Device servicing system and method

• US 6,546,360 B1
• Filed: 10/30/1998
• Issued: 04/08/2003
• Est. Priority Date: 10/30/1998
• Status: Expired due to Term

• Current Assignee: Trimble Navigation Limited (Trimble Inc.)
• Original Assignee: Trimble Navigation Limited (Trimble Inc.)
• Inventors: Westfall, Brian, Gilbert, Charles
• Primary Examiner(s): Hoff, Marc S.
• Assistant Examiner(s): Barbee, Manuel L.
• Application Number:
  US09/183,614
• Time in Patent Office: 1,621 Days
• Field of Search: 702/59, 702/61-63, 702/94, 702/122, 702/150-152, 702/184, 702/185, 702/188, 701/213, 705/22, 705/23, 340/457.4, 340/612, 340/613, 340/614
• US Class Current: 702/188
• CPC Class Codes: G08B 5/004 Reflective safety signalling devices attached on persons
• CPC Class Codes: H04L 67/52 specially adapted for the location of the user terminal
• CPC Class Codes: H04L 69/329 in the application layer [OSI layer 7]
• CPC Class Codes: H04L 9/40 Network security protocols

Abstract

A system and method for determining when portable devices require service. In one embodiment, the system is co-located with the portable device and includes a sensor, positioning system receiver and communication transmitter. The sensor senses when the portable device requires service. The positioning system receiver receives positioning signals, such as positioning signals issued by the Global Positioning System, (GPS), and uses the positioning system signals to determine the location of the portable device. The communications transmitter transmits a service signal to a service base station to indicate that the portable device requires service. The service signal includes the determined location of the portable device, thereby eliminating the need for service personnel to physically inspect every portable device in order to determine if any portable devices require service.

Claims

1. A system comprising:

a base station;

a portable road sign device, the device configured to receive queries from the base station, issue replies to the base station, including the device'"'"'s location, and receive instructions to perform task or send data from the base station based upon the device'"'"'s location or device status and that, depending upon the device'"'"'s location, receives from the base station data to display information selected from the group consisting of road hazard, safety or construction information.

2. A base station for controlling displays of remote construction signs, the displays displaying information selected from the group consisting of road hazard, safety or construction information, comprising a communication device configured to issue queries to displays remote from the base station and receive replies from the displays, including a display'"'"'s location, said base station further issuing instructions to perform tasks or send data from the base station based upon the display'"'"'s location.

3. A method comprising:

receiving queries from a base station;

a portable road sign device, remote from the base station, issuing replies to the base station, including the device'"'"'s location, the device receiving instructions to perform tasks or send data from the base station based upon the device'"'"'s location or device status and receiving data from the base station to display certain information selected from the group consisting of road hazard, safety or construction information, the information depending upon the device'"'"'s location.

4. A method for remotely controlling displays of construction signs comprising:

issuing queries to remote displays, the displays displaying information selected from the group consisting of road hazard, safety or construction information;

receiving replies from the displays, including a display'"'"'s location; and

issuing instructions to perform tasks or send data to the display based upon the display'"'"'s location.