ReQuest Multimedia VideoReQuest User manual

Communication Protocol Guide
Version 1.1.2
IR, RS-232, and Ethernet Interface Guide

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VideoReQuest with a Zektor or Key Digital Switch
1. Connect the VideoReQuest Video output to Input 1 of the switch.
2. Connect the Audio and Video from DVD Changers 1-3 to Inputs 2-4.
3. Connect the RS-232 cable from the DVD changers to Ports 1–3 of the VideoReQuest.
4. Connect Port 4 of the VideoReQuest to the RS-232 Port of the switch.
5. Set the Video Switch setting on the VideoReQuest to the switch you have by going to
Menu

Configuration

Video Options

Video Switch on the VideoReQuest GUI.
DIGITAL COAX
OPTICAL
GR EE
N
RED
BLU E
OUTPUT 1
To A/V Receiver and or
Video Display
1. VideoReQuest and Direct RS-232 Control of Switchers
and Receivers
Component Switcher
Recommended
Zektor HDS4.2 w/RS-232 (shown)
Key Digital KD-SW4x1
RS232
CONTROL
Sony DVP-CX777ES Son y D VP -C X7 77 E S
RS232 CONTROL
GR EE
NBLUE
RED

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VideoReQuest with Xantech Control
1. Connect the VideoReQuest Video output to the receiver (Can be Composite, S-Video, or
Component).
2. Connect the Audio and Video from DVD Changers 1-3 to Inputs 2-4.
3. Connect the RS-232 cable from the DVD changers to Ports 1–3 of the VideoReQuest.
4. Connect Port 4 of the VideoReQuest to the Xantech RS232IR module.
5. Set the Video Switch setting on the VideoReQuest to Xantech IR Blaster by going to
Menu

Configuration

Video Options

Video Switch on the VideoReQuest GUI.
6. Connect the IR emitter or plug to the receiver.
7. Using Xantech Dragon Drop-IR software, load receiver codes. First code is for VideoReQuest.
Code 2- 4 is for DVD changer 1-3.

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VideoReQuest with Pronto
1. Connect the VideoReQuest Audio and Video to the receiver (Can be Composite, S-Video, or
Component).
2. Connect the Audio and Video from DVD Changers 1-3 to Inputs 2-4.
3. Connect the RS-232 cable from the DVD changers to Ports 1–3 of the VideoReQuest.
4. Program the Pronto with the VideoReQuest sample program. Program the VRQ, DVD, Play, Stop,
and Pause command to the appropriate receiver command.

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T ABLE OF C ONTENTS
Table of Contents.................................................................................I
Revision History................................................................................. II
Introduction ....................................................................................... 1
Conventions Used ............................................................................ 1
Part 1: IR Control................................................................................ 2
Rear IR Pinout ................................................................................. 2
Learning IR Codes into Other Systems............................................. 2
List of Advanced IR Commands........................................................ 2
Part 2: Serial/Ethernet Protocol ......................................................... 3
Rear Serial Port Pinout .................................................................... 3
Serial Cable Pinout........................................................................... 3
COM Settings ................................................................................... 3
Using Ethernet ................................................................................. 3
Communicating with the VideoReQuest ........................................... 4
Sending Commands ......................................................................... 4
Breakdown of Each Command Portion: ...............................................................4
Marker: .............................................................................................................4
Command Type:.................................................................................................4
Command Subtype: ............................................................................................4
Flags: ...............................................................................................................5
Data Size: .........................................................................................................5
Header Check Sum: ............................................................................................5
Engine: .............................................................................................................5
Mode: ...............................................................................................................5
Data: ................................................................................................................5
Data Check Sum: ...............................................................................................6
Initializing the Connection ............................................................... 6
Lines: ...............................................................................................................6
Calculating Checksum ...................................................................... 6
Data Commands:.............................................................................. 7
Examples of Strings to Send: ........................................................... 8
Subtype 01h – Cursor Up: ...................................................................................8
Subtype 02h – Letter ‘A’: ....................................................................................8
Subtype 03h – Number ‘3’:..................................................................................8
Subtype 04h – Requesting Player Detail “Genres”: .................................................8
Calculating the 4 Byte Number Argument: ..........................................................8
Handling Feedback........................................................................... 9
Possible Subtypes: .............................................................................................9
Special Data Formats:....................................................................................... 10
Appendix A – The GUI .................................................................... 13

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R EVISION H ISTORY
Revision Number Changes
1.1.2 Initial Version

