Patents Assigned to ForteMedia, Inc.
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Patent number: 11943584Abstract: A micro-electro-mechanical system (MEMS) microphone is provided. The MEMS microphone includes a substrate, a diaphragm, a backplate and a first protrusion. The substrate has an opening portion. The diaphragm is disposed on one side of the substrate and extends across the opening portion of the substrate. The backplate includes a plurality of acoustic holes. The backplate is disposed on one side of the diaphragm. An air gap is formed between the backplate and the diaphragm. The first protrusion extends from the backplate towards the air gap.Type: GrantFiled: April 7, 2022Date of Patent: March 26, 2024Assignee: FORTEMEDIA, INC.Inventors: Chih-Yuan Chen, Jien-Ming Chen, Feng-Chia Hsu, Wen-Shan Lin, Nai-Hao Kuo
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Patent number: 11818563Abstract: A package structure of a micro speaker is provided. The package structure includes a substrate, a diaphragm, a coil, an etch stop layer, a carrier board, a permanent magnetic element, and package lid. The substrate has a hollow chamber. The diaphragm is suspended over the hollow chamber. The coil is embedded in the diaphragm. The etch stop layer is positioned below the coil and overlaps the coil in the direction that is perpendicular to the top surface of the diaphragm. The etch stop layer is made of a metal material. The carrier board is disposed on the bottom surface of the substrate. The permanent magnetic element is disposed on the carrier board and in the hollow chamber. The package lid is wrapped around the substrate and the diaphragm, and has a lid opening that exposes a portion of the top surface of the diaphragm.Type: GrantFiled: June 2, 2022Date of Patent: November 14, 2023Assignee: FORTEMEDIA, INC.Inventors: Li-Jen Chen, Yu-Xuan Xu, Yu-Ting Cheng, Shih-Chin Gong
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Patent number: 11665484Abstract: A package structure of a micro speaker includes a substrate, a diaphragm, a coil, a carrier board, a lid, a first permanent magnetic element, and a second permanent magnetic element. The substrate has a hollow chamber. The diaphragm is suspended over the hollow chamber. The coil is embedded in the diaphragm. The carrier board is disposed on the bottom surface of the substrate. The first permanent magnetic element is disposed on the carrier board and in the hollow chamber. The lid is wrapped around the substrate and the diaphragm. The lid exposes a portion of the top surface of the diaphragm. The second permanent magnetic element is disposed either above the lid or under the lid.Type: GrantFiled: October 22, 2021Date of Patent: May 30, 2023Assignee: FORTEMEDIA, INC.Inventors: Li-Jen Chen, Yu-Min Fu, Yu-Ting Cheng, Shih-Chin Gong
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Patent number: 11459230Abstract: A MEMS microphone includes a substrate, a backplate disposed on a side of the substrate, a diaphragm movably disposed between the substrate and the backplate, and a plurality of slots formed on the diaphragm. The slots are spaced apart from each other and have a non-constant width to relieve the residual stress on the diaphragm.Type: GrantFiled: March 31, 2020Date of Patent: October 4, 2022Assignee: FORTEMEDIA, INC.Inventors: Jien-Ming Chen, Feng-Chia Hsu, Wen-Shan Lin, Hsin-Li Lee, Nai-Hao Kuo
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Patent number: 11284187Abstract: A small-array MEMS (micro-electro mechanical system) microphone apparatus is provided. The apparatus includes first and second microphone modules. A first microphone of the first microphone module captures a first acoustic signal from a sound source through a first acoustic hole. A second microphone of the second microphone module captures a second acoustic signal from the sound source through a second acoustic hole. A first integrated circuit performs a first logic operation on the first acoustic signal and the second acoustic signal to generate a first sum acoustic signal. The first integrated circuit performs a sampling delay on the second acoustic signal with a first clock signal, and subtracts the delayed second acoustic signal from the first acoustic signal to obtain a first differential acoustic signal. The first differential acoustic signal has a first directivity. A second integrated circuit bypasses and outputs the second acoustic signal which is omnidirectional.Type: GrantFiled: October 26, 2020Date of Patent: March 22, 2022Assignee: FORTEMEDIA, INC.Inventors: Yen-Son Paul Huang, Tsung-Lung Yang
