data logger also may include at least one of a visual and auditory alarm. A graphic user interface software program can be used to download data from the data logger and set certain operating parameters of the data logger.

摘要翻译： 岩石螺栓包括中空体和沿着中空体的长度的间隙。 至少一个应变计固定在岩石锚杆的内表面上并且可从间隙接近。 岩石螺栓可以包括在中空本体内的数据记录器，并被耦合以接收来自一个或多个应变计的信号，并将这些信号记录在存储器中。 数据记录器可以包括适于从插入岩石螺栓的钻孔的外部进入的数据端口。 数据记录器还可以包括视觉和听觉报警中的至少一个。 图形用户界面软件程序可用于从数据记录器下载数据，并设置数据记录器的某些操作参数。

公开(公告)号：US07251455B1

公开(公告)日：2007-07-31

申请号：US11178861

申请日：2005-07-11

申请人： Vaughn Lee Mower ,  Roy Fletcher Lunsford ,  Ryan Clark Beard ,  Jeffrey Craig Wright

发明人： Vaughn Lee Mower ,  Roy Fletcher Lunsford ,  Ryan Clark Beard ,  Jeffrey Craig Wright

IPC分类号： H04B15/00 ,  H04B7/14 ,  H04M1/00

CPC分类号： H01Q1/1257

摘要： A method estimates a signal to noise ratio (SNR) of a received direct sequence spread spectrum (DSSS) signal. Using the estimated SNR, a control signal is determined that is suitable for modifying a position of a directional antenna. The control signal may be used to modify the position of the directional antenna. In another method, a first estimated SNR is determined for a received radio frequency (RF) signal. An output voltage of an AGC circuit is converted to a second estimated SNR. Using at least the first estimated SNR when the first estimated SNR is within a first range and using at least the second estimated SNR when the second estimated SNR is within a second range, an output SNR is determined. The output SNR may be used to determine the at least one control signal, which may then be used to modify the position of the directional antenna.

摘要翻译： 一种方法估计接收的直接序列扩频（DSSS）信号的信噪比（SNR）。 使用估计的SNR，确定适于修改定向天线的位置的控制信号。 控制信号可用于修改定向天线的位置。 在另一种方法中，为接收的射频（RF）信号确定第一估计SNR。 AGC电路的输出电压被转换为第二估计SNR。 当第一估计SNR在第一范围内时，至少使用第一估计SNR，并且当第二估计SNR在第二范围内时至少使用第二估计SNR，确定输出SNR。 输出SNR可以用于确定至少一个控制信号，然后可以使用该控制信号来修改定向天线的位置。

公开(公告)号：US07246268B2

公开(公告)日：2007-07-17

申请号：US10051833

申请日：2002-01-16

申请人： Jeffrey Craig ,  John S. Mangan

发明人： Jeffrey Craig ,  John S. Mangan

IPC分类号： G06F11/00

CPC分类号： G11C29/765 ,  G06F12/0246 ,  G06F2212/7205 ,  G11C16/349

摘要： Methods and apparatus for automatically detecting when a memory system has significantly degraded are disclosed. According to one aspect of the present invention, a method for determining a status associated with a memory system which includes a plurality of sectors includes updating a counter, comparing the counter to a threshold value, and generating an appropriate indication when comparing the counter to the threshold value yields a first result. The counter is updated each time a sector is reassigned, and indicates a number of sectors remaining in the memory system. The threshold value indicates a number of sectors which are yet to be reassigned in order for the memory system to be considered as useable, or reliable. The indication is generated when comparing the counter to the threshold value yields a first result to indicate that the memory system is substantially near a failure condition.

摘要翻译： 公开了一种自动检测存储系统何时显着劣化的方法和装置。 根据本发明的一个方面，一种用于确定与包括多个扇区的存储器系统相关联的状态的方法包括：更新计数器，将计数器与阈值进行比较，以及当将计数器与 阈值产生第一个结果。 每次重新分配扇区时，计数器都会更新，并指示存储系统中剩余的扇区数。 阈值指示尚未被重新分配的扇区数，以使存储器系统被认为是可用的或可靠的。 当将计数器与阈值进行比较时产生指示，产生第一结果以指示存储器系统基本上接近故障状态。

公开(公告)号：USD422830S

公开(公告)日：2000-04-18

申请号：US97486

申请日：1998-12-08

申请人： Jeffrey Craig Cothren ,  Jeffrey A. Kalatsky

设计人： Jeffrey Craig Cothren ,  Jeffrey A. Kalatsky

公开(公告)号：US5438573A

公开(公告)日：1995-08-01

申请号：US252052

申请日：1994-06-01

申请人： John S. Mangan ,  Robert D. Norman ,  Jeffrey Craig ,  Richard Albert ,  Anil Gupta ,  Jeffrey D. Stai ,  Karl M. J. Lofgren

发明人： John S. Mangan ,  Robert D. Norman ,  Jeffrey Craig ,  Richard Albert ,  Anil Gupta ,  Jeffrey D. Stai ,  Karl M. J. Lofgren

IPC分类号： G06F3/06 ,  G06F11/10 ,  G11C16/10 ,  G11C29/00

CPC分类号： G11C29/765 ,  G06F3/0601 ,  G11C16/102 ,  G06F11/1068 ,  G06F2003/0694

摘要： A file structure employed in a flash electrically erasable and programmable read only memory ("EEPROM") system and aspects of forming and using certain data fields within such a file structure. An array of rows and columns of EEPROM memory cells is divided into blocks of cells that are separately addressable for the purpose of erasing an entire block of cells at the same time. Each block contains several rows of cells with certain columns thereof storing a sector of data, typically 512 bytes of data, and other columns of cells within the same rows being used as spare cells to replace any defective sector data cells and store overhead (header) information about the block and the data sector. Such overhead information includes pointers to locations of any defective sector data cells within the block, whether the block has been mapped out in favor of another block, error correction codes for the sector data and the header information, and other similar types of information.