Method and apparatus of distance-based location alarm
First Claim
1. An apparatus for distance computation, comprising:
- a location determining device for determining a current location based on signals received from a positioning broadcast system;
a memory for storing a coordinate of at least one reference location and at least one program for the distance computation;
an input device for entering the coordinate of the at least one reference location, the input device operatively coupled to the memory;
a microprocessor for calculating a distance between the current location and the at least one reference location, the microprocessor operatively coupled to the location determining device and the memory; and
an output device operatively coupled to the microprocessor for outputting the calculated distance.
1 Assignment
0 Petitions
Accused Products
Abstract
An apparatus for distance computation includes a location determining device for determining a current location based on signals received from a positioning broadcast system; a memory for storing a coordinate of at least one reference location and at least one program for the distance computation; an input device for entering the coordinate of the at least one reference location; a microprocessor for calculating a distance between the current location and the at least one reference location, the microprocessor operatively coupled to the location determining device and the memory; and an output device operatively coupled to the microprocessor for outputting the calculated distance. The apparatus may further include an alarm setting device operatively coupled to the microprocessor for determining an alarm condition from the calculated distance; and an alarm triggerable by the alarm setting device.
160 Citations
21 Claims
-
1. An apparatus for distance computation, comprising:
-
a location determining device for determining a current location based on signals received from a positioning broadcast system;
a memory for storing a coordinate of at least one reference location and at least one program for the distance computation;
an input device for entering the coordinate of the at least one reference location, the input device operatively coupled to the memory;
a microprocessor for calculating a distance between the current location and the at least one reference location, the microprocessor operatively coupled to the location determining device and the memory; and
an output device operatively coupled to the microprocessor for outputting the calculated distance. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
-
-
14. An apparatus for distance computation, comprising:
-
means for determining a current location based on signals received from a positioning broadcast system;
memory for storing a coordinate of at least one reference location and at least one program for the distance computation;
means for entering the coordinate of the at least one reference location;
means for calculating a distance between the current location and the at least one reference location, the means for calculating operatively coupled to the memory and the means for determining the current location; and
means for outputting the calculated distance, the means for outputting operatively coupled to the means for calculating. - View Dependent Claims (15, 16)
-
-
17. A navigation device, comprising:
-
a location determining device for determining a current location based on signals received from a positioning broadcast system;
a memory for storing a coordinate of a reference location, at least one program for distance computation, and a list of threshold distances and messages;
an input device for entering the list of threshold distances and messages, the input device operatively coupled to the memory;
a microprocessor for calculating a distance between the current location and the reference location, the microprocessor operatively coupled to the location determining device and the memory;
means for determining an alarm condition based on the calculated distance and the list of the threshold distances, the means for determining an alarm condition operatively coupled to the memory and the microprocessor; and
an output device for outputting an alarm signal, the output device operatively coupled to the memory and the microprocessor.
-
-
18. A method for generating a distance-based alarm, comprising:
-
inputting a coordinate of a reference location;
determining a current location based on signals received from a positioning broadcast system;
computing a distance from the current location to the reference location;
comparing the distance with a threshold value to see if an alarm condition is met; and
outputting a signal if the alarm condition is met. - View Dependent Claims (19, 20, 21)
-
Specification