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1. 发明授权

US11385336B2 Time of flight sensors and sensing methods 有权
公开(公告)号：US11385336B2
公开(公告)日：2022-07-12
申请号：US16508276
申请日：2019-07-10
申请人： Maxim Integrated Products, Inc.
发明人： Arvin Emadi , Charles J. Razzell , John P. Hanks
IPC分类号： G01C3/08 , G01S7/4913 , G01S7/4915 , G01S17/36
摘要： A time of flight sensor includes a time of flight (TOF) processor having a digital TOF port, a digital input port, and a digital output port, the TOF processor comprising a phase detector including cyclically rotating demultiplexer (DEMUX), a first summer coupled to a first DEMUX output, a second summer coupled to a second DEMUX output, a third summer coupled to a third DEMUX output, a fourth summer coupled to a fourth DEMUX output, and a phase estimator coupled to outputs of the first summer, the second summer, the third summer and the fourth summer and having a phase estimate output; a driver having a digital driver port coupled to the digital TOF port and a driver output port; and an analog-to-digital converter (ADC) having an output port coupled to the digital input port of the digital TOF processor.

2. 发明授权

US11130406B2 Integrated standard-compliant data acquisition device 有权
公开(公告)号：US11130406B2
公开(公告)日：2021-09-28
申请号：US16744052
申请日：2020-01-15
申请人： Maxim Integrated Products, Inc.
发明人： Bryan A. Mueller , Erik S. Wheeler , Mark R. Plagens , Urs Mader
IPC分类号： B60L3/00 , G01R31/36 , G01R31/382 , G01R35/00 , B60L58/21
摘要： An integrated standard-compliant data acquisition device includes an electrically insulating package including a plurality of conductive leads and an integrated circuit (IC) disposed within the electrically insulating package and electrically coupled to at least some of the plurality of conductive leads. The IC includes a first multiplexer (MUX), a second MUX, a third MUX, an analog-to-digital converter (ADC), a plurality of registers, a fourth MUX, control logic, and communication circuitry. In operation, a first circuit value under a first condition can be determined and stored, a second circuit value under a second condition can be determined and stored, and the decision as to whether there is a fault condition can be mad by comparing the first circuit value and the second circuit value.

3. 发明授权

US11081635B1 Method and apparatus for driving a piezoelectric transducer with stored charge recovery 有权
公开(公告)号：US11081635B1
公开(公告)日：2021-08-03
申请号：US15950149
申请日：2018-04-10
申请人： Maxim Integrated Products, Inc.
发明人： Cary L. Delano , Timothy A. Dhuyvetter
IPC分类号： H01L41/04 , H02N2/06
摘要： A piezo driver system including a driver including a switching amplifier coupling a power port to a driver port, a battery coupled to the power port, a piezo device coupled to the driver port, where the switching amplifier provides a filtered driver signal to the driver port and returns stored charge from the piezo device to the battery. A method for driving a piezo device includes multiplying an input signal by an oscillator signal to provide a control signal, controlling a switching amplifier in accordance with the control signal to provided a filtered alternating current (AC) driver signal and a returned charge direct current (DC) signal, applying the filtered driver signal to a piezo device, and returning stored charge of the piezo device to a battery.

4. 发明授权

US10908671B2 Method and apparatus for disabling high speed bus operation under high common mode voltage conditions 有权
公开(公告)号：US10908671B2
公开(公告)日：2021-02-02
申请号：US15709177
申请日：2017-09-19
申请人： Maxim Integrated Products, Inc.
发明人： Kenneth J. Helfrich
IPC分类号： G06F1/3287 , G06F1/3296 , G06F13/40 , G06F13/42
摘要： An apparatus including a handshake window enabler having a pair of differential inputs and a window enablement output, a common mode detector coupled to a power input and a ground input and having a handshake inhibit output, and a handshake disabler coupled to the handshake window enabler, the common mode detector, and the pair of differential inputs. If a common mode voltage that out of range (“too high”) is detected, high speed handshake protocols are such that the bus operates a lower data rate.

5. 发明授权

US10413080B2 Spring element, spring and mattress 有权
公开(公告)号：US10413080B2
公开(公告)日：2019-09-17
申请号：US16089356
申请日：2017-10-20
申请人： Wilhelm Bretis
发明人： Wilhelm Bretis
IPC分类号： A47C27/07 , F16F1/02 , F16F1/26 , F16F1/18 , A47C27/20 , A47C27/05 , A47C27/06
摘要： A spring element (1) having a pair of sleeves formed of two sleeves (5, 7) is disclosed. Each sleeve (5, 7) of the pair of sleeves is formed of a closed band. The two oppositely disposed sleeves (5, 7) are connected to each other by a connecting piece (9) at one point of their circumference, respectively. On each sleeve (5, 7), a projection (11a, 11b) directed towards the opposite sleeve (7, 5) is provided, spaced apart from the connecting piece (9). In this way, a receiving space (13) defined by the connecting piece (9) and the projections (11a, 11b) is formed between the sleeves (5, 7). A spring comprises a rod-shaped central bar (21) and such a spring element (1). The spring element (1) is slid onto the central bar (21) such that a portion of the central bar (21) is held in the receiving space (13) of the spring element (1) and can be removed without damage from the receiving space (13) of the spring element (1). This spring is provided for a mattress for lying and/or seating means comprising a mattress body made of a material movable in itself, particularly foam or latex, having hollow spaces arranged transversely to a longitudinal axis or a lateral axis. A spring is provided in at least one hollow space.

