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公开(公告)号：US20210218425A1
公开(公告)日：2021-07-15
申请号：US16739094
申请日：2020-01-09
Applicant: GOODIX TECHNOLOGY INC.
Inventor： Ahmed EMIRA , Faisai Hussien , Esmail BABAKRPUR NALOUSI
Abstract: A transmitter circuit is disclosed. The transmitter circuit includes a frequency circuit configured to generate a frequency signal, a power amplifier configured to drive an antenna with a drive signal according to the frequency signal, and a programmable delay circuit configured to controllably extend a propagation delay between the frequency signal generated by the frequency circuit and the drive signal of the power amplifier. The programmable delay circuit is programmed with a programming value which causes the transmitter circuit to pass a calibration test.
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公开(公告)号：US20210191444A1
公开(公告)日：2021-06-24
申请号：US16726773
申请日：2019-12-24
Applicant: GOODIX TECHNOLOGY INC.
Inventor： Hassan Osama Elwan , Esmail BABAKRPUR NALOUSI
IPC: G05F3/24
Abstract: An electronic circuit is disclosed. The electronic circuit includes a reference voltage generator, which includes a first candidate circuit configured to generate a first candidate reference voltage, a second candidate circuit configured to generate a second candidate reference voltage, and a selector circuit configured to select one of the first and second candidate reference voltages. The reference voltage generator also includes a third circuit configured to generate a power supply voltage based on the selected candidate reference voltage.
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公开(公告)号：US10950213B1
公开(公告)日：2021-03-16
申请号：US16888830
申请日：2020-05-31
Applicant: GOODIX TECHNOLOGY INC.
Inventor： Youhong Lu , Ching-Hua Yeh
IPC: G10K11/178 , H04R1/10
Abstract: An apparatus includes a hybrid adaptive active noise control unit (HAANCU) configured to provide an anti-noise signal to an ear speaker from a reference noise signal of a reference microphone and an error signal of an error microphone, a decimator configured to decimate the reference noise signal and error signal, an adaptive hybrid ANC training unit (AHANCTU) including at least one noise cancellation filter and a filter configured to provide a feedback signal to the at least one noise cancellation, which trains parameters of the AHANCTU based on the decimated reference noise signal, the decimated error signal, and the feedback signal. The apparatus further includes a rate conversion unit configured to up-sample the parameters and update the HAANCU with the up-sampled parameters.
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公开(公告)号：US20200343856A1
公开(公告)日：2020-10-29
申请号：US16575410
申请日：2019-09-19
Applicant: GOODIX TECHNOLOGY INC.
Inventor： Mohamed ABOUDINA , Ahmed EMIRA , Amr Abuellil
Abstract: Techniques are described for post-compensation of frequency drift due to changes in crystal oscillator temperature during operation. For example, a clock system is coupled with a crystal oscillator, and can use a reference clock signal from the crystal oscillator to generate an output clock signal using a clock generator. The clock system can monitor an electrical characteristic of a thermal component integrated with the oscillator, which it can map deterministically to a thermal value indicating a temperature of a crystal component of the oscillator. The clock system can then map the temperature deterministically to a frequency shift of the oscillator away from a nominal value. The clock system can then generate a post-compensation signal that directs the clock generator to shift the frequency of the clock output signal so as to compensate for at least a portion of the frequency drift.
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公开(公告)号：US10333404B1
公开(公告)日：2019-06-25
申请号：US15957900
申请日：2018-04-19
Applicant: GOODIX TECHNOLOGY INC.
Inventor： Siavash Yazdi , Faisal Hussien
Abstract: A control device for a switching voltage regulator having a high-side switch and a low-side switch to supply a switching voltage to a load includes a comparator configured to compare the switching voltage with a reference voltage to provide an enable signal to the low-side switch, and a spike detection circuit configured to receive the switching voltage and output an offset control signal to execute a time shift to the enable signal.
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Patent Agency Ranking
6.发明授权公开(公告)号：US10090848B1
公开(公告)日：2018-10-02
申请号：US15871060
申请日：2018-01-14
Applicant: GOODIX TECHNOLOGY INC.
