Coretronic PBP2 User Manual

DLP® Products for Optoma

Interactive Pen and Interactive Module user manual

Interactive Pen -- AirDraw II Interactive Module -- PBM

User's Guide

Product Specification

Preliminary

TI Confidential - NDA Restrictions

PointBlank Product Specification, Rev A

Contents

CONTENTS .................................................................................................................................... IV

TABLES ..........................................................................................................................................V

FIGURES......................................................................................................................................... V

1 SCOPE ..................................................................................................................................... 1

2 APPLICABLE DOCUMENTS .................................................................................................. 1

3 OVERVIEW .............................................................................................................................. 2

4 DETAILED DESCRIPTION...................................................................................................... 3

4.1 POINTBLANK HARDWARE..................................................................................................... 3

4.1.1 PointBlank FPGA....................................................................................................... 5

4.1.2 PointBlank Radio Transceiver .(PBM)........................................................................ 5

4.1.3 PointBlank Pointing Device .(AirDraw II).......................................................................... 5

4.2 POINTBLANK WIRELESS....................................................................................................... 6

4.3 POINTBLANK SOFTWARE ..................................................................................................... 6

4.4 OPERATING CONDITIONS .....................................................................................................7

TI Confidential – NDA Restrictions

IV

PointBlank Product Specification, Rev A

Tables

TABLE 1 POINTBLANK OPERATING CONDITIONS ...................................................................7

Figures

FIGURE 1 POINTBLANK SYSTEM DIAGRAM .............................................................................2

FIGURE 2 POINTBLANK DDP2431 ELECTRONICS DIAGRAM.................................................. 3

FIGURE 3 POINTBLANK DDP2230 ELECTRONICS DIAGRAM.................................................. 4

TI Confidential – NDA Restrictions

V

Federal Communication Commission Interference Statement

This equipment has been tested and found to comply with the limits for

a Class B digital device, pursuant to Part 15 of the FCC Rules. These

limits are designed to provide reasonable protection against harmful

interference in a residential installation. This equipment generates,

uses and can radiate radio frequency energy and, if not installed and

used in accordance with the instructions, may cause harmful

interference to radio communications. However, there is no guarantee

that interference will not occur in a particular installation. If this

equipment does cause harmful interference to radio or television

reception, which can be determined by turning the equipment off and

on, the user is encouraged to try to correct the interference by one of

the following measures:

- Reorient or relocate the receiving antenna.

- Increase the separation between the equipment and receiver.

- Connect the equipment into an outlet on a circuit different from that

to which the receiver is connected.

- Consult the dealer or an experienced radio/TV technician for help.

FCC Caution: Any changes or modifications not expressly approved by

the party responsible for compliance could void the user's authority to

operate this equipment.

This device complies with Part 15 of the FCC Rules. Operation is

subject to the following two conditions: (1) This device may not cause

harmful interference, and (2) this device must accept any interference

received, including interference that may cause undesired operation.

Industry Canada Statement

This device complies with RSS-210 of the Industry Canada Rules. Operation is subject to the following two conditions:

1) this device may not cause interference and

2) this device must accept any interference, including interference that may cause undesired operation of the device

IMPORTANT NOTE:

IC Radiation Exposure Statement:

This equipment complies with IC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance 20cm between the radiator & your body.

i

NCC :

FORPBM

FORAirDraw II

ID

PointBlank Product Specification, Rev A

1 Scope

This document specifies the functional and performance parameters of the PointBlank enabled DLP® component set. PointBlank is supported on DDP2230 and DDP243x platforms by adding additional hardware and software components to the reference design. These additions are defined in this document.

