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1. 发明授权

US10469091B2 Variable delay 有权
公开(公告)号：US10469091B2
公开(公告)日：2019-11-05
申请号：US15711924
申请日：2017-09-21
申请人： Qualcomm Incorporated
发明人： Masoud Roham
IPC分类号： H03L7/06 , H03L7/081 , H03L7/18 , H03L7/08 , H03K5/131 , H03L7/089 , H03L7/189 , H03D3/24 , H03K5/135 , H03L7/07 , H03L7/099
摘要： This disclosure describes controlling a variable delay system with a control signal generated in a phase-locked loop (PLL). Furthermore, aspects describe generating a compensation current based on a number of edges of pulses propagating through a variable delay line including multiple delay elements. The number of edges propagating through the variable delay is determined by computing a difference between a number of edges entering the variable delay line and a number of edges exiting the variable delay line. The compensation current is derived from a mirrored version of the current of the control signal of the PLL. Thus, the techniques and systems in this disclosure provide accurate and repeatable control of a variable delay line over variations in temperature and process using low-power circuits. Furthermore, the input signal to the variable delay line may be asynchronous with respect to a system clock or a reference signal of the PLL.

2. 发明申请

US20190073507A1 HYBRID CAPACITIVE AND ULTRASONIC SENSING 审中-公开
公开(公告)号：US20190073507A1
公开(公告)日：2019-03-07
申请号：US16183686
申请日：2018-11-07
申请人： Qualcomm Incorporated
发明人： Sandeep Louis D'Souza , Vadim Winebrand , Ashish Hinger , Paul Penchin Pan , Meir Agassy , Yizhaq Abudi , Micah Timothy Lawrence , Jong Soo Kim , Sherman Sebastian Antao , Bo-Ren Wang , Masoud Roham , Lennart Karl Mathe , Nathan Felix Altman , Suryaprakash Ganti , David William Burns
IPC分类号： G06K9/00 , G06K9/22 , G06F21/32
摘要： Systems, methods and apparatus for configuring a fingerprint sensor to operate in a capacitive sensing mode and an ultrasonic sensing mode are disclosed. A fingerprint sensor may be configured to operate in a capacitive sensing mode by driving a sensing electrode using a controller. In some implementations, an object positioned on or near the sensing electrode may be detected using the fingerprint sensor in the capacitive sensing mode, and the controller can drive electrodes of the fingerprint sensor differently to configure the fingerprint sensor to operate in an ultrasonic sensing mode. In some implementations, an applications processor may be instructed to authenticate a fingerprint of the object from image data obtained when the fingerprint sensor is operating in the ultrasonic sensing mode. In some implementations, a display of a mobile device containing the fingerprint sensor may be unlocked, or the mobile device may be woken up when the fingerprint is authenticated.

3. 发明授权

US09379731B1 Closed loop linearized VCO-based ADC 有权
标题翻译：闭环线性化基于VCO的ADC
公开(公告)号：US09379731B1
公开(公告)日：2016-06-28
申请号：US14863200
申请日：2015-09-23
申请人： QUALCOMM Incorporated
发明人： Masoud Roham , Mohammad Meysam Zargham , Li Lu
IPC分类号： H03M1/12 , H03M1/60
CPC分类号： H03M1/60 , G01K7/16 , H03K21/38 , H03M1/0612 , H03M1/0678 , H03M1/089
摘要： A device and method for analog to digital conversion is disclosed. The device can have a first amplifier operable to receive an input voltage and output a first control signal. The device can also have a first voltage-controlled oscillator (VCO) operably coupled to the first amplifier and configured to output a first signal based on the first control signal, the first signal having a sensor frequency. The device can also have a first switched-capacitor resistor operably coupled to the first VCO and to the first amplifier, the first switched-capacitor resistor configured to receive and be controlled by the sensor frequency. The device can also have a sensor counter operably coupled to the first VCO and configured produce a sensor count based on the sensor frequency. The device can also have a register configured provide a digital output proportional to the input voltage based on the sensor count.
摘要翻译：公开了一种用于模数转换的装置和方法。该装置可以具有可操作以接收输入电压并输出第一控制信号的第一放大器。该器件还可以具有可操作地耦合到第一放大器并被配置为基于第一控制信号输出第一信号的第一压控振荡器（VCO），第一信号具有传感器频率。该器件还可以具有可操作地耦合到第一VCO和第一放大器的第一开关电容器电阻器，第一开关电容器电阻器被配置为接收并由传感器频率控制。该装置还可以具有可操作地耦合到第一VCO的传感器计数器，并且被配置产生基于传感器频率的传感器计数。该器件还可以配置寄存器，提供与输入电压成比例的数字输出，该输入电压基于传感器计数。

