Interface between a base module and a detachable faceplate in an in-dash automotive accessory
US6131051A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 5, 1998 |
| Grant date | Oct 10, 2000 |
| Priority date | — |
| Expiry date | Jan 5, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B2219/2637
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
Described herein is an in-dash automotive accessory having a detachable faceplate with a keypad and a medium resolution color graphics display. The graphic display has a rectangular array of addressable pixels. A serial interface is used to transfer data to and from the faceplate. Although the serial interface has a clock rate of only 7.5 MHz, it allows refreshing of a 64.times.256 pixel display panel at a 70 Hz pixel refresh rate. This is accomplished through a variety of techniques, including the use of efficient command code protocol, by packing or compressing pixel intensity data, and by double buffering incoming control messages.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.