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Patent number: 11259106Abstract: A micro-electro-mechanical system (MEMS) device is provided. The MEMS device includes a substrate, a backplate disposed on a side of the substrate, a diaphragm, and a dynamic valve layer. The substrate forms an opening. The diaphragm is disposed on the side of the substrate and extends across the opening of the substrate, wherein the diaphragm forms a vent hole. The dynamic valve layer is disposed on the side of the substrate and includes a flap portion, wherein the flap portion covers at least a part of the vent hole when viewed in a direction perpendicular to the diaphragm, and the flap portion deforms when air flows through the vent hole.Type: GrantFiled: November 6, 2020Date of Patent: February 22, 2022Assignee: FORTEMEDIA, INC.Inventors: Chih-Yuan Chen, Jien-Ming Chen, Feng-Chia Hsu, Wen-Shan Lin, Nai-Hao Kuo
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Patent number: 11202153Abstract: A micro-electro-mechanical system (MEMS) microphone is provided. The MEMS microphone includes a substrate, a backplate disposed on a side of the substrate, and a diaphragm movably disposed between the substrate and the backplate. The diaphragm includes a plurality of implantation portions, and the implantation portions have different concentration-depth profiles.Type: GrantFiled: July 21, 2020Date of Patent: December 14, 2021Assignee: FORTEMEDIA, INC.Inventors: Jien-Ming Chen, Feng-Chia Hsu, Wen-Shan Lin, Hsin-Li Lee, Nai-Hao Kuo
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Patent number: 11200908Abstract: A method for improving voice quality is provided herein. The method includes receiving acoustic signals from a microphone array; receiving sensor signals from an accelerometer sensor of the headset; generating, by a beamformer, a speech output signal and a noise output signal according to the acoustic signals; best-estimating the speech output signal according to the sensor signals to generate a best-estimated signal; and generating a mixed signal according to the speech output signal and the best-estimated signal.Type: GrantFiled: June 30, 2020Date of Patent: December 14, 2021Assignee: FORTEMEDIA, INC.Inventors: Qing-Guang Liu, Xiaoyan Lu
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Patent number: 11051106Abstract: A movable embedded microstructure includes a substrate, a diaphragm, a circuit board, a permanent magnetic element, and a multi-layered coil. The substrate has a hollow chamber. The diaphragm is disposed on the substrate, and covers the hollow chamber. The circuit board is bonded to the substrate. The permanent magnetic element is disposed on the circuit board and in the hollow chamber. The multi-layered coil is embedded in the diaphragm.Type: GrantFiled: April 29, 2019Date of Patent: June 29, 2021Assignee: FORTEMEDIA, INC.Inventors: Li-Jen Chen, Yu-Min Fu, Yu-Ting Cheng, Shih-Chin Gong
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Patent number: 10692515Abstract: A device for acoustic echo cancellation includes a modulator, a speaker, a microphone, a demodulator, and an adaptive filter. The modulator duplicates a far-end signal to a frequency range that is higher than the far-end signal to be a first frequency-shifted signal and generates a modulated signal according to the far-end signal and the first frequency-shifted signal. The speaker generates a sound signal according to the modulated signal. The microphone generates a microphone signal according to a near-end signal and an echo signal. The echo signal is a convolution of the sound signal with a room impulse response. The demodulator extracts a demodulated signal and an echo-reference signal from the microphone signal. The adaptive filter generates a recovered signal to recover the near-end signal according to the demodulated signal and the echo-reference signal.Type: GrantFiled: April 17, 2018Date of Patent: June 23, 2020Assignee: FORTEMEDIA, INC.Inventors: Jianming Liu, Qing-Guang Liu
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Patent number: 10694297Abstract: A MEMS microphone package includes a substrate, a transducer, an integrated circuit chip, and a housing. The substrate has a hollow chamber, a first opening and a second opening, wherein the first opening and the second opening communicate with the hollow chamber. The transducer is disposed on the substrate. The integrated circuit chip is disposed on the substrate. The housing is disposed on the substrate, and covers the integrated circuit chip and the transducer.Type: GrantFiled: March 25, 2019Date of Patent: June 23, 2020Assignee: FORTEMEDIA, INC.Inventors: Hsin-Li Lee, Jien-Ming Chen, Wen-Shan Lin, Nai-Hao Kuo, Feng-Chia Hsu
