G - Physics – 06 – K
Patent
G - Physics
06
K
354/57, 354/230.
G06K 9/62 (2006.01) G06K 9/68 (2006.01)
Patent
CA 1204868
ADDRESS SEQUENCER FOR PATTERN PROCESSING SYSTEM ABSTRACT OF THE DISCLOSURE An address sequencer produces an address stream which includes a plurality of interleaved sequences of addresses. Each sequence is a function of input data which is received when an input pattern is sampled by that sequence, so that a repetitive address loop is generated which characterizes the pattern. The address sequencer includes a shift register with a programmable feedback circuit which provides a feedback bit to the first stage of the shift register based upon bits from selected stages of the shift register . During each operating cycle of the address sequencer a counter provides a sequence identification number which identifies a particular sequence. A stored address selected by the sequence identification number is provided as the present address for that sequence (and the output of the address sequencer). In addition, the shift register is loaded with a multibit word derived from that stored address. The shift register is then shifted a predetermined number of times, and the feedback bit is derived from stages of the shift register which are selected based upon the sequence identification number. The next address of the sequence is derived from the contents of the shift register after the shifting and is selected based upon a comparison of the input data (which was received in response to the present address) with a reference value. The next address is stored for use the next time the sequence identification number for that particular sequence occurs. A new cycle is then commenced by providing a new sequence identification number from the counter . The production of interleaved sequences of addresses in the addressed stream enhances resolution of the pattern processing system, and permits processing of an image which contains a grey scale.
446009
Paulson Larry G.
Werth Larry J.
Marks & Clerk
Pattern Processing Technologies Inc.
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