Position-measuring device
AssigneeDr. Johannes Heidenhain GmbH
InventorMichael Schwabe
Life of this patent
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Abstract
A position measuring device that includes a scanning device and a measurement representation that is scanned by the scanning device. The measurement representation includes a code of a succession of code elements, which form at least a first codeword and a second codeword that define an absolute position, the first codeword and the second codeword are arranged interlaced with each other in that code elements associated with the second codeword are inserted into a succession of code elements associated with the first codeword. The code elements associated with the first codeword have inverse properties with respect to the code elements associated with the second code codeword.
Claims16
A position measuring device comprising:
- a scanning device;
- and
- a measurement representation that is scanned by said scanning device, wherein said measurement representation comprises:
- a code of a succession of code elements, which form at least a first codeword and a second codeword that define an absolute position, said first codeword and said second codeword are arranged interlaced with each other in that code elements associated with said second codeword are inserted into a succession of code elements associated with said first codeword;
- and
- said code elements associated with said first codeword have inverse properties with respect to said code elements associated with said second code codeword.
A position measuring device comprising:
- a scanning device;
- and
- a measurement representation that is scanned by said scanning device, wherein said measurement representation comprises:
- a code of a succession of code elements, which form at least a first codeword and a second codeword that define an absolute position, said first codeword and said second codeword are arranged interlaced with each other in that code elements associated with said second codeword are inserted into a succession of code elements associated with said first codeword;
- and
- said code elements associated with said first codeword have inverse properties with respect to said code elements associated with said second code codeword, wherein the number M of said code elements associated with said first codeword is greater than one and N code elements associated with said N number of codewords are inserted between respectively two code elements associated with said first codeword, wherein 0<N<M.
A position measuring device comprising:
- a scanning device;
- and
- a measurement representation that is scanned by said scanning device, wherein said measurement representation comprises:
- a code of a succession of code elements, which form at least a first codeword and a second codeword that define an absolute position, said first codeword and said second codeword are arranged interlaced with each other in that code elements associated with said second codeword are inserted into a succession of code elements associated with said first codeword;
- and
- said code elements associated with said first codeword have inverse properties with respect to said code elements associated with said second code codeword, wherein said code comprises two interlaced rows of codewords, wherein one of said two interlaced rows of codewords comprises a single-step code, which includes a first half of a numerical space corresponding to a bit length of a codeword associated with said one of said two interlaced Tows of codewords, and wherein said other of said two interlaced rows of codewords comprises inverted code elements of said one of said two interlaced rows of codewords and further comprises a second half of said numerical space corresponding to a bit length of a codeword associated with said other of said two interlaced rows of codewords.
Dependencies are inferred from the claim text.