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Patent number: 10475434Abstract: An electronic device is provided. The electronic device includes a first microphone device, a speaker, a memory circuit, and a processor. The first microphone device is configured to generate first data based on a first sound. The memory circuit at least stores acoustic data. The processor is coupled to the first microphone device and the speaker. The processor generates second data based on the first data and the acoustic data. The speaker generates a second sound based on the second data. The acoustic data includes the frequency-response of human ear and sound-masking data.Type: GrantFiled: April 13, 2018Date of Patent: November 12, 2019Assignee: FORTEMEDIA, INC.Inventor: Tsung-Lung Yang
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Patent number: 10431199Abstract: An electronic device including an earphone device is provided. The earphone device includes a shell, a speaker, a first microphone device, a memory circuit and a controller. The memory circuit stores multiple parameter sets. The first microphone device receives a first sound. The first microphone device generates first data based on the first sound. The controller compares the first data with the parameter sets of the memory circuit and determines which one of the parameter sets corresponds to the first data based on the frequency parameters and the volume parameters. The controller generates second data based on the adjustment parameters of the one of the parameter sets, and the speaker generates a second sound based on the second data. The first sound generates a third sound in the shell, and the phase of the second sound is substantially opposite to the phase of the third sound.Type: GrantFiled: April 13, 2018Date of Patent: October 1, 2019Assignee: FORTEMEDIA, INC.Inventors: Tsung-Lung Yang, Hung-Chih Teng
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Patent number: 10343898Abstract: A micro-electro-mechanical system (MEMS) microphone is provided. The MEMS microphone includes a substrate, a backplate, a diaphragm, a first insulating protrusion and a plurality of second insulating protrusions. The backplate is disposed on a side of the substrate. The diaphragm is disposed between the substrate and the backplate and is movable relative to the backplate. The first insulating protrusion and the second insulating protrusions are formed on the side of the backplate facing the diaphragm. The first insulating protrusion is connected to and affixed to the diaphragm permanently, and an air gap is formed between the diaphragm and each of the second insulating protrusions.Type: GrantFiled: July 2, 2018Date of Patent: July 9, 2019Assignee: FORTEMEDIA, INC.Inventors: Jien-Ming Chen, Nai-Hao Kuo, Wen-Shan Lin, Hsin-Li Lee
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Patent number: 10349161Abstract: A circuit for biasing a transducer including a first plate and a second plate includes a front-end buffer and a charge pump. The front-end buffer generates an internal signal at an internal node in response to a voltage signal of the second plate. The transducer receives the incident sound wave at the first plate to generate the voltage signal at the second plate. The charge pump boosts the internal signal into a boost voltage at the first plate according to a first clock signal.Type: GrantFiled: October 12, 2017Date of Patent: July 9, 2019Assignee: FORTEMEDIA, INC.Inventors: Ion Opris, Abu Hena M Kamal, Ramesh Prakash, Lee Tay Chew
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Patent number: 10349172Abstract: A microphone apparatus is provided. The microphone apparatus includes a microphone cover; a circuit board, an integrated circuit, a first microphone, and a second microphone. The integrated circuit is coupled to the microphone cover and the circuit board to form a first chamber and a second chamber. The first microphone is placed inside the first chamber and configured to capture a first acoustic signal from a sound source. The second microphone is placed inside the second chamber and configured to capture a second acoustic signal from the sound source. The first microphone and the second microphone have the same sensitivity, phase, and omni-directivity. The integrated circuit performs a time-delay process on the second acoustic signal and subtracts the time-delayed second acoustic signal from the first acoustic signal to generate a differential signal. The integrated circuit forms a polar pattern of the microphone apparatus according to the differential signal.Type: GrantFiled: August 8, 2018Date of Patent: July 9, 2019Assignee: FORTEMEDIA, INC.Inventors: Yen-Son Paul Huang, Tsung-Lung Yang
