Methods for cleaning lines on a game playing surface

• US 7,957,859 B2
• Filed: 06/05/2007
• Issued: 06/07/2011
• Est. Priority Date: 08/24/2001
• Status: Expired due to Fees

• Current Assignee: David Wright Young
• Original Assignee: David Wright Young
• Inventors: Young, David Wright
• Primary Examiner(s): Tran; Dalena
• Application Number:
  US11/810,418
• Publication Number:
  US 20070260371A1
• Time in Patent Office: 1,463 Days
• Field of Search: 701/25, 701/1, 701/23, 701/28, 318/580, 318/568.11, 318/568.12, 901/1, 15/3, 153/03, 153/19, 153/061, 153/09, 153/13, 153/20, 153/403, 15/211, 15/34, 15/48, 15/491, 15/531
• US Class Current: 701/25
• CPC Class Codes: G05D 1/0227 using mechanical sensing means, e.g. for sensing treated area
• CPC Class Codes: G05D 1/0242 using non-visible light signals, e.g. IR or UV signals
• CPC Class Codes: G05D 1/0255 using acoustic signals, e.g. ultra-sonic singals sonar systems designed for anti-collision purposes G01S15/93
• CPC Class Codes: G05D 1/0259 using magnetic or electromagnetic means
• CPC Class Codes: G05D 1/0272 comprising means for registering the travel distance, e.g. revolutions of wheels measuring distance traversed on the ground by vehicles, e.g. using odometers G01C22/00
• CPC Class Codes: G05D 1/028 using a RF signal

Abstract

A method for clearing lines on a playing surface is provided. The method includes automatic direction of a cleaning device along the lines to clean the lines. The method also preferably includes calibrating the means of measuring the distances moved by the cleaning device along the surface. Associated software is provided as well.

Claims

1. A method for cleaning boundary lines on a game playing surface, the method comprising:

directing a cleaning device to move along boundary lines on a game playing surface responsive to a set of programmed directions;

cleaning the boundary lines without cleaning substantial portions of the game playing surface when the cleaning device is moving along the boundary lines; and

calculating an effective diameter of at least one wheel on the cleaning device.

2. A method as defined in claim 1, wherein the step of calculating the effective diameter of at least one wheel further comprises measuring wheel rotation that occurs while traveling a known distance.

3. A method as defined in claim 2, wherein the step of measuring the wheel rotation that occurs while traveling a known distance further comprises the step of initalizing the measurement of wheel rotation when the beginning of a line is detected.

4. A method as defined in claim 3, wherein the step of measuring the wheel rotation that occurs while traveling a known distance further comprises the step of precisely following the line whose beginning was detected and measuring the amount of rotation of each wheel while following the line.

5. A method as defined in claim 4, wherein the step of measuring the wheel rotation that occurs while traveling a known distance further comprises the step of sensing the end of the line and stopping the measurement of wheel rotation that occurred from the beginning of the line to the end of the line.

6. A method as defined in claim 5, wherein the line that is followed while measuring the amount of wheel rotation is a tennis court boundary line.

7. A method as defined in claim 6 wherein the tennis court boundary line that is followed while measuring the wheel rotation is a base line or service line.

8. A method as defined in claim 1, further comprising using the calculated effective wheel diameters to dynamically update the amount of wheel rotation per unit distance traveled that is used in the calculation of dead reckoned distances traveled.

9. A computer program product residing on a computer usable medium for directing a cleaning device to clean at least one line on a surface, the computer program product comprising:

program code means for directing a cleaning device to move along at least one line of a surface;

program code means for cleaning the at least one line on the surface without cleaning substantial portions of the surface when the cleaning device is moving along the at least one line; and

a program code means for calculating an effective diameter of at least one wheel on the cleaning device.

10. A computer program product as defined in claim 9, wherein the program code means for calculating the effective diameters of wheels on the cleaning device includes program code means for measuring wheel rotation that occurs while traveling a known distance.

11. A computer program product as defined in claim 10, wherein the program code means for calculating the effective diameters of wheels on the cleaning device further includes program code means for initalizing the measurement of wheel rotation when the beginning of a line is detected.

12. A computer program product as defined in claim 11, wherein the program code means for calculating the effective diameters of wheels on the cleaning device further includes program code means for directing the cleaning device to precisely follow the line whose beginning was detected and to measure the amount of rotation of each wheel while following the line.

13. A computer program product as defined in claim 12, wherein the program code means for calculating the effective diameters of wheels on the cleaning device further includes program code means for sensing the end of the line and stopping the measurement of wheel rotation that occurs from the beginning of the line to the end of the line.

14. A computer program product as defined in claim 13, wherein the line that is followed while measuring the amount of wheel rotation is a tennis court boundary line.

15. A computer program product as defined in claim 14, wherein the tennis court boundary line that is followed while measuring the wheel rotation is a base line or service line.

16. A computer program product as defined in claim 9, further comprising program code means for using the effective diameter of a cleaning device wheel to dynamically update the amount of wheel rotation per unit distance traveled that is used in the calculation of dead reckoned distances traveled.