1. A system, comprising: a device having an emissive portion configured to produce a patterned beam; a memory configured to store a compressed representation of a requested dose pattern to be formed on a surface by the patterned beam; and a dictionary decompressor configured to at least partially decompress the compressed representation, and comprising a first dictionary memory, and a second dictionary memory, wherein the requested dose pattern comprises two groups of repeating pattern features; and wherein the dictionary decompressor is configured such that: the first dictionary memory is configured to store pattern data corresponding to a first of the groups, and the second dictionary memory is configured to store pattern data corresponding to a second of the groups, wherein the repeating pattern features in the first group have one or more differing characteristics than the repeating pattern features in the second group.
1. A system, comprising: a device having an emissive portion configured to produce a patterned beam; a memory configured to store a compressed representation of a requested dose pattern to be formed on a surface by the patterned beam; and a dictionary decompressor configured to at least partially decompress the compressed representation, and comprising a first dictionary memory, and a second dictionary memory, wherein the requested dose pattern comprises two groups of repeating pattern features; and wherein the dictionary decompressor is configured such that: the first dictionary memory is configured to store pattern data corresponding to a first of the groups, and the second dictionary memory is configured to store pattern data corresponding to a second of the groups, wherein the repeating pattern features in the first group have one or more differing characteristics than the repeating pattern features in the second group. 3. The system of claim 1 , wherein the dictionary decompressor further comprises: a first dictionary decoder configured to at least partially decompress at least a part of the compressed representation by extracting, from the first dictionary memory, portions of pattern data corresponding to references to the first dictionary memory contained in the compressed representation; and a second dictionary decoder configured to at least partially decompress at least a part of the compressed representation by extracting, from the second dictionary memory, portions of pattern data corresponding to references to the second dictionary memory contained in the compressed representation.