System for processing multiple signal frequencies and data formats for a ...

300\\ 330 F A N (1 I_I_ DotoBit:123456789IO H 1 \ J |__|_ 340 L0g|c I LOQIC O _ FIXED CODE (10 blts of data) 310\ 350 / /-360 J U I I )/)1 I‘ K Y A Y M T J 370 380 390 400 Logic 1 Logic 0 ROLLING CODE (KeeLoq) 320\\ J I I I _ I I I (( \ JL A 1 Y Y M Y Y 450 452 454 455 458 ROLLING CODE

FIG—5

500 510 /-590
STORE ROLLING OR
FIXED CODE IN
INITIAJEDLEEARN MEMORY AS VALID
TRANSMITTER
SCAN FOR /‘-520 STORE CARRIER
COMMAND SIGNALS FREQUENCY USED TO
/ SEND FUNCTION CODE
DURING LEARN
OBTAIN FUNCTION CODE 530 600 PROCESS
DATA AND STORE AT /
MEMORY UNIT OF MICRO-
CONTROLLER
560
540 DETERMINE
\FUNCTlON CODE 5'55?
DATA FORMAT

610

FIG—6

710 700
INWMTE COMMAND

SGNAL SCAN MODE V 720 SCAN FOR QGNALSIN BARHER OPERATOR 740 ACCORDANCE W/ ONE OBTNNS FUNCHON CODE OF THE SCANFHNG =1 DAFA AND STORES AT MODES AT STEPS MEMORY UNIT OF 850,880,900 MlCRO—CONTROLLER /-750 DETERMINE FUNCDON CODE“ DATA FORMAT 760 ANALYZE DATA FUNCTION KNOWN-, THE STORED ' HXED CODE 'TAGS" 780 |:|XED FIXED OR CODE I _V ROLUNG CODE 800 [ " STOREDIN I PROCESS DESRED COMMAND REQUESTED >' COMMANDIS NOT PROCESSED

820

790

FIG—'7

END OF PROCESS

FROM STEP 720 INITIATE SCAN FOR COMMAND SIGNALS 850 1 SELECT /854 FRE 0 N Y A Q E C /-874 4 SELECT OTHER 4 ‘ FREQUENCY ‘ I 858 I 864\ 8'70 FREQUENCY SET To USE? FREQUENCY B PROCESS RECEIVED

SET RECUVER TO
FREQUENCY A

\

860

FUNCHON CODE

I