公开(公告)号：US09651405B1

公开(公告)日：2017-05-16

申请号：US14640376

申请日：2015-03-06

Applicant: Apple Inc.

Inventor： Baboo V. Gowreesunker ,  Joseph William Colosimo ,  Vladimir Fedorov

IPC: G01D5/347

CPC classification number: G01D5/3473 ,  G01D5/34715 ,  G01D5/34776 ,  G05G9/047 ,  G06F3/0362

Abstract: A light source in a rotary optical encoder can illuminate a pattern on a rotatable shaft and an optical sensor can detect either the light that is reflected or transmitted based on the pattern. A sampling rate of the optical sensor is dynamically adjusted based on a rotational speed of the rotatable shaft. A pulse rate of the light source may also be dynamically adjusted based on the sampling rate of the optical sensor.

公开(公告)号：US11571135B1

公开(公告)日：2023-02-07

申请号：US16917824

申请日：2020-06-30

Applicant: Apple Inc.

Inventor： Joseph William Colosimo ,  Tao Shui ,  Brian R. Land

IPC: A61B5/024 ,  A61B5/1455 ,  A61B5/00 ,  G01V8/20

Abstract: An optical sensor can be multiplexed for different clients/features including estimating information or characteristics of a user's physiological signals. Additionally, the clients/features can include estimating information or characteristics independent from a user's physiological signals. As the number of clients increase and/or as the requirements for the clients increase, flexibility can be provided to accommodate the various clients. Parallelization of the optical sensor can be used to improve performance as the number of clients increase. For example, the hardware and software architecture can assemble patterns of time slots that measure all desired light paths for the multiple clients and distribute the corresponding measurements to each client according to the client requests. In some examples, the scanning sequence can be represented by frames including slots associated with multiple clients to compress the representation for larger or more complex scan sequences.

公开(公告)号：US10302465B2

公开(公告)日：2019-05-28

申请号：US15594834

申请日：2017-05-15

Applicant: Apple Inc.

Inventor： Baboo V. Gowreesunker ,  Joseph William Colosimo ,  Vladimir Fedorov

IPC: G01D5/347 ,  G05G9/047 ,  G06F3/0362

Abstract: A light source in a rotary optical encoder can illuminate a pattern on a rotatable shaft and an optical sensor can detect either the light that is reflected or transmitted based on the pattern. A sampling rate of the optical sensor is dynamically adjusted based on a rotational speed of the rotatable shaft. A pulse rate of the light source may also be dynamically adjusted based on the sampling rate of the optical sensor.

公开(公告)号：US10102176B2

公开(公告)日：2018-10-16

申请号：US14616550

申请日：2015-02-06

Applicant: Apple Inc.

Inventor： Dong Zheng ,  Joseph William Colosimo ,  Venkata Siva Sunil Kumar Reddy Bommu

IPC: H05K7/10 ,  G06F3/00 ,  G06F13/42 ,  G06F13/40

Abstract: Methods and apparatus for enabling rapid transactions over a speed limited bus are disclosed. In one exemplary embodiment of the present disclosure, a host controller and an application specific integrated circuit (ASIC) are connected via an Inter-Integrated Circuit (I2C) Bus that is further adapted to enable a simplified signaling scheme. Unlike traditional I2C bus transactions which are flexible but speed limited, the simplified signaling scheme reduces bus overhead and enables rapid transactions. In an exemplary context, the simplified signaling scheme enables the ASIC to rapidly configure a series of photodiodes with different channel gain parameters so as to, for example, measure heartbeats by visually detecting a pulse within human flesh.

公开(公告)号：US20170248446A1

公开(公告)日：2017-08-31

申请号：US15594834

申请日：2017-05-15

Applicant: Apple Inc.

Inventor： Baboo V. Gowreesunker ,  Joseph William Colosimo ,  Vladimir Fedorov

IPC: G01D5/347 ,  G05G9/047 ,  G06F3/0362

CPC classification number: G01D5/3473 ,  G01D5/34715 ,  G01D5/34776 ,  G05G9/047 ,  G06F3/0362

Abstract: A light source in a rotary optical encoder can illuminate a pattern on a rotatable shaft and an optical sensor can detect either the light that is reflected or transmitted based on the pattern. A sampling rate of the optical sensor is dynamically adjusted based on a rotational speed of the rotatable shaft. A pulse rate of the light source may also be dynamically adjusted based on the sampling rate of the optical sensor.

公开(公告)号：US20160232124A1

公开(公告)日：2016-08-11

申请号：US14616550

申请日：2015-02-06

Applicant: Apple Inc.

Inventor： Dong Zheng ,  Joseph William Colosimo ,  Venkata Siva Sunil Kumar Reddy Bommu

IPC: G06F13/42 ,  G06F13/40

CPC classification number: G06F13/4282 ,  G06F13/4031 ,  G06F13/4054

Abstract: Methods and apparatus for enabling rapid transactions over a speed limited bus are disclosed. In one exemplary embodiment of the present disclosure, a host controller and an application specific integrated circuit (ASIC) are connected via an Inter-Integrated Circuit (I2C) Bus that is further adapted to enable a simplified signaling scheme. Unlike traditional I2C bus transactions which are flexible but speed limited, the simplified signaling scheme reduces bus overhead and enables rapid transactions. In an exemplary context, the simplified signaling scheme enables the ASIC to rapidly configure a series of photodiodes with different channel gain parameters so as to, for example, measure heartbeats by visually detecting a pulse within human flesh.

Abstract translation: 公开了一种用于实现在限速总线上的快速交易的方法和装置。 在本公开的一个示例性实施例中，主机控制器和专用集成电路（ASIC）经由内部集成电路（I2C）总线连接，所述集成电路总线进一步适于实现简化的信令方案。 与传统的I2C总线事务不同，传统的I2C总线事务灵活但速度有限，简化的信令方案可以减少总线开销并实现快速交易。 在示例性上下文中，简化的信令方案使ASIC能够以不同的信道增益参数快速配置一系列光电二极管，以便例如通过目视检测人肉内的脉搏来测量心跳。