Car electronic control system & method for controlling the same
US5744874A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | May 22, 1996 |
| Grant date | Apr 28, 1998 |
| Priority date | — |
| Expiry date | May 22, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/92
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A car remote control system utilizing a signal in the form of electromagnetic wave or infrared ray called `keyless entry`. When receiving a predetermined wake-up signal, an MPU is once operated even when the received input signal is a noise signal to perform only judging operation of whether or not the input signal is normal. Only when judging that the input signal is a normal wake-up signal, the MPU controllably causes an electronic circuit to be shifted to a usual operation mode. When judging that the input signal is the noise signal prior to full input of the tuner signal, the MPU immediately shifts to a sleep mode. Thereby current consumption of an electronic control circuit can be suppressed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.