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I NTRODUCTION
This document describes how to communicate with the VideoReQuest via IR, Serial, or
Ethernet. For Serial and Ethernet, we will also explain how data feedback is formatted.
Serial and Ethernet protocol is identical in terms of commands sent to the VideoReQuest and
feedback received from the VideoReQuest. For the purpose of simplicity, Serial and Ethernet
communication will be referred to as Serial in this document.
Conventions Used
1) Throughout this document, we will use the lowercase ‘H’ (h) notation when we wish to
denote a Hexadecimal number. Multi-Byte strings will be written as “XXh, YYh, …”.
Examples:
•The Hex number 39 will be written as 39h, which is 57 in ASCII, or the number 9
•The Hex string 4AC5 will be written as 4Ah, C5h.
2) VRQ and VideoReQuest will be used synonymously to describe the VideoReQuest line
of products.

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P ART 1: IR C ONTROL
There are 2 ways to control the VideoReQuest via IR. The simplest method is to use a
handheld remote aimed at the IR receiver on the front of the unit. For more advanced
installations, there is a 1/8th inch mini jack on the rear of the unit for integration with IR
based control systems. No matter which method you choose, this portion of the document
will describe the commands available.
Rear IR Pinout
The rear IR jack is designed for a 2 conductor 1/8th inch mini plug from a powered connecting
block or control system. You CAN NOT plug a dinkylink directly into the back of the
VideoReQuest.
2 Conductor Pinout
Tip Signal
Ring Ground
Sleeve Not Connected
Learning IR Codes into Other Systems
For any advanced commands (2 button key combinations), the proper method for teaching
the system the VideoReQuest IR codes is as follows:
1. Aim the VideoReQuest Remote AWAY from the learner
2. Press AND HOLD the Alt or Shift button (depending on command)
3. Aim the remote AT the learner
4. Press the second button
5. Release BOTH buttons
Most advanced commands are written on the IR remote in GREEN text. To access these
commands, press and hold the Alt button prior to pressing the desired command button.
Other advanced commands not written on the remote are listed in the table below.
List of Advanced IR Commands
Action Description Alt/Shift 2nd Button
Refresh DVD Details Performs a lookup on the current DVD ALT EDIT

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P ART 2: S ERIAL /E THERNET P ROTOCOL
This section describes how to communicate with the VideoReQuest via Ethernet or Serial.
Ethernet and Serial protocols are identical in terms of sending commands and receiving
feedback. For simplicity, we will refer to Ethernet and Serial communication as Serial, though
it can be used for Ethernet as well.
Rear Serial Port Pinout
Pin Purpose
1 Not Used
2 Receive
3 Transmit
4 Not Used
5 Ground
6 Not Used
7 RTS
8 CTS
9 Not Used
Serial Cable Pinout
Pin (VRQ Side) Pin (Control Side)
2 3
3 2
5 5
7 8
8 7
COM Settings
The rear serial port is used for integrating the VideoReQuest with a control system. These
settings can be found by going to Menu

Configuration

Control Port on the
VideoReQuest.
Parameter Value Value Value Value
Baud 9600 19200 38400 57600
Data Bits 8 8 8 8
Stop Bits 1 1 1 1
Parity None None None None
Flow Control None HW HW HW
Using Ethernet
The default port used to communicate with the VideoReQuest via Ethernet is port 3663. If
you open a connection to the VideoReQuest’s IP address at port 3663, you can communicate
with the unit just as if you connected serially.

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Communicating with the VideoReQuest
Before you can communicate with the VideoReQuest, you must initialize the connection. A
“Start Communications” command is similar to all other commands, with a few exceptions.
See Initializing the Connection on page 6 for more information.
Sending Commands
Commands are sent to the VideoReQuest in strings of Hexadecimal (or Hex) numbers.
Depending on the command, these strings are anywhere from 13 bytes to 17 or more bytes.
All commands are in the following format:
HEADER DATA
Marker Command
Type
Command
Subtype
Flags Data Size Chk
Sum
Engine Mode Data Chk
Sum
FChA0h0Ah1 Byte 00h00hByte 1 Byte 2 00hFFhFFh1+ Bytes 00h
Breakdown of Each Command Portion:
Marker:
The Marker bytes are ALWAYS FCh, A0h. These bytes tell the VideoReQuest the data that
follows is valid.
Command Type:
The Command Type will almost always be 0Ahwhen sending commands to the
VideoReQuest. All possible command types are as follows:
Command
Type
Description
05hStart Communications (see Initializing the Connection
on page 6 for more information
0AhCommand (most commands sent to the VRQ)
0FhData (not typically used)
14hAcknowledgement (used only if ACK flag is turned ON)
19hEnd Communications (used to terminate connection)
Command Subtype:
The 4 possible subtypes are as follows:
Command
Subtype
Description Data Length
(bytes)*
01h1 byte command, no arguments 4
02h2 bytes (1 for command, 1 for character argument) 5
03h5 bytes (1 for command, 4 for integer argument) 8
04hMulti-byte string argument TBD
*The data length includes the Engine, Mode, and Data Checksum bytes.

