公开(公告)号：US10535364B1

公开(公告)日：2020-01-14

申请号：US15260220

申请日：2016-09-08

Applicant: AMAZON TECHNOLOGIES, INC.

Inventor： Xuan Zhong ,  Bozhao Tan ,  Jianchun Dong ,  Chia-Jean Wang

IPC: G10L25/78 ,  G10L25/93 ,  G10L25/84 ,  G10L25/09 ,  G10L21/0216

Abstract: A head-mounted wearable device incorporates a transducer that operates as a bone conduction (BC) microphone. Vibrations from a user's speech are transferred through the head of the user to the BC microphone. An air conduction (AC) microphone detects sound transferred via air. Signals from the BC microphone and the AC microphone are compared to determine if a common signal is present in both. For example, both signals may have a cross-correlation that exceeds a threshold value. Based on the comparison, voice activity data is generated that indicates the user wearing the device is speaking.

公开(公告)号：US10950217B1

公开(公告)日：2021-03-16

申请号：US15839472

申请日：2017-12-12

Applicant: AMAZON TECHNOLOGIES, INC.

Inventor： Jianchun Dong ,  Xuan Zhong ,  Chun Sik Jeong ,  Zhen Xu ,  Chung-Ling Hsu ,  Jung Sik Yang

IPC: G10K11/178 ,  G02B27/01 ,  H04R1/10 ,  H04R1/46

Abstract: A head-mounted wearable device (HMWD) provides audio output using acoustic quadrupole units (AQU). The AQU produces an acoustic pattern having a first region and a second region. The first region has a first phase and the second region has a second phase that is opposite the first phase. A major axis extending through the regions is directed generally upwards from the ear canal of the user. The ear of the user is within the first region. The second region is directed upward. Bystanders are within an acoustically null region of the acoustic pattern. The acoustically null region is perpendicular to the major axis. Within the acoustically null region, the sound intensity is reduced due to destructive interference between the first phase and the second phase. As a result, the user wearing the HMWD is able hear audio output while audio amplitude perceived by the bystanders is significantly reduced.

公开(公告)号：US10904667B1

公开(公告)日：2021-01-26

申请号：US15925511

申请日：2018-03-19

Applicant: AMAZON TECHNOLOGIES, INC.

Inventor： Xuan Zhong ,  Yuna Hu ,  Chun Sik Jeong ,  Zhen Xu ,  Jung Sik Yang ,  Shahram Talakoub ,  Jianchun Dong

IPC: H04R5/033 ,  H04R5/04 ,  G02C11/00

Abstract: A head-mounted wearable device (HMWD) with a form factor of eyeglasses incorporates a compact audio module with transducers that may be operated as an acoustic dipole or acoustic quadrupole. The audio module provides ducts that convey sound with a particular phase from a transducer to particular output ports. The phase of sound emitted from a first output port is opposite to the phase of sound emitted from a second output port. The audio module may include a pair of transducers, enabling operation as an acoustic dipole or quadrupole. The ducts are integrated into elements of the structure of the audio module, minimizing the overall size of the audio module.

公开(公告)号：US10674257B1

公开(公告)日：2020-06-02

申请号：US15084422

申请日：2016-03-29

Applicant: AMAZON TECHNOLOGIES, INC.

Inventor： Xuan Zhong ,  Jung Sik Yang ,  Jianchun Dong ,  Chia-Jean Wang ,  Oliver Huy Doan

IPC: G02C1/00 ,  H04R1/46 ,  H04R17/02 ,  H04R1/02

Abstract: A head-mounted wearable device incorporates a transducer into a nosepiece. Vibrations from the user's speech are transferred through the bridge of the nose and are detected by the transducer to produce an audio signal. In one implementation, a nose plate with a pair of attached nosepieces is mounted to a transducer, such as an accelerometer. The nose plate may be affixed to a front frame of the head-mounted wearable device using a motion limiter mechanism.

公开(公告)号：US10659868B1

公开(公告)日：2020-05-19

申请号：US15472038

申请日：2017-03-28

Applicant: AMAZON TECHNOLOGIES, INC.

Inventor： Zhen Xu ,  Chun Sik Jeong ,  Han Zhang ,  Jung Sik Yang ,  Xuan Zhong ,  Jianchun Dong ,  Niranjan Madan Mohan Bhatia

IPC: H04R25/00 ,  H04R1/10 ,  G02C11/00 ,  G02B27/01

Abstract: A head-mounted wearable device (HMWD) may be fashioned that includes temples that pass near each ear of the user. A temple may incorporate a bone conduction speaker (BCS) to provide audio output to the user. During wear, a portion of the BCS is in physical contact with a head of the user to transfer the vibrations from the BCS to the user. To accommodate different head shapes and sizes, a head contact piece may be mounted to the BCS. The user may add, remove, or swap the head contact piece from an assortment of such pieces to find a profile that is comfortable to the wearer and improves performance of the BCS. The head contact piece may be magnetically affixed, allowing for easy changeout.

