Can circuit structure and vehicle diagnostic device including the same
US11548456B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 8, 2021 |
| Grant date | Jan 10, 2023 |
| Priority date | — |
| Expiry date | Feb 1, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2012/40273
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A CAN circuit structure and a vehicle diagnostic device are provided. The CAN circuit structure includes: a pair of data buses on which differential signals are transmitted; a CAN transceiver operating in a first voltage domain; a clamp circuit disposed between the CAN transceiver and the data buses for clamping a high level or a low level of the differential signals; a CAN controller operating in a second voltage domain; and a signal isolation circuit disposed between the CAN transceiver and the CAN controller for isolating the first voltage domain from the second voltage domain. The circuit allows for the use of a standard CAN transceiver chip that meets a general standard in a special CAN circuit structure, thus effectively reducing manufacturing costs of related devices.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.