Interface between a base module and a detachable faceplate in an

Details Interface between a base module and a detachable faceplate in an Interface between a base module and a detachable faceplate in an

1998-01-05

2000-10-10

Gordon, Paul P.

Data processing: generic control systems or specific application

Generic control system, apparatus or process

Having operator control interface

700 17, 700 86, 700 85, 250368, 250366, 245428, 245429, 307 101, 307 102, G05B 1500

Patent

active

061310514

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.

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