4. 发明授权

US10235552B2 Hybrid capacitive and ultrasonic sensing 有权
公开(公告)号：US10235552B2
公开(公告)日：2019-03-19
申请号：US15633164
申请日：2017-06-26
申请人： QUALCOMM Incorporated
发明人： Sandeep Louis D'Souza , Vadim Winebrand , Ashish Hinger , Paul Penchin Pan , Meir Agassy , Yizhaq Abudi , Micah Timothy Lawrence , Jong Soo Kim , Sherman Sebastian Antao , Bo-Ren Wang , Masoud Roham , Lennart Karl Mathe , Nathan Felix Altman , Suryaprakash Ganti , David William Burns
IPC分类号： G06K9/00 , G06F21/32 , G06K9/22
摘要： Systems, methods and apparatus for configuring a fingerprint sensor to operate in a capacitive sensing mode and an ultrasonic sensing mode are disclosed. A fingerprint sensor may be configured to operate in a capacitive sensing mode by driving a sensing electrode using a controller. In some implementations, an object positioned on or near the sensing electrode may be detected using the fingerprint sensor in the capacitive sensing mode, and the controller can drive electrodes of the fingerprint sensor differently to configure the fingerprint sensor to operate in an ultrasonic sensing mode. In some implementations, an applications processor may be instructed to authenticate a fingerprint of the object from image data obtained when the fingerprint sensor is operating in the ultrasonic sensing mode. In some implementations, a display of a mobile device containing the fingerprint sensor may be unlocked, or the mobile device may be woken up when the fingerprint is authenticated.

5. 发明申请

US20180073933A1 DYNAMIC AND FAST LOCAL HOTSPOT SEARCH AND REAL TIME TEMPERATURE MONITORING 审中-公开
公开(公告)号：US20180073933A1
公开(公告)日：2018-03-15
申请号：US15263101
申请日：2016-09-12
申请人： QUALCOMM Incorporated
发明人： Mustafa Keskin , Masoud Roham , Mehdi Saeidi , Amy Derbyshire , Robert Gilmore , Lew Chua-Eoan
IPC分类号： G01K1/02 , G01K1/14 , G05D23/19
CPC分类号： G01K1/026 , G01K1/14 , G05D23/1917 , G06F1/206 , G06F12/1009 , G06F2212/1016 , Y02D10/16
摘要： In certain aspects, a method for temperature monitoring comprises receiving temperature readings from a plurality of temperature sensors on a chip, and determining an average or a sum of the temperature readings from the temperature sensors. The sum may be a weighted sum of the temperature readings. The method also comprises computing a temperature at a location on the chip based on the average or sum of the temperature readings. The location may be located at approximately a centroid of the locations of the temperature sensors, an estimated hotspot location on the chip, or another location on the chip.

6. 发明授权

US09800246B2 Level shifter applicable to low voltage domain to high voltage domain conversion 有权
公开(公告)号：US09800246B2
公开(公告)日：2017-10-24
申请号：US14859030
申请日：2015-09-18
申请人： QUALCOMM Incorporated
发明人： Masoud Roham , Yanjie Meng
IPC分类号： H03L5/00 , H03K19/0185 , H03K3/356
CPC分类号： H03K19/018521 , H03K3/35613 , H03K3/356182
摘要： A level shifter includes a latch circuit having a first FET and a second FET; an input circuit having a third FET and a fourth FET, the gates of the first and second FETs being coupled to the drains of the fourth and third FETs, respectively; a first resistive device (resistor, diode-connected FET) coupled between and in series with the first and third FETs between a first voltage rail and a second voltage rail; and a second resistive device (resistor, diode-connected FET) coupled between and in series with the second and fourth FETs between the first and second voltage rails. The gates of the third and fourth FETs are configured to receive a first set of complementary voltages, and a second set of complementary voltages are configured to be generated at the gates of the first and second FETs, respectively. The second set of complementary voltages are based on the first set of complementary voltages.

