Meter capable of having communication security and data transmitting/receiving system using the same

• US 9,070,277 B2
• Filed: 12/12/2012
• Issued: 06/30/2015
• Est. Priority Date: 12/19/2011
• Status: Active Grant

• Current Assignee: LSIS Co. Ltd. (LS Corporation)
• Original Assignee: LSIS Co. Ltd. (LS Corporation)
• Inventors: Kim, Yong Woo
• Primary Examiner(s): POPE, DARYL C
• Application Number:
  US13/712,523
• Publication Number:
  US 20130154848A1
• Time in Patent Office: 930 Days
• Field of Search: 340/539.1, 340/539.11, 340/506
• US Class Current: 1/1
• CPC Class Codes: G08C 19/00 Electric signal transmission systems G08C17/00 takes precedence
• CPC Class Codes: H04L 63/0442 wherein the sending and receiving network entities apply asymmetric encryption, i.e. different keys for encryption and decryption cryptographic mechanisms or cryptographic arrangements for public-key encryption H04L9/30
• CPC Class Codes: H04L 67/12 specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks

Abstract

Disclosed is a meter capable of having communication security and a data transmitting/receiving system using the same, the system being such that a the server generates a public key and a private key corresponding to the public key, and transmits the public key to a meter, and the meter comprises a communication unit receiving the public key from a first communication unit, a frame generating unit encoding the data frame using the public key, and a controller controlling the communication unit to allow transmitting the encoded data frame.

Claims

1. A data transmitting/receiving system comprising a meter and a server, wherein:

the server is configured to;

generate a public key and a private key corresponding to the public key; and

transmit a message requesting a data frame and the public key at a same time to the meter; and

the meter comprises;

a communication unit receiving the public key from the server,

a frame generating unit encoding the data frame using the public key, and

a controller configured to;

cause the communication unit to transmit the encoded data frame; and

cause the frame generating unit to generate the data frame using the public key in response to receiving the message and the public key from the server.

2. The system of claim 1, wherein the server uses the private key to decode the encoded data frame received from the meter.

3. The system of claim 1, wherein the server and the communication unit communicate with each other using a Device Language Message Specification (DLMS) protocol.

4. The system of claim 1, wherein:

the meter further comprises a storage storing the encoded data frame, and

the controller is further configured to cause the communication unit to transmit the encoded data frame stored in the storage in response to the message received from the server.

5. The system of claim 1, wherein the frame generating unit encodes a block portion indicating data in the data frame.