公开(公告)号：US07031408B2

公开(公告)日：2006-04-18

申请号：US10136189

申请日：2002-04-30

Applicant: Hans-Andrea Loeliger ,  Felix Tarköy ,  Richard Goodson

Inventor： Hans-Andrea Loeliger ,  Felix Tarköy ,  Richard Goodson

IPC: H04L27/06

CPC classification number: H04L1/0059 ,  H03M13/256 ,  H03M13/29 ,  H03M13/2903 ,  H03M13/39 ,  H03M13/41 ,  H03M13/6516 ,  H04L1/0054

Abstract: A search path recovery mechanism for a sequential decoder employs a prescribed self-concatenated “Loeliger” convolutional code, that is either decodable by the sequential decoder for data recovery, or is decodable (although sub-optimally) by a Viterbi decoder as an adjunct to the sequential decoder to improve statistics during path recovery. The Viterbi decoder is incorporated in an alternate decoder which includes metric calculators, that compute branch metrics, that are alternately coupled to the Viterbi decoder, operating at twice the symbol rate. Using estimate bits from the Viterbi decoder, a syndrome former estimates the recovered state and generates an estimate of the validity of the recovered state. Their validity is verified by a path recovery detector, which operates as a zero error detection filter by summing a prescribed number of previous syndrome former outputs. When the sum of a consecutive number of syndrome former outputs is zero, the contents of the syndrome former are transferred to corresponding stages of the sequential decoder, to set the recovered path origination state for the sequential decoder. Once the sequential decoder has recovered to its correct origin state, a new origin state will not be required from the syndrome former unless path loss occurs.

公开(公告)号：US20090163821A1

公开(公告)日：2009-06-25

申请号：US12341619

申请日：2008-12-22

Applicant: Josep SOLA I CAROS ,  Hans-Andrea LOELIGER

Inventor： Josep SOLA I CAROS ,  Hans-Andrea LOELIGER

IPC: A61B5/02

CPC classification number: A61B5/029 ,  A61B5/02028 ,  A61B5/02125 ,  A61B5/0295 ,  A61B5/0402 ,  A61B5/0535 ,  G06F19/00

Abstract: The invention provides a method and an apparatus for a continuous non-invasive and non-obstrusive monitoring of blood pressure. The method comprises the steps of: a) measuring the value (PW) of a Pulse Wave parameter, equal to or derived from the Pulse Wave Velocity (PWV) parameter of a segment of the arterial tree of a subject, b) measuring the value (CO) of the Cardiac Output parameter, and c) determining the value (BP) of the blood pressure that satisfies B   P = arg   min BP   d  ( P   W ,  ( C   O , B   P ) ) , where PW is the value measured in step a), (CO, BP) corresponds to a predicted value of the Pulse Wave parameter computed according to a model of the segment of the arterial tree, the value (CO) of the Cardiac Output parameter measured in step b) and an hypothesized value of the blood pressure.

公开(公告)号：US20060212504A1

公开(公告)日：2006-09-21

申请号：US11081182

申请日：2005-03-16

Applicant: Hans-Andrea Loeliger ,  Matthias Frey ,  Patrick Merkli

Inventor： Hans-Andrea Loeliger ,  Matthias Frey ,  Patrick Merkli

IPC: G06F7/38

CPC classification number: H03M13/6597 ,  H03M13/45

Abstract: An analog electronic circuit is proposed that e.g. computes the symbol likelihoods for PAM or QAM signal constellations. The circuit has at least one set of M transistors connected to a common current source. A multiplier/adder generates the voltages to be applied to the transistors from a value y and a set of M expected values in such a way that the currents through the transistors correspond to the likelihood that the value y corresponds to the expected values. The circuit can be used for signal demodulation and various other applications.

Abstract translation: 提出了一种模拟电子电路， 计算PAM或QAM信号星座的符号似然。 该电路具有连接到公共电流源的至少一组M个晶体管。 乘法器/加法器从值y和一组M个期望值产生要施加到晶体管的电压，使得通过晶体管的电流对应于值y对应于期望值的似然性。 该电路可用于信号解调和各种其他应用。

公开(公告)号：US06282559B1

公开(公告)日：2001-08-28

申请号：US09250331

申请日：1999-02-16

Applicant: Markus Helfenstein ,  Hans-Andrea Loeliger ,  Felix Lustenberger ,  Felix Tarköy

Inventor： Markus Helfenstein ,  Hans-Andrea Loeliger ,  Felix Lustenberger ,  Felix Tarköy

IPC: G06G700

CPC classification number: H03M13/6597 ,  G05F3/262 ,  G06G7/26

Abstract: A circuit module for data processing comprises several first inputs (Ix,i), several second inputs (Iy,i) and several outputs (Ii,j). First transistors (Ti,j) combine the first and second inputs. Each of the first transistors (Ti,j) is connected at its emitter or source with a first input and at its base or gate with a second input. Each second input is further connected to the base or gate and the emittor or source of a second transistor (Ti). The currents of the outputs correspond to the product of the currents through the individual inputs. By combining the outputs sum products can be calculated, especially for computing discrete probability distributions. The combination of several circuit modules allows to solve complex signal processing tasks.

