公开(公告)号：US4262359A

公开(公告)日：1981-04-14

申请号：US827666

申请日：1959-07-16

Applicant: William E. Cory ,  Allen B. Cunningham

Inventor： William E. Cory ,  Allen B. Cunningham

IPC: H04L9/00

CPC classification number: H04L9/00 ,  H04L9/12 ,  H04L2209/08

Abstract: 2. For use with a cryptographic teletype transmission system having a relay for transferring teletype characters to an encyphering transmitter, a decyphering receiver and a teletype printer, a security system comprising a generator for producing an auxiliary teletype character, circuit means responsive to the failure of transfer of a valid teletype character to said transmitter to activate said generator to supply an auxiliary character to said transmitter, a clamp circuit responsive to activation of said generator to inhibit transfer of a valid character to said transmitter until said auxiliary character has been completed, a transfer system for transferring the decyphered characters from the receiver to the printer, storage means for storing a plurality of successive teletype characters, a recognition circuit responsive to the presence of said auxiliary teletype character in said storage means for inhibiting printing of said auxiliary teletype character.

Abstract translation: 2.用于具有用于将电传字符传送到密码发送器，解密接收器和电传打印机的中继器的加密电传传输系统，包括用于产生辅助电传字符的发生器的安全系统，响应于故障的电路装置 将有效的电传字符转移到所述发射机以激活所述发生器以向所述发射机提供辅助字符，钳位电路响应于所述发生器的激活以禁止有效字符传输到所述发射机直到所述辅助字符已经完成， 用于将解密字符从接收器传送到打印机的存储装置，用于存储多个连续电传字符的存储装置，响应所述存储装置中存在所述辅助电传字符的识别电路，用于禁止所述辅助电传字符的打印。

公开(公告)号：US4034333A

公开(公告)日：1977-07-05

申请号：US617762

申请日：1975-09-29

Applicant: Allen B. Cunningham

Inventor： Allen B. Cunningham

IPC: G01V1/04 ,  G01V1/36 ,  G01V1/02

CPC classification number: G01V1/364 ,  G01V1/04 ,  G01V2210/32

Abstract: A monochromatic interference signal is removed from seismic data records by transmitting into the earth a seismic signal having a null component in its power spectrum at substantially the frequency of the interference signal. When cross-correlation techniques are used to determine subsurface characteristics, the cross-correlation product of the detected signal with the transmitted signal will contain a substantially zero component at the frequency of the interference signal.

Abstract translation: 通过以大体上干扰信号的频率向地球传输具有其功率谱中的零分量的地震信号，从地震数据记录中去除单色干扰信号。 当使用互相关技术来确定地下特性时，检测信号与发射信号的互相关乘积将在干扰信号的频率处包含基本为零的分量。

公开(公告)号：US4698791A

公开(公告)日：1987-10-06

申请号：US875144

申请日：1986-06-17

Applicant: Allen B. Cunningham

Inventor： Allen B. Cunningham

IPC: G01V1/46 ,  G01V1/40

CPC classification number: G01V1/46

Abstract: An acoustic well logging method employing a tool having at least two acoustic transmitters and at least two acoustic receivers. In a preferred embodiment, one receiver is positioned midway between the two transmitters, and the other receiver is spaced from the first receiver along the longitudinal axis of the tool between the transmitters. Two signals, each representing an acoustic wave that has propagated from a transmitter through a portion of the formation surrounding the borehole to a receiver, are recorded when the tool is in each of two positions relative to the longitudinal axis of the well. In each of the tool positions, one recorded signal is associated with the midpoint receiver and the other with another receiver. From the four recorded signals, a new signal is generated. This derived signal has Fourier amplitude spectrum indicative of the formation parameters, but is independent of components associated with the transmitters and receivers. Thus the method results in amplitude information that is neither corrupted by variations in the sensitivity between the various receivers and transmitters, nor by variations in sensitivity of any individual transducer over time. In an alternative preferred embodiment, the positions of the transmitters and receivers in the tool are interchanged. In variations on the preferred embodiments, three or more pairs of recorded signals are generated.

Abstract translation: 声学测井方法采用具有至少两个声发射器和至少两个声学接收器的工具。 在优选实施例中，一个接收器位于两个发射器之间的中间位置，另一个接收器沿着工具在发射器之间的纵向轴线与第一接收器间隔开。 当工具位于相对于井的纵向轴线的两个位置中的每一个中时，记录两个信号，每个信号表示已经从发射机传播通过围绕钻孔的地层的一部分到接收器的声波。 在每个工具位置中，一个记录的信号与中点接收器相关联，另一个与另一个接收器相关联。 从四个记录的信号中，产生新的信号。 该导出信号具有表示形成参数的傅里叶振幅谱，但与发射机和接收机相关的分量无关。 因此，该方法产生的振幅信息既不会因各种接收器和发射器之间的灵敏度的变化而损坏，也不会随着时间的推移而变化。 在替代的优选实施例中，工具中的发射器和接收器的位置被互换。 在优选实施例的变型中，产生三对或更多对记录信号。

公开(公告)号：US4069470A

公开(公告)日：1978-01-17

申请号：US708675

申请日：1976-07-26

Applicant: Allen B. Cunningham ,  Edward T. Miller

Inventor： Allen B. Cunningham ,  Edward T. Miller

IPC: G01V1/00 ,  G01V1/14

CPC classification number: G01V1/005

Abstract: A seismic signal is generated having a pattern which is periodically repetitive. The signal within each period has a nonrepetitive pattern and each period has a time duration not less than the time required for the seismic wave to travel to the deepest subsurface strata of interest and back to the detecting location.

Abstract translation: 产生具有周期性重复的图案的地震信号。 每个周期内的信号具有非重复性模式，并且每个周期的持续时间不得少于地震波行进到感兴趣的最深的地下层并返回到检测位置所需的时间。