公开(公告)号：WO1988010093A1

公开(公告)日：1988-12-29

申请号：PCT/US1988002096

申请日：1988-06-20

Applicant: NICOLET INSTRUMENT CORPORATION

Inventor： NICOLET INSTRUMENT CORPORATION ,  MARTENS, Wim, L., J. ,  KAP, Jaap, I.

IPC: A61B05/04

CPC classification number: A61B5/0476 ,  A61B5/0488 ,  A61B5/0496 ,  A61B5/4809 ,  A61B5/4812 ,  A61B5/4818 ,  A61B5/7257 ,  A61B5/7264 ,  Y10S128/92 ,  Y10S706/924

Abstract: A system (10) includes multiple input channels (11, 12, 13, 14) for receiving physiological signals such as those from EEG, EMG, and EOG electrodes. The physiological signals are digitized in an analog to digital converter (15) and the digital data are supplied to compute controller which stores data and which, on the real time basis, performs the initial feature extraction, pattern detection and classification steps. The controller includes central processing unit (19) with associated storage means (20, 21, 26, 27, 28), display (CRT) (34), keyboard and/or mouse (31, 32). The system (10) gathers data over relatively long period of time and displays to a user a continuous updated analysis of the physiological information. The raw data is simultaneously stored for later retrieval. Upon the completion of the tests, the operator can interact with the system and ca re-analyse the data based on his judgments.

Abstract translation: 系统（10）包括用于接收诸如来自EEG，EMG和EOG电极的生理信号的多个输入通道（11,12,13,14）。 生理信号在模数转换器（15）中被数字化，数字数据被提供给存储数据的计算控制器，并且实时地执行初始特征提取，模式检测和分类步骤。 控制器包括具有相关联的存储装置（20,21,26,27,28），显示器（CRT）（34），键盘和/或鼠标（31,32）的中央处理单元（19）。 系统（10）在相当长的时间段内收集数据，并向用户显示生理信息的连续更新分析。 同时存储原始数据供以后检索。 测试完成后，操作员可以与系统进行交互，并根据他的判断对数据进行重新分析。

公开(公告)号：WO1986006831A1

公开(公告)日：1986-11-20

申请号：PCT/US1986000522

申请日：1986-03-17

Applicant: NICOLET INSTRUMENT CORPORATION

Inventor： NICOLET INSTRUMENT CORPORATION ,  ANDERSON, Charles, R.

IPC: G01B09/02

CPC classification number: G01B9/02018

Abstract: Apparatus and method for converting a conventional Michelson interferometer into a high resolution double-pass interferometer. The Michelson interferometer includes means (14) for dividing an incident beam of radiation into first and second beams, means (10, 12) for propagating the first and second beams through first and second optical paths (18, 20), respectively, means (14) for recombining the first and second beams to form an output beam of radiation, and means (26) for detecting an interference pattern in the output beam of radiation. The improvement comprises a beam splitter (32) which is positioned to return a portion of the output beam of radiation to the interferometer as an incident beam of radiation, and a bandpass filter (34) which is positioned between the beam splitter (32) and the detector (26) to filter from the output beam of radiation a portion which has been twice passed through the interferometer.

公开(公告)号：WO1993014373A1

公开(公告)日：1993-07-22

申请号：PCT/US1992011298

申请日：1992-12-30

Applicant: NICOLET INSTRUMENT CORPORATION

Inventor： NICOLET INSTRUMENT CORPORATION ,  COFFIN, John

IPC: G01B09/02

CPC classification number: G02B7/1827 ,  F16C33/16 ,  G01J3/0202 ,  G01J3/06 ,  G01J3/4535

Abstract: A bearing for allowing the movement of a movable mirror in a Michelson interferometer (1) includes a stationary hollow glass cylinder (7) and a movable assembly (10, 11, 16) which includes the movable mirror (17) and at least one graphite member (10, 11), the graphite member (10, 11) being slidably disposed within the bore of the glass cylinder (7). Preferably, there is an anti-rotation system for the movable assembly which includes a post (67) coupled with the movable assembly, a magnet (66) mounted on one end of the post and a stationary guide rail (71) positioned substantially parallel to the axis of rotation of the movable assembly and at a predetermined radial distance from the movable assembly.

