Browse Prior Art Database

Source Drivers with cascaded connection and diagnostic capability

IP.com Disclosure Number: IPCOM000013379D
Original Publication Date: 2000-Oct-01
Included in the Prior Art Database: 2003-Jun-18
Document File: 2 page(s) / 50K

Publishing Venue

IBM

Abstract

This invention provides the simple video data transfer method between the LCD controller and LCD X-drives.

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Source Drivers with cascaded connection and diagnostic capability

    This invention provides the simple video data transfer method between the LCD controller
and LCD X-drives.

This method is to add the output ports of X-Driver for transfer the
data from the controller to the next driver in order to avoid
complex wiring from the controller to the each X-drivers
,EMI noise and signal quality degradations.

This data output ports of X-driver enable to make cascade connection of
all X-drivers, and to get the last data from the the end of X-drives
for the diagnostics of data transfer system.

This inventions are
1) X-Driver(Source Driver) which has the input/output port
to make cascade connection.
2) Diagnostics mechanism using the X-drivers output port feedback.
Most data transfer methods between the X-drivers and the controller
are bus connection. In this case, it is not easy to increase the
number of X-drivers controlled by one controller.

It is easy to increase the X-drivers with cascade connection by this invention
method.

Also it is easy to reduce the number of signals from the controller
using higher transfer rate, because this method uses one to one signal connection.

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