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US 4,786,900 AGranted
Electronic key apparatus
AssigneeCasio Computer Co., Ltd.
InventorsKatsuaki Karasawa, Hideyuki Shoji, Tomoo Kasuo, Kazunori Kita, Syunichi Matsumoto, Keisuke Tonomura, Narutoshi Minami
Life of this patent
Estimating the term…
Abstract
An electronic key apparatus wherein an encrypted code for unlocking an electronic lock is stored in an encrypted code storage register. A password is stored in a password storage register. The same password as that stored in the password storage register, is input via a switch. The password input by the switch is compared with the password stored in the password storage register, by a coincidence detection circuit. When a coincidence is detected, the encrypted code stored in the encrypted code storage register is transmitted to the electronic lock, by a transmitter.
Claims50
An electronic key apparatus comprising:
- encrypted code storage means for storing an encrypted code for unlocking an electronic lock;
- pass data storage means for storing pass data;
- data input switch means for inputting the same pass data as that stored in said pass data storage means;
- data coinidence detection means for detecting a coincidence between the data input by said data input switch means and the pass data stored in said pass data storage means;
- manual switch means;
- and
- encrypted code transmission means for transmitting the encrypted code stored in said encrypted code storage means to said electronic lock when said coincidence is detected by said data coincidence detection means and said manual switch means is operated.
4 more elements
An electronic key apparatus comprising:
- encrypted code storage means for storing an encrypted code for unlocking an electronic lock;
- display means for displaying the encrypted code stored in said encrypted code storage means;
- pass data storage means for storing pass data;
- data input switch means for inputting the same pass data as that stored in said pass data storage means;
- data coincidence detection means for detecting a coincidence between the data input by said data input switch means and the pass data stored in said pass data storage means;
- and
- encrypted code transmission means for transmitting the encrypted code stored in said encrypted code storage means to said electronic lock when the coincidence is detected by said data coincidence detection means.
4 more elements
An electronic key apparatus comprising:
- encrypted code storage means for storing an encrypted code for unlocking an electronic lock;
- pass data storage means for storing pass data;
- data input switch means for inputting the same pass data as that stored in said pass data storage means;
- data coincidence detection means for detecting a coincidence between the data input by said data input switch means and the pass data stored in said pass data storage means;
- encrypted code transmission means for transmitting the encrypted code stored in said encrypted code storage means to said electronic lock when the coincidence is detected by said data coincidence detection means;
- and
- indicating means for indicating that the encrypted code is being transmitted by said encrypted code transmission means.
4 more elements
An electronic key apparatus comprising:
- encrypted code storage means for storing an encrypted code for unlocking an electronic lock;
- pass data storage means for storing pass data;
- data input switch means for inputting the same pass data as that stored in said pass data storage means;
- data coincidence detection means for detecting a coincidence between the data input by said data input switch means and the pass data stored in said pass data storage means;
- encrypted code updating means for enabling updating of the encrypted code stored in said encrypted code storage means only when the coincidence is detected by said data coincidence detection means;
- encrypted code transmission means for transmitting the encrypted code stored in said encrypted code storage means to said electronic lock;
- and
- manual switch means for causing said encrypted code transmission means to transmit the encrypted code, only when the coincidence is detected by said data conicidence detection means.
5 more elements
An electronic key apparatus comprising:
- key data input means including item input means for inputting an item data indicating a type of an electronic lock, and encrypted code input means for inputting an encrypted code for unlocking the electronic lock for each item data;
- key data storage means for storing a plurality of item data and encrypted codes corresponding thereto input by said key data input means;
- display means for displaying the item data and encrypted codes stored in said key data storage means;
- pass data storage means for storing pass data;
- pass data input means for inputting the pass data;
- judging means for judging whether or not the pass data input by said pass data input means coincides with pass data stored in said pass data storage means;
- and
- encrypted code transmission means for transmitting the encrypted code stored in said key data storage means when the coincidence is detected by said judging means
- said encrypted code transmission means comprising:
- item selection means for selecting one of the plurality of item data;
- and
- means for reading out the encrypted code corresponding to the item data selected by said item selection means and for sending out the readout encrypted code.
9 more elements
Dependencies are inferred from the claim text.