Inventor： Ali Farid , Ahmed Emira , Hassan Elwan , Mohamed Aboudina , Janakan Sivasubramaniam
Abstract: A self-calibrating analog-to-digital converter includes a reference signal circuit configured to provide a reference signal, an analog-to-digital converter configured to generate a first digital representation of the reference signal, a dual-slope analog-to-digital converter configured to generate a second digital representation of the reference signal, and a digital engine configured to compare the first digital representation with the second digital representation to obtain a difference and output a calibration signal to the analog-to-digital converter in response to the difference. The reference signal circuit, the analog-to-digital converter, the dual-slop analog-to-digital converter, and digital engine are integrated in an integrated circuit.
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公开(公告)号：US10901009B2
公开(公告)日：2021-01-26
申请号：US16281105
申请日：2019-02-21
Applicant: GOODIX TECHNOLOGY INC.
Inventor： Rami Khatib , Ahmed Emira
Abstract: Techniques are described for power detection of an amplified signal. For example, power detection described herein can receive an amplified signal from a power amplifier, and can generate an output signal that can be fed back to help regulate an output level of the power amplifier. Embodiments receive the amplified signal can be received by a transistor. A first measurement can be obtained at the transistor's emitter corresponding to an average bias level of the amplified signal, and a second measurement can be obtained at the transistor's base. The output signal can be generated as a function of a difference between the two measurements. Some embodiments further compensate for a measured effective diode voltage corresponding to a base-emitter voltage. Such an approach can generate the power detector output signal to be independent of the β of the transistor, and therefore less affected by variations in process corners and temperature.
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公开(公告)号：US20200343857A1
公开(公告)日：2020-10-29
申请号：US16395222
申请日：2019-04-25
Applicant: GOODIX TECHNOLOGY INC.
Inventor： Ahmed EMIRA , Mounir FARES
Abstract: Techniques are described for tuning a resonant circuit using differential switchable capacitors. For example, embodiments can operate in context of a power amplifier with a tunable resonant output network. To tune the network, multiple differential switchable capacitors are provided in parallel. Each differential switchable capacitor can include a pair of capacitors, each coupled between a respective internal node and a respective differential terminal; and the internal nodes are selectively coupled or decoupled using a respective electronic switch (e.g., transistor). Switching on one of the differential switchable capacitors forms a capacitive channel having an associated capacitance. Each differential switchable capacitor can also include a switch network to selectively pull the internal nodes to a high or low voltage reference according to the selected operating mode.
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公开(公告)号：US20200169260A1
公开(公告)日：2020-05-28
申请号：US16779307
申请日：2020-01-31
Applicant: GOODIX TECHNOLOGY INC.
Inventor： Mohamed Aboudina , Ahmed Emira , Faisal Hussien
Abstract: Techniques are described for fast wakeup of a crystal oscillator circuit. Embodiments operate in context of a crystal oscillator coupled with a phase-locked loop (PLL). For example, prior to entering sleep mode, embodiments retain a previously obtained coarse code used to coarse-tune a voltage controlled oscillator of the PLL. On wakeup, the PLL is configured in a chirp mode, in which the retained coarse code and a sweep voltage are used to generate a chirp signal at, or close to, a target stimulating frequency for the crystal oscillator. The chirp signal can be used to inject energy into the crystal oscillator, thereby causing the crystal oscillator to move from sleep mode to steady state oscillation relatively quickly.
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公开(公告)号：US20200014351A1
公开(公告)日：2020-01-09
申请号：US16028431
申请日：2018-07-06
Applicant: GOODIX TECHNOLOGY INC.
Inventor： Ahmed Emira , RAMI KHATIB , Faisa Hussien
Abstract: A power amplifier includes an input terminal configured to receive a low voltage input signal, an output terminal configured to output a high voltage output signal, and a plurality of amplifiers stacked in series between a first voltage terminal and a second voltage terminal. Each of the amplifiers includes an input capacitor, an output capacitor, an input coupled to the input terminal through the input capacitor, an output coupled to the output terminal through the output capacitor, and a feedback element coupled between the input and the output of the amplifier.
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