Distributed type labeling for embedded data blocks

Claim 2

A two dimensional embedded data block for storing machine readable information on a recording medium; said embedded data block comprising a lattice-like synchronization frame composed of embedded data characters for encoding a recognizable address code, said code being selected to provide a type label for said data block and for distinguishing said data block from different data block types.

Claim 3

The embedded data block of claim 1 wherein different data block types are identified by different pseudo-noise sequences of the type that are generated by a shift register having a fixed number of stages while using different tap connections.

Claim 4

The embedded data block of claim 1 wherein said embedded data block is composed of a self-clocking glyph code pattern.

Claim 5

The embedded data block of claim 3 wherein said glyph code pattern is composed of slash-like symbols, said symbols being written on said recording medium on substantially uniformly spaced centers.

Claim 6

The embedded data block of claim 4 wherein said glyph code pattern has a substantially uniform grayscale appearance when viewed under ordinary, unaided viewing conditions.

Claim 7

A process for type labeling different two dimensional embedded data patterns, each of said embedded data patterns having a lattice-like sync frame composed of spatially distributed embedded data characters; said process comprising the steps of correlating each embedded data pattern type with a unique identification code that distinguishes it from all other embedded data pattern types, and; encoding the identification code that is type correlated with a given embedded data pattern in the sync frame of said given data pattern, thereby applying a distributed type label to the given data pattern.

Claim 8

A process for type labeling different two dimensional embedded data patterns, each of said embedded data patterns having a lattice-like sync frame composed of spatially distributed embedded data characters; said process comprising the steps of correlating each embedded data pattern type with a unique identification code that distinguishes it from all other embedded data pattern types, and; encoding the identification code that is type correlated with a given embedded data pattern in the sync frame of said given data pattern, thereby applying a distributed type label to the given data pattern.

Claim 9

The embedded data pattern of claim 6 wherein said embedded data pattern is a self-clocking glyph code pattern.

Claim 10

The embedded data pattern of claim 7 wherein the embedded data characters are slash-like symbols, said symbols being written on said recording medium on substantially uniformly spaced centers.

Claim 11

The embedded data block of claim 8 wherein said glyph code pattern has a substantially uniform grayscale appearance when viewed under ordinary, unaided viewing conditions.