Print medium with coded data in two formats, information in one format being indicative of information in the other format

1. A print medium for use with a printer, the print medium comprising:

a laminar substrate defining first and second opposite faces;

first coded data in a linear pattern disposed in a first data region on the laminar substrate, the first coded data encoding pilot information along a first section of the linear pattern and first information along a second section of the linear pattern, such that the first coded data can be read by a single, uni-directional scan using an optional reader, whereby the pilot information identifies a format in which the first information is encoded and the first section positioned relative to the second section such that the pilot information is read prior to the first information; and

second coded data in a two dimensional format disposed in a second data region on the laminar substrate, the second coded data encoding second information;

wherein the first information is indicative of the second information.

2. A print medium according to claim 1 , wherein the first information is the same as the second information.

3. A print medium according to claim 2 , wherein the first information is a document identifier.

4. A print medium according to claim 1 , wherein the linear pattern is a linear-encoded data track.

5. A print medium according to claim 1 , wherein either or both of the first and second coded data are printed on to the laminar substrate using infra red ink.

6. A print medium according to claim 1 , further including one or more additional regions, each of the one or more additional regions including further coded data in the first format.

7. A print medium according to claim 6 , wherein the coded data in each of the additional regions includes the first information.

8. A print medium according to claim 7 , wherein the coded data in each of the first region and the additional regions includes an orientation indicator that is unique to each of the respective first and additional regions.

9. A print medium according to claim 8 , wherein each orientation indicator includes sufficient bits' worth of data to uniquely identify the region within which the corresponding coded data is disposed.

10. A print medium according to claim 9 , wherein there are three of the additional regions, and wherein:

the first coded data and the coded data of one of the additional regions are disposed along opposite edges on a first of the faces; and

the coded data of the remaining two additional regions are disposed along the opposite edges on the second of the faces.

11. A print medium according to claim 10 , wherein the second coded data is disposed between the first coded data and the one of the additional regions on the first of the faces.

12. A print medium according to claim 11 , including further coded data in the second format, the further coded data being disposed between the additional regions on the second of the faces.

13. A print medium according to claim 1 , further including human-readable information pre-printed on at least one of the faces.

14. A print medium according to claim 13 , wherein the human-readable information includes at least one direction indicator.

15. A print medium according to claim 13 , wherein the human-readable information includes at least one icon indicative of a function.

16. A print medium according to claim 1 , wherein the first information includes an embedded clock signal.

17. A print medium according to claim 1 , farther including at least one clock track on at least one of the faces.