2 Applicable Documents

• DDP2230 Reference Design Documentation

• DDP2431 Reference Design Documentation

TI Confidential – NDA Restrictions

1

PointBlank Product Specification, Rev A

3 Overview

A PointBlank enabled DLP® projector provides an interactive white board capability without requiring a white board or special screen. The PointBlank system is comprised of a laptop or desktop computer with USB mouse capability, a PointBlank enabled DLP® projector and a pointing device with a light sensor and RF transmitter. The PointBlank™ system is depicted in Figure 1.

projected im a ge

with proprietary

PointBlank encoding

light sensor

measurement

PointBlank-enabled

DLP®projector

mouse via

USB HID

image source

(VGA, DV I)

The computer sources an image to the projector over VGA, DVI/HDMI or another interface. The PointBlank enabled projector displays the source image with special encoded patterns that the pointing device measures and transmits back to the projector over the RF link. These measurements allow the PointBlank projector to determine the screen location that the pointing device is directed at. Once the pointer location is known, the projector software sends it to the computer using the USB Human Interface Device (HID) interface. Standard Microsoft drivers intercept these coordinates just as a standard mouse device would send them and interacts with the application being projected accordingly. While any mouse driven application can interact with the PointBlank projector, additional application software can be developed to enhance how the pointing device can interact with the computer.

The system does not require any calibration and can work over a wide range of screen lumens, screen sizes, pointing device distan ce from screen and ambient lighting conditions. It also works

PBM AirDraw II

feedback via RF

PC or laptop

Figure 1 PointBlank System Diagram

pointing

pointing denvice

pointing nen vce

Interactive P

en

oint

TI Confidential – NDA Restrictions

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PointBlank Product Specification, Rev A

for any input computer source supported by the projector and independent of projector settings such as keystone, scaling mode, etc.

The PointBlank patterns are not visible to the viewer, except for an increase in the black level and a small decrease in the red, green and blue lumens. Depending on the DLP sequence approach, there can be some color distortion of the black level as well. Since the PointBlank patterns affect the projector contrast and lumens, a non PointBlank mode can also be supported and is recommended to maintain projector specifications relative to brightness, contrast and color points.

4 Detailed Description

4.1 PointBlank Hardware

The PointBlank hardware additions to the DDP2431 and DDP2230 reference designs are shown

Figure 2 and Figure 3, respectively. They include a PointBlank FPGA inserted between the

in DDP ASIC and the DMD, a RF radio transceiver and some changes to the GPIOs. Due to the additional software memory required for the PointBlank functionality either SRAM or SDRAM is required for DDP2230 and SRAM is required for DDP2431.

Monitor

Video

Component

S-Video

Composite

HDMI/DVI

VGA

USB

RS-232

AFE1000

HDMI/DVI

Receiver

SRAM

30

Data

CSP I2C

I2C

Included in DLP Component Set along with DMD

Components Added for PointBlank

Figure 2 PointBlank DDP2431 Electronics Diagram

EEPROM

Temp

FLASH

Sequence

OEM ARM

Software

TI ARM

Software

16

DDP2431

DDR2

32MHz

32MHz32MHz

Control

Control SPI_1, GPIO

16 pair

32

SPI_0

3.3

PointBlank

Radio

Transceiver

PointBlank

FPGA

PMD1000

12V

Regulators PointBlank

FPGA

DAD2000

DMD

1.2, 2.5, 3.3, 5, 1.8, 1.8PLL

1.2, 2.5, 3.3, 5, 1.8, 1.8PLL POSENSE, PWRGOOD

POSENSE, PWRGOOD

Fan #1, #2, #3

Fan #1, #2, #3 Motor Drive

Motor Drive

1.2, 2.5

TI Confidential – NDA Restrictions

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PointBlank Product Specification, Rev A

Monitor

Video

Component

HDMI/DVI

S-

S-Video

Composite

VGA

USB

RS-232

-

ADC

HDMI/DVI

Receiver

Video

Video Decoder

Decoder

100MHz

400MHz

20MHz

CDCDLP223

XCG

20MHz

320MHz

Control

SPI_1, GPIO

16 pair

32

PointBlank

Radio

Transceiver

PointBlank

SDRAM

Or

SRAM

Data

I2C

FLASH

Sequence

Sequence OEM ARM

Software

TI ARM

Software

27

16

DDP2230

XDR

DRAM

8

FPGA

SPI_0

BT656

SPI_0

PMD1000 & 1.8V Regulator

Regulators PointBlank

EEPROM

Temp

12V

3.3

FPGA

Included in DLP Component Set along with DMD

Components Added for PointBlank

Figure 3 PointBlank DDP2230 Electronics Diagram

DAD2000

DMD

DC Supplies POSENSE, PWRGOOD

Fan #1, #2, #3

Motor Drive

1.2, 2.5

TI Confidential – NDA Restrictions

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PointBlank Product Specification, Rev A

4.1.1 PointBlank FPGA

The PointBlank FPGA receives LVDS image data from the DDP ASIC. Under control of the software and sequences in the DDP ASIC, it inserts the PointBlank patterns into the normal image data and outputs it to the DMD.