6. 发明授权

US09959682B2 Digital camera system for acoustic modeling 有权
公开(公告)号：US09959682B2
公开(公告)日：2018-05-01
申请号：US15608952
申请日：2017-05-30
申请人： Acoustic Knowledge, LLC
发明人： Charles A. G. Boyle , Caleb J. Madsen
IPC分类号： G06K9/36 , G06K9/46 , G06T19/00 , G06T7/20 , G11B31/00 , G11B20/10 , H04N101/00
CPC分类号： G06T19/006 , G06T7/20 , G11B31/006 , G11B2020/10546 , G11B2020/10611 , H04N5/225 , H04N5/23229 , H04N5/772 , H04N9/802 , H04N9/8205 , H04N2101/00
摘要： A digital camera with audio, visual and motion analysis includes a digital processor, an input processing system, and one or more imaging sensors, sound sensors, and motion sensors. In a non-limiting embodiment, the input processing system including non-transitory computer readable media including code segments, executable by the digital processor, for real-time audio, visual and motion analysis to develop a digital model of an ambient environment of the digital camera from data derived from the imaging sensor(s), sound sensor(s) and motion sensor(s).

7. 发明授权

US09753062B2 System and method for current measurement in the presence of high common mode voltages 有权
公开(公告)号：US09753062B2
公开(公告)日：2017-09-05
申请号：US14666228
申请日：2015-03-23
申请人： Maxim Integrated Products, Inc.
发明人： Federico Mazzarella , Massimiliano Musazzi
IPC分类号： G01R1/30 , G01R19/00 , G01R17/16
CPC分类号： G01R19/0092 , G01R17/16
摘要： A system and method for making accurate current measurements by determining the differential voltage drop across a resistor in series with the load in the presence of large common mode voltages. A compensating voltage equal in magnitude but 180 degrees out of phase with a common mode voltage is generated and applied to a network of resistors connected to a measurement amplifier, thereby significantly reducing the magnitude of the common mode voltage at the measurement amplifier's inputs. An error correction voltage is generated and applied to the output of the measurement amplifier to compensate for errors in the values of the resistor network.

8. 发明授权

US09728155B2 Gamma switching amplifier 有权
公开(公告)号：US09728155B2
公开(公告)日：2017-08-08
申请号：US13365082
申请日：2012-02-02
申请人： Ronald Bonshaw Koo
发明人： Ronald Bonshaw Koo
IPC分类号： G09G3/36
CPC分类号： G09G3/3696 , G09G2310/0291 , G09G2320/0276 , G09G2330/021
摘要： Electronic devices with displays are configured to provide a gamma correction signal to each source driver chip driving the display. The gamma correction signal is supplied by a gamma application circuit coupled to each source driver chip. The gamma application circuit includes a switching amplifier configured to output a switching waveform and a filter to input the switching waveform and output the gamma correction signal to an input of each source driver chip. The switching amplifier functions as a switching power supply having improved power efficiency compared to conventional gamma application circuits.

9. 发明授权

US09608635B1 Digital input circuit and method for high voltage sensors 有权
公开(公告)号：US09608635B1
公开(公告)日：2017-03-28
申请号：US15018804
申请日：2016-02-08
申请人： Maxim Integrated Products, Inc.
发明人： Anthony S. Partow , Pirooz Parvarandeh
IPC分类号： H03K19/01 , H03K19/0175 , H03K3/356 , H03G11/00 , H03G99/00
CPC分类号： H03K19/017509 , H03G11/00 , H03G11/004 , H03G99/00 , H03K3/356
摘要： A digital input circuit includes a series connection of a current limiter and a switch having a switch control input coupled between a signal input and ground, and a logic level shifter coupled to the signal input and having a switch control output coupled to the switch control input and a signal output, where a maximum amplitude at the signal input is greater than a maximum amplitude at the signal output. A digital input method includes coupling an input signal to ground with a current limiter by closing an electronic switch, providing an output signal responsive to the input signal, where a maximum amplitude of the input signal is greater than a maximum amplitude of the output signal, by latching the output signal while the input signal is above a threshold voltage and opening the electronic switch after the output signal is latched.

10. 发明授权

US09608626B1 Integrated circuit with precision current source 有权
公开(公告)号：US09608626B1
公开(公告)日：2017-03-28
申请号：US14862744
申请日：2015-09-23
申请人： Maxim Integrated Products, Inc.
发明人： Gabriel E. Tanase
IPC分类号： H03K17/687 , H01L27/06 , H01L27/092 , H01L27/02 , H05B33/08
CPC分类号： H03K17/6871 , G05F1/561 , H01L27/0207 , H01L27/0629 , H01L27/092 , H05B33/0809 , H05B33/0812
摘要： An integrated circuit with precision current source includes a first MOSFET, a second MOSFET, an op-amp and a resistor formed on a common semiconductor substrate. The first MOSFET is characterized by a first multiplier (×M1) and the second MOSFET is characterized by a second multiplier (×M2) where a ratio of ×M2 to ×M1 is greater than one. An inverting input of the op-amp is coupled to a drain of the first MOSFET and an output of the op-amp is coupled to a gate of the first MOSFET. A negative feedback circuit limits a rise in output current under low output voltage conditions.

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