公开(公告)号：US10582295B1

公开(公告)日：2020-03-03

申请号：US15385757

申请日：2016-12-20

Applicant: AMAZON TECHNOLOGIES, INC.

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

IPC: H04R1/02 ,  H04R1/28 ,  H04R17/00 ,  H04R1/46 ,  G02B27/01

Abstract: A head-mounted wearable device (HMWD) includes a bone conduction speaker (BCS) to provide audio output to a user wearing the HMWD. The BCS may be mounted within a recess of a temple of the HMWD. During wear a portion of the BCS is in physical contact with a head of the user. In one implementation, a head contact piece may be mounted to the side of the BCS that is proximate to the head. The head contact piece is contoured to maximize the contact area with the head, and may have a cross section that is approximately wedge shaped, with a thicker portion of the wedge proximate to the front of the HMWD. The BCS may include low damping elements to provide protection to the BCS from damage and improve performance, as well as high damping elements to reduce the transfer of vibrations from the BCS to the temple.

公开(公告)号：US10547930B1

公开(公告)日：2020-01-28

申请号：US15385511

申请日：2016-12-20

Applicant: AMAZON TECHNOLOGIES, INC.

Inventor： Xuan Zhong ,  Jianchun Dong ,  Bozhao Tan ,  Han Zhang

IPC: H03G3/20 ,  H04R1/10 ,  H04R3/04 ,  G10L25/84 ,  G02B27/01 ,  H03G3/32 ,  G06F3/041

Abstract: A head-mounted wearable device (HMWD) may incorporate bone conduction speakers (BCS) to generate audio output that is perceptible to a wearer. Due to the mechanical connection between the BCS and the rest of the device, when the output amplitude of the BCSs is too great, the air-conducted audio “leaks” and may be heard by other people. This leakage may result in eavesdropping by, or generate a nuisance to, those other people. The noise level in the environment around the HMWD is determined and used to dynamically adjust the amplitude of the audio output generated by the BCS. This adjustment improves the comfort and intelligibility of the audio output to the wearer while minimizing audio leakage to the surrounding environment.

公开(公告)号：US10750302B1

公开(公告)日：2020-08-18

申请号：US15276649

申请日：2016-09-26

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 user interface for a head-mounted wearable device provides many functions to a user. Information about whether the device is being worn (donned) or not worn (doffed) may be acquired in several ways. Force sensing resistors in the device may provide output indicative of the pressure associated with wearing the device. Output from a bone conduction (BC) microphone may be analyzed to determine if the device is in use. Piezoelectric BC speakers typically used to present audio output to a wearer provide changes in voltage corresponding to a change in pressure associated with wearing the device. A BC speaker may emit a signal that is detected by the BC microphone, with changes in the signal strength being used to determine if the device is donned or doffed.