Vanderbilt University Toshiba IR Test Apparatus Project Final Design Review Ahmad Nazri Fadzal Zamir Izam Nurfazlina Kamaruddin Wan Othman

Problem  Toshiba’s goal is to achieve 100% test coverage on all projects. For this TV, some test coverage was missing in the IR blasting area

Definition of need  Create a test program that can verify the TV is outputting the correct IR signals to devices that are connected through IR blaster cable

Toshiba H93 Digital Integrated TV  a new model HDTV  uses infrared blaster outputs  Uses one remote to control all the devices that are connected to TV

Signal Flow  Remote control sends signal to TV  TV sends electric signal to IR blaster  For this project, we are going to test the signal from TV to other devices IR Blasting area

GLINK  Use to connect cable box and VCR

TheaterNet  Use to connect DVD player

Approach  Set up connection from TV to CPU through IR cable  Design a program that has two modes: - Creating database - Testing mode

Short descriptions

Signal flow from TV to devices

Specification Creating Database The output signals from the television will be analyzed and their characteristics will be stored in a reasonably compact manner  Sampling  Sample at least 4 different brands of DVD and VCR signals  Analyze  Analyze characteristics of signals and known signals will be created  Operator will take sampling signals and store in database  A ‘name’ will be designated for each particular signal

Specification (continued)  Storage  Operator will take sampling signals and store in database  A ‘name’ will be designated for each particular signal  Search capability  Be able to access signals in database

Specification (Continued)  Testing Mode  Program will instruct user to drive the TV using remote control  The program will analyze the signals and compare them with signals from database  The program then will log pass/fail result to user interface and text file.

Specification (continued)  The program will also display the statistics of the test signal comparing with the known signal in the database  Signal length  Position where errors occur  Type of error  Display statistic in table  Graphical display of expected versus failed infrared signal pulse train.

Test Model

Apparatus  Toshiba H93 Digital Integrated TV  Data acquisition board  Programming language software  PC

Data Acquisition Device (DAQ)  Function:  Gathers information in an automated fashion from analog and digital measurement sources.  Uses a combination of PC- based measurement hardware and software to provide a flexible, user- defined measurement system  Converts analog signal to digital patterns signal

Data acquisition board NI PCI 6534NI PCI High-Speed Digital I/O device -Start and Stop Trigger -compatibly with C++ -20MHz maximum transfer rate -clock rate of 20MHz -price $1700 -High-Speed Digital I/O device -Start and Stop Trigger -compatibly with C++ -Up to 2MHz maximum transfer rate -clock rate of 5MHz -price $1000

NI PCI 6533  National Instruments Data Acquisition Device  Model: NI PCI-6533 (DIO-32HS) High Speed Pattern I/O and Handshaking  2 MHz maximum transfer rate  32 digital input output lines  8, 16 or 32 bits transfers  Start and Stop triggering, pattern and change detection  32 MB onboard memory per data path  NI-DAQ driver included

Software AdvantageDisadvantage LabView -recommended software for DAQ board -no basic knowledge -expensive ($2000) Visual basic -compatible software for DAQ -cheap -no basic knowledge Visual C++ -basic knowledge -compatible software for DAQ -cheap -none

PC specifications  PC  Brand: ACER  Operating System: Windows 2000/NT/XP  20 GHz Intel Pentium IV  RAM: 128 MB RAM  4x CD-ROM drive  1 GB free hard disk space

IR Signal  Encode Type – pulse width, space width, and phase/shift.

IR Signal (continued)

IR Signal pulse study  Objective: Learn actual IR signals output from the TV to the devices  Selected DVD brands:  Toshiba  JVC  Selected functions:  STOP  PLAY

Block Diagram

Toshiba DVD PLAY IR Signal IR blaster with LED connected

Toshiba DVD PLAY IR Signal - zoomed in (cont’d)

Toshiba DVD vs. JVC DVD Play Signals Toshiba Signal From IR cable with LED connected JVC Signal From IR cable with LED connected

Toshiba DVD Signals (different functions) STOPPLAY

Toshiba DVD PLAY IR signal (Using universal remote)

Toshiba DVD PLAY IR signal IR Blaster with LED connected Universal remote