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Flags:
The 2 flag bytes are used to tell the VideoReQuest whether you do or do not want to use
certain features. Setting both to 00hturns off all options. Each byte is broken up into 8 bits.
Each bit is a flag for a certain feature. The possible options are as follows:
Byte 1 Byte 2
Bit 8 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 8 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1
ACKChk
Sum
Example:
To turn on the use of Check Sums, but not Acknowledgments, send 00h, 01h for the flag
bytes. This should be done on initialization of the connection as well as for any subsequent
command sent.
Data Size:
2 byte value that contains the length (in bytes) of the data portion of the command string.
For Command Subtypes 1, 2, or 3, use the Subtype table on page 4 to determine the data
length. For Command Subtype 4, the following example illustrates how to calculate the
Data Size:
Assume the length of the string is 25 bytes (25 characters, including spaces and
punctuation). This means that the full Data Size is 25 bytes PLUS 3 bytes for the
Engine, Mode, and Checksum, or 28 bytes total.
BYTE 1 = = 0, or 00hBYTE 2 = 28 MOD 255 = 28, or 1Ch
Header Check Sum:
If you are not using Check Sum (based on your Flag settings), then set this byte to 00h.
Otherwise, see Calculating Checksum on page 6 for more information.
Engine:
The Engine is simply the page that the VideoReQuest is currently on. Setting the Engine byte
to FFhsends the command to whatever the current Engine is. Setting the Engine byte to a
specific engine (see table) sends the command to that engine ONLY.
Engine Description
00hSends command to Browse mode
01hSends command to Player mode
02hSends command to DVD player
FFhSends command to default (current) engine
Mode:
The Mode is reserved for future use, and should always be set to FFh.
Data:
These byte(s) are the actual command and possible arguments that you are sending to the
VideoReQuest. See Data Commands on the next page for a complete list of commands.
255
28

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Data Check Sum:
If you are not using Check Sum (based on your Flag settings), then set this byte to 00h.
Otherwise, see Calculating Checksum below for more information.
Initializing the Connection
Before the VideoReQuest will respond to commands OR send you feedback, you must initialize
the connection. This tells the VideoReQuest a number of things, including whether or not you
wish to calculate Check Sum, how many lines of feedback you want at a time, etc. The
format for a “Start Communications” command is as follows:
HEADER DATA
Marker Command
Type
Command
Subtype
Flags Data Size Chk Sum Cmd Lines Chk Sum
FChA0h05h01hByte 1 Byte 2 00h03h00h01h06h00h
Currently, the only variable in this string is Flags, which you can set to whatever you want
depending on whether or not you want to use Acknowledgements or Check Sum (see Flags
on the previous page for more information). To simplify programming, it is recommended
that you use 00h, 00hfor the flag bytes, which turns OFF both Acknowledgements and
Check Sum calculation.
Lines:
The Lines portion of the data section is a 1 byte value that tells the VideoReQuest how many
lines of text you want to receive at once on the Browse and Chapters pages. Currently, the
only supported value is 06h.
Calculating Checksum
The Checksum can be calculated as follows:
1. Take the value of each byte in the string, up to but NOT including the checksum, and
multiply it by the position in the string from left to right (the leftmost byte is byte 1)
2. Add all the values calculated in step 1
3. Convert the result to Hex
4. The rightmost Hex byte is the checksum
This is done the same way for both the Header and the Data checksums.
Example Header Checksum:
Byte 1 Byte 2 Byte 3 Byte 4 Byte 5 Byte 6 Byte 7 Byte 8 Byte 9
Incoming String FC A0 05 01 00 00 00 03 67
Integer value 252 160 5 1 0 0 0 3 n/a
Position Multiplier 1 2 3 4 5 6 7 8 9
Result 252 320 15 4 0 0 0 24 n/a
Sum of all Results = 252+320+15+4+0+0+0+24 = 615 = 02h, 67h
The rightmost byte of the result is 67h, which is the calculated checksum. As we can see,
that matches the incoming checksum, so no data was lost.