Abstract translation: 用于允许迈克尔逊干涉仪（1）中的可移动反射镜的移动的轴承包括固定中空玻璃圆筒（7）和可移动组件（10,11,16），其包括可移动反射镜（17）和至少一个石墨 构件（10,11），石墨构件（10,11）可滑动地设置在玻璃圆筒（7）的孔内。 优选地，存在用于可移动组件的防旋转系统，其包括与可移动组件联接的柱（67），安装在柱的一端的磁体（66）和基本上平行于 可移动组件的旋转轴线并且距可移动组件预定的径向距离。

公开(公告)号：WO1989004583A1

公开(公告)日：1989-05-18

申请号：PCT/US1988003950

申请日：1988-11-04

Applicant: NICOLET INSTRUMENT CORPORATION

Inventor： NICOLET INSTRUMENT CORPORATION ,  CUMMINS, Kenneth, L. ,  HECOX, Kurt, E. ,  WILLIAMSON, Malcolm, J.

IPC: H04R25/00

CPC classification number: H04R25/356 ,  H04R25/505 ,  H04R2225/43

Abstract: A hearing aid system utilizing digital signal processing is programmable to fit the hearing deficit of a particular user and adaptive to the sound environment to maximize the intelligibility of the desired audio signal relative to noise. A signal picked up from microphone (30) is amplified and filtered by preemphasis circuit (32) and converted to digital data through an 8-bit linear A-to-D converter (47). The processor (50) preferably performs spectral shaping on the data to match the user's preference and performs a non-linear adaptive amplification function on the digital data. The amplification gain function may include several piecewise linear sections, including a first section providing expansion up to a first knee (K1), a second section providing linear amplification from the first to a second knee (K2), and a third section providing compression for signals above the second knee to reduce the effect of over range signals and minimize loudness discomfort to the user.

公开(公告)号：WO1987004519A1

公开(公告)日：1987-07-30

申请号：PCT/US1987000163

申请日：1987-01-20

Applicant: NICOLET INSTRUMENT CORPORATION

Inventor： NICOLET INSTRUMENT CORPORATION ,  HUANG, Yuchi ,  HOERNING, Jeffrey, Mark

IPC: G01J05/04

CPC classification number: F25D3/10 ,  F25D19/006 ,  G01J5/061

Abstract: A radiation detection apparatus (10), such as for the detection of infrared radiation, is formed of inner and outer cylindrical stainless steel vessels (11, 19) with the inner vessel (19) supported from the top wall (13) of the outer vessel (11) by a thin, relatively long stainless steel tube (24). A heat transfer mounting member (33) is attached to the bottom of the inner vessel (19) and extends outwardly and then upwardly between and out of contact with the vessels to the position of a window opening within the outer vessel (11). A detector device (36) is affixed in good thermal contact with the mounting member (33) at the position of the window (17) and thus is maintained substantially at the temperature of the bottom surface of the inner vessel. The surfaces of the inner and outer vessels may be highly polished to prevent heat transfer to the inner vessel by infrared radiation. The use of stainless steel for the outer vessel also allows utilization of a vacuum port window structure (15) having a metal gasket (47) to minimize potential gas infiltration.

公开(公告)号：WO1990005436A1

公开(公告)日：1990-05-17

申请号：PCT/US1989005147

申请日：1989-11-09

Applicant: NICOLET INSTRUMENT CORPORATION

Inventor： NICOLET INSTRUMENT CORPORATION ,  WILLIAMSON, Malcolm, J. ,  BUSTAMANTE, Diane, K.

IPC: H04R25/00

CPC classification number: H04R25/453 ,  H04R25/505

Abstract: A hearing aid system utilizes a digital signal processor (50) which includes a filter (301) having filter coefficients that can be varied in order to suppress acoustic feedback between the microphone (30) and the receiver (40). A first technique for processing the signal includes varying the delay (308) of the data over time. A second technique involves adjusting the filter coefficients of digital filter (301) through filter estimator (303) which provides an optimal estimate of the current input sample based on past input samples. The output of the signal is subtracted from the input signal which provides for a difference signal which effectively cancels out resonant frequencies. The third technique involves providing both delayed data and the input data to the filter estimator (310) and filter (309), wherein the signal passed through feedback filter corresponds to the magnitude and phase of the acoustic feedback signal to thereby cancel the same.

