User's Manual

Viewsonic Tweety RF Remote Rev 2.9A November 05, 2001
Universal Electronics Inc. Confidential
Page 24 of 63
Time Event / Data Packet Transmission Diagram (continued)
Te_2
--------------------------- // ------------------------ // ------------------ 60 seconds ---------------- // ------------------------ // -----------------
Te_1
- ~ 70ms -- // 
~10ms~
Te_2a Te_3
~10ms~
Te_3a, Te_1a
Make Make Break Break
Te_3b, Te_6a
Te_3c, Te_6a
Te_1a
Make Make Make
StkKy
Sleep
Te_4
- // ---- 70ms --- // ----- - // ---- 70ms -- // ----
Notes:
Te_4a
Te_4b
Te_5
Te_6
Time values are approximate and NOT to scale
Te_5a Te_6a
Refer to APPENDIX for notation descriptions used in this Diagram and Table below.
Time Event / Data Packet Transmission (continued)
Time Event
Key Press & Time Event Data Packet Transmission & Time Event Remark
Te_3
Te_3a, Te_1a
Te_3b, Te_6a
Te_3c,
Te_5a
Te_6a
70 ms after Te_2a:
<K1> key is now released.
70 ms after Te_2a:
<K1> is released but another
key is pressed, <K2> say
within 5 seconds.
70 ms after Te_2a:
<K1> is released but NO other
key press detected after 5
seconds elapsed.
70 ms after Te_2a:
While <K1> is still being held
down, another key, <K2> say,
is pressed
Two Break-Code-Data-Packets (of <K1> Scan Code) will be sent, separated
by about 10 ms time interval between them.
Two Break-Code-Data-Packets (of <K1> Scan Code) sent with 10 ms
separation. The RF Transmitter will then be turned OFF. When another key,
<K2>, is pressed within 5 seconds, the RF Transmitter will be turned ON to
send two Make-Code-Data-Packets of K2 (10 ms between packets) as shown
at Te_1a
Two Break-Code-Data-Packets (of <K1> Scan Code) will be sent with 10
ms time delay in between when <K1> is released. Since no other key press
is detected beyond 5 seconds, a Sleep-Code-Data-Packet will be sent, the RF
transmitter will then be turned OFF to conserve the power.
Make code data packet of K1 sent as defined before. If <K1> released, Break code
data packets of K1 sent
, 10 ms later, Make code data packet of K2 sent. If
<K2> is still down, Make code data packet of K2 sent, etc.. , until <K2>
released, then Break code data packet of K2 sent.
70 ms from the last Make-Code-Data-
Packet sent and <K1> released.
Case where <K1> released, and <K2>
pressed within 5 seconds after <K1>
released.
Case where <K1> released and no
other key press is to be followed after
more than 5 seconds.
Case of Sequence Break-
Code/Stuck/Sleep to indicate the
situation.