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Data Commands:
Command Hex
String Description Cmd Subtype
Cursor Down 00hMoves cursor down 1 line at a time 01h
Cursor Left 01hMoves cursor left or moves back 1 level on Browse page. Acts as Rewind in
DVD mode.
01h
Cursor Right 02hMoves cursor right or moves down 1 level on Browse page. Acts as Fast
Forward in DVD mode.
01h
Cursor Up 03hMoves cursor up 1 line at a time 01h
Refresh 04hRequests all data from VideoReQuest 01h
Page Up 05hMoves up 6 lines at a time 01h
Page Down 06hMoves down 6 lines at a time 01h
All Movies 07hJumps to All Movies list 01h
Genres 08hJumps to Genres list 01h
Ratings 09hJumps to Ratings list 01h
Now Playing 0AhJumps to Player, displays currently playing movie info 01h
Enter 0BhIssues Enter command 01h
Home 0ChReturns to top of Browse page (Now Playing, All Movies, etc) 01h
VRQ Mode 0DhWhen in DVD mode, returns to VRQ mode 01h
Edit 0EhNot currently supported 01h
Eject 0FhNot currently supported 01h
Power Toggle 10hToggles soft power ON/OFF 01h
Power ON 11hIf unit is soft powered OFF, turns unit ON 01h
Power OFF 12hIf unit is soft powered ON, turns unit OFF 01h
Number 13hSends the 4 byte number in the argument portion 03h
DVD Menu 14hNot currently supported 01h
Play 15hPlays the current selection or unpauses playback 01h
Pause Toggle 16hToggles playback between Pause and Unpause 01h
Pause ON 17hPauses playback 01h
Pause OFF 18hResumes playback from a Paused state 01h
Stop 19hStops playback, returns to VRQ mode 01h
VRQ Menu 1AhNot currently supported 01h
DVD Mode 1BhWhen in VRQ mode, switches to DVD mode 01h
Next Chapter 1ChPlays the next chapter 01h
Previous Chapter 1DhResumes current chapter or plays previous chapter 01h
Goto Top 1EhJumps to top of current list in Browse page 01h
Goto Bottom 1FhJumps to bottom of current list in Browse page 01h
Search 20hNot currently supported 01h
Move to Line 21hMoves to the line number indicated by 4 byte integer argument 03h
Letter 22hSends the letter indicated by the 1 byte character argument 02h
Backspace 23hDeletes the last character entered in text entry 01h
Audio 24hToggles the Audio options in DVD playback 01h
Subtitles 25hToggles subtitle options in DVD playback 01h
Angle 26hToggles angle options in DVD playback on enabled DVDs 01h
View 27hNot currently supported 01h
Queue 28hNot currently supported 01h
Repeat 29hNot currently supported 01h
Shuffle 2AhNot currently supported 01h
Enter Line 2BhIssues an Enter command on the line number indicated by the 4 byte integer
argument
03h
Themes 2ChNot currently supported 01h
Info 2DhNot currently supported 01h
Directors 2EhJumps to Directors list 01h
Actors 2FhJumps to Actors list 01h
Mode 30hNot currently supported 01h
Player Detail Request 37hRequests a certain Player Detail, based on string argument 04h