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Patent number: 10277969Abstract: A microphone device is provided. The microphone device includes a microphone cover, a circuit board, an integrated circuit, a first acoustic sensor, and a second acoustic sensor. The circuit board is coupled to the microphone cover. The circuit board includes a first acoustic port and a second acoustic port. The integrated circuit is coupled to the microphone cover and the circuit board to form a first chamber and a second chamber. The first acoustic sensor is arranged in the first chamber. The second acoustic sensor is arranged in the second chamber. The integrated circuit is coupled to the first acoustic sensor and the second acoustic sensor.Type: GrantFiled: August 3, 2017Date of Patent: April 30, 2019Assignee: FORTEMEDIA, INC.Inventors: Tsung-Lung Yang, Hsin-Li Lee, Neng-Bin Wan
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Patent number: 10250980Abstract: A digital microphone is provided. The digital microphone includes an acoustic sensor, a bias generator, first and second attenuators, a buffer, an amplifier, an ADC, and a controller. The acoustic sensor transfers an acoustic signal to a voltage signal. The bias generator provides a bias voltage to the acoustic sensor. The first attenuator attenuates the voltage signal by a first attenuation value. The buffer buffers the voltage signal to generate a buffered voltage signal. The amplifier amplifies the buffered voltage signal to generate an amplified signal. The ADC converts the amplified signal to a data signal with a digital format. The second attenuator attenuates the data signal by a second attenuation value. The controller determines whether the amplified signal is larger than a reference value and adjusts the bias voltage and the first and second attenuation values of the first and second attenuators according to the result determined by the controller.Type: GrantFiled: October 11, 2017Date of Patent: April 2, 2019Assignee: FORTEMEDIA, INC.Inventors: Ion Opris, Abu Hena M Kamal, Lee Tay Chew, Ramesh Prakash, Shomo Chen, Qiang Wei, Lung-Chu Joseph Chen
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Patent number: 10157628Abstract: A sound identification device is provided. The sound identification device includes a microphone array and a processing unit. The microphone array includes a plurality of microphones disposed within a microphone module mounted on a housing of the sound identification device. Each microphone receives an acoustic signal caused by a gesture performed on a surface of the microphone module and converts the received acoustic signal to a digital acoustic signal. The processing unit is configured to receive the digital acoustic signal from each microphone, and perform a sound identification process on the digital acoustic signal from each microphone to generate a sound identification result conveying information of the gesture. The processing unit controls at least one application program executed by the processing unit according to the sound identification result.Type: GrantFiled: February 2, 2018Date of Patent: December 18, 2018Assignee: FORTEMEDIA, INC.Inventors: Qing-Guang Liu, Xiaoyan Lu, Weiping Zhang
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Patent number: 10110121Abstract: A charge pump includes a first unidirectional conducting device, a flying capacitor, a second unidirectional conducting device, an output capacitor, a first switch, and a second switch. The first unidirectional conducting device unidirectionally couples a supply voltage to an internal node. The flying capacitor is coupled between the internal node and a clock signal. The second unidirectional conducting device unidirectionally couples the internal node to an output node. The output capacitor is coupled between the output node and a ground. The first switch couples a discharge node to the ground according to a discharge signal. The second switch couples the output node to the discharge node according to the voltage of the internal node.Type: GrantFiled: October 5, 2017Date of Patent: October 23, 2018Assignee: FORTEMEDIA, INC.Inventors: Ion Opris, Abu Hena M Kamal, Lee Tay Chew, Shomo Chen