Light sensor device controlled with dual-mode master-and-slave MCU application
US10915079B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Apr 17, 2019 |
| Grant date | Feb 9, 2021 |
| Priority date | — |
| Expiry date | Oct 7, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2213/0016
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A light sensor device is provided. It is controlled with a dual-mode master-and-slave microcontroller unit (MCU) application. An MCU is embedded into a light sensor chip. The original dual-mode master-and-slave dual-CPU architectures are combined to be operated as a single-CPU architecture. Since the original circuit pin design is followed, it is possible to be compatible with the old circuit design. The present invention uses a single-CPU architecture to directly control light sensors. Through the configuration of RAM, an inter-integrated circuit bus (I2C I/F) can be redirected to an internal non-volatile memory to switch the operational mode of the light sensor chip from a slave machine to a host machine which switches off the interrupt pin and, then, turns to a GPIO pin. Thus, the present invention provides a simple single-CPU architecture with easy use and effectively-lowered cost.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.