Remote entry transmitter with transmission identification codes

• US 7,129,815 B2
• Filed: 07/25/2001
• Issued: 10/31/2006
• Est. Priority Date: 08/24/2000
• Status: Expired due to Term

• Current Assignee: Continental Automotive Systems, Inc. (Continental AG)
• Original Assignee: Siemens VDO Automotive Corporation (Siemens AG)
• Inventors: Morrison, Brian, Epp, Jacob G., Banas, Patrick A., Reimus, David, Ostrander, Gerald L.
• Primary Examiner(s): Holloway, III, Edwin C.
• Application Number:
  US09/915,033
• Publication Number:
  US 20020024417A1
• Time in Patent Office: 1,924 Days
• Field of Search: 340/5.25, 340/5.26, 340/426.13, 340/426.14, 340/426.17, 340/5.72, 340/5.65, 340/426.36, 361/172, 377/33, 380/45, 700/116, 713/170
• US Class Current: 340/5.25
• CPC Class Codes: B60R 25/24 using electronic identifiers containing a code not memorised by the user
• CPC Class Codes: G07C 2009/00253 dynamically, e.g. variable code - rolling code
• CPC Class Codes: G07C 2009/00793 by Hertzian waves
• CPC Class Codes: G07C 9/00182 operated with unidirectional data transmission between data carrier and locks
• CPC Class Codes: G07C 9/00309 operated with bidirectional data transmission between data carrier and locks
• CPC Class Codes: G07C 9/00857 where the code of the data carrier can be programmed

Abstract

A transmitter identification code is designed such that the code varies as the code is assigned. In one embodiment the code will include information with regard to the date and time that the code is initially determined. In a second embodiment the code is provided by incrementing a counter, and then modifying that counter information such that the final code is non-sequential.

Claims

1. A method of assigning an identification code to a remote entry transmitter comprising the steps of:

1) providing a number which varies by the time a code is assigned relative to other codes, and ensuring that the codes are non-sequential for codes assigned sequentially, said code also being indicative of a date and time associated with the assignment of said code; and

2) storing said code in a remote entry transmitter as a remote entry transmitter identification code.

2. A method as set forth in claim 1, wherein said code is determined by incorporating the date and time that the code is set, into the code itself.

3. A method as set forth in claim 2, wherein the said code also incorporates information with regard to the particular assembly line.

5. A method as set forth in claim 1, wherein said remote entry transmitter is utilized as part of a remote access system for a vehicle door.

4. A remote entry transmitter comprising:

a transmitter body having a switch for requesting a vehicle component to perform an operation; and

a transmitter for transmitting a code, said code being a transmitter identification code stored in said remote entry transmitter and incorporating information which is both non-sequential, and yet which varies in order of the time the code was determined, said code carrying information associated with the date and time that said code was assigned.

6. A remote entry transmitter as set forth in claim 4, wherein said transmitter is utilized to transmit a code to a receiver on a vehicle to provide access to the doors on the vehicle.