 |
|
|
|
|
|
 Title: |
US5191610:
Remote operating system having secure communication of encoded messages and automatic re-synchronization
[ Derwent Title ]
|
| Country: |
US United States of America
|
| |
| Inventor: |
Hill, John P.; Westland, MI
Finn, Alan M.; Amston, CT
|
| Assignee: |
United Technologies Automotive, Inc., Dearborn, MI
other patents from UNITED TECHNOLOGIES AUTOMOTIVE, INC. (597540) (approx. 411)
News, Profiles, Stocks and More about this company
|
| Published / Filed: |
1993-03-02
/ 1992-02-28
|
| Application Number: |
US1992000843402
|
| IPC Code: |
Advanced:
G07C 9/00;
H04L 9/12;
Core:
more...
IPC-7:
H04L 9/00;
|
| U.S. Class: |
Current:
380/262;
380/046;
380/265;
380/274;
Original:
380/021;
380/023;
380/025;
380/046;
380/048;
380/050;
|
| Field of Search: |
380/021,23-25,46,48,50
|
| Priority Number: |
| 1992-02-28 |
US1992000843402 |
|
| Abstract: |
A remote operating system for remote-controlled operation of a device provides secure communication of encoded messages between a transmitter (100) and receiver (150) of the system, and provides automatic re-synchronization of the transmitter and receiver without revealing a loss of synchronization to the operator. A pseudo random binary number (PRBN) generator (105) in the transmitter (100) produces a sequence of identification numbers. Each time the transmitter (100) is activated, the identification number contained in the transmitted encoded message is selected as the next number in the sequence of identification numbers. A PRBN generator (170) in the receiver (150) produces a sequence of reference numbers that is identical to the sequence of identification numbers. The receiver responds to a command code portion of the transmitted encoded message for operation the device when there is identity between the reference number and the identification number. The receiver (150) responds to the transmitted message when there is not identity between the reference number and the identification number provided that a reference number identical to the identification number is generated within a search length in the sequence of reference numbers, thereby providing automatic re-synchronization of the transmitter and receiver. If a reference number matching the identification number is not found within the search length, the transmitter is controlled to produce a re-synchronization signal for re-synchronizing the receiver to the transmitter.
|
| Attorney, Agent or Firm: |
Grillo, Michael ;
|
| Primary / Asst. Examiners: |
Cangialosi, Salvatore;
|
| Maintenance Status: |
CC Certificate of Correction issued
|
| INPADOC Legal Status: |
Show legal status actions
|
| Family: |
None
|
First Claim:
Show all 23 claims |
We claim:
1. A remote operating system for remote-controlled operation of a device, comprising:
- transmitting means having:
- means for transmitting encoded messages, each message comprising an identification number portion and a command code portion,
- command means for providing at least one command code signal, each command code signal corresponding to an operating condition of the device, said encoded message command code portion containing a command code signal,
- pseudo random binary number (PRBN) generating means comprising a generator polynomial derived from a prime polynomial for generating a sequence of identification numbers, the length of said sequence of identification numbers being dependant upon the order of said prime polynomial, said encoded message identification number portion being selected as the next identification number in said sequence of identification numbers each time said transmitting means is actuated; and
- receiving means, connected for communication with the device, having:
- means for receiving said encoded messages,
- PRBN generating means comprising a generator polynomial derived from a prime polynomial for generating a sequence of reference numbers, said receiving means PRBN generating means generator polynomial being identical to said transmitting means PRBN generating means generator polynomial, said sequence of reference numbers being identical to said sequence of identification numbers,
- reference number memory means for storing the current reference number in said sequence of reference numbers,
- signal processing means responsive to receiving an encoded message for selecting the next reference number from said sequence of reference numbers, and responsive to there being identity between the next reference number and said encoded message identification number portion for replacing the current reference number with the next reference number in said reference number memory means, and for providing said encoded message command code portion to the device.
|
| Background / Summary: |
Show background / summary
|
| Drawing Descriptions: |
Show drawing descriptions
|
| Description: |
Show description
|
| Forward References: |
Show 57 U.S. patent(s) that reference this one
|
|