Abstract translation: 助听器系统利用数字信号处理器（50），该数字信号处理器（50）包括滤波器（301），滤波器（301）可以改变滤波器系数，以便抑制麦克风（30）和接收器（40）之间的声反馈。 用于处理信号的第一技术包括随时间改变数据的延迟（308）。 第二技术涉及通过滤波器估计器（303）调整数字滤波器（301）的滤波器系数，滤波器估计器（303）基于过去的输入样本提供当前输入采样的最佳估计。 从输入信号中减去信号的输出，该输入信号提供有效地消除谐振频率的差分信号。 第三种技术涉及将延迟数据和输入数据提供给滤波器估计器（310）和滤波器（309），其中通过反馈滤波器的信号对应于声反馈信号的幅度和相位，从而消除它们。

公开(公告)号：WO1986004261A1

公开(公告)日：1986-07-31

申请号：PCT/US1985002478

申请日：1985-12-16

Applicant: NICOLET INSTRUMENT CORPORATION

Inventor： NICOLET INSTRUMENT CORPORATION ,  SPENCER, Robert, B.

IPC: B01D59/44

CPC classification number: H01J49/38

Abstract: Gaseous ions trapped within an analyzer cell (10) of an ion cyclotron resonance mass spectrometer are excited into resonance by a swept radio-frequency electric field having an envelope of trapezoidal shape. The envelope includes an onset region which ramps linearly from a zero level to a non-zero constant-amplitude level, a constant-amplitude region having the non-zero constant-amplitude level, and a termination region which ramps linearly from the constant-amplitude level to the zero level. The field has a generally constant-amplitude power spectrum and imparts relatively uniform energy to ions having natural cyclotron frequencies of interest.

公开(公告)号：WO1993024233A1

公开(公告)日：1993-12-09

申请号：PCT/FR1993000508

申请日：1993-05-25

Applicant: NICOLET INSTRUMENT CORPORATION ,  LE COMTE, Roger, Lucien ,  CHAMPSEIX, Henri ,  COUDERC, Guilhem, Louis

Inventor： NICOLET INSTRUMENT CORPORATION

IPC: B01L07/00

CPC classification number: B01L7/00 ,  G01N33/04

Abstract: A plurality of heat immersion tubes (13) are supported by a vertically displaceable stand (10). Said tubes are fitted to a bar (12), connected to the stand by vertical rotary rods (15) terminated by an eccentric (16). The rotating tubes simultaneously preheat several sample bottles (6) grouped in a rack (2) which is immobilized at the end of a feed table. Application in preliminary heating of dairy product samples.

公开(公告)号：WO1990005437A1

公开(公告)日：1990-05-17

申请号：PCT/US1989005148

申请日：1989-11-09

Applicant: NICOLET INSTRUMENT CORPORATION

Inventor： NICOLET INSTRUMENT CORPORATION ,  WILLIAMSON, Malcolm, J. ,  CUMMINS, Kenneth, L. ,  HECOX, Kurt, E.

IPC: H04R25/00

CPC classification number: H03G9/005 ,  H03G9/025 ,  H04R25/453 ,  H04R25/505 ,  H04R2225/43 ,  H04R2430/03

Abstract: A hearing aid system utilizes a digital signal processor (50) which includes a spectral filter (171) having filter coefficients that can be varied in order to spectrally shape the signal to match the hearing deficit of the user, maximize the intelligibility of a signal and to accommodate ambient signal and noise levels. An input signal form microphone (30) is converted from an analog to a digital signal via analog-to-digital converter (47), processed through digital processor (50), converted back to an analog signal via analog-to-digital processor (56) and then provided to the user through receiver (40). The processor (50) divides the frequency into different frequency bands (131-135) and estimates the energy within these bands through absolute value detectors (141-145) and low pass filters (151-155), wherein these energy estimates are used to calculate the desired gains for the frequency bands and the corresponding filter coefficients.

公开(公告)号：WO1986004733A1

公开(公告)日：1986-08-14

申请号：PCT/US1986000095

申请日：1986-01-23

Applicant: NICOLET INSTRUMENT CORPORATION

Inventor： NICOLET INSTRUMENT CORPORATION ,  GHADERI, Sahba ,  SHOHET, Juda, Leon ,  LITTLEJOHN, Duane, P.

IPC: H01J49/38

CPC classification number: H01J49/38 ,  Y10S505/88

Abstract: A mass spectrometer of the type wherein the sample is ionized, excited into resonance, and detected within a generally homogeneous magnetic field generated by a coil (1). During detection, the magnetic field is perturbed by coils (3) or ferromagnetic rings or disks (11) to form magnetic mirror regions (4) to contain the ions. Prior to detection, the ions may be contained by conventional electrostatic trapping plates (10) or by magnetic mirror regions (4).