Abstract translation: 用于数据处理的电路模块包括多个第一输入（Ix，i），几个第二输入（Iy，i）和多个输出（Ii，j）。 第一晶体管（Ti，j）组合第一和第二输入。 第一晶体管（Ti，j）中的每一个在其发射极或源极与第一输入端连接，并且在其基极或栅极处与第二输入端连接。 每个第二输入进一步连接到第二晶体管（Ti）的基极或栅极以及发射极或源极。 输出电流对应于通过各个输入的电流的乘积。 通过组合输出可以计算和产生，特别是用于计算离散概率分布。 几个电路模块的组合允许解决复杂的信号处理任务。

公开(公告)号：US08585605B2

公开(公告)日：2013-11-19

申请号：US12341619

申请日：2008-12-22

Applicant: Josep Sola I Caros ,  Hans-Andrea Loeliger

Inventor： Josep Sola I Caros ,  Hans-Andrea Loeliger

IPC: A61B5/02

CPC classification number: A61B5/029 ,  A61B5/02028 ,  A61B5/02125 ,  A61B5/0295 ,  A61B5/0402 ,  A61B5/0535 ,  G06F19/00

Abstract: The invention provides a method and an apparatus for a continuous non-invasive and non-obstrusive monitoring of blood pressure. The method comprises the steps of: a) measuring the value (PW) of a Pulse Wave parameter, equal to or derived from the Pulse Wave Velocity (PWV) parameter of a segment of the arterial tree of a subject, b) measuring the value (CO) of the Cardiac Output parameter, and c) determining the value (BP) of the blood pressure that satisfies B ⁢ ⁢ P = arg ⁢ ⁢ min BP ⁢ ⁢ d ⁡ ( P ⁢ ⁢ W , ⁢ ( C ⁢ ⁢ O , B ⁢ ⁢ P ) ) , where PW is the value measured in step a), (CO, BP) corresponds to a predicted value of the Pulse Wave parameter computed according to a model of the segment of the arterial tree, the value (CO) of the Cardiac Output parameter measured in step b) and an hypothesized value of the blood pressure.

Abstract translation: 本发明提供了一种用于连续非侵入性和非obstrusive监测血压的方法和装置。 该方法包括以下步骤：a）测量脉搏波参数的值（PW）等于或从主体动脉树段的脉搏波速度（PWV）参数导出，b）测量值 （CO），以及c）确定满足B笨P的血压值（BP）= arg······························ ，B笨P）），其中PW是步骤a）中测量的值，（CO，BP）对应于根据动脉树段的模型计算的脉搏波参数的预测值， CO）在步骤b）中测量的心输出参数和假设的血压值。

公开(公告)号：US07451174B2

公开(公告)日：2008-11-11

申请号：US11081182

申请日：2005-03-16

Applicant: Hans-Andrea Loeliger ,  Matthias Urs Frey ,  Patrick Peter Merkli

Inventor： Hans-Andrea Loeliger ,  Matthias Urs Frey ,  Patrick Peter Merkli

IPC: G06G7/00

CPC classification number: H03M13/6597 ,  H03M13/45

Abstract: An analog electronic circuit is proposed that e.g. computes the symbol likelihoods for PAM or QAM signal constellations. The circuit has at least one set of M transistors connected to a common current source. A multiplier/adder generates the voltages to be applied to the transistors from a value y and a set of M expected values in such a way that the currents through the transistors correspond to the likelihood that the value y corresponds to the expected values. The circuit can be used for signal demodulation and various other applications.

Abstract translation: 提出了一种模拟电子电路， 计算PAM或QAM信号星座的符号似然。 该电路具有连接到公共电流源的至少一组M个晶体管。 乘法器/加法器从值y和一组M个期望值产生要施加到晶体管的电压，使得通过晶体管的电流对应于值y对应于期望值的似然性。 该电路可用于信号解调和各种其他应用。

公开(公告)号：US06584486B1

公开(公告)日：2003-06-24

申请号：US09628578

申请日：2000-07-31

Applicant: Markus Helfenstein ,  Hans-Andrea Loeliger ,  Felix Lustenberger ,  Felix Tarköy

Inventor： Markus Helfenstein ,  Hans-Andrea Loeliger ,  Felix Lustenberger ,  Felix Tarköy

IPC: G06G716

CPC classification number: H03M13/6597 ,  G06G7/24 ,  H03D7/1408 ,  H03D7/1433 ,  H03D7/1441 ,  H03D7/1458 ,  H03D7/1491 ,  H03D2200/0033 ,  H03M13/11 ,  H03M13/2957 ,  H03M13/37

Abstract: The method serves to add at least two values by means of a circuit. Both input values and output values are represented in differential form, either as a pair of voltages or as a pair of currents. The circuit consists of four transistors; it has a pair of current inputs for one of the input values, a pair of voltage inputs for the other input value, and a pair of current outputs for the output value. The voltage between the two voltage inputs corresponds to the first input value; the quotient of the currents through the two current inputs corresponds to the exponential of the other input value; and the quotient of the currents through the two current outputs corresponds to the exponential of the sum of the two input values. Values represented by voltages are easily transformed into current representation, and vice versa. The method is suitable for a variety of applications and the circuit can be cascaded both with copies of itself and with other circuits.

Abstract translation: 该方法用于通过电路添加至少两个值。 输入值和输出值均以差分形式表示，无论是作为一对电压还是作为一对电流。 该电路由四个晶体管组成; 它具有用于输入值之一的一对电流输入，用于另一输入值的一对电压输入和用于输出值的一对电流输出。 两个电压输入之间的电压对应于第一个输入值; 通过两个电流输入的电流的商对应于另一个输入值的指数; 并且通过两个电流输出的电流的商对应于两个输入值之和的指数。 由电压表示的值容易地转换为当前表示，反之亦然。 该方法适用于各种应用，电路可以与自身和其他电路的副本进行级联。