公开(公告)号：US11089416B1

公开(公告)日：2021-08-10

申请号：US16923423

申请日：2020-07-08

Applicant: AMAZON TECHNOLOGIES, INC.

Inventor： Xuan Zhong ,  Chia-Jean Wang ,  Bozhao Tan ,  Han Zhang ,  Jianchun Dong ,  Geng Ye

IPC: H04R29/00 ,  H04R1/02 ,  G06F3/16 ,  H04R17/00

Abstract: A head-mounted wearable device provides many functions to a user. The functions may be provided based in part on whether the device is being worn (donned) or not worn (doffed). Force sensing resistors in the device provide output indicative of forces associated with wearing the device. A time series of values indicative of the magnitude of a force may be determined. An increase or decrease in force values measured at different times may indicate that the device has been donned or doffed, respectively. If a subsequent force value does not differ substantially from a previous force value, this may indicate that the device has remained donned or doffed.

公开(公告)号：US10701480B1

公开(公告)日：2020-06-30

申请号：US15386164

申请日：2016-12-21

Applicant: AMAZON TECHNOLOGIES, INC.

Inventor： Jung Sik Yang ,  Xuan Zhong ,  Jianchun Dong ,  Zhen Xu

IPC: H04R9/06 ,  H04R1/46 ,  H04R1/28 ,  H04R1/02 ,  G02B27/01 ,  G02C11/00 ,  G02C5/18 ,  G02C5/14

Abstract: A head-mounted wearable device (HMWD) includes a plurality of microphones. These microphones may be used to acquire audio data produced by the user, such as speech, or sound from the ambient environment. In one implementation, a first air conduction (AC) microphone is emplaced at a bridge of the nose of the HMWD, a second AC microphone at a hinge, and a bone conduction (BC) microphone is positioned at a distal end of one of the temples of the HMWD. For example, the BC microphone may be located in the left temple proximate to the apex of the user's ear. A semi-rigid structure may provide mechanical coupling between the user's head and the BC microphone.

公开(公告)号：US10904669B1

公开(公告)日：2021-01-26

申请号：US16712299

申请日：2019-12-12

Applicant: AMAZON TECHNOLOGIES, INC.

Inventor： Shahram Talakoub ,  Jianchun Dong ,  Peng Zhang ,  Yuwen Su ,  Xuan Zhong

IPC: H04R1/32 ,  H04R5/04 ,  H04R3/04 ,  H03G5/16 ,  H04S7/00 ,  G02B27/01 ,  H04R1/02 ,  H04R1/10 ,  H04R1/20 ,  H04R3/12

Abstract: A head-mounted wearable device (HMWD) provides audio output from a first speaker that is driven with a first signal and a second speaker that is driven with a second signal. Based on a volume level setting, an equalization profile and inversion frequency are determined. The equalization profile selectively amplifies or attenuates particular frequencies or ranges of frequencies. Those frequencies in the second signal that are above the inversion frequency have their amplitude inverted, relative to the first signal. When driven by the first signal and the second signal, the first speaker and the second speaker operate as acoustic dipoles below the inversion frequency and acoustic quadrupoles above the inversion frequency. Sound from the first and second speakers with frequencies above the inversion frequency exhibits destructive interference. As a result, the user wearing the HMWD is able hear audio output while audio amplitude perceived by the bystanders is significantly reduced.

公开(公告)号：US10747026B1

公开(公告)日：2020-08-18

申请号：US15472000

申请日：2017-03-28

Applicant: AMAZON TECHNOLOGIES, INC.

Inventor： Han Zhang ,  Zhen Xu ,  Xuan Zhong ,  Eliot Kim ,  Chung-Ling Hsu ,  Jianchun Dong ,  Jung Sik Yang

IPC: G02C11/00 ,  G02C5/14 ,  H04R1/02

Abstract: A head-mounted wearable device (HMWD) may be fashioned that includes temples that pass near each ear of the user. To accommodate different head shapes and sizes, a head contact piece may be mounted to the temple. Head contact pieces with different profiles may be used to improve user comfort, aid in retaining the HMWD on the user's head, improve performance of output devices such as bone conduction speakers, and so forth.

公开(公告)号：US10699691B1

公开(公告)日：2020-06-30

申请号：US15637532

申请日：2017-06-29

Applicant: Amazon Technologies, Inc.

Inventor： Geng Ye ,  Zhen Xu ,  Haoxing Zhang ,  Bozhao Tan ,  Xuan Zhong ,  Jianchun Dong

IPC: G10K11/178 ,  H04R3/00 ,  G02B27/01 ,  G02C5/14 ,  G02C11/00 ,  G02C5/22

Abstract: A head-mounted wearable device (HMWD) may incorporate bone conduction speakers (BCS) to generate audio output that is perceptible to a wearer. During operation, vibrations of the BCS may produce sound in the surrounding air that is perceptible to bystanders. An active noise cancellation module monitors the output and generates cancellation audio that is out of phase with the sound leaked by the BCS. An air conduction speaker emits the cancellation audio, producing destructive acoustic interference to the leaked sound. As a result, the user of the HMWD is able to hear audio clearly while bystanders are not.