Abstract: A segmented 2D matrix symbol may be formed by dividing data into a plurality of segments, separately encoding the plurality of segments as corresponding arrays of cells, and arranging the arrays of cells in an abutting relationship. The segmented symbol may be reproduced, for example by receiving a bitmap corresponding to the formed symbol followed by printing; by copying a printed symbol; or by scanning a printed symbol and printing a copy. The reproduced symbol may be scanned, and data from only decoded segments, for example audio data, may be output.

Abstract: A segmented 2D matrix symbol may be formed by dividing data into a plurality of segments, separately encoding the plurality of segments as corresponding arrays of cells, and arranging the arrays of cells in an abutting relationship. The segmented symbol may be reproduced, for example by receiving a bitmap corresponding to the formed symbol followed by printing; by copying a printed symbol; or by scanning a printed symbol and printing a copy. The reproduced symbol may be scanned, and data from only decoded segments, for example audio data, may be output.

Abstract: A segmented 2D matrix symbol may be formed by dividing data into a plurality of segments, separately encoding the plurality of segments as corresponding arrays of cells, and arranging the arrays of cells in an abutting relationship. The segmented symbol may be reproduced, for example by receiving a bitmap corresponding to the formed symbol followed by printing; by copying a printed symbol; or by scanning a printed symbol and printing a copy. The reproduced symbol may be scanned, and data from only decoded segments, for example audio data, may be output.

Abstract: A segmented 2D matrix symbol may be formed by dividing data into a plurality of segments, separately encoding the plurality of segments as corresponding arrays of cells, and arranging the arrays of cells in an abutting relationship. The segmented symbol may be reproduced, for example by receiving a bitmap corresponding to the formed symbol followed by printing; by copying a printed symbol; or by scanning a printed symbol and printing a copy. The reproduced symbol may be scanned, and data from only decoded segments, for example audio data, may be output.

Abstract: A 2D matrix symbol may be formed by dividing data into a plurality of segments, separately encoding the plurality of segments as corresponding arrays of cells, and arranging the arrays of cells in an abutting relationship. A segmented 2D symbol may be read by capturing a plurality of images of a 2D matrix bar code symbol that is not subtended by any of the images and reconstructing at least some of the plurality of images to a portion of the 2D symbol or 2D symbol data larger than any of the images.

Abstract: A dual actuation foot switch particularly suited to medical laser systems is disclosed. The foot switch includes a housing having an opening for receiving a foot. A first switch is provided which is actuated by the placement of the foot into the housing. A second switch is actuated by pressure from the user's foot. The dual actuation feature can be used to initiate two different responses from the medical laser system.