초록 ▼

A fuel dispenser includes data type aware SGML processing capabilities allowing it to efficiently process received data having a variety of data types. Such received data typically includes fuel dispenser configuration information. Further benefits related to data type aware SGML processing within t

A fuel dispenser includes data type aware SGML processing capabilities allowing it to efficiently process received data having a variety of data types. Such received data typically includes fuel dispenser configuration information. Further benefits related to data type aware SGML processing within the fuel dispenser include the ability to transfer information in a data type aware SGML format from the fuel dispenser, such as diagnostics data, to a remote system. Data type aware SGML data definitions facilitate conversion of the data type aware SGML-formatted diagnostics data into a machine format usable by the remote system. Preferably, the fuel dispenser includes an HTTP server for communicating with remote client's systems that employ data type aware SGML-capable, web browsers.

대표청구항 ▼

A fuel dispenser includes data type aware SGML processing capabilities allowing it to efficiently process received data having a variety of data types. Such received data typically includes fuel dispenser configuration information. Further benefits related to data type aware SGML processing within t

A fuel dispenser includes data type aware SGML processing capabilities allowing it to efficiently process received data having a variety of data types. Such received data typically includes fuel dispenser configuration information. Further benefits related to data type aware SGML processing within the fuel dispenser include the ability to transfer information in a data type aware SGML format from the fuel dispenser, such as diagnostics data, to a remote system. Data type aware SGML data definitions facilitate conversion of the data type aware SGML-formatted diagnostics data into a machine format usable by the remote system. Preferably, the fuel dispenser includes an HTTP server for communicating with remote client's systems that employ data type aware SGML-capable, web browsers. f claim 4 further comprising: calculating the difference between the second prime vertical radius of curvature value for the second latitude and the first prime vertical radius of curvature value for the first latitude; multiplying the difference between the second prime vertical radius of curvature value for the second latitude and the first prime vertical radius of curvature value for the first latitude by the difference between the latitude of the first point and the first latitude to obtain a first value; and adding the first prime vertical radius of curvature value for the first latitude to the first value to obtain the interpolated prime vertical radius of curvature value. 6. The method of claim 4 further comprising; calculating the difference between the second meridian radius of curvature value for the second latitude and the first meridian radius of curvature value for the first latitude; multiplying the difference between the second meridian radius of curvature value for the second latitude and the first meridian radius of curvature value for the first latitude by the difference between the latitude of the first point and the first latitude to obtain a second value; and adding the first meridian radius of curvature value for the first latitude to the second value to obtain the interpolated meridian radius of curvature value. 7. The method of claim 4 further comprising: calculating the difference between the value representing the cosine of the second latitude and the value representing the cosine of the first latitude; multiplying the difference between the value representing the cosine of the second latitude and the value representing the cosine of the first latitude by the difference between the latitude of the first point and the first latitude to obtain a third value; and adding the value representing the cosine of the first latitude to the third value to obtain the interpolated cosine value. 8. The method of claim 1 further comprising: calculating an east component of the distance between the first and second points based on the interpolated prime vertical radius of curvature value and the interpolated cosine value. 9. The method of claim 8 further comprising: calculating the difference between the longitude of the second point and the longitude of the first point; and multiplying the difference between longitude of the second point and the longitude of the first point by the interpolated cosine value and by the interpolated prime vertical radius of curvature value to obtain the east component of the distance between the first and second points. 10. The method of claim 9 further comprising: calculating a north component of the distance between the first and second points based on the interpolated meridian radius of curvature value. 11. The method of claim 10 further comprising: calculating the difference between the latitude of the second point and the latitude of the first point; and multiplying the difference between latitude of the second point and the latitude of the first point by the interpolated meridian radius of curvature value to obtain the north component of the distance between the first and second points. 12. The method of claim 11 further comprising; calculating the square of the east component of the distance between the first and second points; calculating the square of the north component of the distance between the first and second points; adding the square of the east component of the distance between the first and second points to the square of the north component of the distance between the first and second points to obtain a sum of the east and north components; calculating the square root of the sum of the east and north components to obtain the distance between the first and second points. 13. The method of claim 1 wherein the point between the first point and the second point is a midpoint between the first and second points. 14. The met hod of claim 1 wherein the first latitude and the second latitude and separated by an integer multiple of approximately one degree. 15. The method of claim 1 further comprising: providing a navigation system wherein the distance between the first point and the second point is calculated by the navigation system. 16. A computer readable medium including a program for calculating a distance between a first point and a second point using linear interpolation, the first point and the second point located between a first latitude and a second latitude, the program comprising: computer readable program code that accesses location information of the first point and the second point; computer readable program code that calculates an interpolated prime vertical radius of curvature value for a point between the first point and the second point based on a first prime vertical radius of curvature value for the first latitude and a second prime vertical radius of curvature value for the second latitude; computer readable program code that calculates an interpolated meridian radius of curvature value for the point between the first point and the second point based on a first meridian radius of curvature value for the first latitude and a second meridian radius of curvature value forte second latitude; computer readable program code that calculates an interpolated cosine value for the point between the first point and the second point based on a value representing a cosine of the first latitude and a value representing a cosine of the second latitude; and computer readable program code that calculates the distance between the first point and the second point based on the interpolated prime vertical radius of curvature value, the interpolated meridian radius of curvature value, and the interpolated cosine value. 17. The computer readable medium of claim 16 further comprising computer readable program code that: determines the first prime vertical radius of curvature value forte first latitude; determines the second prime vertical radius of curvature value for the second latitude; determines the first meridian radius of curvature value for the first latitude; determines the second meridian radius of curvature value for the second latitude; determines the value representing the cosine of the first latitude; and determines the value representing the cosine of the second latitude. 18. The computer readable medium of claim 17 further comprising computer readable program code that: stores the first prime vertical radius of curvature value forte first latitude; stores the second prime vertical radius of curvature value for the second latitude; stores the first meridian radius of curvature value for the first latitude; stores the second meridian radius of curvature value for the second latitude; stores the value representing the cosine of the first latitude; and stores the value representing the cosine of the second latitude. 19. The computer readable medium of claim 16 wherein the first point has an associated latitude and longitude and the second point has an associated latitude and longitude and further comprising computer readable program code that calculates the difference between the latitude of the first point and the first latitude. 20. The computer readable medium of claim 19 further comprising computer readable program code that: calculates the difference between the second prime vertical radius of curvature value for the second latitude and the first prime vertical radius of curvature value for the first latitude; multiplies the difference between the second prime vertical radius of curvature value for the second latitude and the first prime vertical radius of curvature value for the first latitude by the difference between the latitude of the first point and the first latitude to obtain a first value; and adds the first prime, vertical radius of curvature value for the first latitude to the first val