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Examples of Strings to Send:
Subtype 01h – Cursor Up:
The command for Cursor Up is 03h. Send the following:
Marker Cmd
Type
Sub
type
Flags Data Size Chk
Sum
Engine Mode Data Chk
Sum
FChA0h0Ah01h00h00h00h04h00hFFhFFh03h00h
Subtype 02h – Letter ‘A’:
The command for any Letter is 22h. Send the following:
Marker Cmd
Type
Sub
type
Flags Data Size Chk
Sum
Engine Mode Data Chk
Sum
FChA0h0Ah02h00h00h00h05h00hFFhFFh22h41h00h
Subtype 03h – Number ‘3’:
The command for any Number is 13h. Send the following:
Marker Cmd
Type
Sub
type
Flags Data Size Chk
Sum
Engine Mode Data* Chk
Sum
FChA0h0Ah03h00h00h00h08h00hFFhFFh13h00h00h00h03h00h
* See below for more information on calculating the 4 byte number in the Data Argument
Subtype 04h – Requesting Player Detail “Genres”:
The command for Player Detail Request is 37h. Send the following:
Marker Cmd
Type
Sub
type
Flags Data Size** Chk
Sum
Engine Mode Data Chk
Sum
FChA0h0Ah03h00h00h00h0Ah00hFFhFFh37hGenres 00h
** Data Size for Subtype 04h is a variable that depends on the length of the argument
Calculating the 4 Byte Number Argument:
1) Assume that the number you wish to send is an ASCII value, NOT the actual number
2) Determine the Hex value of the number you wish to send (see table below for
examples)
a. For example, the number 3 would be 03h, NOT 33h
b. If the number is less than 4 bytes (i.e. less than 4311810304), append 00hto
the beginning of the number to complete the 4 byte requirement
Num Hex Num Hex Num Hex Num Hex Num Hex Num Hex
0 00 16 10 32 20 48 30 64 40 79 50
1 01 17 11 33 21 49 31 65 41 80 51
2 02 18 12 34 22 50 32 66 42 81 52
3 03 19 13 35 23 51 33 67 43 82 53
4 04 20 14 36 24 52 34 68 44 83 54
5 05 21 15 37 25 53 35 69 45 84 55
6 06 22 16 38 26 54 36 70 46 85 56
7 07 23 17 39 27 55 37 71 47 86 57
8 08 24 18 40 28 56 38 72 48 87 58
9 09 25 19 41 29 57 39 73 49 88 59
10 0A 26 1A 42 2A 58 3A 74 4A 89 5A
11 0B 27 1B 43 2B 59 3B 75 4B 90 5B
12 0C 28 1C 44 2C 60 3C 76 4C 91 5C
13 0D 29 1D 45 2D 61 3D 77 4D 92 5D
14 0E 30 1E 46 2E 62 3E 78 4E 93 5E
15 0F 31 1F 47 2F 63 3F 79 4F 94 5F

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Handling Feedback
Before the VideoReQuest will send feedback data, you must send a command to the
VideoReQuest that initializes communication. See Initializing the Connection on Page 6 for
more information.
All feedback is formatted in the same manner as commands sent TO the VideoReQuest. In
general, the format is as follows:
HEADER DATA
Marker Command
Type
Command
Subtype
Flags Data Size Chk
Sum
Data Chk Sum
FChA0h0Ah1 Byte 00h00hByte 1 Byte 2 00h1+ Bytes 00h
In this case, the Subtype determines what data you are receiving (i.e. Movie Title, Genre,
etc) and the Data portion contains the actual data (i.e. the actual Movie Title, the actual
Genre name, etc). The length of the Data portion is determined by the 2 byte Data Size in
the Header.
For help understanding what each Subtype is, see Appendix A.
Possible Subtypes:
Hex Integer Description Data Size
80 128 Browse window title (“Welcome”, “Total: 46”, etc) TBD
81 129 Browse List Title (Home, Genres, etc)* TBD
82 130 Browse Column 1 Header (Total) TBD
83 131 Browse Column 2 Header (Genre, Rating, etc) TBD
84 132 Browse Column 1 Data TBD
85 133 Browse Column 2 Data TBD
86 134 Browse List Size, Page UP/DOWN Flags and Cursor Position* 8
8A 138 Browse Long Description TBD
8B 139 Engine Mode 0: On Browse Page
1: On Player Page
2: DVD Pass-thru (Playing a movie)
2
8C 140 View Mode, Changer Number, Slot Number* 5
90 144 Browse Text Line 1* TBD
91 145 Browse Text Line 2* TBD
… … … …
9F 159 Browse Text Line 16* TBD
A0 160 Player Long Description (not used) TBD
A1 161 Player List Size, Page UP/DOWN Flags and Cursor Position (which chapter is
selected)*
8
A2 162 Player Movie Title TBD
A3 163 Player State 0: Stopped
1: Playing
2: Paused
2
A5 165 Player Window Title (“More Info”, “Chapters”) TBD
A6 166 Player Detail Headers* TBD
A7 167 Player Detail Text* TBD
A8 168 Player Mode (on Chapters or on Details)
0: Details
1: Chapters
2
A9 169 Player List Size, Page UP/DOWN Flags and Now Playing Cursor Position
(which chapter is playing)*
8
B0 176 Player Chapter Line 1 Text TBD
B1 177 Player Chapter Line 2 Text TBD
… … … …
BF 191 Player Chapter Line 16 Text TBD
* - Format of this data is explained on the next page under Special Data Formats