The LVDS inputs in the FPGA do not have internal termination resistors so external parallel termination must be added on the PCB. TI recommends using filled vias for these signals at the FPGA so the termination resistors can be placed across the vias.

The FPGA is a LFE2-12E-5FN256CB9 made by Lattice Semiconductor. Firmware and an I/O spec for the part are available on the PointBlank Knowledge Base. Further information on the FPGA is available on the Lattice Semiconductor website.

The FPGA requires 3.3V, 2.5V and 1.2V. The 3.3V is powered directly from the 3.3V from the PMD1000. The 2.5V and 1.2V should be generated with linear regulators from the 3.3V. See the reference design for details.

4.1.2 PointBlank Radio Transceiver (PBM)

The TI reference design uses an eZ430-RF2500 2.4GHz radio transceiver development board. This board’s main components are a TI CC2500 2.4GHz transceiver and a TI MSP430F2274. Documentation for this board and its components is available on the TI website (www.ti.com). Additional information on antenna selection is also available.

The DDP ASIC communicates with the radio board with a SSP (SPI) bus 1. The MSP430 is the master and the DDP ASIC is the slave. The DDP ASIC can request data from the MSP430 by asserting a GPIO pin (request to send). See the DDP2230 PointBlank reference design schematic for details on the connections between the DDP2230 and the eZ430-RF2500 board.

4.1.3 PointBlank Pointing Device (AirDraw II)

The PointBlank pointing device utilizes a photodiode to sense the amount of light in the projected image. Optics in the pointing device reduces the field of view of the photodiode so the pointing device sees a relatively small portion of the screen from a typical user distance. TI uses a 36mm lens with a 2mm aperture located at the focal length of the lens just in front of the photodiode. For a 75in diagonal XGA image and the pointing device located 55 in from the screen the spot size has a horizontal diameter of about 3.7in or 62 pixels. It is important to minimize any light reflections inside the optics housing as these can degrade performance at the edges of the screen.

Current from the photodiode is converted to a voltage with a trans-impedance amplifier. The output of the trans-impedance amplifier is high passed filtered to reject DC and 120Hz ambient light sources. After filtering the signal is gained up with a programmable gain amplifier. The output is then sampled with an ADC in a MSP430. The measurements are sent to the projector over a 2.4GHz wireless link. The pointing device utilizes a TI CC2500 radio transceiver to transmit messages and receive configuration. See the reference design for more details on the pointing device electronics.

TI Confidential – NDA Restrictions

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PointBlank Product Specification, Rev A

4.2 PointBlank Wireless

The PointBlank wireless interface is a peer to peer protocol between the projector and one or more pointing devices. The radio operates in the 2.4GHz ISM band and is based on TI’s SimpliciTI network protocol. At the start of operation the projector and pointing device are put in a pairing mode to establish a link. Once linked the radio transceiver in the projector receives measurement data from the PointBlank pointing device and can send configuration data to the PointBlank pointing device.

Since the radio uses the 2.4GHz ISM band there is potential for interference from other wireless devices operating in the same band such as wireless LAN (WLAN), Zigbee, Bluetooth, Wireless USB, wireless phones, microwave ovens and others. The PointBlank wireless protocol utilizes multiple channels and automatically selects the channel with the least interference.

4.3 PointBlank Software

The PointBlank software includes special versions of the DDP ASIC API and application software and DLP composer libraries. In addition, software API and application code are provided for the MSP430 in the pointing device and projector.

TI Confidential – NDA Restrictions

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Coretronic PBP2 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual