Grayhill Multi-Touch Ring Encoder - Software Development Ki Instrukcja Użytkownika Pobierz pdf (Strona 13)

Multi-Touch Ring Encoder Software Development Kit User’s Guide v3.0

For the discussion of the components of the MTRE see the block diagram of

the MTRE shown below:

USB – I/O Interface

The MTRE has a full speed USB device interface. Data that is transmitted

from the MTRE to the host includes the following: the raw touch positions,

proximity status, encoder (outer ring) changes, and pushbutton status. Data

can be sent to the MTRE to set the current touchpad/proximity mode, or

change the backlight or highlight on - off or control the brightness.

In addition to the USB connector, a redundant output is provided that

contains the quadrature output I/O from the encoder and the pushbutton

status.

Knob Section

Encoder Section

Base Section

Touchscreen

Stem

Touchscreen

Controller

Proximity

Sensor

LED

Controller

Emitter

Detector

Switching

Power Supply

Push-button

Microcontroller

Power

USB

Emitter

Quadrature

Push-button

1 2 ... 8 9 10 11 12 13 14 15 16 17 18 19

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Grayhill Multi-Touch Ring Encoder - Software Development Ki Instrukcja Użytkownika Strona 13