Method and system for passive entry and passive anti-theft
First Claim
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1. A system for determining a total number of access devices associated with a target, the system comprising:
- a controller configured to control operation of the target; and
an access device comprising a partially restricted memory configured to store the total number of the access devices associated with the target and to provide unrestricted read access to the total number, and a restricted memory configured to store a password, wherein a read operation of the restricted memory is restricted by an authorization code.
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Abstract
A system for determining a total number of access devices associated with a target includes a controller and an access device. The controller may be configured to control operation of the target. The access device includes a partially restricted memory configured to store the total number of the access devices associated with the target and to provide unrestricted read access to the total number, and a restricted memory configured to store a password. A read operation of the restricted memory is restricted by an authorization code.
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Citations
20 Claims
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1. A system for determining a total number of access devices associated with a target, the system comprising:
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a controller configured to control operation of the target; and
an access device comprising a partially restricted memory configured to store the total number of the access devices associated with the target and to provide unrestricted read access to the total number, and a restricted memory configured to store a password, wherein a read operation of the restricted memory is restricted by an authorization code. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
a partially restricted memory configured to store the total number of the access devices and to provide unrestricted read access to the total number; and
a restricted memory configured to store the password.
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7. The system of claim 5 further comprising a transceiver configured to communicate the total number, the identification number, and the password to and from each of the access devices and the controller.
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8. The system of claim 5 wherein the reader comprises a transceiver configured to communicate the total number and the identification number from each of the access devices to the reader in response to at least one command.
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9. A method for determining a total number of programmed access devices, the method comprising:
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storing a password in a restricted memory on the access device, wherein a read operation is restricted by an authorization code; and
storing the total number of programmed access devices in an unrestricted read access memory on the programmed access device. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
storing in a partially restricted memory in the controller the total number of programmed access devices;
providing unrestricted read access to the total number; and
storing the password in a fully restricted memory in the controller.
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15. The method of claim 13 wherein reading comprises communicating the total number, the identification number, and the password to and from each of the access devices and the controller.
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16. The method of claim 13 wherein reading comprises communicating the total number and the identification number from each of the access devices to a reader in response to at least one command.
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17. An access device for use in a system for determining a total number of access devices that are associated with a controller, the access device comprising:
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a partially restricted memory configured to store the total number of access devices that are associated with the controller and to provide unrestricted read access to the total number; and
a restricted memory configured to store a password. - View Dependent Claims (18, 19, 20)
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Specification