Patents by Inventor Dengyong Ma
Dengyong Ma has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9942682Abstract: The present invention discloses an implementation method and a device of a multi-bit ?-? modulation-based digital speaker system. The method comprises, 1) digital format converting; 2) oversampling interpolation filtering; 3) multi-bit ?-? modulating; 4) thermometer coding; 5) multi-channel mismatch shaping; 6) coding format converting; 7) multi-channel digital power-amplifying; 8) driving a speaker array or a multiple voice coil speaker to sound. The device comprises: a digital input interface, an oversampling interpolation filter, a multi-bit ?-? modulator, a thermometer coder, a multi-channel mismatch shaper, a coding format converter, a multi-channel digital power-amplifier, and a speaker array or a multiple voice coil speaker; each portion being connected in proper order.Type: GrantFiled: December 2, 2014Date of Patent: April 10, 2018Inventors: Dengyong Ma, Jun Yang, Jianming Zhou, Guoqiang Chai, Yefeng Cai, Yongsheng Mu
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Publication number: 20160309274Abstract: The present invention discloses an implementation method and a device of a multi-bit ?-? modulation-based digital speaker system. The method comprises, 1) digital format converting; 2) oversampling interpolation filtering; 3) multi-bit ?-? modulating; 4) thermometer coding; 5) multi-channel mismatch shaping; 6) coding format converting; 7) multi-channel digital power-amplifying; 8) driving a speaker array or a multiple voice coil speaker to sound. The device comprises: a digital input interface, an oversampling interpolation filter, a multi-bit ?-? modulator, a thermometer coder, a multi-channel mismatch shaper, a coding format converter, a multi-channel digital power-amplifier, and a speaker array or a multiple voice coil speaker; each portion being connected in proper order.Type: ApplicationFiled: December 2, 2014Publication date: October 20, 2016Applicant: SUZHOU SONAVOX ELECTRONICS CO., LTD.Inventors: DENGYONG MA, JUN YANG, JIANMING ZHOU, GUOQIANG CHAI, YEFENG CAI, YONGSHENG MU
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Patent number: 9363618Abstract: The present invention discloses a method and device for controlling speaker array sound field based on a quadratic residue sequence combination. The method comprises steps of: (1) fragmenting a designated quadratic residue sequence in terms of the number of array elements, to generate a plurality of quadratic residue subsequences; (2) designing an optimal array phase delay vector utilizing these subsequences; (3) controlling transmission signals of multi-element channels according to the optimal phase delay vector to adjust phase delay; (4) sending the multi-channel signals subjected to adjustment to a multi-channel power amplifier, to drive the speaker array to generate uniform sound field. The device comprises a sound source, an optimal phase delay estimator, an optimal phase delay controller, a multi-channel power amplifier and a speaker array. The invention can expand the coverage range of sound field radiated from an array and improve uniformity of the sound field.Type: GrantFiled: May 24, 2013Date of Patent: June 7, 2016Assignee: Suzhou Sonavox Electronics Co., Ltd.Inventor: Dengyong Ma
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Patent number: 9300258Abstract: A method and device for driving a digital speaker based on code conversion are provided in the invention. The method comprises the steps of: (1) converting input format; (2) performing multi-bit ?-? modulation; (3) thermometer code conversion; (4) dynamic mismatch-shaping processing; (5) pulse width modulation code conversion; and (6) controlling on/off status switching of the MOSFET of a full-bridge power amplification network to drive a digital speaker load sound. The device comprises a sound source, an input format converter, a multi-bit ?-? modulator, a thermometer coder, a dynamic mismatch shaper, a code converter, a multi-channel digital amplifier and a digital speaker load which are connected to each other in sequence.Type: GrantFiled: December 3, 2012Date of Patent: March 29, 2016Assignee: Suzhou Sonavox Electronics Co., Ltd.Inventor: Dengyong Ma
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Patent number: 9167345Abstract: A method and device of channel equalization and beam controlling for a digital speaker array system includes (1) converting digital format; (2) performing channel equalization; (3) controlling beam-forming; (4) performing multi-bit ?-? modulation; (5) performing thermometer code conversion; (6) performing dynamic mismatch-shaping processing; and (7) extracting the channel information to send to the digital power amplifier and drive the array sound. A device includes a sound source, a digital converter, a channel equalizer, a beam-former, a ?-? modulator, a thermometer coder, a dynamic mismatch shaper, an extraction selector, a multi-channel digital power amplifier and a speaker array. Each unit connects to each other serially.Type: GrantFiled: May 7, 2012Date of Patent: October 20, 2015Assignee: SUZHOU SONAVOX ELECTRONICS CO., LTD.Inventor: Dengyong Ma
