Controller using transmitter and receiver

• US 5,995,013 A
• Filed: 04/03/1996
• Issued: 11/30/1999
• Est. Priority Date: 05/06/1994
• Status: Expired due to Fees

• Current Assignee: Nissan Motor Co., Ltd.
• Original Assignee: Nissan Motor Co., Ltd.
• Inventors: Yoshizawa, Takashi, Amano, Nobuhiro
• Primary Examiner(s): Horabik, Michael
• Assistant Examiner(s): Asongwed, Anthony A.
• Application Number:
  US08/624,349
• Time in Patent Office: 1,336 Days
• Field of Search: 340/825.31, 340/825.3, 340/425.5, 340/426, 340/825.22, 340/825.69, 340/825.72, 307/10.2, 307/10.3, 307/10.4, 307/10.5, 307/10.6, 187/287
• US Class Current: 340/5.23
• CPC Class Codes: B60R 25/24 using electronic identifiers containing a code not memorised by the user
• CPC Class Codes: G07C 2009/00222 by more than one push button
• CPC Class Codes: G07C 2009/00825 remotely by lines or wireless communication
• CPC Class Codes: G07C 2009/00849 programming by learning
• CPC Class Codes: G07C 9/00182 operated with unidirectional data transmission between data carrier and locks
• CPC Class Codes: G07C 9/00817 where the code of the lock can be programmed

Abstract

When a control unit receives a second ID code within a specified time after receiving a first ID code in the ID code registration mode, and decides that the first ID code is coincident with the second ID code, the control unit stores the ID code as a newly registered ID code in a storage unit.

Claims

1. A system using a transmitter and receiver for preventing inadvertent code registration, comprising:

a transmitting unit in which a particular ID code is set; and

said receiver comprising;

a receiving unit for receiving the ID code transmitted from said transmitting unit;

a storage unit connected to said receiving unit for storing a previously registered ID code for said transmitting unit; and

a control unit connected to said storage unit and said receiving unit, said control unit being operable in a control mode in which a determination is made, upon a first receipt of the ID code provided to said control unit by said receiving unit, of the first received ID code against the registered ID code stored in said storage unit, and when both are coincident with each other, a specified control output is performed,

said control unit being further operable in an ID registration mode for recognizing and registering a new ID code,

wherein said control unit, upon determining a second receipt of the ID code in a row within a specified time after the first receipt of the ID code, stores the ID code as the new ID code in said storage unit.

2. A system using a transmitter and a receiver according to claim 1, wherein said transmitting unit, upon operation, transmits the ID code once.

3. A system using a transmitter and receiver according to claim 1, wherein said transmitting unit transmits the ID code over-the-air to said receiving unit.

4. A system using a transmitter and a receiver according to claim 1, wherein said storage unit includes a non-volatile region and a second region separate from the non-volatile region,

wherein the first ID code is stored in the second region of said storage unit,

wherein the second ID code is stored in the second region of said storage unit, and

wherein, when said control unit decides that the first ID is coincident with the second ID code, the first ID code is stored as the new ID code in the non-volatile region of said storage unit.

5. A system using a transmitter and a receiver according to claim 4, wherein, when said control unit decides that the first ID code is not coincident with the second ID code, the first ID code is not stored in the non-volatile region of said storage unit, and a previously-stored ID code in the non-voltage region of said storage unit is maintained as a current ID code for said receiving unit.

6. A system using a transmitter and receiver for preventing inadvertent code registration, comprising:

a transmitting unit in which a particular ID code is set; and

said receiver comprising;

a receiving unit for receiving the ID code transmitted from said transmitting unit;

a storage unit connected to said receiving unit for storing a previously registered ID code for said transmitting unit; and

a control unit connected to said storage unit and said receiving unit, said control unit being operable in a control mode in which a determination is made, upon receipt of the ID code provided to said control unit by said receiving unit, of the received ID code against the registered ID code stored in said storage unit, and when both are coincident with each other, a specified control output is performed,

said control unit being further operable in an ID registration mode for recognizing and registering a new ID code,

wherein said control unit, upon determining a receipt of a registration permission signal within a specified time after the receipt of the ID code in the ID code registration mode with no other ID codes received within the specified time, stores the ID code as the new ID code in said storage unit.

7. A system using a transmitter and a receiver according to claim 6, wherein said storage unit includes a non-volatile region and a second region separate from the non-volatile region,

wherein the one ID code is initially stored in the second region of said storage unit, and

wherein, when said control unit decides that the registration permission signal is received within the specified time after the receipt of the one ID code in the ID registration mode, the one ID code is stored as the new ID code in the non-volatile region of said storage unit.

8. A system using a transmitter and a receiver according to claim 7, wherein, when said control unit decides that the registration permission signal has not been received within the specified time after the receipt of the one ID code in the ID registration mode, a previously-stored ID code in the non-voltage region of said storage unit is maintained as a current ID code for said receiving unit.

9. A method of setting an ID code in a receiver for a system having a transmitter communicating with the receiver via wireless communications for preventing inadvertent code registration, the method comprising the steps of:

a) entering a registrable state for the receiver;

b) receiving a first ID code sent from the transmitter while the receiver is in the registrable state;

c) setting a timer based on the receipt of the first ID code in step b);

d) temporarily saving the first ID code in a storage unit in the receiver;

e) determining if a second ID code is received while the receiver is in the registrable state, and if so,

e1) determining if the second ID code was received in step e) within a specified time after the first ID code was received in step b) and that no other ID codes were received within the specified time;

e2) if step e1) indicates that the first and second ID codes were received within the specified time and that no other ID codes were received within the specified time while the receiver is in the registrable state, determining if the first and second ID codes are coincident; and

e3) if step e2) indicates that the first and second ID codes are coincident, storing the first ID code as a newly-registered ID code in the storage unit of the receiver,

wherein the newly-registered ID code is stored in the storage unit of the receiver only if the coincidence in step e3) is satisfied.

10. The method according to claim 9, further comprising the step of:

e4) if step e1) indicates that the first and second ID codes were not received within the specified time while the receiver is in the registrable state, erasing the first ID code from the storage unit and maintaining a previously-registered ID code in the storage unit of the receiver.