Handheld printing devices and systems adapted to receive radio signal information indicative of a position and methods for using the same

1. A method of using a radio signal to identify a location of a hand-held printing device on a print media, comprising:

receiving a first radio signal on a first antenna of the printing device, wherein the first radio signal comprises a varying frequency signal transmitted by a beacon;

receiving a second radio signal on a second antenna of the printing device, wherein the second radio signal comprises a varying frequency signal transmitted by the beacon;

determining a first zero-crossing frequency corresponding to the received first radio signal at a first time;

determining a second zero-crossing frequency corresponding to the received second radio signal at a first time;

receiving the first radio signal on the first antenna at a second time;

determining a first zero-crossing frequency corresponding to the received first radio signal at the second time;

receiving the second radio signal on the second antenna at a second time;

determining a second zero-crossing frequency corresponding to the received second radio signal at the second time; and

calculating a relative change in location of the printing device utilizing the determined first zero-crossing frequency and the second zero-crossing frequency at both the first and second times.

2. A hand-held printing system, comprising:

a base unit comprising a radio signal transmitter; and

a hand-held printing device, wherein the hand-held printing device comprises:

a printhead, at least two antennas configured to receive one or more radio signals from the base unit, and a controller wherein the controller is in communication with the antennas and the printhead and wherein the controller is adapted to:

determine a first zero-crossing frequency corresponding to a received first radio signal at a first time;

determine a second zero-crossing frequency corresponding to a received second radio signal at the first time;

determine a first zero-crossing frequency corresponding to the received first radio signal at a second time;

determine a second zero-crossing frequency corresponding to the received second radio signal at the second time; and

calculate a relative position of the hand-held printing device by comparing the determined first zero-crossing frequency and the second zero-crossing frequency at both the first and second times.

3. The hand-held printing system of claim 2 , further comprising a host device, wherein the host device is in communication with the hand-held printing device and the base unit.

4. The hand-held printing system of claim 3 , wherein the base unit is attached to the host device.

5. The hand-held printing system of claim 2 , wherein the base unit further comprises a docking station adapted for the hand-held printing device.

6. The hand-held printing system of claim 3 , wherein the host device comprises a mobile information device.

7. The hand-held printing system of claim 3 , wherein the host device comprises a personal computer.

8. The system of claim 2 , further comprising a second radio signal transmitter.

9. The system of claim 2 , wherein the base unit is configured to transmit a signal comprising a predetermined range of frequencies.

10. The system of claim 2 , wherein the controller is adapted to calculate a zero-crossing frequency utilizing corresponding to a current location of the hand-held printing device.