Reconfigurable universal trainable transmitter
First Claim
Patent Images
1. A trainable transmitter comprising:
- a transmitter for transmitting a code in a wireless signal to a remote receiver; and
a read-only data module removably connected to said transmitter to be carried by said transmitter during normal use, said data module including data necessary to generate said code, said trainable transmitter generating said code based on said data without receiving said data from the remote receiver.
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Abstract
A trainable transmitter comprises a transmitter, code-generation circuitry and a removable, plug-in data module. The data module includes information necessary for generating a code for a specific security system, such as a garage door opener. Preferably, the data includes a cryptographic algorithm and the frequency at which the wireless signal is to be generated. The code-generation circuitry accesses the data in the data module to generate a code, which is then transmitted by the transmitter. A variety of data modules are provided. A user installs a data module which corresponds to the security system to be accessed.
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Citations
21 Claims
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1. A trainable transmitter comprising:
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a transmitter for transmitting a code in a wireless signal to a remote receiver; and
a read-only data module removably connected to said transmitter to be carried by said transmitter during normal use, said data module including data necessary to generate said code, said trainable transmitter generating said code based on said data without receiving said data from the remote receiver. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A read-only data module for a trainable transmitter comprising:
a read-only computer storage medium for storing data necessary for generating a code for a security system, wherein said data module is removably connected to the trainable transmitter and is carried by the transmitter during normal use, and wherein the trainable transmitter generates the code without receiving said data from the security system. - View Dependent Claims (14, 15, 16, 17, 18)
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19. A trainable transmitter comprising:
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a transmitter for transmitting a wireless signal to a remote receiver;
a ROM data module removably connected to said transmitter and carried by said transmitter during normal use, said data module for storing a cryptographic algorithm; and
code-generation circuitry for generating a code, to be transmitted in the wireless signal by said transmitter, based upon said cryptographic algorithm stored in said data module without receiving said cryptographic algorithm from the remote receiver. - View Dependent Claims (20)
a plurality of said ROM data modules, each for storing a different cryptographic algorithm.
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21. A method for generating a wireless signal including the steps of:
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a) selecting a read-only data module containing a cryptographic algorithm for generating a digital code for a security system from among a plurality of read-only data modules each having a different cryptographic algorithm;
b) removably connecting the data module selected in said step a) to code-generation circuitry during normal operation of said method, where each of said plurality of data modules is removably connectable to the code-generation circuitry;
c) generating a digital code based upon the cryptographic algorithm in the selected data module in the code-generation circuitry without obtaining data necessary for generating the digital code from the security system; and
d) transmitting the digital code in a wireless signal.
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Specification