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Example:
Let’s say you received the following string from the VideoReQuest:
FCh, A0h, 0Ah, 84h, 00h, 00h, 00h, 07h, 00h, Horror, 00h
We know from the format explained on the previous page that 84his the Command
Subtype. From the table of subtypes on the previous page, we know that 84hindicates
that you are receiving the Browse Column 1 Data. Therefore, we extract Horror from
the data portion and save that in our Browse Column 1 Data variable.
Special Data Formats:
Browse List Title:
The Browse List Title is sent in chunks, delimited by a NULL character (00h). For
example, if you are inside the Genres list, the data portion of the string sent by the
VideoReQuest will look like this: Home[00h]Genres[00h]. This allows you to use
just the final portion to show the current list title, or the entire thing to show the full
hierarchy.
List Size, Page UP/DOWN Flags, and Cursor Position:
The List Size, Page UP/DOWN Flags and Cursor Position for the Browse and
Player pages are sent by the VideoReQuest in 1 string. The first 4 bytes of the string
are the List Size, the next byte is the Page UP/DOWN Flag, and the final 2 bytes
are for the Cursor Position.
List size is calculated as follows:
2563×BYTE1+2562×BYTE2+256×BYTE3+BYTE4
Page UP/DOWN flags could be one of the following:
Value Description
00hNo more lines exist above or below the current view
01hMore lines exist below the current view
02hMore lines exist above the current view
03hMore lines exist above AND below the current view
The 2 bytes for Cursor Position are calculated as follows:
256×BYTE1 + BYTE2 = RESULT
The following values of RESULT are possible:
Value Cursor on Line
1 1
2 2
4 3
8 4
16 5
32 6
64 7
128 8
Value Cursor on Line
256 1
512 2
1024 3
2048 4
4096 5
8192 6
16384 7
32768 8

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View Mode, Changer Number, and Slot Number:
The View Mode, Changer Number, and Slot Number are sent by the VideoReQuest
in 1 string. The first byte is the View Mode, followed by 1 byte for the Changer
Number (1, 2, 3, or 4), followed by 2 bytes for the Slot Number (1-400).
Possible View Modes are as follows:
View Mode Description
1 In VRQ Mode. Should display VRQ video output.
2 In DVD Mode. Should display DVD video output.
Slot Number is calculated in the same manner as Cursor Position:
256×BYTE1 + BYTE2 = Slot Number
Browse Line Text:
The first byte of the Browse Line Text is a 1 byte flag indicating which icon should be
displayed on that line. Possible values are as follows:
Value Description Icon
00hNo Icon N/A
01hNow Playing
02hAll Movies
03hGenres
04hRatings
05hActors
06hDirectors
Player Detail Headers:
The Player Detail Headers are sent by the VideoReQuest in 1 string, separated by
the NULL character (00h). The data portion of the string would look similar to the
following:
Genres[00h]Cast[00h]Directors[00h]Plot Summary[00h]

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Player Detail Text:
The VideoReQuest will not send any Player Detail Text until it is requested to do so.
Therefore, when you receive the Player Detail Headers, you should send one or
more of the following commands to receive the Player Detail Text:
Detail Cmd Subtype Data Length Data Command Data Argument
GENRES 04h10 37hGenres
CAST 04h8 37hCast
DIRECTORS 04h13 37hDirectors
PLOT SUMMARY 04h16 37hPlot Summary
For example, to request the Genres, send the following:
FCh, A0h, 0Ah, 04h, 00h, 00h, 00h, 0Ah, 00h, FFh, FFh, 37h, Genres, 00h
The VideoReQuest will respond by sending you the Header you requested, followed by
the NULL character (00h), followed by the Detail for that header.
For example, if you requested the Genres, the VideoReQuest will respond with:
FCh, A0h, 0Ah, A7h, 00h, 00h, 00h, 0Eh, 00h, Genres, 00h, Horror, 00h

VideoReQuest Protocol Guide v1.1.2 - 5/18/04
Phone [phone] •Fax [phone] •www.request.com
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13 -
Appendix A – The GUI
This section shows what each portion of feedback is and where it is located on the TV Out
GUI.
Fi
g
ure 1 – The Browse Pa
g
e
Fi
g
ure 2 – The Cha
p
ters Pa
g
e

VideoReQuest Protocol Guide v1.1.2 - 5/18/04
Phone [phone] •Fax [phone] •www.request.com
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14 -
Fi
g
ure 3 – The Pla
y
er Details Pa
g
e