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Publication number: 20150110299Abstract: A method and device for driving a digital speaker based on code conversion are provided in the invention. The method comprises the steps of: (1) converting input format; (2) performing multi-bit ?-? modulation; (3) thermometer code conversion; (4) dynamic mismatch-shaping processing; (5) pulse width modulation code conversion; and (6) controlling on/off status switching of the MOSFET of a full-bridge power amplification network to drive a digital speaker load sound. The device comprises a sound source, an input format converter, a multi-bit ?-? modulator, a thermometer coder, a dynamic mismatch shaper, a code converter, a multi-channel digital amplifier and a digital speaker load which are connected to each other in sequence.Type: ApplicationFiled: November 30, 2012Publication date: April 23, 2015Applicant: Suzhou Sonavox Electronics Co., Ltd.Inventor: Dengyong Ma
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Patent number: 8620005Abstract: The present invention disclosed an all-digital speaker system device based on multi-bit ?-? Modulation, comprising an A/D converter, an interpolation filter, a ?-? modulator, a dynamic mismatch regulator, a differential buffer and a speaker array. The present invention takes advantage of the ?-? modulation technique to effectively reduce the cost and complexity of the hardware realization of the speaker system device, thus realizing the full digitalization of the whole sound transmission link and the integration of the system device with low power dissipation and volume. Furthermore, the system device according to the present invention is provided with a better control ability on the local sound field, thus providing a better practicable method for the voice secret transmission.Type: GrantFiled: June 1, 2011Date of Patent: December 31, 2013Assignee: Suzhou Sonavox Eletronics Co., Ltd.Inventors: Dengyong Ma, Jun Yang, Jianming Zhou, Guoqiang Chai
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Publication number: 20130322635Abstract: The present invention discloses a method and device for controlling speaker array sound field based on a quadratic residue sequence combination. The method comprises steps of: (1) fragmenting a designated quadratic residue sequence in terms of the number of array elements, to generate a plurality of quadratic residue subsequences; (2) designing an optimal array phase delay vector utilizing these subsequences; (3) controlling transmission signals of multi-element channels according to the optimal phase delay vector to adjust phase delay; (4) sending the multi-channel signals subjected to adjustment to a multi-channel power amplifier, to drive the speaker array to generate uniform sound field. The device comprises a sound source, an optimal phase delay estimator, an optimal phase delay controller, a multi-channel power amplifier and a speaker array. The invention can expand the coverage range of sound field radiated from an array and improve uniformity of the sound field.Type: ApplicationFiled: May 24, 2013Publication date: December 5, 2013Inventor: Dengyong Ma
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Publication number: 20130108078Abstract: A method and device of channel equalization and beam controlling for a digital speaker array system includes (1) converting digital format; (2) performing channel equalization; (3) controlling beam-forming; (4) performing multi-bit ?-? modulation; (5) performing thermometer code conversion; (6) performing dynamic mismatch-shaping processing; and (7) extracting the channel information to send to the digital power amplifier and drive the array sound. A device includes a sound source, a digital converter, a channel equalizer, a beam-former, a ?-? modulator, a thermometer coder, a dynamic mismatch shaper, an extraction selector, a multi-channel digital power amplifier and a speaker array. Each unit connects to each other serially.Type: ApplicationFiled: May 7, 2012Publication date: May 2, 2013Applicant: SUZHOU SONAVOX ELECTRONICS CO., LTD.Inventor: Dengyong MA
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Publication number: 20120099740Abstract: The present invention disclosed an all-digital speaker system device based on multi-bit ?-? Modulation, comprising an A/D converter, an interpolation filter, a ?-? modulator, a dynamic mismatch regulator, a differential buffer and a speaker array. The present invention takes advantage of the ?-? modulation technique to effectively reduce the cost and complexity of the hardware realization of the speaker system device, thus realizing the full digitalization of the whole sound transmission link and the integration of the system device with low power dissipation and volume. Furthermore, the system device according to the present invention is provided with a better control ability on the local sound field, thus providing a better practicable method for the voice secret transmission.Type: ApplicationFiled: June 1, 2011Publication date: April 26, 2012Applicant: SUZHOU SONAVOX ELETRONICS CO., LTD.Inventors: Dengyong Ma, Jun Yang, Jianming Zhou, Guoqiang Chai