Appeal No. 1997-0884
Application 08/260,148
This is a decision on appeal under 35 U.S.C. § 134 from
the final rejection of claims 1-5.
We reverse.
BACKGROUND
The disclosed invention is in the field of remote access
or remote lock systems and relates to a method for preventing
unauthorized learning and retransmission of an access code as
described in the Background of the Invention (specification,
pages 1-2) and page 9, first paragraph, and page 21, line 25,
through page 22, line 7, of the specification.
Claim 1 is reproduced below.
1. A method for preventing unauthorized learning
and reproduction of an access code in a combined
receiver/transmitter system comprising the steps of:
setting a flag in a memory of an integrated
circuit upon the first time the integrated circuit is
placed in a learn mode while configured as a receiver;
and
checking the flag if the integrated circuit is
later configured as a transmitter; and
modifying the code if the flag is set.
The Examiner relies on the admitted prior art (APA)
stating that "Texas Instruments manufactures an integrated
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