AST IR Web Surfer Mouse
=======================

Product Information
-------------------

	Product number:	23453-001
	Logitech P/N:	966117-0000
	FCC Id:		DZL211067

Overview
--------

	The IR mouse consists of two components, the IR receiver(IRRX) and
the IR transmitter (IRTX).  The unit comes with software for Windows
3.x/95/NT and runs alongside a normal mouse.  The quality of the Windows
driver is subsubstandard (I could barely get it to work). 

IRRX
----

	The IRRX plugs into any available serial port on the computer. 
The serial port must be set at 1200 baud 8N1.  This component will receive
and decode IR transmittions from the IRTX.  If you use a regular remote
control (such as from TV) you will random garbage. 

IRTX
----

	The IRTX has 34 buttons and a large mouse joystick.  It requires
two AA batteries to operate.  When a button is pressed it transmits an IR
signal to the IRRX component. 

	When a button is pressed the IRRX sends to the computer the
IR_BUTTONDOWN code (0xa0) then it transmits a minimum of five key codes. 
If the user continues to hold the key down the key code ir repeated.  When
the user releases the key the IRRX send the IR_BUTTONUP code (0xaa). 

Example #1: Key 5 being pressed and released:
    a0 19 19 19 19 19 aa

Example #2: Key 5 being pressed, held for 1 second and released:
    a0 19 19 19 19 19 19 19 19 19 19 19 19 19 19 19 19 19 19 aa

	As you can see the format used is very simple.  The trick comes in
that sometimes the IR signal will get clobbered and you will get an
invalid value. 

Example #3: An error while key 5 was pressed and released:
    a0 19 19 78 79 19 aa

	The three common codes (19) are assumed to be the key the user
pressed. 


Table #1: Codes
  Code	Description
  ----	---------------------
   01	Help
   02	Start
   03	Phone
   04	TV
   05	Gde
   06	CD
   07	Msg
   08	Select
   0a	Channel +
   09	Volume +
   0b	Mute
   0c	Volume -
   0d	Channel -
   0e	Skip Prev
   0f	Play
   10	Skip Next
   11	Menu
   12	Stop
   13	Pause
   14	Number 3
   15	Number 1
   16	Number 2
   17	Number 6
   18	Number 4
   19	Number 5
   1a	Number 9
   1b	Number 8
   1c	Number 7
   1d	Number 0
   1e	Symbol #
   1f	Symbol *
   23	Terminate
   36	Ouch! User pressed mouse control VERY hard
   38	Mouse up
   39	Left Mouse Down
   3a	Right Mouse Down
   3b	Both Mouse Down
   40-4f Light Mouse Movement
   50-5f Medium Mouse Movement
   60-6f Firm Mouse Movement
   a0	Button Pressed
   aa	Button Released

	The mouse movement pad is encoded in a simple format.  When the
user presses on the mouse movement pad it sends the IR_BUTTONDOWN code
(a0) then it sends a stream of mouse movement codes based on the direction
and how hard the user is pushing.  When the user releases the mouse
movement pad it sends the IR_BUTTONUP code (aa).  The mouse movement code
is one byte in length.  The first nibble (bits 4-7) is in the range of
four(lightest) thru six(hardest) shows how hard the user is pressing the
mouse movement pad.  The second nibble (bits 0-3) contains the direction
the user is moving the mouse movement pad in, see chart #1. Working
clockwise 0 is due north, 1 is North-North-East, 2 is North-East, 3 is
North-East-East, 4 is due east, continueing upto 0xf.  In example #5 you
see that the codes can change quickly and each is significant. 

Example #4: User lightly going due West:
    a0 4c 4c 4c 4c 4c 4c 4c aa

Example #5:  User firmly going in East then South:
    a0 64 64 65 67 68 68 aa

Chart #1 - Mouse movement codes
       E      0      2                                  
        \   F | 1   /                                   
          \   |   /                                     
         D  \ | /  3                                    
       C------*------4                                   
         B  / | \  5                                    
          /   |   \                                     
        /   9 | 7   \                                   
       A      8      6