公开(公告)号：US20190141508A1

公开(公告)日：2019-05-09

申请号：US15996837

申请日：2018-06-04

Applicant: MOTOROLA SOLUTIONS, INC.

Inventor： Javier Alfaro ,  Kurt S. Fienberg ,  Daniel Landron ,  Kevin D. Elliott ,  David Corvino ,  Hua Li

IPC: H04W4/90 ,  H04W88/06 ,  H04W52/02 ,  H04M1/725 ,  H04W4/10 ,  H04W40/36 ,  H04W40/02 ,  H04W24/04 ,  H04W36/00

CPC classification number: H04W4/90 ,  H04M1/72527 ,  H04M1/72536 ,  H04M1/72538 ,  H04W4/10 ,  H04W24/04 ,  H04W36/0022 ,  H04W40/02 ,  H04W40/36 ,  H04W52/0296 ,  H04W88/06 ,  Y02D70/00 ,  Y02D70/10 ,  Y02D70/12 ,  Y02D70/126 ,  Y02D70/1262 ,  Y02D70/26

Abstract: A portable communication system (100) maintains mission critical functionality. An accessory (120) and a handset (130) are tethered and interoperate such that the accessory operates as the primary controlling device and the handset operates as a secondary device. The accessory (120) contains a main applications processor (102) that handles non-mission critical functions. The accessory further contains a mission critical processor (104) for handling mission critical functions of transmit and receive audio as well as PTT and emergency. In response to a failure of the mission critical processor (104), the mission critical functions are maintained by handing over the mission critical functions to the non-controlling device in a manner transparent to the user. The handover is triggered in response to status changes of the mission critical processor or as a result of battery depletion. Audio paths are re-routed through backup paths (146b, 148) negating reliance on processors of the accessory (120).

公开(公告)号：US20220029435A1

公开(公告)日：2022-01-27

申请号：US16937377

申请日：2020-07-23

Applicant: MOTOROLA SOLUTIONS, INC.

Inventor： Peter J. Bartels ,  Javier Alfaro ,  Kevin D. Elliott

IPC: H02J7/00

Abstract: Systems and methods for supplying power from a multi-cell battery to a single-cell power management integrated circuit. One implementation of the system includes a voltage converter circuit, a control circuit, and a signal buffer circuit. The voltage converter circuit is configured to scale a positive battery terminal voltage signal received from the multi-cell battery to generate a scaled voltage signal. The control circuit is configured to select one of the scaled voltage signal or a cell voltage signal received from the multi-cell battery. The control circuit is also configured to output a high-impedance single-cell power signal including the selected one of the scaled voltage signal or the cell voltage signal. The signal buffer circuit is configured to buffer the high-impedance single-cell power signal to generate a low-impedance single-cell power signal for a voltage sense pin of the single-cell power management integrated circuit.

公开(公告)号：US10341839B2

公开(公告)日：2019-07-02

申请号：US15996837

申请日：2018-06-04

Applicant: MOTOROLA SOLUTIONS, INC.

Inventor： Javier Alfaro ,  Kurt S. Fienberg ,  Daniel Landron ,  Kevin D. Elliott ,  David Corvino ,  Hua Li

IPC: H04M11/04 ,  H04W4/90 ,  H04M1/725 ,  H04W4/10 ,  H04W40/36 ,  H04W40/02 ,  H04W36/00 ,  H04W24/04 ,  H04W52/02 ,  H04W88/06

Abstract: A portable communication system (100) maintains mission critical functionality. An accessory (120) and a handset (130) are tethered and interoperate such that the accessory operates as the primary controlling device and the handset operates as a secondary device. The accessory (120) contains a main applications processor (102) that handles non-mission critical functions. The accessory further contains a mission critical processor (104) for handling mission critical functions of transmit and receive audio as well as PTT and emergency. In response to a failure of the mission critical processor (104), the mission critical functions are maintained by handing over the mission critical functions to the non-controlling device in a manner transparent to the user. The handover is triggered in response to status changes of the mission critical processor or as a result of battery depletion. Audio paths are re-routed through backup paths (146b, 148) negating reliance on processors of the accessory (120).

公开(公告)号：US11721992B2

公开(公告)日：2023-08-08

申请号：US16937377

申请日：2020-07-23

Applicant: MOTOROLA SOLUTIONS, INC.

Inventor： Peter J. Bartels ,  Javier Alfaro ,  Kevin D. Elliott

IPC: H02J7/00

CPC classification number: H02J7/0047 ,  H02J7/0013

Abstract: Systems and methods for supplying power from a multi-cell battery to a single-cell power management integrated circuit. One implementation of the system includes a voltage converter circuit, a control circuit, and a signal buffer circuit. The voltage converter circuit is configured to scale a positive battery terminal voltage signal received from the multi-cell battery to generate a scaled voltage signal. The control circuit is configured to select one of the scaled voltage signal or a cell voltage signal received from the multi-cell battery. The control circuit is also configured to output a high-impedance single-cell power signal including the selected one of the scaled voltage signal or the cell voltage signal. The signal buffer circuit is configured to buffer the high-impedance single-cell power signal to generate a low-impedance single-cell power signal for a voltage sense pin of the single-cell power management integrated circuit.

公开(公告)号：US10015658B1

公开(公告)日：2018-07-03

申请号：US15599293

申请日：2017-05-18

Applicant: MOTOROLA SOLUTIONS, INC

Inventor： Javier Alfaro ,  Kurt S. Fienberg ,  Daniel Landron ,  Kevin D. Elliott ,  David Corvino ,  Hua Li

IPC: H04M3/00 ,  H04W4/90 ,  H04W4/22 ,  H04W4/10 ,  H04W24/04 ,  H04W52/02 ,  H04W36/00 ,  H04W40/02 ,  H04M1/725 ,  H04W40/36 ,  H04W88/06

CPC classification number: H04W4/90 ,  H04M1/72527 ,  H04M1/72536 ,  H04M1/72538 ,  H04W4/10 ,  H04W24/04 ,  H04W36/0022 ,  H04W40/02 ,  H04W40/36 ,  H04W52/0296 ,  H04W88/06 ,  Y02D70/00 ,  Y02D70/10 ,  Y02D70/12 ,  Y02D70/126 ,  Y02D70/1262 ,  Y02D70/26

Abstract: A portable communication system (100) maintains mission critical functionality. An accessory (120) and a handset (130) are tethered and interoperate such that the accessory operates as the primary controlling device and the handset operates as a secondary device. The accessory (120) contains a main applications processor (102) that handles non-mission critical functions. The accessory further contains a mission critical processor (104) for handling mission critical functions of transmit and receive audio as well as PTT and emergency. In response to a failure of the mission critical processor (104), the mission critical functions are maintained by handing over the mission critical functions to the non-controlling device in a manner transparent to the user. The handover is triggered in response to status changes of the mission critical processor or as a result of battery depletion. Audio paths are re-routed through backup paths (146b,148) negating reliance on processors of the accessory (120).