公开(公告)号：US11240486B1

公开(公告)日：2022-02-01

申请号：US16894592

申请日：2020-06-05

Applicant: Amazon Technologies, Inc.

Inventor： Bo Chen ,  Venkata Sri Krishnakanth Pulla ,  Junrong Yan

IPC: H04N13/296 ,  H04N13/254 ,  H04N13/271 ,  H04N13/282

Abstract: Discrete frequencies and time slots of operation are assigned to each of a plurality of time-of-flight cameras. Where two time-of-flight cameras having overlapping fields of view, whether the time-of-flight cameras are operating at the same frequency or time slot is determined by calculating ratios of zero-value pixels to total numbers of pixels for each depth image captured by the time-of-flight cameras over a selected interval. If the time-of-flight cameras operate at the same frequency or time slot, a plot of the ratios of depth images captured using one time-of-flight camera is erratically sinusoidal. Another time-of-flight camera causing the interference may be identified among time-of-flight cameras operating at the frequency or time slot, based on areas of interest that overlap with the time-of-flight camera, or based on a time at which the time-of-flight cameras began capturing depth images, as compared to a time at which the interference is observed.

公开(公告)号：US10681338B1

公开(公告)日：2020-06-09

申请号：US16144567

申请日：2018-09-27

Applicant: Amazon Technologies, Inc.

Inventor： Bo Chen ,  Venkata Sri Krishnakanth Pulla ,  Junrong Yan

IPC: H04N13/296 ,  H04N13/282 ,  H04N13/271 ,  H04N13/254

Abstract: Discrete frequencies and time slots of operation are assigned to each of a plurality of time-of-flight cameras. Where two time-of-flight cameras having overlapping fields of view, whether the time-of-flight cameras are operating at the same frequency or time slot is determined by calculating ratios of zero-value pixels to total numbers of pixels for each depth image captured by the time-of-flight cameras over a selected interval. If the time-of-flight cameras operate at the same frequency or time slot, a plot of the ratios of depth images captured using one time-of-flight camera is erratically sinusoidal. Another time-of-flight camera causing the interference may be identified among time-of-flight cameras operating at the frequency or time slot, based on areas of interest that overlap with the time-of-flight camera, or based on a time at which the time-of-flight cameras began capturing depth images, as compared to a time at which the interference is observed.

公开(公告)号：US10296580B1

公开(公告)日：2019-05-21

申请号：US14859092

申请日：2015-09-18

Applicant: Amazon Technologies, Inc.

Inventor： Venkata Sri Krishnakanth Pulla ,  Andrew Kenneth Milton ,  Kenneth Thomas Brown ,  Patrick Joseph Armstrong ,  Yasaswi Vempati

IPC: G06F3/00 ,  G06F17/27 ,  G06F17/22

Abstract: Systems and methods are described that relate to processing content, such as web pages, to be rendered and displayed on client computing devices. In one embodiment, a content parsing system may retrieve a content item on behalf of a client computing device, and parse markup language within the content item to generate a binary representation of objects within the content item. The content parsing system may then serialize the binary representation, and transmit the binary representation to the client computing device. The client computing device can then utilize the binary representation to output the content item, without parsing at least a portion of the content item.