7. 发明授权

US11480985B2 Low-power voltage regulator with fast transient response 有权
公开(公告)号：US11480985B2
公开(公告)日：2022-10-25
申请号：US17154865
申请日：2021-01-21
申请人： QUALCOMM Incorporated
发明人： Xiaopeng Zhong , Masoud Roham
IPC分类号： G05F1/575 , G05F1/46 , G05F1/565 , G05F1/445 , G05F3/26
摘要： In certain aspects, a voltage regulator includes a pass device coupled between an input of the voltage regulator and an output of the voltage regulator. The voltage regulator also includes an amplifying circuit having a first input, a second input, and an output, wherein the first input is configured to receive a reference voltage, the second input is coupled to the output of the voltage regulator via a feedback path, and the output of the amplifying circuit is coupled to a gate of the pass device. The voltage regulator further includes a first current source coupled between a supply rail and the amplifying circuit, and a capacitor coupled between the first current source and the output of the voltage regulator.

8. 发明申请

US20200156108A1 THREE-LEVEL VOLTAGE BURST GENERATION SUITABLE FOR ULTRASONIC IMAGING APPLICATION 审中-公开
公开(公告)号：US20200156108A1
公开(公告)日：2020-05-21
申请号：US16194181
申请日：2018-11-16
申请人： QUALCOMM Incorporated
发明人： Shitong Zhao , Masoud Roham , Lennart Mathe , Bo-Ren Wang
IPC分类号： B06B1/02 , B06B1/06 , G01S15/89 , G01S7/52
摘要： A voltage burst is generated using a voltage supply having a single DC output voltage, VH coupled with a switching arrangement, including an input and a voltage transmitter output (Tx_Out), the input coupled with the output of the voltage supply. A control arrangement coupled with the switching arrangement is configured to operate the switching arrangement so as to provide, at the Tx_Out, a voltage burst that varies between an intermediate voltage, VM, and one or both of VH, and a minimum voltage, VL, where VL

9. 发明授权

US09898028B2 Low voltage, highly accurate current mirror 有权
公开(公告)号：US09898028B2
公开(公告)日：2018-02-20
申请号：US14755435
申请日：2015-06-30
申请人： QUALCOMM Incorporated
发明人： Masoud Roham , Liang Dai
IPC分类号： G05F1/10 , G05F3/26 , G01R19/00 , H03F3/347 , H03F3/50
CPC分类号： G05F3/262 , G01R19/0092 , H03F3/347 , H03F3/505 , H03F2200/453 , H03F2200/456 , H03F2200/474 , H03F2200/91
摘要： Certain aspects of the present disclosure generally relate to a low voltage, accurate current mirror, which may be used for distributed sensing of a remote current in an integrated circuit (IC). One example current mirror typically includes a first pair of transistors, a second pair of transistors in cascode with the first pair of transistors, a switching network coupled to the second pair of transistors, and a third pair of transistors coupled to the switching network. An input node between the first and second pairs of transistors may be configured to receive an input current for the current mirror, and an output node at the first pair of transistors may be configured to sink an output current for the current mirror, proportional to the input current. This current mirror architecture offers a hybrid low-voltage/high-voltage solution, tolerates low input voltages, provides high output impedance, and offers low area and power consumption.

10. 发明授权

US09621166B1 Wide frequency/voltage-ratio buffer with adaptive power consumption 有权
公开(公告)号：US09621166B1
公开(公告)日：2017-04-11
申请号：US14862473
申请日：2015-09-23
申请人： QUALCOMM Incorporated
发明人： Mohammad Meysam Zargham , Masoud Roham , Liang Dai
IPC分类号： H03K19/0185
CPC分类号： H03K19/018528 , H03F1/0266 , H03F1/42 , H03F3/3028 , H03F3/45179 , H03F3/45475 , H03F2200/18 , H03F2200/444 , H03K19/018521 , H03K19/018585
摘要： Certain aspects of the present disclosure provide methods and apparatus (e.g., a level shifter) for buffering an oscillating signal generated by an oscillator. One example apparatus generally includes an amplifier having a first amplification stage configured to amplify the oscillating signal generated by the oscillator and a second amplification stage configured to amplify an inverse of the oscillating signal generated by the oscillator; and a sensing circuit configured to adjust an operational bandwidth of the amplifier based on a frequency of the oscillating signal.

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